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Absence of canonical trophic levels in a microbial mat
Geobiology, 2022 AbstractIn modern ecosystems, the carbon stable isotope (δ13C) ratios of consumers generally conform to the principle “you are what you eat, +1‰.” However, this metric may not apply to microbial mat systems where diverse communities, using a variety of carbon substrates via multiple assimilation pathways, live in close physical association and ...
Ana C. Gonzalez‐Nayeck +6 more
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Can biomass distribution across trophic levels predict trophic cascades? [PDF]
Ecology Letters, 2020 Abstract The biomass distribution across trophic levels (biomass pyramid) and cascading responses to perturbations (trophic cascades) are archetypal representatives of the interconnected set of static and dynamical properties of food chains.
Galiana, Núria +5 more
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Effect of zooplankton-mediated trophic cascades on marine microbial food web components (bacteria, nanoflagellates, ciliates) [PDF]
, 2009 To examine the grazing effects of copepod-dominated mesozooplankton on heterotrophic microbial communities, four mesocosm experiments using gradients of zooplankton abundance were carried out at a coastal marine site.
Hoppe, Hans-Georg +3 more
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Ecosphere, 2016 Given current levels of biodiversity loss and environmental change, studies of how food webs respond to disturbance should broaden their focus beyond short‐term disturbances to explore the effects of long‐term, “press” disturbances.
K. L. Wootton, D. B. Stouffer
doaj +1 more source
The Food Web of Potter Cove (Antarctica): complexity, structure and function [PDF]
, 2018 Knowledge of the food web structure and complexity are central to better understand ecosystem functioning. A food-web approach includes both species and energy flows among them, providing a natural framework for characterizing species’ ecological roles ...
Barrera Oro, Esteban +14 more
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Persistence of complex food webs in metacommunities [PDF]
, 2012 Metacommunity theory is considered a promising approach for explaining species diversity and food web complexity. Recently Pillai et al. proposed a simple modeling framework for the dynamics of food webs at the metacommunity level.
Böhme, Gesa A., Gross, Thilo
core +1 more source
Establishing macroecological trait datasets: digitalization, extrapolation, and validation of diet preferences in terrestrial mammals worldwide [PDF]
, 2014 Ecological trait data are essential for understanding the broad-scale distribution of biodiversity and its response to global change. For animals, diet represents a fundamental aspect of species’ evolutionary adaptations, ecological and functional roles,
Dalby, Lars +7 more
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Nitrogen isotope composition of amino acids reveals trophic partitioning in two sympatric amphipods
Ecology and Evolution, 2020 According to ecological theory, two species cannot occupy the same niche. Using nitrogen isotope analyses (δ15N) of amino acids, we tested the extent to which two sympatric deposit‐feeding amphipods, Monoporeia affinis and Pontoporeia femorata, partition
Matias Ledesma +4 more
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Fishes, 2021 Aquatic organisms, such as fish, are important indicators of the bioavailability of metals in coastal environments, demonstrating the capacity of different species to bioaccumulate these metallic elements.
María del Refugio Castañeda-Chávez +3 more
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Trophic levels of fish species of commercial importance in the Colombian Caribbean
Revista de Biología Tropical, 2011 Ecological studies on commercial important fish species are of great value to support resource management issues. This study calculated trophic levels of those Colombian Caribbean fish species whose diet has been locally described.
Camilo B García +1 more
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