biotic factors


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bi·ot·ic fac·tors

environmental factors or influences resulting from the activities of living organisms, as contrasted to those resulting from climatic, geologic, or other factors.
References in periodicals archive ?
Perhaps one of the reasons was that we were focused on documenting responses to manipulations of biotic factors within the typical 2-3 year grant funding window.
Spatial and temporal variation in fish assemblages of drying stream pools: the role of abiotic and biotic factors.
During spring 2008, the effect of biotic factors observed for the eggs and all instars fluctuated from 7.
Many abiotic factors (such as temperature, nutrients, and chemicals) and biotic factors (such as the host plant and predators) can cause fluctuations in aphid populations (Minks & Harrewijn, 1989; Richardson & Lagos, 2007).
It is important to ascertain the relative influence biotic factors and body size have on fecundity, to aid in the understanding of grasshopper population dynamics and outbreaks (Branson et al.
In addition, the rate of fertilizer breakdown and utilisation may be greatly higher in the rice fields because of presence of a wide range of biotic factors including decomposition microorganisms, aquatic animals and vegetation including rice plants.
Biotic factors are living organisms--ranging from animals and other plants (weeds) to microorganisms--that affect the atmospheric environment.
Environment: (1603) 1: the circumstances, objects or conditions by which one is surrounded 2a: the complex of physical, chemical and biotic factors (as climate, soil and living things) that act upon an organism or an ecological community and ultimately determine its form and survival b: the aggregate of social and cultural conditions that influence the life of an individual or community--environmental (adj.
Environmental science is the systematic study of the complex of physical, chemical, and biotic factors that act upon on an organism or an ecologic community and ultimately determine its form and survival.
While the study of biotic factors, including competition and predation, are important in order to understand the dynamics regulating community structure, the study of abiotic factors must also be included as possible controlling variables (Dunson & Travis 1991).
Chapter 11 is by Ong of ICRAF and Rao of ICRISAT, who review much of their own literature on agroforestry including competition for inputs and interaction with other biotic factors in relation to management of agroforestry systems.
8, and 12 months post-bum suggested that the increase in Geolycosa densities in burned scrub relative to unburned scrub was attributed to abiot ic factors, such as increased availability of burrow sites and increased soil temperatures that hastened growth and date of first reproduction, rather than biotic factors, such as more or higher quality prey for spiders foraging at the soil surface.