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Liebig's law has been extended to biological populations (and is commonly used in ecosystem modelling). For example, the growth of an organism such as a plant may be dependent on a number of different factors, such as sunlight or mineral nutrients (e.g., nitrate or phosphate). The availability of these may vary, such that at any given time one ...
The species–area relationship or species–area curve describes the relationship between the area of a habitat, or of part of a habitat, and the number of species found within that area. Larger areas tend to contain larger numbers of species, and empirically, the relative numbers seem to follow systematic mathematical relationships. [1]
The trophic level of an organism is the position it occupies in a food web. Within a food web, a food chain is a succession of organisms that eat other organisms and may, in turn, be eaten themselves. The trophic level of an organism is the number of steps it is from the start of the chain. A food web starts at trophic level 1 with primary ...
Limnology, paleolimnology, trophic ecology. Institutions. Yale University. Doctoral advisor. Samuel Eddy. Raymond Laurel Lindeman (July 24, 1915 – June 29, 1942) [1][2] was an ecologist whose graduate research is credited with being a seminal study in the field of ecosystem ecology, specifically on the topic of trophic dynamics.
Energy flow is the flow of energy through living things within an ecosystem. [1] All living organisms can be organized into producers and consumers, and those producers and consumers can further be organized into a food chain. [2][3] Each of the levels within the food chain is a trophic level. [1] In order to more efficiently show the quantity ...
The basic conceptualization of nature from the perspective of environmental economics is that manufactured capital can be used as a substitute for natural capital. [13] The definition of PES provided by environmental economics is the most popular: a voluntary transaction between a service buyer and service seller that takes place on the condition that either a specific ecosystem service is ...
The carrying capacity of an environment is the maximum population size of a biological species that can be sustained by that specific environment, given the food, habitat, water, and other resources available. The carrying capacity is defined as the environment 's maximal load, [clarification needed] which in population ecology corresponds to ...
Ecological footprint. The ecological footprint measures human demand on natural capital, i.e. the quantity of nature it takes to support people and their economies. [ 1 ][ 2 ][ 3 ] It tracks human demand on nature through an ecological accounting system. The accounts contrast the biologically productive area people use to satisfy their ...