Predators of the destructive sea urchin Strongylocentrotus
... barren grounds are characterized by naked substrates and a relatively low biodiversity (Sala & Zabala 1996, Ling 2008), more than 200 invertebrate species may be found per m2 within a kelp forest (Christie et al. 2003). Predation on newly settled sea urchins may thus represent an important life-hist ...
... barren grounds are characterized by naked substrates and a relatively low biodiversity (Sala & Zabala 1996, Ling 2008), more than 200 invertebrate species may be found per m2 within a kelp forest (Christie et al. 2003). Predation on newly settled sea urchins may thus represent an important life-hist ...
California Partners in Flight - Point Blue Conservation Science
... whose requirements represent a spectrum of habitat characteristics and types. These species help define which spatial and compositional attributes characterize a healthy ecosystem and guide the development of appropriate management regimes. A landscape designed and managed to meet the focal species’ ...
... whose requirements represent a spectrum of habitat characteristics and types. These species help define which spatial and compositional attributes characterize a healthy ecosystem and guide the development of appropriate management regimes. A landscape designed and managed to meet the focal species’ ...
Sage Grouse Population Management Risks, Conservation
... relatively intact, with little habitat fragmentation, and range conditions are relatively good. Cheat grass occurs, but in low amounts. Much of the PMU is above the elevation at which cheat grass is highly competitive, and current fire monitoring shows little cheat grass on recently burned areas. In ...
... relatively intact, with little habitat fragmentation, and range conditions are relatively good. Cheat grass occurs, but in low amounts. Much of the PMU is above the elevation at which cheat grass is highly competitive, and current fire monitoring shows little cheat grass on recently burned areas. In ...
Management of Kachemak Bay Salmon
... in their juvenile stages to larger fish such as herring when they are adults. This food source, along with pristine fresh water and habitats that offer deep pools safe from predators and a balance of fresh and salt waters with temperatures consistent for their growth, need to be available for succes ...
... in their juvenile stages to larger fish such as herring when they are adults. This food source, along with pristine fresh water and habitats that offer deep pools safe from predators and a balance of fresh and salt waters with temperatures consistent for their growth, need to be available for succes ...
PPT - Wildlife Ecology and Conservation
... US Fish and Wildlife Service at http://ecos.fws.gov/speciesProfile/profile/speciesProfile.action?spcode=A04K Mammals of Texas online edition at http://www.nsrl.ttu.edu/tmot1/odochemi.htm Mule Deer Foundation at http://www.muledeer.org/hunting Mule Deer Working Group at http://www.muledeerworkinggrou ...
... US Fish and Wildlife Service at http://ecos.fws.gov/speciesProfile/profile/speciesProfile.action?spcode=A04K Mammals of Texas online edition at http://www.nsrl.ttu.edu/tmot1/odochemi.htm Mule Deer Foundation at http://www.muledeer.org/hunting Mule Deer Working Group at http://www.muledeerworkinggrou ...
Effects of Toxic Cyanobacteria (Microcystis Aeruginosa)
... specific effects of these factors and generalizing them can be challenging (Kononen, 2001; Anderson et al., 2002; Keddy 2010). Climate change: Impacts on Aquatic Ecosystems: Climate change is currently causing significant alterations in physical, chemical, and biological aspects of aquatic systems a ...
... specific effects of these factors and generalizing them can be challenging (Kononen, 2001; Anderson et al., 2002; Keddy 2010). Climate change: Impacts on Aquatic Ecosystems: Climate change is currently causing significant alterations in physical, chemical, and biological aspects of aquatic systems a ...
Yuma Clapper Rail
... over different seasonal periods (i.e., early breeding, late breeding, post-breeding, early winter, and late winter), but that some combination of cattail and bulrush accounted for the majority of the observations across all periods. Combining data from the two study sites, use of cattail/bulrush hab ...
... over different seasonal periods (i.e., early breeding, late breeding, post-breeding, early winter, and late winter), but that some combination of cattail and bulrush accounted for the majority of the observations across all periods. Combining data from the two study sites, use of cattail/bulrush hab ...
Effects of patch attributes, barriers, and distance between patches
... Likewise, for the forest carabid Abax parallelepipedus distance to the nearest occupied site was a highly significant predictor of patch occupancy, and the inclusion of habitat structure and quality as explanatory variables improved the predictive model only slightly (Petit and Burel 1998). However, ...
... Likewise, for the forest carabid Abax parallelepipedus distance to the nearest occupied site was a highly significant predictor of patch occupancy, and the inclusion of habitat structure and quality as explanatory variables improved the predictive model only slightly (Petit and Burel 1998). However, ...
the role of microbial endosymbionts in sorghum halepense
... Invasive plants can profoundly alter ecosystem processes, and tremendous economic costs are often associated with these disturbances. Attributes like higher growth rates, increased biomass, and enhanced chemical defenses have been documented in many invasive plants. When expanding into new ranges, t ...
... Invasive plants can profoundly alter ecosystem processes, and tremendous economic costs are often associated with these disturbances. Attributes like higher growth rates, increased biomass, and enhanced chemical defenses have been documented in many invasive plants. When expanding into new ranges, t ...
Piping Plover (Charadrius melodus circumcinctus)
... Recovery planning is intended to benefit species at risk and biodiversity in general. However, it is recognized that strategies may also inadvertently lead to environmental effects beyond the intended benefits. The planning process based on national guidelines directly incorporates consideration of ...
... Recovery planning is intended to benefit species at risk and biodiversity in general. However, it is recognized that strategies may also inadvertently lead to environmental effects beyond the intended benefits. The planning process based on national guidelines directly incorporates consideration of ...
Nutrient Effects on Spring Flora and Fauna
... Why the focus on nitrate? Nitrate is a nitrogen compound that occurs naturally in aquatic systems, including Florida’s springs. Aquatic plants and algae assimilate nitrate as a way to gain nitrogen, which is one of the elements that contributes to their growth and production. Concerns arise when nit ...
... Why the focus on nitrate? Nitrate is a nitrogen compound that occurs naturally in aquatic systems, including Florida’s springs. Aquatic plants and algae assimilate nitrate as a way to gain nitrogen, which is one of the elements that contributes to their growth and production. Concerns arise when nit ...
Landscapes and species-analyzing the ecological Gaps
... PAs. Still we see an increasing loss of the world’s biological heritage, the species. Clearly something is missing and many efforts have not yielded desired results. Biodiversity is suffering. ...
... PAs. Still we see an increasing loss of the world’s biological heritage, the species. Clearly something is missing and many efforts have not yielded desired results. Biodiversity is suffering. ...
Docket No. FWS–HQ–ES–2
... likely or how soon extinction would be expected to occur absent listing, we must evaluate factors that contribute to the likelihood and time scale for extinction. We therefore consider information such as: (1) The number of populations or extent of range of the species affected by the threat(s), or ...
... likely or how soon extinction would be expected to occur absent listing, we must evaluate factors that contribute to the likelihood and time scale for extinction. We therefore consider information such as: (1) The number of populations or extent of range of the species affected by the threat(s), or ...
THE RELATIONSHIP BETWEEN PRODUCTIVITY AND SPECIES
... of existing functional groups. Lawton (102) proposed a model in which species may have strong, idiosyncratic effects on ecosystems. If this is the case, there is no predictable effect of species richness per se on ecosystem function. However, if the properties or functional traits of individual spec ...
... of existing functional groups. Lawton (102) proposed a model in which species may have strong, idiosyncratic effects on ecosystems. If this is the case, there is no predictable effect of species richness per se on ecosystem function. However, if the properties or functional traits of individual spec ...
THE RELATIONSHIP BETWEEN PRODUCTIVITY AND SPECIES
... of existing functional groups. Lawton (102) proposed a model in which species may have strong, idiosyncratic effects on ecosystems. If this is the case, there is no predictable effect of species richness per se on ecosystem function. However, if the properties or functional traits of individual spec ...
... of existing functional groups. Lawton (102) proposed a model in which species may have strong, idiosyncratic effects on ecosystems. If this is the case, there is no predictable effect of species richness per se on ecosystem function. However, if the properties or functional traits of individual spec ...
PDF
... the most commonly measured ecological traits, but its direct functional meaning is not entirely clear. One reason might be that wood density is just one value describing a complex structure with multiple functions. On the basis that density is directly determined by anatomical structure, several stu ...
... the most commonly measured ecological traits, but its direct functional meaning is not entirely clear. One reason might be that wood density is just one value describing a complex structure with multiple functions. On the basis that density is directly determined by anatomical structure, several stu ...
Emerging patterns in the comparative analysis of phylogenetic
... relevant ones. For example, in plants it is unlikely that clades defined by floral morphological characters should contain species that also have consistent edaphic preferences. Rather, sub- or super-clades might make more coherent ecological units. Similarly, sets of organisms with the same taxonom ...
... relevant ones. For example, in plants it is unlikely that clades defined by floral morphological characters should contain species that also have consistent edaphic preferences. Rather, sub- or super-clades might make more coherent ecological units. Similarly, sets of organisms with the same taxonom ...
Caribbean acroporid coral hybrids are viable across life history stages
... viable than the parental species and have suffered less mortality in recent decades. A study examining prezygotic barriers through the frequency of hybrid embryo formation in the presence and absence of sperm competition found species-specific differences in gametic incompatibilities (Fogarty et al. ...
... viable than the parental species and have suffered less mortality in recent decades. A study examining prezygotic barriers through the frequency of hybrid embryo formation in the presence and absence of sperm competition found species-specific differences in gametic incompatibilities (Fogarty et al. ...
KILHAM, PETER, AND ROBERT E. HECKY. Comparative ecology of
... ences regarding the use of the Monod equation and various applications of the Michaelis-Menten equation, but there is apparent agreement that the Droop equation (Table 1) can be used for most limiting nutrients. However, the equation applies less well as the nutrient in question occupies a larger fr ...
... ences regarding the use of the Monod equation and various applications of the Michaelis-Menten equation, but there is apparent agreement that the Droop equation (Table 1) can be used for most limiting nutrients. However, the equation applies less well as the nutrient in question occupies a larger fr ...
Regional Conservation Strategy
... Understanding Biodiversity........................................................................................................................... 3 What Is Biodiversity?.......................................................................................................................... ...
... Understanding Biodiversity........................................................................................................................... 3 What Is Biodiversity?.......................................................................................................................... ...
Abiotic and biotic factors influencing the assemblage of tadpoles
... wallum heathland. Several environmental variables influenced the relative abundance and occupancy of L. olongburensis tadpoles and adults. For tadpoles, these variables included pH, water depth and turbidity while variables for adults included pH, water depth, salinity and sedge cover. Environmental ...
... wallum heathland. Several environmental variables influenced the relative abundance and occupancy of L. olongburensis tadpoles and adults. For tadpoles, these variables included pH, water depth and turbidity while variables for adults included pH, water depth, salinity and sedge cover. Environmental ...
A gentle depilation of the niche: Dicean
... species concerned occupies for shelter, for breeding sites, and for other activities, the food that it eats, and all the other features of the ecosystem that it utilizes [my emphasis]. The term does not include, except indirectly, any consideration of the functions that the species serves in the com ...
... species concerned occupies for shelter, for breeding sites, and for other activities, the food that it eats, and all the other features of the ecosystem that it utilizes [my emphasis]. The term does not include, except indirectly, any consideration of the functions that the species serves in the com ...
Sharing the Land with Pinyon-Juniper Birds
... The soils in some pinyon-juniper woodlands are held in place by a biological soil crust --- a complex community of mosses, lichens, fungi, and algae forming a soil surface layer up to several inches thick. This gray-green Junipers are also conifers but with overlapping scales for crust is firm enoug ...
... The soils in some pinyon-juniper woodlands are held in place by a biological soil crust --- a complex community of mosses, lichens, fungi, and algae forming a soil surface layer up to several inches thick. This gray-green Junipers are also conifers but with overlapping scales for crust is firm enoug ...
DRECP Species Account
... over different seasonal periods (i.e., early breeding, late breeding, post-breeding, early winter, and late winter), but that some combination of cattail and bulrush accounted for the majority of the observations across all periods. Combining data from the two study sites, use of cattail/bulrush hab ...
... over different seasonal periods (i.e., early breeding, late breeding, post-breeding, early winter, and late winter), but that some combination of cattail and bulrush accounted for the majority of the observations across all periods. Combining data from the two study sites, use of cattail/bulrush hab ...
An assessment of the relative importance of Wildlife Management Areas... the conservation of grassland songbirds in south-western Manitoba
... 1. Introduction-------------------------------------------------------------------------------------------- - 1 1.1 Context ---------------------------------------------------------------------------------------------- - 1 1.2 Problem statement ------------------------------------------------------- ...
... 1. Introduction-------------------------------------------------------------------------------------------- - 1 1.1 Context ---------------------------------------------------------------------------------------------- - 1 1.2 Problem statement ------------------------------------------------------- ...
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.