Thrall, P. H., M. E. Hochberg, J. J. Burdon and J. D. Bever. 2007
... because most species interact with suites of other species that vary dynamically across geographical landscapes, that coevolutionary processes can be important in organising communities and maintaining variability within specific interactions, such as mutualisms or host–parasite systems [6]. For exa ...
... because most species interact with suites of other species that vary dynamically across geographical landscapes, that coevolutionary processes can be important in organising communities and maintaining variability within specific interactions, such as mutualisms or host–parasite systems [6]. For exa ...
Keystone Species - Ask A Biologist
... think and work, and this really impinges on why things are endangered and what we can do to keep them from being endangered, and to bring some species back that may be rare in the world today. Dr. Biology: So when you talk about biodiversity, we are actually talking about keeping the breadth of many ...
... think and work, and this really impinges on why things are endangered and what we can do to keep them from being endangered, and to bring some species back that may be rare in the world today. Dr. Biology: So when you talk about biodiversity, we are actually talking about keeping the breadth of many ...
Chapter 4 Notes - Lincoln High School
... Succession follows severe disturbance § Secondary succession = a disturbance dramatically alters, but does not destroy, all local organisms § The remaining organisms and soil form “building blocks” that help shape the process of succession § Fires, hurricanes, farming, logging ...
... Succession follows severe disturbance § Secondary succession = a disturbance dramatically alters, but does not destroy, all local organisms § The remaining organisms and soil form “building blocks” that help shape the process of succession § Fires, hurricanes, farming, logging ...
Salt Marsh Secrets
... the seeds carry the population to the next year. FALL: The seeds of SMBB remain on the plants or fall to the ground. We don’t know how long SMBB seeds can stay dormant (inactive). From lab tests, there is some evidence that seeds can stay viable (alive) for a decade. But in the salt marsh, there are ...
... the seeds carry the population to the next year. FALL: The seeds of SMBB remain on the plants or fall to the ground. We don’t know how long SMBB seeds can stay dormant (inactive). From lab tests, there is some evidence that seeds can stay viable (alive) for a decade. But in the salt marsh, there are ...
pers. comm.).
... Eggs are laid in cold water typically less than 16" C (Jennings 1988). R. a. draytonii embryos probably have similar temperature requirements to the related R. a. aurora, which has a critical thermal maximum of 2 l oC (Nussbaum et al. 1983:157-161). This intolerance of high temperatures is an import ...
... Eggs are laid in cold water typically less than 16" C (Jennings 1988). R. a. draytonii embryos probably have similar temperature requirements to the related R. a. aurora, which has a critical thermal maximum of 2 l oC (Nussbaum et al. 1983:157-161). This intolerance of high temperatures is an import ...
Host ontogeny and the temporal decay of similarity in parasite
... Here, we argue that, in addition to geographic, genetic and phylogenetic distances, similarity in parasite communities should also decay as a function of ontogenetic distances. Two age classes of hosts from the same population are separated by developmental time, just as two host populations are sep ...
... Here, we argue that, in addition to geographic, genetic and phylogenetic distances, similarity in parasite communities should also decay as a function of ontogenetic distances. Two age classes of hosts from the same population are separated by developmental time, just as two host populations are sep ...
WILD226756-JuneNewsletter REV - Australian Wildlife Conservancy
... A profile of the Banded Hare-wallaby Few Australians have been fortunate enough to see a Banded Hare-wallaby (Lagostrophus fasciatus) in the wild. However, it was one of the earliest macropods known to science, with a description from Shark Bay by William Dampier in 1699, and specimens taken in 1801 ...
... A profile of the Banded Hare-wallaby Few Australians have been fortunate enough to see a Banded Hare-wallaby (Lagostrophus fasciatus) in the wild. However, it was one of the earliest macropods known to science, with a description from Shark Bay by William Dampier in 1699, and specimens taken in 1801 ...
The vulnerability of provincially rare species (species-at
... Jefferson salamander (Ambystoma jeffersonianum) were all scored as moderately vulnerable species. Key vulnerabilities associated with many of these species in the Lake Simcoe watershed included their specialized life history requirements, limited dispersal capabilities coupled with many barriers to ...
... Jefferson salamander (Ambystoma jeffersonianum) were all scored as moderately vulnerable species. Key vulnerabilities associated with many of these species in the Lake Simcoe watershed included their specialized life history requirements, limited dispersal capabilities coupled with many barriers to ...
Factsheet - glossy black cockatoo (PDF - 337KB)
... Since European settlement, a major threat to the survival of the glossy black-cockatoo is the clearing of casuarina trees in woodland areas, and the loss of mature eucalypts for nest hollows. The Riverina in NSW is one area in the bird’s range that has suffered a major decline in population due to t ...
... Since European settlement, a major threat to the survival of the glossy black-cockatoo is the clearing of casuarina trees in woodland areas, and the loss of mature eucalypts for nest hollows. The Riverina in NSW is one area in the bird’s range that has suffered a major decline in population due to t ...
Monarch Watch - WordPress.com
... their journey north again in the spring. Most monarch butterflies live about two to four weeks, eating and reproducing the whole time. • There are several theories about how monarchs that have never been to Mexico find the traditional roost the following fall. They may orient themselves based on the ...
... their journey north again in the spring. Most monarch butterflies live about two to four weeks, eating and reproducing the whole time. • There are several theories about how monarchs that have never been to Mexico find the traditional roost the following fall. They may orient themselves based on the ...
Hammock Homes for Hangouts
... solely on the production of timber, pulpwood, and other products may overlook the impact on the natural environment. However, through the use of Best Management Practices (BMPs ) the natural integrity of these valuable ecosystems can be maintained. Extensive livestock grazing may also harm the envir ...
... solely on the production of timber, pulpwood, and other products may overlook the impact on the natural environment. However, through the use of Best Management Practices (BMPs ) the natural integrity of these valuable ecosystems can be maintained. Extensive livestock grazing may also harm the envir ...
"Methods of Speciation in Tropical Reef Fish," Rollins
... flow from location to location. A species with pelagic larvae may not necessarily have enormous, wide ranging populations (Ehrlich, 1975). Many long lived planktonic larvae may actually stay within the vicinity of the area where they originate due to the varied behavioral factors of both larvae and ...
... flow from location to location. A species with pelagic larvae may not necessarily have enormous, wide ranging populations (Ehrlich, 1975). Many long lived planktonic larvae may actually stay within the vicinity of the area where they originate due to the varied behavioral factors of both larvae and ...
Pimm_pages 1..10 - Department of Geographical Sciences
... In practice, l and m may vary in complex ways. Estimating the average diversification rate, l – m, requires only modest data. Whether one can separate extinction from speciation rates by using species numbers over time is controversial (20, 21) and an area of active research that requires carefully ...
... In practice, l and m may vary in complex ways. Estimating the average diversification rate, l – m, requires only modest data. Whether one can separate extinction from speciation rates by using species numbers over time is controversial (20, 21) and an area of active research that requires carefully ...
Case study on orchid exports from Lao PDR
... • How many species of orchid do companies need to cultivate at their nurseries? • Where are the sources of mother plants? • What is thestatus of populations occurring in the area? What about from other locations around the country? • What are their correct scientific names? How to find their scienti ...
... • How many species of orchid do companies need to cultivate at their nurseries? • Where are the sources of mother plants? • What is thestatus of populations occurring in the area? What about from other locations around the country? • What are their correct scientific names? How to find their scienti ...
Spatiotemporal variation in functional and taxonomic organization of
... dynamic and complex. Biogeographic and historical constraints cause many of these systems to be unique and create difficulty in predicting compositional changes in fish assemblages. However, each system appears to comprise similar functional groupings despite phylogenetic differences. I hypothesized ...
... dynamic and complex. Biogeographic and historical constraints cause many of these systems to be unique and create difficulty in predicting compositional changes in fish assemblages. However, each system appears to comprise similar functional groupings despite phylogenetic differences. I hypothesized ...
Symbiosis Activity
... Two individuals of the same or different species may interact in a variety of different ways. A very specific interaction that may occur between the organisms is defined as symbiosis, a close, coevolutionary association between one species (host) and another species (symbiont). Species may interact ...
... Two individuals of the same or different species may interact in a variety of different ways. A very specific interaction that may occur between the organisms is defined as symbiosis, a close, coevolutionary association between one species (host) and another species (symbiont). Species may interact ...
are microhabitat preferences of coexisting species under selection
... complete range of potential nesting microhabitats available within the territory of each individual. Thus, I assume that the frequency that a microhabitat type is chosen represents preference, such that the most frequently chosen microhabitat is the preferred one for each bird species in this study ...
... complete range of potential nesting microhabitats available within the territory of each individual. Thus, I assume that the frequency that a microhabitat type is chosen represents preference, such that the most frequently chosen microhabitat is the preferred one for each bird species in this study ...
Plant species traits are the predominant control on
... senescence are associated with the diversity of plant resource-acquisition strategies in a given biome (Aerts 1996; Reich et al. 1997; Aerts & Chapin 2000; Grime 2001; Diaz et al. 2004; Wright et al. 2004). Green leaf traits are modulated only modestly by climate (Wright et al. 2005), and over 40% o ...
... senescence are associated with the diversity of plant resource-acquisition strategies in a given biome (Aerts 1996; Reich et al. 1997; Aerts & Chapin 2000; Grime 2001; Diaz et al. 2004; Wright et al. 2004). Green leaf traits are modulated only modestly by climate (Wright et al. 2005), and over 40% o ...
User-friendly guide for using benthic ecological
... Pelagic communities are useful in detecting changes at large scale, but their high spatial heterogeneity and the water masses mobility invalidate them when detecting local effects. Besides, the high changing rates in plankton communities makes its response to be nearly simultaneous with environmenta ...
... Pelagic communities are useful in detecting changes at large scale, but their high spatial heterogeneity and the water masses mobility invalidate them when detecting local effects. Besides, the high changing rates in plankton communities makes its response to be nearly simultaneous with environmenta ...
Principles and Concepts of Pest Management, In
... application and there should be sufficient justification. Surveillance can provide the necessary information to determine the feasibility of a pest control programme. It should be a tool that assists pest management specialists in determining the actual factors that are involved in a pest build up, ...
... application and there should be sufficient justification. Surveillance can provide the necessary information to determine the feasibility of a pest control programme. It should be a tool that assists pest management specialists in determining the actual factors that are involved in a pest build up, ...
Comparative studies of terrestrial vertebrates in urban areas
... European cities since 1984. An important part of the comparison was to understand bird species composition in the context of regional features: vegetation zone, presence of sea coast, and presence of big rivers, that might be influenced by urbanisation (Luniak, 1990). Cringan (1987) compared Christm ...
... European cities since 1984. An important part of the comparison was to understand bird species composition in the context of regional features: vegetation zone, presence of sea coast, and presence of big rivers, that might be influenced by urbanisation (Luniak, 1990). Cringan (1987) compared Christm ...
Managing arid zone natural resources in Australia for spatial and
... Lastly, some emergent relationships among organisms arise as a result of the sum of all the above (particularly the scale issues). In particular, some organisms create niches for others, incidentally or mutualistically, and it seems that this occurs with respect to protection from resource limitatio ...
... Lastly, some emergent relationships among organisms arise as a result of the sum of all the above (particularly the scale issues). In particular, some organisms create niches for others, incidentally or mutualistically, and it seems that this occurs with respect to protection from resource limitatio ...
Metazoans in Extreme Environments: Adaptations of Hydrothermal
... some authors to conclude that alvinellids regularly experience such high temperatures, and that alvinellid tubes may open to vent fluid at the back, allowing warm vent water to flow outward over the animals (Cary et al., 1998). Measurements of temperature effects on alvinellid proteins, however, ind ...
... some authors to conclude that alvinellids regularly experience such high temperatures, and that alvinellid tubes may open to vent fluid at the back, allowing warm vent water to flow outward over the animals (Cary et al., 1998). Measurements of temperature effects on alvinellid proteins, however, ind ...
Hypotheses on the role of the protistan rare biosphere in a changing
... by withstanding starvation conditions via resting stages or reduced metabolic activity (Fenchel & Finlay 1983, Caron et al. 1990). Given that environmental conditions in most natural ecosystems change often, rare taxa might also be maintained by experiencing bursts of population growth during short ...
... by withstanding starvation conditions via resting stages or reduced metabolic activity (Fenchel & Finlay 1983, Caron et al. 1990). Given that environmental conditions in most natural ecosystems change often, rare taxa might also be maintained by experiencing bursts of population growth during short ...
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.