Conservation Outside Protected Areas
... threaten the survival of endangered species. In the United States, the Bureau of Land Management oversees more than 110 million ha of multiple-use land, including 83% of the state of Nevada and large areas of Utah, Wyoming, Oregon, Idaho, and other western states. In the past, these lands were prima ...
... threaten the survival of endangered species. In the United States, the Bureau of Land Management oversees more than 110 million ha of multiple-use land, including 83% of the state of Nevada and large areas of Utah, Wyoming, Oregon, Idaho, and other western states. In the past, these lands were prima ...
BSF 101//3 - Biodiversity in the Tropics
... Describe the ways in which amphibians are adapted to life on land . In what ways are amphibians still restricted to a watery or moist environment? (10 marks) ...
... Describe the ways in which amphibians are adapted to life on land . In what ways are amphibians still restricted to a watery or moist environment? (10 marks) ...
Preserve Songbird Species at Risk
... birds with a light eye ring and two white wing bars. They make their homes under tall, closed tree canopies in the dark interiors of mature woodlands, often along steep-sided ravines. These small birds have an explosive song that sounds like “peet-sah,” which may be heard from shady spots along cree ...
... birds with a light eye ring and two white wing bars. They make their homes under tall, closed tree canopies in the dark interiors of mature woodlands, often along steep-sided ravines. These small birds have an explosive song that sounds like “peet-sah,” which may be heard from shady spots along cree ...
Stem and leaf hydraulics of congeneric tree species from adjacent
... 15°560 S, 47°530 W, altitude 1,100 m) located 35 km south of Brasilia, Brazil. The site is a seasonal savanna (locally known as Cerrado) with an open to semi-closed canopy composed of evergreen and brevi-deciduous trees and herbaceous understory. Mean annual precipitation is approximately 1,500 mm w ...
... 15°560 S, 47°530 W, altitude 1,100 m) located 35 km south of Brasilia, Brazil. The site is a seasonal savanna (locally known as Cerrado) with an open to semi-closed canopy composed of evergreen and brevi-deciduous trees and herbaceous understory. Mean annual precipitation is approximately 1,500 mm w ...
Floral Evolution - Harvard University Center for the Environment
... The group Rafflesiaceae (red, also pictured bottom right) is embedded within Euphorbiaceae, the tiny-flowered spurges (blue, also pictured bottom left) [12]. Floral diameter size increase along the 46 million year (My) stem lineage of Rafflesiaceae resulted from very high rates of floral evolution. ...
... The group Rafflesiaceae (red, also pictured bottom right) is embedded within Euphorbiaceae, the tiny-flowered spurges (blue, also pictured bottom left) [12]. Floral diameter size increase along the 46 million year (My) stem lineage of Rafflesiaceae resulted from very high rates of floral evolution. ...
Seed Dispersal and Spatial Pattern in Tropical Trees
... of conspecific trees at scales ranging from a few meters to a few hundred meters [4–6]. The cause of conspecific clustering remains unclear [7], and it has been variously attributed to patchy habitat variation [5,8], to the limited dispersal of seeds [9], or to neutral processes that disregard species ...
... of conspecific trees at scales ranging from a few meters to a few hundred meters [4–6]. The cause of conspecific clustering remains unclear [7], and it has been variously attributed to patchy habitat variation [5,8], to the limited dispersal of seeds [9], or to neutral processes that disregard species ...
Saving the World`s Terrestrial Megafauna - Research
... 8. S trive for increased awareness among the global public of the current megafauna crisis using traditional media as well as social media and other networking approaches. 9. S eek a new and comprehensive global commitment and framework for conserving megafauna. The international community shoul ...
... 8. S trive for increased awareness among the global public of the current megafauna crisis using traditional media as well as social media and other networking approaches. 9. S eek a new and comprehensive global commitment and framework for conserving megafauna. The international community shoul ...
CONVENTION ON WETLANDS (Ramsar, Iran, 1971)
... 4, as the basis of ensuring that their management planning for the site fully recognizes this importance. This guidance should not be applied to the detriment of smaller, high conservation status populations. A17. Note that this guidance applies just during the period of population mixing (often, bu ...
... 4, as the basis of ensuring that their management planning for the site fully recognizes this importance. This guidance should not be applied to the detriment of smaller, high conservation status populations. A17. Note that this guidance applies just during the period of population mixing (often, bu ...
The ecology of infectious disease: Effects of host diversity and
... underneath caged animals and maintained at 22°C and high humidity until all specimens molted or died. Molted nymphs were examined for the presence of B. burgdorferi by using direct immunofluorescence antibody microscopy (DFA) (ref. 22, see ref. 23 for detailed description of methods). We are aware o ...
... underneath caged animals and maintained at 22°C and high humidity until all specimens molted or died. Molted nymphs were examined for the presence of B. burgdorferi by using direct immunofluorescence antibody microscopy (DFA) (ref. 22, see ref. 23 for detailed description of methods). We are aware o ...
Habitat Loss and Fragmentation - Arkansas Forest Resources Center
... The creation of edge following fragmentation causes a number of biological changes (Harper, 2005). These changes are often similar or coupled to the biological changes that result from the creation of the fragment itself. These include changes in species composition, abundance, and distribution, as ...
... The creation of edge following fragmentation causes a number of biological changes (Harper, 2005). These changes are often similar or coupled to the biological changes that result from the creation of the fragment itself. These include changes in species composition, abundance, and distribution, as ...
Succession - WordPress.com
... natural disasters or human actions. (Start from soil & left over organisms) Characteristics of primary succession: 1. The first species to colonize an area in primary succession are pioneer species. 2. The final community in succession that is a stable, mature community that undergoes little or no c ...
... natural disasters or human actions. (Start from soil & left over organisms) Characteristics of primary succession: 1. The first species to colonize an area in primary succession are pioneer species. 2. The final community in succession that is a stable, mature community that undergoes little or no c ...
Variation in Body Shape across Species and Populations in a
... species. Additionally, we sought to use lakes inhabited by a single Diaptomid copepod species. This was the state of the majority (but not all [27]) of lakes in this region and avoided considerations of competitive interactions among Diaptomid species or bias in species choice. To achieve this, we r ...
... species. Additionally, we sought to use lakes inhabited by a single Diaptomid copepod species. This was the state of the majority (but not all [27]) of lakes in this region and avoided considerations of competitive interactions among Diaptomid species or bias in species choice. To achieve this, we r ...
Resource partitioning as determining factor in structuring fish
... observed that majority of the fish species consumes aquatic invertebrates. Hence, among overall fish species abundance, niche overlap was calculated for species utilizing similar resources viz. invertivores. Niche overlap values were mostly high (0.61-1.0) with >80% of the species falling under this ...
... observed that majority of the fish species consumes aquatic invertebrates. Hence, among overall fish species abundance, niche overlap was calculated for species utilizing similar resources viz. invertivores. Niche overlap values were mostly high (0.61-1.0) with >80% of the species falling under this ...
Historical land use and environmental determinants
... outlier (46.5% cover of nonnative species), a plot with a canopy of the nonnative nitrogen-fixer, Robinia pseudoacacia, was reduced to the next-highest cover of nonnative species (39%) found, because of a significantly high influence on the model outcome (Sokal and Rohlf, 1995). We investigated whet ...
... outlier (46.5% cover of nonnative species), a plot with a canopy of the nonnative nitrogen-fixer, Robinia pseudoacacia, was reduced to the next-highest cover of nonnative species (39%) found, because of a significantly high influence on the model outcome (Sokal and Rohlf, 1995). We investigated whet ...
Species functional redundancy, random extinctions and the stability
... ecosystem processes (but see Walker et al. 1999). Data on such distributions, and thus of how species richness, functional richness and functional evenness are correlated with each other in nature, are thus fragmentary. For example, although one might imagine that, at least up to a given point, comm ...
... ecosystem processes (but see Walker et al. 1999). Data on such distributions, and thus of how species richness, functional richness and functional evenness are correlated with each other in nature, are thus fragmentary. For example, although one might imagine that, at least up to a given point, comm ...
Density-dependence in common tree species in a tropical dry forest
... Mudumalai Wildlife Sanctuary in the state of Tamil Nadu, southern India, near the borders with the Kerala and Karnataka states. The sanctuary (11∞ 32' to 11∞ 43' N, 76∞ 22' to 76∞ 45' E) is situated to the north of the Nilgiri plateau with an altitudinal range of 900 - 1200 m a.s.l. and has an area ...
... Mudumalai Wildlife Sanctuary in the state of Tamil Nadu, southern India, near the borders with the Kerala and Karnataka states. The sanctuary (11∞ 32' to 11∞ 43' N, 76∞ 22' to 76∞ 45' E) is situated to the north of the Nilgiri plateau with an altitudinal range of 900 - 1200 m a.s.l. and has an area ...
Invasive Predatory Small Mammals on Islands Strategy
... Case Study 1, 2 and 3 highlight the impact these species are known to have on island ecosystems. Case Study 1: Impact of American mink on protected bird species in Lough Mask. Lough Mask is designated as a candidate Special Protection Area (SPA 062) for wild birds under EU Directive 79/409. Both Co ...
... Case Study 1, 2 and 3 highlight the impact these species are known to have on island ecosystems. Case Study 1: Impact of American mink on protected bird species in Lough Mask. Lough Mask is designated as a candidate Special Protection Area (SPA 062) for wild birds under EU Directive 79/409. Both Co ...
Here - illawarrareptilesociety.com.au
... So species in such environments have no gaseous lift, but can maintain their position in the water using an oral sucker. These species often live in contact with the bottom where the water current is at its lowest. The Impact of Different Life Stages Transitions between hatchling, larval, and metamo ...
... So species in such environments have no gaseous lift, but can maintain their position in the water using an oral sucker. These species often live in contact with the bottom where the water current is at its lowest. The Impact of Different Life Stages Transitions between hatchling, larval, and metamo ...
The University of Chicago Press The American Society of Naturalists
... abstract: Competition theory predicts that multispecies coexistence requires that species have traits that fall on the same interspecific trade-off surface. Fossil records for mollusks, mammals, trees, and other taxa show that with rare exception, ecologically similar species have coexisted for a mi ...
... abstract: Competition theory predicts that multispecies coexistence requires that species have traits that fall on the same interspecific trade-off surface. Fossil records for mollusks, mammals, trees, and other taxa show that with rare exception, ecologically similar species have coexisted for a mi ...
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whole_diss_fin_draft[2].
... also provide one of the main sources of food for carnivorous birds and mammals (Hutchinson, 2002). The biogeographical regions known to support the greatest lizard species richness are deserts, with those found in tropical regions being of a comparable level (Vitt, 1997). Tropical forests are amongs ...
... also provide one of the main sources of food for carnivorous birds and mammals (Hutchinson, 2002). The biogeographical regions known to support the greatest lizard species richness are deserts, with those found in tropical regions being of a comparable level (Vitt, 1997). Tropical forests are amongs ...
Saving the World`s Terrestrial Megafauna
... 8. S trive for increased awareness among the global public of the current megafauna crisis using traditional media as well as social media and other networking approaches. 9. S eek a new and comprehensive global commitment and framework for conserving megafauna. The international community shoul ...
... 8. S trive for increased awareness among the global public of the current megafauna crisis using traditional media as well as social media and other networking approaches. 9. S eek a new and comprehensive global commitment and framework for conserving megafauna. The international community shoul ...
SPECIES ACCOUNT - The Nature Conservancy
... common and widespread nesting species, an abundant (sometimes mind-bogglingly abundant) migrant, and an often-numerous wintering species on the Vineyard. Robins do nest in natural areas on the Island, and members of migratory populations that visit us in the colder months can be surprisingly wild an ...
... common and widespread nesting species, an abundant (sometimes mind-bogglingly abundant) migrant, and an often-numerous wintering species on the Vineyard. Robins do nest in natural areas on the Island, and members of migratory populations that visit us in the colder months can be surprisingly wild an ...
Patterns of Biodiversity III
... b. Habitat heterogeneity hypothesis: A landscape with more habitats can hold more species; so perhaps the tropics have more habitats than the temperate zone. This is certainly the case, as they both have tundra, grassland, desert, evergreen, and deciduous forest, while the tropics add rain forest, c ...
... b. Habitat heterogeneity hypothesis: A landscape with more habitats can hold more species; so perhaps the tropics have more habitats than the temperate zone. This is certainly the case, as they both have tundra, grassland, desert, evergreen, and deciduous forest, while the tropics add rain forest, c ...
Secondary succession is influenced by belowground insect
... was also found in the third year and was caused by differences in the phenology of dominant plant species (see below). Species richness reached a maximum in summer in the first 2 years but in the third year, it followed a flat line owing to the higher proportion of perennials. In the first year, the ...
... was also found in the third year and was caused by differences in the phenology of dominant plant species (see below). Species richness reached a maximum in summer in the first 2 years but in the third year, it followed a flat line owing to the higher proportion of perennials. In the first year, the ...
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.