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Revision as of 01:19, 7 July 2020
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Ecology
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Ecology (from Ancient Greek οἶκος (oîkos) 'house' and -λογία (-logía) 'study of') is the natural science of the relationships among living organisms and their environment. Ecology considers organisms at the individual, population, community, ecosystem, and biosphere levels. Ecology overlaps with the closely related sciences of biogeography, evolutionary biology, genetics, ethology, and natural history. Ecology is a branch of biology, and is the study of abundance, biomass, and distribution of organisms in the context of the environment. It encompasses life processes, interactions, and adaptations; movement of materials and energy through living communities; successional development of ecosystems; cooperation, competition, and predation within and between species; and patterns of biodiversity and its effect on ecosystem processes. Ecology has practical applications in fields such as conservation biology, wetland management, natural resource management, and human ecology. The term ecology (German: Ökologie) was coined in 1866 by the German scientist Ernst Haeckel. The science of ecology as we know it today began with a group of American botanists in the 1890s. Evolutionary concepts relating to adaptation and natural selection are cornerstones of modern ecological theory. Ecosystems are dynamically interacting systems of organisms, the communities they make up, and the non-living (abiotic) components of their environment. Ecosystem processes, such as primary production, nutrient cycling, and niche construction, regulate the flux of energy and matter through an environment. Ecosystems have biophysical feedback mechanisms that moderate processes acting on living (biotic) and abiotic components of the planet. Ecosystems sustain life-supporting functions and provide ecosystem services like biomass production (food, fuel, fiber, and medicine), the regulation of climate, global biogeochemical cycles, water filtration, soil formation, erosion control, flood protection, and many other natural features of scientific, historical, economic, or intrinsic value. (Full article...) Selected article -The storage effect is a coexistence mechanism proposed in the ecological theory of species coexistence, which tries to explain how such a wide variety of similar species are able to coexist within the same ecological community or guild. The storage effect was originally proposed in the 1980s to explain coexistence in diverse communities of coral reef fish, however it has since been generalized to cover a variety of ecological communities. The theory proposes one way for multiple species to coexist: in a changing environment, no species can be the best under all conditions. Instead, each species must have a unique response to varying environmental conditions, and a way of buffering against the effects of bad years. The storage effect gets its name because each population "stores" the gains in good years or microhabitats (patches) to help it survive population losses in bad years or patches. One strength of this theory is that, unlike most coexistence mechanisms, the storage effect can be measured and quantified, with units of per-capita growth rate (offspring per adult per generation). The storage effect can be caused by both temporal and spatial variation. The temporal storage effect (often referred to as simply "the storage effect") occurs when species benefit from changes in year-to-year environmental patterns, while the spatial storage effect occurs when species benefit from variation in microhabitats across a landscape. (Full article...) Selected image -Credit: User:Fir0002 A bee swarm of Apis mellifera ligustica (the Italian bee), a sub-species of the western honey bee (Apis mellifera), on a fallen log
General imagesThe following are images from various ecology-related articles on Wikipedia.
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In conservation biology, a flagship species is a species chosen to raise support for biodiversity conservation in a given place or social context. Definitions have varied, but they have tended to focus on the strategic goals and the socio-economic nature of the concept, to support the marketing of a conservation effort. The species need to be popular, to work as symbols or icons, and to stimulate people to provide money or support. Species selected since the idea was developed in 1980s include widely recognised and charismatic species like the black rhinoceros, the Bengal tiger, and the Asian elephant. Some species such as the Chesapeake blue crab and the Pemba flying fox, the former of which is locally significant to Northern America, have suited a cultural and social context. Although animal species that can be described as "charismatic megafauna" are frequently the flagship species for a protected ecosystem, large, dominant plant species sometimes serve this role as well, for example, several United States national parks, including Redwood National and State Parks, Joshua Tree National Park, and Saguaro National Park, are named for the flagship plant species for those protected areas. Butterfly species, such as the monarch butterfly, have also served as flagship species in some contexts. (Full article...) Selected biography -Exequiel Ezcurra (born March 21, 1950, Buenos Aires, Argentina) is an Argentine-Mexican plant ecologist and conservationist. His highly interdisciplinary work spans desert plant ecology, mangroves, island biogeography, sea birds, fisheries, oceanography, and deep-sea ecosystems. Between 2008 and 2019 he was director of the University of California Institute for Mexico and the United States. He is now a professor of plant ecology at UC Riverside. (Full article...) Did you know -Selected quote -
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Selected publication -Advances in Ecological Research is a scientific journal which was first published in 1962 by Academic Press. It was originally envisaged to be published every two years, however due to the quantity and quality of contributions it began to be published annually after the second issue. The journal publishes papers on a wide range of ecology topics typically including landscape and ecosystem ecology, populations and communities of plants and animals and physiology. (Full article...) Related portalsRelated articlesAssociated WikimediaThe following Wikimedia Foundation sister projects provide more on this subject:
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