Diet and seasonal dispersal of extralimital giraffe at Sanbona
... and in Kwa-Zulu Natal, where browse from the genus Acacia was preferred throughout the year (Bond & Loffell 2001), the Sanbona population consumed significantly less A. karroo in winter, most likely due to frost related foliage lost, with S. afra becoming the most browsed species. These results were ...
... and in Kwa-Zulu Natal, where browse from the genus Acacia was preferred throughout the year (Bond & Loffell 2001), the Sanbona population consumed significantly less A. karroo in winter, most likely due to frost related foliage lost, with S. afra becoming the most browsed species. These results were ...
Development of Management Plans for the Conservation
... Conventions signed by the State of Mauritius. If adequately enforced and implemented, these legal and policy tools provide the basis for the protection, conservation, and restoration of the islets. A full discussion of the legal and institutional issues can be found in the Strategic Plan 2004 of the ...
... Conventions signed by the State of Mauritius. If adequately enforced and implemented, these legal and policy tools provide the basis for the protection, conservation, and restoration of the islets. A full discussion of the legal and institutional issues can be found in the Strategic Plan 2004 of the ...
Correcting widespread misidentifications of the highly abundant and
... among sites in the Philippines and a site near the species’ type locality in Indonesia, constituting a single species. Further, given S. longiceps was never morphologically or genetically-identified at any location in this study, nor in other nation-wide studies now in progress by the National Fisher ...
... among sites in the Philippines and a site near the species’ type locality in Indonesia, constituting a single species. Further, given S. longiceps was never morphologically or genetically-identified at any location in this study, nor in other nation-wide studies now in progress by the National Fisher ...
pest risk assessment - Department of Primary Industries, Parks
... Members of the Pogona genus are territorial, and are not noted for forming groups in the wild. Males stake out territories and male-male dominance is determined by body size (Doneley, 2006). Aggressive behaviour among males includes posturing, beard displays, and combat involving circling and tail b ...
... Members of the Pogona genus are territorial, and are not noted for forming groups in the wild. Males stake out territories and male-male dominance is determined by body size (Doneley, 2006). Aggressive behaviour among males includes posturing, beard displays, and combat involving circling and tail b ...
this PDF file
... exchange genes within themselves but are reproductively isolated from other such groups. It means that there is no gene flow between two of such community [2]. They have separate ancestor-descendent tree of life with different tendencies and evolutionary path. Speciation is the division of one singl ...
... exchange genes within themselves but are reproductively isolated from other such groups. It means that there is no gene flow between two of such community [2]. They have separate ancestor-descendent tree of life with different tendencies and evolutionary path. Speciation is the division of one singl ...
Effects of local adaptation and interspecific competition on species
... hills of a new adaptive landscape. This evolution in response to a changing adaptive landscape has been explored theoretically,5–8 and a few recent models have examined how the presence of a population at the top of a fitness peak (local adaptation) affects geographic range shifts and future adaptiv ...
... hills of a new adaptive landscape. This evolution in response to a changing adaptive landscape has been explored theoretically,5–8 and a few recent models have examined how the presence of a population at the top of a fitness peak (local adaptation) affects geographic range shifts and future adaptiv ...
Tradeoffs in seedling growth and survival within and across tropical
... 2007). These data may not adequately represent adaptations of young plants in the wild (Bloor 2003; Cornelissen et al. 2003). Our approach complements and builds on previous studies of microhabitat trade-offs conducted with seeded or transplanted seedlings, noting that there are potential benefits a ...
... 2007). These data may not adequately represent adaptations of young plants in the wild (Bloor 2003; Cornelissen et al. 2003). Our approach complements and builds on previous studies of microhabitat trade-offs conducted with seeded or transplanted seedlings, noting that there are potential benefits a ...
AND SPECIES RICHNESS
... similarsize and functionalstatus,while avoiding some of the pitfalls that Huston (85) described,may not advancesubstantiallyour understandingof naturalcommunities. Naturalcommunitiescomprise species that differ in size and function; as a result,the effect of the loss of diversityis interpretedmore e ...
... similarsize and functionalstatus,while avoiding some of the pitfalls that Huston (85) described,may not advancesubstantiallyour understandingof naturalcommunities. Naturalcommunitiescomprise species that differ in size and function; as a result,the effect of the loss of diversityis interpretedmore e ...
The Northern Tall Grass Prairie
... 10% are dependent upon bottomland and riparian forest, and about 7% use shrubby habitats. While roughly 20% of the species breed in upland forests, all occur at relatively low densities compared to other parts of their ranges, perhaps reflecting the peripheral nature of this habitat type in the plan ...
... 10% are dependent upon bottomland and riparian forest, and about 7% use shrubby habitats. While roughly 20% of the species breed in upland forests, all occur at relatively low densities compared to other parts of their ranges, perhaps reflecting the peripheral nature of this habitat type in the plan ...
Choosing appropriate temporal and spatial scales for ecological
... straightforward and obvious. A given site has been manhandled by the saw, plow, cow or by some other instrument(s) of anthropogenic transformation. It has now been abandoned or retired and by good fortune or foresight it has become a locus for ecological restoration. To what ecological condition sho ...
... straightforward and obvious. A given site has been manhandled by the saw, plow, cow or by some other instrument(s) of anthropogenic transformation. It has now been abandoned or retired and by good fortune or foresight it has become a locus for ecological restoration. To what ecological condition sho ...
University of Groningen The Serengeti food web de Visser
... to better understand how human activities have changed species composition, diversity and functioning. Theoretical studies modelled how network properties change under human-induced, non-random species loss. However, we lack data on realistic species-loss sequences in threatened, real-world food web ...
... to better understand how human activities have changed species composition, diversity and functioning. Theoretical studies modelled how network properties change under human-induced, non-random species loss. However, we lack data on realistic species-loss sequences in threatened, real-world food web ...
Agriculture, Ecosystems and Environment The
... among ecosystem attributes, processes/functions, services and biodiversity are continually being clarified, especially to make them more easily applied to management (Wallace, 2007; Mace et al., 2012). For example, biodiversity in itself may not be a service, but its maintenance can be. It has recent ...
... among ecosystem attributes, processes/functions, services and biodiversity are continually being clarified, especially to make them more easily applied to management (Wallace, 2007; Mace et al., 2012). For example, biodiversity in itself may not be a service, but its maintenance can be. It has recent ...
At high densities kangaroo grazing can reduce biodiversity
... reach very high densities in south-eastern Australia due to the absence of predators and ready access to permanent water in farm dams. At high densities, kangaroos reduce abundance and diversity of plants and reptiles, degrade bird habitat and threaten an endangered mammal. Detection of the vulnerab ...
... reach very high densities in south-eastern Australia due to the absence of predators and ready access to permanent water in farm dams. At high densities, kangaroos reduce abundance and diversity of plants and reptiles, degrade bird habitat and threaten an endangered mammal. Detection of the vulnerab ...
Captive Population Management and Conservation
... Examples of this type of research include the development of microsatellite DNA markers for Amur tigers (Zhang et al., 2004), developing non-invasive molecular sexing technique for St. Vincent Amazon parrot (Russello and Amato, 2001) and developing alternative approaches to reversible contraception ...
... Examples of this type of research include the development of microsatellite DNA markers for Amur tigers (Zhang et al., 2004), developing non-invasive molecular sexing technique for St. Vincent Amazon parrot (Russello and Amato, 2001) and developing alternative approaches to reversible contraception ...
Ecological Heterogeneity in the Effects of Grazing and Fire on
... recent years, the maintenance of appropriate disturbance regimes has also become recognized as a general principle in conservation biology (e.g., Meffe & Carroll 1997 ). Yet in a world of ever-increasing movement of propagules across former biotic boundaries, wildlands managers face a fundamental di ...
... recent years, the maintenance of appropriate disturbance regimes has also become recognized as a general principle in conservation biology (e.g., Meffe & Carroll 1997 ). Yet in a world of ever-increasing movement of propagules across former biotic boundaries, wildlands managers face a fundamental di ...
A Consumer-Resource Approach to Community Structure1 The
... The biosphere contains over a million described species, and possibly another probably peculiar to those species. Howmillion species yet to be described. Any ever, the similar patterns observed among given community may contain hundreds of communities suggest that there may be a species, each intera ...
... The biosphere contains over a million described species, and possibly another probably peculiar to those species. Howmillion species yet to be described. Any ever, the similar patterns observed among given community may contain hundreds of communities suggest that there may be a species, each intera ...
Native Fauna on Exotic Trees: Phylogenetic
... (Lawton and Schröder 1977; Conner et al. 1980; Neuvonen and Niemelä 1981; Kennedy and Southwood 1984; Brändle and Brandl 2001) or effect sizes were quite low (Roques et al. 2006). Winter (1974) even showed that, at least in some cases, colonization from the distantly related surrounding herb and ...
... (Lawton and Schröder 1977; Conner et al. 1980; Neuvonen and Niemelä 1981; Kennedy and Southwood 1984; Brändle and Brandl 2001) or effect sizes were quite low (Roques et al. 2006). Winter (1974) even showed that, at least in some cases, colonization from the distantly related surrounding herb and ...
Ecology is - El Paso High School
... populations, communities, ecosystems, and the biosphere. 3. Over time species have adapted, died, or moved to more suitable environments. ...
... populations, communities, ecosystems, and the biosphere. 3. Over time species have adapted, died, or moved to more suitable environments. ...
Carnivore conservation: shifting the paradigm from control to
... large cattle station in Australia, where full implementation of such nonlethal strategies may be prohibitive, Wallach et al. (this issue) argue that simply ending lethal control of dingoes reduced depredation by allowing the social structure of the predator to stabilize, and additionally that cattle ...
... large cattle station in Australia, where full implementation of such nonlethal strategies may be prohibitive, Wallach et al. (this issue) argue that simply ending lethal control of dingoes reduced depredation by allowing the social structure of the predator to stabilize, and additionally that cattle ...
Trophically Unique Species Are Vulnerable to Cascading Extinction Linköping University Postprint
... position of the primary extinction is also important but tends to interact with connectance. In sparsely connected communities, extinction of a top predator is less likely to cause secondary extinctions than extinction of a basal species (Borrvall et al. 2000; Quince et al. 2005; Eklöf and Ebenman ...
... position of the primary extinction is also important but tends to interact with connectance. In sparsely connected communities, extinction of a top predator is less likely to cause secondary extinctions than extinction of a basal species (Borrvall et al. 2000; Quince et al. 2005; Eklöf and Ebenman ...
global efforts to limit Australian acacia invasions
... and so the extent of invasions is the result of greater introduction and dissemination efforts. Even if the former were true, and managers needed to concentrate only on existing known invaders, Australian acacia invasions are still likely to increase in global extent over the next few decades (Richa ...
... and so the extent of invasions is the result of greater introduction and dissemination efforts. Even if the former were true, and managers needed to concentrate only on existing known invaders, Australian acacia invasions are still likely to increase in global extent over the next few decades (Richa ...
The inability of northern whelks to drill the range extending barnacle
... 1) Do whelks prefer to drill other barnacles more than Tetraclita? In both lab and field studies, N. ostrina and N. canaliculata demonstrated a clear preference for barnacle species other than Tetraclita (Figures 15). N. ostrina from Kibesillah Hill and Soberanes Point were unable or unwilling to dr ...
... 1) Do whelks prefer to drill other barnacles more than Tetraclita? In both lab and field studies, N. ostrina and N. canaliculata demonstrated a clear preference for barnacle species other than Tetraclita (Figures 15). N. ostrina from Kibesillah Hill and Soberanes Point were unable or unwilling to dr ...
Assessment of Yellow Crazy Ants (Anoplolepis gracilipes) on
... containing a fertile queen and enough workers to maintain a functional colony are carried with produce or cargo to new locations. This phenomenon is not new and has actually been going on for centuries. Pheidole megacephala was carried throughout the Pacific region including Australia by ships carry ...
... containing a fertile queen and enough workers to maintain a functional colony are carried with produce or cargo to new locations. This phenomenon is not new and has actually been going on for centuries. Pheidole megacephala was carried throughout the Pacific region including Australia by ships carry ...
Island restoration
The ecological restoration of islands, or island restoration, is the application of the principles of ecological restoration to islands and island groups. Islands, due to their isolation, are home to many of the world's endemic species, as well as important breeding grounds for seabirds and some marine mammals. Their ecosystems are also very vulnerable to human disturbance and particularly to introduced species, due to their small size. Island groups such as New Zealand and Hawaii have undergone substantial extinctions and losses of habitat. Since the 1950s several organisations and government agencies around the world have worked to restore islands to their original states; New Zealand has used them to hold natural populations of species that would otherwise be unable to survive in the wild. The principal components of island restoration are the removal of introduced species and the reintroduction of native species.