Results 41 to 50 of about 5,601 (127)

Assessing the validity of the accelerometry technique for estimating the energy expenditure of diving double-crested cormorants Phalacrocorax auritus [PDF]

, 2011
Over the past few years, acceleration-data loggers have been used to provide calibrated proxies of energy expenditure: The accelerometry technique. Relationships between rate of oxygen consumption and a derivation of acceleration data termed "overall ...
Jones, DR, P. J. Butler, Wilson, R. P., White, C. R., M. R. Enstipp, Halsey, LG; id_orcid, C. R. White, Butler, PJ, Gremillet, D., Martin, GR, Halsey, LG, Martin, Graham, Enstipp, MR, Enstipp, M. R., Butler, P. J., Jones, D. R., White, Craig, G. R. Martin, D. R. Jones, R. P. Wilson, Rory Wilson, White, CR, L. G. Halsey, Gremillet, D, D. Grémillet, Butler, Patrick, Martin, G. R., Wilson, RP, Halsey, L. G.   +28 more
core   +1 more source

Breeding bird response to adaptive multi‐paddock and continuous grazing practices in Southeastern United States

Ecosphere, Volume 15, Issue 12, December 2024.
Abstract Grassland bird populations are declining steeply, reflecting the degradation and loss of native grassland habitats. To assess how grazing management affects declining grassland bird populations, we compared breeding avifaunal communities in adaptive multi‐paddock (AMP) grazed and continuously grazed (CG) pastures in the Southeastern United ...
Michael J. McGraw, Steven I. Apfelbaum, Ry Thompson, Fugui Wang, Michael A. Szuter, Richard Teague, Peter Byck, Russ Conser   +7 more
wiley   +1 more source

Nesting ecology of the double-crested cormorant (Phalacrocorax auritus auritus) on Utah Lake [PDF]

, 1974
Research on the nesting of the Double-crested Cormorant (Phalacrocorax auritus auritus) was undertaken to determine the nesting ecology of the bird on Utah Lake, Utah County, and the possible effects that diking Provo Bay would have on the cormorants ...
Mitchell, Ronald M.
core  

Stock‐specific spatial overlap among seabird predators and Columbia River juvenile Chinook Salmon suggests a mechanism for predation during early marine residence

Marine and Coastal Fisheries, Volume 16, Issue 6, December 2024.
Abstract Objective Because predation is thought to be the primary source of natural mortality for juvenile salmon first entering the ocean, we sought to identify regions where, on average, stock‐specific spatial overlap between the distribution of threatened and endangered juvenile Chinook Salmon Oncorhynchus tshawytscha and abundant fish‐eating ...
Jeannette E. Zamon, Nick Tolimieri, Brandon E. Chasco, Mary E. Hunsicker, Donald M. Van Doornik, Brian J. Burke, David J. Teel, Elizabeth M. Phillips   +7 more
wiley   +1 more source

Conflicting perspectives on ecosystem conservation in a cultivated floodplain: The role of science and the challenge of pluralism in decision‐making in Lac Saint‐Pierre (Quebec, Canada)

Environmental Policy and Governance, Volume 34, Issue 5, Page 476-489, October 2024.
Abstract By generating and explaining facts, science holds an important role in environmental policy decision‐making. However, scientific knowledge is often framed as objective and neutral in policy debates, which can be challenged by stakeholders who have a different view of the issue.
Ann Lévesque, Jean‐François Bissonnette, Aaron Vansintjan, Jérôme Dupras   +3 more
wiley   +1 more source

EL PEZ BAGRE INVASIVO PTERYGOPLICHTHYS PARDALIS (SILURIFORMES: LORICARIIDAE) COMO PARTE DE LA DIETA DEL CORMORAN PHALACROCORAX AURITUS (PHALACROCORACIDAE) EN DOS REGIONES TROPICALES DE MÉXICO [PDF]

, 2018
Th e armored suckermouth catfi sh Pterygoplichthys pardalis (Castelnau 1855) is an invasive fi sh species in several regionsin Mexico, including the fl uvial lagoon systems of the state of Campeche in southeastern and in Mazatlán, Sinaloa innorthwestern ...
Amador-del Ángel, Luis Enrique, López-García, Karina del Carmen, Laff ón-Leal, Sandra Martha, Rodríguez-Santiago, María Amparo, Grano-Maldonado, Mayra Ixchel, Santos Guzmán, Sofía   +5 more
core   +1 more source

Correcting for measurement errors in a long‐term aerial survey with auxiliary photographic data

Ecosphere, Volume 15, Issue 8, August 2024.
Abstract Long‐term, large‐scale monitoring of wildlife populations is an integral part of conservation research and management. However, some traditional monitoring protocols lack the information needed to account for sources of measurement error in data analyses.
Jamie L. Brusa, Matthew T. Farr, Joseph Evenson, Emily Silverman, Bryan Murphie, Thomas A. Cyra, Heather J. Tschaekofske, Kyle A. Spragens, Sarah J. Converse   +8 more
wiley   +1 more source

Factors affecting feed conversion ratios in US commercial catfish production ponds

Journal of the World Aquaculture Society, Volume 55, Issue 3, June 2024.
Abstract Feed conversion ratio (FCR) is widely used as a measure of feed use efficiency in commercial aquaculture production and research. Surprisingly, little work has focused on the factors that affect FCR in plankton‐based, commercial ponds despite the widespread use of FCR as a production metric.
Nathan M. Stone, Carole R. Engle, Ganesh Kumar, Menghe H. Li, Shraddha Hegde, Luke A. Roy, Anita M. Kelly, Larry Dorman, Matthew S. Recsetar   +8 more
wiley   +1 more source

Acoustic telemetry tracking of Coho Salmon smolts released from a community‐run hatchery into a marine inlet reveals low early ocean survival

North American Journal of Fisheries Management, Volume 44, Issue 2, Page 359-376, April 2024.
Abstract Objective Hatcheries are used to help supplement populations of Pacific salmon Oncorhynchus spp. for conservation and fisheries purposes and to provide stewardship opportunities. In British Columbia, small community‐run hatcheries typically focus on the latter and generally do not know the efficacy of their release approaches, unlike larger ...
Adam M. Kanigan, Scott G. Hinch, Andrew G. Lotto, Kamil Szlachta, Stephen D. Johnston, Stephanie A. Lingard   +5 more
wiley   +1 more source

Quantifying impacts of harbor seal Phoca vitulina predation on juvenile Coho Salmon in the Strait of Georgia, British Columbia

Marine and Coastal Fisheries, Volume 16, Issue 1, February 2024.
Abstract Objective Coho Salmon Oncorhynchus kisutch provide an important resource for recreational, commercial, and Indigenous fisheries in the Pacific Northwest. The goal of this study was to improve our understanding of how marine mammal predation may be impacting the survival and productivity of Coho Salmon in the Strait of Georgia, British Columbia.
Benjamin W. Nelson, Murdoch K. McAllister, Andrew W. Trites, Austen C. Thomas, Carl J. Walters   +4 more
wiley   +1 more source