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During 2016, the wolf population was nearly extirpated with only two severely inbred wolves present. [3] [27] The moose population was about 2/3rd of its historical maximum with ample forage and growing rapidly. Absent a new infusion of migrant wolves, or human intervention, the original situation of a high moose population limited only by ...
Graph of world population over the past 12,000 years . As a general rule, the confidence of estimates on historical world population decreases for the more distant past. Robust population data exist only for the last two or three centuries. Until the late 18th century, few governments had ever performed an accurate census.
An important concept in population ecology is the r/K selection theory. For example, if an animal has the choice of producing one or a few offspring, or to put a lot of effort or little effort in offspring—these are all examples of trade-offs.
Ecology is a new science and considered as an important branch of biological science, having only become prominent during the second half of the 20th century. [1] Ecological thought is derivative of established currents in philosophy, particularly from ethics and politics.
Download as PDF; Printable version; In other projects ... Pages in category "Population ecology" ... Ideal free distribution;
Biogeography is a synthetic science, related to geography, biology, soil science, geology, climatology, ecology and evolution. Some fundamental concepts in biogeography include: allopatric speciation – the splitting of a species by evolution of geographically isolated populations; evolution – change in genetic composition of a population
The Leslie matrix is a discrete, age-structured model of population growth that is very popular in population ecology named after Patrick H. Leslie. [1] [2] The Leslie matrix (also called the Leslie model) is one of the most well-known ways to describe the growth of populations (and their projected age distribution), in which a population is closed to migration, growing in an unlimited ...
In historical ecology, the landscape is defined as an area of interaction between human culture and the non-human environment. The landscape is a perpetually changing, physical manifestation of history. [17] Historical ecology revises the notion of the ecosystem and replaces it with the landscape. While an ecosystem is static and cyclic, a ...