Results 31 to 40 of about 901,724 (295)

Diet of the exotic Rainbow Trout in the critical habitat of the threatened Hooded Grebe

open access: yesKnowledge and Management of Aquatic Ecosystems, 2015
The lakes of the basaltic plateaus of Patagonia represent the only reproductive habitat for the critically endangered Hooded Grebe (Podiceps gallardoi).
Lancelotti J. L.   +2 more
doaj   +1 more source

Comparison of Dietary Overlap between Allopatric and Sympatric Geckos

open access: yesJournal of Herpetology, 1994
Two gecko species, Hemidactylus turcicus and Cyrtopodion scabrum, have been introduced into the Port of Galveston, Texas. While H. turcicus has been established for a longer period of time, the relatively recent introduction of C. scabrum near the entrance of the Port has apparently led to the displacement of H. turcicus in that area. This has resulted
Klawinski, Paul D   +3 more
openaire   +2 more sources

The winter diet of the rare Tyto alba in contrast to Asio otus on Crimea Peninsula

open access: yesNature Conservation Research: Заповедная наука, 2020
The range of Tyto alba overlaps with that of Asio otus in a large part of the Holarctic. Both species are adapted to open-area hunting and prey upon similar species. In contrast to A. otus, data about the diet of T.
Volodymyr M. Kucherenko   +4 more
doaj   +1 more source

A Dietary Overlap of Evening Grosbeaks and Carolina Parakeets

open access: yes, 1983
(Uploaded by Plazi from the Biodiversity Heritage Library) No abstract provided.
Brunswig, Norman L   +2 more
openaire   +2 more sources

Invasive carps vs. native fish: a first-pass trait-based index for assessing competition threats

open access: yesFrontiers in Freshwater Science
IntroductionBigheaded carp (Hypophthalmichthys spp.) are invasive fish in the Mississippi River basin. Their rapid proliferation has raised concerns about exploitative competition with native fishes, with consequences that remain incompletely understood.
Leandro E. Miranda   +1 more
doaj   +1 more source

Feeding Ecology and Trophic Overlap of Sympatric Rajidae Species in the Eastern Ionian Sea (Central Mediterranean)

open access: yesFishes
The feeding ecology of sympatric elasmobranchs provides key insights into trophic interactions and species coexistence within demersal ecosystems. The current study examined the diet composition and trophic relationships of three skate species (Raja ...
Archontia Chatzispyrou   +4 more
doaj   +1 more source

Interannual Variation in Diet, Dietary Diversity, and Dietary Overlap in Three Sympatric Strepsirrhine Species in Southeastern Madagascar [PDF]

open access: yesInternational Journal of Primatology, 2018
Dietary data are used to categorize species diets, but these categorizations do not take into account the mutability of food resources in time or space, the level of interspecific competition in various communities as these resources change, nor the dietary flexibility of species.
E. M. Erhart, S. R. Tecot, C. Grassi
openaire   +1 more source

Seasonal variation in fish trophic networks in two clear-water streams in the Central Llanos region, Venezuela

open access: yesNeotropical Ichthyology, 2017
Food webs are not static entities; consumer resource interactions vary in both time and space, which complicates depiction and comparisons of food web structures.
Christopher C. Peterson   +4 more
doaj   +1 more source

Fruit, vegetable and dietary carotenoid intakes explain variation in skin-color in young caucasian women : a cross-sectional study [PDF]

open access: yes, 2015
This work was supported by a scholarship top-up grant from HMRI. Kristine Pezdirc is supported by an Australian Postgraduate Awards scholarship. Melinda Hutchesson is supported by a Postdoctoral Fellowship (100177) from the National Heart Foundation of ...
Hutchesson, Melinda J.   +13 more
core   +1 more source

Dietary Analysis of Commercial Fish (Families Mullidae and Sparidae) from Bay of Cádiz, Southern Spain: An Integrative Approach

open access: yesFishes
A combination of stomach contents analysis (SCA) and nitrogen (δ15N) and carbon (δ13C) stable isotope analysis (SIA) was used to assess the trophic structure of nine fish species (two belonging to the family Mullidae, Mullus barbatus and Mullus ...
José Manuel Guerra-García   +4 more
doaj   +1 more source

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