{"pageNumber":"2491","pageRowStart":"62250","pageSize":"25","recordCount":184689,"records":[{"id":70028959,"text":"70028959 - 2006 - Mercury in water and biomass of microbial communities in hot springs of Yellowstone National Park, USA","interactions":[],"lastModifiedDate":"2018-10-29T09:28:55","indexId":"70028959","displayToPublicDate":"2006-01-01T00:00:00","publicationYear":"2006","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":835,"text":"Applied Geochemistry","active":true,"publicationSubtype":{"id":10}},"title":"Mercury in water and biomass of microbial communities in hot springs of Yellowstone National Park, USA","docAbstract":"<p>Ultra-clean sampling methods and approaches typically used in pristine environments were applied to quantify concentrations of Hg species in water and microbial biomass from hot springs of Yellowstone National Park, features that are geologically enriched with Hg. Microbial populations of chemically-diverse hot springs were also characterized using modern methods in molecular biology as the initial step toward ongoing work linking Hg speciation with microbial processes. Molecular methods (amplification of environmental DNA using 16S rDNA primers, cloning, denatured gradient gel electrophoresis (DGGE) screening of clone libraries, and sequencing of representative clones) were used to examine the dominant members of microbial communities in hot springs. Total Hg (THg), monomethylated Hg (MeHg), pH, temperature, and other parameters influential to Hg speciation and microbial ecology are reported for hot springs water and associated microbial mats.</p>","language":"English","publisher":"Elsevier","doi":"10.1016/j.apgeochem.2006.08.004","issn":"08832927","usgsCitation":"King, S., Behnke, S., Slack, K., Krabbenhoft, D., Nordstrom, D.K., Burr, M., and Striegl, R.G., 2006, Mercury in water and biomass of microbial communities in hot springs of Yellowstone National Park, USA: Applied Geochemistry, v. 21, no. 11, p. 1868-1879, https://doi.org/10.1016/j.apgeochem.2006.08.004.","productDescription":"12 p.","startPage":"1868","endPage":"1879","costCenters":[{"id":589,"text":"Toxic Substances Hydrology Program","active":true,"usgs":true}],"links":[{"id":236523,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"},{"id":209804,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1016/j.apgeochem.2006.08.004"}],"volume":"21","issue":"11","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505a541fe4b0c8380cd6ceb0","contributors":{"authors":[{"text":"King, S.A.","contributorId":74562,"corporation":false,"usgs":true,"family":"King","given":"S.A.","email":"","affiliations":[],"preferred":false,"id":420724,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Behnke, S.","contributorId":62394,"corporation":false,"usgs":true,"family":"Behnke","given":"S.","email":"","affiliations":[],"preferred":false,"id":420722,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Slack, K.","contributorId":94484,"corporation":false,"usgs":true,"family":"Slack","given":"K.","affiliations":[],"preferred":false,"id":420727,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Krabbenhoft, D. P. 0000-0003-1964-5020","orcid":"https://orcid.org/0000-0003-1964-5020","contributorId":90765,"corporation":false,"usgs":true,"family":"Krabbenhoft","given":"D. P.","affiliations":[],"preferred":false,"id":420726,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Nordstrom, D. Kirk 0000-0003-3283-5136 dkn@usgs.gov","orcid":"https://orcid.org/0000-0003-3283-5136","contributorId":749,"corporation":false,"usgs":true,"family":"Nordstrom","given":"D.","email":"dkn@usgs.gov","middleInitial":"Kirk","affiliations":[{"id":37277,"text":"WMA - Earth System Processes Division","active":true,"usgs":true},{"id":5044,"text":"National Research Program - Central Branch","active":true,"usgs":true}],"preferred":false,"id":420725,"contributorType":{"id":1,"text":"Authors"},"rank":5},{"text":"Burr, M.D.","contributorId":58450,"corporation":false,"usgs":true,"family":"Burr","given":"M.D.","email":"","affiliations":[],"preferred":false,"id":420721,"contributorType":{"id":1,"text":"Authors"},"rank":6},{"text":"Striegl, Robert G. 0000-0002-8251-4659 rstriegl@usgs.gov","orcid":"https://orcid.org/0000-0002-8251-4659","contributorId":1630,"corporation":false,"usgs":true,"family":"Striegl","given":"Robert","email":"rstriegl@usgs.gov","middleInitial":"G.","affiliations":[{"id":36183,"text":"Hydro-Ecological Interactions Branch","active":true,"usgs":true},{"id":37277,"text":"WMA - Earth System Processes Division","active":true,"usgs":true},{"id":5044,"text":"National Research Program - Central Branch","active":true,"usgs":true},{"id":200,"text":"Coop Res Unit Seattle","active":true,"usgs":true}],"preferred":false,"id":420723,"contributorType":{"id":1,"text":"Authors"},"rank":7}]}}
,{"id":70028960,"text":"70028960 - 2006 - Phylogeography and spatial genetic structure of the Southern torrent salamander: Implications for conservation and management","interactions":[],"lastModifiedDate":"2017-11-15T14:29:11","indexId":"70028960","displayToPublicDate":"2006-01-01T00:00:00","publicationYear":"2006","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2333,"text":"Journal of Heredity","active":true,"publicationSubtype":{"id":10}},"title":"Phylogeography and spatial genetic structure of the Southern torrent salamander: Implications for conservation and management","docAbstract":"The Southern torrent salamander (Rhyacotriton variegatus) was recently found not warranted for listing under the US Endangered Species Act due to lack of information regarding population fragmentation and gene flow. Found in small-order streams associated with late-successional coniferous forests of the US Pacific Northwest, threats to their persistence include disturbance related to timber harvest activities. We conducted a study of genetic diversity throughout this species' range to 1) identify major phylogenetic lineages and phylogeographic barriers and 2) elucidate regional patterns of population genetic and spatial phylogeographic structure. Cytochrome b sequence variation was examined for 189 individuals from 72 localities. We identified 3 major lineages corresponding to nonoverlapping geographic regions: a northern California clade, a central Oregon clade, and a northern Oregon clade. The Yaquina River may be a phylogeographic barrier between the northern Oregon and central Oregon clades, whereas the Smith River in northern California appears to correspond to the discontinuity between the central Oregon and northern California clades. Spatial analyses of genetic variation within regions encompassing major clades indicated that the extent of genetic structure is comparable among regions. We discuss our results in the context of conservation efforts for Southern torrent salamanders. ?? The American Genetic Association. 2006. All rights reserved.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Journal of Heredity","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","doi":"10.1093/jhered/esl038","issn":"00221503","usgsCitation":"Miller, M., Haig, S.M., and Wagner, R., 2006, Phylogeography and spatial genetic structure of the Southern torrent salamander: Implications for conservation and management: Journal of Heredity, v. 97, no. 6, p. 561-570, https://doi.org/10.1093/jhered/esl038.","startPage":"561","endPage":"570","numberOfPages":"10","costCenters":[{"id":290,"text":"Forest and Rangeland Ecosystem Science Center","active":false,"usgs":true}],"links":[{"id":477478,"rank":10000,"type":{"id":40,"text":"Open Access Publisher Index Page"},"url":"https://doi.org/10.1093/jhered/esl038","text":"Publisher Index Page"},{"id":236492,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"},{"id":209782,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1093/jhered/esl038"}],"volume":"97","issue":"6","noUsgsAuthors":false,"publicationDate":"2006-11-29","publicationStatus":"PW","scienceBaseUri":"505a7a5ce4b0c8380cd78e89","contributors":{"authors":[{"text":"Miller, M.P.","contributorId":47142,"corporation":false,"usgs":true,"family":"Miller","given":"M.P.","email":"","affiliations":[],"preferred":false,"id":420728,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Haig, S. M. 0000-0002-6616-7589","orcid":"https://orcid.org/0000-0002-6616-7589","contributorId":55389,"corporation":false,"usgs":true,"family":"Haig","given":"S.","email":"","middleInitial":"M.","affiliations":[],"preferred":false,"id":420729,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Wagner, R.S.","contributorId":57427,"corporation":false,"usgs":true,"family":"Wagner","given":"R.S.","email":"","affiliations":[],"preferred":false,"id":420730,"contributorType":{"id":1,"text":"Authors"},"rank":3}]}}
,{"id":70028961,"text":"70028961 - 2006 - Eco-informatics and natural resource management","interactions":[],"lastModifiedDate":"2018-08-13T10:11:44","indexId":"70028961","displayToPublicDate":"2006-01-01T00:00:00","publicationYear":"2006","noYear":false,"publicationType":{"id":24,"text":"Conference Paper"},"publicationSubtype":{"id":19,"text":"Conference Paper"},"title":"Eco-informatics and natural resource management","docAbstract":"This project highlight reports on the 2004 workshop [1], as well as follow-up activities in 2005 and 2006, regarding how informatics tools can help manage natural resources and decide policy. The workshop was sponsored jointly by sponsored by the NSF, NBII, NASA, and EPA, and attended by practitioners from government and non-government agencies, and university researchers from the computer, social, and ecological sciences. The workshop presented the significant information technology (IT) problems that resource managers face when integrating ecological or environmental information to make decisions. These IT problems fall into five categories: data presentation, data gaps, tools, indicators, and policy making and implementation. To alleviate such problems, we recommend informatics research in four IT areas, as defined in this abstract and our final report: modeling and simulation, data quality, information integration and ontologies, and social and human aspects. Additionally, we recommend that funding agencies provide infrastructure and some changes in funding habits to assure cycles of innovation in the domain were addressed. Follow-on activities to the workshop subsequent to dg.o 2005 included: an invited talk presenting workshop results at DILS 2005, publication of the workshop final report by the NBII [1], and a poster at the NBII All Hands Meeting (Oct. 2005). We also expect a special issue of the JIIS to appear in 2006 that addresses some of these questions. As we go to press, no solicitation by funding agencies has as yet been published, but various NASA and NBII, and NSF cyber-infrastructure and DG research efforts now underway address the above issues.","largerWorkTitle":"ACM International Conference Proceeding Series","conferenceTitle":"7th Annual International Conference on Digital Government Research, Dg.o 2006","conferenceDate":"21 May 2006 through 24 May 2006","conferenceLocation":"San Diego, CA","language":"English","doi":"10.1145/1146598.1146712","usgsCitation":"Cushing, J., Wilson, T., Borning, A., Delcambre, L., Bowker, G., Frame, M., Schnase, J., Sonntag, W., Fulop, J., Hert, C., Hovy, E., Jones, J., Landis, E., Schweik, C., Brandt, L., Gregg, V., and Spengler, S., 2006, Eco-informatics and natural resource management, <i>in</i> ACM International Conference Proceeding Series, v. 151, San Diego, CA, 21 May 2006 through 24 May 2006, p. 381-382, https://doi.org/10.1145/1146598.1146712.","productDescription":"2 p.","startPage":"381","endPage":"382","costCenters":[{"id":37226,"text":"Core Science Analytics, Synthesis, and Libraries","active":true,"usgs":true}],"links":[{"id":236493,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"},{"id":209783,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1145/1146598.1146712"}],"volume":"151","noUsgsAuthors":false,"publicationDate":"2006-05-21","publicationStatus":"PW","scienceBaseUri":"505a053ae4b0c8380cd50cf4","contributors":{"authors":[{"text":"Cushing, J.B.","contributorId":52382,"corporation":false,"usgs":true,"family":"Cushing","given":"J.B.","email":"","affiliations":[],"preferred":false,"id":420739,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Wilson, T.","contributorId":49581,"corporation":false,"usgs":true,"family":"Wilson","given":"T.","affiliations":[],"preferred":false,"id":420737,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Borning, A.","contributorId":88545,"corporation":false,"usgs":true,"family":"Borning","given":"A.","email":"","affiliations":[],"preferred":false,"id":420742,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Delcambre, L.","contributorId":42011,"corporation":false,"usgs":true,"family":"Delcambre","given":"L.","email":"","affiliations":[],"preferred":false,"id":420736,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Bowker, G.","contributorId":107482,"corporation":false,"usgs":true,"family":"Bowker","given":"G.","email":"","affiliations":[],"preferred":false,"id":420747,"contributorType":{"id":1,"text":"Authors"},"rank":5},{"text":"Frame, Mike 0000-0001-9995-2172 mike_frame@usgs.gov","orcid":"https://orcid.org/0000-0001-9995-2172","contributorId":4541,"corporation":false,"usgs":true,"family":"Frame","given":"Mike","email":"mike_frame@usgs.gov","affiliations":[{"id":208,"text":"Core Science Analytics and Synthesis","active":true,"usgs":true}],"preferred":true,"id":420738,"contributorType":{"id":1,"text":"Authors"},"rank":6},{"text":"Schnase, J.","contributorId":36736,"corporation":false,"usgs":true,"family":"Schnase","given":"J.","affiliations":[],"preferred":false,"id":420735,"contributorType":{"id":1,"text":"Authors"},"rank":7},{"text":"Sonntag, W.","contributorId":65272,"corporation":false,"usgs":true,"family":"Sonntag","given":"W.","affiliations":[],"preferred":false,"id":420741,"contributorType":{"id":1,"text":"Authors"},"rank":8},{"text":"Fulop, J.","contributorId":9836,"corporation":false,"usgs":true,"family":"Fulop","given":"J.","email":"","affiliations":[],"preferred":false,"id":420731,"contributorType":{"id":1,"text":"Authors"},"rank":9},{"text":"Hert, C.","contributorId":59227,"corporation":false,"usgs":true,"family":"Hert","given":"C.","email":"","affiliations":[],"preferred":false,"id":420740,"contributorType":{"id":1,"text":"Authors"},"rank":10},{"text":"Hovy, E.","contributorId":104269,"corporation":false,"usgs":true,"family":"Hovy","given":"E.","email":"","affiliations":[],"preferred":false,"id":420746,"contributorType":{"id":1,"text":"Authors"},"rank":11},{"text":"Jones, J.","contributorId":102256,"corporation":false,"usgs":true,"family":"Jones","given":"J.","affiliations":[],"preferred":false,"id":420745,"contributorType":{"id":1,"text":"Authors"},"rank":12},{"text":"Landis, E.","contributorId":92846,"corporation":false,"usgs":true,"family":"Landis","given":"E.","email":"","affiliations":[],"preferred":false,"id":420743,"contributorType":{"id":1,"text":"Authors"},"rank":13},{"text":"Schweik, C.","contributorId":26126,"corporation":false,"usgs":true,"family":"Schweik","given":"C.","email":"","affiliations":[],"preferred":false,"id":420733,"contributorType":{"id":1,"text":"Authors"},"rank":14},{"text":"Brandt, L.","contributorId":24548,"corporation":false,"usgs":true,"family":"Brandt","given":"L.","email":"","affiliations":[],"preferred":false,"id":420732,"contributorType":{"id":1,"text":"Authors"},"rank":15},{"text":"Gregg, V.","contributorId":28421,"corporation":false,"usgs":true,"family":"Gregg","given":"V.","email":"","affiliations":[],"preferred":false,"id":420734,"contributorType":{"id":1,"text":"Authors"},"rank":16},{"text":"Spengler, S.","contributorId":93259,"corporation":false,"usgs":true,"family":"Spengler","given":"S.","email":"","affiliations":[],"preferred":false,"id":420744,"contributorType":{"id":1,"text":"Authors"},"rank":17}]}}
,{"id":70028952,"text":"70028952 - 2006 - Vicarious calibration of GOES imager visible channel using the moon","interactions":[],"lastModifiedDate":"2012-03-12T17:20:58","indexId":"70028952","displayToPublicDate":"2006-01-01T00:00:00","publicationYear":"2006","noYear":false,"publicationType":{"id":24,"text":"Conference Paper"},"publicationSubtype":{"id":19,"text":"Conference Paper"},"title":"Vicarious calibration of GOES imager visible channel using the moon","docAbstract":"In this paper, we study the feasibility of a method for vicarious calibration of the GOES Imager visible channel using the Moon. The measured Moon irradiance from 26 undipped moon imagers exhausted all the potential Moon appearances between July 1998 and December 2005, together with the seven scheduled Moon observation data obtained after November 2005, were compared with the USGS lunar model results to estimate the degradation rate of the GOES-10 Imager visible channel. A total of nine methods of determining the space count and identifying lunar pixels were employed in this study to measure the GOES-10 Moon irradiance. Our results show that the selected mean and the masking Moon appears the best method. Eight of the nine resulting degradation rates range from 4.5%/year to 5.0%/year during the nearly nine years of data, which are consistent with most other degradation rates obtained for GOES-10 based on different references. In particular, the degradation rate from the Moon-based calibration (4.5%/year) agrees very well with the MODIS-based calibration (4.4%/year) over the same period, confirming the capability of relative and absolute calibration based on the Moon. Finally, our estimate of lunar calibration precision as applied to GOES-10 is 3.5%.","largerWorkTitle":"Proceedings of SPIE - The International Society for Optical Engineering","conferenceTitle":"Earth Observing Systems XI","conferenceDate":"14 August 2006 through 16 August 2006","conferenceLocation":"San Diego, CA","language":"English","doi":"10.1117/12.681591","issn":"0277786X","isbn":"0819463752; 9780819463753","usgsCitation":"Wu, X., Stone, T., Yu, F., and Han, D., 2006, Vicarious calibration of GOES imager visible channel using the moon, <i>in</i> Proceedings of SPIE - The International Society for Optical Engineering, v. 6296, San Diego, CA, 14 August 2006 through 16 August 2006, https://doi.org/10.1117/12.681591.","costCenters":[],"links":[{"id":209727,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1117/12.681591"},{"id":236422,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"6296","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505bc259e4b08c986b32aab1","contributors":{"authors":[{"text":"Wu, X.","contributorId":31925,"corporation":false,"usgs":true,"family":"Wu","given":"X.","email":"","affiliations":[],"preferred":false,"id":420694,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Stone, T.C.","contributorId":74874,"corporation":false,"usgs":true,"family":"Stone","given":"T.C.","email":"","affiliations":[],"preferred":false,"id":420696,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Yu, F.","contributorId":37938,"corporation":false,"usgs":true,"family":"Yu","given":"F.","email":"","affiliations":[],"preferred":false,"id":420695,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Han, D.","contributorId":23740,"corporation":false,"usgs":true,"family":"Han","given":"D.","email":"","affiliations":[],"preferred":false,"id":420693,"contributorType":{"id":1,"text":"Authors"},"rank":4}]}}
,{"id":70028963,"text":"70028963 - 2006 - Surface slip associated with the 2004 Parkfield, California, earthquake measured on alinement arrays","interactions":[],"lastModifiedDate":"2012-03-12T17:20:57","indexId":"70028963","displayToPublicDate":"2006-01-01T00:00:00","publicationYear":"2006","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1135,"text":"Bulletin of the Seismological Society of America","onlineIssn":"1943-3573","printIssn":"0037-1106","active":true,"publicationSubtype":{"id":10}},"title":"Surface slip associated with the 2004 Parkfield, California, earthquake measured on alinement arrays","docAbstract":"Although still continuing, surface slip from the 2004 Parkfield earth-quake as measured on alinement arrays appears to be approaching about 30-35 cm between Parkfield and Gold Hill. This includes slip along the main trace and the Southwest Fracture Zone (SWFZ). Slip here was higher in 1966 at about 40 cm. The distribution of 2004 slip appears to have a shape similar to that of the 1966 event, but final slip is expected to be lower in 2004 by about 3-15 cm, even when continuing slip is accounted for. Proportionately, this difference is most notable at the south end at Highway 46, where the 1966 event slip was 13 cm compared to the 2004 slip of 4 cm. Continuous Global Positioning System and creepmeters suggest that significant surface coseismic slip apparently occurred mainly on the SWFZ and perhaps on Middle Mountain (the latter possibly caused by shaking) (Langbein et al., 2005). Creepmeters indicate only minor (<0.2 cm) surface coseismic slip occurred on the main trace between Parkfield and Gold Hill. We infer that 3-6 cm slip accumulated across our arrays in the first 24 hr. At Highway 46, slip appears complete, whereas the remaining sites are expected to take 2-6 years to reach their background creep rates. Following the 1966 event, afterslip at one site persisted as much as 5-10 years. The much longer recurrence intervals between the past two Parkfield earthquakes and the decreasing slip per event may suggest that larger slip deficits are now growing along the Parkfield segment.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Bulletin of the Seismological Society of America","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","doi":"10.1785/0120050806","issn":"00371106","usgsCitation":"Lienkaemper, J.J., Baker, B., and McFarland, F., 2006, Surface slip associated with the 2004 Parkfield, California, earthquake measured on alinement arrays: Bulletin of the Seismological Society of America, v. 96, no. 4 B, https://doi.org/10.1785/0120050806.","costCenters":[],"links":[{"id":209805,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1785/0120050806"},{"id":236524,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"96","issue":"4 B","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505b9fc0e4b08c986b31e7eb","contributors":{"authors":[{"text":"Lienkaemper, J. J.","contributorId":71947,"corporation":false,"usgs":true,"family":"Lienkaemper","given":"J.","email":"","middleInitial":"J.","affiliations":[],"preferred":false,"id":420758,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Baker, B.","contributorId":63595,"corporation":false,"usgs":true,"family":"Baker","given":"B.","affiliations":[],"preferred":false,"id":420757,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"McFarland, F.S.","contributorId":25741,"corporation":false,"usgs":true,"family":"McFarland","given":"F.S.","email":"","affiliations":[],"preferred":false,"id":420756,"contributorType":{"id":1,"text":"Authors"},"rank":3}]}}
,{"id":70028965,"text":"70028965 - 2006 - Holocene environmental and parasequence development of the St. Jones Estuary, Delaware (USA): Foraminiferal proxies of natural climatic and anthropogenic change","interactions":[],"lastModifiedDate":"2012-03-12T17:20:57","indexId":"70028965","displayToPublicDate":"2006-01-01T00:00:00","publicationYear":"2006","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2996,"text":"Palaeogeography, Palaeoclimatology, Palaeoecology","printIssn":"0031-0182","active":true,"publicationSubtype":{"id":10}},"title":"Holocene environmental and parasequence development of the St. Jones Estuary, Delaware (USA): Foraminiferal proxies of natural climatic and anthropogenic change","docAbstract":"The benthic foraminiferal record of marshes located along western Delaware Bay (St. Jones Estuary, USA) reflects the response of estuaries to sea-level and paleoclimate change during the Holocene. System tracts are recognized and within them parasequences based on sedimentological and foraminiferal assemblages identification. The parasequences defined by foraminiferal assemblages appear correlative with rapid Holocene climate changes that are of worldwide significance: 6000-5000, 4200-3800, 3500-2500, 1200-1000, and 600??cal years BP. Following postglacial sea-level rise, modern subestuaries and marshes in the region began to develop between 6000 and 4000??years BP, depending on their proximity to the mouth of Delaware Bay and coastal geomorphology. Initial sediments were fluvial in origin, with freshwater marshes established around 4000??years BP. The subsequent sea-level transgression occurred sufficiently slowly that freshwater marshes alternated with salt marshes at the same sites to around 3000??years BP. Locally another two transgressions are identified at 1800 and 1000??years BP respectively. Marine influence increased in the estuaries until 600??years BP (Little Ice Age), when regression occurred. Sea-level began to rise again during the mid-19th Century at the end of the Little Ice Age, when marshes became established. The presence of a sand lens in the upper and middle estuary and the reduction in the number of tests in the top samples in cores from the same area also suggest an anthropogenic influence. The estuary infill resulted in a sharp transgressive sequence, represented by salt marsh foraminiferal assemblages in the upper part of the cores. The increase in marsh foraminifera in both areas suggests an increase in marine influence that might be due to the transgression beginning at the end of the Little Ice Age about 150-180??years ago coupled with anthropogenic straightening of the channel in 1913. ?? 2006 Elsevier B.V. All rights reserved.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Palaeogeography, Palaeoclimatology, Palaeoecology","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","doi":"10.1016/j.palaeo.2006.04.011","issn":"00310182","usgsCitation":"Leorri, E., Martin, R., and McLaughlin, P., 2006, Holocene environmental and parasequence development of the St. Jones Estuary, Delaware (USA): Foraminiferal proxies of natural climatic and anthropogenic change: Palaeogeography, Palaeoclimatology, Palaeoecology, v. 241, no. 3-4, p. 590-607, https://doi.org/10.1016/j.palaeo.2006.04.011.","startPage":"590","endPage":"607","numberOfPages":"18","costCenters":[],"links":[{"id":209830,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1016/j.palaeo.2006.04.011"},{"id":236558,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"241","issue":"3-4","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505a31dfe4b0c8380cd5e2e2","contributors":{"authors":[{"text":"Leorri, E.","contributorId":46283,"corporation":false,"usgs":true,"family":"Leorri","given":"E.","affiliations":[],"preferred":false,"id":420763,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Martin, R.","contributorId":59223,"corporation":false,"usgs":true,"family":"Martin","given":"R.","affiliations":[],"preferred":false,"id":420764,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"McLaughlin, P.","contributorId":20133,"corporation":false,"usgs":true,"family":"McLaughlin","given":"P.","email":"","affiliations":[],"preferred":false,"id":420762,"contributorType":{"id":1,"text":"Authors"},"rank":3}]}}
,{"id":70028966,"text":"70028966 - 2006 - New geographic records of Hamlets, Hypoplectrus spp. (Serranidae), in the Caribbean Sea","interactions":[],"lastModifiedDate":"2020-09-10T16:19:22.314637","indexId":"70028966","displayToPublicDate":"2006-01-01T00:00:00","publicationYear":"2006","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":3290,"text":"Revista de Biología Tropical: International Journal of Tropical Biology and Conservation","onlineIssn":"2215-2075","printIssn":"0034-7744","active":true,"publicationSubtype":{"id":10}},"displayTitle":"New geographic records of Hamlets, <i>Hypoplectrus</i> spp. (Serranidae), in the Caribbean Sea","title":"New geographic records of Hamlets, Hypoplectrus spp. (Serranidae), in the Caribbean Sea","docAbstract":"<p><span>The exact number of species of hamlets,&nbsp;</span><i>Hypoplectrus</i><span><span>&nbsp;</span>spp., in the Caribbean is controversial and the geographic distributions of these species/forms are poorly documented. We report Curaçao, Netherlands Antilles, as a new locality for the Barred Hamlet,<span>&nbsp;</span></span><i>H. puella</i><span><span>&nbsp;</span>(Cuvier), and Shy Hamlet,<span>&nbsp;</span></span><i>H. guttavarius</i><span><span>&nbsp;</span>(Poey); and St. John and St. Thomas, U.S. Virgin Islands, for the Tan Hamlet,<span>&nbsp;</span></span><i>Hypoplectrus</i><span><span>&nbsp;</span>sp. The Black Hamlet,<span>&nbsp;</span></span><i>H. nigricans</i><span><span>&nbsp;</span>(Poey), has previously been reported from Curaçao, but we did not see it there.</span></p>","language":"English","publisher":"Universidad de Costa Rica","publisherLocation":"San José, Costa Rica","usgsCitation":"Williams, E.H., Bunkley-Williams, L., Rogers, C.S., and Fenner, R., 2006, New geographic records of Hamlets, Hypoplectrus spp. (Serranidae), in the Caribbean Sea: Revista de Biología Tropical: International Journal of Tropical Biology and Conservation, v. 54, no. Supplement 3, p. 171-173.","productDescription":"3 p.","startPage":"171","endPage":"173","costCenters":[],"links":[{"id":236559,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"},{"id":352919,"rank":2,"type":{"id":15,"text":"Index Page"},"url":"https://revistas.ucr.ac.cr/index.php/rbt/article/view/26911"}],"country":"Curacao","geographicExtents":"{\n  \"type\": \"FeatureCollection\",\n  \"features\": [\n    {\n      \"type\": \"Feature\",\n      \"properties\": {},\n      \"geometry\": {\n        \"type\": \"Polygon\",\n        \"coordinates\": [\n          [\n            [\n              -69.2083740234375,\n              11.990965150182246\n            ],\n            [\n              -68.7139892578125,\n              11.990965150182246\n            ],\n            [\n              -68.7139892578125,\n              12.409753820104937\n            ],\n            [\n              -69.2083740234375,\n              12.409753820104937\n            ],\n            [\n              -69.2083740234375,\n              11.990965150182246\n            ]\n          ]\n        ]\n      }\n    }\n  ]\n}","volume":"54","issue":"Supplement 3","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505a6588e4b0c8380cd72c02","contributors":{"authors":[{"text":"Williams, Ernest H. Jr.","contributorId":124593,"corporation":false,"usgs":false,"family":"Williams","given":"Ernest","suffix":"Jr.","email":"","middleInitial":"H.","affiliations":[],"preferred":false,"id":420765,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Bunkley-Williams, Lucy","contributorId":103628,"corporation":false,"usgs":false,"family":"Bunkley-Williams","given":"Lucy","email":"","affiliations":[],"preferred":false,"id":420768,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Rogers, Caroline S. 0000-0001-9056-6961 caroline_rogers@usgs.gov","orcid":"https://orcid.org/0000-0001-9056-6961","contributorId":3126,"corporation":false,"usgs":true,"family":"Rogers","given":"Caroline","email":"caroline_rogers@usgs.gov","middleInitial":"S.","affiliations":[{"id":566,"text":"Southeast Ecological Science Center","active":true,"usgs":true},{"id":17705,"text":"Wetland and Aquatic Research Center","active":true,"usgs":true}],"preferred":true,"id":420766,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Fenner, Robert","contributorId":124589,"corporation":false,"usgs":false,"family":"Fenner","given":"Robert","email":"","affiliations":[],"preferred":false,"id":420767,"contributorType":{"id":1,"text":"Authors"},"rank":4}]}}
,{"id":70028969,"text":"70028969 - 2006 - Large-scale movements and habitat characteristics of king eiders throughout the nonbreeding period","interactions":[],"lastModifiedDate":"2012-03-12T17:20:58","indexId":"70028969","displayToPublicDate":"2006-01-01T00:00:00","publicationYear":"2006","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1318,"text":"Condor","active":true,"publicationSubtype":{"id":10}},"title":"Large-scale movements and habitat characteristics of king eiders throughout the nonbreeding period","docAbstract":"King Eiders (Somateria spectabilis) breeding in western Canada and Alaska molt wing feathers and spend the winter in remote areas of the Bering Sea, precluding direct observation. To characterize timing of migration and habitat used by King Eiders during the nonbreeding period, we collected location data for 60 individuals (27 females and 33 males) over three years from satellite telemetry and utilized oceanographic information obtained by remote sensing. Male King Eiders dispersed from breeding areas, arrived at wing molt sites, and dispersed from wing molt sites earlier than females in all years. Males arriving earlier at wing molt sites molted flight feathers at higher latitudes. Distributions of molt and winter locations did not differ by sex or among years. Of the variables considered for analysis, distance to shore, water depth, and salinity appeared to best describe King Eider habitat throughout the nonbreeding period. King Eiders were located closer to shore, in shallower water with lower salinity than random locations. During the winter, lower ice concentrations were also associated with King Eider locations. This study provides some of the first large-scale descriptions of King Eider migration and habitat outside the breeding season. ?? The Cooper Ornithological Society 2006.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Condor","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","doi":"10.1650/0010-5422(2006)108[887:LMAHCO]2.0.CO;2","issn":"00105422","usgsCitation":"Phillips, L.M., Powell, A., and Rexstad, E., 2006, Large-scale movements and habitat characteristics of king eiders throughout the nonbreeding period: Condor, v. 108, no. 4, p. 887-900, https://doi.org/10.1650/0010-5422(2006)108[887:LMAHCO]2.0.CO;2.","startPage":"887","endPage":"900","numberOfPages":"14","costCenters":[],"links":[{"id":209807,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1650/0010-5422(2006)108[887:LMAHCO]2.0.CO;2"},{"id":236528,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"108","issue":"4","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505a449ce4b0c8380cd66c52","contributors":{"authors":[{"text":"Phillips, Laura M.","contributorId":49497,"corporation":false,"usgs":false,"family":"Phillips","given":"Laura","email":"","middleInitial":"M.","affiliations":[{"id":7211,"text":"University of Alaska, Fairbanks","active":true,"usgs":false}],"preferred":false,"id":420781,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Powell, A.N.","contributorId":66194,"corporation":false,"usgs":true,"family":"Powell","given":"A.N.","email":"","affiliations":[],"preferred":false,"id":420782,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Rexstad, E.A.","contributorId":47063,"corporation":false,"usgs":true,"family":"Rexstad","given":"E.A.","email":"","affiliations":[],"preferred":false,"id":420780,"contributorType":{"id":1,"text":"Authors"},"rank":3}]}}
,{"id":70028970,"text":"70028970 - 2006 - Quantification of karst aquifer discharge components during storm events through end-member mixing analysis using natural chemistry and stable isotopes as tracers","interactions":[],"lastModifiedDate":"2012-03-12T17:20:57","indexId":"70028970","displayToPublicDate":"2006-01-01T00:00:00","publicationYear":"2006","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1923,"text":"Hydrogeology Journal","active":true,"publicationSubtype":{"id":10}},"title":"Quantification of karst aquifer discharge components during storm events through end-member mixing analysis using natural chemistry and stable isotopes as tracers","docAbstract":"Karst aquifer components that contribute to the discharge of a water supply well in the Classical Karst (Kras) region (Italy/Slovenia) were quantitatively estimated during storm events. Results show that water released from storage within the epikarst may comprise as much as two-thirds of conduit flow in a karst aquifer following rainfall. Principal components analysis (PCA) and end-member mixing analysis (EMMA) were performed using major ion chemistry and the stable isotopes of water (??18O, ??2H) and of dissolved inorganic carbon (??13CDIC) to estimate mixing proportions among three sources: (1) allogenic river recharge, (2) autogenic recharge, and (3) an anthropogenic component stored within the epikarst. The sinking river most influences the chemical composition of the water-supply well under low-flow conditions; however, this proportion changes rapidly during recharge events. Autogenic recharge water, released from shallow storage in the epikarst, displaces the river water and is observed at the well within hours after the onset of precipitation. The autogenic recharge end member is the second largest component of the well chemistry, and its contribution increases with higher flow. An anthropogenic component derived from epikarstic storage also impacts the well under conditions of elevated hydraulic head, accounting for the majority of the chemical response at the well during the wettest conditions. ?? Springer-Verlag 2006.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Hydrogeology Journal","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","doi":"10.1007/s10040-006-0031-6","issn":"14312174","usgsCitation":"Doctor, D., Alexander, E., Petric, M., Kogovsek, J., Urbanc, J., Lojen, S., and Stichler, W., 2006, Quantification of karst aquifer discharge components during storm events through end-member mixing analysis using natural chemistry and stable isotopes as tracers: Hydrogeology Journal, v. 14, no. 7, p. 1171-1191, https://doi.org/10.1007/s10040-006-0031-6.","startPage":"1171","endPage":"1191","numberOfPages":"21","costCenters":[],"links":[{"id":236560,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"},{"id":209831,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1007/s10040-006-0031-6"}],"volume":"14","issue":"7","noUsgsAuthors":false,"publicationDate":"2006-07-11","publicationStatus":"PW","scienceBaseUri":"505a91ace4b0c8380cd803be","contributors":{"authors":[{"text":"Doctor, D.H. Jr.","contributorId":46752,"corporation":false,"usgs":true,"family":"Doctor","given":"D.H.","suffix":"Jr.","email":"","affiliations":[],"preferred":false,"id":420785,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Alexander, E.C. Jr.","contributorId":94062,"corporation":false,"usgs":true,"family":"Alexander","given":"E.C.","suffix":"Jr.","email":"","affiliations":[],"preferred":false,"id":420789,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Petric, M.","contributorId":74938,"corporation":false,"usgs":true,"family":"Petric","given":"M.","email":"","affiliations":[],"preferred":false,"id":420788,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Kogovsek, J.","contributorId":51080,"corporation":false,"usgs":true,"family":"Kogovsek","given":"J.","email":"","affiliations":[],"preferred":false,"id":420786,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Urbanc, J.","contributorId":33512,"corporation":false,"usgs":true,"family":"Urbanc","given":"J.","email":"","affiliations":[],"preferred":false,"id":420783,"contributorType":{"id":1,"text":"Authors"},"rank":5},{"text":"Lojen, S.","contributorId":64012,"corporation":false,"usgs":true,"family":"Lojen","given":"S.","email":"","affiliations":[],"preferred":false,"id":420787,"contributorType":{"id":1,"text":"Authors"},"rank":6},{"text":"Stichler, W.","contributorId":39569,"corporation":false,"usgs":true,"family":"Stichler","given":"W.","email":"","affiliations":[],"preferred":false,"id":420784,"contributorType":{"id":1,"text":"Authors"},"rank":7}]}}
,{"id":70028944,"text":"70028944 - 2006 - Evidence for ground-water stratification near Yucca Mountain, Nevada","interactions":[],"lastModifiedDate":"2012-03-12T17:20:59","indexId":"70028944","displayToPublicDate":"2006-01-01T00:00:00","publicationYear":"2006","noYear":false,"publicationType":{"id":24,"text":"Conference Paper"},"publicationSubtype":{"id":19,"text":"Conference Paper"},"title":"Evidence for ground-water stratification near Yucca Mountain, Nevada","docAbstract":"Major- and trace-element concentrations and strontium isotope ratios (strontium-87/strontium-86) in samples of ground water potentially can be useful in delineating flow paths in the complex ground-water system in the vicinity of Yucca Mountain, Nevada. Water samples were collected from boreholes to characterize the lateral and vertical variability in the composition of water in the saturated zone. Discrete sampling of water-producing intervals in the saturated zone includes isolating borehole sections with packers and extracting pore water from core obtained by sonic drilling. Chemical and isotopic stratification was identified in the saturated zone beneath southern Fortymile Wash.","largerWorkTitle":"Proceedings of the 11th International High Level Radioactive Waste Management Conference, IHLRWM","conferenceTitle":"11th International High Level Radioactive Waste Management Conference","conferenceDate":"30 April 2006 through 4 May 2006","conferenceLocation":"Las Vegas, NV","language":"English","isbn":"0894486918; 9780894486913","usgsCitation":"Futa, K., Marshall, B., and Peterman, Z.E., 2006, Evidence for ground-water stratification near Yucca Mountain, Nevada, <i>in</i> Proceedings of the 11th International High Level Radioactive Waste Management Conference, IHLRWM, v. 2006, Las Vegas, NV, 30 April 2006 through 4 May 2006, p. 301-306.","startPage":"301","endPage":"306","numberOfPages":"6","costCenters":[],"links":[{"id":236277,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"2006","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505a0d41e4b0c8380cd52ee1","contributors":{"authors":[{"text":"Futa, K.","contributorId":26435,"corporation":false,"usgs":true,"family":"Futa","given":"K.","affiliations":[],"preferred":false,"id":420659,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Marshall, B.D.","contributorId":19581,"corporation":false,"usgs":true,"family":"Marshall","given":"B.D.","email":"","affiliations":[],"preferred":false,"id":420658,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Peterman, Z. E.","contributorId":63781,"corporation":false,"usgs":true,"family":"Peterman","given":"Z.","email":"","middleInitial":"E.","affiliations":[],"preferred":false,"id":420660,"contributorType":{"id":1,"text":"Authors"},"rank":3}]}}
,{"id":70028953,"text":"70028953 - 2006 - Use of the moon to support on-orbit sensor calibration for climate change measurements","interactions":[],"lastModifiedDate":"2012-03-12T17:20:58","indexId":"70028953","displayToPublicDate":"2006-01-01T00:00:00","publicationYear":"2006","noYear":false,"publicationType":{"id":24,"text":"Conference Paper"},"publicationSubtype":{"id":19,"text":"Conference Paper"},"title":"Use of the moon to support on-orbit sensor calibration for climate change measurements","docAbstract":"Production of reliable climate datasets from multiple observational measurements acquired by remote sensing satellite systems available now and in the future places stringent requirements on the stability of sensors and consistency among the instruments and platforms. Detecting trends in environmental parameters measured at solar reflectance wavelengths (0.3 to 2.5 microns) requires on-orbit instrument stability at a level of 1% over a decade. This benchmark can be attained using the Moon as a radiometric reference. The lunar calibration program at the U.S. Geological Survey has an operational model to predict the lunar spectral irradiance with precision ???1%, explicitly accounting for the effects of phase, lunar librations, and the lunar surface photometric function. A system for utilization of the Moon by on-orbit instruments has been established. With multiple lunar views taken by a spacecraft instrument, sensor response characterization with sub-percent precision over several years has been achieved. Meteorological satellites in geostationary orbit (GEO) capture the Moon in operational images; applying lunar calibration to GEO visible-channel image archives has the potential to develop a climate record extending decades into the past. The USGS model and system can provide reliable transfer of calibration among instruments that have viewed the Moon as a common source. This capability will be enhanced with improvements to the USGS model absolute scale. Lunar calibration may prove essential to the critical calibration needs to cover a potential gap in observational capabilities prior to deployment of NPP/NPOESS. A key requirement is that current and future instruments observe the Moon.","largerWorkTitle":"Proceedings of SPIE - The International Society for Optical Engineering","conferenceTitle":"Earth Observing Systems XI","conferenceDate":"14 August 2006 through 16 August 2006","conferenceLocation":"San Diego, CA","language":"English","doi":"10.1117/12.678605","issn":"0277786X","isbn":"0819463752; 9780819463753","usgsCitation":"Stone, T., and Kieffer, H.H., 2006, Use of the moon to support on-orbit sensor calibration for climate change measurements, <i>in</i> Proceedings of SPIE - The International Society for Optical Engineering, v. 6296, San Diego, CA, 14 August 2006 through 16 August 2006, https://doi.org/10.1117/12.678605.","costCenters":[],"links":[{"id":209728,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1117/12.678605"},{"id":236423,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"6296","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505bbf9ee4b08c986b329c7a","contributors":{"authors":[{"text":"Stone, T.C.","contributorId":74874,"corporation":false,"usgs":true,"family":"Stone","given":"T.C.","email":"","affiliations":[],"preferred":false,"id":420698,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Kieffer, H. H.","contributorId":40725,"corporation":false,"usgs":false,"family":"Kieffer","given":"H.","email":"","middleInitial":"H.","affiliations":[],"preferred":false,"id":420697,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}}
,{"id":70028954,"text":"70028954 - 2006 - Gimme shelter: The importance of crevices to some fish species inhabiting a deeper-water rocky outcrop in Southern California","interactions":[],"lastModifiedDate":"2012-03-12T17:20:58","indexId":"70028954","displayToPublicDate":"2006-01-01T00:00:00","publicationYear":"2006","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1152,"text":"California Cooperative Oceanic Fisheries Investigations Reports","active":true,"publicationSubtype":{"id":10}},"title":"Gimme shelter: The importance of crevices to some fish species inhabiting a deeper-water rocky outcrop in Southern California","docAbstract":"Federal law governing fisheries management recognizes the role habitat plays in structuring fish assemblages and achieving sustainable fisheries. However, in most instances it is not known which aspects of habitat are important to the lives of fish species. In 2004, we examined the importance of sheltering sites (crevices) to fishes living along low ledges in deeper waters off Anacapa Island, southern California. We found that patterns of fish-habitat relationships varied among the eight most abundant species. Three species, bocaccio (Sebastes paucispinis), vermilion (S. miniatus), and flag (S. rubrivinctus) rockfishes, had densities one to three orders of magnitude greater in the deep crevice habitat compared to low relief rock or shallow crevice habitats. Density and mean size of the two most abundant fishes, halfbanded (S. semicinctus) and squarespot (S. hopkinsi) rockfishes, generally increased as complexity of rock habitat increased. Not all species had the highest densities in deep crevice habitat. Greenspotted rockfish (S. chlorostictus) and blackeye goby (Rhinogobiops nicholsii) showed no significant difference in density among rock habitats. Pink seaperch (Zalembius rosaceus) were absent in the deep crevice habitat and abundant only in low relief rock habitats. Our study implies that it is not sufficient to distinguish only between soft and hard bottom types when using habitat to guide fisheries management strategies. Finer-scale investigations of fish-habitat relationships, paired with habitat mapping and groundtruthing, aid in the design and positioning of Marine Park Areas (MPAs) and are necessary to facilitate understanding of how a particular MPA may contribute to fisheries management.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"California Cooperative Oceanic Fisheries Investigations Reports","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","issn":"05753317","usgsCitation":"Love, M., Schroeder, D., Lenarz, B., and Cochrane, G., 2006, Gimme shelter: The importance of crevices to some fish species inhabiting a deeper-water rocky outcrop in Southern California: California Cooperative Oceanic Fisheries Investigations Reports, v. 47, p. 119-126.","startPage":"119","endPage":"126","numberOfPages":"8","costCenters":[],"links":[{"id":236456,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"47","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505a28f7e4b0c8380cd5a595","contributors":{"authors":[{"text":"Love, M.S.","contributorId":75319,"corporation":false,"usgs":true,"family":"Love","given":"M.S.","email":"","affiliations":[],"preferred":false,"id":420700,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Schroeder, D.M.","contributorId":68947,"corporation":false,"usgs":true,"family":"Schroeder","given":"D.M.","email":"","affiliations":[],"preferred":false,"id":420699,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Lenarz, B.","contributorId":82111,"corporation":false,"usgs":true,"family":"Lenarz","given":"B.","email":"","affiliations":[],"preferred":false,"id":420701,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Cochrane, G.R.","contributorId":104002,"corporation":false,"usgs":true,"family":"Cochrane","given":"G.R.","email":"","affiliations":[],"preferred":false,"id":420702,"contributorType":{"id":1,"text":"Authors"},"rank":4}]}}
,{"id":70030378,"text":"70030378 - 2006 - Characterization of surface and ground water δ18O seasonal variation and its use for estimating groundwater residence times","interactions":[],"lastModifiedDate":"2021-01-22T17:03:46.75923","indexId":"70030378","displayToPublicDate":"2006-01-01T00:00:00","publicationYear":"2006","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1924,"text":"Hydrological Processes","active":true,"publicationSubtype":{"id":10}},"displayTitle":"Characterization of surface and ground water δ<sup>18</sup>O seasonal variation and its use for estimating groundwater residence times","title":"Characterization of surface and ground water δ18O seasonal variation and its use for estimating groundwater residence times","docAbstract":"<p><sup>18</sup><span>O is an ideal tracer for characterizing hydrological processes because it can be reliably measured in several watershed hydrological compartments. Here, we present multiyear isotopic data, i.e.&nbsp;</span><sup>18</sup><span>O variations (&delta;</span><sup>18</sup><span>O), for precipitation inputs, surface water and groundwater in the Shingobee River Headwaters Area (SRHA), a well-instrumented research catchment in north-central Minnesota. SRHA surface waters exhibit &delta;</span><sup>18</sup><span>O seasonal variations similar to those of groundwaters, and seasonal &delta;</span><sup>18</sup><span>O variations plotted versus time fit seasonal sine functions. These seasonal &delta;</span><sup>18</sup><span>O variations were interpreted to estimate surface water and groundwater mean residence times (MRTs) at sampling locations near topographically closed-basin lakes. MRT variations of about 1 to 16 years have been estimated over an area covering about 9 km</span><sup>2</sup><span>&nbsp;from the basin boundary to the most downgradient well. Estimated MRT error (&plusmn;0&middot;3 to &plusmn;0&middot;7 years) is small for short MRTs and is much larger (&plusmn;10 years) for a well with an MRT (16 years) near the limit of the method. Groundwater transit time estimates based on Darcy's law, tritium content, and the seasonal &delta;</span><sup>18</sup><span>O amplitude approach appear to be consistent within the limits of each method. The results from this study suggest that use of the &delta;</span><sup>18</sup><span>O seasonal variation method to determine MRTs can help assess groundwater recharge areas in small headwaters catchments.</span></p>","language":"English","publisher":"Wiley","doi":"10.1002/hyp.5953","usgsCitation":"Reddy, M.M., Schuster, P.F., Kendall, C., and Reddy, M.B., 2006, Characterization of surface and ground water δ18O seasonal variation and its use for estimating groundwater residence times: Hydrological Processes, v. 20, no. 8, p. 1753-1772, https://doi.org/10.1002/hyp.5953.","productDescription":"20 p.","startPage":"1753","endPage":"1772","onlineOnly":"N","additionalOnlineFiles":"N","costCenters":[{"id":589,"text":"Toxic Substances Hydrology Program","active":true,"usgs":true}],"links":[{"id":239168,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"United States","state":"Minnesota","otherGeospatial":"Shingobee River Headwaters Area","geographicExtents":"{\n  \"type\": \"FeatureCollection\",\n  \"features\": [\n    {\n      \"type\": \"Feature\",\n      \"properties\": {},\n      \"geometry\": {\n        \"type\": \"Polygon\",\n        \"coordinates\": [\n          [\n            [\n              -95.152587890625,\n              46.33175800051563\n            ],\n            [\n              -95.152587890625,\n              47.368594345213374\n            ],\n            [\n              -93.69140625,\n              47.368594345213374\n            ],\n            [\n              -93.69140625,\n              46.33175800051563\n            ],\n            [\n              -95.152587890625,\n              46.33175800051563\n            ]\n          ]\n        ]\n      }\n    }\n  ]\n}","volume":"20","issue":"8","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"5059f4dde4b0c8380cd4bf85","contributors":{"authors":[{"text":"Reddy, Michael M. mmreddy@usgs.gov","contributorId":684,"corporation":false,"usgs":true,"family":"Reddy","given":"Michael","email":"mmreddy@usgs.gov","middleInitial":"M.","affiliations":[{"id":145,"text":"Branch of Regional Research-Central Region","active":false,"usgs":true}],"preferred":true,"id":426915,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Schuster, Paul F. 0000-0002-8314-1372 pschuste@usgs.gov","orcid":"https://orcid.org/0000-0002-8314-1372","contributorId":1360,"corporation":false,"usgs":true,"family":"Schuster","given":"Paul","email":"pschuste@usgs.gov","middleInitial":"F.","affiliations":[{"id":5044,"text":"National Research Program - Central Branch","active":true,"usgs":true},{"id":438,"text":"National Research Program - Western Branch","active":true,"usgs":true}],"preferred":true,"id":426917,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Kendall, Carol 0000-0002-0247-3405 ckendall@usgs.gov","orcid":"https://orcid.org/0000-0002-0247-3405","contributorId":1462,"corporation":false,"usgs":true,"family":"Kendall","given":"Carol","email":"ckendall@usgs.gov","affiliations":[{"id":438,"text":"National Research Program - Western Branch","active":true,"usgs":true}],"preferred":true,"id":426916,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Reddy, Micaela B.","contributorId":7947,"corporation":false,"usgs":true,"family":"Reddy","given":"Micaela","email":"","middleInitial":"B.","affiliations":[],"preferred":false,"id":426918,"contributorType":{"id":1,"text":"Authors"},"rank":4}]}}
,{"id":70030668,"text":"70030668 - 2006 - Daily energy expenditure in free-ranging Gopher Tortoises (Gopherus polyphemus)","interactions":[],"lastModifiedDate":"2012-03-12T17:21:00","indexId":"70030668","displayToPublicDate":"2006-01-01T00:00:00","publicationYear":"2006","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1337,"text":"Copeia","active":true,"publicationSubtype":{"id":10}},"title":"Daily energy expenditure in free-ranging Gopher Tortoises (Gopherus polyphemus)","docAbstract":"Studies of ecological energetics in chelonians are rare. Here, we report the first measurements of daily energy expenditure (DEE) and water influx rates (WIRs) in free-ranging adult Gopher Tortoises (Gopherus polyphemus). We used the doubly labeled water (DLW) method to measure DEE in six adult tortoises during the non-breeding season in south-central Mississippi, USA. Tortoise DEE ranged from 76.7-187.5 kj/day and WIR ranged from 30.6-93.1 ml H2O/day. Daily energy expenditure did not differ between the sexes, but DEE was positively related to body mass. Water influx rates varied with the interaction of sex and body mass. We used a log/log regression model to assess the allometric relationship between DEE and body mass for Gopher Tortoises, Desert Tortoises (Gopherus agassizii), and Box Turtles (Terrapene carolina), the only chelonians for which DEE has been measured. The slope of this allometric model (0.626) was less than that previously calculated for herbivorous reptiles (0.813), suggesting that chelonians may expend energy at a slower rate per unit of body mass compared to other herbivorous reptiles. We used retrospective power analyses and data from the DLW isotope analyses to develop guidelines for sample sizes and duration of measurement intervals, respectively, for larger-scale energetic studies in this species. ?? 2006 by the American Society of Ichthyologists and Herpetologists.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Copeia","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","doi":"10.1643/0045-8511(2006)006[0129:DEEIFG]2.0.CO;2","issn":"00458511","usgsCitation":"Jodice, P., Epperson, D., and Visser, G.H., 2006, Daily energy expenditure in free-ranging Gopher Tortoises (Gopherus polyphemus): Copeia, no. 1, p. 129-136, https://doi.org/10.1643/0045-8511(2006)006[0129:DEEIFG]2.0.CO;2.","startPage":"129","endPage":"136","numberOfPages":"8","costCenters":[],"links":[{"id":211936,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1643/0045-8511(2006)006[0129:DEEIFG]2.0.CO;2"},{"id":239321,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"issue":"1","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"5059fd59e4b0c8380cd4e7bd","contributors":{"authors":[{"text":"Jodice, P.G.R.","contributorId":79846,"corporation":false,"usgs":true,"family":"Jodice","given":"P.G.R.","email":"","affiliations":[],"preferred":false,"id":428132,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Epperson, D.M. 0000-0002-0567-4915","orcid":"https://orcid.org/0000-0002-0567-4915","contributorId":95246,"corporation":false,"usgs":true,"family":"Epperson","given":"D.M.","affiliations":[],"preferred":false,"id":428133,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Visser, G. Henk","contributorId":105497,"corporation":false,"usgs":false,"family":"Visser","given":"G.","email":"","middleInitial":"Henk","affiliations":[],"preferred":false,"id":428134,"contributorType":{"id":1,"text":"Authors"},"rank":3}]}}
,{"id":70030746,"text":"70030746 - 2006 - Genetic structure of eelgrass Zostera marina meadows in an embayment with restricted water flow","interactions":[],"lastModifiedDate":"2018-08-20T18:17:47","indexId":"70030746","displayToPublicDate":"2006-01-01T00:00:00","publicationYear":"2006","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2663,"text":"Marine Ecology Progress Series","active":true,"publicationSubtype":{"id":10}},"displayTitle":"Genetic structure of eelgrass <i>Zostera marina</i> meadows in an embayment with restricted water flow","title":"Genetic structure of eelgrass Zostera marina meadows in an embayment with restricted water flow","docAbstract":"<p>Genetic structure of the seagrass <i>Zostera marina</i> in a coastal lagoon with restricted water flow, and with heterogeneous water residence times and oceanographic characteristics, was assessed using 8 polymorphic microsatellite loci. Analyses of genetic differentiation (θ) and Bayesian clustering suggested that the <i>Z. marina</i> population in San Quintin Bay (SQB) is genetically substructured, with at least 4 genetically different groups: (1) West Head, (2) Mouth, (3) East Arm, and (4) East Head. The greatest θ value was observed between the most distant sites (θ = 0.095). The lowest values were found among sites closest to the mouth of the coastal lagoon (θ = 0.000 to 0.009). The maximum likelihood approach showed that the sites at the mouth have a mixed pattern of gene flow without a unidirectional pattern. In contrast, there was a clear pattern of asymmetrical gene flow from the mouth towards the West Head. These results suggested that the restriction of water flow at the heads, current pattern, and the distance between sites can reduce genetic flow and promote genetic differences within <i>Z. marina</i> meadows in small water embayments such as SQB. Though the population is genetically substructured and a 14% decline in cover has been detected, this study did not show evidence of a recent genetic bottleneck. In contrast, mouth sites have experienced a recent expansion in their population size, and also perhaps a recent influx of rare alleles from genetically distinct immigrants </p>","language":"English","publisher":"Inter-Research","doi":"10.3354/meps309107","usgsCitation":"Muniz-Salazar, R., Talbot, S.L., Sage, G.K., Ward, D.H., and Cabello-Pasini, A., 2006, Genetic structure of eelgrass Zostera marina meadows in an embayment with restricted water flow: Marine Ecology Progress Series, v. 309, p. 107-116, https://doi.org/10.3354/meps309107.","productDescription":"10 p.","startPage":"107","endPage":"116","onlineOnly":"N","additionalOnlineFiles":"N","costCenters":[{"id":114,"text":"Alaska Science Center","active":true,"usgs":true}],"links":[{"id":477507,"rank":1,"type":{"id":40,"text":"Open Access Publisher Index Page"},"url":"https://doi.org/10.3354/meps309107","text":"Publisher Index Page"},{"id":238888,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"309","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505a1586e4b0c8380cd54e61","contributors":{"authors":[{"text":"Muniz-Salazar, Raquel","contributorId":194242,"corporation":false,"usgs":false,"family":"Muniz-Salazar","given":"Raquel","email":"","affiliations":[],"preferred":false,"id":428498,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Talbot, Sandra L. 0000-0002-3312-7214 stalbot@usgs.gov","orcid":"https://orcid.org/0000-0002-3312-7214","contributorId":140512,"corporation":false,"usgs":true,"family":"Talbot","given":"Sandra","email":"stalbot@usgs.gov","middleInitial":"L.","affiliations":[{"id":114,"text":"Alaska Science Center","active":true,"usgs":true},{"id":117,"text":"Alaska Science Center Biology WTEB","active":true,"usgs":true}],"preferred":true,"id":428496,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Sage, George K. 0000-0003-1431-2286 ksage@usgs.gov","orcid":"https://orcid.org/0000-0003-1431-2286","contributorId":87833,"corporation":false,"usgs":true,"family":"Sage","given":"George","email":"ksage@usgs.gov","middleInitial":"K.","affiliations":[{"id":117,"text":"Alaska Science Center Biology WTEB","active":true,"usgs":true}],"preferred":false,"id":428495,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Ward, David H. 0000-0002-5242-2526 dward@usgs.gov","orcid":"https://orcid.org/0000-0002-5242-2526","contributorId":3247,"corporation":false,"usgs":true,"family":"Ward","given":"David","email":"dward@usgs.gov","middleInitial":"H.","affiliations":[{"id":114,"text":"Alaska Science Center","active":true,"usgs":true},{"id":117,"text":"Alaska Science Center Biology WTEB","active":true,"usgs":true}],"preferred":true,"id":428497,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Cabello-Pasini, Alejandro","contributorId":80636,"corporation":false,"usgs":true,"family":"Cabello-Pasini","given":"Alejandro","affiliations":[],"preferred":false,"id":428499,"contributorType":{"id":1,"text":"Authors"},"rank":5}]}}
,{"id":70030778,"text":"70030778 - 2006 - Phylogeography, phylogeny and hybridization in trichechid sirenians: Implications for manatee conservation","interactions":[],"lastModifiedDate":"2020-09-25T15:04:01.326936","indexId":"70030778","displayToPublicDate":"2006-01-01T00:00:00","publicationYear":"2006","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2774,"text":"Molecular Ecology","active":true,"publicationSubtype":{"id":10}},"title":"Phylogeography, phylogeny and hybridization in trichechid sirenians: Implications for manatee conservation","docAbstract":"<p><span>The three living species of manatees, West Indian (</span><i>Trichechus manatus</i><span>), Amazonian (</span><i>Trichechus inunguis</i><span>) and West African (</span><i>Trichechus senegalensis</i><span>), are distributed across the shallow tropical and subtropical waters of America and the western coast of Africa. We have sequenced the mitochondrial DNA control region in 330&nbsp;</span><i>Trichechus</i><span>&nbsp;to compare their phylogeographic patterns. In&nbsp;</span><i>T</i><span>.&nbsp;</span><i>manatus</i><span>&nbsp;we observed a marked population structure with the identification of three haplotype clusters showing a distinct spatial distribution. A geographic barrier represented by the continuity of the Lesser Antilles to Trinidad Island, near the mouth of the Orinoco River in Venezuela, appears to have restricted the gene flow historically in&nbsp;</span><i>T</i><span>.&nbsp;</span><i>manatus</i><span>. However, for&nbsp;</span><i>T. inunguis</i><span>&nbsp;we observed a single expanding population cluster, with a high diversity of very closely related haplotypes. A marked geographic population structure is likely present in&nbsp;</span><i>T</i><span>.&nbsp;</span><i>senegalensis</i><span>&nbsp;with at least two distinct clusters. Phylogenetic analyses with the mtDNA cytochrome&nbsp;</span><i>b</i><span>&nbsp;gene suggest a clade of the marine&nbsp;</span><i>Trichechus</i><span>&nbsp;species, with&nbsp;</span><i>T</i><span>.&nbsp;</span><i>inunguis</i><span>&nbsp;as the most basal trichechid. This is in agreement with previous morphological analyses. Mitochondrial DNA, autosomal microsatellites and cytogenetic analyses revealed the presence of hybrids between the&nbsp;</span><i>T</i><span>.&nbsp;</span><i>manatus</i><span>&nbsp;and&nbsp;</span><i>T</i><span>.&nbsp;</span><i>inunguis</i><span>&nbsp;species at the mouth of the Amazon River in Brazil, extending to the Guyanas and probably as far as the mouth of the Orinoco River. Future conservation strategies should consider the distinct population structure of manatee species, as well as the historical barriers to gene flow and the likely occurrence of interspecific hybridization.</span></p>","language":"English","publisher":"Wiley","doi":"10.1111/j.1365-294X.2005.02771.x","usgsCitation":"Vianna, J.A., Bonde, R.K., Caballero, S., Giraldo, J.P., Lima, R.P., Clark, A., Marmontel, M., Morales-Vela, B., De Souza, M.J., Parr, L., Rodriguez-Lopez, M.A., Mignucci-Giannoni, A.A., Powell, J.A., and Santos, F.R., 2006, Phylogeography, phylogeny and hybridization in trichechid sirenians: Implications for manatee conservation: Molecular Ecology, v. 15, no. 2, p. 433-447, https://doi.org/10.1111/j.1365-294X.2005.02771.x.","productDescription":"15 p.","startPage":"433","endPage":"447","numberOfPages":"15","costCenters":[{"id":17705,"text":"Wetland and Aquatic Research Center","active":true,"usgs":true}],"links":[{"id":238922,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"15","issue":"2","noUsgsAuthors":false,"publicationDate":"2006-01-09","publicationStatus":"PW","scienceBaseUri":"505a7a63e4b0c8380cd78ea1","contributors":{"authors":[{"text":"Vianna, J. A.","contributorId":23905,"corporation":false,"usgs":false,"family":"Vianna","given":"J.","email":"","middleInitial":"A.","affiliations":[],"preferred":false,"id":428624,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Bonde, Robert K. 0000-0001-9179-4376 rbonde@usgs.gov","orcid":"https://orcid.org/0000-0001-9179-4376","contributorId":2675,"corporation":false,"usgs":true,"family":"Bonde","given":"Robert","email":"rbonde@usgs.gov","middleInitial":"K.","affiliations":[{"id":17705,"text":"Wetland and Aquatic Research Center","active":true,"usgs":true},{"id":566,"text":"Southeast Ecological Science Center","active":true,"usgs":true}],"preferred":true,"id":428631,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Caballero, S.","contributorId":86734,"corporation":false,"usgs":false,"family":"Caballero","given":"S.","email":"","affiliations":[],"preferred":false,"id":428634,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Giraldo, J. P.","contributorId":30591,"corporation":false,"usgs":false,"family":"Giraldo","given":"J.","email":"","middleInitial":"P.","affiliations":[],"preferred":false,"id":428625,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Lima, R. P.","contributorId":99948,"corporation":false,"usgs":false,"family":"Lima","given":"R.","email":"","middleInitial":"P.","affiliations":[],"preferred":false,"id":428636,"contributorType":{"id":1,"text":"Authors"},"rank":5},{"text":"Clark, A.","contributorId":50476,"corporation":false,"usgs":false,"family":"Clark","given":"A.","affiliations":[],"preferred":false,"id":428630,"contributorType":{"id":1,"text":"Authors"},"rank":6},{"text":"Marmontel, M.","contributorId":37671,"corporation":false,"usgs":false,"family":"Marmontel","given":"M.","affiliations":[],"preferred":false,"id":428627,"contributorType":{"id":1,"text":"Authors"},"rank":7},{"text":"Morales-Vela, B.","contributorId":32481,"corporation":false,"usgs":false,"family":"Morales-Vela","given":"B.","email":"","affiliations":[],"preferred":false,"id":428626,"contributorType":{"id":1,"text":"Authors"},"rank":8},{"text":"De Souza, M. J.","contributorId":79288,"corporation":false,"usgs":false,"family":"De Souza","given":"M.","email":"","middleInitial":"J.","affiliations":[],"preferred":false,"id":428633,"contributorType":{"id":1,"text":"Authors"},"rank":9},{"text":"Parr, L.","contributorId":38947,"corporation":false,"usgs":false,"family":"Parr","given":"L.","email":"","affiliations":[],"preferred":false,"id":428628,"contributorType":{"id":1,"text":"Authors"},"rank":10},{"text":"Rodriguez-Lopez, M. A.","contributorId":99523,"corporation":false,"usgs":false,"family":"Rodriguez-Lopez","given":"M.","email":"","middleInitial":"A.","affiliations":[],"preferred":false,"id":428635,"contributorType":{"id":1,"text":"Authors"},"rank":11},{"text":"Mignucci-Giannoni, A. A.","contributorId":11351,"corporation":false,"usgs":false,"family":"Mignucci-Giannoni","given":"A.","email":"","middleInitial":"A.","affiliations":[],"preferred":false,"id":428623,"contributorType":{"id":1,"text":"Authors"},"rank":12},{"text":"Powell, J. A.","contributorId":69916,"corporation":false,"usgs":false,"family":"Powell","given":"J.","email":"","middleInitial":"A.","affiliations":[],"preferred":false,"id":428632,"contributorType":{"id":1,"text":"Authors"},"rank":13},{"text":"Santos, F. R.","contributorId":42567,"corporation":false,"usgs":false,"family":"Santos","given":"F.","email":"","middleInitial":"R.","affiliations":[],"preferred":false,"id":428629,"contributorType":{"id":1,"text":"Authors"},"rank":14}]}}
,{"id":70030715,"text":"70030715 - 2006 - Dependence of soil respiration on soil temperature and soil moisture in successional forests in Southern China","interactions":[],"lastModifiedDate":"2017-04-11T15:46:08","indexId":"70030715","displayToPublicDate":"2006-01-01T00:00:00","publicationYear":"2006","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2358,"text":"Journal of Integrative Plant Biology","active":true,"publicationSubtype":{"id":10}},"title":"Dependence of soil respiration on soil temperature and soil moisture in successional forests in Southern China","docAbstract":"<p><span>The spatial and temporal variations in soil respiration and its relationship with biophysical factors in forests near the Tropic of Cancer remain highly uncertain. To contribute towards an improvement of actual estimates, soil respiration rates, soil temperature, and soil moisture were measured in three successional subtropical forests at the Dinghushan Nature Reserve (DNR) in southern China from March 2003 to February 2005. The overall objective of the present study was to analyze the temporal variations of soil respiration and its biophysical dependence in these forests. The relationships between biophysical factors and soil respiration rates were compared in successional forests to test the hypothesis that these forests responded similarly to biophysical factors. The seasonality of soil respiration coincided with the seasonal climate pattern, with high respiration rates in the hot humid season (April-September) and with low rates in the cool dry season (October-March). Soil respiration measured at these forests showed a clear increasing trend with the progressive succession. Annual mean (±</span><i>SD</i><span>) soil respiration rate in the DNR forests was (9.0 ± 4.6) Mg CO</span><sub>2</sub><span>-C/hm</span><sup>2</sup><span>per year, ranging from (6.1 ± 3.2) Mg CO</span><sub>2</sub><span>-C/hm</span><sup>2</sup><span>per year in early successional forests to (10.7 ± 4.9) Mg CO</span><sub>2</sub><span>-C/hm</span><sup>2</sup><span> per year in advanced successional forests. Soil respiration was correlated with both soil temperature and moisture. The T/M model, where the two biophysical variables are driving factors, accounted for 74%-82% of soil respiration variation in DNR forests. Temperature sensitivity decreased along progressive succession stages, suggesting that advanced-successional forests have a good ability to adjust to temperature. In contrast, moisture increased with progressive succession processes. This increase is caused, in part, by abundant respirators in advanced-successional forest, where more soil moisture is needed to maintain their activities.</span></p>","language":"English","publisher":"Wiley","doi":"10.1111/j.1744-7909.2006.00263.x","issn":"16729072","usgsCitation":"Tang, X., Zhou, G., Liu, S., Zhang, D., Liu, S., Li, J., and Zhou, C., 2006, Dependence of soil respiration on soil temperature and soil moisture in successional forests in Southern China: Journal of Integrative Plant Biology, v. 48, no. 6, p. 654-663, https://doi.org/10.1111/j.1744-7909.2006.00263.x.","productDescription":"10 p.","startPage":"654","endPage":"663","numberOfPages":"10","costCenters":[{"id":222,"text":"Earth Resources Observation and Science (EROS) Center","active":true,"usgs":true}],"links":[{"id":239501,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"},{"id":212083,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1111/j.1744-7909.2006.00263.x"}],"volume":"48","issue":"6","noUsgsAuthors":false,"publicationDate":"2006-06-07","publicationStatus":"PW","scienceBaseUri":"5059feb0e4b0c8380cd4ee81","contributors":{"authors":[{"text":"Tang, X.-L.","contributorId":19778,"corporation":false,"usgs":true,"family":"Tang","given":"X.-L.","email":"","affiliations":[],"preferred":false,"id":428359,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Zhou, G.-Y.","contributorId":37522,"corporation":false,"usgs":true,"family":"Zhou","given":"G.-Y.","affiliations":[],"preferred":false,"id":428362,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Liu, S.-G.","contributorId":74574,"corporation":false,"usgs":true,"family":"Liu","given":"S.-G.","email":"","affiliations":[],"preferred":false,"id":428364,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Zhang, D.-Q.","contributorId":25360,"corporation":false,"usgs":true,"family":"Zhang","given":"D.-Q.","email":"","affiliations":[],"preferred":false,"id":428361,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Liu, S.-Z.","contributorId":62410,"corporation":false,"usgs":true,"family":"Liu","given":"S.-Z.","email":"","affiliations":[],"preferred":false,"id":428363,"contributorType":{"id":1,"text":"Authors"},"rank":5},{"text":"Li, Ji","contributorId":22916,"corporation":false,"usgs":true,"family":"Li","given":"Ji","email":"","affiliations":[],"preferred":false,"id":428360,"contributorType":{"id":1,"text":"Authors"},"rank":6},{"text":"Zhou, C.-Y.","contributorId":7910,"corporation":false,"usgs":true,"family":"Zhou","given":"C.-Y.","email":"","affiliations":[],"preferred":false,"id":428358,"contributorType":{"id":1,"text":"Authors"},"rank":7}]}}
,{"id":70030714,"text":"70030714 - 2006 - Reproducibility of geochemical and climatic signals in the Atlantic coral Montastraea faveolata","interactions":[],"lastModifiedDate":"2012-03-12T17:21:10","indexId":"70030714","displayToPublicDate":"2006-01-01T00:00:00","publicationYear":"2006","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":3002,"text":"Paleoceanography","active":true,"publicationSubtype":{"id":10}},"title":"Reproducibility of geochemical and climatic signals in the Atlantic coral Montastraea faveolata","docAbstract":"Monthly resolved, 41-year-long stable isotopic and elemental ratio time series were generated from two separate heads of Montastraea faveolata from Looe Key, Florida, to assess the fidelity of using geochemical variations in Montastraea, the dominant reef-building coral of the Atlantic, to reconstruct sea surface environmental conditions at this site. The stable isotope time series of the two corals replicate well; mean values of ??18O and ??13C are indistinguishable between cores (compare 0.70??? versus 0.68??? for ??13C and -3.90??? versus - 3.94??? for ??18O). Mean values from the Sr/Ca time series differ by 0.037 mmol/mol, which is outside of analytical error and indicates that nonenvironmental factors are influencing the coral Sr/ Ca records at Looe Key. We have generated significant ?? 18O-sea surface temperature (SST) (R = -0.84) and Sr/ Ca-SST (R = -0.86) calibration equations at Looe Key; however, these equations are different from previously published equations for Montastraea. Variations in growth parameters or kinetic effects are not sufficient to explain either the observed differences in the mean offset between Sr/Ca time series or the disagreement between previous calibrations and our calculated ??18O-SST and Sr/Ca-SST relationships. Calibration differences are most likely due to variations in seawater chemistry in the continentally influenced waters at Looe Key. Additional geochemical replication studies of Montastraea are needed and should include multiple coral heads from open ocean localities complemented whenever possible by seawater chemistry determinations. Copyright 2006 by the American Geophysical Union.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Paleoceanography","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","doi":"10.1029/2005PA001187","issn":"08838305","usgsCitation":"Smith, J.M., Quinn, T.M., Helmle, K., and Halley, R.B., 2006, Reproducibility of geochemical and climatic signals in the Atlantic coral Montastraea faveolata: Paleoceanography, v. 21, no. 1, https://doi.org/10.1029/2005PA001187.","costCenters":[],"links":[{"id":239500,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"},{"id":212082,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1029/2005PA001187"}],"volume":"21","issue":"1","noUsgsAuthors":false,"publicationDate":"2006-03-08","publicationStatus":"PW","scienceBaseUri":"505aa88be4b0c8380cd85978","contributors":{"authors":[{"text":"Smith, Joseph M.","contributorId":106712,"corporation":false,"usgs":false,"family":"Smith","given":"Joseph","email":"","middleInitial":"M.","affiliations":[{"id":6932,"text":"University of Massachusetts, Amherst","active":true,"usgs":false},{"id":17855,"text":"School of Aquatic and Fishery Sciences, University of Washington, Seattle, WA","active":true,"usgs":false}],"preferred":false,"id":428357,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Quinn, T. M.","contributorId":71320,"corporation":false,"usgs":true,"family":"Quinn","given":"T.","email":"","middleInitial":"M.","affiliations":[],"preferred":false,"id":428355,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Helmle, K.P.","contributorId":53163,"corporation":false,"usgs":true,"family":"Helmle","given":"K.P.","email":"","affiliations":[],"preferred":false,"id":428354,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Halley, R. B.","contributorId":87941,"corporation":false,"usgs":true,"family":"Halley","given":"R.","email":"","middleInitial":"B.","affiliations":[],"preferred":false,"id":428356,"contributorType":{"id":1,"text":"Authors"},"rank":4}]}}
,{"id":70030711,"text":"70030711 - 2006 - Cross-shore velocity shear, eddies and heterogeneity in water column properties over fringing coral reefs: West Maui, Hawaii","interactions":[],"lastModifiedDate":"2012-03-12T17:21:01","indexId":"70030711","displayToPublicDate":"2006-01-01T00:00:00","publicationYear":"2006","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1333,"text":"Continental Shelf Research","active":true,"publicationSubtype":{"id":10}},"title":"Cross-shore velocity shear, eddies and heterogeneity in water column properties over fringing coral reefs: West Maui, Hawaii","docAbstract":"A multi-day hydrographic survey cruise was conducted to acquire spatially extensive, but temporally limited, high-resolution, three-dimensional measurements of currents, temperature, salinity and turbidity off West Maui in the summer of 2003 to better understand coastal dynamics along a complex island shoreline with coral reefs. These data complement long-term, high-resolution tide, wave, current, temperature, salinity and turbidity measurements made at a number of fixed locations in the study area starting in 2001. Analyses of these hydrographic data, in conjunction with numerous field observations, evoke the following conceptual model of water and turbidity flux along West Maui. Wave- and wind-driven flows appear to be the primary control on flow over shallower portions of the reefs while tidal and subtidal currents dominate flow over the outer portions of the reefs and insular shelf. When the direction of these flows counter one another, which is quite common, they cause a zone of cross-shore horizontal shear and often form a front, with turbid, lower-salinity water inshore of the front and clear, higher-salinity water offshore of the front. It is not clear whether these zones of high shear and fronts are the cause or the result of the location of the fore reef, but they appear to be correlated alongshore over relatively large horizontal distances (orders of kilometers). When two flows converge or when a single flow is bathymetrically steered, eddies can be generated that, in the absence of large ocean surface waves, tend to accumulate material. Areas of higher turbidity and lower salinity tend to correlate with regions of poor coral health or the absence of well-developed reefs, suggesting that the oceanographic processes that concentrate and/or transport nutrients, contaminants, low-salinity water or suspended sediment might strongly influence coral reef ecosystem health and sustainability.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Continental Shelf Research","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","doi":"10.1016/j.csr.2005.12.006","issn":"02784343","usgsCitation":"Storlazzi, C., McManus, M., Logan, J., and McLaughlin, B., 2006, Cross-shore velocity shear, eddies and heterogeneity in water column properties over fringing coral reefs: West Maui, Hawaii: Continental Shelf Research, v. 26, no. 3, p. 401-421, https://doi.org/10.1016/j.csr.2005.12.006.","startPage":"401","endPage":"421","numberOfPages":"21","costCenters":[],"links":[{"id":212027,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1016/j.csr.2005.12.006"},{"id":239430,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"26","issue":"3","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"5059fcc6e4b0c8380cd4e41d","contributors":{"authors":[{"text":"Storlazzi, C. D. 0000-0001-8057-4490","orcid":"https://orcid.org/0000-0001-8057-4490","contributorId":98905,"corporation":false,"usgs":true,"family":"Storlazzi","given":"C. D.","affiliations":[],"preferred":false,"id":428345,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"McManus, M.A.","contributorId":73390,"corporation":false,"usgs":true,"family":"McManus","given":"M.A.","email":"","affiliations":[],"preferred":false,"id":428344,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Logan, J.B.","contributorId":43150,"corporation":false,"usgs":true,"family":"Logan","given":"J.B.","email":"","affiliations":[],"preferred":false,"id":428343,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"McLaughlin, B.E.","contributorId":36362,"corporation":false,"usgs":true,"family":"McLaughlin","given":"B.E.","email":"","affiliations":[],"preferred":false,"id":428342,"contributorType":{"id":1,"text":"Authors"},"rank":4}]}}
,{"id":70030855,"text":"70030855 - 2006 - Permanent 'phase shifts' or reversible declines in coral cover? Lack of recovery of two coral reefs in St. John, U.S. Virgin Islands","interactions":[],"lastModifiedDate":"2021-07-06T12:07:08.376779","indexId":"70030855","displayToPublicDate":"2006-01-01T00:00:00","publicationYear":"2006","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2663,"text":"Marine Ecology Progress Series","active":true,"publicationSubtype":{"id":10}},"title":"Permanent 'phase shifts' or reversible declines in coral cover? Lack of recovery of two coral reefs in St. John, U.S. Virgin Islands","docAbstract":"<p><span>Caribbean coral reefs have changed dramatically in the last 3 to 4 decades, with significant loss of coral cover and increases in algae. Here we present trends in benthic cover from 1989 to 2003 at 2 reefs (Lameshur Reef and Newfound Reef) off St. John, US Virgin Islands (USVI). Coral cover has declined in the fore-reef zones at both sites, and no recovery is evident. At Lameshur Reef, Hurricane Hugo (1989) caused significant physical damage and loss of coral. We suggest that macroalgae rapidly colonized new substrate made available by this storm and have hindered or prevented growth of adult corals, as well as settlement and survival of new coral recruits. Overfishing of herbivorous fishes in the USVI and loss of shelter for these fishes because of major storms has presumably reduced the levels of herbivory that formerly controlled algal abundance. Coral cover declined at Newfound Reef from 1999 to 2000, most likely because of coral diseases. The trends that we have documented, loss of coral followed by no evidence of recovery, appear similar to findings from other studies in the Caribbean. We need to focus on functional shifts in the resilience of coral reefs that result in their inability to recover from natural and human-caused stressors.</span></p>","language":"English","publisher":"Inter-Research Science Publisher","doi":"10.3354/meps306103","issn":"01718630","usgsCitation":"Rogers, C., and Miller, J., 2006, Permanent 'phase shifts' or reversible declines in coral cover? Lack of recovery of two coral reefs in St. John, U.S. Virgin Islands: Marine Ecology Progress Series, v. 306, p. 103-114, https://doi.org/10.3354/meps306103.","productDescription":"12 p.","startPage":"103","endPage":"114","costCenters":[],"links":[{"id":488191,"rank":0,"type":{"id":40,"text":"Open Access Publisher Index Page"},"url":"https://doi.org/10.3354/meps306103","text":"Publisher Index Page"},{"id":386951,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"United  States","otherGeospatial":"U.S. Virgin Islands","geographicExtents":"{\n  \"type\": \"FeatureCollection\",\n  \"features\": [\n    {\n      \"type\": \"Feature\",\n      \"properties\": {},\n      \"geometry\": {\n        \"type\": \"Polygon\",\n        \"coordinates\": [\n          [\n            [\n              -65.181884765625,\n              17.58643052828743\n            ],\n            [\n              -64.368896484375,\n              17.58643052828743\n            ],\n            [\n              -64.368896484375,\n              17.95260646769184\n            ],\n            [\n              -65.181884765625,\n              17.95260646769184\n            ],\n            [\n              -65.181884765625,\n              17.58643052828743\n            ]\n          ]\n        ]\n      }\n    }\n  ]\n}","volume":"306","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505a76a7e4b0c8380cd78239","contributors":{"authors":[{"text":"Rogers, C.S. 0000-0001-9056-6961","orcid":"https://orcid.org/0000-0001-9056-6961","contributorId":37274,"corporation":false,"usgs":true,"family":"Rogers","given":"C.S.","affiliations":[],"preferred":false,"id":428955,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Miller, J.","contributorId":16939,"corporation":false,"usgs":true,"family":"Miller","given":"J.","affiliations":[],"preferred":false,"id":428954,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}}
,{"id":70188286,"text":"70188286 - 2006 - Tracermodel1- Excel workbook for calculation and presentation of environmental tracer data for simple groundwater mixtures: Use of chlorofluorocarbons in hydrology - a guidebook; Section III.10.3","interactions":[],"lastModifiedDate":"2017-06-05T13:56:15","indexId":"70188286","displayToPublicDate":"2006-01-01T00:00:00","publicationYear":"2006","noYear":false,"publicationType":{"id":18,"text":"Report"},"publicationSubtype":{"id":9,"text":"Other Report"},"title":"Tracermodel1- Excel workbook for calculation and presentation of environmental tracer data for simple groundwater mixtures: Use of chlorofluorocarbons in hydrology - a guidebook; Section III.10.3","docAbstract":"<p>Atmospheric environmental tracers commonly used to date groundwater on timescales of years to decades include CFC-11, CFC-12, CFC-113, SF6, 85Kr, 3 H and 3 H/3 H0 , where 3 H0 refers to initial tritium (3 H + tritiogenic 3 He) (Cook and Herczeg, 2000). Interpretation of age from environmental tracer data may be relatively simple for a water sample with a single age, but the interpretation is more complex for a sample that is a mixture of waters of varying ages. A mixture can be a natural result of convergence of flow lines to a discharge area such as a spring or stream, or it can be an artefact of sampling a long-screen well. TRACERMODEL1 contains a worksheet that can be used to determine hypothetical concentrations of atmospheric environmental tracers in water samples with several different age distributions. It is designed to permit plotting of ages and tracer concentrations in a variety of different combinations to facilitate interpretation of measurements. TRACERMODEL1 includes several different types of graphs that are linked to the calculations. The spreadsheet and accompanying graphs can be modified for specific applications. For example, the selection of atmospheric environmental tracers can be changed to reflect analytes of interest, the input tracer data can be modified to reflect local conditions or different timescales, and the analytes of interest can include other types of non-point-source contaminants, such as nitrate (Böhlke, 2002). Previous versions of this workbook have been used to evaluate field data in studies of groundwater residence time and agricultural contamination (Böhlke and Denver, 1995; Focazio et al., 1998; Katz et al., 1999; Katz et al., 2001; Plummer et al., 2001; Böhlke and Krantz, 2003; Lindsey et al., 2003). </p>","language":"English","publisher":"International Atomic Energy Agency","usgsCitation":"Bohlke, J., 2006, Tracermodel1- Excel workbook for calculation and presentation of environmental tracer data for simple groundwater mixtures: Use of chlorofluorocarbons in hydrology - a guidebook; Section III.10.3, 5 p.","productDescription":"5 p.","startPage":"239","endPage":"243","costCenters":[{"id":436,"text":"National Research Program - Eastern Branch","active":true,"usgs":true}],"links":[{"id":342110,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"},{"id":342109,"rank":1,"type":{"id":11,"text":"Document"},"url":"https://www-pub.iaea.org/MTCD/publications/PDF/Pub1238_web.pdf"}],"noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"59366daee4b0f6c2d0d7d64e","contributors":{"authors":[{"text":"Bohlke, J.K. 0000-0001-5693-6455 jkbohlke@usgs.gov","orcid":"https://orcid.org/0000-0001-5693-6455","contributorId":191103,"corporation":false,"usgs":true,"family":"Bohlke","given":"J.K.","email":"jkbohlke@usgs.gov","affiliations":[{"id":36183,"text":"Hydro-Ecological Interactions Branch","active":true,"usgs":true},{"id":436,"text":"National Research Program - Eastern Branch","active":true,"usgs":true},{"id":37277,"text":"WMA - Earth System Processes Division","active":true,"usgs":true}],"preferred":true,"id":697131,"contributorType":{"id":1,"text":"Authors"},"rank":1}]}}
,{"id":70030667,"text":"70030667 - 2006 - Invasion in a diversity hotspot: Exotic cover and native richness in the Californian serpentine flora","interactions":[],"lastModifiedDate":"2019-10-25T06:31:13","indexId":"70030667","displayToPublicDate":"2006-01-01T00:00:00","publicationYear":"2006","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1465,"text":"Ecology","active":true,"publicationSubtype":{"id":10}},"title":"Invasion in a diversity hotspot: Exotic cover and native richness in the Californian serpentine flora","docAbstract":"Exotic species have been observed to be more prevalent in sites where the richness of native species is highest, possibly reflecting variation among sites in resources, propagule supply, heterogeneity, or disturbance. However, such a pattern leaves unclear whether natives at species-rich sites are subject to especially severe impacts from exotics as a result. We considered this question using path models in which relationships between exotic cover and native richness were evaluated in the presence of correlated environmental factors. At 109 sites on serpentine soils across California, USA, exotic cover was positively correlated with total native herbaceous richness and was negatively correlated with the richness of both serpentine-endemic and rare native herbs. However, in path models that accounted for the influences of soil chemistry, disturbance, overstory cover, and regional rainfall and elevation, we found no indication that exotic cover reduced any component of native herb richness. Rather, our results indicated similarities and differences in the conditions favoring exotic, native, endemic, and rare species. Our results suggest that, in spite of some localized impacts, exotic species are not exerting a detectable overall effect on the community richness of the unique native flora of Californian serpentine. ?? 2006 by the Ecological Society of America.","language":"English","publisher":"Wiley","doi":"10.1890/05-0778","issn":"00129658","usgsCitation":"Harrison, S., Grace, J., Davies, K., Safford, H., and Viers, J., 2006, Invasion in a diversity hotspot: Exotic cover and native richness in the Californian serpentine flora: Ecology, v. 87, no. 3, p. 695-703, https://doi.org/10.1890/05-0778.","productDescription":"9 p.","startPage":"695","endPage":"703","numberOfPages":"9","costCenters":[{"id":455,"text":"National Wetlands Research Center","active":true,"usgs":true}],"links":[{"id":239287,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"United States","state":"California","geographicExtents":"{\n  \"type\": 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S.","contributorId":76129,"corporation":false,"usgs":true,"family":"Harrison","given":"S.","affiliations":[],"preferred":false,"id":428131,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Grace, J.B. 0000-0001-6374-4726","orcid":"https://orcid.org/0000-0001-6374-4726","contributorId":38938,"corporation":false,"usgs":true,"family":"Grace","given":"J.B.","affiliations":[],"preferred":false,"id":428128,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Davies, K.F.","contributorId":72586,"corporation":false,"usgs":true,"family":"Davies","given":"K.F.","email":"","affiliations":[],"preferred":false,"id":428130,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Safford, H.D.","contributorId":22293,"corporation":false,"usgs":true,"family":"Safford","given":"H.D.","email":"","affiliations":[],"preferred":false,"id":428127,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Viers, J.H.","contributorId":46305,"corporation":false,"usgs":true,"family":"Viers","given":"J.H.","affiliations":[],"preferred":false,"id":428129,"contributorType":{"id":1,"text":"Authors"},"rank":5}]}}
,{"id":70030554,"text":"70030554 - 2006 - Groundlayer vegetation gradients across oak woodland canopy gaps","interactions":[],"lastModifiedDate":"2016-05-09T10:02:21","indexId":"70030554","displayToPublicDate":"2006-01-01T00:00:00","publicationYear":"2006","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2571,"text":"Journal of the Torrey Botanical Society","active":true,"publicationSubtype":{"id":10}},"title":"Groundlayer vegetation gradients across oak woodland canopy gaps","docAbstract":"<p><span>Frequency of groundlayer plants was measured across oak woodland canopy gaps at three sites in northwest Indiana to examine how vegetation varied with gap size, direction along the gap edge, and microhabitat. Microhabitats were defined as under the canopy adjacent to the gap, along the gap edge, and within the gap. Gap-sites consisted of gaps plus adjacent tree canopy. Gaps were classified as small (16 &plusmn; 1 m</span><sup>2</sup><span>), medium (97 &plusmn; 8), and large (310 &plusmn; 32). Neither richness nor diversity differed among microhabitats, gap sizes, or edges. Similarity between microhabitats wthin a gap-site increased as the distance between plots decreased and as the difference in PAR decreased, the latter explaining twice the variation in percent dissimilarity compared to Mg concentration, A horizon depth, and litter cover.&nbsp;</span><i>Diervilla lonicera</i><span>,&nbsp;</span><i>Frageria virginiana</i><span>,&nbsp;</span><i>Helianthus divaricatus</i><span>,&nbsp;</span><i>Polygonatum pubescens</i><span>,&nbsp;</span><i>Quercus velutina</i><span>,&nbsp;</span><i>Smilacena stellata</i><span>, and&nbsp;</span><i>Tradescantia ohiensis</i><span>&nbsp;decreased, while</span><i>Tephrosia virginiana</i><span>&nbsp;and legumes increased in frequency, from canopy to gap, and C</span><sub>4</sub><span>&nbsp;grasses peaked at the gap edge, independent of gap size. Additional species frequency varied across the microhabitat gradient within specific sites.&nbsp;</span><i>Sorghastrum nutans</i><span>&nbsp;was three times more frequent in gaps at large sites than elsewhere. The vegetation in medium-sized gap-sites was more variable than within small and large gap-sites, suggesting greater environmental heterogeneity at that scale. Within gap-sites, vegetation was more heterogeneous within edges and canopies than in gaps. Edges were more similar in composition to gaps than to canopy groundlayer within gap-sites. Few species varied significantly in frequency around the gap edge. The oak woodland groundlayer on sandy substrates can be characterized as a mosaic of forb dominated vegetation that varies across light gradients associated with canopy gaps, transitioning to islands of grassland vegetation when gaps exceed 160 m</span><sup>2</sup><span>.</span></p>","language":"English","publisher":"Torrey Botanical Society","doi":"10.3159/1095-5674(2006)133[225:GVGAOW]2.0.CO;2","issn":"10955674","usgsCitation":"Pavlovic, N., Grundel, R., and Sluis, W., 2006, Groundlayer vegetation gradients across oak woodland canopy gaps: Journal of the Torrey Botanical Society, v. 133, no. 2, p. 225-239, https://doi.org/10.3159/1095-5674(2006)133[225:GVGAOW]2.0.CO;2.","productDescription":"5 p.","startPage":"225","endPage":"239","onlineOnly":"N","additionalOnlineFiles":"N","costCenters":[{"id":324,"text":"Great Lakes Science Center","active":true,"usgs":true}],"links":[{"id":239211,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"},{"id":211841,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.3159/1095-5674(2006)133[225:GVGAOW]2.0.CO;2"}],"volume":"133","issue":"2","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505a2d8ae4b0c8380cd5bf1b","contributors":{"authors":[{"text":"Pavlovic, N.B.","contributorId":105076,"corporation":false,"usgs":true,"family":"Pavlovic","given":"N.B.","email":"","affiliations":[],"preferred":false,"id":427626,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Grundel, R.","contributorId":37110,"corporation":false,"usgs":true,"family":"Grundel","given":"R.","affiliations":[],"preferred":false,"id":427624,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Sluis, W.","contributorId":98110,"corporation":false,"usgs":true,"family":"Sluis","given":"W.","email":"","affiliations":[],"preferred":false,"id":427625,"contributorType":{"id":1,"text":"Authors"},"rank":3}]}}
,{"id":70030754,"text":"70030754 - 2006 - Trend analysis of time-series phenology of North America derived from satellite data","interactions":[],"lastModifiedDate":"2012-03-12T17:21:02","indexId":"70030754","displayToPublicDate":"2006-01-01T00:00:00","publicationYear":"2006","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1722,"text":"GIScience and Remote Sensing","active":true,"publicationSubtype":{"id":10}},"title":"Trend analysis of time-series phenology of North America derived from satellite data","docAbstract":"Remote sensing information has been used in studies of the seasonal dynamics (phenology) of the land surface since the 1980s. While our understanding of remote sensing phenology is still in development, it is regarded as a key to understanding land-surface processes over large areas. Phenologic metrics, including start of season, end of season, duration of season, and seasonally integrated greenness, were derived from 8 km advanced very high resolution radiometer (AVHRR) data over North America spanning the years 1982-2003. Trend analysis was performed on annual summaries of the metrics to determine areas with increasing or decreasing growing season trends for the time period under study. Results show a trend toward earlier starts of season in limited areas of the mixed boreal forest, and a trend toward later end of season in well-defined areas of New England and southeastern Canada. Results in Saskatchewan, Canada, include a trend toward longer duration of season over a well-defined area, principally as a result of regional changes in land use practices. Changing seasonality appears to be an integrated response to a complex of factors, including climate change, but also, in many places, changes in land use practices. Copyright ?? 2006 by V. H. Winston & Son, Inc. All rights reserved.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"GIScience and Remote Sensing","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","issn":"15481603","usgsCitation":"Reed, B., 2006, Trend analysis of time-series phenology of North America derived from satellite data: GIScience and Remote Sensing, v. 43, no. 1, p. 24-38.","startPage":"24","endPage":"38","numberOfPages":"15","costCenters":[],"links":[{"id":239024,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"43","issue":"1","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505bb7cae4b08c986b3274a9","contributors":{"authors":[{"text":"Reed, B. C. 0000-0002-1132-7178","orcid":"https://orcid.org/0000-0002-1132-7178","contributorId":55594,"corporation":false,"usgs":true,"family":"Reed","given":"B. C.","affiliations":[{"id":595,"text":"U.S. Geological Survey","active":false,"usgs":true}],"preferred":false,"id":428530,"contributorType":{"id":1,"text":"Authors"},"rank":1}]}}
,{"id":70030697,"text":"70030697 - 2006 - Isotopic evidence of nitrate sources and denitrification in the Mississippi River, Illinois","interactions":[],"lastModifiedDate":"2012-03-12T17:21:01","indexId":"70030697","displayToPublicDate":"2006-01-01T00:00:00","publicationYear":"2006","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2262,"text":"Journal of Environmental Quality","active":true,"publicationSubtype":{"id":10}},"title":"Isotopic evidence of nitrate sources and denitrification in the Mississippi River, Illinois","docAbstract":"Anthropogenic nitrate (NO3-) within the Mississippi-Atchafalaya River basin and discharge to the Gulf of Mexico has been linked to serious environmental problems. The sources of this NO 3- have been estimated by others using mass balance methods; however, there is considerable uncertainty in these estimates. Part of the uncertainty is the degree of denitrification that the NO3- has undergone. The isotopic composition of NO3- in the Mississippi River adjacent to Illinois and tile drain (subsurface drain) discharge in agricultural areas of east-central Illinois was examined using N and O isotopes to help identify the major sources of NO 3- and assess the degree of denitrification in the samples. The isotopic evidence suggests that most of the NO3- in the river is primarily derived from synthetic fertilizers and soil organic N, which is consistent with published estimates of N inputs to the Mississippi River. The 1:2 relationship between ??18O and ??15N also indicate that, depending on sample location and season, NO3- in the river and tile drains lias undergone significant denitrification, ranging from about 0 to 55%. The majority of the denitrification appears to have occurred before discharge into the Mississippi River. ?? ASA, CSSA, SSSA.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Journal of Environmental Quality","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","doi":"10.2134/jeq2005.0012","issn":"00472425","usgsCitation":"Panno, S., Hackley, K.C., Kelly, W., and Hwang, H., 2006, Isotopic evidence of nitrate sources and denitrification in the Mississippi River, Illinois: Journal of Environmental Quality, v. 35, no. 2, p. 495-504, https://doi.org/10.2134/jeq2005.0012.","startPage":"495","endPage":"504","numberOfPages":"10","costCenters":[],"links":[{"id":211796,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.2134/jeq2005.0012"},{"id":239152,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"35","issue":"2","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505a3fb3e4b0c8380cd64745","contributors":{"authors":[{"text":"Panno, S.V.","contributorId":102990,"corporation":false,"usgs":true,"family":"Panno","given":"S.V.","email":"","affiliations":[],"preferred":false,"id":428248,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Hackley, Keith C.","contributorId":12166,"corporation":false,"usgs":true,"family":"Hackley","given":"Keith","email":"","middleInitial":"C.","affiliations":[],"preferred":false,"id":428246,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Kelly, W.R.","contributorId":74120,"corporation":false,"usgs":true,"family":"Kelly","given":"W.R.","email":"","affiliations":[],"preferred":false,"id":428247,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Hwang, H.-H.","contributorId":6981,"corporation":false,"usgs":true,"family":"Hwang","given":"H.-H.","email":"","affiliations":[],"preferred":false,"id":428245,"contributorType":{"id":1,"text":"Authors"},"rank":4}]}}
]}