Ecology is the study of a community of biota, including the interactions with abiotic factors such as soils, water, and meteorological factors. The field of ecology addresses interactions of plants and animals including feeding behavior, selection of nesting or denning sites and competition among species. Time changes are particularly important, such as landscape changes arising from plant succession. Conservation of habitats is analyzed in order to determine the viability of not only individual species, but of the entire assemblage of flora, fauna and micro-organisms in a given ecosystem.

  • Review: Forest restoration Featured Article Review: Forest restoration Review: Forest restoration

    This Review, written by Raf Aerts and Olivier Honnay*, appeared first in BioMed Central Ecology—a peer-reviewed, open access journal. This review article is part of the... More »

  • Orangutan Featured Article Orangutan Orangutan

    The largest of the Asian primates, the orangutan, belongs to the Hominidae (or Great Apes) family whose members also include humans, chimpanzees, and gorillas.  While fossil... More »

  • Arctic marine environments Featured Article Arctic marine environments Arctic marine environments

    This is Section 10.2.1 of the Arctic Climate Impact Assessment Lead Author: Michael B. Usher; Contributing Authors:Terry V. Callaghan, Grant Gilchrist, Bill Heal, Glenn P.... More »

  • Habitat fragmentation Featured Article Habitat fragmentation Habitat fragmentation

    Habitat fragmentation involves alteration of habitat resulting in spatial separation of habitat units from a previous state of greater... More »

  • Terrestrial biome Featured Article Terrestrial biome Terrestrial biome

    Introduction Many places on Earth share similar climatic conditions despite being found in geographically different areas. As a result of natural selection, comparable... More »

  • Virus Featured Article Virus Virus

    A virus is a microscopic organism that can replicate only inside the cells of a host organism. Most viruses are so tiny they are only observable with at least a conventional... More »

  • Europa Island Featured Article Europa Island Europa Island

    Europa Island located in the southern Mozambique Channel, between Madagascar and Mozambique. Europa Island is about 100 kilometers (km) southeast of Bassas da... More »

  • Mojave Desert Featured Article Mojave Desert Mojave Desert

    WWF Terrestrial Ecoregions Collection The Mojave Desert is the smallest of the four North American deserts. While the Mojave lies between the... More »

  • Cheetah Featured Article Cheetah Cheetah

    The Cheetah, Acinonyx jubatus, is a vulnerable species within the cat family. While the fastest land animal and an adept hunter, this felid is not agressive... More »

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Lake Baikal Basin, Russian Federation Last Updated on 2015-09-15 16:56:57 Lake Baikal Basin (53°10'24.96 North, 107°39'45 East) is a World Heritage Site located in the Russian Federation. Situated in south central Siberia close to the Mongolian border, Lake Baikal is the oldest by 25 million years, and deepest, at 1637 metres (m), of the world's lakes. It is 3.15 million hectares (ha) in size and contains a fifth of the world's unfrozen surface freshwater. Its age and isolation and unusually fertile depths have given it the world's richest and most unusual lacustrine fauna which, like the Galapagos Islands, is of outstanding value to evolutionary science. The exceptional variety of endemic animals and plants make the lake one of the most biologically diverse on Earth. A pulp and cellulose mill on the southern shore, which has created water pollution of 200 square kilometres (km2) of the lake and generated some of the highest... More »
Enriquillo wetlands Last Updated on 2015-09-12 15:54:07 WWF Terrestrial Ecoregions Collection Consisting of a series of lagoons, the Enriquillo wetlands ecoregion  represents the remains of an ancient marine channel that divided the island of Hispaniola (Dominican Republic and Haiti) into two paleo-islands more than 5000 years before present. The largest lake in this ecoregion, Lake Enriquillo in the Dominican Republic is the largest and most hypersaline lake in all of the Antilles. It consists of a depression that is approximately 44 metres (m) below sea level, surrounded by thorny subtropical mountains and dry forests of great biological importance. The lake surface is the lowest topographic point in the entire Caribbean Basin. This lake is home to the largest population of American crocodile (Crocodylus acutus), although currently its the populations of this reptile are at risk. It is also the... More »
Nama Karoo Last Updated on 2015-09-07 17:42:32 WWF Terrestrial Ecoregions Collection The Nama Karoo is a vast, open, arid ecoregion in southern Africa dominated by low-shrub vegetation, punctuated by rugged relief. Although not remarkably rich in species or endemism, the flora and fauna of the region are impressively adapted to its climatic extremes. The Nama Karoo ecoregion is part of the Deserts and Xeric Shrublands biome, within the Afrotropics Realm. The major threats to biodiversity are posed by pastoralism, introduction of alien species of plants, mining and conversion of native habitat to agriculture, all exacerbated by the fact that less than one percent of the ecoregion is presently conserved. Most of the Nama Karoo occurs on the central plateau of the Cape Province in South Africa, although it extends over the Orange River into Namibia in the northwest. The Great Escarpment,... More »
Namibian savanna woodlands Last Updated on 2015-09-07 13:29:18 WWF Terrestrial Ecoregions Collection The Namibian savanna woodlands ecoregion covers the Great Escarpment that delimits the interior of southern Africa from both the Kaokoveld Desert and Namib Desert. This broken and deeply dissected escarpment is an area of high endemism for plants, invertebrates, amphibians, reptiles, mammals and birds. The northern area of the ecoregion, the Kaoko escarpment, is an endemism "hotspot" (area of extremely high species richness and endemism). The Namibian savanna woodlands comprise a land area of approximately 87,100 square miles. This northern area is poorly protected and is under threat from poaching, off-road driving, and to a lesser extent from farming, and resultant habitat fragmentation;  much of this destabilisation in the Angolan portion of the ecoregion stems from the Cuban mercenaries aided... More »
Kaokoveld Desert Last Updated on 2015-07-14 14:38:13 WWF Terrestrial Ecoregions Collection The Kaokoveld Desert represents the northern area of the vast Namib Desert. It is a harsh, arid landscape of rugged mountains, gravel plains and shifting sand dunes. Surface water is scarce, with only one perennial river flowing through the region, the Kunene River. However, the dry riverbeds transecting the area are the lifelines of the desert. They are well vegetated and are home to large mammals such as African Elephant, Black Rhino and Giraffe. The remainder of the landscape is poorly vegetated and extremely arid. Coastal fogs allow a range of interesting, desert-adapted animal species to survive in this low-rainfall environment. The relict gymnosperm Welwitschia mirabilis, which represents the sole surviving member of its family, is found throughout the ecoregion. The Kaokoveld Desert is well protected in... More »