two degrees of separation in complex food webs
... Feeding relationships can cause invasions, extirpations, and population fluctuations of a species to dramatically affect other species within a variety of natural habitats.1-11 Such strong effects rarely propagate through food webs more than three links away from the initial perturbation.1-4 However ...
... Feeding relationships can cause invasions, extirpations, and population fluctuations of a species to dramatically affect other species within a variety of natural habitats.1-11 Such strong effects rarely propagate through food webs more than three links away from the initial perturbation.1-4 However ...
Protecting Eastern Freshwater Cod
... the 1980s, when the species was protected. Although once prolific, remnant (non-stocked) populations are now only found in parts of the Clarence River and its tributaries. No remnant populations are known to remain in the Richmond River system, however, stocked populations persist in some local trib ...
... the 1980s, when the species was protected. Although once prolific, remnant (non-stocked) populations are now only found in parts of the Clarence River and its tributaries. No remnant populations are known to remain in the Richmond River system, however, stocked populations persist in some local trib ...
Dealing with uncertainty and risk: Use of multipliers and discount rates
... offset. Uncertainty associated with a lack of obtainable data or knowledge can be addressed through adequate investment in field work and research. In contrast, uncertainty in the ecological system itself, uncertainty in offset implementation, and time delays associated with offset delivery are most ...
... offset. Uncertainty associated with a lack of obtainable data or knowledge can be addressed through adequate investment in field work and research. In contrast, uncertainty in the ecological system itself, uncertainty in offset implementation, and time delays associated with offset delivery are most ...
Caretta caretta (North West Indian Ocean
... To apply criterion A, three generations (or a minimum of ten years, whichever is longer) of abundance data are required (IUCN 2014). In the case of the Loggerhead, we conservatively estimate its generation time as 45 years (see the Habitats and Ecology section below). For criteria A1-A2, data from t ...
... To apply criterion A, three generations (or a minimum of ten years, whichever is longer) of abundance data are required (IUCN 2014). In the case of the Loggerhead, we conservatively estimate its generation time as 45 years (see the Habitats and Ecology section below). For criteria A1-A2, data from t ...
b10vrv2042
... The sea anemone’s sting has two functions: to capture prey and to protect the anemone from predators. Even so, certain fish manage to snack on anemone tentacles. The clownfish, however, is immune to anemone stings. When threatened by a predator, clownfish seek shelter by snuggling deep ...
... The sea anemone’s sting has two functions: to capture prey and to protect the anemone from predators. Even so, certain fish manage to snack on anemone tentacles. The clownfish, however, is immune to anemone stings. When threatened by a predator, clownfish seek shelter by snuggling deep ...
Succession Among the Ocean Tides
... Recovery of ecosystems occurs naturally through a process called ecological succession. This natural recovery can occur if the damage is not too great. Sometimes, the rate of recovery is long in comparison to human desires. Natural areas are subject to disturbances of many kinds. These disturbances ...
... Recovery of ecosystems occurs naturally through a process called ecological succession. This natural recovery can occur if the damage is not too great. Sometimes, the rate of recovery is long in comparison to human desires. Natural areas are subject to disturbances of many kinds. These disturbances ...
Niches and Community Interactions
... The sea anemone’s sting has two functions: to capture prey and to protect the anemone from predators. Even so, certain fish manage to snack on anemone tentacles. The clownfish, however, is immune to anemone stings. When threatened by a predator, clownfish seek shelter by snuggling deep ...
... The sea anemone’s sting has two functions: to capture prey and to protect the anemone from predators. Even so, certain fish manage to snack on anemone tentacles. The clownfish, however, is immune to anemone stings. When threatened by a predator, clownfish seek shelter by snuggling deep ...
A0831_R0743_CER_Fauna Survey
... This report outlines the results of a vertebrate fauna survey of a property known as 'Egerton' which is situated in the Shire of Swan. The aims of the present study were to.: determine the vertebrate fauna present onthe property, determine the distribution of the vertebrate fauna across the major ha ...
... This report outlines the results of a vertebrate fauna survey of a property known as 'Egerton' which is situated in the Shire of Swan. The aims of the present study were to.: determine the vertebrate fauna present onthe property, determine the distribution of the vertebrate fauna across the major ha ...
Coupled Logistic Map for Symbiotic Relations
... A logistic map which describes the population dynamics of a species would be the most famous nonlinear difference equation. The map would have dual significance as an instructive example of the nonlinear dynamics and as an ecological model [1]. In spite of its simple form, it could show us the essen ...
... A logistic map which describes the population dynamics of a species would be the most famous nonlinear difference equation. The map would have dual significance as an instructive example of the nonlinear dynamics and as an ecological model [1]. In spite of its simple form, it could show us the essen ...
Wolverine - Saskatchewan Conservation Data Centre
... Vast tracts of land are necessary for wolverines to maintain viable populations because of their large home ranges. Wolverine habitat is better defined in terms of food supply than particular types of vegetation or topography (COSEWIC 2003). Wolverines can inhabit a variety of treed and treeless are ...
... Vast tracts of land are necessary for wolverines to maintain viable populations because of their large home ranges. Wolverine habitat is better defined in terms of food supply than particular types of vegetation or topography (COSEWIC 2003). Wolverines can inhabit a variety of treed and treeless are ...
Ch.14-Lesson-2-WSs-f..
... 1. Possible answer: Plant populations might compete for space and light. Other populations eat the plants. 2. Possible answer: Insects might eat the plants or other populations of insects. They are eaten by fish, ducks, turtles, and other populations. 3. Possible answer: Different populations of fis ...
... 1. Possible answer: Plant populations might compete for space and light. Other populations eat the plants. 2. Possible answer: Insects might eat the plants or other populations of insects. They are eaten by fish, ducks, turtles, and other populations. 3. Possible answer: Different populations of fis ...
The structure of N eotropical mammal communities: an appraisal of
... Huxley College of Environmental Studies, Western Washington University, Bellingham, WA 98225, USA; Stovall Museum and Department of Zoology, University of Oklahoma, Norman, OK 73019, USA ...
... Huxley College of Environmental Studies, Western Washington University, Bellingham, WA 98225, USA; Stovall Museum and Department of Zoology, University of Oklahoma, Norman, OK 73019, USA ...
Patterns of Behavior
... WD = dense woodland, WS = scattered woodland, WT = woodland thicket, FM = forest mature, FE =forest edge, FG = forest canopy gap (Johnson et al. 1997). ...
... WD = dense woodland, WS = scattered woodland, WT = woodland thicket, FM = forest mature, FE =forest edge, FG = forest canopy gap (Johnson et al. 1997). ...
Key Elements of Biodiversity in British Columbia
... This work was commissioned as a background status report for the development of a Biodiversity Action Plan for the province of British Columbia. Attempting to directly manage for and maintain all aspects of biodiversity is both conceptually and logistically difficult, and many approaches to simplify ...
... This work was commissioned as a background status report for the development of a Biodiversity Action Plan for the province of British Columbia. Attempting to directly manage for and maintain all aspects of biodiversity is both conceptually and logistically difficult, and many approaches to simplify ...
English - Convention on Biological Diversity
... level as climate change and the Kobe 3R Action Plan. Last month, here in Japan, the G8 ministers of the environment adopted the Kobe Call for Action on Biodiversity, which reaffirms the support to the three objectives of the Convention on Biological Diversity and encourage implementation of the ten ...
... level as climate change and the Kobe 3R Action Plan. Last month, here in Japan, the G8 ministers of the environment adopted the Kobe Call for Action on Biodiversity, which reaffirms the support to the three objectives of the Convention on Biological Diversity and encourage implementation of the ten ...
Why are there so many species in the tropics?
... higher rates of speciation than extinction generate high diversity of species and clades within the tropics; (3) most species and clades of tropical origin remain confined to low latitudes, because abiotic environmental constraints inhibit colonization and range expansion out of the tropics; (4) a m ...
... higher rates of speciation than extinction generate high diversity of species and clades within the tropics; (3) most species and clades of tropical origin remain confined to low latitudes, because abiotic environmental constraints inhibit colonization and range expansion out of the tropics; (4) a m ...
... actually consumed. International trade may also affect HANPP because imported goods are often produced using different efficiencies than those in the consuming country (Table 1). Our high and low estimates set upper and lower boundaries for this latter uncertainty, but our analyses do not explicitly ...
shorebird management and conservation report
... Potential developments are likely to create a further range of impacts. The proposed developments discussed in this report include new residential developments at Buckland Park and Dry Creek, new industrial precincts at Outer Harbor and Gillman, new road and rail infrastructure, altered recreational ...
... Potential developments are likely to create a further range of impacts. The proposed developments discussed in this report include new residential developments at Buckland Park and Dry Creek, new industrial precincts at Outer Harbor and Gillman, new road and rail infrastructure, altered recreational ...
Biological and ecological traits of marine species
... are readily classified by their geography, for example what region, country or locality they occur in, and within that, by environment (e.g., freshwater, terrestrial, marine, soils or sediments). Ecological classification is more complex, and may refer to their habitat, a concept combining the phys ...
... are readily classified by their geography, for example what region, country or locality they occur in, and within that, by environment (e.g., freshwater, terrestrial, marine, soils or sediments). Ecological classification is more complex, and may refer to their habitat, a concept combining the phys ...
Summer 2015 packet
... AP BIOLOGY 6. How does dispersal influence the distribution of individuals within a population? ...
... AP BIOLOGY 6. How does dispersal influence the distribution of individuals within a population? ...
ECOlogical use of native PLANTs for environmental
... ECOPLANTMED is one of the 95 projects (out of ~2000 proposals) funded under the ENPI CBC Mediterranean Sea Basin Programme, a multilateral cross-border cooperation initiative financed by ENPI which involves 14 countries (Cyprus, Egypt, France, Jordan, Greece, Israel, Italy, Lebanon, Malta, Palestine ...
... ECOPLANTMED is one of the 95 projects (out of ~2000 proposals) funded under the ENPI CBC Mediterranean Sea Basin Programme, a multilateral cross-border cooperation initiative financed by ENPI which involves 14 countries (Cyprus, Egypt, France, Jordan, Greece, Israel, Italy, Lebanon, Malta, Palestine ...
Life history patterns of six sympatric species of Leptophlebiidae
... Few of the species showed monthly size frequency distributions which could be interpreted visually, so size cohorts were identified by probability paper analysis (Cassie 1954). For each species several cohorts often overlapped in any one month. In these situations the break between cohorts was appro ...
... Few of the species showed monthly size frequency distributions which could be interpreted visually, so size cohorts were identified by probability paper analysis (Cassie 1954). For each species several cohorts often overlapped in any one month. In these situations the break between cohorts was appro ...
oceanic islands: models of diversity
... humans. Human-mediated impacts on islands cannot be held back; however, the islands present a relatively simple system in which it is possible to understand the dynamics of species formation and loss. ...
... humans. Human-mediated impacts on islands cannot be held back; however, the islands present a relatively simple system in which it is possible to understand the dynamics of species formation and loss. ...
measuring habitat quality: a review
... species listed as threatened and endangered in lands managed by the United States. ‘‘All species’’ includes data from Hawaii, Puerto Rico, American Samoa, and other islands; ‘‘mainland species’’ excludes those from islands. A species can have more than one cause of endangerment. Note that habitat al ...
... species listed as threatened and endangered in lands managed by the United States. ‘‘All species’’ includes data from Hawaii, Puerto Rico, American Samoa, and other islands; ‘‘mainland species’’ excludes those from islands. A species can have more than one cause of endangerment. Note that habitat al ...
A role for assisted evolution in designing native plant materials for
... restoration of modified environments where domesticated nature is the most viable remaining option? Vast landscapes in the North American Intermountain West, for example, are increasingly being modified by plant invasions, degradation of soil and hydrological processes, and loss of biodiversity. Und ...
... restoration of modified environments where domesticated nature is the most viable remaining option? Vast landscapes in the North American Intermountain West, for example, are increasingly being modified by plant invasions, degradation of soil and hydrological processes, and loss of biodiversity. Und ...
Habitat conservation
Habitat conservation is a land management practice that seeks to conserve, protect and restore habitat areas for wild plants and animals, especially conservation reliant species, and prevent their extinction, fragmentation or reduction in range. It is a priority of many groups that cannot be easily characterized in terms of any one ideology.