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In ecological theory, the Hutchinson's ratio is the ratio of the size differences between similar species when they are living together as compared to when they are isolated. It is named after G. Evelyn Hutchinson who concluded that various key attributes in species varied according to the ratio of 1:1.1 to 1:1.4.
In contemporary niche theory, the "impact niche" is defined as the combination of effects that a given consumer has on both a). the resources that it uses, and b). the other consumers in the ecosystem. Therefore, the impact niche is equivalent to the Eltonian niche since both concepts are defined by the impact of a given species on its environment.
A phylogenetic tree of living things. Evolutionary ecology lies at the intersection of ecology and evolutionary biology.It approaches the study of ecology in a way that explicitly considers the evolutionary histories of species and the interactions between them.
Limiting similarity (informally "limsim") is a concept in theoretical ecology and community ecology that proposes the existence of a maximum level of niche overlap between two given species that will allow continued coexistence.
Null models, admittedly difficult to perfect, are in use, and, although a leading conservation scientist recently lauded island biogeography theory as "one of the most elegant and important theories in contemporary ecology, towering above thousands of lesser ideas and concept", he nevertheless finds that "the species-area curve is a blunt tool ...
George Evelyn Hutchinson ForMemRS (January 30, 1903 – May 17, 1991) was a British ecologist sometimes described as the "father of modern ecology." [2] He contributed for more than sixty years to the fields of limnology, systems ecology, radiation ecology, entomology, genetics, biogeochemistry, a mathematical theory of population growth, art history, philosophy, religion, and anthropology. [3]
The following is a partial list of social science journals, including history and area studies. There are thousands of academic journals covering the social sciences in publication, and many more have been published at various points in the past.
The American Journal of Economics and Sociology; American Journal of Sociology; American Sociological Review; Annales. Histoire, Sciences sociales; Année Sociologique; Annual Review of Sociology; Armed Forces & Society; Articulo – Journal of Urban Research