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... Species Diversity • Species diversity is the variety of species in an ecosystem or throughout the biosphere • According to the U.S. Endangered Species Act – An endangered species is “in danger of becoming extinct throughout all or a significant portion of its range” – A threatened species is likely ...
... Species Diversity • Species diversity is the variety of species in an ecosystem or throughout the biosphere • According to the U.S. Endangered Species Act – An endangered species is “in danger of becoming extinct throughout all or a significant portion of its range” – A threatened species is likely ...
Biodiversity and Ecosystem Functioning Further
... the validity of the diversity-stability hypothesis and asserted that empirical evidence, not theory, should be the arbiter of ideas in ecology. However, the rigor of May’s theory outweighed the scant evidence then available. For the second printing of his book, May (1974) added an alternative resolu ...
... the validity of the diversity-stability hypothesis and asserted that empirical evidence, not theory, should be the arbiter of ideas in ecology. However, the rigor of May’s theory outweighed the scant evidence then available. For the second printing of his book, May (1974) added an alternative resolu ...
Vegetation succession in old fields at broad landscape scales
... Century-long observation studies, such as those using long-term permanent plots, are not the only method for studying succession. Another popular method is chronosequence study (= space-for-time substitution). In chronosequence studies, it is assumed that measurements on several sites which represen ...
... Century-long observation studies, such as those using long-term permanent plots, are not the only method for studying succession. Another popular method is chronosequence study (= space-for-time substitution). In chronosequence studies, it is assumed that measurements on several sites which represen ...
2007-2008 - Illinois Natural History Survey
... evolving responsibilities of the Survey as an academic institution. Educational and outreach themes, for example, continue to focus on ecosystem services and how they can best be elucidated and conserved within a human-dominated landscape. Yet there is a recognition that sustainable development will ...
... evolving responsibilities of the Survey as an academic institution. Educational and outreach themes, for example, continue to focus on ecosystem services and how they can best be elucidated and conserved within a human-dominated landscape. Yet there is a recognition that sustainable development will ...
Variable elements of metacommunity structure across an aquatic
... and Townsend 2006), and rather than operating exclusively, individual paradigms may play relatively stronger roles than others in shaping community assembly (Mouillot 2007). Understanding metacommunity patterns and processes is fundamental not only to enhance our basic ecological understanding but a ...
... and Townsend 2006), and rather than operating exclusively, individual paradigms may play relatively stronger roles than others in shaping community assembly (Mouillot 2007). Understanding metacommunity patterns and processes is fundamental not only to enhance our basic ecological understanding but a ...
High trophic overlap within the seabird community of Argentinean
... were collected from nestling and adult seabirds, as well as prey, during three consecutive breeding seasons in 28 breeding colonies. 2. Relative to those in other temperate and polar regions, this seabird community showed a high degree of overlap in trophic level (TL) among species (93% of species w ...
... were collected from nestling and adult seabirds, as well as prey, during three consecutive breeding seasons in 28 breeding colonies. 2. Relative to those in other temperate and polar regions, this seabird community showed a high degree of overlap in trophic level (TL) among species (93% of species w ...
Regional and local impact on species diversity – from pattern to
... these predictions in a quantitative synthesis of the literature available. For this meta-analysis, we will also revise the statistics used to distinguish between type I and type II communities. ...
... these predictions in a quantitative synthesis of the literature available. For this meta-analysis, we will also revise the statistics used to distinguish between type I and type II communities. ...
Climate Change and Fish Communities: A Conceptual Framework
... filters (Figure 1). Each filler may be identified with particular spatial and temporal scales (Table 1), although these scales (and therefore the filters themselves) form a continuum (Addicott et al. 1987). Large-scale phenomena generally act as "upstream" filters; only a portion of possible species ...
... filters (Figure 1). Each filler may be identified with particular spatial and temporal scales (Table 1), although these scales (and therefore the filters themselves) form a continuum (Addicott et al. 1987). Large-scale phenomena generally act as "upstream" filters; only a portion of possible species ...
Is the role of trophic control larger in a stressed ecosystem?
... that the identification of trophic components wisely corresponds to functional groups and that flow data were correctly collected. However, many systematic problems of data quality and simplification can become of secondary importance when we focus only on differences between similarly described web ...
... that the identification of trophic components wisely corresponds to functional groups and that flow data were correctly collected. However, many systematic problems of data quality and simplification can become of secondary importance when we focus only on differences between similarly described web ...
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... jaguars are dominant over pumas. Despite it is difficult to detect the intraguild predator phenomenon between solitary, forested and low-density species such as jaguars and pumas, there are records of jaguars killing pumas in areas of Brazil, Mexico and Argentina [27–30]. Thus coexisting at a region ...
... jaguars are dominant over pumas. Despite it is difficult to detect the intraguild predator phenomenon between solitary, forested and low-density species such as jaguars and pumas, there are records of jaguars killing pumas in areas of Brazil, Mexico and Argentina [27–30]. Thus coexisting at a region ...
Guns, Germs and Steel
... • For some reason, we don’t tend to analyze human relationships with other species this way. But domestication of other species, originally for agriculture, is most often mutualistic. Larry M. Frolich, Ph.D. Biology Department, Yavapai College ...
... • For some reason, we don’t tend to analyze human relationships with other species this way. But domestication of other species, originally for agriculture, is most often mutualistic. Larry M. Frolich, Ph.D. Biology Department, Yavapai College ...
EEA_ecosystem - Eionet Projects
... combining measurements of these 3 broad services (accessible resources). Estimation of ecosystem capital depreciation can be derived from physical degradation The integrated ecosystem capital framework Ecosystem Capital should not be valued as a stock; ecosystem services can be valued one by one but ...
... combining measurements of these 3 broad services (accessible resources). Estimation of ecosystem capital depreciation can be derived from physical degradation The integrated ecosystem capital framework Ecosystem Capital should not be valued as a stock; ecosystem services can be valued one by one but ...
Species, trophic, and functional diversity in marine
... “reserve effect,” the totality of the consequences of protecting marine systems. The reserve effect includes but is beyond the goal of protecting particular species or areas with economical or cultural value. However, most data on the effects of MPAs focus on target species and there is limited evid ...
... “reserve effect,” the totality of the consequences of protecting marine systems. The reserve effect includes but is beyond the goal of protecting particular species or areas with economical or cultural value. However, most data on the effects of MPAs focus on target species and there is limited evid ...
MACRO-INVERTEBRATE FUNCTIONAL GROUPS IN
... compared to lake ecosystems). Since the benthic environment functions as the major storage and recycling compartment for virtually all material that flows in the aquatic system, biological processes that take place there are interesting models for identification of the different invertebrate functio ...
... compared to lake ecosystems). Since the benthic environment functions as the major storage and recycling compartment for virtually all material that flows in the aquatic system, biological processes that take place there are interesting models for identification of the different invertebrate functio ...
Agents of Pattern Formation: Disturbance Regimes
... Rescaling natural disturbance regimes by making disturbances smaller (or larger), less frequent (or more), more or less intense by altering land use or by suppressing the natural processes that maintain diversity. For example: < biogeographic barriers created by humans (e.g., roads, canals, park bou ...
... Rescaling natural disturbance regimes by making disturbances smaller (or larger), less frequent (or more), more or less intense by altering land use or by suppressing the natural processes that maintain diversity. For example: < biogeographic barriers created by humans (e.g., roads, canals, park bou ...
how do different measures of functional diversity perform?
... separation in niche space allows coexistence through lack of competition for similar resources (e.g., MacArthur and Levins 1967). For example, species that exhibit a large diversity of above and below ground architectures should coexist, capture light, and forage resources more completely and effici ...
... separation in niche space allows coexistence through lack of competition for similar resources (e.g., MacArthur and Levins 1967). For example, species that exhibit a large diversity of above and below ground architectures should coexist, capture light, and forage resources more completely and effici ...
An ecological perspective on the deployment and design of low
... To understand and predict the effects of management interventions (e.g., coastal defences) on biodiversity, we must consider how ecological processes might be impacted not just locally (1–10 km) but also regionally (tens to hundreds of kilometers). For example, specific local effects of coastal defe ...
... To understand and predict the effects of management interventions (e.g., coastal defences) on biodiversity, we must consider how ecological processes might be impacted not just locally (1–10 km) but also regionally (tens to hundreds of kilometers). For example, specific local effects of coastal defe ...
A review of the indicators for ecosystem structure and functioning
... Yet some of the constraints may be redundant or even contradictory, and some important ecosystem properties (or societal goals) may not be protected or advanced by the indicator-based management framework. Another reason for the seeming proliferation of indicators is that they have been developed wi ...
... Yet some of the constraints may be redundant or even contradictory, and some important ecosystem properties (or societal goals) may not be protected or advanced by the indicator-based management framework. Another reason for the seeming proliferation of indicators is that they have been developed wi ...
Understanding Our Environment
... and hydrological cycles all depend on biodiversity. - Can a system function without all its integral parts ? ...
... and hydrological cycles all depend on biodiversity. - Can a system function without all its integral parts ? ...
Understanding Our Environment
... and hydrological cycles all depend on biodiversity. - Can a system function without all its integral parts ? ...
... and hydrological cycles all depend on biodiversity. - Can a system function without all its integral parts ? ...
Trophic Dynamics in Urban Communities By
... (Sullivan and Flowers 1998). Most of the anthropogenic changes in species composition have been indirect. Alterations have resulted mainly from historical changes in land use rather than intentional human manipulation or extirpation of species. Desert habitats were converted to agricultural and, mo ...
... (Sullivan and Flowers 1998). Most of the anthropogenic changes in species composition have been indirect. Alterations have resulted mainly from historical changes in land use rather than intentional human manipulation or extirpation of species. Desert habitats were converted to agricultural and, mo ...
The Editorial Committee of the Annual Review of Ecology, Evolution
... limitations also may apply to insect range shifts. In a study in the UK, habitat specialist butterflies ...
... limitations also may apply to insect range shifts. In a study in the UK, habitat specialist butterflies ...
Low biodiversity state persists two decades after cessation of
... et al. 2005). Therefore, further experimental evidence is needed to determine whether few or many terrestrial ecosystems have alternative stable states (Scheffer & Carpenter 2003; Schmitz 2004; Schr€ oder et al. 2005). One experimental approach to test for alternative stable states consists of deter ...
... et al. 2005). Therefore, further experimental evidence is needed to determine whether few or many terrestrial ecosystems have alternative stable states (Scheffer & Carpenter 2003; Schmitz 2004; Schr€ oder et al. 2005). One experimental approach to test for alternative stable states consists of deter ...
Restoration ecology
Restoration ecology emerged as a separate field in ecology in the 1980s. It is the scientific study supporting the practice of ecological restoration, which is the practice of renewing and restoring degraded, damaged, or destroyed ecosystems and habitats in the environment by active human intervention and action. The term ""restoration ecology"" is therefore commonly used for the academic study of the process, whereas the term ""ecological restoration"" is commonly used for the actual project or process by restoration practitioners.