Essential Biomolecules in Food Webs
نویسندگان
چکیده
منابع مشابه
Food webs
Ecosystems, whether they are forests, lakes or coral reefs, consist of a diverse range of species that interact with each other in many ways. As ecologists we want to understand how these complex systems function as a whole and how they respond to human impacts such as harvesting and environmental change. A mechanistic understanding of the underlying biological processes will allow us to predic...
متن کاملHuman Involvement in Food Webs*
Human involvement in food webs has been profound, bringing about enormous and disproportionate losses of large apex predators on land and in water. The losses have modified or even eliminated concatenations of indirect interactions propagating from predators to herbivores to plants, inter alia. Food webs are a synthesis of bottom-up energy and nutrient flow from plant producers to consumers and...
متن کاملIncluding parasites in food webs.
Growing evidence indicates parasite inclusion in food-web analyses is a logical default. Comparisons of food webs including and excluding host-parasite interactions demonstrate the influence of parasites on community dynamics. Although including parasites is undoubtedly informative, the necessary level of detail exists for only a handful of systems. In a recent Ecology Letters article, Lafferty...
متن کاملDispersal dynamics in food webs.
Studies of food webs suggest that limited nonrandom dispersal can play an important role in structuring food webs. It is not clear, however, whether density-dependent dispersal fits empirical patterns of food webs better than density-independent dispersal. Here, we study a spatially distributed food web, using a series of population-dispersal models that contrast density-independent and density...
متن کاملScaling relations in food webs.
In the last three decades, researchers have tried to identify universal patterns in the structure of food webs. It was recently proposed that the exponent eta characterizing the efficiency of the transport of energy in large and small food webs might have a universal value (eta = 1.13). In this work we establish lower and upper bounds for this exponent in a general spanning tree with a fixed nu...
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ژورنال
عنوان ژورنال: Frontiers in Ecology and Evolution
سال: 2019
ISSN: 2296-701X
DOI: 10.3389/fevo.2019.00269