I-HEDGE: determining the optimum complementary sets of taxa for
... Rankings based on these metrics alone do not necessarily constitute rational prioritizations for conservation. One issue is that a secure species on a long branch may have a high HED score, because its own low probability of extinction [p(ext)] does not contribute to its own score. Also, as laid out ...
... Rankings based on these metrics alone do not necessarily constitute rational prioritizations for conservation. One issue is that a secure species on a long branch may have a high HED score, because its own low probability of extinction [p(ext)] does not contribute to its own score. Also, as laid out ...
Insect conservation in an urban biodiversity hotspot: The San
... gone extinct. Hafernik and Reinhard (1995) reconstructed the butterfly fauna of San Francisco County using data from museum specimens, the literature, and unpublished records of sightings. Of the 46 species that they list as native to San Francisco, only 26 have been sighted within the last 15 years ...
... gone extinct. Hafernik and Reinhard (1995) reconstructed the butterfly fauna of San Francisco County using data from museum specimens, the literature, and unpublished records of sightings. Of the 46 species that they list as native to San Francisco, only 26 have been sighted within the last 15 years ...
Freshwater Fish Richness
... population, or group of populations, that is substantially reproductively isolated and represents an important component in the evolutionary legacy of the species. Populations/ESUs of only a few species in Ontario identified, none comprehensively. ...
... population, or group of populations, that is substantially reproductively isolated and represents an important component in the evolutionary legacy of the species. Populations/ESUs of only a few species in Ontario identified, none comprehensively. ...
Janzen et al 7aug09 ms MASTER
... additional caterpillar and pupa colors and patterns (and the many forms of crypsis) that the animals present in “standard” lateral or dorsal views (e.g., see these views of the same immatures as in Figs. 1-6 in SI Appendix 2). This innate and vision-based mimicry is deeply pervasive and extensive. T ...
... additional caterpillar and pupa colors and patterns (and the many forms of crypsis) that the animals present in “standard” lateral or dorsal views (e.g., see these views of the same immatures as in Figs. 1-6 in SI Appendix 2). This innate and vision-based mimicry is deeply pervasive and extensive. T ...
galapagos research
... seeds from Lantana camara were found (from five gizzards), all in the Transition Zone. In contrast, seeds from Rubus niveus were numerous (1064 seeds from 11 gizzards) and primarily found in the Humid Zone, with the exception of eight seeds in one gizzard from the Transition Zone. The seeds of Solan ...
... seeds from Lantana camara were found (from five gizzards), all in the Transition Zone. In contrast, seeds from Rubus niveus were numerous (1064 seeds from 11 gizzards) and primarily found in the Humid Zone, with the exception of eight seeds in one gizzard from the Transition Zone. The seeds of Solan ...
PDF
... to other threats to biodiversity, invasive introduced species rank second only to habitat destruction. Keeping potentially damaging invaders out is the most cost-effective way to deal with introduced species. Targeting common pathways by which invaders reach our shores can slow or stop their entry. ...
... to other threats to biodiversity, invasive introduced species rank second only to habitat destruction. Keeping potentially damaging invaders out is the most cost-effective way to deal with introduced species. Targeting common pathways by which invaders reach our shores can slow or stop their entry. ...
Predation of Frankliniella occidentalis by Orius insidiosus on plant
... Summary: Annual cycles of population abundance of thrips and natural enemies were determined in three agricultural areas in the Aconcagua valley in Central Chile. The most important plant species serving as hosts for reproducing populations of Frankliniella occidentalis are not native to Chile. Loca ...
... Summary: Annual cycles of population abundance of thrips and natural enemies were determined in three agricultural areas in the Aconcagua valley in Central Chile. The most important plant species serving as hosts for reproducing populations of Frankliniella occidentalis are not native to Chile. Loca ...
(Snail-eating Flatworm) Impacts Information
... The global decline of nonmarine mollusks may be facilitated by the spread and introduction of predatory flatworms (Platyhelminthes: Turbellaria), in particular the flatworm Platydemus manokwari. P. manokwari has been introduced into many locations for use as a biological control agent for the giant ...
... The global decline of nonmarine mollusks may be facilitated by the spread and introduction of predatory flatworms (Platyhelminthes: Turbellaria), in particular the flatworm Platydemus manokwari. P. manokwari has been introduced into many locations for use as a biological control agent for the giant ...
exotic plants in the cibodas botanic gardens remnant forest
... Due to potential impact of invasive alien (exotic) species to the natural ecosystems, inventory of exotic species in the Cibodas Botanic Gardens (CBG) remnant forest area is an urgent need for CBG. Inventory of exotic species can assist gardens manager to set priorities and plan better responses for ...
... Due to potential impact of invasive alien (exotic) species to the natural ecosystems, inventory of exotic species in the Cibodas Botanic Gardens (CBG) remnant forest area is an urgent need for CBG. Inventory of exotic species can assist gardens manager to set priorities and plan better responses for ...
CHAPTER 9 POPULATION ECOLOGY Objectives
... 4. Cyclic fluctuations occur over a regular time period, generally a multiple year cycle. 5. Irregular behavior is poorly understood. Some scientists attribute irregular behavior to chaos in the system; others disagree. I. Interactions between predators and their prey change in cycles and appear to ...
... 4. Cyclic fluctuations occur over a regular time period, generally a multiple year cycle. 5. Irregular behavior is poorly understood. Some scientists attribute irregular behavior to chaos in the system; others disagree. I. Interactions between predators and their prey change in cycles and appear to ...
POPULATION DENSITY AND DISTRIBUTION OF THE NEW
... Summary: The distribution of the indigenous New Zealand megascolecid earthworm Octochaetus multiporus (Beddard) in hill pastures of different fertilities in the southern North Island of New Zealand, and the population density throughout a year are described. Octochaetus multiporus was most numerous ...
... Summary: The distribution of the indigenous New Zealand megascolecid earthworm Octochaetus multiporus (Beddard) in hill pastures of different fertilities in the southern North Island of New Zealand, and the population density throughout a year are described. Octochaetus multiporus was most numerous ...
Chapter 04 - Biodiversity and Evolution_
... • Populations evolve when genes mutate and give some individuals genetic traits that enhance their abilities to survive and to produce offspring with these traits • natural selection ...
... • Populations evolve when genes mutate and give some individuals genetic traits that enhance their abilities to survive and to produce offspring with these traits • natural selection ...
Mr G Davidson
... Biodiversity Biodiversity is the range of species which exists within an ecosystem. A stable ecosystem: Contains a wide variety of species. Can exist for a very long time. Is not affected by small changes. ...
... Biodiversity Biodiversity is the range of species which exists within an ecosystem. A stable ecosystem: Contains a wide variety of species. Can exist for a very long time. Is not affected by small changes. ...
Cuon alpinus, Dhole
... ecologically or fully extinct across extensive parts of the region. Only a few of the largest wildernesses support nearly intact species assemblages and even in these, the larger species (Bos spp., Cervus spp., hog deer Axis porcinus) are very rare. This situation will likely hinder any possibility ...
... ecologically or fully extinct across extensive parts of the region. Only a few of the largest wildernesses support nearly intact species assemblages and even in these, the larger species (Bos spp., Cervus spp., hog deer Axis porcinus) are very rare. This situation will likely hinder any possibility ...
The Role of Landscape Connectivity in Assembling Exotic Plant
... distances and found that, in general, each test demonstrated maximum explanatory power with a connection distance of 50 m. Similarly, published data suggest that forest patches within 50 m of each other may be considered connected for plants (Geertsema 2005, Soons et al. 2005). Therefore, we created ...
... distances and found that, in general, each test demonstrated maximum explanatory power with a connection distance of 50 m. Similarly, published data suggest that forest patches within 50 m of each other may be considered connected for plants (Geertsema 2005, Soons et al. 2005). Therefore, we created ...
Introductory Research Essay
... Generally competition has been defined as having three criteria. 1. Species share overlapping resource requirements. 2. Those resources are limiting. 3. The interacting species affect eachother adversely. As Putnam (1996) notes, a competitive interaction may be present if we observe a clear shift in ...
... Generally competition has been defined as having three criteria. 1. Species share overlapping resource requirements. 2. Those resources are limiting. 3. The interacting species affect eachother adversely. As Putnam (1996) notes, a competitive interaction may be present if we observe a clear shift in ...
Forest Restoration Ecology - College of Tropical Agriculture and
... • Biodiversity – 2nd most important cause of loss of biodiversity – In the U.S., >1/2 of the species listed as threatened or endangered are at risk due to competition with or predation by nonnative species ...
... • Biodiversity – 2nd most important cause of loss of biodiversity – In the U.S., >1/2 of the species listed as threatened or endangered are at risk due to competition with or predation by nonnative species ...
separating effects of habitat and geographical position
... There are principally two necessary conditions for species occurrence at any place: suitable habitat and means of getting there. The spatial distribution of any species is thus affected by the spatial distribution of appropriate habitat patches, as well as by a large-scale spatial context that can a ...
... There are principally two necessary conditions for species occurrence at any place: suitable habitat and means of getting there. The spatial distribution of any species is thus affected by the spatial distribution of appropriate habitat patches, as well as by a large-scale spatial context that can a ...
Developing New Morphological, Geographic, and
... years. Appalachian State University Biology Department offered tools and expertise, the North Carolina Department of Transportation provided funding and field assistance, and the North Carolina Natural Heritage Program delivered the data sets used for field work and biogeographical analysis. ...
... years. Appalachian State University Biology Department offered tools and expertise, the North Carolina Department of Transportation provided funding and field assistance, and the North Carolina Natural Heritage Program delivered the data sets used for field work and biogeographical analysis. ...
Spatial distributions of tree species in a subtropical forest of China
... used methods to quantify stem-mapped tree distributions. These include using Ripley’s K function (Ripley 1977) and the pair correlation g function (Stoyan and Stoyan 1994, Stoyan and Penttinen 2000). K and g functions are related. The former is a cumulative distribution function of distances between ...
... used methods to quantify stem-mapped tree distributions. These include using Ripley’s K function (Ripley 1977) and the pair correlation g function (Stoyan and Stoyan 1994, Stoyan and Penttinen 2000). K and g functions are related. The former is a cumulative distribution function of distances between ...
Invasive species and habitat degradation in Iberian streams:
... co-occurring process to biodiversity loss driven by habitat degradation. It is difficult to discern between the two potential causes given that few invaded ecosystems are free from habitat degradation, and that both factors may interact in different ways. Here we analyze the relative importance of ha ...
... co-occurring process to biodiversity loss driven by habitat degradation. It is difficult to discern between the two potential causes given that few invaded ecosystems are free from habitat degradation, and that both factors may interact in different ways. Here we analyze the relative importance of ha ...
Spatial distributions of tree species in a subtropical forest of China
... used methods to quantify stem-mapped tree distributions. These include using Ripley’s K function (Ripley 1977) and the pair correlation g function (Stoyan and Stoyan 1994, Stoyan and Penttinen 2000). K and g functions are related. The former is a cumulative distribution function of distances between ...
... used methods to quantify stem-mapped tree distributions. These include using Ripley’s K function (Ripley 1977) and the pair correlation g function (Stoyan and Stoyan 1994, Stoyan and Penttinen 2000). K and g functions are related. The former is a cumulative distribution function of distances between ...
Apex Predators of Costa Rica - Point Loma Nazarene University
... The wolves of Yellowstone present a case study which can be referenced as an example of the removal of a predator from an ecosystem. In the early 1900s the government decided to eradicate wolves from Yellowstone National Park and by 1926 all wolves had been removed (Haines 1996). With the removal of ...
... The wolves of Yellowstone present a case study which can be referenced as an example of the removal of a predator from an ecosystem. In the early 1900s the government decided to eradicate wolves from Yellowstone National Park and by 1926 all wolves had been removed (Haines 1996). With the removal of ...
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.