Lesser Prairie-Chicken Conservation Initiative Lesser Prairie
... There are few sights in the world of wildlife more spectacular than the spring mating displays of the diminutive lesser prairie-chicken (Tympanuchus pallidicinctus). Probably as a result of its captivating displays, this bird has become an iconic representative for wildlife species that depend on th ...
... There are few sights in the world of wildlife more spectacular than the spring mating displays of the diminutive lesser prairie-chicken (Tympanuchus pallidicinctus). Probably as a result of its captivating displays, this bird has become an iconic representative for wildlife species that depend on th ...
Keystone Interactions: Salmon and Bear in Riparian Forests of Alaska
... survival of other native species or populations. Most of the keystone descriptions phenomenon focus on a single species, although it is understood cases keystone that in many effects arise through the interactions of two or more species. For exam the "key ple, studies of mutualism (for example, sens ...
... survival of other native species or populations. Most of the keystone descriptions phenomenon focus on a single species, although it is understood cases keystone that in many effects arise through the interactions of two or more species. For exam the "key ple, studies of mutualism (for example, sens ...
CRB_Monit_Frwk_2Nov09-both
... The salmonid monitoring sub-framework outlined here includes (1) anadromous fish population status and trend criteria, specifically Viable Salmonid Population (VSP) metrics (2) artificial production effectiveness, and (3) habitat effectiveness monitoring. These three are components of a broader moni ...
... The salmonid monitoring sub-framework outlined here includes (1) anadromous fish population status and trend criteria, specifically Viable Salmonid Population (VSP) metrics (2) artificial production effectiveness, and (3) habitat effectiveness monitoring. These three are components of a broader moni ...
Passerine Relationships with Habitat Heterogeneity and Grazing at Multiple Scales
... Limited information exists on the relationships among grazing, scale, and patterns of heterogeneity in grassland communities and few studies have explored how grazing and habitat heterogeneity together influence grassland bird communities. I used mixed models to analyze the influence of cattle grazi ...
... Limited information exists on the relationships among grazing, scale, and patterns of heterogeneity in grassland communities and few studies have explored how grazing and habitat heterogeneity together influence grassland bird communities. I used mixed models to analyze the influence of cattle grazi ...
Invasive alien species in Switzerland. Factsheets
... where they escaped during the 20th century. They built up an extensive population of about 7,000 individuals in the UK. Large populations are also found in the Netherlands and Germany. The Swiss first brood was found in 1958 near Basel. The species escaped from waterfowl collections and may also be ...
... where they escaped during the 20th century. They built up an extensive population of about 7,000 individuals in the UK. Large populations are also found in the Netherlands and Germany. The Swiss first brood was found in 1958 near Basel. The species escaped from waterfowl collections and may also be ...
SILICA ACCUMULATION IN GRASSES IN REPONSE TO A LARGE
... leaves of each sample were cut and weighted. We selected green leaves, excluding leaves with a dead tip longer than 5mm. When the sample size was less than 0,2 grams, we pooled material of different samples, always with samples of the same grid, same treatment and same species, (see Table 3) until w ...
... leaves of each sample were cut and weighted. We selected green leaves, excluding leaves with a dead tip longer than 5mm. When the sample size was less than 0,2 grams, we pooled material of different samples, always with samples of the same grid, same treatment and same species, (see Table 3) until w ...
Open full article - European Journal of Entomology
... facultative for the ants. All ten formicid species observed at B. punctata aggregations are known to collect honeydew (Seifert, 1996), yet are not specialized exploiters of this resource (Fritz, 1982). The absence of ants on spikes hosting B. punctata nymphs at five sites indicates that the relation ...
... facultative for the ants. All ten formicid species observed at B. punctata aggregations are known to collect honeydew (Seifert, 1996), yet are not specialized exploiters of this resource (Fritz, 1982). The absence of ants on spikes hosting B. punctata nymphs at five sites indicates that the relation ...
Persistence of invading gypsy moth populations in the United States
... stochasticity results in variable reproductive and mortality rates, causing population growth rates to vary. Laboratory experiments in which environmental variation was manipulated resulted in an increase in colony extinction and decrease of new colony establishment with increasing levels of stochas ...
... stochasticity results in variable reproductive and mortality rates, causing population growth rates to vary. Laboratory experiments in which environmental variation was manipulated resulted in an increase in colony extinction and decrease of new colony establishment with increasing levels of stochas ...
14. Diversity of Life in the Coastal Bays
... population consisted of 28 horses. In subsequent years the herd grew by more than 10% annually and by the late 1970s, park managers began to observe increasing evidence of resource damage caused by the horses. Recognizing the need for population control, the park initiated research in 1985 to develo ...
... population consisted of 28 horses. In subsequent years the herd grew by more than 10% annually and by the late 1970s, park managers began to observe increasing evidence of resource damage caused by the horses. Recognizing the need for population control, the park initiated research in 1985 to develo ...
2008snail
... humidity, rainfall, canopy, and understory species cover. It may also be important to note the presence or absence of other native snail species (i.e. Auriculella, Philonesia, Amastra, Succinea) that can be used as indicators of a habitat able to support other snail species. The size of the reintrod ...
... humidity, rainfall, canopy, and understory species cover. It may also be important to note the presence or absence of other native snail species (i.e. Auriculella, Philonesia, Amastra, Succinea) that can be used as indicators of a habitat able to support other snail species. The size of the reintrod ...
modeling the role of primary productivity disruption in end
... The trophic network modeled in our analysis is based on the fauna of the Late Permian-age Dicynodon Assemblage Zone of the Karoo Basin of South Africa. The Dicynodon zone is the youngest of six Middle to Late Permian-age terrestrial faunal assemblages found in South Africa, and ends at the Permo-Tri ...
... The trophic network modeled in our analysis is based on the fauna of the Late Permian-age Dicynodon Assemblage Zone of the Karoo Basin of South Africa. The Dicynodon zone is the youngest of six Middle to Late Permian-age terrestrial faunal assemblages found in South Africa, and ends at the Permo-Tri ...
Environmental Science Chapter 8 Revision
... ____ 18. The carrying capacity of an environment for a particular species at a particular time is determined by the a. number of individuals in the species. c. reproductive potential of the species. b. distribution of the population. d. supply of the most limited resources. ____ 19. Which of the fol ...
... ____ 18. The carrying capacity of an environment for a particular species at a particular time is determined by the a. number of individuals in the species. c. reproductive potential of the species. b. distribution of the population. d. supply of the most limited resources. ____ 19. Which of the fol ...
Characterizing Nekton use of the Largest Unfished Oyster Reef in
... Harte Research Institute for Gulf of Mexico Studies, Texas A&M University-Corpus Christi, Corpus Christi, TX 78412 ABSTRACT Characterizing density patterns of fish and crustaceans across estuarine habitat types can provide useful information regarding their relative value. The oyster reef complex wit ...
... Harte Research Institute for Gulf of Mexico Studies, Texas A&M University-Corpus Christi, Corpus Christi, TX 78412 ABSTRACT Characterizing density patterns of fish and crustaceans across estuarine habitat types can provide useful information regarding their relative value. The oyster reef complex wit ...
Mammals of the Mixedwood Plains Ecozone
... Order Lagomorpha: Family Leporidae - rabbits and hares These lagomorphs are more widely recognized than most small to medium-sized mammals because they are larger in size and often active during the day. They are very important ecologically as abundant consumers of ground vegetation. Lagomorphs are ...
... Order Lagomorpha: Family Leporidae - rabbits and hares These lagomorphs are more widely recognized than most small to medium-sized mammals because they are larger in size and often active during the day. They are very important ecologically as abundant consumers of ground vegetation. Lagomorphs are ...
Global amphibian declines: sorting the hypotheses - Collins Lab
... the present, but the severity of the declines was not apparent until the 1980s and 1990s. The R. muscosa case illustrates two key points. First, frog populations did not begin declining in the 1980s and 1990s when global amphibian declines were reported. Rather, declines were evident throughout the ...
... the present, but the severity of the declines was not apparent until the 1980s and 1990s. The R. muscosa case illustrates two key points. First, frog populations did not begin declining in the 1980s and 1990s when global amphibian declines were reported. Rather, declines were evident throughout the ...
Axis porcinus, Hog Deer
... Pilhibit Forest Division, particularly the Lagga Bagga forest block (now within a Tiger reserve; B. Long pers. comm. 2008); that Kishanpur Wildife Sanctuary (203 km2), with one of the few remnants of Terai habitat in India, supported considerable numbers, and that Katarniaghat Wildife Division also ...
... Pilhibit Forest Division, particularly the Lagga Bagga forest block (now within a Tiger reserve; B. Long pers. comm. 2008); that Kishanpur Wildife Sanctuary (203 km2), with one of the few remnants of Terai habitat in India, supported considerable numbers, and that Katarniaghat Wildife Division also ...
113 - UConn
... Figure 1) are relevant to the latitudinal gradient in diversity, including scaleinvariant, rank-invariant, and scale-dependent patterns. If the forms (e.g., power versus semilogarithmic function) of the species area curves differ at different latitudes, then scale dependence in the latitudinal gradi ...
... Figure 1) are relevant to the latitudinal gradient in diversity, including scaleinvariant, rank-invariant, and scale-dependent patterns. If the forms (e.g., power versus semilogarithmic function) of the species area curves differ at different latitudes, then scale dependence in the latitudinal gradi ...
Habitat and dietary specificity in aphidophagous ladybirds
... habitat is described as we perceive it ourselves, based on host plant or some other important feature, for example the presence of ants for myrmecophiles (e.g. Majerus 1994), and this approach is used here. Even more than dietary breadth, it is not possible to provide a quantifiable measure of habit ...
... habitat is described as we perceive it ourselves, based on host plant or some other important feature, for example the presence of ants for myrmecophiles (e.g. Majerus 1994), and this approach is used here. Even more than dietary breadth, it is not possible to provide a quantifiable measure of habit ...
reports - UNM Biology Department
... (details in Clay and Holah [1999]). Bi-yearly harvests were conducted in spring (June) and fall (October) because plant composition differed seasonally. Using presence–absence data for all species pooled across the 20 subsamples, we calculated species turnover between two censuses as (immigrant numb ...
... (details in Clay and Holah [1999]). Bi-yearly harvests were conducted in spring (June) and fall (October) because plant composition differed seasonally. Using presence–absence data for all species pooled across the 20 subsamples, we calculated species turnover between two censuses as (immigrant numb ...
Introduction - A New Development @ Chavoux.com
... tends to become equal for whatever reason. If a grazing system is considered (Figure 2), this can be on any point along a continuum until the vegetation quality or quantity of the environment in which the population lives becomes the limiting factor at the ecological carrying capacity. Depending on ...
... tends to become equal for whatever reason. If a grazing system is considered (Figure 2), this can be on any point along a continuum until the vegetation quality or quantity of the environment in which the population lives becomes the limiting factor at the ecological carrying capacity. Depending on ...
Leopard (Panthera pardus) status, distribution, and the research
... attributable to habitat productivity (Macdonald & Loveridge, 2010). Such a broad spread makes reliably estimating population numbers from known geographic ranges particularly difficult. Robust estimates of distribution, population size, and threat require greater levels of research. Although they a ...
... attributable to habitat productivity (Macdonald & Loveridge, 2010). Such a broad spread makes reliably estimating population numbers from known geographic ranges particularly difficult. Robust estimates of distribution, population size, and threat require greater levels of research. Although they a ...
Insect Signature Indicating Corpse Movement from Urban to Rural
... introduced a system which identifies six stages of decomposition, a system that is still used by most forensic entomologists. Also, Payne recorded over five hundred species, demonstrating the wide variety of organisms involved directly or indirectly in the decomposition process (Payne 1965). Forensi ...
... introduced a system which identifies six stages of decomposition, a system that is still used by most forensic entomologists. Also, Payne recorded over five hundred species, demonstrating the wide variety of organisms involved directly or indirectly in the decomposition process (Payne 1965). Forensi ...
Slide 1
... It appears that buckthorn are more readily recruited into shadier areas of the forest. However, canopy cover was also found to be significantly directly related to silver maple density and significantly inversely related to boxelder density, so the purported relationship between buckthorn recruitmen ...
... It appears that buckthorn are more readily recruited into shadier areas of the forest. However, canopy cover was also found to be significantly directly related to silver maple density and significantly inversely related to boxelder density, so the purported relationship between buckthorn recruitmen ...
Feeding selectivity of the herbivorous fish Scartichthys viridis: effects
... this fish from rocky surfaces resulted in increased abundance of green foliose macroalgae (U. rigida and Enteromorpha linza),and, to a much lesser extent, of the red foliose macroalgae G. chilense, Porphyra colwnbina, and Mazzaella laminarioides, and of the brown macroalgae Colpomenia phaeodactyla a ...
... this fish from rocky surfaces resulted in increased abundance of green foliose macroalgae (U. rigida and Enteromorpha linza),and, to a much lesser extent, of the red foliose macroalgae G. chilense, Porphyra colwnbina, and Mazzaella laminarioides, and of the brown macroalgae Colpomenia phaeodactyla a ...
Leopard (Panthera pardus) status, distribution, and the
... attributable to habitat productivity (Macdonald & Loveridge, 2010). Such a broad spread makes reliably estimating population numbers from known geographic ranges particularly difficult. Robust estimates of distribution, population size, and threat require greater levels of research. Although they a ...
... attributable to habitat productivity (Macdonald & Loveridge, 2010). Such a broad spread makes reliably estimating population numbers from known geographic ranges particularly difficult. Robust estimates of distribution, population size, and threat require greater levels of research. Although they a ...