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Trophic field overlap: A new approach to quantify keystone species
Ecological Modelling, 2009It is a current challenge to better understand the relative importance of species in ecosystems, and the network perspective is able to offer quantitative tools for this. It is plausible to assume, in general, that well-linked species, being key interactors, are also more important for the community. Recently a number of methods have been suggested for
Ferenc Jordán +2 more
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Science of the Total Environment
Plastic pollution is a global challenge that affects all marine ecosystems, and reflects all types of uses and activities of human society in these environments. In marine ecosystems, microplastics and mesoplastics interact with invertebrates and become available to higher predators, such as fish, which can ingest these contaminants.
Rodrigo Machado +2 more
exaly +3 more sources
Plastic pollution is a global challenge that affects all marine ecosystems, and reflects all types of uses and activities of human society in these environments. In marine ecosystems, microplastics and mesoplastics interact with invertebrates and become available to higher predators, such as fish, which can ingest these contaminants.
Rodrigo Machado +2 more
exaly +3 more sources
Diet and trophic niche overlap of two ranid species in northern Italy
Italian Journal of Zoology, 2000Abstract Diet of two syntopic populations of Rana dalmatina and R. synklepton esculenta were studied in order to collect data about competition and niche overlap in relation to habitats frequented. Field observations confirm previous ecological researches and show that the former species has a short aquatic phase during the mating period; it lives in ...
Franca Guidali +2 more
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Modelling and mapping trophic overlap between fisheries and the world’s seabirds
2009Seabird food consumption may reveal the potential for competition between seabirds and fisheries. I ndeed, coexistence of foraging seabirds and operating fisheries inevitably results in interactions, one of which is competition for the same resources. I used GIS-based modelling at a scale of 30-min spatial cells to: (a) map the foraging distribution of
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High trophic niche overlap within the aquatic carnivore guild in vernal ponds
2022The underlying mechanisms shaping niche size and overlap within and between species are crucial for understanding species coexistence and community assembly. The hunting strategy of and the competition between predators shape their diets, but many species can adjust their niches via trophic or microhabitat differentiation to minimize foraging ...
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Environmental Science and Pollution Research
Benthic amphipod feeding groups are a well-established trophic classification that is mostly based on field observations and laboratory tests and are used in ecological studies to monitor the ecological state of benthic ecosystems. Globally, carbon and nitrogen stable isotope ratio investigations have provided confirmation of, and novel insights into ...
Tatiparthi Srinivas +2 more
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Benthic amphipod feeding groups are a well-established trophic classification that is mostly based on field observations and laboratory tests and are used in ecological studies to monitor the ecological state of benthic ecosystems. Globally, carbon and nitrogen stable isotope ratio investigations have provided confirmation of, and novel insights into ...
Tatiparthi Srinivas +2 more
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Austral Ecology, 2014
AbstractSex‐specific feeding segregation related to sexual bill dimorphism has been described in several oystercatcher species, including theAfrican black oystercatcher. For the latter, studies concerned only a small number of breeding pairs and were done prior the invasion of theSouthAfrican rocky shores by theMediterranean mussel, which is believed ...
Kohler, Sophie +5 more
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AbstractSex‐specific feeding segregation related to sexual bill dimorphism has been described in several oystercatcher species, including theAfrican black oystercatcher. For the latter, studies concerned only a small number of breeding pairs and were done prior the invasion of theSouthAfrican rocky shores by theMediterranean mussel, which is believed ...
Kohler, Sophie +5 more
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Trophic niche overlap and wild ungulate consumption by red fox and wolf in a mountain area in Italy
Mammalian Biology, 2012Abstract Red fox ( Vulpes vulpes ) and wolf ( Canis lupus ) are two widespread opportunistic predators living in simpatry in many areas. Nonetheless, scarce information are available on their trophic interactions. We investigated food habits of these two carnivores in a mountain area in Italy and assessed the extent of their trophic niche overlap ...
Bassi E +4 more
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Trophic Niche Breadth and Overlap of Three Egret Species in a Neotropical Mangrove Swamp
Waterbirds, 2010Empirical studies testing the predictions of theoretical models on interspecific competition are scarce. The present study focused on the effects of competition on trophic niche by: (1) analyzing temporal changes in the diet of Snowy Egret (Egrella thula) on a Brazilian mangrove swamp before and after its breeding site was colonized by two congeners ...
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High trophic overlap between co-occurring sea urchins in Southern Brazil
Regional Studies in Marine Science, 2022Carlos Alberto da Silva +5 more
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