Portal:Ecology

Portal topics: Activities; Culture; Geography; Health; History; Mathematics; Nature; People; Philosophy; Religion; Society; Technology; Random portal

Ecology

Ecology (from Ancient Greek οἶκος (oîkos) 'house', and -λογία (-logía) 'study of') is the natural science of the relationships among living organisms, including humans, and their physical 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 conservation biology, wetland management, natural resource management (agroecology, agriculture, forestry, agroforestry, fisheries, mining, tourism), urban planning (urban ecology), community health, economics, basic and applied science, and human social interaction (human ecology).

The word 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...)

Refresh with new selections below (purge)

Selected article - show another

The issue of what exactly defines a vacant niche, also known as empty niche, and whether they exist in ecosystems is controversial. The subject is intimately tied into a much broader debate on whether ecosystems can reach equilibrium, where they could theoretically become maximally saturated with species. Given that saturation is a measure of the number of species per resource axis per ecosystem, the question becomes: is it useful to define unused resource clusters as niche 'vacancies'? (Full article...)

List of selected articles

Selected image - show another

Carbon cycle

Credit: NASA

The carbon cycle is the biogeochemical cycle by which carbon is exchanged between the biosphere, geosphere, hydrosphere, and atmosphere of the Earth. Burning fossil fuels leads to the addition of extra carbon into the cycle over what naturally occurs and is a major cause of climate change.

General images

The following are images from various ecology-related articles on Wikipedia.

Image 1The leaves of an Alnus nepalensis tree provide a microhabitat for species like the leaf beetle Aulacophora indica. (from Habitat)
Image 2This coral reef in the Phoenix Islands Protected Area provides habitat for numerous marine species. (from Habitat)
Image 3a) A trophic pyramid showing the different trophic levels in a community. b) A food web of the same community (from Community (ecology))
Image 4The High Peaks Wilderness Area in the 6,000,000-acre (2,400,000 ha) Adirondack Park is an example of a diverse ecosystem. (from Ecosystem)
Image 5Spiny forest at Ifaty, Madagascar, featuring various Adansonia (baobab) species, Alluaudia procera (Madagascar ocotillo) and other vegetation (from Ecosystem)
Image 6Flora of Baja California desert, Cataviña region, Mexico (from Ecosystem)
Image 7Biological nitrogen cycling (from Ecosystem)
Image 8Twenty-five years after the devastating eruption at Mount St. Helens, United States, pioneer species have moved in. (from Habitat)
Image 9A simple trophic cascade diagram. On the right shows when wolves are absent, showing an increase in elks and reduction in vegetation growth. The left one shows when wolves are present and controlling the elk population. (from Community (ecology))
Image 10Desert scene in Egypt (from Habitat)
Image 11A generalised graph of a predator-prey population density cycle (from Community (ecology))
Image 12Dense mass of white crabs at a hydrothermal vent, with stalked barnacles on right (from Habitat)
Image 13Rainforest ecosystems are rich in biodiversity. This is the Gambia River in Senegal's Niokolo-Koba National Park. (from Ecosystem)
Image 14Table visualising size-symmetric competition, using fish as consumers and crabs as resources. (from Community (ecology))
Image 15Sequence of a decomposing pig carcass over time (from Ecosystem)
Image 16Rich rainforest habitat in Dominica (from Habitat)
Image 17A bear with a salmon. Interspecific interactions such as predation are a key aspect of community ecology. (from Community (ecology))
Image 18Global oceanic and terrestrial phototroph abundance, from September 1997 to August 2000. As an estimate of autotroph biomass, it is only a rough indicator of primary production potential and not an actual estimate of it. (from Ecosystem)
Image 19Wetland habitat types in Borneo (from Habitat)
Image 20
A freshwater lake in Gran Canaria, an island of the Canary Islands. Clear boundaries make lakes convenient to study using an ecosystem approach.
(from Ecosystem)
Image 21Loch Lomond in Scotland forms a relatively isolated ecosystem. The fish community of this lake has remained stable over a long period until a number of introductions in the 1970s restructured its food web. (from Ecosystem)
Image 22An Antarctic rock split apart to show endolithic lifeforms showing as a green layer a few millimeters thick (from Habitat)
Image 23Ibex in an alpine habitat (from Habitat)
Image 24Few creatures make the ice shelves of Antarctica their habitat, but water beneath the ice can provide habitat for multiple species. Animals such as penguins have adapted to live in very cold conditions. (from Habitat)
Image 25A red-chested cuckoo chick being feed by a significantly smaller Cape robin-chat adult (from Community (ecology))

Related WikiProjects

WikiProject Ecology

edit

Things you can do

Here are some tasks awaiting attention:

Article requests : Create any of the missing articles listed on the WikiProject Ecology page, Alkali bee (Pollinator decline), Ecosystem function (presently a redirect), Nutrient flow (Synecology), Seed crop (Pollinator decline)
Verify : Agroecosystem, Biologist, Botany, Ecological pyramid, Ecological selection, Ecological succession, Ecotone, Functional ecology, Macroecology, Microbial ecology, Molecular biology, Uncontacted peoples
Wikify : Add {{Portal|Ecology}} to the See also sections of ecology-related articles.
Other : For additional tasks, see Wikipedia:WikiProject Ecology/to do

– When a task is completed, please remove it from the list.

Recognized content - show another

Entries here consist of Good and Featured articles, which meet a core set of high editorial standards.

In zoology, automimicry, Browerian mimicry, or intraspecific mimicry, is a form of mimicry in which the same species of animal is imitated. There are two different forms.

In one form, first described by Lincoln Brower in 1967, weakly-defended members of a species with warning coloration are parasitic on more strongly-defended members of their species, mimicking them to provide the negative reinforcement learning required for warning signals to function. The mechanism, analogous to Batesian mimicry, is found in insects such as the monarch butterfly. (Full article...)

List of recognized articles

Selected biography - show another

Leonty Grigoryevich Ramensky (Russian: Лео́нтий Григо́рьевич Ра́менский; June 16 [O.S. June 6] 1884 – January 27, 1953) was a plant ecologist who conceived several important ideas that were overlooked in the West and later ’re-invented’ by western scientists. He lived in the Russian Empire and later the Soviet Union.

He graduated from the Petrograd University in 1916 and obtained a Ph.D. in biology in 1935. From 1911 to 1928 he worked in the Research Institute of the Voronezh Gouvernement (now Voronezh State University) and from 1928 in the State Grassland Institute (later All-union Scientific Research Institute of Forages dedicated to V.R.Williams).

Ramensky was a proponent of the view that biotic communities consist of species behaving individualistically (much like Henry Gleason in the U.S.A.). This was in strong contrast to the prevailing view of communities as super-organisms, held by the powerful V.N.Sukachov and his consorts (much like Frederic Clements in the U.S.A.). Hence, Ramensky was marginalized within the Russian scientific community and was only posthumously rehabilitated by Russian ecologists. Much later, the significance of his ideas was discovered by ecologists in the West. (Full article...)

List of selected biographies

Did you know (auto-generated)

... that wampum artist Elizabeth James-Perry also works on ecological restoration projects, including the reintroduction of native plant life?
... that scientist Adelaida K. Semesi was known as "mama mangroves" due to her specialist knowledge of their ecology?
... that Enriqueta Medellín, a Mexican surgeon, has an ecological center and environmental prize named after her in the state of Aguascalientes?
... that one of the founders of the Lithuanian Social Democratic Party, Andrius Domaševičius, had his own private gynecology practice, treating poor women free of charge?
... that gynecologist Mary Lake Polan wrote a medical mystery novel to "demystify" the procedures behind in vitro fertilisation?
... that the British political theorist Chris Armstrong has called for a "blue new deal" to secure ecological resilience for the ocean and a just blue economy?

Selected quote - show another

“

We are all together in this, we are all together in this single living ecosystem called planet Earth. As we learn how we fit into the greater scheme of things, and begin to understand how the system works, we can plan ahead, we can use the resources responsibly, to show some respect for this inheritance that goes back 4.6 billion years.

”

— Sylvia Earle

Ecology news

From the Wikinews Environment portal

Additional News Highlights

November 5, 2009: "New ocean forming in African desert."

Selected publication - show another

The Journal of Animal Ecology is a peer-reviewed scientific journal publishing research in all areas of animal ecology. It began publication in 1932, and as such is the second oldest journal of the British Ecological Society (after the Journal of Ecology). The Journal of Animal Ecology is available both in print and online. (Full article...)

More selected publications