FOOD WEBS
... relationship between stability and complexity arose because there are many ways that ecological and mathematical stability can be defined, and because the relationship between stability and complexity depends critically on how these definitions are constructed (Pimm 1984b). MacArthur's (1955) approa ...
... relationship between stability and complexity arose because there are many ways that ecological and mathematical stability can be defined, and because the relationship between stability and complexity depends critically on how these definitions are constructed (Pimm 1984b). MacArthur's (1955) approa ...
current status and future challenges
... occurrence of non-native plants is much lower in semi-natural mountain vegetation than along disturbed roadsides, especially at higher elevation and in protected areas (Seipel et al. 2012). Direct evidence from more detailed studies of non-native populations in mountains is scarcer. Although the dis ...
... occurrence of non-native plants is much lower in semi-natural mountain vegetation than along disturbed roadsides, especially at higher elevation and in protected areas (Seipel et al. 2012). Direct evidence from more detailed studies of non-native populations in mountains is scarcer. Although the dis ...
Non volant mammals of Dawesville-Binningup
... comprised five sites in the north of the study area in the Yalgorup National Park along White Hill Road, two in the middle of the study area along Preston Beach Road and a further five in the south of the area on privately owned lands in the Myalup area from the coast inland to the Old Coast Road. S ...
... comprised five sites in the north of the study area in the Yalgorup National Park along White Hill Road, two in the middle of the study area along Preston Beach Road and a further five in the south of the area on privately owned lands in the Myalup area from the coast inland to the Old Coast Road. S ...
ktf0482
... 1. Their wood should be considered as a hard substrate like rocks where organisms specialized to inhabit hard substrates can occupy. 2. The type of environment in which the mangroves grow, establish and develop, Le., littoral estuarine or brackishwater, like any other estuarine or brackishwater biot ...
... 1. Their wood should be considered as a hard substrate like rocks where organisms specialized to inhabit hard substrates can occupy. 2. The type of environment in which the mangroves grow, establish and develop, Le., littoral estuarine or brackishwater, like any other estuarine or brackishwater biot ...
Spatio-temporal water uptake patterns of tree saplings are not
... species was not affected by interspecific interactions in mixtures. Niche overlap between deciduous species was lowest (74%) whereas the two evergreen species had similar water uptake patterns (91%). According to our results, interspecific competition did not alter water uptake patterns of the studi ...
... species was not affected by interspecific interactions in mixtures. Niche overlap between deciduous species was lowest (74%) whereas the two evergreen species had similar water uptake patterns (91%). According to our results, interspecific competition did not alter water uptake patterns of the studi ...
Invasion, disturbance, and competition: modeling the fate of coastal
... habitat (Table 1). The distribution was established such that probabilities remained between 0 and 1. Sets of randomly selected parameters were fixed for individual time series, then new parameter values were randomly selected and the process repeated for each calculation. Ten thousand simulations ...
... habitat (Table 1). The distribution was established such that probabilities remained between 0 and 1. Sets of randomly selected parameters were fixed for individual time series, then new parameter values were randomly selected and the process repeated for each calculation. Ten thousand simulations ...
Chapter 3: Maryland`s Wildlife Resources and Species of Greatest
... Species of Greatest Conservation Need (GCN) This Wildlife Diversity Conservation Plan development process provided DNR the opportunity to identify species of wildlife in greatest need of conservation, as well as the key habitats that support them. Rather than focusing on a certain group or category ...
... Species of Greatest Conservation Need (GCN) This Wildlife Diversity Conservation Plan development process provided DNR the opportunity to identify species of wildlife in greatest need of conservation, as well as the key habitats that support them. Rather than focusing on a certain group or category ...
Does eutrophication-driven evolution change aquatic ecosystems?
... Eutrophication increases primary production and changes the relative abundance, taxonomic composition and spatial distribution of primary producers within an aquatic ecosystem. The changes in composition and location of resources alter the distribution and flow of energy and biomass throughout the f ...
... Eutrophication increases primary production and changes the relative abundance, taxonomic composition and spatial distribution of primary producers within an aquatic ecosystem. The changes in composition and location of resources alter the distribution and flow of energy and biomass throughout the f ...
iucn guidelines for the prevention of biodiversity loss
... * providing appropriate legal and institutional mechanisms; * enhancing knowledge and research efforts. While addressing all four concerns is important, these particular guidelines focus most strongly on aspects of strengthening the management response. This focus reflects the urgent need to spread ...
... * providing appropriate legal and institutional mechanisms; * enhancing knowledge and research efforts. While addressing all four concerns is important, these particular guidelines focus most strongly on aspects of strengthening the management response. This focus reflects the urgent need to spread ...
Grovetown Lagoon kit
... A huge range of plants and animals inhabit wetlands. Wetland plants include 47 species of rush and 72 species of native sedge. Many of these plants have very specific environmental needs and are extremely vulnerable to change. A number of New Zealand’s endangered plant species depend totally on wetl ...
... A huge range of plants and animals inhabit wetlands. Wetland plants include 47 species of rush and 72 species of native sedge. Many of these plants have very specific environmental needs and are extremely vulnerable to change. A number of New Zealand’s endangered plant species depend totally on wetl ...
Structure and Stability of Ecological Networks resource use
... structure derived from analysis of individual-based data with those patterns that result when data are aggregated into species (or size class-based) averages. This comparison shows that analysis based on species averaging can obscure interesting patterns in the size structure of ecological communiti ...
... structure derived from analysis of individual-based data with those patterns that result when data are aggregated into species (or size class-based) averages. This comparison shows that analysis based on species averaging can obscure interesting patterns in the size structure of ecological communiti ...
`wild` plant and animal resources by small-scale pre
... Along with obtaining a much more accurate and complete picture of where and when different species of plants and animals were domesticated worldwide, research has also substantially expanded our understanding of many of the basic underlying rules that define and shape the various developmental conte ...
... Along with obtaining a much more accurate and complete picture of where and when different species of plants and animals were domesticated worldwide, research has also substantially expanded our understanding of many of the basic underlying rules that define and shape the various developmental conte ...
- ePrints Soton
... different selective regime. We can see that two different stable attractors have been reached. Although not shown, in the case B = 100, the same “ecosystem” also falls into two different stable attractors under selection and random selection, both of which have a different species composition to eit ...
... different selective regime. We can see that two different stable attractors have been reached. Although not shown, in the case B = 100, the same “ecosystem” also falls into two different stable attractors under selection and random selection, both of which have a different species composition to eit ...
Keystone species - Department of Conservation
... result in compensatory action by the others as they expand in abundance or niche breadth. However, if all but one of the species in the group are eliminated (e.g. by human influence), the remaining species may come to play a keystone role it did not previously have. The avian fauna of New Zealand, ...
... result in compensatory action by the others as they expand in abundance or niche breadth. However, if all but one of the species in the group are eliminated (e.g. by human influence), the remaining species may come to play a keystone role it did not previously have. The avian fauna of New Zealand, ...
Problems with areal definitions of endemism: the effects of spatial
... cabanisi, known from a handful of sites along the Mexico-Guatemala border in an extremely restricted distribution, is not endemic to either country under a regional definition, but would be included in areally defined endemic lists (Bibby et al., 1992). Using area as the criterion for endemism, howe ...
... cabanisi, known from a handful of sites along the Mexico-Guatemala border in an extremely restricted distribution, is not endemic to either country under a regional definition, but would be included in areally defined endemic lists (Bibby et al., 1992). Using area as the criterion for endemism, howe ...
IUCN Guidelines for the Prevention of
... comprehensive legal and institutional frameworks. The risk of unintentional introductions should be minimised. Intentional introductions should only take place with authorisation from the relevant agency or authority. Authorisation should require comprehensive evaluations based on biodiversity consi ...
... comprehensive legal and institutional frameworks. The risk of unintentional introductions should be minimised. Intentional introductions should only take place with authorisation from the relevant agency or authority. Authorisation should require comprehensive evaluations based on biodiversity consi ...
IOSR Journal Of Environmental Science, Toxicology And Food Technology (IOSR-JESTFT)
... the ‘super-abundance’ of this group over any terrestrial animals globally as well as their ability to access virtually all types of habitats [9]. The low number of insect visit on Jasmine showed similarity to the result of a study [10] where only lepidopteran larvae was observed to attack Jasmine fr ...
... the ‘super-abundance’ of this group over any terrestrial animals globally as well as their ability to access virtually all types of habitats [9]. The low number of insect visit on Jasmine showed similarity to the result of a study [10] where only lepidopteran larvae was observed to attack Jasmine fr ...
0041332
... no positive side effects – such as those that have colonised marine areas after being transported in ballast water. 1.2.3 In addition, there are some species that are native to parts of Britain that can become invasive and threaten the environment of a specific area when they are released to an are ...
... no positive side effects – such as those that have colonised marine areas after being transported in ballast water. 1.2.3 In addition, there are some species that are native to parts of Britain that can become invasive and threaten the environment of a specific area when they are released to an are ...
Impacts of biodiversity on the emergence and transmission of
... fish indicates that since 1970 global population sizes have declined by almost 30% (ref. 5). Global and local extinction rates of some taxa, particularly microbes, have not been well characterized. For the many organisms that are symbionts of other organisms, extinction of their hosts can cause thei ...
... fish indicates that since 1970 global population sizes have declined by almost 30% (ref. 5). Global and local extinction rates of some taxa, particularly microbes, have not been well characterized. For the many organisms that are symbionts of other organisms, extinction of their hosts can cause thei ...
plant invasiveness assessment system for alaska
... the population size of one or more native species in the community) Causes major alteration in community composition (e.g., results in the extirpation of one or several native species, reducing biodiversity or change the community composition towards species exotic to the natural community) Unknown ...
... the population size of one or more native species in the community) Causes major alteration in community composition (e.g., results in the extirpation of one or several native species, reducing biodiversity or change the community composition towards species exotic to the natural community) Unknown ...
PDF - Smithsonian Tropical Research Institute
... 1985; Schowalter and Ganio 1998; Le Corff and Marquis 1999). In tropical rainforests, many abiotic and biotic characteristics of the upper canopy (the uppermost leaf layer) are different from those of lower forest layers. Illumination, air temperature, wind, fluctuation of relative humidity and wate ...
... 1985; Schowalter and Ganio 1998; Le Corff and Marquis 1999). In tropical rainforests, many abiotic and biotic characteristics of the upper canopy (the uppermost leaf layer) are different from those of lower forest layers. Illumination, air temperature, wind, fluctuation of relative humidity and wate ...
Agriculture, Ecosystems and Environment The
... Catterall, 2010) – invasion resistance would then be a dis-service, as it prevents the achievement of that intended goal. In other words, a single function can be a service or dis-service at the same time. We suggest that consideration should be given to explicit statement of end goals and the impos ...
... Catterall, 2010) – invasion resistance would then be a dis-service, as it prevents the achievement of that intended goal. In other words, a single function can be a service or dis-service at the same time. We suggest that consideration should be given to explicit statement of end goals and the impos ...
Biodiversity, Habitat Area, Resource Growth Rate and Interference
... or loss term for the consumer. Even if the effect is a gradual one, such as when premature death results from wounding or the devotion of substantial energetic resources to aggressive behaviors, it may be appropriate to include a mortality or loss term to capture the wastage effect. The effects of s ...
... or loss term for the consumer. Even if the effect is a gradual one, such as when premature death results from wounding or the devotion of substantial energetic resources to aggressive behaviors, it may be appropriate to include a mortality or loss term to capture the wastage effect. The effects of s ...
Bifrenaria
Bifrenaria, abbreviated Bif. in horticultural trade, is a genus of plant in family Orchidaceae. It contains 20 species found in Panama, Trinidad and South America. There are no known uses for them, but their abundant, and at first glance artificial, flowers, make them favorites of orchid growers.The genus can be split in two clearly distinct groups: one of highly robust plants with large flowers, that encompass the first species to be classified under the genus Bifrenaria; other of more delicate plants with smaller flowers occasionally classified as Stenocoryne or Adipe. There are two additional species that are normally classified as Bifrenaria, but which molecular analysis indicate to belong to different orchid groups entirely. One is Bifrenaria grandis which is endemic to Bolívia and which is now placed in Lacaena, and Bifrenaria steyermarkii, an inhabitant of the northern Amazon Forest, which does not have an alternative classification.