Wildebeest - Scientific Research Publishing
... Populations of wildebeest (Connochaetes taurinus) still persist in various parts of the African savanna biome, although both population types have suffered declines in various parts of the species’ range. Huge declines in wildebeest population have been reported in the Masai Mara ecosystem by 81% [1 ...
... Populations of wildebeest (Connochaetes taurinus) still persist in various parts of the African savanna biome, although both population types have suffered declines in various parts of the species’ range. Huge declines in wildebeest population have been reported in the Masai Mara ecosystem by 81% [1 ...
Amargosa Vole
... There is relatively little ecological and behavioral information for the Amargosa vole subspecies, so much of the information presented in this section and the other natural history sections that follow are for the California vole, which is simply referred to as the “vole.” Where the information is ...
... There is relatively little ecological and behavioral information for the Amargosa vole subspecies, so much of the information presented in this section and the other natural history sections that follow are for the California vole, which is simply referred to as the “vole.” Where the information is ...
Macroecological scale effects of biodiversity on ecosystem functions
... regions or landforms. Therefore they have nonrandom impacts on macroecological biodiversity patterns and processes (Cardinale et al. 2012; Harfoot et al. 2014). Together these deterministic environmental shifts will shape the strength and direction of any MB–EF relationships (positive, neutral, or n ...
... regions or landforms. Therefore they have nonrandom impacts on macroecological biodiversity patterns and processes (Cardinale et al. 2012; Harfoot et al. 2014). Together these deterministic environmental shifts will shape the strength and direction of any MB–EF relationships (positive, neutral, or n ...
Adaptations to Intraguild Competition
... Carnivores are unique among mammals because their primary competitors are often also their primary predators. Intraguild interactions play a prominent role in shaping ecological communities, so over evolutionary time one might expect species that co-occur with a large number of larger, behaviorally ...
... Carnivores are unique among mammals because their primary competitors are often also their primary predators. Intraguild interactions play a prominent role in shaping ecological communities, so over evolutionary time one might expect species that co-occur with a large number of larger, behaviorally ...
Ecosystems and Population Change Ecosystems and Population
... Wetlands are drained to make way for more farmland to feed people, and forests are cut to supply wood for housing and industries. But at what cost? A sustainable ecosystem survives and functions over a long time. Long-term sustainability is not sacrificed for shortterm gains. Similarly, a sustainabl ...
... Wetlands are drained to make way for more farmland to feed people, and forests are cut to supply wood for housing and industries. But at what cost? A sustainable ecosystem survives and functions over a long time. Long-term sustainability is not sacrificed for shortterm gains. Similarly, a sustainabl ...
Rusty Crayfish (Orconectes rusticus) - GB non
... already become established in GB. Crayfish plague should not be a problem for this North American species, which may be carrying the plague and other parasites/pathogens are of minor consequence. It is also likely to displace other crayfish species (Momot 1997) which may be predators and prey. 40 - ...
... already become established in GB. Crayfish plague should not be a problem for this North American species, which may be carrying the plague and other parasites/pathogens are of minor consequence. It is also likely to displace other crayfish species (Momot 1997) which may be predators and prey. 40 - ...
Wildlife tourism in Kashmir: A case study of Dachigam national park
... should take, on the other. Various fields of the sciences have much to offer to this search, and can guide the inquiry. Today, throughout the world, polarized approaches to level development and management are reducing the potential of both the environment and public benefits from leisure land use. ...
... should take, on the other. Various fields of the sciences have much to offer to this search, and can guide the inquiry. Today, throughout the world, polarized approaches to level development and management are reducing the potential of both the environment and public benefits from leisure land use. ...
Relative herbivory tolerance and competitive ability in two dominant
... replacement. Herbivory tolerance was assessed by cumulative regrowth from defoliated plants of each species and competitive ability was evaluated by relative uptake of a 15N isotope placed into the soil between paired species in the field. Herbivory tolerance was similar for the dominant and subordi ...
... replacement. Herbivory tolerance was assessed by cumulative regrowth from defoliated plants of each species and competitive ability was evaluated by relative uptake of a 15N isotope placed into the soil between paired species in the field. Herbivory tolerance was similar for the dominant and subordi ...
Marine seaweed invasions Josefin Sagerman Impacts and biotic resistance in native ecosystems
... small numbers in the new range. It has become well established that competition and consumption exerted by native species has the potential to limit the success of non-native species, which is termed ‘biotic resistance’ (Elton 1958; Levine et al. 2004; Mitchell et al. 2006). In seaweed communities t ...
... small numbers in the new range. It has become well established that competition and consumption exerted by native species has the potential to limit the success of non-native species, which is termed ‘biotic resistance’ (Elton 1958; Levine et al. 2004; Mitchell et al. 2006). In seaweed communities t ...
Rodent Burrow Systems in North America
... roots and tubers (Meadows 1991). It has also been noted that ecosystems may benefit from rodent burrow systems ...
... roots and tubers (Meadows 1991). It has also been noted that ecosystems may benefit from rodent burrow systems ...
Old-Growth Temperate Rainforests of South America - Sub
... been present in Andean forests, so that few areas can recover fast enough for pioneer trees to reach their maximum longevity and eventually be excluded by slow growing, shade-tolerant tree species (Veblen et al. 1996). In turn, coastal forests at comparable elevations differ greatly in tree species ...
... been present in Andean forests, so that few areas can recover fast enough for pioneer trees to reach their maximum longevity and eventually be excluded by slow growing, shade-tolerant tree species (Veblen et al. 1996). In turn, coastal forests at comparable elevations differ greatly in tree species ...
the Management Plan
... tool, it often deals inappropriately with so called ‘Black Swan Events’ (Taleb, 2007). These are highly improbably but have a significant effect when they occur. In the environmental context they are often relevant and must also be considered. When assessing risk, alternative mitigation measures mus ...
... tool, it often deals inappropriately with so called ‘Black Swan Events’ (Taleb, 2007). These are highly improbably but have a significant effect when they occur. In the environmental context they are often relevant and must also be considered. When assessing risk, alternative mitigation measures mus ...
Feral Cats - Parliament of Tasmania
... (3) (a) What health risks are posed by feral cats; and (b) what is being done to minimise such health risks? (4) (a) Apart from the work done by Tamar Natural Resource Management, is any other work being done in the State to control feral cats; and (b) if so, what is the extent of that work? Mr PARK ...
... (3) (a) What health risks are posed by feral cats; and (b) what is being done to minimise such health risks? (4) (a) Apart from the work done by Tamar Natural Resource Management, is any other work being done in the State to control feral cats; and (b) if so, what is the extent of that work? Mr PARK ...
J. Evol. Biol.
... gonadosomatic index. The majority of site-specific life-history differences were also expressed under common garden–rearing conditions. We propose that apparent conservatism of male life histories is the result of other (genetically based) changes in physiology and behaviour between populations. Tog ...
... gonadosomatic index. The majority of site-specific life-history differences were also expressed under common garden–rearing conditions. We propose that apparent conservatism of male life histories is the result of other (genetically based) changes in physiology and behaviour between populations. Tog ...
global strategy for addressing the problem of invasive alien species
... “island” conditions, either on real islands or in ecological islands, such as aquatic ecosystems. The ecological cost is the irretrievable loss of native species and ecosystems. 9. When invasive species of insects threaten native species of insect, they can also have cascading effects on insect-eati ...
... “island” conditions, either on real islands or in ecological islands, such as aquatic ecosystems. The ecological cost is the irretrievable loss of native species and ecosystems. 9. When invasive species of insects threaten native species of insect, they can also have cascading effects on insect-eati ...
Modelling Food Webs
... relationships to emerge. Community food webs cannot include all species in a habitat (such ...
... relationships to emerge. Community food webs cannot include all species in a habitat (such ...
Durham Hedgerow Survey 2006 - Durham Biodiversity Partnership
... are diminishing. Hedgerow management is no longer a priority, even to livestock farmers as it is not only labour intensive but an unwanted financial burden. Without the financial assistance through agri-environmental schemes and grants, these much needed traditional practices of laying, coppicing an ...
... are diminishing. Hedgerow management is no longer a priority, even to livestock farmers as it is not only labour intensive but an unwanted financial burden. Without the financial assistance through agri-environmental schemes and grants, these much needed traditional practices of laying, coppicing an ...
Ecology of stoats Mustela erminea in a valley of the
... There is very little information on the ecology of stoats Mustela erminea in the Iberian Peninsula, the southwestern limits of their Eurasian range. The aim of this study is to gain more knowledge of some ecological aspects of Iberian stoats, principally habitat and diet, by direct observation and s ...
... There is very little information on the ecology of stoats Mustela erminea in the Iberian Peninsula, the southwestern limits of their Eurasian range. The aim of this study is to gain more knowledge of some ecological aspects of Iberian stoats, principally habitat and diet, by direct observation and s ...
“The History And Future Of Island Conservation In A Snail Shell”
... often only assess ecosystems after a period of decline (Pauly, 1995). This means that any assessment of threat is made from already degraded systems, underestimating the true threat or loss incurred. To rectify this there are now a number of methods being used to estimate the historic abundance or r ...
... often only assess ecosystems after a period of decline (Pauly, 1995). This means that any assessment of threat is made from already degraded systems, underestimating the true threat or loss incurred. To rectify this there are now a number of methods being used to estimate the historic abundance or r ...
Population structure of the pearly razorfish - Scientia Marina
... the four seasons); (2) ‘Location’ (a random factor with three levels and orthogonal to ‘Time’); and (3) ‘Site’ (a random factor with two levels nested within ‘Location’ and ‘Time’). In particular, analyses focused on the effects of ‘Time’ and its interaction term with ‘Location’ (‘T×L’). Prior to th ...
... the four seasons); (2) ‘Location’ (a random factor with three levels and orthogonal to ‘Time’); and (3) ‘Site’ (a random factor with two levels nested within ‘Location’ and ‘Time’). In particular, analyses focused on the effects of ‘Time’ and its interaction term with ‘Location’ (‘T×L’). Prior to th ...
Towards a cohesive, holistic view of top predation: a definition
... powerful demonstrations of its application to large predators (Wootton and Bell 1992, Lahaye et al. 1994). This has directed much research towards spatial issues such as minimum habitat requirements, population viability analysis and the role of corridors for population persistence. Meanwhile, sever ...
... powerful demonstrations of its application to large predators (Wootton and Bell 1992, Lahaye et al. 1994). This has directed much research towards spatial issues such as minimum habitat requirements, population viability analysis and the role of corridors for population persistence. Meanwhile, sever ...
Alabama 4-H Wildlife Habitat Evaluation Program State Manual
... science and management. The Ruffed Grouse Society, Rocky Mountain Elk Foundation, and the USDA Cooperative State Research, Education and Extension Service were added as sponsors of the manual revision. The manual incorporates the basic concepts originated by Byford and Hill with the addition of land ...
... science and management. The Ruffed Grouse Society, Rocky Mountain Elk Foundation, and the USDA Cooperative State Research, Education and Extension Service were added as sponsors of the manual revision. The manual incorporates the basic concepts originated by Byford and Hill with the addition of land ...
MACRO-INVERTEBRATE FUNCTIONAL GROUPS IN
... zones of lakes and even more of oceans, strong ecological interactions of the major species are based on trophic interactions with a system-wide spatial scale. In benthic systems, the spatial scale of effects appears much more variable at the watersediment interface. This scale ranges from the sedim ...
... zones of lakes and even more of oceans, strong ecological interactions of the major species are based on trophic interactions with a system-wide spatial scale. In benthic systems, the spatial scale of effects appears much more variable at the watersediment interface. This scale ranges from the sedim ...
OPPORTUNISTIC EVOLUTION: ABIOTIC ENVIRONMENTAL
... Gould and Lewontin, 1979; Alberch, 1982) or by modifying more general population-level approaches (e.g.: Slatkin, 1981; Lande, 1985). An additional element to be considered is the role of changing global ecosystems through time. The dominant morphologies and life histories of plants and animals, and ...
... Gould and Lewontin, 1979; Alberch, 1982) or by modifying more general population-level approaches (e.g.: Slatkin, 1981; Lande, 1985). An additional element to be considered is the role of changing global ecosystems through time. The dominant morphologies and life histories of plants and animals, and ...
Modelling Food Webs Abstract 1 Introduction
... relationships to emerge. Community food webs cannot include all species in a habitat (such as all the bacteria living within plants and animals), but rather focus on a set of different types of species, which are chosen prior to analyzing their predator-prey relationships. This reduction of the ric ...
... relationships to emerge. Community food webs cannot include all species in a habitat (such as all the bacteria living within plants and animals), but rather focus on a set of different types of species, which are chosen prior to analyzing their predator-prey relationships. This reduction of the ric ...
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.