Results 161 to 170 of about 82,204 (193)
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Sequential Sympatric Speciation Across Trophic Levels
Science, 2009A major cause for biodiversity may be biodiversity itself. As new species form, they may create new niches for others to exploit, potentially catalyzing a chain reaction of speciation events across trophic levels. We tested for such sequential radiation in the Rhagoletis pomonella (Diptera ...
Andrew A, Forbes +4 more
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Modelling of predator–prey trophic interactions. Part II: Three trophic levels
Journal of Mathematical Biology, 2006A general class of lumped parameter models describing the local dynamics of a tri-trophic chain in a controlled environment is analyzed in detail. The trophic functions characterizing the interactions are defined only by some properties and allow us to treat both prey-dependent and ratio-dependent models in a unified manner.
BUFFONI G, CASSINARI M. P, GROPPI, Maria
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Trophic transfer of nanomaterials and their effects on high-trophic-level predators
NanoImpact, 2023Nanotechnology offers great opportunities for numerous sectors in society. One important challenge in sustainable nanotechnology is the potential of trophic transfer of nanomaterials (NMs), which may lead to unintentional impacts on environmental and human health.
Fei, Dang +4 more
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2012
Trophic levels are determined by feeding relationships, with basal levels consisting of primary producers or detritus and upper levels based on consumption of these basal levels. Organisms on the second trophic level are referred to as primary consumers, which are in turn consumed by secondary consumers, and so on up a theoretical trophic chain ...
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Trophic levels are determined by feeding relationships, with basal levels consisting of primary producers or detritus and upper levels based on consumption of these basal levels. Organisms on the second trophic level are referred to as primary consumers, which are in turn consumed by secondary consumers, and so on up a theoretical trophic chain ...
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Trophic levels and trophic dynamics: A consensus emerging?
Trends in Ecology & Evolution, 1991There are three clearly different views on trophic levels. The systems-ecological tradition sees trophic levels as relatively discrete and well-defined units whose interactions cannot be derived from interactions between constituent populations. The reductionist population-ecological tradition sees trophic levels as inappropriate abstractions that ...
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Modelling integrated multi-trophic aquaculture: Optimizing a three trophic level system
Aquaculture, 2018As a fast-growing food production industry, aquaculture is dealing with the need for intensification due to the global increasing demand for fish products. However, this also implies the use of more sustainable practices to reduce negative environmental impacts currently associated with this industry, including the use of wild resources, destruction of
Granada, Luana +3 more
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1985
Although there has been considerable research on animals in Lake Mendota over the past 90 years, there has been little attempt at a quantitative assessment of standing crop, except for the work on Zooplankton already discussed in Chapter 6. The present chapter is intended to present a brief overview of previous work on higher trophic levels.
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Although there has been considerable research on animals in Lake Mendota over the past 90 years, there has been little attempt at a quantitative assessment of standing crop, except for the work on Zooplankton already discussed in Chapter 6. The present chapter is intended to present a brief overview of previous work on higher trophic levels.
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1994
Higher trophic levels are considered to be negligible in the overall carbon balance of the Oosterschelde and were therefore not included in the SMOES model. Nevertheless fish, birds and seals are quite conspicuous members of the ecosystem, both before and after completion of the Delta plan.
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Higher trophic levels are considered to be negligible in the overall carbon balance of the Oosterschelde and were therefore not included in the SMOES model. Nevertheless fish, birds and seals are quite conspicuous members of the ecosystem, both before and after completion of the Delta plan.
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Coevolution at Two Trophic Levels
1990In any real community of living organisms, be it on grassland weed patch by the roadside, in marshland, or in forest, there will be present a great number of species of plants, animals, and probably of bacteria and viruses. If you consider pairs of these species, they will almost all show some type of interaction. An interaction between two species can
S. D. Jayakar, L. A. Zonta
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Direct and indirect trophic effects of predator depletion on basal trophic levels
Ecology, 2016AbstractHuman population growth and development have heavily degraded coastal ecosystems with cascading impacts across multiple trophic levels. Understanding both the direct and indirect trophic effects of human activities is important for coastal conservation. In New England, recreational overfishing has triggered a regional trophic cascade.
Huili, Chen +3 more
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