Conservation of Landbirds in the African
... conservation concern in both scientific and political arenas as the European breeding populations of some formerly widespread species have more than halved in the last 30 years; Aware that the status of migratory landbirds is widely used as an indicator of the overall health of the environment and o ...
... conservation concern in both scientific and political arenas as the European breeding populations of some formerly widespread species have more than halved in the last 30 years; Aware that the status of migratory landbirds is widely used as an indicator of the overall health of the environment and o ...
Making Room for Wolf Recovery - Center for Biological Diversity
... that there are only roughly 5,400 wolves in portions of the Midwest (~3,700 wolves), northern Rockies (~1,670) and Southwest (~80) (FWS 2013), and the states are actively working to reduce populations. Moreover, wolves occupy just a fraction of their historic range, less than 10 percent, and only a ...
... that there are only roughly 5,400 wolves in portions of the Midwest (~3,700 wolves), northern Rockies (~1,670) and Southwest (~80) (FWS 2013), and the states are actively working to reduce populations. Moreover, wolves occupy just a fraction of their historic range, less than 10 percent, and only a ...
urban decay and mosquito production in west baltimore: roofless
... mosquito on the East Coast (Leisnham 2011). The Asian tiger mosquito, as it is typically called, was first introduced into the United States in the mid-1980s from East Asia and has since rapidly spread eastwards and northwards across the country (Benedict 2007). The mosquito was first discovered in ...
... mosquito on the East Coast (Leisnham 2011). The Asian tiger mosquito, as it is typically called, was first introduced into the United States in the mid-1980s from East Asia and has since rapidly spread eastwards and northwards across the country (Benedict 2007). The mosquito was first discovered in ...
Coexistence under positive frequency dependence Jane Molofsky , James D. Bever
... allowing the coexistence of competitors. While interactions between species and genotypes can also result in positive frequency dependence, positive frequency dependence has usually been credited with hastening the extinction of rare types and is not thought to contribute to coexistence. In the pres ...
... allowing the coexistence of competitors. While interactions between species and genotypes can also result in positive frequency dependence, positive frequency dependence has usually been credited with hastening the extinction of rare types and is not thought to contribute to coexistence. In the pres ...
Adaptive Radiation, Ecological Opportunity, and Evolutionary
... that such ecosystem engineers could alter or amplify the trajectory of an adaptive radiation to which they belong, no examples from nature have been proposed; the closest example to date is Harmon et al.’s (2009) demonstration that adaptive diversification in sticklebacks leads to differences in the ...
... that such ecosystem engineers could alter or amplify the trajectory of an adaptive radiation to which they belong, no examples from nature have been proposed; the closest example to date is Harmon et al.’s (2009) demonstration that adaptive diversification in sticklebacks leads to differences in the ...
species profile - Department of Primary Industries, Parks, Water and
... Siberian tigers (and all other tiger subspecies) are carnivores (Baker 2006) and their preferred prey species is thought to be red deer and wild boar (Tian et al. 2014). However, other prey types such as Sika and Roe deer, Siberian and Maral Wapiti (Elk), Asian black bears, badgers and racoon dogs w ...
... Siberian tigers (and all other tiger subspecies) are carnivores (Baker 2006) and their preferred prey species is thought to be red deer and wild boar (Tian et al. 2014). However, other prey types such as Sika and Roe deer, Siberian and Maral Wapiti (Elk), Asian black bears, badgers and racoon dogs w ...
Approaches to measuring the effects of human disturbance on birds
... generally not known. For example, if the sites with higher levels of disturbance also have lower levels of resource availability (e.g. food or nest-sites) or higher risk of predation, then removing the source of disturbance may have no effect on the numbers of animals in the area. An alternative com ...
... generally not known. For example, if the sites with higher levels of disturbance also have lower levels of resource availability (e.g. food or nest-sites) or higher risk of predation, then removing the source of disturbance may have no effect on the numbers of animals in the area. An alternative com ...
Adaptive Radiation, Ecological Opportunity, and
... that such ecosystem engineers could alter or amplify the trajectory of an adaptive radiation to which they belong, no examples from nature have been proposed; the closest example to date is Harmon et al.’s (2009) demonstration that adaptive diversification in sticklebacks leads to differences in the ...
... that such ecosystem engineers could alter or amplify the trajectory of an adaptive radiation to which they belong, no examples from nature have been proposed; the closest example to date is Harmon et al.’s (2009) demonstration that adaptive diversification in sticklebacks leads to differences in the ...
Baboons, Space, Time, and Energy The
... organization. One is reductionistic: an ex- per group, group responses to predators, amination of immediate behavioral or mo- spatial deployment of group members tivational causes in the individuals that when progressing or foraging, differential make up the social group. In baboons, this use of par ...
... organization. One is reductionistic: an ex- per group, group responses to predators, amination of immediate behavioral or mo- spatial deployment of group members tivational causes in the individuals that when progressing or foraging, differential make up the social group. In baboons, this use of par ...
on the ecological roles of salamanders
... of North America. We offer suggestions for future research by noting basic gaps in knowledge. Nomenclature follows Collins & Taggart (2002). This review is particularly timely because natural areas are becoming increasingly modified by destabilizing factors such as habitat alteration, toxic chemical ...
... of North America. We offer suggestions for future research by noting basic gaps in knowledge. Nomenclature follows Collins & Taggart (2002). This review is particularly timely because natural areas are becoming increasingly modified by destabilizing factors such as habitat alteration, toxic chemical ...
Fulltext PDF - Indian Academy of Sciences
... Most coral reef fishes have a unique pelagic (oceanic) larval stage resulting in a life history with two distinct phases: the pelagic and benthic stages. Larvae eat a wide variety of microzooplankton and their distributions are controlled by physical oceanic processes (circulation patterns and curre ...
... Most coral reef fishes have a unique pelagic (oceanic) larval stage resulting in a life history with two distinct phases: the pelagic and benthic stages. Larvae eat a wide variety of microzooplankton and their distributions are controlled by physical oceanic processes (circulation patterns and curre ...
How fast do migratory songbirds have to adapt to keep pace with
... parameterize an age-structured matrix population model that projects the number of females in the population forward 1 year. This new population and the landscape at time t ? 1 are used to calculate the maternity function bt?1, and this cycle is repeated for the duration of the simulation (200 years ...
... parameterize an age-structured matrix population model that projects the number of females in the population forward 1 year. This new population and the landscape at time t ? 1 are used to calculate the maternity function bt?1, and this cycle is repeated for the duration of the simulation (200 years ...
3-1 Review of general section and summaries of monitoring
... 7. Permanent alteration of hydrographical conditions does not adversely affect marine ecosystems. 8. Concentrations of contaminants are at levels not giving rise to pollution effects. 9. Contaminants in fish and other seafood for human consumption do not exceed levels established by Community legisl ...
... 7. Permanent alteration of hydrographical conditions does not adversely affect marine ecosystems. 8. Concentrations of contaminants are at levels not giving rise to pollution effects. 9. Contaminants in fish and other seafood for human consumption do not exceed levels established by Community legisl ...
July 2010 - Rufford Small Grants
... used based on tree characteristics (Datta, 2002; Datta and Rawat, 2004). Logging is targeted mainly for large-sized trees and therefore it can have significant impacts on the nest tree availability for hornbills. Despite the loss of food and nest trees hornbills continue to use logged forests as is ...
... used based on tree characteristics (Datta, 2002; Datta and Rawat, 2004). Logging is targeted mainly for large-sized trees and therefore it can have significant impacts on the nest tree availability for hornbills. Despite the loss of food and nest trees hornbills continue to use logged forests as is ...
Biotic and abiotic factors constraining the distribution and
... shaded, low salinity sites. Additionally, they must escape predation by crabs, which are abundant throughout all Panamanian mangrove forests. Adult trees are nutrient-limited on the Caribbean coast of Panamá, and the dwarf growth form is caused by nutrient-limitation. The naturally occurring environ ...
... shaded, low salinity sites. Additionally, they must escape predation by crabs, which are abundant throughout all Panamanian mangrove forests. Adult trees are nutrient-limited on the Caribbean coast of Panamá, and the dwarf growth form is caused by nutrient-limitation. The naturally occurring environ ...
Monitoring Changes in Genetic Diversity (PDF Available)
... metrics’ (alpha diversity, spatial beta diversity, temporal beta diversity, and abundance). In principle all of these categories could be relevant to genetic variation. However, this expanded notion of biodiversity—which includes change over time, spatial variation and abundance—is a relatively rece ...
... metrics’ (alpha diversity, spatial beta diversity, temporal beta diversity, and abundance). In principle all of these categories could be relevant to genetic variation. However, this expanded notion of biodiversity—which includes change over time, spatial variation and abundance—is a relatively rece ...
Contents Organising committee - New Zealand Ecological Society
... lunch, snacks, bottled water are provided. Tea and coffee are also available on the island. Wear strong footwear for walking. Bring a raincoat and warm jacket as well as a sunhat. Footwear, clothing and field gear must be scrupulously clean, and free of all dirt, seeds, insects, pocket fluff. You wi ...
... lunch, snacks, bottled water are provided. Tea and coffee are also available on the island. Wear strong footwear for walking. Bring a raincoat and warm jacket as well as a sunhat. Footwear, clothing and field gear must be scrupulously clean, and free of all dirt, seeds, insects, pocket fluff. You wi ...
Piping Plover (Charadrius melodus circumcinctus)
... Recovery planning is intended to benefit species at risk and biodiversity in general. However, it is recognized that strategies may also inadvertently lead to environmental effects beyond the intended benefits. The planning process based on national guidelines directly incorporates consideration of ...
... Recovery planning is intended to benefit species at risk and biodiversity in general. However, it is recognized that strategies may also inadvertently lead to environmental effects beyond the intended benefits. The planning process based on national guidelines directly incorporates consideration of ...
Eds., K. Omori, X. Guo, N. Yoshie, N. Fujii, I.... © by TERRAPUB, 2011.
... The slower increase in observed δ 15N values with increasing trophic level compared to those predicted from model-derived trophic level may be due to several reasons. Firstly, the assumptions made in the comparison between observed and predicted δ15N values could be incorrect. These could be tested ...
... The slower increase in observed δ 15N values with increasing trophic level compared to those predicted from model-derived trophic level may be due to several reasons. Firstly, the assumptions made in the comparison between observed and predicted δ15N values could be incorrect. These could be tested ...
Biodiversity and Ecosystem Services in Agroecosystems
... services measured in the assessment were being degraded or unsustainably used as a consequence of agricultural management and other human activities. Finally, evaluations of ‘planetary boundaries,’ which describe the safe operating space for human activities with respect to the planet's biophysical ...
... services measured in the assessment were being degraded or unsustainably used as a consequence of agricultural management and other human activities. Finally, evaluations of ‘planetary boundaries,’ which describe the safe operating space for human activities with respect to the planet's biophysical ...
Quantifying Terrestrial Habitat Loss and Fragmentation: A Protocol
... Vitousek et al. 1997, Wilson 1999, Myers and Knoll 2001, Balmford et al. 2003). Current global extinction rates for animals and plants are as much as 1,000 times higher than the background rate in the fossil record (Wilson 1999) and vertebrate animal taxa are disappearing at disproportionately high ...
... Vitousek et al. 1997, Wilson 1999, Myers and Knoll 2001, Balmford et al. 2003). Current global extinction rates for animals and plants are as much as 1,000 times higher than the background rate in the fossil record (Wilson 1999) and vertebrate animal taxa are disappearing at disproportionately high ...
A comparison of invasive and non
... at low nutrient availabilities. This is consistent with a strategy where these particular invasive species are able to rapidly use available resources. Relative growth rates were also higher for two out of three invasive species across a water availability gradient, but RGR did not differ in plastic ...
... at low nutrient availabilities. This is consistent with a strategy where these particular invasive species are able to rapidly use available resources. Relative growth rates were also higher for two out of three invasive species across a water availability gradient, but RGR did not differ in plastic ...
- Centre for Biodiversity Theory and Modelling
... 1999, 2001; Micheli et al. 1999; Yachi & Loreau 1999). Furthermore, increasing species diversity can stabilize aggregate measures by increasing the range of species responses to environmental fluctuations (Chesson et al. 2001, Elmqvist et al. 2003, Hughes & Roughgarden 1998, Ives & Carpenter 2007, Iv ...
... 1999, 2001; Micheli et al. 1999; Yachi & Loreau 1999). Furthermore, increasing species diversity can stabilize aggregate measures by increasing the range of species responses to environmental fluctuations (Chesson et al. 2001, Elmqvist et al. 2003, Hughes & Roughgarden 1998, Ives & Carpenter 2007, Iv ...
View Document - bison-m
... shorter timescale (once the threats are imminent) than for species with lower magnitude threats. Because we do not routinely quantify how likely or how soon extinction would be expected to occur absent listing, we must evaluate factors that contribute to the likelihood and time scale for extinction. ...
... shorter timescale (once the threats are imminent) than for species with lower magnitude threats. Because we do not routinely quantify how likely or how soon extinction would be expected to occur absent listing, we must evaluate factors that contribute to the likelihood and time scale for extinction. ...
Habitat conservation
Habitat conservation is a land management practice that seeks to conserve, protect and restore habitat areas for wild plants and animals, especially conservation reliant species, and prevent their extinction, fragmentation or reduction in range. It is a priority of many groups that cannot be easily characterized in terms of any one ideology.