Selecting umbrella species for conservation
... occupying similar habitats. We examine which of these species could, theoretically, offer the largest conservation benefit for other species (i.e., be the most effective and efficient candidate for an umbrella species) by quantifying both the degree of spatial co-occurrence, as well as the niche overl ...
... occupying similar habitats. We examine which of these species could, theoretically, offer the largest conservation benefit for other species (i.e., be the most effective and efficient candidate for an umbrella species) by quantifying both the degree of spatial co-occurrence, as well as the niche overl ...
Holocarpha macradenia response to experimental disturbance
... Regardless of the specific disturbance regime of the past, humans have severely altered ecosystems through fire suppression and various management regimes of domestic ungulate grazing (Burcham 1975, Callaway and Davis 1993). California’s grasslands have also been impacted by the invasion of exotic g ...
... Regardless of the specific disturbance regime of the past, humans have severely altered ecosystems through fire suppression and various management regimes of domestic ungulate grazing (Burcham 1975, Callaway and Davis 1993). California’s grasslands have also been impacted by the invasion of exotic g ...
DG - FSU Biology - Florida State University
... mangle. This species has high dispersal capabilities, broad tolerance, and few natural enemies in Hawaii; as a consequence, the mangrove habitat appears to be expanding rapidly. Prior to the very recent invasion of mangroves, the intertidal zone of Hawaii essentially lacked vascular plants. The intr ...
... mangle. This species has high dispersal capabilities, broad tolerance, and few natural enemies in Hawaii; as a consequence, the mangrove habitat appears to be expanding rapidly. Prior to the very recent invasion of mangroves, the intertidal zone of Hawaii essentially lacked vascular plants. The intr ...
Ecological impacts of invasive species: community and ecosystem
... From D’Antonio et al. (2000) Series of 14 study sites (#’s) from eastern coastal lowlands to seasonal submontane zone on Big Island, Hawaii Lowlands: warm tropical zone with 1500-2000 mm yr-1, but dry summers; elevation from sea level to 400 m Submontane: several °C cooler, but similar amount and se ...
... From D’Antonio et al. (2000) Series of 14 study sites (#’s) from eastern coastal lowlands to seasonal submontane zone on Big Island, Hawaii Lowlands: warm tropical zone with 1500-2000 mm yr-1, but dry summers; elevation from sea level to 400 m Submontane: several °C cooler, but similar amount and se ...
Pairwise interactions between functional groups
... constant (Byrnes and Stachowicz, 2009; Ives et al., 2005; Sih et al., 1998). These additive designs generally include relatively small numbers of predator species, because total predator densities at the highest species-richness levels rapidly escalate as more species are added. Analyses generally u ...
... constant (Byrnes and Stachowicz, 2009; Ives et al., 2005; Sih et al., 1998). These additive designs generally include relatively small numbers of predator species, because total predator densities at the highest species-richness levels rapidly escalate as more species are added. Analyses generally u ...
American Burying Beetle Nicrophorus americanus
... The species has one generation over the period of a year, with individuals existing from the summer to their death in the following year. Individuals will typically have the opportunity to reproduce only once. Following emergence from the ground, in the late summer or early fall of the year in which ...
... The species has one generation over the period of a year, with individuals existing from the summer to their death in the following year. Individuals will typically have the opportunity to reproduce only once. Following emergence from the ground, in the late summer or early fall of the year in which ...
Ecological Considerations in the Design of River and Stream
... important functions of movement at a population level. Dispersal of individuals provides a mechanism for regulating population density. These dispersing individuals maintain gene flow among populations and may supplement populations where recruitment is unable to keep pace with the loss of individua ...
... important functions of movement at a population level. Dispersal of individuals provides a mechanism for regulating population density. These dispersing individuals maintain gene flow among populations and may supplement populations where recruitment is unable to keep pace with the loss of individua ...
Evolution, Biological Communities, and Species Interactions
... life span—a million or more years—some mutations are thought to have given those individuals an advantage under the selection pressures of their environment at that time. The result is a species population that differs from those of numerous preceding generations. ...
... life span—a million or more years—some mutations are thought to have given those individuals an advantage under the selection pressures of their environment at that time. The result is a species population that differs from those of numerous preceding generations. ...
Four decades of research on the Medes Islands
... A new bionomic map (natural communities) of the submerged area of the Natural Park has been done, thirty years after the first one, and knowledge of the bottom has greatly improved due to the ongoing activities of research and monitoring throughout these years. While, in general, the available resou ...
... A new bionomic map (natural communities) of the submerged area of the Natural Park has been done, thirty years after the first one, and knowledge of the bottom has greatly improved due to the ongoing activities of research and monitoring throughout these years. While, in general, the available resou ...
Polychaetes of the soft bottoms of the Straits of Magellan - ICM-CSIC
... SUMMARY: Species composition, distribution and biogeography of polychaetes collected from the soft bottoms of the Straits of Magellan (South America) in February-March 1991 are reported. In 16 benthic samples, collected with different tools (Charcot and triangular dredges, van Veen grab), a total of ...
... SUMMARY: Species composition, distribution and biogeography of polychaetes collected from the soft bottoms of the Straits of Magellan (South America) in February-March 1991 are reported. In 16 benthic samples, collected with different tools (Charcot and triangular dredges, van Veen grab), a total of ...
Biological Diversity
... experience is that if we set out to eliminate a disease-causing species, we must attack it completely at the outset and destroy all the individuals before natural selection leads to resistance. But sometimes this may be an impossible task, in part because of the natural genetic variation in the targ ...
... experience is that if we set out to eliminate a disease-causing species, we must attack it completely at the outset and destroy all the individuals before natural selection leads to resistance. But sometimes this may be an impossible task, in part because of the natural genetic variation in the targ ...
Ecological Niches and Diversity Maintenance
... patterns have been documented [1], but the mechanisms behind these patterns remain poorly understood. If we knew the mechanisms, surer decisions in conservation and management would be possible. Understanding can be sought in many different ways. A dominant approach in community ecology is to search ...
... patterns have been documented [1], but the mechanisms behind these patterns remain poorly understood. If we knew the mechanisms, surer decisions in conservation and management would be possible. Understanding can be sought in many different ways. A dominant approach in community ecology is to search ...
Appendix 2. Revision of the questions on the environmental impact
... In this question we rate the current environmental impact in other invaded regions that can be used as an indicator for determining the potential environmental impact in the PRA area (Q6.09). If the species has not invaded any other area, or if the invasion is too recent and too little is known abou ...
... In this question we rate the current environmental impact in other invaded regions that can be used as an indicator for determining the potential environmental impact in the PRA area (Q6.09). If the species has not invaded any other area, or if the invasion is too recent and too little is known abou ...
Dan Cogălniceanu • Biodiversity
... Biodiversity, defined as “the variety of life on earth, including all genes, species and ecosystems and the ecological processes of which they are part“ has continued to grow as and has become one of the key buzzwords of the 1990s, even making the front cover of National Geographic in February 1999. ...
... Biodiversity, defined as “the variety of life on earth, including all genes, species and ecosystems and the ecological processes of which they are part“ has continued to grow as and has become one of the key buzzwords of the 1990s, even making the front cover of National Geographic in February 1999. ...
Biodiversity Conservation and Sustainable Development
... ecosystems that support humanity, to the degree that we lose their diversity, the world becomes a less interesting place. Each species of bug is, as the great French anthropologists Claude Levistrauss wrote, an irreplaceable treasure, equal to the works of art which we religiously presence in musium ...
... ecosystems that support humanity, to the degree that we lose their diversity, the world becomes a less interesting place. Each species of bug is, as the great French anthropologists Claude Levistrauss wrote, an irreplaceable treasure, equal to the works of art which we religiously presence in musium ...
УДК 635
... environments, uses the large variety of new plants from different geographical areas. The analysis of specific variety of these cultures from the introduced in Ukraine testifies that for the landscape integrated collections are suitable over 400 kinds and big number of their cultivars. In this relat ...
... environments, uses the large variety of new plants from different geographical areas. The analysis of specific variety of these cultures from the introduced in Ukraine testifies that for the landscape integrated collections are suitable over 400 kinds and big number of their cultivars. In this relat ...
The beetle (Coleoptera) fauna of the Antipodes Islands
... islands compared with the Auckland, Campbell and Snares Islands. Warham and Johns (1975) summarised the history of scientific and entomological exploration of the Antipodes Islands. Apparently the first entomological collections were made by Prof F. W. Hutton during a visit in 1901. Further collecti ...
... islands compared with the Auckland, Campbell and Snares Islands. Warham and Johns (1975) summarised the history of scientific and entomological exploration of the Antipodes Islands. Apparently the first entomological collections were made by Prof F. W. Hutton during a visit in 1901. Further collecti ...
to the complete programme with abstracts
... topologies based both on molecules and on morphology. Even though works as James & Davidson (2012) or Domı́nguez et al. (2015) have outlined the potential of molecular phylogenies as the backbone of a reviewed earthworm taxonomy, it was not without their own pitfalls. The usual molecular markers (i. ...
... topologies based both on molecules and on morphology. Even though works as James & Davidson (2012) or Domı́nguez et al. (2015) have outlined the potential of molecular phylogenies as the backbone of a reviewed earthworm taxonomy, it was not without their own pitfalls. The usual molecular markers (i. ...
Here - illawarrareptilesociety.com.au
... that time, more skinks will have reached maturity and will hopefully start breeding as well. “These three orange-tailed skinks have gone above and beyond our expectations for them since they arrived at Durrell a year ago and started breeding in March," Matt Goetz, head of Durrell’s Herpetology Depar ...
... that time, more skinks will have reached maturity and will hopefully start breeding as well. “These three orange-tailed skinks have gone above and beyond our expectations for them since they arrived at Durrell a year ago and started breeding in March," Matt Goetz, head of Durrell’s Herpetology Depar ...
pop-ecology - WordPress.com
... of resources and their population sizes. 2. There are always limits to population growth in nature. 3. Changes in environmental conditions cause communities and ecosystems to gradually alter their species composition and population sizes (ecological succession). ...
... of resources and their population sizes. 2. There are always limits to population growth in nature. 3. Changes in environmental conditions cause communities and ecosystems to gradually alter their species composition and population sizes (ecological succession). ...
Montezuma Quail (Cyrtonyx montezumae)
... from mid November to February; daily bag limit for this species is 5 birds. Current knowledge of the effects of hunting on Montezuma Quail is minimal, largely because the species is so difficult to census (Stromberg 2000). In the winter months, quail may remain for weeks in areas as small as 6 ha; h ...
... from mid November to February; daily bag limit for this species is 5 birds. Current knowledge of the effects of hunting on Montezuma Quail is minimal, largely because the species is so difficult to census (Stromberg 2000). In the winter months, quail may remain for weeks in areas as small as 6 ha; h ...
D3.1 Annex 8b Section 6 Environmental impact pests
... on native biodiversity and ecosystem is debatable, in some cases native species clearly have an environmental impact, usually resulting either from climate change or ecological mismanagement (e.g. Dendroctonus ponderosae presently causing serious outbreaks and extending its range in Canada, various ...
... on native biodiversity and ecosystem is debatable, in some cases native species clearly have an environmental impact, usually resulting either from climate change or ecological mismanagement (e.g. Dendroctonus ponderosae presently causing serious outbreaks and extending its range in Canada, various ...
Patterns in Ecology
... gather from Jim Brown, for instance, that although he has had considerable grant support for his pathbreaking field manipulation experiments, he has never had significant grant support for any of his work on largescale ecological patterns. I know of other similar cases, and it is a disgrace. Field m ...
... gather from Jim Brown, for instance, that although he has had considerable grant support for his pathbreaking field manipulation experiments, he has never had significant grant support for any of his work on largescale ecological patterns. I know of other similar cases, and it is a disgrace. Field m ...
HELCOM Red List Clangula hyemalis
... temperate areas and are thus exposed to threats in both ecosystems. Although the reasons for the dramatic decline of the Baltic Sea winter population are not yet understood, various pressures were identified that have possibly caused or at least contributed to the observed declines. In the Arctic br ...
... temperate areas and are thus exposed to threats in both ecosystems. Although the reasons for the dramatic decline of the Baltic Sea winter population are not yet understood, various pressures were identified that have possibly caused or at least contributed to the observed declines. In the Arctic br ...
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.