Landscape Architecture and Environmental Planning
... population growth and density, as well as the biophysical implications of those requirements. In a more specific sense, we aim to develop and examine several plausible demographic and biophysical future scenarios for the California Mojave, and evaluate those scenarios with an eye toward habitat loss ...
... population growth and density, as well as the biophysical implications of those requirements. In a more specific sense, we aim to develop and examine several plausible demographic and biophysical future scenarios for the California Mojave, and evaluate those scenarios with an eye toward habitat loss ...
Biotic interactions and plant invasions
... within-community comparisons indicate that introduced species do not consistently receive less damage from natural enemies than do resident competitors (reviewed by Colautti et al. 2004 and Torchin & Mitchell 2004; see also Agrawal et al. 2005; Carpenter & Cappuccino 2005; Parker & Hay 2005). These ...
... within-community comparisons indicate that introduced species do not consistently receive less damage from natural enemies than do resident competitors (reviewed by Colautti et al. 2004 and Torchin & Mitchell 2004; see also Agrawal et al. 2005; Carpenter & Cappuccino 2005; Parker & Hay 2005). These ...
Historical Mammal Extinction on Christmas Island (Indian Ocean
... Sequences were obtainable from all 18 rat samples (100% success rate) with the RAG1 A primers. On the basis of fixed differences in recovered cytochrome b and RAG1 sequences (Table 2), we determined that the samples could be exhaustively divided into two groups. More precisely, modern Rattus rattus ...
... Sequences were obtainable from all 18 rat samples (100% success rate) with the RAG1 A primers. On the basis of fixed differences in recovered cytochrome b and RAG1 sequences (Table 2), we determined that the samples could be exhaustively divided into two groups. More precisely, modern Rattus rattus ...
Species mtDNA genetic diversity explained by infrapopulation size
... consistently differs among bird species when studied in different populations and habitats (Dıaz-Real et al. 2014), so median infrapopulation size can be considered as an inherent characteristic of each host species. Within feather mites some families are parasites of the skin and nasal ...
... consistently differs among bird species when studied in different populations and habitats (Dıaz-Real et al. 2014), so median infrapopulation size can be considered as an inherent characteristic of each host species. Within feather mites some families are parasites of the skin and nasal ...
Biodiversity - University of London International Programmes
... the Social Sciences. Materials for these programmes are developed by academics at the London School of Economics and Political Science (LSE). For more information, see: www.londoninternational.ac.uk ...
... the Social Sciences. Materials for these programmes are developed by academics at the London School of Economics and Political Science (LSE). For more information, see: www.londoninternational.ac.uk ...
Patterns of Plant Diversity in Georgia and Texas Salt Marshes
... (2) the regional pool (all species encountered within each state), (3) the site pool (all species encountered at a site), and (4) the plot (the average number of species in all 1.0×5.0 m plots within a site). In addition to comparing richness values at each scale, we calculated the contributions of ...
... (2) the regional pool (all species encountered within each state), (3) the site pool (all species encountered at a site), and (4) the plot (the average number of species in all 1.0×5.0 m plots within a site). In addition to comparing richness values at each scale, we calculated the contributions of ...
... adapted to undisturbed ecosystems (Berger 1993). Despite the prevalence of weed problems in restoration, the long-term effects of restoration on weeds are not well known. In particular, few studies have compared weed populations among restored and unrestored plant communities. In a study of Californ ...
Beaver reintroduction in Hungary
... unoccupied habitats, especially on the small streams. At the beginning of the reintroduction programme some experts had concerns about the possible conflicts between the beavers and local stakeholders. Because beavers went extinct more than a century ago, there was only speculation about the possibl ...
... unoccupied habitats, especially on the small streams. At the beginning of the reintroduction programme some experts had concerns about the possible conflicts between the beavers and local stakeholders. Because beavers went extinct more than a century ago, there was only speculation about the possibl ...
Analysis of interspecific competition in perennial plants using life table
... effects in terms of growth reduction and therefore neglect potentially important components of individual fitness on population dynamics, such as survival or fecundity 共Aarssen and Keogh 2002兲. If long-term experiments based on multiple fitness trait measurements through time are clearly needed in com ...
... effects in terms of growth reduction and therefore neglect potentially important components of individual fitness on population dynamics, such as survival or fecundity 共Aarssen and Keogh 2002兲. If long-term experiments based on multiple fitness trait measurements through time are clearly needed in com ...
The biology and ecology of narrow endemic and
... range size and variation in floral traits on larger datasets (Garnock-Jones 1976, Kunin and Shmida 1997). Finally, herbivory may play a potentially significant role in the demography of plant populations (Ehrlèn 1996, Escarré et al. 1999) and in some cases limit plant species distributions (Bruelh ...
... range size and variation in floral traits on larger datasets (Garnock-Jones 1976, Kunin and Shmida 1997). Finally, herbivory may play a potentially significant role in the demography of plant populations (Ehrlèn 1996, Escarré et al. 1999) and in some cases limit plant species distributions (Bruelh ...
species diversity and community structure in forest fragments
... (Honnay et al. 1999). However, the influence of human disturbance has generally not been the focus in fragmentation studies (Hobbs & Yates 2003). Thus, whether or not relatively small forest fragments are particularly vulnerable to ongoing anthropogenic disturbances is still not well understood (Ech ...
... (Honnay et al. 1999). However, the influence of human disturbance has generally not been the focus in fragmentation studies (Hobbs & Yates 2003). Thus, whether or not relatively small forest fragments are particularly vulnerable to ongoing anthropogenic disturbances is still not well understood (Ech ...
Guide to protected species surveys
... range, estimated at between 15 and 21ha of rough grassland hunting habitat within 2km of its nest. owls can nest at any time of year. • Barn However, they tend to only produce young between March and August when prey abundance is at its highest. owls do not build a nest but will lay • Barn eggs on a ...
... range, estimated at between 15 and 21ha of rough grassland hunting habitat within 2km of its nest. owls can nest at any time of year. • Barn However, they tend to only produce young between March and August when prey abundance is at its highest. owls do not build a nest but will lay • Barn eggs on a ...
8 Habitat matrix effects on the structure and dynamic
... spatially discrete habitats and are populated by many taxa with complex life cycles, including terrestrial adults that may move among ponds, as insects and amphibians do. The metacommunity perspective differs from metapopulation perspectives, in that the principal issue in metapopulation theory is t ...
... spatially discrete habitats and are populated by many taxa with complex life cycles, including terrestrial adults that may move among ponds, as insects and amphibians do. The metacommunity perspective differs from metapopulation perspectives, in that the principal issue in metapopulation theory is t ...
slides - UBC Botany
... •Most common invasive in USA is a hybrid of two species that do not grow in the same areas of Asia ...
... •Most common invasive in USA is a hybrid of two species that do not grow in the same areas of Asia ...
Commonness, rarity, and intraspecific variation in traits and
... of individuals and species (White et al. 2012; Locey & White 2013). While this work impressively predicts the shape of the SAD, it is still unknown what factors control the commonness and rarity of individual species within the SAD. In other words, ecologists are still challenged by the question of: ...
... of individuals and species (White et al. 2012; Locey & White 2013). While this work impressively predicts the shape of the SAD, it is still unknown what factors control the commonness and rarity of individual species within the SAD. In other words, ecologists are still challenged by the question of: ...
The role of ecological interactions in determining species
... by the associated national recording schemes enables us to address some fundamental questions about the factors controlling species ranges and changes therein. Understanding interactions between phytophagous insects and their food plants is of more than academic interest. The ability to predict how ...
... by the associated national recording schemes enables us to address some fundamental questions about the factors controlling species ranges and changes therein. Understanding interactions between phytophagous insects and their food plants is of more than academic interest. The ability to predict how ...
The location of Dadia
... Dadia through the years • In 1985 the value of the herpetofauna was pointed out by scientists • In 1987 several management projects were undertaken, for example the feeding area • Natura 2000 (E.U. Directive 92/43) declared Dadia as S.P.A. (from brochure) ...
... Dadia through the years • In 1985 the value of the herpetofauna was pointed out by scientists • In 1987 several management projects were undertaken, for example the feeding area • Natura 2000 (E.U. Directive 92/43) declared Dadia as S.P.A. (from brochure) ...
Territoriality in the South African Intertidal Limpet Scutellastra
... effective. L. gigantea has been studied extensively and has been shown to defend a small territory (< 900 cm2) while moving locally to forage [28]. Contrastingly, Scutellastra cochlear maintains a territory of red algae not much larger than the size of its own body, taking many years to mature and m ...
... effective. L. gigantea has been studied extensively and has been shown to defend a small territory (< 900 cm2) while moving locally to forage [28]. Contrastingly, Scutellastra cochlear maintains a territory of red algae not much larger than the size of its own body, taking many years to mature and m ...
species diversity modulates predation
... and how non-prey species modify consumption rates of a predator. We first observed the functional response of the predatory flatworm Stenostomum virginianum (hereafter referred to as predator or Stenostomum) on its ciliate prey Paramecium aurelia (hereafter prey or Paramecium) in the absence and prese ...
... and how non-prey species modify consumption rates of a predator. We first observed the functional response of the predatory flatworm Stenostomum virginianum (hereafter referred to as predator or Stenostomum) on its ciliate prey Paramecium aurelia (hereafter prey or Paramecium) in the absence and prese ...
How functional is functional? Ecological groupings in terrestrial
... Understanding causes and mechanisms of changes in community structure of plants and animals is a key challenge of ecology for predicting future patterns of occurrence, abundance and diversity under global change. The need to transfer knowledge gained from single species to a more generalized approac ...
... Understanding causes and mechanisms of changes in community structure of plants and animals is a key challenge of ecology for predicting future patterns of occurrence, abundance and diversity under global change. The need to transfer knowledge gained from single species to a more generalized approac ...
Application of species distribution models to explain and predict the
... In conjunction with the implementation of the California network of MPAs, ecological surveys using scuba divers were initiated to characterize structure and distribution of populations and biological communities. These surveys were conducted at several MPAs to characterize initial ecological respons ...
... In conjunction with the implementation of the California network of MPAs, ecological surveys using scuba divers were initiated to characterize structure and distribution of populations and biological communities. These surveys were conducted at several MPAs to characterize initial ecological respons ...
Effective Conservation Program (ECP)
... The protective designation element of EC is the overlap between the underlying viable ecosystems and species populations, and those parcels of land or areas of the marine realm that enjoy a designation ...
... The protective designation element of EC is the overlap between the underlying viable ecosystems and species populations, and those parcels of land or areas of the marine realm that enjoy a designation ...
Return of an Icon - Canadian Bison Association
... beetles, at the tunnel entrance, allows chicks the ability to hunt near safety. Burrows with dung have over 75% more insect biomass than those without dung. Dung in and around the burrow informs other owls that this tunnel is occupied – go somewhere else. ...
... beetles, at the tunnel entrance, allows chicks the ability to hunt near safety. Burrows with dung have over 75% more insect biomass than those without dung. Dung in and around the burrow informs other owls that this tunnel is occupied – go somewhere else. ...
Coevolution: A synergy in biology and ecology
... environments. Coevolution occurs at the molecular/ /cellular/individual/population/ecosystem levels. However at the population level is the focus. Organisms have certain ecological investment strategies in the growth process. A large number of experiments have shown that each of the energy investmen ...
... environments. Coevolution occurs at the molecular/ /cellular/individual/population/ecosystem levels. However at the population level is the focus. Organisms have certain ecological investment strategies in the growth process. A large number of experiments have shown that each of the energy investmen ...
hybrid - UBC Botany
... •Most common invasive in USA is a hybrid of two species that do not grow in the same areas of Asia ...
... •Most common invasive in USA is a hybrid of two species that do not grow in the same areas of Asia ...
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.