Results 1 to 10 of about 4,195 (192)

Isotopic Discrimination in the Double-Crested Cormorant (Phalacrocorax auritus). [PDF]

PLoS ONE, 2015
The diet-tissue discrimination factor is the amount by which a consumer's tissue varies isotopically from its diet, and is therefore a key element in models that use stable isotopes to estimate diet composition.
Elizabeth C Craig, Brian S Dorr, Katie C Hanson-Dorr, Jed P Sparks, Paul D Curtis   +4 more
doaj   +5 more sources

Seasonal climatic niche and migration movements of Double‐crested Cormorants [PDF]

Ecology and Evolution, 2022
Avian migrants are challenged by seasonal adverse climatic conditions and energetic costs of long‐distance flying. Migratory birds may track or switch seasonal climatic niche between the breeding and non‐breeding grounds. Satellite tracking enables avian
D. Tommy King, Guiming Wang, Fred L. Cunningham   +2 more
doaj   +4 more sources

Long term changes in aquaculture influence migration, regional abundance, and distribution of an avian species. [PDF]

PLoS ONE, 2023
Agricultural development has been causing changes to the environment and the abundance and distribution of avian species. Agriculture is dynamic with changes in products occurring at large scales over relatively short time periods.
Paul C Burr, Brian S Dorr, Jimmy L Avery, Garrett M Street, Bronson K Strickland   +4 more
doaj   +3 more sources

Tracking the History and Ecological Changes of Rising Double-Crested Cormorant Populations Using Pond Sediments from Islands in Eastern Lake Ontario. [PDF]

PLoS ONE, 2015
In the Laurentian Great Lakes region, the double-crested cormorant (Phalacrocorax auritus) has seen a thousand-fold population increase in recent decades.
Emily M Stewart, Neal Michelutti, Sarah Shenstone-Harris, Christopher Grooms, Chip Weseloh, Linda E Kimpe, Jules M Blais, John P Smol   +7 more
doaj   +2 more sources

Data of soil, vegetation and bird species found on double-crested cormorant colonies in the southeastern United States [PDF]

Data in Brief, 2019
This data article provides the methods and procedures followed to collect and analyse soil, vegetation and bird data on three different treatment islands in Guntersville Reservoir, Alabama.
Leah Moran Veum, Brian S. Dorr, Katie Hanson-Dorr, R.J. Moore, Scott A. Rush   +4 more
doaj   +2 more sources

Amino acid-specific isotopes reveal changing five-dimensional niche segregation in Pacific seabirds over 50 years [PDF]

Scientific Reports
Hutchison’s niche theory suggests that coexisting competing species occupy non-overlapping hypervolumes, which are theoretical spaces encompassing more than three dimensions, within an n-dimensional space.
Francis van Oordt, Antonio Cuba, Emily S. Choy, John E. Elliott, Kyle H. Elliott   +4 more
doaj   +2 more sources

Development and characterization of a double-crested cormorant hepatic cell line, DCH22, for chemical screening [PDF]

Frontiers in Toxicology
There are currently no available cell lines for the ecologically relevant colonial waterbird species, the double-crested cormorant (DCCO). DCCOs are high trophic level aquatic birds that are used for routine contaminant monitoring programs in the ...
Tasnia Sharin, Doug Crump, Jason M. O’Brien   +2 more
doaj   +2 more sources

Population trends of seabirds in Mexican Islands at the California Current System. [PDF]

PLoS ONE, 2022
The Baja California Pacific Islands (BCPI) is a seabird hotspot in the southern California Current System supporting 129 seabird breeding populations of 23 species and over one million birds annually.
Federico Méndez Sánchez, Yuliana Bedolla Guzmán, Evaristo Rojas Mayoral, Alfonso Aguirre-Muñoz, Patricia Koleff, Alejandro Aguilar Vargas, Fernando Álvarez Santana, Gustavo Arnaud, Alicia Aztorga Ornelas, Luis Felipe Beltrán Morales, Maritza Bello Yáñez, Humberto Berlanga García, Esmeralda Bravo Hernández, Ana Cárdenas Tapia, Aradit Castellanos Vera, Miguel Corrales Sauceda, Ariana Duarte Canizales, Alejandra Fabila Blanco, María Félix Lizárraga, Anely Fernández Robledo, Julio César Hernández Montoya, Alfonso Hernández Ríos, Eduardo Iñigo-Elias, Ángel Méndez Rosas, Braulio Rojas Mayoral, Fernando Solís Carlos, Alfredo Ortega-Rubio   +26 more
doaj   +2 more sources

Holding a wing horizontal: Roles for muscles of the pectoral girdle other than the main two flight muscles. [PDF]

J Anat
This report explores which muscles of the pectoral girdle are employed to allow birds to hold their wings horizontally with a level aerofoil surface during a glide. Abstract Whilst many birds glide briefly with wings held horizontally, some species maintain this posture for extended periods during soaring.
Deeming DC, Mosto MC.
europepmc   +2 more sources

Assessing Biodiversity at Eastern Oyster (<i>Crassostrea virginica</i>) Aquaculture and Reef Sites Utilizing Real-Time Monitoring and Environmental DNA in Rehoboth Bay, Delaware, USA. [PDF]

Ecol Evol
Eastern oysters (Crassostrea virginica) are a keystone species and vital to the commercial shellfish industry, acting as environmental engineers that enhance biodiversity. To study their impact, real‐time monitoring and Environmental DNA analysis were conducted at various sites in Rehoboth Bay, Delaware and 23 species were identified, with Spot ...
Attarwala T, Parsaeimehr A, Ozbay G.
europepmc   +2 more sources