Wallabies in South West Vic Mar 2006 RB
... young animal died, apparently the result of eating poisoned carrots intended for rabbits. This was the first record in our region and we recorded it in The Victorian Naturalist in 1981. The species may have been present for some years but there had been no sightings by members of our club since its ...
... young animal died, apparently the result of eating poisoned carrots intended for rabbits. This was the first record in our region and we recorded it in The Victorian Naturalist in 1981. The species may have been present for some years but there had been no sightings by members of our club since its ...
Department of Biology: Indiana University Bloomington
... reasoning clearly and succinctly. You were just hired as a wildlife biologist for the United States government to work in the upper Midwest. It has recently been brought to your attention that central Wisconsin deer populations are growing at an incredibly rapid rate in contrast to what has been the ...
... reasoning clearly and succinctly. You were just hired as a wildlife biologist for the United States government to work in the upper Midwest. It has recently been brought to your attention that central Wisconsin deer populations are growing at an incredibly rapid rate in contrast to what has been the ...
Differences in leaf δ13C among four dominant species in a
... such as those of the Loess Plateau ecosystem, species with highest WUE (e.g. C4 pathway) have greater potential to be a dominant species in the final succession stage. On the other hand, δ13C values used as a proxy for WUE for C3 plants have been fully confirmed (Farquhar et al. 1982, Farquhar and R ...
... such as those of the Loess Plateau ecosystem, species with highest WUE (e.g. C4 pathway) have greater potential to be a dominant species in the final succession stage. On the other hand, δ13C values used as a proxy for WUE for C3 plants have been fully confirmed (Farquhar et al. 1982, Farquhar and R ...
Problems in the Measurement of Evenness in Ecology Rauno V
... species. Evenness measures should measure the equality of The use of diversity indices, which combine species richness and evenness of abundance distribution into a abundances in the community: maximum evenness single value, has often been criticized owing to the am- (1.0) arising when all species a ...
... species. Evenness measures should measure the equality of The use of diversity indices, which combine species richness and evenness of abundance distribution into a abundances in the community: maximum evenness single value, has often been criticized owing to the am- (1.0) arising when all species a ...
Ecological approaches to human nutrition
... “three sisters.” The combination of corn (a grass), beans (a nitrogen-fixing legume), and squash (a low-lying creeper) maximizes trait differences for growth and resource use efficiency between species [23], resulting in higher yields than those obtained from three monocultures of these crops. The c ...
... “three sisters.” The combination of corn (a grass), beans (a nitrogen-fixing legume), and squash (a low-lying creeper) maximizes trait differences for growth and resource use efficiency between species [23], resulting in higher yields than those obtained from three monocultures of these crops. The c ...
CHAPTER 4. Ecology: Distribution and Abundance What is known of
... large numbers in mid-winter samplings (Suzuki, 1961b; Suzuki and Hatakeyama, 1961). Some English lakes have also been examined ecologically for the occurrence and abundance of watermolds in bottom sediments. Not one member of the Saprolegniaceae was isolated by V. G. Collins and Willoughby (1962) fr ...
... large numbers in mid-winter samplings (Suzuki, 1961b; Suzuki and Hatakeyama, 1961). Some English lakes have also been examined ecologically for the occurrence and abundance of watermolds in bottom sediments. Not one member of the Saprolegniaceae was isolated by V. G. Collins and Willoughby (1962) fr ...
Ecological approaches to human nutrition
... “three sisters.” The combination of corn (a grass), beans (a nitrogen-fixing legume), and squash (a low-lying creeper) maximizes trait differences for growth and resource use efficiency between species [23], resulting in higher yields than those obtained from three monocultures of these crops. The c ...
... “three sisters.” The combination of corn (a grass), beans (a nitrogen-fixing legume), and squash (a low-lying creeper) maximizes trait differences for growth and resource use efficiency between species [23], resulting in higher yields than those obtained from three monocultures of these crops. The c ...
ClsI eEl eEl - Competitive Enterprise Institute
... For several years now, the World Wildlife Fund and other wildlife interest groups have been saying such things as, "Without firing a shot, we may kill one-fifth of all species of life on this planet within the next ...
... For several years now, the World Wildlife Fund and other wildlife interest groups have been saying such things as, "Without firing a shot, we may kill one-fifth of all species of life on this planet within the next ...
The origin of troglobites
... The stage is now set for the shift to troglobitism. All that is required is for the potential troglobitcs to be forced into troglobite niches by competition from an invading fauna. The invaders may be introduced to the area by man, or may arrive as part of a wave of colonization which results from a ...
... The stage is now set for the shift to troglobitism. All that is required is for the potential troglobitcs to be forced into troglobite niches by competition from an invading fauna. The invaders may be introduced to the area by man, or may arrive as part of a wave of colonization which results from a ...
Section VII
... and Ochlerotatus japonicus. All four of these species prefer, and almost exclusively use, artificial containers (old tires, rain gutters, birdbaths, etc.) as larval habitats. In the case of C. pipiens, the most notorious of the vector mosquitoes, the dirtier the water, the better they like it. The i ...
... and Ochlerotatus japonicus. All four of these species prefer, and almost exclusively use, artificial containers (old tires, rain gutters, birdbaths, etc.) as larval habitats. In the case of C. pipiens, the most notorious of the vector mosquitoes, the dirtier the water, the better they like it. The i ...
Competition
... • The fundamental niches of both Gallium species include a wider variety of habitats (soil types) than those they actually inhabit in nature • Interspecific competition restricts the realized niche of each species to a narrower range of soil types • Asymmetric competition – each species is able to s ...
... • The fundamental niches of both Gallium species include a wider variety of habitats (soil types) than those they actually inhabit in nature • Interspecific competition restricts the realized niche of each species to a narrower range of soil types • Asymmetric competition – each species is able to s ...
Insect diversity: facts, fiction and speculation
... compared with others of43.4% to 53.4% for various forest types in Brazil (Adis, Lubin & Montgomery, 1984; Adis & Schubart, 1985; Erwin, 1983a) and 42.5% for similar forest in Seram (see below and Stork & Brendell, unpublished observations). In temperate samples from Britain and S. Africa ants usuall ...
... compared with others of43.4% to 53.4% for various forest types in Brazil (Adis, Lubin & Montgomery, 1984; Adis & Schubart, 1985; Erwin, 1983a) and 42.5% for similar forest in Seram (see below and Stork & Brendell, unpublished observations). In temperate samples from Britain and S. Africa ants usuall ...
Background: Why Is Taxonomy Important?
... In the late 1700s, a scientist named Carl Linnaeus invented a system of naming species known as binomial nomenclature, an important part of taxonomy. This system uses Latin names to identify the genus and species of an organism. In this system, both the genus and the species names are italicized. Th ...
... In the late 1700s, a scientist named Carl Linnaeus invented a system of naming species known as binomial nomenclature, an important part of taxonomy. This system uses Latin names to identify the genus and species of an organism. In this system, both the genus and the species names are italicized. Th ...
ECOLOGY:How Do Communities Come Together
... one such paper was Jared Diamond's "The assembly of species communities" (1), which summarized over a decade of field research on the avian communities of New Guinea and its satellite islands in the Bismarck Archipelago. Diamond distilled his results into simple "assembly rules" that described broad ...
... one such paper was Jared Diamond's "The assembly of species communities" (1), which summarized over a decade of field research on the avian communities of New Guinea and its satellite islands in the Bismarck Archipelago. Diamond distilled his results into simple "assembly rules" that described broad ...
Community Ecology_54
... Limits on Food Chain Length Each food chain in a food web is usually only a few links long ...
... Limits on Food Chain Length Each food chain in a food web is usually only a few links long ...
Mechanisms responsible for the positive diversity–productivity relationship in Minnesota grasslands
... productive species dominate diverse plots, a positive diversity–productivity relationship could still be observed because these species are more likely to be present at high diversity (a positive selection or sampling effect; Aarssen 1997; Huston 1997; Tilman et al. 1997a; Loreau & Hector 2001). ...
... productive species dominate diverse plots, a positive diversity–productivity relationship could still be observed because these species are more likely to be present at high diversity (a positive selection or sampling effect; Aarssen 1997; Huston 1997; Tilman et al. 1997a; Loreau & Hector 2001). ...
Ecological and Evolutionary Limits to Species Geographic Ranges.
... (Gaston 2003, 2009; Holt and Barfield 2011). Understanding range limits requires the integration of theoretical, analytical, and empirical approaches, and this integration is equally relevant to paleontological, contemporary, and future timescales. “Ecology and Evolutionary Limits to Species Geograp ...
... (Gaston 2003, 2009; Holt and Barfield 2011). Understanding range limits requires the integration of theoretical, analytical, and empirical approaches, and this integration is equally relevant to paleontological, contemporary, and future timescales. “Ecology and Evolutionary Limits to Species Geograp ...
Community disassembly by an invasive species Nathan J. Sanders*
... the species present during 5 min of active searching. Although this method may not sample species that forage entirely under the leaf litter or in the canopy, it reliably indicates the presence of the conspicuous ground-foraging species (15). If no ants were found by active searching, we left two 40 ...
... the species present during 5 min of active searching. Although this method may not sample species that forage entirely under the leaf litter or in the canopy, it reliably indicates the presence of the conspicuous ground-foraging species (15). If no ants were found by active searching, we left two 40 ...
Conservation Strategies, Species Action Plans, and
... exploit can lead to the virtual extinction of populations. Apart from physical and chemical habitat alterations created by humans, there are also various biological perturbations. The major perturbation is the introduction of alien (nonnative) species. If these species become established, they can a ...
... exploit can lead to the virtual extinction of populations. Apart from physical and chemical habitat alterations created by humans, there are also various biological perturbations. The major perturbation is the introduction of alien (nonnative) species. If these species become established, they can a ...
Nature Trail Guide - Marianist Environmental Education Center
... between you and I-675. This is a reconstructed tallgrass prairie, planted in 1986 after Interstate 675 was built along the edge of the MSJ property. This part of Ohio is rich in sand and gravel, a legacy left from the glaciers which plowed the materials into our area like a bulldozer, leaving the la ...
... between you and I-675. This is a reconstructed tallgrass prairie, planted in 1986 after Interstate 675 was built along the edge of the MSJ property. This part of Ohio is rich in sand and gravel, a legacy left from the glaciers which plowed the materials into our area like a bulldozer, leaving the la ...
Availability of large seed-dispersers for restoration of degraded
... activity by mammalian seed dispersers then these results suggest that even within the most degraded areas of forest, where inward movement of tree seeds and regeneration is most needed, these processes are likely to be prevalent. A number of explanations of the observed high diversity and apparent a ...
... activity by mammalian seed dispersers then these results suggest that even within the most degraded areas of forest, where inward movement of tree seeds and regeneration is most needed, these processes are likely to be prevalent. A number of explanations of the observed high diversity and apparent a ...
- Mountain Research Initiative
... 2.2 Guinean Forests of West Africa Biodiversity Hotspot The Guinean Forests of West Africa biodiversity hotspot covers all of the lowland forests of political West Africa, from Guinea and Sierra Leone eastward to the Sanaga River in Cameroon. This includes forests in Liberia, Ivory Coast, Ghana, ...
... 2.2 Guinean Forests of West Africa Biodiversity Hotspot The Guinean Forests of West Africa biodiversity hotspot covers all of the lowland forests of political West Africa, from Guinea and Sierra Leone eastward to the Sanaga River in Cameroon. This includes forests in Liberia, Ivory Coast, Ghana, ...
global amphibian declines: a review of some current hypotheses
... Most amphibian population declines can be traced to anthropogenic causes. Habitat alteration and destruction are the primary causes of declines in developed countries. Disease and UV-B radiation have been proposed as explanations for widespread amphibian declines in the tropics, but these hypo ...
... Most amphibian population declines can be traced to anthropogenic causes. Habitat alteration and destruction are the primary causes of declines in developed countries. Disease and UV-B radiation have been proposed as explanations for widespread amphibian declines in the tropics, but these hypo ...
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.