Chapters 3 and 4
... statistics place the counties near the upper middle of national trends, with Clackamas County exhibiting a higher than average median household income of $71,877 (compared to $58,400 for the more urban Multnomah county). Both counties exhibit higher than average levels of high school and college edu ...
... statistics place the counties near the upper middle of national trends, with Clackamas County exhibiting a higher than average median household income of $71,877 (compared to $58,400 for the more urban Multnomah county). Both counties exhibit higher than average levels of high school and college edu ...
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... conservation programs. The paper also examines the possibility to maintain and create new habitats, potentially associated with values emanating from historical landscapes, but in transformed and urbanized landscapes. Keywords: biodiversity; conservation biology; landscape aesthetics; semi-natural g ...
... conservation programs. The paper also examines the possibility to maintain and create new habitats, potentially associated with values emanating from historical landscapes, but in transformed and urbanized landscapes. Keywords: biodiversity; conservation biology; landscape aesthetics; semi-natural g ...
The need for integrative approaches to understand and conserve
... reduction of habitat in one season can be partially compensated by density-dependent responses in the other season. Nonetheless, the general conclusion is that habitat loss in the season with more stringent density-dependence has the greatest effect (Sutherland 1996). Thus, population limitation ove ...
... reduction of habitat in one season can be partially compensated by density-dependent responses in the other season. Nonetheless, the general conclusion is that habitat loss in the season with more stringent density-dependence has the greatest effect (Sutherland 1996). Thus, population limitation ove ...
Seasonal Spatial Patterns of Two Sympatric Frogs: California Red
... Abstract.—The introduced American Bullfrog (Lithobates catesbeianus) has been implicated in the decline of native amphibians. Bullfrogs have become widespread in California and are a threat to the native California Red-legged Frog (Rana draytonii). The two species are ecologically similar, and the b ...
... Abstract.—The introduced American Bullfrog (Lithobates catesbeianus) has been implicated in the decline of native amphibians. Bullfrogs have become widespread in California and are a threat to the native California Red-legged Frog (Rana draytonii). The two species are ecologically similar, and the b ...
Spatial variance of profundal and sublittoral invertebrate benthic
... lake zones, environmental variables related to eutrophication pressures (mid-lake total phosphorus and chlorophylla) were significant in structuring the invertebrate community (permutation test: p < 0.01). Three variables relating to morphological pressures (diversity of macrophyte growth forms, sum ...
... lake zones, environmental variables related to eutrophication pressures (mid-lake total phosphorus and chlorophylla) were significant in structuring the invertebrate community (permutation test: p < 0.01). Three variables relating to morphological pressures (diversity of macrophyte growth forms, sum ...
COSEWIC Assessment and Status Report on the Monarch Danaus
... egg, larva (or caterpillar), pupa (or chrysalis), and imago (or adult butterfly). Female Monarchs lay up to 500 eggs on the undersides of milkweed leaves. The caterpillar transforms into a chrysalis, metamorphoses, and emerges later as a butterfly. In most of southern Canada, the late summer adults ...
... egg, larva (or caterpillar), pupa (or chrysalis), and imago (or adult butterfly). Female Monarchs lay up to 500 eggs on the undersides of milkweed leaves. The caterpillar transforms into a chrysalis, metamorphoses, and emerges later as a butterfly. In most of southern Canada, the late summer adults ...
key species in a - Books and Journals
... of species with a generally broad salinity tolerance, but it is still unclear to what degree Baltic species have evolved significant local adaptations to a brackish environment. Johannesson and André (2006) showed that Baltic Sea populations have reduced genetic variation compared to Atlantic popula ...
... of species with a generally broad salinity tolerance, but it is still unclear to what degree Baltic species have evolved significant local adaptations to a brackish environment. Johannesson and André (2006) showed that Baltic Sea populations have reduced genetic variation compared to Atlantic popula ...
Debate 2 – Exotics Species and the Chesapeake Bay Group C
... human populations were increasing pollution loads on the Bay. The oyster diseases MSX and Dermo were discovered in the Bay in 1959; these parasites spread rapidly though the population killing many oysters in the process. This compounding of factors caused oyster populations to greatly decline. Thes ...
... human populations were increasing pollution loads on the Bay. The oyster diseases MSX and Dermo were discovered in the Bay in 1959; these parasites spread rapidly though the population killing many oysters in the process. This compounding of factors caused oyster populations to greatly decline. Thes ...
- American Institute of Science
... lack of an effectual vaccine or treatment for the disease makes control of its vectors as a consideration of primary importance. Mosquito eggs can survive drought conditions while harboring pathogens and perpetuate diseases throughout breeding season. Biological control of mosquitoes using vertebrat ...
... lack of an effectual vaccine or treatment for the disease makes control of its vectors as a consideration of primary importance. Mosquito eggs can survive drought conditions while harboring pathogens and perpetuate diseases throughout breeding season. Biological control of mosquitoes using vertebrat ...
Freshwater Mussels Pacific Northwest
... Mussels may also improve habitat quality and promote higher diversity of other benthic macroinvertebrates52,89,106. Their vertical and horizontal movements help stir sediments and increase the exchange of oxygen and nutrients between the sediment and water108. They serve a function similar to earthw ...
... Mussels may also improve habitat quality and promote higher diversity of other benthic macroinvertebrates52,89,106. Their vertical and horizontal movements help stir sediments and increase the exchange of oxygen and nutrients between the sediment and water108. They serve a function similar to earthw ...
Ecological gradients and relative abundance of native (Mytilus
... salinity microhabitats due to different influences of oceanic and estuarine conditions. Variation in the relative abundances of M. trossulus and M. galloprovincialis from site to site has led to the hypothesis that temperature and salinity drive the observed differences in distribution patterns among t ...
... salinity microhabitats due to different influences of oceanic and estuarine conditions. Variation in the relative abundances of M. trossulus and M. galloprovincialis from site to site has led to the hypothesis that temperature and salinity drive the observed differences in distribution patterns among t ...
An eDatabase search on "freshwater protected
... As well as being one of the most densely populated areas on Earth, Hong Kong also has the highest percentage of protected areas (38% of the 1098 km super(2) land area) of any administrative region in the Asia Pacific. Overlay of field records from a biodiversity survey of eight taxa (amphibians, rep ...
... As well as being one of the most densely populated areas on Earth, Hong Kong also has the highest percentage of protected areas (38% of the 1098 km super(2) land area) of any administrative region in the Asia Pacific. Overlay of field records from a biodiversity survey of eight taxa (amphibians, rep ...
The Relative Importance of Abiotic and Biotic Factors for Seedling
... Drought combined with warmer temperatures has caused extensive mortality in US southwest desert ecosystems. Disproportional mortality among long-lived shrub species can have dire consequences for community regeneration if novel recruitment is dependent on facilitated establishment. However, regenera ...
... Drought combined with warmer temperatures has caused extensive mortality in US southwest desert ecosystems. Disproportional mortality among long-lived shrub species can have dire consequences for community regeneration if novel recruitment is dependent on facilitated establishment. However, regenera ...
Important Bird Areas of the Caribbean Netherlands
... importantly the Red-billed Tropicbird and the Audubon’s Shearwater. In addition to legal designation, measures needed to protect the values of this IBA include eradication or control of predators such as cats and rats, and management of the garbage dump to limit the number of these predators. On Sab ...
... importantly the Red-billed Tropicbird and the Audubon’s Shearwater. In addition to legal designation, measures needed to protect the values of this IBA include eradication or control of predators such as cats and rats, and management of the garbage dump to limit the number of these predators. On Sab ...
Interrelations between sea urchins and spiny lobsters
... Size-frequency distributions The size-frequency distributions of Evechinus were bimodal at all 3 locations (Fig. 3). At all locations there was a peak in frequency between 15 and 40 mm TD (Fig. 3).All sea urchins in this size-class were cryptic. A trough in the size-frequency distribution of all 3 p ...
... Size-frequency distributions The size-frequency distributions of Evechinus were bimodal at all 3 locations (Fig. 3). At all locations there was a peak in frequency between 15 and 40 mm TD (Fig. 3).All sea urchins in this size-class were cryptic. A trough in the size-frequency distribution of all 3 p ...
Biodiversity PPT Revised
... rain forests even though they cover only 7 percent of the Earth’s land surface. • Unknown numbers of these species are disappearing as tropical forests are cleared for farming or cattle grazing. ...
... rain forests even though they cover only 7 percent of the Earth’s land surface. • Unknown numbers of these species are disappearing as tropical forests are cleared for farming or cattle grazing. ...
BfN-Skripten 375 - Bundesamt für Naturschutz
... 4.9.4 Key messages for focal ecosystems ................................................................ 63 ...
... 4.9.4 Key messages for focal ecosystems ................................................................ 63 ...
Agents of Pattern Formation: Disturbance Regimes
... confounded in there effects. This fact is perhaps best illustrated by an example. This example involves the whitebark pine ecosystem of the high elevation Rocky Mountains and a critical ecological triangle involving whitebark pines, Clarks nutcrackers and wildfire. ...
... confounded in there effects. This fact is perhaps best illustrated by an example. This example involves the whitebark pine ecosystem of the high elevation Rocky Mountains and a critical ecological triangle involving whitebark pines, Clarks nutcrackers and wildfire. ...
b 2 - Videolectures
... Population level: Introduction of a spatially explicit model for a plant population, applying it to pattern formation phenomena along environmental ...
... Population level: Introduction of a spatially explicit model for a plant population, applying it to pattern formation phenomena along environmental ...
Host-plant species modifies the diet of an omnivore feeding on three
... predatory mites and eggs of spider mites as the dependent variables. The initial number of eggs per species was introduced as a covariable, but it was not significant and thus removed from further analysis. Subsequently, we performed planned comparisons between predation on the two host plants withi ...
... predatory mites and eggs of spider mites as the dependent variables. The initial number of eggs per species was introduced as a covariable, but it was not significant and thus removed from further analysis. Subsequently, we performed planned comparisons between predation on the two host plants withi ...
Use of natural and created Spartina alterniflora salt marshes by
... Ocean Service tide gauge at Pier 21 In the Galveston Channel (Statlon Number 877-1450), and w e installed 2 temporary gauges, one in West Bay at Jamaica Beach a n d one In East Bay on Bolivar Peninsula (Fig. 1 ) . These temporary gauges consisted of data loggers with pressure transducers located in ...
... Ocean Service tide gauge at Pier 21 In the Galveston Channel (Statlon Number 877-1450), and w e installed 2 temporary gauges, one in West Bay at Jamaica Beach a n d one In East Bay on Bolivar Peninsula (Fig. 1 ) . These temporary gauges consisted of data loggers with pressure transducers located in ...
Mammal Research Institute Polish Academy of Sciences Ireneusz
... cavities. Bats chose both trees and hollows of specific location and size [9, 18]. Oaks and ash trees were inhabited most frequently [12, 18]. Hollow sizes, and temperatures measured inside the tree cavities indicated that bats would chose warm hollows [10], located high above the ground and whose d ...
... cavities. Bats chose both trees and hollows of specific location and size [9, 18]. Oaks and ash trees were inhabited most frequently [12, 18]. Hollow sizes, and temperatures measured inside the tree cavities indicated that bats would chose warm hollows [10], located high above the ground and whose d ...
Creating wildlife ponds in areas of public access
... Ponds designs in areas with public access On some sites it may be desirable to create ponds which people can have access to, but which also cater for wildlife, especially on sites where it is not possible to create multiple ponds for different user groups. It is possible to design ponds which reach ...
... Ponds designs in areas with public access On some sites it may be desirable to create ponds which people can have access to, but which also cater for wildlife, especially on sites where it is not possible to create multiple ponds for different user groups. It is possible to design ponds which reach ...
The biology of native and invasive Wild Boar (Sus scrofa) and the
... Mediterranean (Pinna et al. 2007). This is a large variety of plants to be eaten by a single species and includes, among others, Mediterranean scrub fruit (Pinna et al. 2007). Not only was vegetation found in the animals’ stomachs, but Wild Boar were also found to have three additional categories of ...
... Mediterranean (Pinna et al. 2007). This is a large variety of plants to be eaten by a single species and includes, among others, Mediterranean scrub fruit (Pinna et al. 2007). Not only was vegetation found in the animals’ stomachs, but Wild Boar were also found to have three additional categories of ...
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.