An evaluation of sediment rating curves for estimating suspended sediment concentrations for subsequent flux calculations
A. J. Horowitz
2003, Hydrological Processes (17) 3387-3409
In the absence of actual suspended sediment concentration (SSC) measurements, hydrologists have used sediment rating (sediment transport) curves to estimate (predict) SSCs for subsequent flux calculations. Various evaluations of the sediment rating-curve method were made using data from long-term, daily sediment-measuring sites within large (>1 000 000 km2), medium (<1...
Response signatures of four biological indicators to an iron and steel industrial landfill
Paul M. Stewart, Jason T. Butcher, Thomas P. Simon
Thomas P. Simon, editor(s)
2003, Book chapter, Macroinvertebrate assemblages associated with patterns in land use and water quality
Industrial landfills greatly modify surrounding areas by affecting chemical, physical, and biological integrity. Few data quantifying contaminant levels near landfills in sediments or in the organisms living near landfills exist. We examined several indicators of the aquatic community to determine whether a relationship existed between proximity to an industrial landfill...
Monitoring in the nearshore: A process for making reasoned decisions
James L. Bodkin, T.A. Dean
2003, Report, EVOS Restoration Project 030687 Final Report
Over the past several years, a conceptual framework for the GEM nearshore monitoring program has been developed through a series of workshops. However, details of the proposed monitoring program, e.g. what to sample, where to sample, when to sample and at how many sites, have yet to be determined. In...
Protozoal and epitheliocystis-like infections in the introduced bluestripe snapper (Lutjanus kasmira) in Hawaii
Thierry M. Work, Robert Rameyer, Geraldine Takata, Michael L. Kent
2003, Diseases of Aquatic Organisms (57) 59-66
The bluestripe snapper, or taape, was introduced into Hawaii in the 1950s and has since become very abundant throughout the archipelago. As part of a health survey of reef fish in Hawaii, we necropsied 120 taape collected from various coastal areas south of Oahu and examined fish histology for extraintestinal...
Effects of repeated TFM applications on riffle macroinvertebrate communities in four Great Lakes tributaries
John W. Weisser, Jean V. Adams, Richard J. Schuldt, Gregg A. Baldwin, Dennis S. Lavis, Jeffrey W. Slade, John W. Heinrich
2003, Journal of Great Lakes Research (29) 552-565
As part of the sea lamprey control program in the Great Lakes, a suite of about 150 sea lamprey producing streams have been regularly treated with the lampricide 3-trifluoromethyl-4-nitrophenol (TFM) every 3 to 5 years since 1958. State, provincial, and tribal agencies in the basin supported the use of TFM...
Nontarget bird exposure to DRC-1339 during fall in North Dakota and spring in South Dakota
Thomas W. Custer, Christine M. Custer, Paul M. Dummer, George M. Linz, Louis Sileo, Randal S. Stahl, John J. Johnston
G.M. Linz, editor(s)
2003, Book chapter, Management of North American Blackbirds
Blackbirds frequently use ripening sunflower (Heltantbus annuus) as a food source in the northern Great Plains. In 1999 and 2000, the avicide DRC-1339 (3-chloro-4-methylaniline hydrochloride) was used experimentally on fall-ripening sunflower fields in North Dakota so researchers could evaluate its effectiveness for reducing crop depredations by blackbirds. DRC-1339 was applied...
Relationship of tadpole stage to location of echinostome cercaria encystment and the consequences for tadpole survival
A.M. Schotthoefer, Rebecca A. Cole, V.R. Beasley
2003, Journal of Parasitology (89) 475-482
The effect of echinostome infections on the survival of Rana pipiens tadpoles was examined in relation to developmental stage of tadpoles. Individual tadpoles of Gosner stages 25, 27, 32–33, and 37–39 were exposed to 1 of 4 levels of cercariae (0, 20, 50, or 100). Only tadpoles at stage 25, the earliest...
Brown-headed cowbirds in grasslands: Their habitats, hosts, and response to management
Jill A. Shaffer, Christopher M. Goldade, Meghan F. Dinkins, Douglas H. Johnson, Lawrence D. Igl, Betty R. Euliss
2003, Prairie Naturalist (35) 145-186
The brown-headed cowbird (Molothrus ater) is an obligate brood parasite whose numbers have increased in recent decades to the potential detriment of the species that they parasitize. Thus, most management efforts focus on discouraging brown-headed cowbird parasitism or controlling brown-headed cowbird populations. Keys to discouraging cowbird parasitism or controlling populations...
Large wood recruitment and redistribution in headwater streams in the southern Oregon Coast Range, U.S.A
Christine L. May, Robert E. Gresswell
2003, Canadian Journal of Forest Research (33) 1352-1362
Large wood recruitment and redistribution mechanisms were investigated in a 3.9 km2 basin with an old-growth Pseudotsuga menziesii (Mirb.) Franco and Tsuga heterophylla (Raf.) Sarg. forest, located in the southern Coast Range of Oregon. Stream size and topographic setting strongly influenced processes that delivered wood to the channel network. In small colluvial channels draining steep...
Macroinvertebrate assemblages associated with patterns in land use and water quality
Daren Carlisle, Paul M. Stewart, Jason T. Butcher
Thomas P. Simon, editor(s)
2003, Book chapter, Biological response signatures: Indicator patterns using aquatic communities
Most national parks were designated to preserve significant natural resources. Park borders often reflect political rather than ecological boundaries. Consequently, catchments of many streams are only partially within park boundaries, and are therefore subject to land use changes and potential contamination from non-point sources outside the park. The National Park...
Fire behavior during a prescribed experimental fire in desert tortoise habitat on the Parashant National Monument in Pakoon Basin, Arizona
T. C. Esque, S.E. Eckert, D.F. Haines, R.S. Schwartz, C.R. Tracy
2003, Report
No abstract available at this time...
Hyla gratiosa (barking treefrog) intestinal hernia
J.C. Mitchell, D. E. Green
2003, Herpetological Review (34) 230-231
Deformities and malformations in anurans occur in a variety of manifestations (Meteyer 2000. Field Guide to Malformations of Frogs and Toads with Radiographic Interpretations. Biol. Sci. Rep., USGS/BRD/BSR-2000-0005, 18 pp.). Most of those described in the literature are visible externally (e.g., ectromelia, brachydactyly, polydactyly, brachygnathia, kyphosis) (Ouellet et al. 1997....
Processes and rates of sediment and wood accumulation in headwater streams of the Oregon Coast Range, USA
Christine L. May, Robert E. Gresswell
2003, Earth Surface Processes and Landforms (28) 409-424
Channels that have been scoured to bedrock by debris flows provide unique opportunities to calculate the rate of sediment and wood accumulation in low-order streams, to understand the temporal succession of channel morphology following disturbance, and to make inferences about processes associated with input and transport of sediment. Dendrochronology was...
Differences in habitat use by blanding's turtles, Emydoidea blandingii, and painted turtles, Chysemys picta, in the Nebraska sandhills
R. Bruce Bury, David J. Germano
2003, American Midland Naturalist (149) 241-244
We sampled a variety of wetlands in the Nebraska sandhills at Valentine National Wildlife Refuge. Significantly more individuals of painted turtles (Chrysemys picta) occurred in lakes and open waters than in marshes or small ponds, and the opposite was true for Blanding's turtles (Emydoidea blandingii). Besides this marked difference in...
Seasonal patterns in growth, blood consumption, and effects on hosts by parasitic-phase sea lampreys in the Great Lakes: an individual-based model approach
Charles P. Madenjian, Philip A. Cochran, Roger A. Bergstedt
2003, Journal of Great Lakes Research (29) 332-346
An individual-based model (IBM) was developed for sea lamprey (Petromyzon marinus) populations in the Laurentian Great Lakes. The IBM was then calibrated to observed growth, by season, for sea lampreys in northern Lake Huron under two different water temperature regimes: a regime experienced by Seneca-strain lake trout (Salvelinus namaycush) and...
Neotropical migratory bird monitoring study at Marine Corps Base Camp Pendleton, California. 2002 Annual Report. Prepared for Assistant Chief of Staff, Environmental Security, Marine Corps Base Camp Pendleton
B.E. Kus, D.A. Kisner
2003, Report
No abstract available at this time...
Estimating parasitic sea lamprey abundance in Lake Huron from heterogenous data sources
Robert J. Young, Michael L. Jones, James R. Bence, Rodney B. McDonald, Katherine M. Mullett, Roger A. Bergstedt
2003, Journal of Great Lakes Research (29) 214-225
The Great Lakes Fishery Commission uses time series of transformer, parasitic, and spawning population estimates to evaluate the effectiveness of its sea lamprey (Petromyzon marinus) control program. This study used an inverse variance weighting method to integrate Lake Huron sea lamprey population estimates derived from two estimation procedures: 1) prediction...
Effects of contaminated dredge spoils on wetland plant communities: A literature review
Paul M. Stewart, Eric L. Garza, Jason T. Butcher
Thomas P. Simon, editor(s)
2003, Book chapter, Biological response signatures: Indicator patterns using aquatic communities
Contaminated dredge spoil is a national concern due to its scope and effects on biota, water quality, and the physical environment. This literature review discusses the effects of contaminated dredge spoils on wetland plant communities. Plant communities naturally shift over time with changing environmental conditions. Addition of toxins and nutrients...
Factors limiting the intertidal distribution of the mangrove species Xylocarpus granatum
J. A. Allen, K. W. Krauss, R.D. Hauff
2003, Oecologia (135) 110-121
The tree species Xylocarpus granatum is commonly described as occurring in the upper intertidal zone of mangrove forests, but mature trees are occasionally found at lower elevations. In the Utwe River basin, on the Pacific island of Kosrae, we investigated the relative importance of several biotic and abiotic factors that...
Evolution of CAM and C4 carbon-concentrating mechanisms
Jon E. Keeley, Philip W. Rundel
2003, International Journal of Plant Sciences (164) 555-577
Mechanisms for concentrating carbon around the Rubisco enzyme, which drives the carbon-reducing steps in photosynthesis, are widespread in plants; in vascular plants they are known as crassulacean acid metabolism (CAM) and C4 photosynthesis. CAM is common in desert succulents, tropical epiphytes, and aquatic plants and is characterized by nighttime fixation...
Comparison of spring measures of length, weight, and condition factor for predicting metamorphosis in two populations of sea lampreys (Petromyzon marinus) larvae
Mary P. Henson, Roger A. Bergstedt, Jean V. Adams
2003, Journal of Great Lakes Research (29) 204-213
The ability to predict when sea lampreys (Petromyzon marinus) will metamorphose from the larval phase to the parasitic phase is essential to the operation of the sea lamprey control program. During the spring of 1994, two populations of sea lamprey larvae from two rivers were captured, measured, weighed, implanted with...
Is disease increasing or decreasing, and does it impact or maintain biodiversity?
K. D. Lafferty
2003, Journal of Parasitology (89) S101-S105
Distribution, abundance, and breeding activities of the southwestern willow flycatcher at Marine Corps Base Camp Pendleton, California. 2002 Annual Report
B.E. Kus, K.E. Kenwood
2003, Report
No abstract available at this time...
Tracking spring migration of northern pintails with satellite telemetry
M. R. Miller, John Y. Takekawa, D.L. Orthmeyer, J. P. Fleskes, Michael L. Casazza, M.W. Perry
2003, Report
No abstract available at this time...
Application of ecological criteria in selecting marine reserves and developing reserve networks
Callum M. Roberts, George Branch, Rodrigo H. Bustamante, Juan Carlos Castilla, Jenifer Dugan, Benjamin S. Halpern, Kevin D. Lafferty, Heather Leslie, Deborah McArdle, Mary Ruckelshaus, Robert R. Warner
2003, Ecological Applications (13) 215-228
Marine reserves are being established worldwide in response to a growing recognition of the conservation crisis that is building in the oceans. However, designation of reserves has been largely opportunistic, or protective measures have been implemented (often overlapping and sometimes in conflict) by different entities seeking to achieve different ends....
