Results 11 to 20 of about 456,694 (300)

Extreme events, trophic chain reactions, and shifts in phenotypic selection

Scientific Reports, 2022
AbstractDemographic consequences of rapid environmental change and extreme climatic events (ECEs) can cascade across trophic levels with evolutionary implications that have rarely been explored. Here, we show how an ECE in high Arctic Svalbard triggered a trophic chain reaction, directly or indirectly affecting the demography of both overwintering and ...
Kate Layton-Matthews, Stefan Vriend, Vidar Grotan, Maarten Loonen, Bernt-Erik Sæther, Eva Fuglei, Brage Bremset Hansen   +6 more
openaire   +3 more sources

Trophic niche divergence among colour morphs that exhibit alternative mating tactics [PDF]

Royal Society Open Science, 2016
Discrete colour morphs associated with alternative mating tactics are assumed to be ecologically equivalent. Yet suites of behaviours linked with reproduction can also favour habitat segregation and exploitation of different prey among morphs.
Matthew S. Lattanzio, Donald B. Miles
doaj   +1 more source

Feeding and growth variations affect δ13C and δ15N budgets during ontogeny in a lepidopteran larva

Peer Community Journal, 2023
Isotopes are widely used in ecology to study food webs and physiology. The fractionation observed between trophic levels in nitrogen and carbon isotopes, explained by isotopic biochemical selectivity, is subject to important within-trophic level ...
Charberet, Samuel M., Maria, Annick, Siaussat, David, Gounand, Isabelle, Mathieu, Jérôme   +4 more
doaj   +1 more source

A geographic mosaic of trophic interactions and selection: trees, aphids and birds [PDF]

Journal of Evolutionary Biology, 2010
AbstractGenetic variation in plants is known to influence arthropod assemblages and species interactions. However, these influences may be contingent upon local environmental conditions. Here, we examine how plant genotype‐based trophic interactions and patterns of natural selection change across environments.
D S, Smith, J K, Bailey, S M, Shuster, T G, Whitham   +3 more
openaire   +2 more sources

Predator-prey dynamics driven by feedback between functionally diverse trophic levels. [PDF]

PLoS ONE, 2011
Neglecting the naturally existing functional diversity of communities and the resulting potential to respond to altered conditions may strongly reduce the realism and predictive power of ecological models.
Katrin Tirok, Barbara Bauer, Kai Wirtz, Ursula Gaedke   +3 more
doaj   +1 more source

Selective consumption of rodents by the Variable hawk Geranoaetus polyosoma (Accipitriformes: Accipitridae) in the Atacama Desert, northern Chile [PDF]

Zoologia (Curitiba), 2020
Geranoaetus polyosoma (Quoy & Gaimard, 1824) is a diurnal raptor widely distributed in South America. Although the trophic ecology of this bird has been more studied in the southern extreme of its range, little information is available on its ...
Andrés Muñoz-Pedreros, Heraldo Norambuena, Claudia Gil, Jaime Rau   +3 more
doaj   +3 more sources

Impacts on biodiversity from codend and fisher selection in bottom trawl fishing

Frontiers in Marine Science, 2022
Fisheries have important impacts on marine biodiversity. In this work, combined information on the abundance, species richness, diversity indices, species composition, trophic level and vulnerability index were examined for the first-time to detect ...
Chryssi Mytilineou, Chryssi Mytilineou, Bent Herrmann, Bent Herrmann, Bent Herrmann, Christopher J. Smith, Danai Mantopoulou-Palouka, Aikaterini Anastasopoulou, Apostolos Siapatis, Antonello Sala, Persefoni Megalofonou, Nadia Papadopoulou, Vassiliki Vassilopoulou, Caterina Stamouli, Stefanos Kavadas, Evgenia Lefkaditou, Artemis Nicolaidou   +16 more
doaj   +1 more source

A Midsummer Night’s Diet: Snapshot on Trophic Strategy of the Alpine Salamander, Salamandra atra

Diversity, 2020
Information on the trophic ecology of the Alpine salamander, Salamandra atra, is scattered and anecdotal. We studied for the first time the trophic niche and prey availability of a population from an area located in Italian Dolomites during the first ...
Luca Roner, Andrea Costa, Paolo Pedrini, Giorgio Matteucci, Stefano Leonardi, Antonio Romano   +5 more
doaj   +1 more source

Trophic ecology of Acestrorhynchus falcirostris Cuvier, 1819 in island lakes on the lower stretch of the Solimões River, Amazon Basin

Brazilian Journal of Biology, 2022
The aim objective of this study was to determine the trophic ecology of juvenile and adult Acestrorhynchus falcirostris during the rising and flood (high-water) period in six island lakes adjacent to the Solimões River.
C. Lubich, J. Aguiar-Santos, F. Corrêa, C. E. C. Freitas, F. K. Siqueira-Souza   +4 more
doaj   +1 more source

Effects of silver, gold and platinum nanoparticles on selected nematode trophic groups

Journal of Horticultural Research, 2023
Abstract Nematodes represent different trophic groups in the soil. They therefore play an important role in the soil environment: they regulate populations of other soil organisms, mineralize nutrients into plant-available forms, provide a source of food for other soil organisms and feed on pathogenic organisms and plant pests.
Magdalena Dzięgielewska, Andrzej Skwiercz, Anna Wesołowska, Dawid Kozacki, Włodzimierz Przewodowski, Danuta Kulpa   +5 more
openaire   +2 more sources