thesis12.11 - Academic Commons
... displacing native species. Trees provide structure and habitat for forest ecosystems and so exotic tree invasions can have particularly dramatic effects on communities. The negative results of these invasions include alteration of successional dynamics reduced diversity and relative abundance of nat ...
... displacing native species. Trees provide structure and habitat for forest ecosystems and so exotic tree invasions can have particularly dramatic effects on communities. The negative results of these invasions include alteration of successional dynamics reduced diversity and relative abundance of nat ...
Economic and socio-cultural priorities for marine conservation
... A key issue is whether the impacts of fishing will undermine the potential of marine ecosystems to deliver these vitally important services. At a wider trophic level, there are a number of indirect impacts that have raised concerns that fishing may have important impacts on ecosystem structure and ...
... A key issue is whether the impacts of fishing will undermine the potential of marine ecosystems to deliver these vitally important services. At a wider trophic level, there are a number of indirect impacts that have raised concerns that fishing may have important impacts on ecosystem structure and ...
1 THEME: BIODIVERSITY 1.1 Introduction
... Alarmingly, the current observed rate of extinction of birds and mammals is about 1% per century, which is 100 – 1,000 times greater than the ‘natural’ background rate (Begon et al., 1996). To counteract this mass extinction, conservation action is needed that is effective in maintaining the ecosyst ...
... Alarmingly, the current observed rate of extinction of birds and mammals is about 1% per century, which is 100 – 1,000 times greater than the ‘natural’ background rate (Begon et al., 1996). To counteract this mass extinction, conservation action is needed that is effective in maintaining the ecosyst ...
Species functional redundancy, random extinctions and the stability
... distribution of species across functional groups is known. We therefore looked in the literature for empirical studies that classify all species from a community into functional groups based on their effect on the functioning of the ecosystem. Surprisingly, we were unable to find any empirical study ...
... distribution of species across functional groups is known. We therefore looked in the literature for empirical studies that classify all species from a community into functional groups based on their effect on the functioning of the ecosystem. Surprisingly, we were unable to find any empirical study ...
IOSR Journal Of Environmental Science, Toxicology And Food Technology (IOSR-JESTFT)
... chosen from each of the Agricultural zones of the state for the study, which was also based on prevailing sub – vegetation zones. Results indicate that huge financial involvement is required to implant laudable conservation strategies: over – exploitation of the species for medicinal purposes poor e ...
... chosen from each of the Agricultural zones of the state for the study, which was also based on prevailing sub – vegetation zones. Results indicate that huge financial involvement is required to implant laudable conservation strategies: over – exploitation of the species for medicinal purposes poor e ...
Middle Rio Grande Basin
... Management Practices The second area of research looks at what happens when we try to manage or “fix” various ecosystems. Many methods can be used, for example, to control fire risk, remove exotic plants, or restore some aspect of a complex ecosystem. Some work better than others. Some can have unin ...
... Management Practices The second area of research looks at what happens when we try to manage or “fix” various ecosystems. Many methods can be used, for example, to control fire risk, remove exotic plants, or restore some aspect of a complex ecosystem. Some work better than others. Some can have unin ...
A succession of theories: purging redundancy from disturbance theory
... body of work spans overlapping succession concepts presented by Clements in 1916, Egler in 1954, and Connell and Slatyer in 1977. Other theories describing community change include state and transition models, biological legacy theory, and the application of functional traits to predict responses to ...
... body of work spans overlapping succession concepts presented by Clements in 1916, Egler in 1954, and Connell and Slatyer in 1977. Other theories describing community change include state and transition models, biological legacy theory, and the application of functional traits to predict responses to ...
A Game-Theoretic Model for Punctuated Equilibrium
... though genetic effects are still ignored. With a suitable bookkeeping method, the two definitions of species are equivalent.) However, we will also often distinguish species by the rate with which mutations occur. The more frequent type of mutation can only change phenotypes (i.e. here only the indiv ...
... though genetic effects are still ignored. With a suitable bookkeeping method, the two definitions of species are equivalent.) However, we will also often distinguish species by the rate with which mutations occur. The more frequent type of mutation can only change phenotypes (i.e. here only the indiv ...
Environment Module 1_Ecological concepts
... Sum total of living, non-living components; influences and events, surrounding an organism. ...
... Sum total of living, non-living components; influences and events, surrounding an organism. ...
How Communities Evolve - New England Complex Systems Institute
... The continuous arrival of radiant energy from the sun, which is transformed into plant resources, keeps the system thermodynamically far from equilibrium, and the feedback relations between groups result in non-linear dynamics in the system. Both things together lead the trajectories to converge int ...
... The continuous arrival of radiant energy from the sun, which is transformed into plant resources, keeps the system thermodynamically far from equilibrium, and the feedback relations between groups result in non-linear dynamics in the system. Both things together lead the trajectories to converge int ...
Managing proteCted areas For BiologiCal diversitY and
... Box 21.2 Six consensus statements on the relationship between ecological structure (species) and function ...
... Box 21.2 Six consensus statements on the relationship between ecological structure (species) and function ...
Chapter 14: Interactions in Ecosystems
... The competitive exclusion principle involves species competing for resources in the same community. In different communities, ecological equivalents occur in very similar niches. In mathematics, numbers that are equal are called equivalents. Similarly, ecological equivalents are species that occupy ...
... The competitive exclusion principle involves species competing for resources in the same community. In different communities, ecological equivalents occur in very similar niches. In mathematics, numbers that are equal are called equivalents. Similarly, ecological equivalents are species that occupy ...
The role of environmental generalist species in ecosystem function
... We constructed a Lotka–Volterra-like competition model to study the role of environmental generalists in maintaining ecosystem function under a range of species richnesses and environmental conditions. Ecosystem function was quantified as community biomass, proportion of initial species that coexist ...
... We constructed a Lotka–Volterra-like competition model to study the role of environmental generalists in maintaining ecosystem function under a range of species richnesses and environmental conditions. Ecosystem function was quantified as community biomass, proportion of initial species that coexist ...
Animal species diversity driven by habitat heterogeneity
... species diversity are largely ignored. In particular, arthropods were considered in only 39% of all publications in our analysis. Thereof, 19% focused on arachnids, 19% on butterflies, 14% on beetles and 36% on other insects. It is most likely the unease of species counting that prevented hyperdiver ...
... species diversity are largely ignored. In particular, arthropods were considered in only 39% of all publications in our analysis. Thereof, 19% focused on arachnids, 19% on butterflies, 14% on beetles and 36% on other insects. It is most likely the unease of species counting that prevented hyperdiver ...
Phenotypic and phylogenetic evidence for the role of food and
... approaches to understanding evolutionary constraints on community assembly. In this study, we use traits, a phylogeny, and field surveys to identify the forces structuring communities of herbivorous marine amphipods and isopods living in adjacent seagrass and macroalgae. In addition, we compare our fi ...
... approaches to understanding evolutionary constraints on community assembly. In this study, we use traits, a phylogeny, and field surveys to identify the forces structuring communities of herbivorous marine amphipods and isopods living in adjacent seagrass and macroalgae. In addition, we compare our fi ...
The role of dispersal in shaping plant community Kathryn M. Flinn
... by local processes (Driscoll & Lindenmayer 2009). Better-dispersed species would also be expected to track environmental gradients more closely (Beisner et al. 2006; van de Meutter, de Meester & Stoks 2007; Vanschoenwinkel et al. 2007). Comparing different sets of species within the same communities ...
... by local processes (Driscoll & Lindenmayer 2009). Better-dispersed species would also be expected to track environmental gradients more closely (Beisner et al. 2006; van de Meutter, de Meester & Stoks 2007; Vanschoenwinkel et al. 2007). Comparing different sets of species within the same communities ...
as pdf - Heriot
... Biodiversity is fundamental to the provision of “ecosystem services”, and these are defined by the Food and Agriculture Organization (FAO) as The conditions and processes through which natural ecosystems, and the species that make them up, sustain and fulfil human life. Examples include provision of ...
... Biodiversity is fundamental to the provision of “ecosystem services”, and these are defined by the Food and Agriculture Organization (FAO) as The conditions and processes through which natural ecosystems, and the species that make them up, sustain and fulfil human life. Examples include provision of ...
A View of Life
... – Succession in a particular area will always lead to the same type of community. Climax Community Each stage facilitates invasion and replacement by organisms of the ...
... – Succession in a particular area will always lead to the same type of community. Climax Community Each stage facilitates invasion and replacement by organisms of the ...
Symbiotic Relationships - Yalonda`s Class Portfolio
... Learning Objective: Given websites that contain facts about symbiotic relationships students will interpret the material within the websites to answer the questions within the PowerPoint with 100 percent accuracy. Content Standard: GLE 0507.2.2 Explain how organisms interact through symbiotic, comme ...
... Learning Objective: Given websites that contain facts about symbiotic relationships students will interpret the material within the websites to answer the questions within the PowerPoint with 100 percent accuracy. Content Standard: GLE 0507.2.2 Explain how organisms interact through symbiotic, comme ...
Diversity effects on production in different light and fertility
... interactions, in which species benefit from the presence of interspecific neighbours, can also drive richnessproduction relationships, but these should be especially dependent upon certain stressful environmental circumstances that limit the importance of competition (Mulder et al. 2001; Cardinale e ...
... interactions, in which species benefit from the presence of interspecific neighbours, can also drive richnessproduction relationships, but these should be especially dependent upon certain stressful environmental circumstances that limit the importance of competition (Mulder et al. 2001; Cardinale e ...
Southern African Sustainable Use Specialist Group
... Contribution to environmental conservation: Ecosystem health (systems not degraded over nonrecovery thresholds, especially for trophic levels with long recovery times) Biodiversity (species not lost) ...
... Contribution to environmental conservation: Ecosystem health (systems not degraded over nonrecovery thresholds, especially for trophic levels with long recovery times) Biodiversity (species not lost) ...
ASSESSING RISKS TO BIODIVERSITY FROM FUTURE
... overlaying maps of currently protected areas, Gap Analysis determines the number of species currently not protected. The long-term conservation of biological diversity is dependent not only on establishment of protected areas however, but also on maintaining hospitable environments and viable popula ...
... overlaying maps of currently protected areas, Gap Analysis determines the number of species currently not protected. The long-term conservation of biological diversity is dependent not only on establishment of protected areas however, but also on maintaining hospitable environments and viable popula ...
Modeling Dynamics of Patchy Landscapes: Linking Metapopulation
... must be emphasized in studying dynamics and persistence of biological diversity. This also entails the integration of metapopulation theory, landscape ecology and conservation biology. Indeed, these three emerging fields are forming an exciting and fruitful trio in ecology. This integration requires ...
... must be emphasized in studying dynamics and persistence of biological diversity. This also entails the integration of metapopulation theory, landscape ecology and conservation biology. Indeed, these three emerging fields are forming an exciting and fruitful trio in ecology. This integration requires ...
A Cultural Niche Construction Theory of Initial
... TEK, and over their life spans members of small-scale societies will construct and refine high-resolution cognitive maps of the seasonal habitat preferences and spatial distribution of a wide variety of high-value target species of plants and animals. These maps of resource distribution are both abs ...
... TEK, and over their life spans members of small-scale societies will construct and refine high-resolution cognitive maps of the seasonal habitat preferences and spatial distribution of a wide variety of high-value target species of plants and animals. These maps of resource distribution are both abs ...
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.