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Topics related to "ecological niche"

cichlid
cichlid , common name for members of the family Cichlidae, several hundred species of spiny-finned freshwater fishes of moderate or small size, native to Africa, S Asia, Mexico, and Central and South America. Cichlids are found in tropical waters, where they occupy the same ecological niche as their... Read more
Darwin's finches
Darwin's finches or Galapagos finches , species of small finches, constituting the subfamily Geospizinae of the finch family. This group of thirteen species is confined to the Galápagos Islands, except a single species found on Cocos Island, about 600 mi (960 km) northeast. Their special ... Read more
fly
fly name commonly used for any of a variety of winged insects , but properly restricted to members of the order Diptera, the true flies, which includes the housefly , gnat , midge , mosquito , and tsetse fly . All have sucking or piercing-and-sucking mouthparts and, except for a few wingless ... Read more
fly
fly name commonly used for any of a variety of winged insects , but properly restricted to members of the order Diptera, the true flies, which includes the housefly , gnat , midge , mosquito , and tsetse fly . All have sucking or piercing-and-sucking mouthparts and, except for a few wingless ... Read more
coyote
coyote or prairie wolf, small, swift wolf , Canis latrans, native to W North America. It is found in deserts, prairies, open woodlands, and brush country; it is also called brush wolf. The coyote resembles a medium-sized dog, with a narrow, pointed face, long, thick, tawny fur and a black-ti... Read more
rhea
rhea , common name for a South American bird of the family Rheidae, which is related to the ostrich . Weighing from 44 to 55 lb (20-25 kg) and standing up to 60 in. (152 cm) tall, the rhea is slightly smaller than the ostrich and lacks that bird's extravagant plumelike tail feathers. The rhea also ... Read more
tenrec
tenrec , any of the small insectivorous mammals of the family Tenrecidae, also called tendrecs or tanrecs. These animals are found on the island of Madagascar. In that closed environment they have evolved diverse forms, filling various ecological niches occupied by other small mammals elsewhere. The... Read more
marsupial
marsupial , member of the order Marsupialia, or pouched mammals. With the exception of the New World opossums and an obscure S American family (Caenolestidae), marsupials are now found only in Australia, Tasmania, New Guinea, and a few adjacent islands. They are generally distinguished from placen... Read more
mass extinction
mass extinction the extinction of a large percentage of the earth's species, opening ecological niches for other species to fill. There have been at least ten such events. The five greatest were those of the final Ordovician period (approximately 435 million years ago), the late Devonian period ... Read more
ecology
ecology study of the relationships of organisms to their physical environment and to one another. The study of an individual organism or a single species is termed autecology; the study of groups of organisms is called synecology. The Ecosystem Within the biosphere —the total expan... Read more

Encyclopedia entries related to "ecological niche"

cichlid
Book article from: The Columbia Encyclopedia, Sixth Edition ...S Asia, Mexico, and Central and South America. Cichlids are found in tropical waters, where they occupy the same ecological niche as their colder-water relatives, the sunfishes . The larger species are food fish of some importance, and small species... Read more
mass extinction
Book article from: The Columbia Encyclopedia, Sixth Edition ...extinction of a large percentage of the earth's species, opening ecological niches for other species to fill. There have been at least...both land and sea creatures, mass extinctions also opened new ecological niches, permitting surviving species to thrive in new habitats... Read more
Ecology, Science of
Encyclopedia entry from: Encyclopedia of Science and Religion ...scale and orientation of the scientists working on ecological questions. Common to all ecological perspectives are the role of evolution and historical...mate, or raises its young reveal something about the ecological contexts in which the species has evolved. Physiological...conditions. To describe the ... Read more
tenrec
Book article from: The Columbia Encyclopedia, Sixth Edition ...animals are found on the island of Madagascar. In that closed environment they have evolved diverse forms, filling various ecological niches occupied by other small mammals elsewhere. There are about 30 tenrec species, classified in 10 genera. The common tenrec... Read more
palaeoecology
Book article from: The Oxford Companion to the Earth ...once-living organisms. The ecosystem is the largest unit of ecological study and consists of a portion of the physical environment...habitat is the environment in which the organism lives; its niche is its position in the habitat, including its relationship... Read more
ecology
Book article from: World Encyclopedia ...cycle , hydrological cycle , nitrogen cycle and oxygen cycle) are assisted when the biological diversity of species fills ecological niches. This diversity produces climax communities , and an extensive climax community is called a biome . Applied ecology... Read more
rhea
Book article from: The Columbia Encyclopedia, Sixth Edition ...the pampas and savannas and may often be found feeding in mixed herds along with cattle or guanaco, occupying an ecological niche similar to that of the ostrich and the zebra of Africa. Rheas feed on several kinds of plants, insects, and small... Read more
fly
Book article from: The Columbia Encyclopedia, Sixth Edition ...halteres. All flies undergo complete metamorphosis , i.e., a four-stage development. The larvae, which occupy a wide variety of ecological niches, typically require a moist environment such as rotting flesh, decaying fruit, or the internal organs of other animals... Read more
Extinction
Encyclopedia entry from: Macmillan Encyclopedia of Death and Dying ...these "relations" are the ecological niches, the millions of different...share a habitat, generally a niche can only be occupied by one...organisms compete for a particular niche, one will invariably lose out. If a niche should become empty, such... Read more
wolf
Book article from: The Columbia Encyclopedia, Sixth Edition ...widespread in W North America. Real estate development in their traditional habitat, combined with the opening up of the ecological niche formerly filled by gray wolves and mountain lions, has prompted coyotes to greatly increase their range; they are... Read more

Dictionary entries related to "ecological niche"

ecological niche
Book article from: A Dictionary of Biology ecological niche The status or role of an organism in its environment. An organism's niche is defined by the types of food it consumes, its predators, temperature tolerances, etc. Two species cannot coexist stably if they occupy identical niches. Read more
niche
Book article from: A Dictionary of Zoology niche 1. ( ecological niche ) The functional position of an organism in its environment, comprising the habitat in which the organism lives, the periods of time during which it occurs and is active there, and the resources it obtains there. 2. ( evolutionary niche ) Way of life. Read more
effect hypothesis
Book article from: A Dictionary of Zoology ...proposed that a species , occupying a restricted ecological niche , would continually give rise to daughter species...characteristics; but because of the features of the particular ecological niche, only species that possessed a particular suite of... Read more
hypervolume
Book article from: A Dictionary of Ecology hypervolume A region defined by more than three dimensions; an ecological niche is often described as an n -dimensional hypervolume. Read more
competitive exclusion principle
Book article from: A Dictionary of Biology ...in 1934, stating that two species that occupy the same habitat cannot also occupy the same ecological niche . Any two species that occupy the same niche will compete with each other to the detriment of one of the species, which will thus be excluded... Read more
competitive-exclusion principle
Book article from: A Dictionary of Zoology competitive-exclusion principle ( exclusion principle , Gause principle ) The principle that no two species will occupy the same ecological niche ; i.e. two or more resource-limited species, having identical patterns of resource use, cannot coexist in a stable... Read more
pioneer plant
Book article from: A Dictionary of Ecology ...plant A plant that occurs early in a vegetational succession . Pioneer species possess characters that suit them to their ecological niches , notably rapid growth, the production of copious, small, easily dispersed seed, and the ability to germinate and establish... Read more
autecology
Book article from: A Dictionary of Biology ...aims to investigate the ecology of populations or individuals of a particular species, including habitat, distribution, life cycle, etc. This should enable a full description of the ecological niche of the organism to be made. Compare synecology . Read more
Elton, CharlesSutherland
Book article from: A Dictionary of Ecology ...CharlesSutherland (1900–91)A British zoologist who studied animal communities and made major contributions to the development of ecological studies in general and of animal ecology in particular. One of his early books, Animal Ecology (first published in 1927... Read more
Elton, Charles Sutherland
Book article from: A Dictionary of Plant Sciences ...Sutherland (1900–91) A British zoologist who studied animal communities and made major contributions to the development of ecological studies in general and of animal ecology in particular. One of his early books, Animal Ecology (first published in 1927) was... Read more

Related newspaper, magazine, and trade journal articles from HighBeam Research

Areas of endemism of Mexican terrestrial mammals: a case study using species' ecological niche modeling, Parsimony Analysis of Endemicity and Goloboff fit/Areas de endemismo de mamiferos terrestres de Mexico: un caso de estudio usando modelos de nicho ecologico, Analisis de Parsimonia de Endemismos y ajuste de Goloboff/Areas de endemismo dos mamiferos terrestres do Mexico: um estudo de caso usando modelamento de nicho ecologico ...
Magazine article from: Interciencia; 3/1/2007; ; 700+ words ; ...of endemism of Mexican terrestrial mammals using ecological niche modeling projected as species' potential distributions...obtain a smaller number of cladograms. KEYWORDS / Ecological Niche Modeling / Endemicity / GARP / Mexico / PAE / Species... Read more
Ecological applications; toward a sustainable world.(Brief Article)(Book Review)
Magazine article from: SciTech Book News; 12/1/2007; 182 words ; 9781405136983 Ecological applications; toward a sustainable...such subjects as essential niche theory and population dynamics...primary emphasis is on how ecological phenomena relate to each...involved. He first covers the ecological crises humans have made, then addresses ecological ... Read more
The emergence of manipulative experiments in ecological spider research (1684-1973).
Magazine article from: Journal of Arachnology; 9/1/2005; ; 700+ words ; ...post-war period up until 1973 when ecological spider research gathered momentum...However, there was little evidence that ecological theory was being tested. Instead...delay, Charles Elton's theories of the niche and succession fed into spider ecology...remained since 1684 has been the gift of ... Read more
Ecological risk assessment at the Savannah River Site.(Brief Article)
Magazine article from: Bulletin of the South Carolina Academy of Science; 1/1/2002; ; 283 words ; Ecological risk assessment program at the Savannah River Site (SRS) is a comprehensive process that follows the 1997 EPA Ecological Risk Assessment Guidance for Superfund. A site characterization...and sediment). These constituents are then compared to ecological screening values (ESVs), which are accepted ... Read more
Worldly wonder: religions enter an ecological phase.
Magazine article from: E; 11/1/2002; ; 700+ words ; ...global community. As they identify their resources for deeper ecological awakening--scriptural, symbolic, ritual and ethical--they...its flourishing in Earth's evolution. We begin to find our niche. We realize we are not only part of humankind but of Earthkind...critical contemporary issues and estranged from ... Read more
Niche modeling; predictions from statistical distributions.(Brief Article)(Book Review)
Magazine article from: SciTech Book News; 3/1/2007; 124 words ; 9781584884941 Niche modeling; predictions from statistical distributions. Stockwell...Hardcover Mathematical and computational biology series QH546 Niche modeling investigates the response of species to their environment...errors and how to avoid them. The CiP data shows the title Ecological niche ... Read more
Handbook of niche marketing; principles and practice.(Brief Article)(Book Review)
Magazine article from: Reference & Research Book News; 5/1/2006; 146 words ; 0789023296 Handbook of niche marketing; principles and practice. Ed. by Tevfik Dalgic...nine articles on concepts, research, and cases relating to niche marketing, written by executives and marketing scholars from...world. They discuss international methods, cannibalization, ecological theory and ... Read more
The sweet spot: Latin America's poorest farmers find rich niches in the United States and Europe. (Exporting).
Magazine article from: Latin Trade; 1/1/2003; ; 700+ words ; ...or fertilizers and on farms meeting ecological standards designed to reduce pollution...manager of Bolivia's Association of Ecological Producer Organizations, which represents...higher prices for products grown in an ecologically sound manner. Each year we go to the... Read more
New strategies for an evolving market at Turnberry: with the coffee business at an uncertain stage, audiences at the NCA's well-attended 2008 Convention heard about a range of strategies and niches that were ripe for development.(NCA Review)(National Coffee Association)
Magazine article from: Tea & Coffee Trade Journal; 6/1/2008; ; 700+ words ; ...guarantee that you have a business. While this new tool was helping some coffee origins to emphasise the cultural and agro-ecological aspects of their products, integrated with standards and traceability, the need to establish structures first--very difficult... Read more
The invasive bivalves Dreissena polymorpha and Limnoperna fortunei: parallels, contrasts, potential spread and invasion impacts.
Magazine article from: Journal of Shellfish Research; 4/1/2007; ; 700+ words ; ...and follow from the novel ecological niche they share, rather than...and has caused serious ecological and economic impacts both...life histories, share many ecological traits, and therefore may...consequence, they occupy a unique ecological niche, and perform as ... Read more