Results 11 to 20 of about 83,565 (267)
Trophic Ecology of Deep-Sea Megafauna in the Ultra-Oligotrophic Southeastern Mediterranean Sea
Frontiers in Marine Science, 2022 The trophic ecology of fourteen species of demersal fishes and six species of demersal decapod crustaceans from the continental slope and rise of the Southeastern Mediterranean Sea (SEMS) was examined using stable isotope analysis. Mean δ13C values among
Tamar Guy-Haim +2 more
doaj +1 more source
Plant genetic diversity affects multiple trophic levels and trophic interactions
Nature Communications, 2022 Abstract Intraspecific genetic diversity is an important component of biodiversity. A substantial body of evidence has demonstrated positive effects of plant genetic diversity on plant performance. However, it has remained unclear whether plant genetic diversity generally increases plant performance by reducing the pressure of plant ...
Nian-Feng Wan +6 more
openaire +4 more sources
Estimating Trophic Levels and Trophic Magnification Factors Using Bayesian Inference [PDF]
Environmental Science & Technology, 2013 Food web biomagnification is increasingly assessed by estimating trophic magnification factors (TMF) where solvent (often lipid) normalized contaminant concentration is regressed onto the trophic level, and TMFs are represented by the slope of the relationship.
Starrfelt, Jostein +3 more
openaire +3 more sources
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. +4 more
doaj +1 more source
The evolution of the human trophic level during the Pleistocene [PDF]
American Journal of Physical Anthropology, 2021 AbstractThe human trophic level (HTL) during the Pleistocene and its degree of variability serve, explicitly or tacitly, as the basis of many explanations for human evolution, behavior, and culture. Previous attempts to reconstruct the HTL have relied heavily on an analogy with recent hunter‐gatherer groups' diets.
Miki Ben‐Dor +2 more
openaire +2 more sources
Marine and Fishery Sciences, 2021 Food habits and diet composition of Patagonian flounder Paralichthys patagonicus (Jordan, 1889) were studied on the basis of stomach content analyses from 828 specimens (512 females, 304 males, 12 unsexed) collected during 16 commercial cruises between ...
Gonzalo H. Troccoli +4 more
doaj +1 more source
Frontiers in Water, 2021 Streams and rivers are globally threatened ecosystems because of increasing levels of exploitation, habitat degradation and other anthropogenic pressures.
Alfred O. Achieng +6 more
doaj +1 more source
Structural changes within trophic levels are constrained by within‐family assembly rules at lower trophic levels [PDF]
Ecology Letters, 2018 AbstractHistorical contingency broadly refers to the proposition that even random historical events can constrain the ecological and evolutionary pathways of organisms and that of entire communities. Focusing on communities, these pathways can be reflected into specific structural changes within and across trophic levels – how species interact with and
Song, Chuliang +3 more
openaire +6 more sources
Scientia Marina, 2019 Mean temperature (MTC) and mean trophic level (MTL) spatiotemporal patterns of MEDITS survey catches were examined in 13 geographic statistical areas (GSAs) of the Mediterranean between 1994 and 2016.
Panagiota Peristeraki +11 more
doaj +1 more source
Foods, 2023 Bioaccumulation is the process by which living organisms accumulate substances, such as pesticides, heavy metals, and other pollutants, from their environment.
Enrique Lozano-Bilbao +7 more
doaj +1 more source