Patterns of habitat use and segregation among African large
... which habitat loss and fragmentation are happening, the need for space that allows species coexistence should sound like a warning bell. In Chapter Four we investigated how the species are affected by and adapt to anthropogenic habitat modification and human activities near the boundary of a protect ...
... which habitat loss and fragmentation are happening, the need for space that allows species coexistence should sound like a warning bell. In Chapter Four we investigated how the species are affected by and adapt to anthropogenic habitat modification and human activities near the boundary of a protect ...
South Australian Arid Lands Biodiversity Strategy
... supports variety of habitats. The arid north is underlain by basement rock up to 2,000 million years old, and is covered by sand plains and dunes that support Mulga woodlands and chenopod shrublands. The neighbouring undulating, gibber-covered Arcoona tablelands are much younger in comparison. The g ...
... supports variety of habitats. The arid north is underlain by basement rock up to 2,000 million years old, and is covered by sand plains and dunes that support Mulga woodlands and chenopod shrublands. The neighbouring undulating, gibber-covered Arcoona tablelands are much younger in comparison. The g ...
Latitude, seed predation and seed mass
... Both the generality of the above mechanism, and the wide range of taxa displaying latitudinal gradients in predation or herbivory, suggest that levels of seed predation might be higher towards the tropics. However, the only paper we are aware of that investigates this relationship is by Garcia et al ...
... Both the generality of the above mechanism, and the wide range of taxa displaying latitudinal gradients in predation or herbivory, suggest that levels of seed predation might be higher towards the tropics. However, the only paper we are aware of that investigates this relationship is by Garcia et al ...
Family Euphaeidae - Department of Ecology, Evolution, and
... marshlands of southern Mesopotamia since antiquity. Dragonflies are mentioned in the ancient Sumerian Epic of Gilgamesh and Poem of Atrahasis several times, and one of these poems alludes to the dragonfly “leaving its skin” in the process of molting (Betoret 1993). These references to dragonflies in ...
... marshlands of southern Mesopotamia since antiquity. Dragonflies are mentioned in the ancient Sumerian Epic of Gilgamesh and Poem of Atrahasis several times, and one of these poems alludes to the dragonfly “leaving its skin” in the process of molting (Betoret 1993). These references to dragonflies in ...
Recovery, Conservation, and Survival under the Endangered
... Protecting and recovering endangered and threatened species is bad business. It is a short-term, high-risk, and high-cost proposition-not exactly a formula for success. It is also an unpopular business. Resource users cringe at the prospect of the burdensome regulations and widespread litigation tha ...
... Protecting and recovering endangered and threatened species is bad business. It is a short-term, high-risk, and high-cost proposition-not exactly a formula for success. It is also an unpopular business. Resource users cringe at the prospect of the burdensome regulations and widespread litigation tha ...
Risk analysis of the - Belgian Biodiversity Platform
... Because of the large distances to be travelled, a natural expansion of grey squirrel populations from the British Isles or Northern Italy is unlikely to cause species arrival and establishment in Belgium in the coming years. However, establishment due to escape/release from captive breeding is much ...
... Because of the large distances to be travelled, a natural expansion of grey squirrel populations from the British Isles or Northern Italy is unlikely to cause species arrival and establishment in Belgium in the coming years. However, establishment due to escape/release from captive breeding is much ...
Habitat complexity: approaches and future directions
... relationship, which suggests independent effects of area and habitat complexity on species accumulation. At the patch scale, habitat complexity can increase species richness over and above effects of patch size (Taniguchi et al., 2003; Matias et al., 2010), illustrating the importance of the physica ...
... relationship, which suggests independent effects of area and habitat complexity on species accumulation. At the patch scale, habitat complexity can increase species richness over and above effects of patch size (Taniguchi et al., 2003; Matias et al., 2010), illustrating the importance of the physica ...
Science advice from a risk assessment of five
... evaluated in this risk assessment. As the evaluated tunicates were found to pose a high risk, the Club Tunicate, therefore, poses a high risk for its fellow travelers. Since natural long distance dispersal appears very limited, increased management of humanmediated dispersal vectors could substantia ...
... evaluated in this risk assessment. As the evaluated tunicates were found to pose a high risk, the Club Tunicate, therefore, poses a high risk for its fellow travelers. Since natural long distance dispersal appears very limited, increased management of humanmediated dispersal vectors could substantia ...
Leaf gas exchange responses of 13 prairie grassland
... Data from four individual leaves, each measured on a separate day, were averaged for each replicate plot to provide an estimate of plot response to the treatment combinations within each year. Therefore, plot was the experimental unit used in ANOVA. For each of the nine variables analysed (Table 2), ...
... Data from four individual leaves, each measured on a separate day, were averaged for each replicate plot to provide an estimate of plot response to the treatment combinations within each year. Therefore, plot was the experimental unit used in ANOVA. For each of the nine variables analysed (Table 2), ...
fisken og
... areas there is a limited to moderate risk that a bio-invasion of C. gigas will develop. For Biogenic reefs and Sub-littoral sediment in high energy areas there is a moderate to high risk for a bio-invasion. A risk assessment was performed for each of the four habitat types: It is concluded that for ...
... areas there is a limited to moderate risk that a bio-invasion of C. gigas will develop. For Biogenic reefs and Sub-littoral sediment in high energy areas there is a moderate to high risk for a bio-invasion. A risk assessment was performed for each of the four habitat types: It is concluded that for ...
Comparative size evolution of marine clades from the Late Permian
... significant changes in the central tendency, even though most of the log-transformed size distributions are close to normal. Maximum Size.—We compared maximum sizes between stages for each clade using both raw data and data subsampled to a uniform number of species. Subsampling was required to assess ...
... significant changes in the central tendency, even though most of the log-transformed size distributions are close to normal. Maximum Size.—We compared maximum sizes between stages for each clade using both raw data and data subsampled to a uniform number of species. Subsampling was required to assess ...
fitzgerald biosphere recovery plan
... actions is subject to budgetary and other constraints affecting the parties involved, as well as the need to address other priorities. Recovery Plans do not necessarily represent the views or the official positions of individuals or organisations represented on the Recovery Team. It is intended that ...
... actions is subject to budgetary and other constraints affecting the parties involved, as well as the need to address other priorities. Recovery Plans do not necessarily represent the views or the official positions of individuals or organisations represented on the Recovery Team. It is intended that ...
fragmentation of terrestrial habitat
... relationships because of natural and anthropogenic mechanisms. Habitat fragmentation is arguably the greatest conservation challenge facing today’s wildlife biologists, of which most biologists are keenly aware because habitat is a unifying resource for most wildlife conservation efforts. For the pa ...
... relationships because of natural and anthropogenic mechanisms. Habitat fragmentation is arguably the greatest conservation challenge facing today’s wildlife biologists, of which most biologists are keenly aware because habitat is a unifying resource for most wildlife conservation efforts. For the pa ...
Spruce budworm outbreaks and the incidence of vagrancy in
... middle Pacific Coast (northern California) and southern Pacific Coast (southern California) published in American Birds/National Audubon Society Field Notes and from Roberson (1980). Only records from the fall migration period (mid-August through November) in 1972 through 1994 inclusive were used. S ...
... middle Pacific Coast (northern California) and southern Pacific Coast (southern California) published in American Birds/National Audubon Society Field Notes and from Roberson (1980). Only records from the fall migration period (mid-August through November) in 1972 through 1994 inclusive were used. S ...
landscape connectivity: a return to the basics
... Heterogeneity and asymmetrical landscape connectivity In assessing the functional connectivity of a landscape, one needs to keep in mind that regions that facilitate movement need not be discrete features of the landscape such as habitat corridors, but may occur where the juxtaposition of particular ...
... Heterogeneity and asymmetrical landscape connectivity In assessing the functional connectivity of a landscape, one needs to keep in mind that regions that facilitate movement need not be discrete features of the landscape such as habitat corridors, but may occur where the juxtaposition of particular ...
Making Space for Nature: Network
... before setting out a prioritised set of ecological solutions to improve the network. Finally, we make 24 recommendations for practical action to Make Space for Nature and achieve a coherent and resilient ecological network. Throughout, we stress that what is needed is a step-change in nature conserv ...
... before setting out a prioritised set of ecological solutions to improve the network. Finally, we make 24 recommendations for practical action to Make Space for Nature and achieve a coherent and resilient ecological network. Throughout, we stress that what is needed is a step-change in nature conserv ...
Allee Effects
... stop increasing consumption depends on the predator rather than the prey, predator satiation has the potential to affect any population fed upon by a predator that does not numerically track the abundance of the small prey population, such as when a generalist predator feeds on multiple species (Kra ...
... stop increasing consumption depends on the predator rather than the prey, predator satiation has the potential to affect any population fed upon by a predator that does not numerically track the abundance of the small prey population, such as when a generalist predator feeds on multiple species (Kra ...
A STUDY OF THE REEF FISH COMMUNITIES OF LAS PERLAS
... levels returned, suggesting that fish communities are resilient with only a weak dependence on coral cover other than by a few coral specialists. In some instances, with some fish species, dead coral can be as important as live coral. Some species have been shown to increase with coral rubble (Russ ...
... levels returned, suggesting that fish communities are resilient with only a weak dependence on coral cover other than by a few coral specialists. In some instances, with some fish species, dead coral can be as important as live coral. Some species have been shown to increase with coral rubble (Russ ...
Edge effects on the regeneration of forest fragments in south Brazil
... Forested environments are being cleared all over the world. From 1981 to 1990, the loss of tropical forests was estimated at 154 million ha. As a result of that, the interface between forest and open environment has increased greatly. General patterns of species distribution and dynamics in these fo ...
... Forested environments are being cleared all over the world. From 1981 to 1990, the loss of tropical forests was estimated at 154 million ha. As a result of that, the interface between forest and open environment has increased greatly. General patterns of species distribution and dynamics in these fo ...
Does increased habitat complexity reduce predation and
... Habitats with high structural complexity typically support more species and individuals than nearby less complex habitats (Bell et al. 1991). One mechanism proposed to explain this general pattern is that high structural complexity reduces competition and predation (Holt 1987, Hixon and Menge 1991). ...
... Habitats with high structural complexity typically support more species and individuals than nearby less complex habitats (Bell et al. 1991). One mechanism proposed to explain this general pattern is that high structural complexity reduces competition and predation (Holt 1987, Hixon and Menge 1991). ...
Identifying potential environmental impacts of large - TSEC
... between compartments within a ecosystem. Understand the rates of these processes is first step in managing ecosystems for maximum benefit for both biodiversity and yield. ...
... between compartments within a ecosystem. Understand the rates of these processes is first step in managing ecosystems for maximum benefit for both biodiversity and yield. ...
Cryptic Population Dynamics: Rapid Evolution Masks Trophic
... microcosms, but without this knowledge, we would infer from observed patterns in abundance that the species are weakly or not at all linked. Mathematical modeling shows that this kind of cryptic dynamics occurs when there is rapid prey or host evolution for traits conferring defense against attack, ...
... microcosms, but without this knowledge, we would infer from observed patterns in abundance that the species are weakly or not at all linked. Mathematical modeling shows that this kind of cryptic dynamics occurs when there is rapid prey or host evolution for traits conferring defense against attack, ...
Pelagic Organism Decline Progress Report: 2007 Synthesis of Results
... west Delta. Our second set of conceptual models focused on temporal and species-specific interactions of these stressors. Towards this end, we developed individual conceptual models for each species that incorporate seasonal and geographic variability in how stressors act upon a species. We also beg ...
... west Delta. Our second set of conceptual models focused on temporal and species-specific interactions of these stressors. Towards this end, we developed individual conceptual models for each species that incorporate seasonal and geographic variability in how stressors act upon a species. We also beg ...
Direct and indirect effects of nutrients on
... exposure). I also performed correlations between species showing a response to guano and other members of the community to look for significant patterns of association among the dominant species. Significant correlations would be consistent with a hypothesis of interactions among species, which migh ...
... exposure). I also performed correlations between species showing a response to guano and other members of the community to look for significant patterns of association among the dominant species. Significant correlations would be consistent with a hypothesis of interactions among species, which migh ...
Limasawa CoT Assessment April 2013
... undulatus), often cited as a predator of A. planci, found no evidence that they had been predated despite being at outbreak levels on certain sections of the reef (Sweatman, 1995). Alternatively it has been suggested that overfishing of predatory fish could lead to trophic cascades. With fewer large ...
... undulatus), often cited as a predator of A. planci, found no evidence that they had been predated despite being at outbreak levels on certain sections of the reef (Sweatman, 1995). Alternatively it has been suggested that overfishing of predatory fish could lead to trophic cascades. With fewer large ...