Mission Areas

Ecosystems

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Filter Total Items: 30,701
Year Published: 2016

Female gonadal hormones and reproductive behaviors as key determinants of successful reproductive output of breeding whooping cranes (Grus americana)

Reproductive success of endangered whooping cranes (Grus americana) maintained ex situ is poor. As part of an effort to identify potential causes of poor reproductive success in a captive colony, we used non-invasive endocrine monitoring to assess gonadal and adrenal steroids of bird pairs with various reproductive outcomes and evaluated...

Brown, Megan E; Converse, Sarah J.; Chandler, Jane N.; Shafer, Charles; Brown, Janine L; Keefer, Carol L; Songsasen, Nucharin
Brown, M. E., Converse, S. J., Chandler, J. N., Shafer, C., Brown, J. L., Keefer, C. L., and Songsasen, N., 2016, Female gonadal hormones and reproductive behaviors as key determinants of successful reproductive output of breeding Whooping Cranes (Grus americana): General and Comparative Endocrinology, v. 230-231, p. 158-165.

Year Published: 2016

Developing population models with data from marked individuals

Population viability analysis (PVA) is a powerful tool for biodiversity assessments, but its use has been limited because of the requirements for fully specified population models such as demographic structure, density-dependence, environmental stochasticity, and specification of uncertainties. Developing a fully specified population model from...

Hae Yeong Ryu; Kevin T. Shoemaker; Eva Kneip; Anna Pidgeon; Patricia Heglund; Brooke Bateman; Thogmartin, Wayne E.; Reşit Akçakaya
Ryu, H.R., Shoemaker, K.T., Kneip, E., Pidgeon, A.M., Heglund, P.J., Bateman, B.L., Thogmartin, W.E., Akçakaya, H.R. 2016. Developing population models with data from marked individuals. Biological Conservation. Vol. 197:190-199. DOI: 10.1016/j.biocon.2016.02.031.

Year Published: 2016

Assessing the role of seabirds in the ecology of influenza A viruses

Wild waterbirds, specifically waterfowl, gulls, and shorebirds, are recognized as the primordial reservoir of influenza A viruses (IAVs). However, the role of seabirds, an abundant, diverse, and globally distributed group of birds, in the perpetuation and transmission of IAVs is less clear. Here we summarize published and publicly available data...

Lang, Andrew S.; Lebarbenchon, Camille; Robertson, Gregory J.; Ramey, Andrew M.; Waldenström, Jonas; Wille, Michelle
Lang, A. S., C. J. Lebarbenchon, A. M. Ramey, G. J. Robertson, J. Waldenstrom, and M. Wille. 2016. Assessing the role of seabirds in the ecology of influenza A viruses. Avian Diseases 60(1s):378-386. doi:10.1637/11135-050815-RegR

Year Published: 2016

Demographic outcomes of diverse migration strategies assessed in a metapopulation of tundra swans

Background Migration is a prominent aspect of the life history of many avian species, but the demographic consequences of variable migration strategies have only infrequently been investigated, and rarely when using modern technological and analytical methods for assessing survival, movement patterns, and long-term productivity in the context of...

Ely, Craig R.; Meixell, Brandt W.
Ely, C.R., and Meixell, B.W. 2017 Demographic outcomes of diverse migration strategies assessed in a metapopulation of tundra swans, Movement Ecology: vol. 4 p. 10. doi: 10.1186/s40462-016-0075-8

Year Published: 2016

Developing fish trophic interaction indicators of climate change for the Great Lakes

This project addressed regional climate change effects on aquatic food webs in the Great Lakes. We sought insights by examining Lake Erie as a representative system with a high level of anthropogenic impacts, strong nutrient gradients, seasonal hypoxia, and spatial overlap of cold- and cool-water fish guilds. In Lake Erie and in large embayments...

Kraus, Richard T.; Knight, Carey T.; Gorman, Ann Marie; Kocovsky, Patrick M.; Weidel, Brian C.; Rogers, Mark W.

Year Published: 2016

Federal interagency nature‐like fishway passage design guidelines for Atlantic coast diadromous fishes

The National Marine Fisheries Service (NMFS), the U.S. Geological Survey (USGS) and the U.S. Fish and Wildlife Service (USFWS) have collaborated to develop passage design guidance for use by engineers and other restoration practitioners considering and designing nature‐like fishways (NLFs). The primary purpose of these guidelines is to provide a...

Turek, James; Haro, Alexander J.; Towler, Brett
Turek, J., A. Haro, and B. Towler. 2016. Federal Interagency Naturelike Fishway Passage Design Guidelines for Atlantic Coast Diadromous Fishes. Interagency Technical Memorandum. 47 pp.

Year Published: 2016

To cross or not to cross: modeling wildlife road crossings as a binary response variable with contextual predictors

Roads are significant barriers to landscape-scale movements of individuals or populations of many wildlife taxa. The decision by an animal near a road to either cross or not cross may be influenced by characteristics of the road, environmental conditions, traits of the individual animal, and other aspects of the context within which the decision...

Siers, Shane R.; Reed, Robert N.; Savidge, Julie A.

Year Published: 2016

Assessing predation risks for small fish in a large river ecosystem between contrasting habitats and turbidity conditions

This study examined predation risk for juvenile native fish between two riverine shoreline habitats, backwater and debris fan, across three discrete turbidity levels (low, intermediate, high) to understand environmental risks associated with habitat use in a section of the Colorado River in Grand Canyon, AZ. Inferences are particularly important...

Dodrill, Michael J.; Yard, Mike; Pine, William E.
Dodrill, M.J., Yard, M.D., and Pine, W.E., 2016, Assessing Predation Risks for Small Fish in a Large River Ecosystem between Contrasting Habitats and Turbidity Conditions: The American Midland Naturalist, no.2., v. 125, p. 206-221, http://www.bioone.org/doi/full/10.1674/0003-0031-175.2.206.

Year Published: 2016

The bee microbiome: Impact on bee health and model for evolution and ecology of host-microbe interactions

As pollinators, bees are cornerstones for terrestrial ecosystem stability and key components in agricultural productivity. All animals, including bees, are associated with a diverse community of microbes, commonly referred to as the microbiome. The bee microbiome is likely to be a crucial factor affecting host health. However, with the exception...

Engel, Philipp; Kwong, Waldan K.; McFrederick, Quinn; Anderson, Kirk E.; Barribeau, Seth Michael; Chandler, James Angus; Cornman, Robert S.; Dainat, Jacques; de Miranda, Joachim R.; Doublet, Vincent; Emery, Olivier; Evans, Jay D.; Farinelli, Laurent; Flenniken, Michelle L.; Granberg, Fredrik; Grasis, Juris A.; Gauthier, Laurent; Hayer, Juliette; Koch, Hauke; Kocher, Sarah; Martinson, Vincent G.; Moran, Nancy; Munoz-Torres, Monica; Newton, Irene; Paxton, Robert J.; Powell, Eli; Sadd, Ben M.; Schmid-Hempel, Paul; Schmid-Hempel, Regula; Song, Se Jin; Schwarz, Ryan S.; vanEngelsdorp, Dennis; Dainat, Benjamin
mBio vol. 7 no. 2 e02164-15

Year Published: 2016

Spatial and temporal patterns of mercury concentrations in freshwater fish across the Western United States and Canada

Methylmercury contamination of fish is a global threat to environmental health. Mercury (Hg) monitoring programs are valuable for generating data that can be compiled for spatially broad syntheses to identify emergent ecosystem properties that influence fish Hg bioaccumulation. Fish total Hg (THg) concentrations were evaluated across the Western...

Eagles-Smith, Collin A.; Ackerman, Joshua T.; Willacker, James J.; Tate, Michael T.; Lutz, Michelle A; Fleck, Jacob; Stewart, Robin; Wiener, James G.; Evers, David C.; Lepak, Jesse M.; Davis, Jay A.; Pritz, Colleen Flanagan
Eagles-Smith, C.A., Ackerman, J.T., Willacker, J.J., Tate, M., Lutz, M., Fleck, J.A., Stewart, A.R., Wiener, J.G., Evers, D.C., Lepak, J.M., Davis, J.A., and Pritz, C.F., 2016, Spatial and temporal patterns of mercury concentrations in freshwater fish across the Western United States and Canada: Science of the Total Environment, p. 1171-1184, https://doi.org/10.1016/j.scitotenv.2016.03.229.

Year Published: 2016

Carbon dioxide as a tool to deter the movement of invasive bigheaded carps

Nonnative bigheaded carps are established in the Mississippi River and there is substantial concern about their potential entry into the interconnected Laurentian Great Lakes. While electrical barriers currently exist as a preventative measure, there is need for additional control mechanisms to promote barrier security through redundancy. We...

Michael R. Donaldson; Amberg, Jon J.; Shivani Adhikari; Cupp, Aaron R.; Jensen, Nathan; Romine, Jason G.; Adam Wright; Gaikowski, Mark P.; Cory D. Suski

Year Published: 2016

Fluctuating water depths affect American alligator (Alligator mississippiensis) body condition in the Everglades, Florida, USA

Successful restoration of wetland ecosystems requires knowledge of wetland hydrologic patterns and an understanding of how those patterns affect wetland plant and animal populations.Within the Everglades, Florida, USA restoration, an applied science strategy including conceptual ecological models linking drivers to indicators is being used to...

Brandt, Laura A.; Beauchamp, Jeffrey S.; Jeffery, Brian M.; Cherkiss, Michael S.; Mazzotti, Frank J.
Brandt, L.A., Beauchamp, J.S., Jeffery, B.M., Cherkiss, M.S., and Mazzotti, F.J., 2016, Fluctuating water depths affect American alligator (Alligator mississippiensis) body condition in the Everglades, Florida, USA: Ecological Indicators, v. 67, p. 441-450, http://dx.doi.org/10.1016/j.ecolind.2016.03.003 or http://www.sciencedirect.com/science/article/pii/S1470160X16301078.