Results 1 to 10 of about 413 (130)

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

open access: yesPLoS 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   +4 more
doaj   +5 more sources

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

open access: yesPLoS 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   +26 more
doaj   +2 more sources

Host Range of Carp Edema Virus (CEV) during a Natural Mortality Event in a Minnesota Lake and Update of CEV Associated Mortality Events in the USA [PDF]

open access: yesViruses, 2021
Mass mortality events of common carp (Cyprinus carpio, carp) associated with carp edema virus (CEV) alone or in coinfections with koi herpesvirus (KHV), is an emerging issue.
Isaiah E. Tolo   +5 more
doaj   +2 more sources

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

open access: yesScientific 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   +4 more
doaj   +2 more sources

Hematology and serum chemistry of captive juvenile double-crested cormorants (Phalacrocorax auritus). [PDF]

open access: yesCan Vet J, 1999
Hematologic and serum chemical values were obtained for double-crested cormorants (Phalacrocorax auritus) to improve clinical diagnosis of disease in this species. Blood samples were collected from 20 captive double-crested cormorants at 4 to 6 weeks of age. Hematocrit and leukocyte concentrations were determined in heparinized blood. Concentrations of
Kuiken T, Danesik KL.
europepmc   +2 more sources

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

open access: yesPLoS 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   +7 more
doaj   +1 more source

Capture and telemetry techniques for double-crested cormorants (Phalacrocorax auritus) [PDF]

open access: yesProceedings of the Vertebrate Pest Conference, 2000
Author(s): King, D. Tommy; Tobin, Mark E. | Abstract: Double-crested Cormorants (Phalacrocorax auritus) often roost in cypress oxbows and nest on islands making their capture for research studies difficult. In the southeastern United States we used a capture technique involving a boat equipped with flood lights, flushing the birds out of their roost ...
King, D. Tommy, Tobin, Mark E.
openaire   +3 more sources

The Effect of Breathing Oxygen and Air on Diving Bradycardia in Cormorants (Phalacrocorax Auritus) [PDF]

open access: yesJournal of Experimental Biology, 1988
ABSTRACT Cardiovascular chemoreceptors are crucial for the development of forced diving responses in dabbling ducks such as the mallard (Anas platyrhynchos). Denervation of the peripheral chemoreceptors or allowing the duck to breath 100 % oxygen before a forced dive eliminates or considerably delays the onset of noticeable bradycardia ...
D R, Jones, S, Larigakis
openaire   +2 more sources

Fisheries restoration potential for a large lake ecosystem: using ecosystem models to examine dynamic relationships between walleye, cormorant, and perch

open access: yesEcology and Society, 2015
Increased population sizes of Double-crested Cormorants (Phalacrocorax auritus) and small-bodied (
Andrea M. McGregor   +3 more
doaj   +1 more source

Modeling the Economic Impacts of Double-Crested Cormorant Damage to a Recreational Fishery

open access: yesHuman-Wildlife Interactions, 2017
The double-crested cormorant (Phalacrocorax auritus) has undergone a significant range expansion in the Great Lakes area of the United States since the 1970s, negatively impacting native fish populations and sport fisheries.
Stephanie A. Shwiff   +3 more
doaj   +1 more source

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