The plateau pika (Ochotona curzoniae) is a keystone species for
... Jiang & Xia (1985, 1987) determined that the foraging of small and moderate populations of plateau pikas is selective and may play an important role in the stabilization of the alpine meadow vegetational community. Studies on the similar Daurian pika have shown that their digging activity loosens an ...
... Jiang & Xia (1985, 1987) determined that the foraging of small and moderate populations of plateau pikas is selective and may play an important role in the stabilization of the alpine meadow vegetational community. Studies on the similar Daurian pika have shown that their digging activity loosens an ...
PSG 2012 Hawaii abstracts
... Tropical oceans (surface temperatures ≥ 23° C) include a greater proportion of the world’s oceans than any other. Low productivity is a defining feature of these ecosystems. “Tropical” seabirds include species that breed in tropical latitudes and species that feed there. For seabirds that feed in tr ...
... Tropical oceans (surface temperatures ≥ 23° C) include a greater proportion of the world’s oceans than any other. Low productivity is a defining feature of these ecosystems. “Tropical” seabirds include species that breed in tropical latitudes and species that feed there. For seabirds that feed in tr ...
Jump Allotment Rangeland Health Standards Assessment
... beginning to cause negative affects in some areas. The junipers do provide habitat for some species but also displace others. This allotment is considered deer winter range and it also supports many other native mammals including woodrats, rabbits, coyotes, ground squirrels, and mice. The vegetation ...
... beginning to cause negative affects in some areas. The junipers do provide habitat for some species but also displace others. This allotment is considered deer winter range and it also supports many other native mammals including woodrats, rabbits, coyotes, ground squirrels, and mice. The vegetation ...
Quantifying Terrestrial Habitat Loss and Fragmentation: A Protocol
... Many scientists believe that the earth is facing a mass extinction (Lawton and May 1995, Vitousek et al. 1997, Wilson 1999, Myers and Knoll 2001, Balmford et al. 2003). Current global extinction rates for animals and plants are as much as 1,000 times higher than the background rate in the fossil rec ...
... Many scientists believe that the earth is facing a mass extinction (Lawton and May 1995, Vitousek et al. 1997, Wilson 1999, Myers and Knoll 2001, Balmford et al. 2003). Current global extinction rates for animals and plants are as much as 1,000 times higher than the background rate in the fossil rec ...
On the Status of Vermin - DigitalCommons@CalPoly
... that this is, in fact, what has happened.) The lack of coyotes is problematic because if there are not as many natural predators, then there will potentially be too many survivors and this is the case for prairie dogs. By eliminating the prairie dogs natural predators, they have been able to breed a ...
... that this is, in fact, what has happened.) The lack of coyotes is problematic because if there are not as many natural predators, then there will potentially be too many survivors and this is the case for prairie dogs. By eliminating the prairie dogs natural predators, they have been able to breed a ...
Colonization of artificial seagrass versus time and distance from
... and species richness peaked in 4 to 8 d , while abundances of individual species continued to fluctuate. Colonization was rapid at all distances from the seagrass bed. Although gastropod abundance decreased with increasing distance, abundance of crustaceans increased with distance. At the margin of ...
... and species richness peaked in 4 to 8 d , while abundances of individual species continued to fluctuate. Colonization was rapid at all distances from the seagrass bed. Although gastropod abundance decreased with increasing distance, abundance of crustaceans increased with distance. At the margin of ...
Bathurst 2011 - Australasian Wildlife Management Society
... It gives me great pleasure to extend an invitation to you for the 24th Conference and Annual General meeting of the Australasian Wildlife Management Society. This conference will focus on the very important aspect of community and wildlife management and the venue is perfectly placed for such a foru ...
... It gives me great pleasure to extend an invitation to you for the 24th Conference and Annual General meeting of the Australasian Wildlife Management Society. This conference will focus on the very important aspect of community and wildlife management and the venue is perfectly placed for such a foru ...
Paget Marsh - Bermuda Department of Education
... beaches. Over the course of 400,000 years, percolation of rain turned the oldest of these sandy hills into well-cemented rock with cave formations. Paget Marsh, an interdune low, is enclosed by older hills on the north and the south but connected by caves to Hamilton Harbour. Thus the marsh began as ...
... beaches. Over the course of 400,000 years, percolation of rain turned the oldest of these sandy hills into well-cemented rock with cave formations. Paget Marsh, an interdune low, is enclosed by older hills on the north and the south but connected by caves to Hamilton Harbour. Thus the marsh began as ...
Habitat Characteristics Influencing Resident and Over
... Among all the guilds of bird species in North America, none have collectively witnessed population declines that rival those exhibited by the suit of species that are dependent upon savannah, prairie, or grassland ecosystems (Knopf 1994, Samson and Knopf 1994, Brawn et al. 2001, Vickery and Herkert ...
... Among all the guilds of bird species in North America, none have collectively witnessed population declines that rival those exhibited by the suit of species that are dependent upon savannah, prairie, or grassland ecosystems (Knopf 1994, Samson and Knopf 1994, Brawn et al. 2001, Vickery and Herkert ...
Ecological Best-Practice Livestock Production Guidelines for the
... activities within the livestock production industry. The focus of these guidelines relates specifically to activities associated with the ecological and conservation impacts of livestock production in its‟ broadest sense. The various activities addressed in the guidelines are considered primarily wi ...
... activities within the livestock production industry. The focus of these guidelines relates specifically to activities associated with the ecological and conservation impacts of livestock production in its‟ broadest sense. The various activities addressed in the guidelines are considered primarily wi ...
stc5_12_ssap_btg_0
... Wymenga 2000, Teunissen et al. 2004). The present annual decline is estimated at c. 5% on a national scale (Teunissen & Soldaat 2006), resulting in a current population of c. 55,000 pairs (SOVON, W. Teunissen pers. com.). This number may even be lower, as in Fryslân, where half of the Dutch populati ...
... Wymenga 2000, Teunissen et al. 2004). The present annual decline is estimated at c. 5% on a national scale (Teunissen & Soldaat 2006), resulting in a current population of c. 55,000 pairs (SOVON, W. Teunissen pers. com.). This number may even be lower, as in Fryslân, where half of the Dutch populati ...
Environmental responses, not species interactions
... theory has been developed by focusing on simple limiting cases in which only one of these three drivers operates. For example, in a community composed of large populations (no demographic stochasticity) with weak interspecific interations, community-wide species synchrony should be determined by the ...
... theory has been developed by focusing on simple limiting cases in which only one of these three drivers operates. For example, in a community composed of large populations (no demographic stochasticity) with weak interspecific interations, community-wide species synchrony should be determined by the ...
Southeast United States Regional Waterbird Conservation Plan
... historically supported large and well-dispersed waterbird populations. Moreover, the adjacent waters of the Gulf of Mexico and Atlantic Ocean are also important habitat for waterbirds feeding on fish and other marine organisms. Conservation and management activities undertaken in the Southeast U.S. ...
... historically supported large and well-dispersed waterbird populations. Moreover, the adjacent waters of the Gulf of Mexico and Atlantic Ocean are also important habitat for waterbirds feeding on fish and other marine organisms. Conservation and management activities undertaken in the Southeast U.S. ...
Guidelines for managing the endangered Growling Grass Frog in
... These guidelines are designed to facilitate the development of such conservation programs. Based on nearly a decade of research on the population dynamics and habitat requirements of L. raniformis on the urban fringe of Melbourne, they describe wetland-level and landscape-level objectives for habita ...
... These guidelines are designed to facilitate the development of such conservation programs. Based on nearly a decade of research on the population dynamics and habitat requirements of L. raniformis on the urban fringe of Melbourne, they describe wetland-level and landscape-level objectives for habita ...
Dinger EC, Hendrickson DA, Winsborough BM, Marks JC (2006)
... but larval fishes, and larger (6.5 mm) cages to exclude all larger fishes (including the molluscivorous and omnivorous endemic polymorphic cichlid, Herichthys minckleyi), but allow access to all sizes of the abundant endemic pupfish, Cyprinodon bifasciatus. No effects of treatments on invertebrate densi ...
... but larval fishes, and larger (6.5 mm) cages to exclude all larger fishes (including the molluscivorous and omnivorous endemic polymorphic cichlid, Herichthys minckleyi), but allow access to all sizes of the abundant endemic pupfish, Cyprinodon bifasciatus. No effects of treatments on invertebrate densi ...
Fungal virulence, vertebrate endothermy, and dinosaur extinction: is there a connection? Commentary
... (Money, 2004). In contrast, the ability to attach to mammalian tissues and survive immune attack is unlikely to have been selected by direct interactions with mammalian hosts since these organisms are usually soil dwellers that infrequently come into contact with mammals. However, soil fungi must fr ...
... (Money, 2004). In contrast, the ability to attach to mammalian tissues and survive immune attack is unlikely to have been selected by direct interactions with mammalian hosts since these organisms are usually soil dwellers that infrequently come into contact with mammals. However, soil fungi must fr ...
SoE 08 Part 4.3 Inland Waters
... condition across almost half of the major rivers and tributaries assessed. • The total index of abundance for waterbirds in eastern Australia has shown a declining trend over past decades, with 2007 having the second-lowest abundance on record. • Commitments to provide environmental water were quali ...
... condition across almost half of the major rivers and tributaries assessed. • The total index of abundance for waterbirds in eastern Australia has shown a declining trend over past decades, with 2007 having the second-lowest abundance on record. • Commitments to provide environmental water were quali ...
Network structure and robustness of marine food webs
... Previous studies suggest that food-web theory has yet to account for major differences between marine food webs and the trophic structure of other ecosystems. We examined this issue by analyzing the structure of food webs for Benguela (South Africa), a Caribbean reef, and the Northeast US shelf with ...
... Previous studies suggest that food-web theory has yet to account for major differences between marine food webs and the trophic structure of other ecosystems. We examined this issue by analyzing the structure of food webs for Benguela (South Africa), a Caribbean reef, and the Northeast US shelf with ...
Coevolution of Cycads and Dinosaurs
... assigned to extant genera, and (2) each leaf form typically occurs only within a single geologic formation, often restricted to a single locality. These features represent island-like biogeographic patterns (MacArthur and Wilson 1967; Quammen 1996) where isolated populations gave rise to great taxon ...
... assigned to extant genera, and (2) each leaf form typically occurs only within a single geologic formation, often restricted to a single locality. These features represent island-like biogeographic patterns (MacArthur and Wilson 1967; Quammen 1996) where isolated populations gave rise to great taxon ...
Quality and quantity of particulate organic matter and nutrition of
... and exerting enormous pressure on the adjacent marine environment, including harbour waters. Nutrient concentrations, especially nitrate, have increased gradually over the years with a simultaneous decrease in dissolved oxygen. Apart from receiving local sewage and industrial waste, the harbour is a ...
... and exerting enormous pressure on the adjacent marine environment, including harbour waters. Nutrient concentrations, especially nitrate, have increased gradually over the years with a simultaneous decrease in dissolved oxygen. Apart from receiving local sewage and industrial waste, the harbour is a ...
parks victoria technical series ecosystem conceptual models for
... This report presents ecosystem conceptual models for seven of the nine natural ecosystems that occur across Victoria. For each of these systems the conceptual models identify values, threats, processes and drivers of ecosystem health, as well as potential management responses/ interventions. We aim ...
... This report presents ecosystem conceptual models for seven of the nine natural ecosystems that occur across Victoria. For each of these systems the conceptual models identify values, threats, processes and drivers of ecosystem health, as well as potential management responses/ interventions. We aim ...
- Wiley Online Library
... architecture. The spatial distribution of grasses over a landscape is determined by the interplay between biotic and abiotic processes, such as soil quality, water, fire, grazing pressure and seed dispersal (Anderson et al. 2007a; Anderson, Ritchie & McNaughton 2007b; Blair 1997; Bond & Keeley 2005). ...
... architecture. The spatial distribution of grasses over a landscape is determined by the interplay between biotic and abiotic processes, such as soil quality, water, fire, grazing pressure and seed dispersal (Anderson et al. 2007a; Anderson, Ritchie & McNaughton 2007b; Blair 1997; Bond & Keeley 2005). ...
defining and measuring trophic role similarity
... based on predator and prey relations. The Yodzis–Winemiller approach is an important advance because it formalizes a fundamental concept (providing all the associated benefits of precision and measurability), and because it incorporates connections up and down the food web. However, it also retains a ...
... based on predator and prey relations. The Yodzis–Winemiller approach is an important advance because it formalizes a fundamental concept (providing all the associated benefits of precision and measurability), and because it incorporates connections up and down the food web. However, it also retains a ...
Conservation strategy for the Mekong giant catfish
... priority should be to protect this habitat. There have been some suggestions that a second spawning area may be located neat the Cambodian town of Stung Treng, but this has not been confirmed by direct observations. Captive breeding. The captive population of MGC maintained by the Thai Department of ...
... priority should be to protect this habitat. There have been some suggestions that a second spawning area may be located neat the Cambodian town of Stung Treng, but this has not been confirmed by direct observations. Captive breeding. The captive population of MGC maintained by the Thai Department of ...
San Joaquin Kit Fox - Contra Costa County
... capacity of San Joaquin kit foxes throughout its range. Livestock grazing is not thought to be detrimental to kit foxes (Morrell 1975, Orloff et al. 1986), but it may affect the number of prey species available, depending on the intensity of grazing (Williams et al. 1998). In some areas, livestock g ...
... capacity of San Joaquin kit foxes throughout its range. Livestock grazing is not thought to be detrimental to kit foxes (Morrell 1975, Orloff et al. 1986), but it may affect the number of prey species available, depending on the intensity of grazing (Williams et al. 1998). In some areas, livestock g ...
Habitat
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A habitat is an ecological or environmental area that is inhabited by human, a particular species of animal, plant, or other type of organism.A place where a living thing lives is its habitat. It is a place where it can find food, shelter, protection and mates for reproduction. It is the natural environment in which an organism lives, or the physical environment that surrounds a species population.A habitat is made up of physical factors such as soil, moisture, range of temperature, and availability of light as well as biotic factors such as the availability of food and the presence of predators. A habitat is not necessarily a geographic area—for a parasitic organism it is the body of its host, part of the host's body such as the digestive tract, or a cell within the host's body.