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,{"id":70029940,"text":"70029940 - 2007 - Ambiguous taxa: Effects on the characterization and interpretation of invertebrate assemblages","interactions":[],"lastModifiedDate":"2016-11-30T10:46:33","indexId":"70029940","displayToPublicDate":"2007-01-01T00:00:00","publicationYear":"2007","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2564,"text":"Journal of the North American Benthological Society","onlineIssn":"1937-237X","printIssn":"0887-3593","active":true,"publicationSubtype":{"id":10}},"title":"Ambiguous taxa: Effects on the characterization and interpretation of invertebrate assemblages","docAbstract":"<p>Damaged and immature specimens often result in macroinvertebrate data that contain ambiguous parent-child pairs (i.e., abundances associated with multiple related levels of the taxonomic hierarchy such as Baetis pluto and the associated ambiguous parent Baetis sp.). The choice of method used to resolve ambiguous parent-child pairs may have a very large effect on the characterization of invertebrate assemblages and the interpretation of responses to environmental change because very large proportions of taxa richness (73-78%) and abundance (79-91%) can be associated with ambiguous parents. To address this issue, we examined 16 variations of 4 basic methods for resolving ambiguous taxa: RPKC (remove parent, keep child), MCWP (merge child with parent), RPMC (remove parent or merge child with parent depending on their abundances), and DPAC (distribute parents among children). The choice of method strongly affected assemblage structure, assemblage characteristics (e.g., metrics), and the ability to detect responses along environmental (urbanization) gradients. All methods except MCWP produced acceptable results when used consistently within a study. However, the assemblage characteristics (e.g., values of assemblage metrics) differed widely depending on the method used, and data should not be combined unless the methods used to resolve ambiguous taxa are well documented and are known to be comparable. The suitability of the methods was evaluated and compared on the basis of 13 criteria that considered conservation of taxa richness and abundance, consistency among samples, methods, and studies, and effects on the interpretation of the data. Methods RPMC and DPAC had the highest suitability scores regardless of whether ambiguous taxa were resolved for each sample separately or for a group of samples. Method MCWP gave consistently poor results. Methods MCWP and DPAC approximate the use of family-level identifications and operational taxonomic units (OTU), respectively. Our results suggest that restricting identifications to the family level is not a good method of resolving ambiguous taxa, whereas generating OTUs works well provided that documentation issues are addressed. ?? 2007 by The North American Benthological Society.</p>","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Journal of the North American Benthological Society","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","doi":"10.1899/0887-3593(2007)26[286:ATEOTC]2.0.CO;2","issn":"08873593","usgsCitation":"Cuffney, T., Bilger, M.D., and Haigler, A., 2007, Ambiguous taxa: Effects on the characterization and interpretation of invertebrate assemblages: Journal of the North American Benthological Society, v. 26, no. 2, p. 286-307, https://doi.org/10.1899/0887-3593(2007)26[286:ATEOTC]2.0.CO;2.","startPage":"286","endPage":"307","numberOfPages":"22","onlineOnly":"N","additionalOnlineFiles":"N","costCenters":[{"id":476,"text":"North Carolina Water Science Center","active":true,"usgs":true}],"links":[{"id":477279,"rank":10000,"type":{"id":41,"text":"Open Access External Repository Page"},"url":"http://www.bioone.org/doi/10.1899/0887-3593%282007%2926%5B286%3AATEOTC%5D2.0.CO%3B2","text":"External Repository"},{"id":240357,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"},{"id":212813,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1899/0887-3593(2007)26[286:ATEOTC]2.0.CO;2"}],"volume":"26","issue":"2","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"5059e9afe4b0c8380cd483ac","contributors":{"authors":[{"text":"Cuffney, T. F.","contributorId":108134,"corporation":false,"usgs":true,"family":"Cuffney","given":"T. F.","affiliations":[],"preferred":false,"id":424991,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Bilger, Michael D.","contributorId":14861,"corporation":false,"usgs":true,"family":"Bilger","given":"Michael","email":"","middleInitial":"D.","affiliations":[],"preferred":false,"id":424989,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Haigler, A.M.","contributorId":45119,"corporation":false,"usgs":true,"family":"Haigler","given":"A.M.","email":"","affiliations":[],"preferred":false,"id":424990,"contributorType":{"id":1,"text":"Authors"},"rank":3}]}}
,{"id":70029941,"text":"70029941 - 2007 - Mars reconnaissance orbiter's high resolution imaging science experiment (HiRISE)","interactions":[],"lastModifiedDate":"2018-12-07T16:19:37","indexId":"70029941","displayToPublicDate":"2007-01-01T00:00:00","publicationYear":"2007","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2317,"text":"Journal of Geophysical Research E: Planets","active":true,"publicationSubtype":{"id":10}},"title":"Mars reconnaissance orbiter's high resolution imaging science experiment (HiRISE)","docAbstract":"<p><span>The HiRISE camera features a 0.5 m diameter primary mirror, 12 m effective focal length, and a focal plane system that can acquire images containing up to 28 Gb (gigabits) of data in as little as 6 seconds. HiRISE will provide detailed images (0.25 to 1.3 m/pixel) covering ∼1% of the Martian surface during the 2‐year Primary Science Phase (PSP) beginning November 2006. Most images will include color data covering 20% of the potential field of view. A top priority is to acquire ∼1000 stereo pairs and apply precision geometric corrections to enable topographic measurements to better than 25 cm vertical precision. We expect to return more than 12 Tb of HiRISE data during the 2‐year PSP, and use pixel binning, conversion from 14 to 8 bit values, and a lossless compression system to increase coverage. HiRISE images are acquired via 14 CCD detectors, each with 2 output channels, and with multiple choices for pixel binning and number of Time Delay and Integration lines. HiRISE will support Mars exploration by locating and characterizing past, present, and future landing sites, unsuccessful landing sites, and past and potentially future rover traverses. We will investigate cratering, volcanism, tectonism, hydrology, sedimentary processes, stratigraphy, aeolian processes, mass wasting, landscape evolution, seasonal processes, climate change, spectrophotometry, glacial and periglacial processes, polar geology, and regolith properties. An Internet Web site (HiWeb) will enable anyone in the world to suggest HiRISE targets on Mars and to easily locate, view, and download HiRISE data products.</span></p>","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Journal of Geophysical Research E: Planets","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","publisher":"American Geophysical Union","publisherLocation":"Washington, D.C.","doi":"10.1029/2005JE002605","issn":"01480227","usgsCitation":"McEwen, A.S., Eliason, E.M., Bergstrom, J.W., Bridges, N.T., Hansen, C.J., Delamere, W.A., Grant, J.A., Gulick, V.C., Herkenhoff, K.E., Keszthelyi, L., Kirk, R.L., Mellon, M.T., Squyres, S.W., Thomas, N., and Weitz, C.M., 2007, Mars reconnaissance orbiter's high resolution imaging science experiment (HiRISE): Journal of Geophysical Research E: Planets, v. 112, no. 5, 16 p., https://doi.org/10.1029/2005JE002605.","productDescription":"16 p.","costCenters":[{"id":131,"text":"Astrogeology Science Center","active":true,"usgs":true}],"links":[{"id":477064,"rank":1,"type":{"id":41,"text":"Open Access External Repository Page"},"url":"https://boris.unibe.ch/25369/","text":"External Repository"},{"id":240358,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"otherGeospatial":"Mars","volume":"112","issue":"5","noUsgsAuthors":false,"publicationDate":"2007-05-17","publicationStatus":"PW","scienceBaseUri":"505a5225e4b0c8380cd6c1b6","contributors":{"authors":[{"text":"McEwen, Alfred S.","contributorId":61657,"corporation":false,"usgs":false,"family":"McEwen","given":"Alfred","email":"","middleInitial":"S.","affiliations":[{"id":7042,"text":"University of Arizona","active":true,"usgs":false}],"preferred":false,"id":424993,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Eliason, Eric M.","contributorId":21280,"corporation":false,"usgs":true,"family":"Eliason","given":"Eric","email":"","middleInitial":"M.","affiliations":[],"preferred":false,"id":425005,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Bergstrom, James W.","contributorId":210510,"corporation":false,"usgs":false,"family":"Bergstrom","given":"James","email":"","middleInitial":"W.","affiliations":[{"id":6944,"text":"Ball Aerospace Technologies Corporation","active":true,"usgs":false}],"preferred":false,"id":424997,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Bridges, Nathan T.","contributorId":45005,"corporation":false,"usgs":true,"family":"Bridges","given":"Nathan","email":"","middleInitial":"T.","affiliations":[],"preferred":false,"id":424994,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Hansen, Candice J.","contributorId":70235,"corporation":false,"usgs":false,"family":"Hansen","given":"Candice","email":"","middleInitial":"J.","affiliations":[],"preferred":false,"id":425003,"contributorType":{"id":1,"text":"Authors"},"rank":5},{"text":"Delamere, W. Alan","contributorId":15042,"corporation":false,"usgs":true,"family":"Delamere","given":"W.","email":"","middleInitial":"Alan","affiliations":[],"preferred":false,"id":425000,"contributorType":{"id":1,"text":"Authors"},"rank":6},{"text":"Grant, John A.","contributorId":35230,"corporation":false,"usgs":true,"family":"Grant","given":"John","email":"","middleInitial":"A.","affiliations":[],"preferred":false,"id":424995,"contributorType":{"id":1,"text":"Authors"},"rank":7},{"text":"Gulick, Virginia C.","contributorId":52443,"corporation":false,"usgs":true,"family":"Gulick","given":"Virginia","email":"","middleInitial":"C.","affiliations":[],"preferred":false,"id":424999,"contributorType":{"id":1,"text":"Authors"},"rank":8},{"text":"Herkenhoff, Kenneth E. 0000-0002-3153-6663 kherkenhoff@usgs.gov","orcid":"https://orcid.org/0000-0002-3153-6663","contributorId":2275,"corporation":false,"usgs":true,"family":"Herkenhoff","given":"Kenneth","email":"kherkenhoff@usgs.gov","middleInitial":"E.","affiliations":[{"id":131,"text":"Astrogeology Science Center","active":true,"usgs":true}],"preferred":true,"id":425001,"contributorType":{"id":1,"text":"Authors"},"rank":9},{"text":"Keszthelyi, Laszlo P. 0000-0003-1879-4331 laz@usgs.gov","orcid":"https://orcid.org/0000-0003-1879-4331","contributorId":52802,"corporation":false,"usgs":true,"family":"Keszthelyi","given":"Laszlo P.","email":"laz@usgs.gov","affiliations":[{"id":131,"text":"Astrogeology Science Center","active":true,"usgs":true}],"preferred":true,"id":424998,"contributorType":{"id":1,"text":"Authors"},"rank":10},{"text":"Kirk, Randolph L. 0000-0003-0842-9226 rkirk@usgs.gov","orcid":"https://orcid.org/0000-0003-0842-9226","contributorId":2765,"corporation":false,"usgs":true,"family":"Kirk","given":"Randolph","email":"rkirk@usgs.gov","middleInitial":"L.","affiliations":[{"id":131,"text":"Astrogeology Science Center","active":true,"usgs":true}],"preferred":true,"id":425006,"contributorType":{"id":1,"text":"Authors"},"rank":11},{"text":"Mellon, Michael T.","contributorId":8603,"corporation":false,"usgs":false,"family":"Mellon","given":"Michael","email":"","middleInitial":"T.","affiliations":[{"id":7037,"text":"Southwest Research Institute, Boulder, Colorado","active":true,"usgs":false}],"preferred":false,"id":425004,"contributorType":{"id":1,"text":"Authors"},"rank":12},{"text":"Squyres, Steven W.","contributorId":10537,"corporation":false,"usgs":true,"family":"Squyres","given":"Steven","email":"","middleInitial":"W.","affiliations":[],"preferred":false,"id":424996,"contributorType":{"id":1,"text":"Authors"},"rank":13},{"text":"Thomas, Nicolas","contributorId":203694,"corporation":false,"usgs":false,"family":"Thomas","given":"Nicolas","email":"","affiliations":[{"id":25430,"text":"University of Bern","active":true,"usgs":false}],"preferred":false,"id":425002,"contributorType":{"id":1,"text":"Authors"},"rank":14},{"text":"Weitz, Catherine M.","contributorId":210511,"corporation":false,"usgs":false,"family":"Weitz","given":"Catherine","email":"","middleInitial":"M.","affiliations":[{"id":13179,"text":"Planetary Science Institute","active":true,"usgs":false}],"preferred":true,"id":424992,"contributorType":{"id":1,"text":"Authors"},"rank":15}]}}
,{"id":70029950,"text":"70029950 - 2007 - Species-area curves indicate the importance of habitats' contributions to regional biodiversity","interactions":[],"lastModifiedDate":"2019-11-12T06:04:59","indexId":"70029950","displayToPublicDate":"2007-01-01T00:00:00","publicationYear":"2007","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1456,"text":"Ecological Indicators","active":true,"publicationSubtype":{"id":10}},"title":"Species-area curves indicate the importance of habitats' contributions to regional biodiversity","docAbstract":"<p>We examined species-area curves, species composition and similarity (Jaccard's coefficients), and species richness in 17 vegetation types to develop a composite index of a vegetation type's contribution to regional species richness. We collected data from 1 to 1000 m2 scales in 147 nested plots in Rocky Mountain National Park, Colorado, USA to compare three species-area curve models' abilities to estimate the number of species observed in each vegetation type. The log(species)-log(area) curve had the largest adjusted coefficients of determination (r2 values) in 12 of the 17 types, followed by the species-log(area) curve with five of the highest values. When the slopes of the curves were corrected for species overlap among plots with Jaccard's coefficients, the species-log(area) curves estimated values closest to those observed. We combined information from species-area curves and measures of heterogeneity with information on the area covered by each vegetation type and found that the types making the greatest contributions to regional biodiversity covered the smallest areas. This approach may provide an accurate and relatively rapid way to rank hotspots of plant diversity within regions of interest.</p>","language":"English","publisher":"Elsevier Applied Science","doi":"10.1016/j.ecolind.2006.03.002","issn":"1470160X","usgsCitation":"Chong, G., and Stohlgren, T., 2007, Species-area curves indicate the importance of habitats' contributions to regional biodiversity: Ecological Indicators, v. 7, no. 2, p. 387-395, https://doi.org/10.1016/j.ecolind.2006.03.002.","productDescription":"9 p.","startPage":"387","endPage":"395","numberOfPages":"9","onlineOnly":"N","additionalOnlineFiles":"N","costCenters":[{"id":481,"text":"Northern Rocky Mountain Science Center","active":true,"usgs":true}],"links":[{"id":240528,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"},{"id":212957,"rank":9999,"type":{"id":10,"text":"Digital Object 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,{"id":70029954,"text":"70029954 - 2007 - An evaluation of freshwater mussel toxicity data in the derivation of water quality guidance and standards for copper","interactions":[],"lastModifiedDate":"2016-06-01T15:47:08","indexId":"70029954","displayToPublicDate":"2007-01-01T00:00:00","publicationYear":"2007","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1571,"text":"Environmental Toxicology and Chemistry","active":true,"publicationSubtype":{"id":10}},"title":"An evaluation of freshwater mussel toxicity data in the derivation of water quality guidance and standards for copper","docAbstract":"<p>The state of Oklahoma has designated several areas as freshwater mussel sanctuaries in an attempt to provide freshwater mussel species a degree of protection and to facilitate their reproduction. We evaluated the protection afforded freshwater mussels by the U.S. Environmental Protection Agency (U.S. EPA) hardness-based 1996 ambient copper water quality criteria, the 2007 U.S. EPA water quality criteria based on the biotic ligand model and the 2005 state of Oklahoma copper water quality standards. Both the criterion maximum concentration and criterion continuous concentration were evaluated. Published acute and chronic copper toxicity data that met American Society for Testing and Materials guidance for test acceptability were obtained for exposures conducted with glochidia or juvenile freshwater mussels. We tabulated toxicity data for glochidia and juveniles to calculate 20 species mean acute values for freshwater mussels. Generally, freshwater mussel species mean acute values were similar to those of the more sensitive species included in the U.S. EPA water quality derivation database. When added to the database of genus mean acute values used in deriving 1996 copper water quality criteria, 14 freshwater mussel genus mean acute values included 10 of the lowest 15 genus mean acute values, with three mussel species having the lowest values. Chronic exposure and sublethal effects freshwater mussel data available for four species and acute to chronic ratios were used to evaluate the criterion continuous concentration. On the basis of the freshwater mussel toxicity data used in this assessment, the hardness-based 1996 U.S. EPA water quality criteria, the 2005 Oklahoma water quality standards, and the 2007 U.S. EPA water quality criteria based on the biotic ligand model might need to be revised to afford protection to freshwater mussels. ?? 2007 SETAC.</p>","language":"English","publisher":"Wiley","doi":"10.1897/06-560R.1","issn":"07307268","usgsCitation":"March, F., Dwyer, F., Augspurger, T., Ingersoll, C., Wang, N., and Mebane, C., 2007, An evaluation of freshwater mussel toxicity data in the derivation of water quality guidance and standards for copper: Environmental Toxicology and Chemistry, v. 26, no. 10, p. 2066-2074, https://doi.org/10.1897/06-560R.1.","productDescription":"9 p.","startPage":"2066","endPage":"2074","onlineOnly":"N","additionalOnlineFiles":"N","costCenters":[{"id":192,"text":"Columbia Environmental Research Center","active":true,"usgs":true}],"links":[{"id":240589,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"},{"id":213009,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1897/06-560R.1"}],"volume":"26","issue":"10","noUsgsAuthors":false,"publicationDate":"2007-10-01","publicationStatus":"PW","scienceBaseUri":"5059ea4be4b0c8380cd48771","contributors":{"authors":[{"text":"March, F.A.","contributorId":64031,"corporation":false,"usgs":true,"family":"March","given":"F.A.","email":"","affiliations":[],"preferred":false,"id":425051,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Dwyer, F.J.","contributorId":107818,"corporation":false,"usgs":true,"family":"Dwyer","given":"F.J.","email":"","affiliations":[],"preferred":false,"id":425055,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Augspurger, T.","contributorId":81844,"corporation":false,"usgs":false,"family":"Augspurger","given":"T.","email":"","affiliations":[],"preferred":false,"id":425053,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Ingersoll, C.G. 0000-0003-4531-5949","orcid":"https://orcid.org/0000-0003-4531-5949","contributorId":56338,"corporation":false,"usgs":true,"family":"Ingersoll","given":"C.G.","affiliations":[],"preferred":false,"id":425050,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Wang, N.","contributorId":81615,"corporation":false,"usgs":true,"family":"Wang","given":"N.","email":"","affiliations":[],"preferred":false,"id":425052,"contributorType":{"id":1,"text":"Authors"},"rank":5},{"text":"Mebane, C.A.","contributorId":84134,"corporation":false,"usgs":true,"family":"Mebane","given":"C.A.","email":"","affiliations":[],"preferred":false,"id":425054,"contributorType":{"id":1,"text":"Authors"},"rank":6}]}}
,{"id":70029955,"text":"70029955 - 2007 - Late Quaternary paleoenvironments of an ephemeral wetland in North Dakota, USA: Relative interactions of ground-water hydrology and climate change","interactions":[],"lastModifiedDate":"2012-03-12T17:21:06","indexId":"70029955","displayToPublicDate":"2007-01-01T00:00:00","publicationYear":"2007","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2411,"text":"Journal of Paleolimnology","active":true,"publicationSubtype":{"id":10}},"title":"Late Quaternary paleoenvironments of an ephemeral wetland in North Dakota, USA: Relative interactions of ground-water hydrology and climate change","docAbstract":"This study of fossils (pollen, plant macrofossils, stomata and fish) and sediments (lithostratigraphy and geochemistry) from the Wendel site in North Dakota, USA, emphasizes the importance of considering ground-water hydrology when deciphering paleoclimate signals from lakes in postglacial landscapes. The Wendel site was a paleolake from about 11,500 14C yr BP to 11,100 14C yr BP. Afterwards, the lake-level lowered until it became a prairie marsh by 9,300 14C yr BP and finally, at 8,500 14C yr BP, an ephemeral wetland as it is today. Meanwhile, the vegetation changed from a white spruce parkland (11,500 to 10,500 14C yr BP) to deciduous parkland, followed by grassland at 9,300 14C yr BP. The pattern and timing of these aquatic and terrestrial changes are similar to coeval kettle lake records from adjacent uplands, providing a regional aridity signal. However, two local sources of ground water were identified from the fossil and geochemical data, which mediated atmospheric inputs to the Wendel basin. First, the paleolake received water from the melting of stagnant ice buried under local till for about 900 years after glacier recession. Later, Holocene droughts probably caused the lower-elevation Wendel site to capture the ground water of up-gradient lakes. ?? 2007 Springer Science+Business Media, Inc.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Journal of Paleolimnology","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","doi":"10.1007/s10933-006-9079-5","issn":"09212728","usgsCitation":"Yansa, C., Dean, W., and Murphy, E., 2007, Late Quaternary paleoenvironments of an ephemeral wetland in North Dakota, USA: Relative interactions of ground-water hydrology and climate change: Journal of Paleolimnology, v. 38, no. 3, p. 441-457, https://doi.org/10.1007/s10933-006-9079-5.","startPage":"441","endPage":"457","numberOfPages":"17","costCenters":[],"links":[{"id":213043,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1007/s10933-006-9079-5"},{"id":240623,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"38","issue":"3","noUsgsAuthors":false,"publicationDate":"2007-04-05","publicationStatus":"PW","scienceBaseUri":"505a4533e4b0c8380cd670fc","contributors":{"authors":[{"text":"Yansa, C.H.","contributorId":17406,"corporation":false,"usgs":true,"family":"Yansa","given":"C.H.","email":"","affiliations":[],"preferred":false,"id":425056,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Dean, W.E.","contributorId":97099,"corporation":false,"usgs":true,"family":"Dean","given":"W.E.","email":"","affiliations":[],"preferred":false,"id":425058,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Murphy, E.C.","contributorId":86745,"corporation":false,"usgs":true,"family":"Murphy","given":"E.C.","email":"","affiliations":[],"preferred":false,"id":425057,"contributorType":{"id":1,"text":"Authors"},"rank":3}]}}
,{"id":70029958,"text":"70029958 - 2007 - Geomorphic and sedimentologic evidence for the separation of Lake Superior from Lake Michigan and Huron","interactions":[],"lastModifiedDate":"2016-05-02T10:16:08","indexId":"70029958","displayToPublicDate":"2007-01-01T00:00:00","publicationYear":"2007","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2411,"text":"Journal of Paleolimnology","active":true,"publicationSubtype":{"id":10}},"title":"Geomorphic and sedimentologic evidence for the separation of Lake Superior from Lake Michigan and Huron","docAbstract":"<p>A common break was recognized in four Lake Superior strandplain sequences using geomorphic and sedimentologic characteristics. Strandplains were divided into lakeward and landward sets of beach ridges using aerial photographs and topographic surveys to identify similar surficial features and core data to identify similar subsurface features. Cross-strandplain, elevation-trend changes from a lowering towards the lake in the landward set of beach ridges to a rise or reduction of slope towards the lake in the lakeward set of beach ridges indicates that the break is associated with an outlet change for Lake Superior. Correlation of this break between study sites and age model results for the strandplain sequences suggest that the outlet change occurred sometime after about 2,400 calendar years ago (after the Algoma phase). Age model results from one site (Grand Traverse Bay) suggest an alternate age closer to about 1,200 calendar years ago but age models need to be investigated further. The landward part of the strandplain was deposited when water levels were common in all three upper Great Lakes basins (Superior, Huron, and Michigan) and drained through the Port Huron/Sarnia outlet. The lakeward part was deposited after the Sault outlet started to help regulate water levels in the Lake Superior basin. The landward beach ridges are commonly better defined and continuous across the embayments, more numerous, larger in relief, wider, have greater vegetation density, and intervening swales contain more standing water and peat than the lakeward set. Changes in drainage patterns, foreshore sediment thickness and grain size help in identifying the break between sets in the strandplain sequences. Investigation of these breaks may help identify possible gaps in the record or missing ridges in strandplain sequences that may not be apparent when viewing age distributions and may justify the need for multiple age and glacial isostatic adjustment models. ?? 2006 Springer Science+Business Media B.V.</p>","language":"English","publisher":"Springer","doi":"10.1007/s10933-006-9052-3","issn":"09212728","usgsCitation":"Johnston, J., Thompson, T., Wilcox, D., and Baedke, S., 2007, Geomorphic and sedimentologic evidence for the separation of Lake Superior from Lake Michigan and Huron: Journal of Paleolimnology, v. 37, no. 3, p. 349-364, https://doi.org/10.1007/s10933-006-9052-3.","productDescription":"16 p.","startPage":"349","endPage":"364","onlineOnly":"N","additionalOnlineFiles":"N","costCenters":[{"id":324,"text":"Great Lakes Science Center","active":true,"usgs":true}],"links":[{"id":476986,"rank":10000,"type":{"id":41,"text":"Open Access External Repository Page"},"url":"http://hdl.handle.net/20.500.12648/2302","text":"External Repository"},{"id":240655,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"},{"id":213070,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1007/s10933-006-9052-3"}],"volume":"37","issue":"3","noUsgsAuthors":false,"publicationDate":"2006-12-16","publicationStatus":"PW","scienceBaseUri":"505a277fe4b0c8380cd5993d","contributors":{"authors":[{"text":"Johnston, J.W.","contributorId":67260,"corporation":false,"usgs":true,"family":"Johnston","given":"J.W.","email":"","affiliations":[],"preferred":false,"id":425067,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Thompson, T.A.","contributorId":73226,"corporation":false,"usgs":true,"family":"Thompson","given":"T.A.","email":"","affiliations":[],"preferred":false,"id":425068,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Wilcox, D.A.","contributorId":55382,"corporation":false,"usgs":true,"family":"Wilcox","given":"D.A.","email":"","affiliations":[],"preferred":false,"id":425066,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Baedke, S.J.","contributorId":14585,"corporation":false,"usgs":true,"family":"Baedke","given":"S.J.","affiliations":[],"preferred":false,"id":425065,"contributorType":{"id":1,"text":"Authors"},"rank":4}]}}
,{"id":70029959,"text":"70029959 - 2007 - Multiple-species analysis of point count data: A more parsimonious modelling framework","interactions":[],"lastModifiedDate":"2012-03-12T17:21:36","indexId":"70029959","displayToPublicDate":"2007-01-01T00:00:00","publicationYear":"2007","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2163,"text":"Journal of Applied Ecology","active":true,"publicationSubtype":{"id":10}},"title":"Multiple-species analysis of point count data: A more parsimonious modelling framework","docAbstract":"1. Although population surveys often provide information on multiple species, these data are rarely analysed within a multiple-species framework despite the potential for more efficient estimation of population parameters. 2. We have developed a multiple-species modelling framework that uses similarities in capture/detection processes among species to model multiple species data more parsimoniously. We present examples of this approach applied to distance, time of detection and multiple observer sampling for avian point count data. 3. Models that included species as a covariate and individual species effects were generally selected as the best models for distance sampling, but group models without species effects performed best for the time of detection and multiple observer methods. Population estimates were more precise for no-species-effect models than for species-effect models, demonstrating the benefits of exploiting species' similarities when modelling multiple species data. Partial species-effect models and additive models were also useful because they modelled similarities among species while allowing for species differences. 4. Synthesis and applications. We recommend the adoption of multiple-species modelling because of its potential for improved population estimates. This framework will be particularly beneficial for modelling count data from rare species because information on the detection process can be 'borrowed' from more common species. The multiple-species modelling framework presented here is applicable to a wide range of sampling techniques and taxa. ?? 2007 The Authors.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Journal of Applied Ecology","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","doi":"10.1111/j.1365-2664.2006.01271.x","issn":"00218901","usgsCitation":"Alldredge, M., Pollock, K.H., Simons, T., and Shriner, S., 2007, Multiple-species analysis of point count data: A more parsimonious modelling framework: Journal of Applied Ecology, v. 44, no. 2, p. 281-290, https://doi.org/10.1111/j.1365-2664.2006.01271.x.","startPage":"281","endPage":"290","numberOfPages":"10","costCenters":[],"links":[{"id":476979,"rank":10000,"type":{"id":40,"text":"Open Access Publisher Index Page"},"url":"https://doi.org/10.1111/j.1365-2664.2006.01271.x","text":"Publisher Index Page"},{"id":213097,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1111/j.1365-2664.2006.01271.x"},{"id":240686,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"44","issue":"2","noUsgsAuthors":false,"publicationDate":"2007-02-19","publicationStatus":"PW","scienceBaseUri":"505a608fe4b0c8380cd71538","contributors":{"authors":[{"text":"Alldredge, M.W.","contributorId":50263,"corporation":false,"usgs":true,"family":"Alldredge","given":"M.W.","email":"","affiliations":[],"preferred":false,"id":425070,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Pollock, K. H.","contributorId":65184,"corporation":false,"usgs":false,"family":"Pollock","given":"K.","email":"","middleInitial":"H.","affiliations":[],"preferred":false,"id":425072,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Simons, T.R.","contributorId":56334,"corporation":false,"usgs":true,"family":"Simons","given":"T.R.","email":"","affiliations":[],"preferred":false,"id":425071,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Shriner, S.A.","contributorId":26405,"corporation":false,"usgs":true,"family":"Shriner","given":"S.A.","affiliations":[],"preferred":false,"id":425069,"contributorType":{"id":1,"text":"Authors"},"rank":4}]}}
,{"id":70029962,"text":"70029962 - 2007 - CO2 storage capacity estimation: Issues and development of standards","interactions":[],"lastModifiedDate":"2012-03-12T17:21:09","indexId":"70029962","displayToPublicDate":"2007-01-01T00:00:00","publicationYear":"2007","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2049,"text":"International Journal of Greenhouse Gas Control","active":true,"publicationSubtype":{"id":10}},"title":"CO2 storage capacity estimation: Issues and development of standards","docAbstract":"Associated with the endeavours of geoscientists to pursue the promise that geological storage of CO2 has of potentially making deep cuts into greenhouse gas emissions, Governments around the world are dependent on reliable estimates of CO2 storage capacity and insightful indications of the viability of geological storage in their respective jurisdictions. Similarly, industry needs reliable estimates for business decisions regarding site selection and development. If such estimates are unreliable, and decisions are made based on poor advice, then valuable resources and time could be wasted. Policies that have been put in place to address CO2 emissions could be jeopardised. Estimates need to clearly state the limitations that existed (data, time, knowledge) at the time of making the assessment and indicate the purpose and future use to which the estimates should be applied. A set of guidelines for estimation of storage capacity will greatly assist future deliberations by government and industry on the appropriateness of geological storage of CO2 in different geological settings and political jurisdictions. This work has been initiated under the auspices of the Carbon Sequestration Leadership Forum (www.cslforum.org), and it is intended that it will be an ongoing taskforce to further examine issues associated with storage capacity estimation. Crown Copyright ?? 2007.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"International Journal of Greenhouse Gas Control","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","doi":"10.1016/S1750-5836(07)00027-8","issn":"17505836","usgsCitation":"Bradshaw, J., Bachu, S., Bonijoly, D., Burruss, R., Holloway, S., Christensen, N., and Mathiassen, O., 2007, CO2 storage capacity estimation: Issues and development of standards: International Journal of Greenhouse Gas Control, v. 1, no. 1, p. 62-68, https://doi.org/10.1016/S1750-5836(07)00027-8.","startPage":"62","endPage":"68","numberOfPages":"7","costCenters":[],"links":[{"id":477274,"rank":10000,"type":{"id":41,"text":"Open Access External Repository Page"},"url":"http://www.sciencedirect.com/science/journal/17505836","text":"External Repository"},{"id":212662,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1016/S1750-5836(07)00027-8"},{"id":240184,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"1","issue":"1","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"5059f2d4e4b0c8380cd4b3f4","contributors":{"authors":[{"text":"Bradshaw, J.","contributorId":75758,"corporation":false,"usgs":true,"family":"Bradshaw","given":"J.","email":"","affiliations":[],"preferred":false,"id":425081,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Bachu, S.","contributorId":35124,"corporation":false,"usgs":true,"family":"Bachu","given":"S.","email":"","affiliations":[],"preferred":false,"id":425078,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Bonijoly, D.","contributorId":51985,"corporation":false,"usgs":true,"family":"Bonijoly","given":"D.","email":"","affiliations":[],"preferred":false,"id":425079,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Burruss, R.","contributorId":18178,"corporation":false,"usgs":true,"family":"Burruss","given":"R.","affiliations":[],"preferred":false,"id":425076,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Holloway, S.","contributorId":22150,"corporation":false,"usgs":true,"family":"Holloway","given":"S.","email":"","affiliations":[],"preferred":false,"id":425077,"contributorType":{"id":1,"text":"Authors"},"rank":5},{"text":"Christensen, N.P.","contributorId":70193,"corporation":false,"usgs":true,"family":"Christensen","given":"N.P.","email":"","affiliations":[],"preferred":false,"id":425080,"contributorType":{"id":1,"text":"Authors"},"rank":6},{"text":"Mathiassen, O.M.","contributorId":95275,"corporation":false,"usgs":true,"family":"Mathiassen","given":"O.M.","email":"","affiliations":[],"preferred":false,"id":425082,"contributorType":{"id":1,"text":"Authors"},"rank":7}]}}
,{"id":70029967,"text":"70029967 - 2007 - Arsenic attenuation by oxidized aquifer sediments in Bangladesh","interactions":[],"lastModifiedDate":"2023-08-02T12:26:36.475241","indexId":"70029967","displayToPublicDate":"2007-01-01T00:00:00","publicationYear":"2007","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":3352,"text":"Science of the Total Environment","active":true,"publicationSubtype":{"id":10}},"title":"Arsenic attenuation by oxidized aquifer sediments in Bangladesh","docAbstract":"<p>Recognition of arsenic (As) contamination of shallow fluvio-deltaic aquifers in the Bengal Basin has resulted in increasing exploitation of groundwater from deeper aquifers that generally contain low concentrations of dissolved As. Pumping-induced infiltration of high-As groundwater could eventually cause As concentrations in these aquifers to increase. This study investigates the adsorption capacity for As of sediment from a low-As aquifer near Dhaka, Bangladesh. A shallow, chemically-reducing aquifer at this site extends to a depth of 50&nbsp;m and has maximum As concentrations in groundwater of 900&nbsp;μg/L. At depths greater than 50&nbsp;m, geochemical conditions are more oxidizing and groundwater has &lt;&nbsp;5&nbsp;μg/L As. There is no thick layer of clay at this site to inhibit vertical transport of groundwater.</p><p>Arsenite [As(III)] is the dominant oxidation state in contaminated groundwater; however, data from laboratory batch experiments show that As(III) is oxidized to arsenate [As(V)] by manganese (Mn) minerals that are present in the oxidized sediment. Thus, the long-term viability of the deeper aquifers as a source of water supply is likely to depend on As(V) adsorption. The adsorption capacity of these sediments is a function of the oxidation state of As and the concentration of other solutes that compete for adsorption sites. Arsenite that was not oxidized did adsorb, but to a much lesser extent than As(V). Phosphate (P) caused a substantial decrease in As(V) adsorption. Increasing pH and concentrations of silica (Si) had lesser effects on As(V) adsorption. The effect of bicarbonate (HCO<sub>3</sub>) on As(V) adsorption was negligible. Equilibrium constants for adsorption of As(V), As(III), P, Si, HCO<sub>3</sub>, and H were determined from the experimental data and a quantitative model developed. Oxidation of As(III) was modeled with a first-order rate constant. This model was used to successfully simulate As(V) adsorption in the presence of multiple competing solutes. Results from these experiments show that oxidized sediments have a substantial but limited capacity for removal of As from groundwater.</p>","language":"English","publisher":"Elsevier","doi":"10.1016/j.scitotenv.2006.11.029","issn":"00489697","usgsCitation":"Stollenwerk, K.G., Breit, G.N., Welch, A.H., Yount, J., Whitney, J.W., Foster, A.L., Uddin, M., Majumder, R., and Ahmed, N., 2007, Arsenic attenuation by oxidized aquifer sediments in Bangladesh: Science of the Total Environment, v. 379, no. 2-3, p. 133-150, https://doi.org/10.1016/j.scitotenv.2006.11.029.","productDescription":"18 p.","startPage":"133","endPage":"150","numberOfPages":"18","costCenters":[{"id":589,"text":"Toxic Substances Hydrology Program","active":true,"usgs":true}],"links":[{"id":477071,"rank":2,"type":{"id":40,"text":"Open Access Publisher Index Page"},"url":"https://doi.org/10.1016/j.scitotenv.2006.11.029","text":"Publisher Index Page"},{"id":240253,"rank":1,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"Bangladesh","city":"Dhaka","otherGeospatial":"Bengal Basin","geographicExtents":"{\"type\":\"FeatureCollection\",\"features\":[{\"type\":\"Feature\",\"geometry\":{\"type\":\"Polygon\",\"coordinates\":[[[92.67272,22.04124],[92.65226,21.32405],[92.30323,21.47549],[92.36855,20.67088],[92.08289,21.1922],[92.02522,21.70157],[91.83489,22.18294],[91.41709,22.76502],[90.49601,22.80502],[90.58696,22.39279],[90.27297,21.83637],[89.84747,22.03915],[89.70205,21.85712],[89.41886,21.96618],[89.03196,22.05571],[88.87631,22.87915],[88.52977,23.63114],[88.69994,24.23371],[88.08442,24.50166],[88.30637,24.86608],[88.93155,25.23869],[88.20979,25.76807],[88.56305,26.44653],[89.35509,26.01441],[89.83248,25.96508],[89.92069,25.26975],[90.87221,25.1326],[91.7996,25.14743],[92.3762,24.97669],[91.91509,24.13041],[91.46773,24.07264],[91.15896,23.50353],[91.70648,22.98526],[91.86993,23.62435],[92.14603,23.6275],[92.67272,22.04124]]]},\"properties\":{\"name\":\"Bangladesh\"}}]}","volume":"379","issue":"2-3","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"5059ed8be4b0c8380cd49882","contributors":{"authors":[{"text":"Stollenwerk, Kenneth G. kgstolle@usgs.gov","contributorId":578,"corporation":false,"usgs":true,"family":"Stollenwerk","given":"Kenneth","email":"kgstolle@usgs.gov","middleInitial":"G.","affiliations":[],"preferred":true,"id":425109,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Breit, George N. 0000-0003-2188-6798 gbreit@usgs.gov","orcid":"https://orcid.org/0000-0003-2188-6798","contributorId":1480,"corporation":false,"usgs":true,"family":"Breit","given":"George","email":"gbreit@usgs.gov","middleInitial":"N.","affiliations":[{"id":211,"text":"Crustal Geophysics and Geochemistry Science Center","active":true,"usgs":true},{"id":171,"text":"Central Mineral and Environmental Resources Science Center","active":true,"usgs":true}],"preferred":true,"id":425111,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Welch, Alan H.","contributorId":35399,"corporation":false,"usgs":true,"family":"Welch","given":"Alan","email":"","middleInitial":"H.","affiliations":[],"preferred":false,"id":425105,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Yount, James C.","contributorId":39341,"corporation":false,"usgs":true,"family":"Yount","given":"James C.","affiliations":[],"preferred":false,"id":425108,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Whitney, John W. 0000-0003-3824-3692 jwhitney@usgs.gov","orcid":"https://orcid.org/0000-0003-3824-3692","contributorId":804,"corporation":false,"usgs":true,"family":"Whitney","given":"John","email":"jwhitney@usgs.gov","middleInitial":"W.","affiliations":[{"id":318,"text":"Geosciences and Environmental Change Science Center","active":true,"usgs":true}],"preferred":true,"id":425107,"contributorType":{"id":1,"text":"Authors"},"rank":5},{"text":"Foster, Andrea L. 0000-0003-1362-0068 afoster@usgs.gov","orcid":"https://orcid.org/0000-0003-1362-0068","contributorId":1740,"corporation":false,"usgs":true,"family":"Foster","given":"Andrea","email":"afoster@usgs.gov","middleInitial":"L.","affiliations":[{"id":662,"text":"Western Mineral and Environmental Resources Science Center","active":true,"usgs":true},{"id":312,"text":"Geology, Minerals, Energy, and Geophysics Science Center","active":true,"usgs":true}],"preferred":true,"id":425106,"contributorType":{"id":1,"text":"Authors"},"rank":6},{"text":"Uddin, M.N.","contributorId":105979,"corporation":false,"usgs":true,"family":"Uddin","given":"M.N.","email":"","affiliations":[],"preferred":false,"id":425113,"contributorType":{"id":1,"text":"Authors"},"rank":7},{"text":"Majumder, R.K.","contributorId":94929,"corporation":false,"usgs":true,"family":"Majumder","given":"R.K.","email":"","affiliations":[],"preferred":false,"id":425112,"contributorType":{"id":1,"text":"Authors"},"rank":8},{"text":"Ahmed, N.","contributorId":71846,"corporation":false,"usgs":true,"family":"Ahmed","given":"N.","email":"","affiliations":[],"preferred":false,"id":425110,"contributorType":{"id":1,"text":"Authors"},"rank":9}]}}
,{"id":70029971,"text":"70029971 - 2007 - Plan curvature and landslide probability in regions dominated by earth flows and earth slides","interactions":[],"lastModifiedDate":"2012-03-12T17:21:09","indexId":"70029971","displayToPublicDate":"2007-01-01T00:00:00","publicationYear":"2007","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1517,"text":"Engineering Geology","active":true,"publicationSubtype":{"id":10}},"title":"Plan curvature and landslide probability in regions dominated by earth flows and earth slides","docAbstract":"Damaging landslides in the Appalachian Plateau and scattered regions within the Midcontinent of North America highlight the need for landslide-hazard mapping and a better understanding of the geomorphic development of landslide terrains. The Plateau and Midcontinent have the necessary ingredients for landslides including sufficient relief, steep slope gradients, Pennsylvanian and Permian cyclothems that weather into fine-grained soils containing considerable clay, and adequate precipitation. One commonly used parameter in landslide-hazard analysis that is in need of further investigation is plan curvature. Plan curvature is the curvature of the hillside in a horizontal plane or the curvature of the contours on a topographic map. Hillsides can be subdivided into regions of concave outward plan curvature called hollows, convex outward plan curvature called noses, and straight contours called planar regions. Statistical analysis of plan-curvature and landslide datasets indicate that hillsides with planar plan curvature have the highest probability for landslides in regions dominated by earth flows and earth slides in clayey soils (CH and CL). The probability of landslides decreases as the hillsides become more concave or convex. Hollows have a slightly higher probability for landslides than noses. In hollows landslide material converges into the narrow region at the base of the slope. The convergence combined with the cohesive nature of fine-grained soils creates a buttressing effect that slows soil movement and increases the stability of the hillside within the hollow. Statistical approaches that attempt to determine landslide hazard need to account for the complex relationship between plan curvature, type of landslide, and landslide susceptibility. ?? 2007 Elsevier B.V. All rights reserved.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Engineering Geology","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","doi":"10.1016/j.enggeo.2007.01.005","issn":"00137952","usgsCitation":"Ohlmacher, G., 2007, Plan curvature and landslide probability in regions dominated by earth flows and earth slides: Engineering Geology, v. 91, no. 2-4, p. 117-134, https://doi.org/10.1016/j.enggeo.2007.01.005.","startPage":"117","endPage":"134","numberOfPages":"18","costCenters":[],"links":[{"id":212785,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1016/j.enggeo.2007.01.005"},{"id":240323,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"91","issue":"2-4","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505a7b9ce4b0c8380cd79523","contributors":{"authors":[{"text":"Ohlmacher, G.C.","contributorId":63064,"corporation":false,"usgs":true,"family":"Ohlmacher","given":"G.C.","email":"","affiliations":[],"preferred":false,"id":425126,"contributorType":{"id":1,"text":"Authors"},"rank":1}]}}
,{"id":70029973,"text":"70029973 - 2007 - Chromosome painting among Proboscidea, Hyracoidea and Sirenia: Support for Paenungulata (Afrotheria, Mammalia) but not Tethytheria","interactions":[],"lastModifiedDate":"2012-03-12T17:21:09","indexId":"70029973","displayToPublicDate":"2007-01-01T00:00:00","publicationYear":"2007","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":3174,"text":"Proceedings of the Royal Society B: Biological Sciences","active":true,"publicationSubtype":{"id":10}},"title":"Chromosome painting among Proboscidea, Hyracoidea and Sirenia: Support for Paenungulata (Afrotheria, Mammalia) but not Tethytheria","docAbstract":"Despite marked improvements in the interpretation of systematic relationships within Eutheria, particular nodes, including Paenungulata (Hyracoidea, Sirenia and Proboscidea), remain ambiguous. The combination of a rapid radiation, a deep divergence and an extensive morphological diversification has resulted in a limited phylogenetic signal confounding resolution within this clade both at the morphological and nucleotide levels. Cross-species chromosome painting was used to delineate regions of homology between Loxodonta africana (2n = 56), Procavia capensis (2n=54), Trichechus manatus latirostris (2n = 48) and an outgroup taxon, the aardvark (Orycteropus afer, 2n = 20). Changes specific to each lineage were identified and although the presence of a minimum of 11 synapomorphies confirmed the monophyly of Paenungulata, no change characterizing intrapaenungulate relationships was evident. The reconstruction of an ancestral paenungulate karyotype and the estimation of rates of chromosomal evolution indicate a reduced rate of genomic repatterning following the paenungulate radiation. In comparison to data available for other mammalian taxa, the paenungulate rate of chromosomal evolution is slow to moderate. As a consequence, the absence of a chromosomal character uniting two paenungulates (at the level of resolution characterized in this study) may be due to a reduced rate of chromosomal change relative to the length of time separating successive divergence events. ?? 2007 The Royal Society.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Proceedings of the Royal Society B: Biological Sciences","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","doi":"10.1098/rspb.2007.0088","issn":"09628436","usgsCitation":"Pardini, A., O’Brien, P.C., Fu, B., Bonde, R., Elder, F., Ferguson-Smith, M.A., Yang, F., and Robinson, T., 2007, Chromosome painting among Proboscidea, Hyracoidea and Sirenia: Support for Paenungulata (Afrotheria, Mammalia) but not Tethytheria: Proceedings of the Royal Society B: Biological Sciences, v. 274, no. 1615, p. 1333-1340, https://doi.org/10.1098/rspb.2007.0088.","startPage":"1333","endPage":"1340","numberOfPages":"8","costCenters":[],"links":[{"id":477288,"rank":10000,"type":{"id":40,"text":"Open Access Publisher Index Page"},"url":"https://doi.org/10.1098/rspb.2007.0088","text":"Publisher Index Page"},{"id":240359,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"},{"id":212815,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1098/rspb.2007.0088"}],"volume":"274","issue":"1615","noUsgsAuthors":false,"publicationDate":"2007-03-20","publicationStatus":"PW","scienceBaseUri":"5059f5e9e4b0c8380cd4c4ac","contributors":{"authors":[{"text":"Pardini, A.T.","contributorId":57664,"corporation":false,"usgs":true,"family":"Pardini","given":"A.T.","email":"","affiliations":[],"preferred":false,"id":425133,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"O’Brien, P. C. M.","contributorId":55643,"corporation":false,"usgs":true,"family":"O’Brien","given":"P.","email":"","middleInitial":"C. M.","affiliations":[],"preferred":false,"id":425132,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Fu, B.","contributorId":30825,"corporation":false,"usgs":true,"family":"Fu","given":"B.","email":"","affiliations":[],"preferred":false,"id":425131,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Bonde, R. K. 0000-0001-9179-4376","orcid":"https://orcid.org/0000-0001-9179-4376","contributorId":63339,"corporation":false,"usgs":true,"family":"Bonde","given":"R. K.","affiliations":[],"preferred":false,"id":425136,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Elder, F.F.B.","contributorId":60022,"corporation":false,"usgs":true,"family":"Elder","given":"F.F.B.","email":"","affiliations":[],"preferred":false,"id":425134,"contributorType":{"id":1,"text":"Authors"},"rank":5},{"text":"Ferguson-Smith, M. A.","contributorId":18180,"corporation":false,"usgs":true,"family":"Ferguson-Smith","given":"M.","email":"","middleInitial":"A.","affiliations":[],"preferred":false,"id":425129,"contributorType":{"id":1,"text":"Authors"},"rank":6},{"text":"Yang, F.","contributorId":23326,"corporation":false,"usgs":true,"family":"Yang","given":"F.","email":"","affiliations":[],"preferred":false,"id":425130,"contributorType":{"id":1,"text":"Authors"},"rank":7},{"text":"Robinson, T.J.","contributorId":62836,"corporation":false,"usgs":true,"family":"Robinson","given":"T.J.","email":"","affiliations":[],"preferred":false,"id":425135,"contributorType":{"id":1,"text":"Authors"},"rank":8}]}}
,{"id":70029977,"text":"70029977 - 2007 - Advanced technologies demonstrated by the miniature integrated camera and spectrometer (MICAS) aboard deep space 1","interactions":[],"lastModifiedDate":"2012-03-12T17:21:08","indexId":"70029977","displayToPublicDate":"2007-01-01T00:00:00","publicationYear":"2007","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":3454,"text":"Space Science Reviews","active":true,"publicationSubtype":{"id":10}},"title":"Advanced technologies demonstrated by the miniature integrated camera and spectrometer (MICAS) aboard deep space 1","docAbstract":"MICAS is an integrated multi-channel instrument that includes an ultraviolet imaging spectrometer (80-185 nm), two high-resolution visible imagers (10-20 ??rad/pixel, 400-900 nm), and a short-wavelength infrared imaging spectrometer (1250-2600 nm). The wavelength ranges were chosen to maximize the science data that could be collected using existing semiconductor technologies and avoiding the need for multi-octave spectrometers. It was flown on DS1 to validate technologies derived from the development of PICS (Planetary Imaging Camera Spectrometer). These technologies provided a novel systems approach enabling the miniaturization and integration of four instruments into one entity, spanning a wavelength range from the UV to IR, and from ambient to cryogenic temperatures with optical performance at a fraction of a wavelength. The specific technologies incorporated were: a built-in fly-by sequence; lightweight and ultra-stable, monolithic silicon-carbide construction, which enabled room-temperature alignment for cryogenic (85-140 K) performance, and provided superb optical performance and immunity to thermal distortion; diffraction-limited, shared optics operating from 80 to 2600 nm; advanced detector technologies for the UV, visible and short-wavelength IR; high-performance thermal radiators coupled directly to the short-wave infrared (SWIR) detector optical bench, providing an instrument with a mass less than 10 kg, instrument power less than 10 W, and total instrument cost of less than ten million dollars. The design allows the wavelength range to be extended by at least an octave at the short wavelength end and to 50 microns at the long wavelength end. Testing of the completed instrument demonstrated excellent optical performance down to 77 K, which would enable a greatly reduced background for longer wavelength detectors. During the Deep Space 1 Mission, MICAS successfully collected images and spectra for asteroid 9969 Braille, Mars, and comet 19/P Borrelly. The Borrelly encounter was a scientific hallmark providing the first clear, high resolution images and excellent, short-wavelength infrared spectra of the surface of an active comet's nucleus. ?? 2007 Springer Science+Business Media, Inc.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Space Science Reviews","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","doi":"10.1007/s11214-007-9155-9","issn":"00386308","usgsCitation":"Rodgers, D., Beauchamp, P., Soderblom, L., Brown, R.H., Chen, G., Lee, M., Sandel, B., Thomas, D., Benoit, R., and Yelle, R., 2007, Advanced technologies demonstrated by the miniature integrated camera and spectrometer (MICAS) aboard deep space 1: Space Science Reviews, v. 129, no. 4, p. 309-326, https://doi.org/10.1007/s11214-007-9155-9.","startPage":"309","endPage":"326","numberOfPages":"18","costCenters":[],"links":[{"id":212870,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1007/s11214-007-9155-9"},{"id":240429,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"129","issue":"4","noUsgsAuthors":false,"publicationDate":"2007-05-04","publicationStatus":"PW","scienceBaseUri":"5059e702e4b0c8380cd477c2","contributors":{"authors":[{"text":"Rodgers, D.H.","contributorId":83742,"corporation":false,"usgs":true,"family":"Rodgers","given":"D.H.","email":"","affiliations":[],"preferred":false,"id":425156,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Beauchamp, P.M.","contributorId":49606,"corporation":false,"usgs":true,"family":"Beauchamp","given":"P.M.","email":"","affiliations":[],"preferred":false,"id":425154,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Soderblom, L.A. 0000-0002-0917-853X","orcid":"https://orcid.org/0000-0002-0917-853X","contributorId":6139,"corporation":false,"usgs":true,"family":"Soderblom","given":"L.A.","affiliations":[],"preferred":false,"id":425148,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Brown, R. H.","contributorId":19931,"corporation":false,"usgs":false,"family":"Brown","given":"R.","email":"","middleInitial":"H.","affiliations":[],"preferred":false,"id":425150,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Chen, G.-S.","contributorId":20551,"corporation":false,"usgs":true,"family":"Chen","given":"G.-S.","email":"","affiliations":[],"preferred":false,"id":425151,"contributorType":{"id":1,"text":"Authors"},"rank":5},{"text":"Lee, M.","contributorId":32484,"corporation":false,"usgs":true,"family":"Lee","given":"M.","affiliations":[],"preferred":false,"id":425153,"contributorType":{"id":1,"text":"Authors"},"rank":6},{"text":"Sandel, B.R.","contributorId":105881,"corporation":false,"usgs":true,"family":"Sandel","given":"B.R.","email":"","affiliations":[],"preferred":false,"id":425157,"contributorType":{"id":1,"text":"Authors"},"rank":7},{"text":"Thomas, D.A.","contributorId":22584,"corporation":false,"usgs":true,"family":"Thomas","given":"D.A.","email":"","affiliations":[],"preferred":false,"id":425152,"contributorType":{"id":1,"text":"Authors"},"rank":8},{"text":"Benoit, R.T.","contributorId":15834,"corporation":false,"usgs":true,"family":"Benoit","given":"R.T.","email":"","affiliations":[],"preferred":false,"id":425149,"contributorType":{"id":1,"text":"Authors"},"rank":9},{"text":"Yelle, R.V.","contributorId":74523,"corporation":false,"usgs":true,"family":"Yelle","given":"R.V.","email":"","affiliations":[],"preferred":false,"id":425155,"contributorType":{"id":1,"text":"Authors"},"rank":10}]}}
,{"id":70029979,"text":"70029979 - 2007 - Nutrients stimulate leaf breakdown rates and detritivore biomass: Bottom-up effects via heterotrophic pathways","interactions":[],"lastModifiedDate":"2012-03-12T17:21:08","indexId":"70029979","displayToPublicDate":"2007-01-01T00:00:00","publicationYear":"2007","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2932,"text":"Oecologia","active":true,"publicationSubtype":{"id":10}},"title":"Nutrients stimulate leaf breakdown rates and detritivore biomass: Bottom-up effects via heterotrophic pathways","docAbstract":"Most nutrient enrichment studies in aquatic systems have focused on autotrophic food webs in systems where primary producers dominate the resource base. We tested the heterotrophic response to long-term nutrient enrichment in a forested, headwater stream. Our study design consisted of 2 years of pretreatment data in a reference and treatment stream and 2 years of continuous nitrogen (N) + phosphorus addition to the treatment stream. Studies were conducted with two leaf species that differed in initial C:N, Rhododendron maximum (rhododendron) and Acer rubrum (red maple). We determined the effects of nutrient addition on detrital resources (leaf breakdown rates, litter C:N and microbial activity) and tested whether nutrient enrichment affected macroinvertebrate consumers via increased biomass. Leaf breakdown rates were ca. 1.5 and 3?? faster during the first and second years of enrichment, respectively, in the treatment stream for both leaf types. Microbial respiration rates of both leaf types were 3?? higher with enrichment, and macroinvertebrate biomass associated with leaves increased ca. 2-3?? with enrichment. The mass of N in macroinvertebrate biomass relative to leaves tended to increase with enrichment up to 6?? for red maple and up to 44?? for rhododendron leaves. Lower quality (higher C:N) rhododendron leaves exhibited greater changes in leaf nutrient content and macroinvertebrate response to nutrient enrichment than red maple leaves, suggesting a unique response by different leaf species to nutrient enrichment. Nutrient concentrations used in this study were moderate and equivalent to those in streams draining watersheds with altered land use. Thus, our results suggest that similarly moderate levels of enrichment may affect detrital resource quality and subsequently lead to altered energy and nutrient flow in detrital food webs. ?? 2006 Springer-Verlag.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Oecologia","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","doi":"10.1007/s00442-006-0609-7","issn":"00298549","usgsCitation":"Greenwood, J., Rosemond, A., Wallace, J., Cross, W.F., and Weyers, H., 2007, Nutrients stimulate leaf breakdown rates and detritivore biomass: Bottom-up effects via heterotrophic pathways: Oecologia, v. 151, no. 4, p. 637-649, https://doi.org/10.1007/s00442-006-0609-7.","startPage":"637","endPage":"649","numberOfPages":"13","costCenters":[],"links":[{"id":240462,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"},{"id":212897,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1007/s00442-006-0609-7"}],"volume":"151","issue":"4","noUsgsAuthors":false,"publicationDate":"2006-12-05","publicationStatus":"PW","scienceBaseUri":"505a69c1e4b0c8380cd73ea5","contributors":{"authors":[{"text":"Greenwood, J.L.","contributorId":92870,"corporation":false,"usgs":true,"family":"Greenwood","given":"J.L.","email":"","affiliations":[],"preferred":false,"id":425164,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Rosemond, A.D.","contributorId":96621,"corporation":false,"usgs":true,"family":"Rosemond","given":"A.D.","affiliations":[],"preferred":false,"id":425165,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Wallace, J.B.","contributorId":10871,"corporation":false,"usgs":true,"family":"Wallace","given":"J.B.","email":"","affiliations":[],"preferred":false,"id":425162,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Cross, W. F.","contributorId":15412,"corporation":false,"usgs":true,"family":"Cross","given":"W.","email":"","middleInitial":"F.","affiliations":[{"id":36555,"text":"Montana State University","active":true,"usgs":false}],"preferred":false,"id":425163,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Weyers, H.S.","contributorId":8592,"corporation":false,"usgs":true,"family":"Weyers","given":"H.S.","email":"","affiliations":[],"preferred":false,"id":425161,"contributorType":{"id":1,"text":"Authors"},"rank":5}]}}
,{"id":70029983,"text":"70029983 - 2007 - Thermal structure of oceanic transform faults","interactions":[],"lastModifiedDate":"2023-08-28T12:01:32.209149","indexId":"70029983","displayToPublicDate":"2007-01-01T00:00:00","publicationYear":"2007","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1796,"text":"Geology","active":true,"publicationSubtype":{"id":10}},"title":"Thermal structure of oceanic transform faults","docAbstract":"<div id=\"15645253\" class=\"article-section-wrapper js-article-section js-content-section  \" data-section-parent-id=\"0\"><p>We use three-dimensional finite element simulations to investigate the temperature structure beneath oceanic transform faults. We show that using a rheology that incorporates brittle weakening of the lithosphere generates a region of enhanced mantle upwelling and elevated temperatures along the transform; the warmest temperatures and thinnest lithosphere are predicted to be near the center of the transform. Previous studies predicted that the mantle beneath oceanic transform faults is anomalously cold relative to adjacent intraplate regions, with the thickest lithosphere located at the center of the transform. These earlier studies used simplified rheologic laws to simulate the behavior of the lithosphere and underlying asthenosphere. We show that the warmer thermal structure predicted by our calculations is directly attributed to the inclusion of a more realistic brittle rheology. This temperature structure is consistent with a wide range of observations from ridge-transform environments, including the depth of seismicity, geochemical anomalies along adjacent ridge segments, and the tendency for long transforms to break into small intratransform spreading centers during changes in plate motion.</p></div>","language":"English","publisher":"Geological Society of America","doi":"10.1130/G23112A.1","issn":"00917613","usgsCitation":"Behn, M., Boettcher, M., and Hirth, G., 2007, Thermal structure of oceanic transform faults: Geology, v. 35, no. 4, p. 307-310, https://doi.org/10.1130/G23112A.1.","productDescription":"4 p.","startPage":"307","endPage":"310","numberOfPages":"4","costCenters":[],"links":[{"id":477055,"rank":2,"type":{"id":41,"text":"Open Access External Repository Page"},"url":"https://doi.org/10.1130/g23112a.1","text":"External Repository"},{"id":240498,"rank":1,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"35","issue":"4","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505bb25ee4b08c986b325773","contributors":{"authors":[{"text":"Behn, M.D.","contributorId":11006,"corporation":false,"usgs":true,"family":"Behn","given":"M.D.","email":"","affiliations":[],"preferred":false,"id":425172,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Boettcher, M.S.","contributorId":58847,"corporation":false,"usgs":true,"family":"Boettcher","given":"M.S.","email":"","affiliations":[],"preferred":false,"id":425173,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Hirth, G.","contributorId":88957,"corporation":false,"usgs":true,"family":"Hirth","given":"G.","email":"","affiliations":[],"preferred":false,"id":425174,"contributorType":{"id":1,"text":"Authors"},"rank":3}]}}
,{"id":70029984,"text":"70029984 - 2007 - Feasibility of detecting near-surface feature with Rayleigh-wave diffraction","interactions":[],"lastModifiedDate":"2017-11-08T13:35:01","indexId":"70029984","displayToPublicDate":"2007-01-01T00:00:00","publicationYear":"2007","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2165,"text":"Journal of Applied Geophysics","active":true,"publicationSubtype":{"id":10}},"title":"Feasibility of detecting near-surface feature with Rayleigh-wave diffraction","docAbstract":"Detection of near-surfaces features such as voids and faults is challenging due to the complexity of near-surface materials and the limited resolution of geophysical methods. Although multichannel, high-frequency, surface-wave techniques can provide reliable shear (S)-wave velocities in different geological settings, they are not suitable for detecting voids directly based on anomalies of the S-wave velocity because of limitations on the resolution of S-wave velocity profiles inverted from surface-wave phase velocities. Therefore, we studied the feasibility of directly detecting near-surfaces features with surface-wave diffractions. Based on the properties of surface waves, we have derived a Rayleigh-wave diffraction traveltime equation. We also have solved the equation for the depth to the top of a void and an average velocity of Rayleigh waves. Using these equations, the depth to the top of a void/fault can be determined based on traveltime data from a diffraction curve. In practice, only two diffraction times are necessary to define the depth to the top of a void/fault and the average Rayleigh-wave velocity that generates the diffraction curve. We used four two-dimensional square voids to demonstrate the feasibility of detecting a void with Rayleigh-wave diffractions: a 2??m by 2??m with a depth to the top of the void of 2??m, 4??m by 4??m with a depth to the top of the void of 7??m, and 6??m by 6??m with depths to the top of the void 12??m and 17??m. We also modeled surface waves due to a vertical fault. Rayleigh-wave diffractions were recognizable for all these models after FK filtering was applied to the synthetic data. The Rayleigh-wave diffraction traveltime equation was verified by the modeled data. Modeling results suggested that FK filtering is critical to enhance diffracted surface waves. A real-world example is presented to show how to utilize the derived equation of surface-wave diffractions. ?? 2006 Elsevier B.V. All rights reserved.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Journal of Applied Geophysics","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","doi":"10.1016/j.jappgeo.2006.12.002","issn":"09269851","usgsCitation":"Xia, J., Nyquist, J.E., Xu, Y., Roth, M., and Miller, R., 2007, Feasibility of detecting near-surface feature with Rayleigh-wave diffraction: Journal of Applied Geophysics, v. 62, no. 3, p. 244-253, https://doi.org/10.1016/j.jappgeo.2006.12.002.","startPage":"244","endPage":"253","numberOfPages":"10","costCenters":[],"links":[{"id":240529,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"},{"id":212958,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1016/j.jappgeo.2006.12.002"}],"volume":"62","issue":"3","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505a0f39e4b0c8380cd53816","contributors":{"authors":[{"text":"Xia, J.","contributorId":63513,"corporation":false,"usgs":true,"family":"Xia","given":"J.","email":"","affiliations":[],"preferred":false,"id":425177,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Nyquist, Jonathan E.","contributorId":101801,"corporation":false,"usgs":false,"family":"Nyquist","given":"Jonathan","email":"","middleInitial":"E.","affiliations":[{"id":34225,"text":"Temple University, Philadelphia, Pa.","active":true,"usgs":false}],"preferred":false,"id":425176,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Xu, Y.","contributorId":47816,"corporation":false,"usgs":true,"family":"Xu","given":"Y.","email":"","affiliations":[],"preferred":false,"id":425175,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Roth, M.J.S.","contributorId":71003,"corporation":false,"usgs":true,"family":"Roth","given":"M.J.S.","email":"","affiliations":[],"preferred":false,"id":425178,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Miller, R. D.","contributorId":92693,"corporation":false,"usgs":true,"family":"Miller","given":"R. D.","affiliations":[],"preferred":false,"id":425179,"contributorType":{"id":1,"text":"Authors"},"rank":5}]}}
,{"id":70029987,"text":"70029987 - 2007 - Hydrodynamics of coalbed methane reservoirs in the Black Warrior Basin: Key to understanding reservoir performance and environmental issues","interactions":[],"lastModifiedDate":"2012-03-12T17:21:07","indexId":"70029987","displayToPublicDate":"2007-01-01T00:00:00","publicationYear":"2007","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":"Hydrodynamics of coalbed methane reservoirs in the Black Warrior Basin: Key to understanding reservoir performance and environmental issues","docAbstract":"The Black Warrior Basin of the southeastern United States hosts one of the world's most prolific and long-lived coalbed methane plays, and the wealth of experience in this basin provides insight into the relationships among basin hydrology, production performance, and environmental issues. Along the southeast margin of the basin, meteoric recharge of reservoir coal beds exposed in an upturned fold limb exerts a strong control on water chemistry, reservoir pressure, and production performance. Fresh-water plumes containing Na-HCO3 waters with low TDS content extend from the structurally upturned basin margin into the interior of the basin. Northwest of the plumes, coal beds contain Na-Cl waters with moderate to high-TDS content. Carbon isotope data from produced gas and mineral cements suggest that the fresh-water plumes have been the site of significant bacterial activity and that the coalbed methane reservoirs contain a mixture of thermogenic and late-stage biogenic gases. Water produced from the fresh-water plumes may be disposed safely at the surface, whereas underground injection has been used locally to dispose of highly saline water. Wells in areas that had normal hydrostatic reservoir pressure prior to development tend to produce large volumes of water and may take up to 4 a to reach peak gas production. In contrast, wells drilled in naturally underpressured areas distal to the fresh-water plumes typically produce little water and achieve peak gas rates during the first year of production. Environmental debate has focused largely on issues associated with hydrologic communication between deep reservoir coal beds and shallow aquifers. In the coalbed methane fields of the Black Warrior Basin, a broad range of geologic evidence suggests that flow is effectively confined within coal and that the thick intervals of marine shale separating coal zones limit cross-formational flow. ?? 2007 Elsevier Ltd. All rights reserved.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Applied Geochemistry","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","doi":"10.1016/j.apgeochem.2007.04.009","issn":"08832927","usgsCitation":"Pashin, J., 2007, Hydrodynamics of coalbed methane reservoirs in the Black Warrior Basin: Key to understanding reservoir performance and environmental issues: Applied Geochemistry, v. 22, no. 10, p. 2257-2272, https://doi.org/10.1016/j.apgeochem.2007.04.009.","startPage":"2257","endPage":"2272","numberOfPages":"16","costCenters":[],"links":[{"id":212985,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1016/j.apgeochem.2007.04.009"},{"id":240561,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"22","issue":"10","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505a3340e4b0c8380cd5ee6e","contributors":{"authors":[{"text":"Pashin, J.C.","contributorId":41897,"corporation":false,"usgs":true,"family":"Pashin","given":"J.C.","affiliations":[],"preferred":false,"id":425185,"contributorType":{"id":1,"text":"Authors"},"rank":1}]}}
,{"id":70029992,"text":"70029992 - 2007 - Local magnitude determinations for intermountain seismic belt earthquakes from broadband digital data","interactions":[],"lastModifiedDate":"2012-03-12T17:21:36","indexId":"70029992","displayToPublicDate":"2007-01-01T00:00:00","publicationYear":"2007","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":"Local magnitude determinations for intermountain seismic belt earthquakes from broadband digital data","docAbstract":"The University of Utah Seismograph Stations (UUSS) earthquake catalogs for the Utah and Yellowstone National Park regions contain two types of size measurements: local magnitude (ML) and coda magnitude (MC), which is calibrated against ML. From 1962 through 1993, UUSS calculated ML values for southern and central Intermountain Seismic Belt earthquakes using maximum peak-to-peak (p-p) amplitudes on paper records from one to five Wood-Anderson (W-A) seismographs in Utah. For ML determinations of earthquakes since 1994, UUSS has utilized synthetic W-A seismograms from U.S. National Seismic Network and UUSS broadband digital telemetry stations in the region, which numbered 23 by the end of our study period on 30 June 2002. This change has greatly increased the percentage of earthquakes for which ML can be determined. It is now possible to determine ML for all M ???3 earthquakes in the Utah and Yellowstone regions and earthquakes as small as M <1 in some areas. To maintain continuity in the magnitudes in the UUSS earthquake catalogs, we determined empirical ML station corrections that minimize differences between MLs calculated from paper and synthetic W-A records. Application of these station corrections, in combination with distance corrections from Richter (1958) which have been in use at UUSS since 1962, produces ML values that do not show any significant distance dependence. ML determinations for the Utah and Yellowstone regions for 1981-2002 using our station corrections and Richter's distance corrections have provided a reliable data set for recalibrating the MC scales for these regions. Our revised ML values are consistent with available moment magnitude determinations for Intermountain Seismic Belt earthquakes. To facilitate automatic ML measurements, we analyzed the distribution of the times of maximum p-p amplitudes in synthetic W-A records. A 30-sec time window for maximum amplitudes, beginning 5 sec before the predicted Sg time, encompasses 95% of the maximum p-p amplitudes. In our judgment, this time window represents a good compromise between maximizing the chances of capturing the maximum amplitude and minimizing the risk of including other seismic events.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Bulletin of the Seismological Society of America","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","doi":"10.1785/0120060114","issn":"00371106","usgsCitation":"Pechmann, J., Nava, S., Terra, F., and Bernier, J., 2007, Local magnitude determinations for intermountain seismic belt earthquakes from broadband digital data: Bulletin of the Seismological Society of America, v. 97, no. 2, p. 557-574, https://doi.org/10.1785/0120060114.","startPage":"557","endPage":"574","numberOfPages":"18","costCenters":[],"links":[{"id":213071,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1785/0120060114"},{"id":240656,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"97","issue":"2","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505a48dfe4b0c8380cd681b7","contributors":{"authors":[{"text":"Pechmann, J.C.","contributorId":102632,"corporation":false,"usgs":true,"family":"Pechmann","given":"J.C.","email":"","affiliations":[],"preferred":false,"id":425204,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Nava, S.J.","contributorId":66470,"corporation":false,"usgs":true,"family":"Nava","given":"S.J.","email":"","affiliations":[],"preferred":false,"id":425203,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Terra, F.M.","contributorId":11832,"corporation":false,"usgs":true,"family":"Terra","given":"F.M.","email":"","affiliations":[],"preferred":false,"id":425201,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Bernier, J.C.","contributorId":30442,"corporation":false,"usgs":true,"family":"Bernier","given":"J.C.","email":"","affiliations":[],"preferred":false,"id":425202,"contributorType":{"id":1,"text":"Authors"},"rank":4}]}}
,{"id":70029998,"text":"70029998 - 2007 - Coupling contaminants with demography: Effects of lead and selenium in Pacific common eiders","interactions":[],"lastModifiedDate":"2018-05-13T12:34:44","indexId":"70029998","displayToPublicDate":"2007-01-01T00:00:00","publicationYear":"2007","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1571,"text":"Environmental Toxicology and Chemistry","active":true,"publicationSubtype":{"id":10}},"title":"Coupling contaminants with demography: Effects of lead and selenium in Pacific common eiders","docAbstract":"<p><span>We coupled intensive population monitoring with collection of blood samples from 383 nesting Pacific common eiders (</span><i>Somateria mollisima v-nigrum</i><span>) at two locations in Alaska (USA) from 2002 to 2004. We investigated annual, geographic, and within-season variation in blood concentrations of lead and selenium; compared exposure patterns with sympatrically nesting spectacled eiders (</span><i>Somateria fischeri</i><span>); and examined relationships with clutch size, egg viability, probability of hatching, and apparent survival of adult females. Lead concentrations were elevated in 3.6% of females, and all individuals exhibited elevated selenium, most (81%) at concentrations associated with death in captive waterfowl. Blood lead and selenium concentrations varied both within and among site-years and were lower than those of spectacled eiders. During incubation, blood lead concentrations in females increased significantly (possibly via re-release of stored lead from bone), whereas selenium concentrations decreased (likely because of natural excretion). Probability of a nest containing at least one nonviable egg was positively related to blood selenium in hens, but adverse effects in other life-history variables were not supported. Although reproduction appeared to be sensitive to selenium toxicity, our data suggest that high rates of nonviability are unlikely in this population and that selenium-related reductions to clutch size would be inconsequential at the scale of overall population dynamics. We conclude that Pacific common eiders and other wild marine birds likely have higher selenium tolerances than freshwater species and that interspecific differences in exposure levels may reflect differences in reproductive strategies.</span></p>","language":"English","publisher":"Wiley","doi":"10.1897/06-537R.1","issn":"07307268","usgsCitation":"Wilson, H., Flint, P.L., and Powell, A., 2007, Coupling contaminants with demography: Effects of lead and selenium in Pacific common eiders: Environmental Toxicology and Chemistry, v. 26, no. 7, p. 1410-1417, https://doi.org/10.1897/06-537R.1.","productDescription":"8 p.","startPage":"1410","endPage":"1417","onlineOnly":"N","additionalOnlineFiles":"N","costCenters":[{"id":114,"text":"Alaska Science Center","active":true,"usgs":true}],"links":[{"id":240187,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"},{"id":212665,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1897/06-537R.1"}],"volume":"26","issue":"7","noUsgsAuthors":false,"publicationDate":"2007-07-01","publicationStatus":"PW","scienceBaseUri":"5059fc8ce4b0c8380cd4e2ee","contributors":{"authors":[{"text":"Wilson, H.M.","contributorId":37306,"corporation":false,"usgs":true,"family":"Wilson","given":"H.M.","email":"","affiliations":[],"preferred":false,"id":425229,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Flint, Paul L. 0000-0002-8758-6993 pflint@usgs.gov","orcid":"https://orcid.org/0000-0002-8758-6993","contributorId":3284,"corporation":false,"usgs":true,"family":"Flint","given":"Paul","email":"pflint@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":425230,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Powell, A.N.","contributorId":66194,"corporation":false,"usgs":true,"family":"Powell","given":"A.N.","email":"","affiliations":[],"preferred":false,"id":425231,"contributorType":{"id":1,"text":"Authors"},"rank":3}]}}
,{"id":70029999,"text":"70029999 - 2007 - Sizing up earthquake damage: Differing points of view","interactions":[],"lastModifiedDate":"2012-03-12T17:21:10","indexId":"70029999","displayToPublicDate":"2007-01-01T00:00:00","publicationYear":"2007","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1829,"text":"Geotimes","active":true,"publicationSubtype":{"id":10}},"title":"Sizing up earthquake damage: Differing points of view","docAbstract":"When a catastrophic event strikes an urban area, many different professionals hit the ground running. Emergency responders respond, reporters report, and scientists and engineers collect and analyze data. Journalists and scientists may share interest in these events, but they have very different missions. To a journalist, earthquake damage is news. To a scientist or engineer, earthquake damage represents a valuable source of data that can help us understand how strongly the ground shook as well as how particular structures responded to the shaking.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Geotimes","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","issn":"00168556","usgsCitation":"Hough, S., and Bolen, A., 2007, Sizing up earthquake damage: Differing points of view: Geotimes, v. 52, no. 7, p. 46-48.","startPage":"46","endPage":"48","numberOfPages":"3","costCenters":[],"links":[{"id":240188,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"52","issue":"7","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505b9124e4b08c986b319787","contributors":{"authors":[{"text":"Hough, S.","contributorId":54355,"corporation":false,"usgs":true,"family":"Hough","given":"S.","email":"","affiliations":[],"preferred":false,"id":425232,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Bolen, A.","contributorId":92057,"corporation":false,"usgs":true,"family":"Bolen","given":"A.","email":"","affiliations":[],"preferred":false,"id":425233,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}}
,{"id":70030002,"text":"70030002 - 2007 - Juvenile densities relative to water regime in mainstem reservoirs of the Tennessee River, USA","interactions":[],"lastModifiedDate":"2012-03-12T17:21:09","indexId":"70030002","displayToPublicDate":"2007-01-01T00:00:00","publicationYear":"2007","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2594,"text":"Lakes and Reservoirs: Research and Management","active":true,"publicationSubtype":{"id":10}},"title":"Juvenile densities relative to water regime in mainstem reservoirs of the Tennessee River, USA","docAbstract":"Successful reproduction and development of strong year classes of fish in storage reservoirs are commonly associated with reproductive seasons of high water level and extensive flooding. Responses to flooding are likely to be less pronounced or altogether different in mainstem navigation reservoirs that experience limited water level fluctuation. In these reservoirs, water regime characteristics such as timing of flooding, instability of water level, and water retention could supersede the effects of water level. We examined existing data to identify aspects of the water regime that have detectable consequence on juveniles of selected taxa in a sequence of four reservoirs of the Tennessee River that exhibited relatively small annual rises. Empirical models relating density of selected age-0 centrarchids to water regime suggested that descriptors of spring and summer flow through the reservoirs, water level instability, and summer water level were better related to juvenile densities than was spring water level. Different water regimes had different effects on the study species, and presumably other species in the fish communities. Therefore, a diversity of water regimes rather than a rigid rule curve is likely most beneficial to the long-term permanence of the fish assemblages of the study reservoirs. Fixed rule curves produce drawdown zones devoid of vegetation consisting primarily of mudflats of limited ecological value to floodplain species, and maintenance of water levels within the rule curve force operational drops and rises that adversely affect littoral spawners. In developing water management plans, regulatory agencies should consider incorporating managed randomness into rule curves. ?? 2007 Blackwell Publishing Asia Pty Ltd.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Lakes and Reservoirs: Research and Management","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","doi":"10.1111/j.1440-1770.2007.00327.x","issn":"13205331","usgsCitation":"Miranda, L., and Lowery, D., 2007, Juvenile densities relative to water regime in mainstem reservoirs of the Tennessee River, USA: Lakes and Reservoirs: Research and Management, v. 12, no. 2, p. 87-96, https://doi.org/10.1111/j.1440-1770.2007.00327.x.","startPage":"87","endPage":"96","numberOfPages":"10","costCenters":[],"links":[{"id":212725,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1111/j.1440-1770.2007.00327.x"},{"id":240254,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"12","issue":"2","noUsgsAuthors":false,"publicationDate":"2007-07-04","publicationStatus":"PW","scienceBaseUri":"505a4036e4b0c8380cd64b9b","contributors":{"authors":[{"text":"Miranda, L.E.","contributorId":58406,"corporation":false,"usgs":true,"family":"Miranda","given":"L.E.","affiliations":[],"preferred":false,"id":425245,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Lowery, D.R.","contributorId":39586,"corporation":false,"usgs":true,"family":"Lowery","given":"D.R.","email":"","affiliations":[],"preferred":false,"id":425244,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}}
,{"id":70030003,"text":"70030003 - 2007 - The role of natural vegetative disturbance in determining stream reach characteristics in central Idaho and western Montana","interactions":[],"lastModifiedDate":"2015-12-16T07:30:49","indexId":"70030003","displayToPublicDate":"2007-01-01T00:00:00","publicationYear":"2007","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2900,"text":"Northwest Science","onlineIssn":"2161-9859","printIssn":"0029-344X","active":true,"publicationSubtype":{"id":10}},"title":"The role of natural vegetative disturbance in determining stream reach characteristics in central Idaho and western Montana","docAbstract":"<p>We evaluated the relationship between natural vegetative disturbance and changes in stream habitat and macroinvertebrate metrics within 33 randomly selected minimally managed watersheds in central Idaho and western Montana. Changes in stream reach conditions were related to vegetative disturbance for the time periods from 1985 to 1993 and 1993 to 2000, respectively, at the following three spatial scales; within the stream buffer and less than 1 km from the evaluated reach, within the watershed and within 1 km of the stream reach, and within the watershed. Data for stream reaches were based on field surveys and vegetative disturbance was generated for the watershed above the sampled reach using remotely sensed data and geographical information systems. Large scale (&gt;100 ha) vegetative disturbance was common within the study area. Even though natural vegetative disturbance rates were high, we found that few of the measured attributes were related to the magnitude of vegetative disturbance. The three physical habitat attributes that changed significantly were sinuosity, median particle size, and percentage of undercut bank; each was related to the disturbance in the earlier (1985-1993) time frame. There was a significant relationship between changes in two macroinvertebrate metrics, abundance and percent collectors/filterers, and the magnitude of disturbance during the more recent time period (1993-2000). We did not find a consistent relationship between the location of the disturbance within the watershed and changes in stream conditions. Our findings suggest that natural vegetative disturbance within the northern Rocky Mountains is complex but likely does not result in substantial short-term changes in the characteristics of most stream reaches. ?? 2007 by the Northwest Scientific Association. All rights reserved.</p>","language":"English","publisher":"Northwest Scientific Association","doi":"10.3955/0029-344X-81.3.224","issn":"0029344X","usgsCitation":"Roper, B., Jarvis, B., and Kershner, J.L., 2007, The role of natural vegetative disturbance in determining stream reach characteristics in central Idaho and western Montana: Northwest Science, v. 81, no. 3, p. 224-238, https://doi.org/10.3955/0029-344X-81.3.224.","productDescription":"15 p.","startPage":"224","endPage":"238","numberOfPages":"15","onlineOnly":"N","additionalOnlineFiles":"N","costCenters":[{"id":481,"text":"Northern Rocky Mountain Science Center","active":true,"usgs":true}],"links":[{"id":240255,"rank":1,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"United States","state":"Idaho, Montana","geographicExtents":"{\n  \"type\": \"FeatureCollection\",\n  \"features\": [\n    {\n      \"type\": \"Feature\",\n      \"properties\": {},\n      \"geometry\": {\n        \"type\": \"Polygon\",\n        \"coordinates\": [\n          [\n            [\n              -115.57617187499999,\n              44.134913443750726\n            ],\n            [\n              -115.57617187499999,\n              46.63435070293566\n            ],\n            [\n              -111.97265625,\n              46.63435070293566\n            ],\n            [\n              -111.97265625,\n              44.134913443750726\n            ],\n            [\n              -115.57617187499999,\n              44.134913443750726\n            ]\n          ]\n        ]\n      }\n    }\n  ]\n}","volume":"81","issue":"3","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505baf88e4b08c986b324883","contributors":{"authors":[{"text":"Roper, B.B.","contributorId":65280,"corporation":false,"usgs":true,"family":"Roper","given":"B.B.","email":"","affiliations":[],"preferred":false,"id":425246,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Jarvis, B.","contributorId":69785,"corporation":false,"usgs":true,"family":"Jarvis","given":"B.","email":"","affiliations":[],"preferred":false,"id":425247,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Kershner, J. L.","contributorId":100322,"corporation":false,"usgs":true,"family":"Kershner","given":"J.","email":"","middleInitial":"L.","affiliations":[],"preferred":false,"id":425248,"contributorType":{"id":1,"text":"Authors"},"rank":3}]}}
,{"id":70030005,"text":"70030005 - 2007 - A field assessment of the value of steady shape hydraulic tomography for characterization of aquifer heterogeneities","interactions":[],"lastModifiedDate":"2018-04-03T17:34:05","indexId":"70030005","displayToPublicDate":"2007-01-01T00:00:00","publicationYear":"2007","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":3722,"text":"Water Resources Research","onlineIssn":"1944-7973","printIssn":"0043-1397","active":true,"publicationSubtype":{"id":10}},"title":"A field assessment of the value of steady shape hydraulic tomography for characterization of aquifer heterogeneities","docAbstract":"<p><span>Hydraulic tomography is a promising approach for obtaining information on variations in hydraulic conductivity on the scale of relevance for contaminant transport investigations. This approach involves performing a series of pumping tests in a format similar to tomography. We present a field‐scale assessment of hydraulic tomography in a porous aquifer, with an emphasis on the steady shape analysis methodology. The hydraulic conductivity (K) estimates from steady shape and transient analyses of the tomographic data compare well with those from a tracer test and direct‐push permeameter tests, providing a field validation of the method. Zonations based on equal‐thickness layers and cross‐hole radar surveys are used to regularize the inverse problem. The results indicate that the radar surveys provide some useful information regarding the geometry of the K field. The steady shape analysis provides results similar to the transient analysis at a fraction of the computational burden. This study clearly demonstrates the advantages of hydraulic tomography over conventional pumping tests, which provide only large‐scale averages, and small‐scale hydraulic tests (e.g., slug tests), which cannot assess strata connectivity and may fail to sample the most important pathways or barriers to flow.</span></p>","language":"English","publisher":"American Geophysical Union","doi":"10.1029/2006WR004932","usgsCitation":"Bohling, G.C., Butler, J.J., Zhan, X., and Knoll, M.D., 2007, A field assessment of the value of steady shape hydraulic tomography for characterization of aquifer heterogeneities: Water Resources Research, v. 43, no. 5, Article W05430; 23 p., https://doi.org/10.1029/2006WR004932.","productDescription":"Article W05430; 23 p.","costCenters":[],"links":[{"id":477286,"rank":1,"type":{"id":41,"text":"Open Access External Repository Page"},"url":"http://hdl.handle.net/1808/18966","text":"External Repository"},{"id":240290,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"43","issue":"5","noUsgsAuthors":false,"publicationDate":"2007-05-22","publicationStatus":"PW","scienceBaseUri":"5059e3cee4b0c8380cd4622c","contributors":{"authors":[{"text":"Bohling, Geoffrey C.","contributorId":43109,"corporation":false,"usgs":false,"family":"Bohling","given":"Geoffrey","email":"","middleInitial":"C.","affiliations":[],"preferred":false,"id":425256,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Butler, James J. Jr.","contributorId":199860,"corporation":false,"usgs":false,"family":"Butler","given":"James","suffix":"Jr.","email":"","middleInitial":"J.","affiliations":[],"preferred":false,"id":425253,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Zhan, Xiaoyong","contributorId":140206,"corporation":false,"usgs":false,"family":"Zhan","given":"Xiaoyong","email":"","affiliations":[],"preferred":false,"id":425255,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Knoll, Michael D.","contributorId":195370,"corporation":false,"usgs":false,"family":"Knoll","given":"Michael","email":"","middleInitial":"D.","affiliations":[],"preferred":false,"id":425254,"contributorType":{"id":1,"text":"Authors"},"rank":4}]}}
,{"id":70030016,"text":"70030016 - 2007 - Big lake records preserved in a little lake's sediment: An example from Silver Lake, Michigan, USA","interactions":[],"lastModifiedDate":"2016-05-06T11:33:51","indexId":"70030016","displayToPublicDate":"2007-01-01T00:00:00","publicationYear":"2007","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2411,"text":"Journal of Paleolimnology","active":true,"publicationSubtype":{"id":10}},"title":"Big lake records preserved in a little lake's sediment: An example from Silver Lake, Michigan, USA","docAbstract":"<p><span>We reconstruct postglacial lake-level history within the Lake Michigan basin using soil stratigraphy, ground-penetrating radar (GPR), sedimentology and&nbsp;</span><span>14</span><span>C data from the Silver Lake basin, which lies adjacent to Lake Michigan. Stratigraphy in nine vibracores recovered from the floor of Silver Lake appears to reflect fluctuation of water levels in the Lake Michigan basin. Aeolian activity within the study area from 3,000&nbsp;years (cal yr. B.P.) to the present was inferred from analysis of buried soils, an aerial photograph sequence, and GPR. Sediments in and around Silver Lake appear to contain a paleoenvironmental record that spans the entire post-glacial history of the Lake Michigan basin. We suggest that (1) a pre-Nipissing rather than a Nipissing barrier separated Silver Lake basin from the Lake Michigan basin, (2) that the Nipissing transgression elevated the water table in the Silver Lake basin about 6,500&nbsp;cal yr. B.P., resulting in reestablishment of a lake within the basin, and (3) that recent dune migration into Silver Lake is associated with levels of Lake Michigan.</span></p>","language":"English","publisher":"Springer","doi":"10.1007/s10933-006-9053-2","issn":"09212728","usgsCitation":"Fisher, T., Loope, W., Pierce, W., and Jol, H., 2007, Big lake records preserved in a little lake's sediment: An example from Silver Lake, Michigan, USA: Journal of Paleolimnology, v. 37, no. 3, p. 365-382, https://doi.org/10.1007/s10933-006-9053-2.","productDescription":"18 p.","startPage":"365","endPage":"382","onlineOnly":"N","additionalOnlineFiles":"N","costCenters":[{"id":324,"text":"Great Lakes Science Center","active":true,"usgs":true}],"links":[{"id":240464,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"},{"id":212899,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1007/s10933-006-9053-2"}],"volume":"37","issue":"3","noUsgsAuthors":false,"publicationDate":"2007-01-11","publicationStatus":"PW","scienceBaseUri":"5059f128e4b0c8380cd4aa86","contributors":{"authors":[{"text":"Fisher, T.G.","contributorId":67754,"corporation":false,"usgs":true,"family":"Fisher","given":"T.G.","email":"","affiliations":[],"preferred":false,"id":425333,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Loope, W.L.","contributorId":22280,"corporation":false,"usgs":true,"family":"Loope","given":"W.L.","email":"","affiliations":[],"preferred":false,"id":425332,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Pierce, W.","contributorId":17493,"corporation":false,"usgs":true,"family":"Pierce","given":"W.","affiliations":[],"preferred":false,"id":425331,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Jol, H.M.","contributorId":77717,"corporation":false,"usgs":true,"family":"Jol","given":"H.M.","affiliations":[],"preferred":false,"id":425334,"contributorType":{"id":1,"text":"Authors"},"rank":4}]}}
,{"id":70030020,"text":"70030020 - 2007 - Courtship and mating in free-living spotted hyenas","interactions":[],"lastModifiedDate":"2012-03-12T17:21:08","indexId":"70030020","displayToPublicDate":"2007-01-01T00:00:00","publicationYear":"2007","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":986,"text":"Behaviour","active":true,"publicationSubtype":{"id":10}},"title":"Courtship and mating in free-living spotted hyenas","docAbstract":"Female spotted hyenas (Crocuta crocuta) are larger and more aggressive than males, and their genitalia are heavily 'masculinized'. These odd traits in females pose unusual challenges for males during courtship and copulation. Here our goals were to describe and quantify the behavior patterns involved in courtship and copulation in Crocuta, and determine whether rates of affiliative behavior directed toward females by males vary with female age, social rank, or time to conception. We also inquired whether consort formation with a particular female was necessary for a male to sire that female's cubs. Behavioral observations and paternity data based on 12 microsatellite loci were collected over 11 years from free-ranging hyenas in Kenya. Several of the courtship displays exhibited by male hyenas differed from those found in other carnivores, and appeared to reflect intense motivational conflict between tendencies to approach and flee from females. Most male advances were either ignored by females or elicited aggression from females toward males. Rates of male affiliative behavior toward females peaked around the time of conception. Although males behaved similarly toward young and old females in the highest social rank category, males directed more affiliative behavior toward older than younger females that were mid- and low-ranking. Multiple short mounts usually preceded a long mount, but intromission and ejaculation appeared to occur only during long mounts. Female receptivity was indicated by inhibited aggression toward the male and assumption of a distinctive receptive stance. The only behavior indicative of female proceptivity was following of the male by the female in mating contexts. Some males who sired cubs formed consortships with females whereas others did not, suggesting that individual male hyenas may adopt alternative reproductive tactics to attract and acquire mates. Our results also suggest that low fertility may be an important cost of female virilization in this species. ?? 2007 Brill Academic Publishers.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Behaviour","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","doi":"10.1163/156853907781476418","issn":"00057959","usgsCitation":"Szykman, M., Van Horn, R.C., Engh, A., Boydston, E., and Holekamp, K., 2007, Courtship and mating in free-living spotted hyenas: Behaviour, v. 144, no. 7, p. 815-846, https://doi.org/10.1163/156853907781476418.","startPage":"815","endPage":"846","numberOfPages":"32","costCenters":[],"links":[{"id":212960,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1163/156853907781476418"},{"id":240531,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"144","issue":"7","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"5059fc8ee4b0c8380cd4e301","contributors":{"authors":[{"text":"Szykman, M.","contributorId":50858,"corporation":false,"usgs":true,"family":"Szykman","given":"M.","affiliations":[],"preferred":false,"id":425363,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Van Horn, R. C.","contributorId":53745,"corporation":false,"usgs":true,"family":"Van Horn","given":"R.","email":"","middleInitial":"C.","affiliations":[],"preferred":false,"id":425365,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Engh, A.L.","contributorId":50860,"corporation":false,"usgs":true,"family":"Engh","given":"A.L.","affiliations":[],"preferred":false,"id":425364,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Boydston, E. E.","contributorId":106045,"corporation":false,"usgs":false,"family":"Boydston","given":"E. E.","affiliations":[],"preferred":false,"id":425366,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Holekamp, K.E.","contributorId":34077,"corporation":false,"usgs":true,"family":"Holekamp","given":"K.E.","affiliations":[],"preferred":false,"id":425362,"contributorType":{"id":1,"text":"Authors"},"rank":5}]}}
]}