Results 81 to 90 of about 592,485 (188)

Stable Isotopes from Museum Specimens May Provide Evidence of Long-Term Change in the Trophic Ecology of a Migratory Aerial Insectivore

Frontiers in Ecology and Evolution, 2018
Identifying the mechanisms of ecological change is challenging in the absence of long-term data, but stable isotope ratios of museum specimen tissues may provide a record of diet and habitat change through time.
Philina A. English, D. Green, J. Nocera
semanticscholar   +1 more source

Trophic ecology of a taxocenosis of mediterranean Lacertidae

Ecologia mediterranea, 1988
L’étude de 557 exemplaires de Psammodromus algirus, Acanthodactylus erythrurus et Psammodromus hispanicus dans une "dehesa" de Quercus rotundi folia dans la province de Sala¬ manque (Espagne) et les données sur la disponibilité trophique mesurée dans les mêmes localités ont permis de caractériser l'alimentation de ces trois espèces ainsi que d'étudier ...
Pollo, César J., Perez-Mellado, Valentı́n   +1 more
openaire   +2 more sources

Trophic ecology of marine fish

Fish represent the most diverse and abundant group of vertebrates on Earth, and as such, the diversity of trophic strategies observed in marine fishes is outstanding. Morphology can inform about species trophic ecology according to the "ecomorphology" hypothesis, which is firstly described in the chapter. Second, some of the multiple other methods used
Carassou, Laure, Benhaïm, David, Vagner, Marie, Lobry, Jérémy   +3 more
openaire   +4 more sources

Spatial variation, more than ontogenetic, explains the diet of Bryconamericus exodon in two Pantanal rivers

Acta Limnologica Brasiliensia
Aim Studies of natural variations in fish diet allow, in turn, a better understanding of environmental changes along the hydrological cycle that can affect resources and, hence, biodiversity conservation.
Karoline Aparecida de Sena, Yzel Rondon Súarez   +1 more
doaj   +1 more source

Land Use Influences Niche Size and the Assimilation of Resources by Benthic Macroinvertebrates in Tropical Headwater Streams.

PLoS ONE, 2016
It is well recognized that assemblage structure of stream macroinvertebrates changes with alterations in catchment or local land use. Our objective was to understand how the trophic ecology of benthic macroinvertebrate assemblages responds to land use ...
Diego Marcel Parreira de Castro, Débora Reis de Carvalho, Paulo dos Santos Pompeu, Marcelo Zacharias Moreira, Gabriela Bielefeld Nardoto, Marcos Callisto   +5 more
doaj   +1 more source

Fins are relevant non-lethal surrogates for muscle to measure stable isotopes in amphibians

Knowledge and Management of Aquatic Ecosystems, 2019
Stable isotope analyses (SIA) are now widely used in ecology research to quantify the trophic implications of a large range of ecological processes.
Bélouard Nadège, Petit Eric J., Huteau Dominique, Oger Adrien, Paillisson Jean-Marc   +4 more
doaj   +1 more source

Insights on long-term ecosystem changes from stable isotopes in historical squid beaks

BMC Ecology and Evolution
Background Assessing the historical dynamics of key food web components is crucial to understand how climate change impacts the structure of Arctic marine ecosystems.
Alexey V. Golikov, José C. Xavier, Filipe R. Ceia, José P. Queirós, Paco Bustamante, Bram Couperus, Gaël Guillou, Anna M. Larionova, Rushan M. Sabirov, Christopher J. Somes, Henk-Jan Hoving   +10 more
doaj   +1 more source

Emergent competition shapes top-down versus bottom-up control in multi-trophic ecosystems.

PLoS Computational Biology
Ecosystems are commonly organized into trophic levels-organisms that occupy the same level in a food chain (e.g., plants, herbivores, carnivores). A fundamental question in theoretical ecology is how the interplay between trophic structure, diversity ...
Zhijie Feng, Robert Marsland, Jason W Rocks, Pankaj Mehta   +3 more
doaj   +1 more source

Experimental reduction of land use increases invertebrate abundance in grasslands

Basic and Applied Ecology
Grasslands are diverse ecosystems that are increasingly threatened by intensive land use. Restoring grasslands by reducing land-use intensity may support insect abundance and diversity, helping to halt insect declines.
Michael Staab, Alexander Keller, Rafael Achury, Andrea Hilpert, Norbert Hölzel, Daniel Prati, Wolfgang W. Weisser, Nico Blüthgen   +7 more
doaj   +1 more source

Geographical, temporal, and individual-based differences in the trophic ecology of female Cape fur seals. [PDF]

Ecol Evol, 2023
Botha JA, Trueman CN, Kirkman SP, Arnould JPY, Lombard AT, Connan M, Hofmeyr GJG, Seakamela SM, Pistorius PA.   +8 more
europepmc   +1 more source