Land Use, Biodiversity, and Ecosystem Integrity
... What about the dependence of taxonomic diversity on habitat diversity? Here, too, the ESA is explicit- the Act states that its goal is to protect not only organisms but also the ecosystems upon which they depend.' To opponents of the ESA, however, habitat protection triggers claims that the Act is t ...
... What about the dependence of taxonomic diversity on habitat diversity? Here, too, the ESA is explicit- the Act states that its goal is to protect not only organisms but also the ecosystems upon which they depend.' To opponents of the ESA, however, habitat protection triggers claims that the Act is t ...
Spatial patterns in European rabbit abundance after a population
... promising areas for planning reserves, and assessing habitat management strategies for species restoration. However, the reliability of habitat models may be challenged when other factors, such as demographics or history, have an additional impact on population abundance (e.g. Rushton et al. 1994; B ...
... promising areas for planning reserves, and assessing habitat management strategies for species restoration. However, the reliability of habitat models may be challenged when other factors, such as demographics or history, have an additional impact on population abundance (e.g. Rushton et al. 1994; B ...
Towards a trait-based quantification of species
... growth form and shoot height are plant functional response traits related to fire disturbance (Lavorel and Garnier 2002). Comparative approaches have established empirical relationships (i) between functional traits and performance currencies (e.g. Poorter and Bongers 2006; Wright and Westoby 2001; ...
... growth form and shoot height are plant functional response traits related to fire disturbance (Lavorel and Garnier 2002). Comparative approaches have established empirical relationships (i) between functional traits and performance currencies (e.g. Poorter and Bongers 2006; Wright and Westoby 2001; ...
Nile Tilapia Oreochromis niloticus
... country (notably in the Western Cape and KwaZulu-Natal), but these have not been successful. It is not clear therefore, if O. niloticus were introduced to other river systems in the country, whether it would be able to establish populations in these areas. However, given the fact that the optimal te ...
... country (notably in the Western Cape and KwaZulu-Natal), but these have not been successful. It is not clear therefore, if O. niloticus were introduced to other river systems in the country, whether it would be able to establish populations in these areas. However, given the fact that the optimal te ...
Competition, predation and species responses to environmental
... medium. We weighed each sample on an electronic scale to determine its exact volume, and counted the number of each protist in the sample under a Nikon SMZ-U dissecting microscope. We replaced 10% of the medium in each microcosm with fresh medium every week to replenish nutrients and prevent metabol ...
... medium. We weighed each sample on an electronic scale to determine its exact volume, and counted the number of each protist in the sample under a Nikon SMZ-U dissecting microscope. We replaced 10% of the medium in each microcosm with fresh medium every week to replenish nutrients and prevent metabol ...
Using home-range data to optimise the control of invasive animals
... spacing chosen that guarantees a high intersection rate for all habitats, seasons or age classes. The question remains, what type of home range estimate is best for use in our simulation? We have provided three examples here and there are many other methods of home-range estimation that may be consi ...
... spacing chosen that guarantees a high intersection rate for all habitats, seasons or age classes. The question remains, what type of home range estimate is best for use in our simulation? We have provided three examples here and there are many other methods of home-range estimation that may be consi ...
Habitat Loss and Fragmentation - Arkansas Forest Resources Center
... remains largely forested and although there is habitat loss, fragmentation is minimal. Second, smaller roads are constructed off the main road, increasing access to the forest. The newly accessed areas are subsequently cleared for agriculture (Figure 1b). The landscape begins to appear fragmented, e ...
... remains largely forested and although there is habitat loss, fragmentation is minimal. Second, smaller roads are constructed off the main road, increasing access to the forest. The newly accessed areas are subsequently cleared for agriculture (Figure 1b). The landscape begins to appear fragmented, e ...
Patterns of Plant Diversity in Georgia and Texas Salt Marshes
... the global to the regional pools. In this case, significance was assessed assuming a binomial distribution based on a mean (68.5%) probability of a species from the global pool entering the regional pool. We randomly generated 1,000,000 pairs of regional pools and assessed the probability of getting ...
... the global to the regional pools. In this case, significance was assessed assuming a binomial distribution based on a mean (68.5%) probability of a species from the global pool entering the regional pool. We randomly generated 1,000,000 pairs of regional pools and assessed the probability of getting ...
Notes and Comments
... declines. An advantage of this definition of temporal stability is flexibility; temporal stability of nonequilibrial systems can be quantified while using wholly nonlinear dynamics. Therefore, models need not possess equilibria, nor do field studies have to assume that a community is in a state of e ...
... declines. An advantage of this definition of temporal stability is flexibility; temporal stability of nonequilibrial systems can be quantified while using wholly nonlinear dynamics. Therefore, models need not possess equilibria, nor do field studies have to assume that a community is in a state of e ...
Species disc. Concept
... in case no other information were available. If they had more information than morphology, they adapted their species concepts accordingly. ...
... in case no other information were available. If they had more information than morphology, they adapted their species concepts accordingly. ...
Section 4: Population Samplings
... These killer bees are much more agressive than the natives, and destroy native honeybee populations. On a positive note, human-induced population explosions can provide needed resources for growing human populations. Agriculture now produces more food per acre, allowing and sustaining increased huma ...
... These killer bees are much more agressive than the natives, and destroy native honeybee populations. On a positive note, human-induced population explosions can provide needed resources for growing human populations. Agriculture now produces more food per acre, allowing and sustaining increased huma ...
Ecology Review Sheet
... 22. Identify the major terrestrial biomes shown in 50.19 and describe the properties and location of each. Make sure you can explain why they are found where they are found and the similar effect observed with increasing latitude and altitude. 23. Explain the term ecotone. 24. What is meant by the w ...
... 22. Identify the major terrestrial biomes shown in 50.19 and describe the properties and location of each. Make sure you can explain why they are found where they are found and the similar effect observed with increasing latitude and altitude. 23. Explain the term ecotone. 24. What is meant by the w ...
Dan Cogălniceanu • Biodiversity
... It is extremely hard to compete with the excellent books already published on the topic, but within the variety of terms, concepts and contradicting views a rearrangement might prove useful. I am myself a newcomer in the field of biodiversity, attracted by a small component of it, amphibians (i.e. fr ...
... It is extremely hard to compete with the excellent books already published on the topic, but within the variety of terms, concepts and contradicting views a rearrangement might prove useful. I am myself a newcomer in the field of biodiversity, attracted by a small component of it, amphibians (i.e. fr ...
A boreal invasion in response to climate change? Range shifts and
... 2009). These changes could be expected as a warmer climate should increase primary productivity in temperaturelimited ecosystems. This could constrain species adapted to present temperature and resource conditions, while it could allow species limited by those conditions to increase in abundance and ...
... 2009). These changes could be expected as a warmer climate should increase primary productivity in temperaturelimited ecosystems. This could constrain species adapted to present temperature and resource conditions, while it could allow species limited by those conditions to increase in abundance and ...
What is an Invasive Species?
... groups and for different parts of the world. Certain taxonomic groups, notably vascular plants and vertebrate animals, are relatively well described, and reasonable lists of species exist for many regions of the world (e.g. Randall, 2002). Such taxonomic resolution is essential for determining which ...
... groups and for different parts of the world. Certain taxonomic groups, notably vascular plants and vertebrate animals, are relatively well described, and reasonable lists of species exist for many regions of the world (e.g. Randall, 2002). Such taxonomic resolution is essential for determining which ...
Biodiversity Notes
... • Under the fourth main provision of the Endangered Species Act, the USFWS must prepare a species recovery plan for each listed species. • These plans often propose to protect or restore habitat for each species. • However, attempts to restrict human uses of land can be controversial. • Real-estate ...
... • Under the fourth main provision of the Endangered Species Act, the USFWS must prepare a species recovery plan for each listed species. • These plans often propose to protect or restore habitat for each species. • However, attempts to restrict human uses of land can be controversial. • Real-estate ...
pop-ecology - WordPress.com
... • Balance of nature and a climax community • Current view • Ever-changing mosaic of patches of vegetation • Mature late-successional ecosystems • State of continual disturbance and change ...
... • Balance of nature and a climax community • Current view • Ever-changing mosaic of patches of vegetation • Mature late-successional ecosystems • State of continual disturbance and change ...
Positive interactions expand habitat use and the realized niches of
... We hypothesize that Spartina alterniflora cordgrass, the foundation species (Dayton 1975) that builds and maintains New England salt marshes, increases the realized niches of marine fauna and flora by ameliorating limiting physical and biological stresses. We operationally define realized niche space a ...
... We hypothesize that Spartina alterniflora cordgrass, the foundation species (Dayton 1975) that builds and maintains New England salt marshes, increases the realized niches of marine fauna and flora by ameliorating limiting physical and biological stresses. We operationally define realized niche space a ...
SPECIES DIVERSITY
... quadrats. In either case, the more area sampled, the more species will be detected (e.g., Connor and McCoy 1979; Anderson and Marcus 1993). For insular communities, island area typically accounts for 50% of the variation in species number (Boecklen and Gotelli 1984). Even within a well-defined area, ...
... quadrats. In either case, the more area sampled, the more species will be detected (e.g., Connor and McCoy 1979; Anderson and Marcus 1993). For insular communities, island area typically accounts for 50% of the variation in species number (Boecklen and Gotelli 1984). Even within a well-defined area, ...
Food Habits of Four Armadillo Species in the Cerrado Area, Mato
... were found spread along trails in open areas, but feces of D. novemcinctus and C. unicinctus was not. Dasypus novemcinctus preferred closed areas (forests), which made it difficult to find its feces. Cabassous unicinctus has strong fossorial habits (Eisenberg and Redford 1999), and its feces is prob ...
... were found spread along trails in open areas, but feces of D. novemcinctus and C. unicinctus was not. Dasypus novemcinctus preferred closed areas (forests), which made it difficult to find its feces. Cabassous unicinctus has strong fossorial habits (Eisenberg and Redford 1999), and its feces is prob ...
Changes in woody plant composition of three vegetation types
... The effect of regular burning of woodland vegetation in Africa over an extended period (46 years) was studied in the Murchison Falls National Park, Uganda. Areas identified as having different vegetation types in 1958 were revisited to analyze vegetation changes and to test the prediction that conve ...
... The effect of regular burning of woodland vegetation in Africa over an extended period (46 years) was studied in the Murchison Falls National Park, Uganda. Areas identified as having different vegetation types in 1958 were revisited to analyze vegetation changes and to test the prediction that conve ...