i Community patterns of coral-associated decapods Nicholas Gotelli and Lawrence
... interspecific association. In this analysis, we compare species-area relationships for different locations (flat vs. flank following the terminology of Glynn, 1976) and seasons on the same reef. The effect of species' abundances on the species-area relationship is also assessed. This important facto ...
... interspecific association. In this analysis, we compare species-area relationships for different locations (flat vs. flank following the terminology of Glynn, 1976) and seasons on the same reef. The effect of species' abundances on the species-area relationship is also assessed. This important facto ...
Biodiversity and ecosystem functioning: It is time for dispersal
... In this case, the diversity of the available propagule pool constrained ecosystem productivity by determining the availability of key species, and by governing opportunities for functional compensation within the community. The experiments described above show that dispersal limitation at the landsc ...
... In this case, the diversity of the available propagule pool constrained ecosystem productivity by determining the availability of key species, and by governing opportunities for functional compensation within the community. The experiments described above show that dispersal limitation at the landsc ...
Vanellus gregarius, Sociable Lapwing
... (Johnsgard 1981, R. Sheldon in litt. 2007, 2008), but migration itself usually occurs in small groups of 1520 birds (Johnsgard 1981, del Hoyo et al. 1996). In Syria, it arrives yearly around mid-February to late March, and again in Autumn (Hofland and Keijl 2008). It arrives on its wintering grounds ...
... (Johnsgard 1981, R. Sheldon in litt. 2007, 2008), but migration itself usually occurs in small groups of 1520 birds (Johnsgard 1981, del Hoyo et al. 1996). In Syria, it arrives yearly around mid-February to late March, and again in Autumn (Hofland and Keijl 2008). It arrives on its wintering grounds ...
Tilman et al. Science 2001
... occurred with lower and higher cutoffs (including 50% higher) for aboveground and total biomass. In total, the dependence of biomass on species number and composition was not explained solely by sampling effects for a species pool containing some poorly performing species. We tested the sampling hyp ...
... occurred with lower and higher cutoffs (including 50% higher) for aboveground and total biomass. In total, the dependence of biomass on species number and composition was not explained solely by sampling effects for a species pool containing some poorly performing species. We tested the sampling hyp ...
Fifty years of change in northern upland forest understories: Identity
... of 54 prairie remnants in southern Wisconsin, Leach and Givnish (1996) documented large extinction rates (8–60%) over a 32–52-year period that were most pronounced at unburned sites and fell disproportionately on plants that were short, small-seeded, and nitrogen fixers. They interpreted these patte ...
... of 54 prairie remnants in southern Wisconsin, Leach and Givnish (1996) documented large extinction rates (8–60%) over a 32–52-year period that were most pronounced at unburned sites and fell disproportionately on plants that were short, small-seeded, and nitrogen fixers. They interpreted these patte ...
Decision Making for Food Choice by Grasshoppers
... slower and exhibits atypical reactions. Chorthippus binotatus can feed on Poaceae, but with more time spent, leading to an increasing predation risk. This situation is a limitation toward dispersal between different heathlands (patchy habitats). KEY WORDS decision making, patchy habitats, alkaloids, ...
... slower and exhibits atypical reactions. Chorthippus binotatus can feed on Poaceae, but with more time spent, leading to an increasing predation risk. This situation is a limitation toward dispersal between different heathlands (patchy habitats). KEY WORDS decision making, patchy habitats, alkaloids, ...
Systematic studies of the Syrphidae (Flower Flies)
... 6000 described species worldwide and almost 900 in North America. Their ecological roles are diverse and they can be important biologically and economically as pollinators and biological control agents. There is much literature on the family but few regional syntheses exist. In general, our knowledg ...
... 6000 described species worldwide and almost 900 in North America. Their ecological roles are diverse and they can be important biologically and economically as pollinators and biological control agents. There is much literature on the family but few regional syntheses exist. In general, our knowledg ...
Trade-offs associated with dietary specialization
... Specialization and generalization are a continuum of ecological versatility, and significant trade-offs are associated with these alternate strategies (MacNally 1995). Even if a specialist gains a greater benefit from resource specialization, they sacrifice some degree of resilience to changes in re ...
... Specialization and generalization are a continuum of ecological versatility, and significant trade-offs are associated with these alternate strategies (MacNally 1995). Even if a specialist gains a greater benefit from resource specialization, they sacrifice some degree of resilience to changes in re ...
Forests, Competition and Succession
... guilds based on protecting and stabilizing ecological commons such as shared mutualists (e.g., pollinators, mycorrhizal fungi) and soils. "Facilitation," in which one plant species has some effect that benefits others, is commonly observed during succession. It does not follow that a "facilitator" d ...
... guilds based on protecting and stabilizing ecological commons such as shared mutualists (e.g., pollinators, mycorrhizal fungi) and soils. "Facilitation," in which one plant species has some effect that benefits others, is commonly observed during succession. It does not follow that a "facilitator" d ...
The Nonconcept of Species Diversity: A Critique and Alternative
... species . . . [which may] play a substantial role in the justified by cursory reference to "uncertainty of enecosystem" (Sager and Hasler 1969) are as invalid counter" or by a dubious analogy between letters on as complaints that the weight of a tree is an inade- a printed page and individuals in a ...
... species . . . [which may] play a substantial role in the justified by cursory reference to "uncertainty of enecosystem" (Sager and Hasler 1969) are as invalid counter" or by a dubious analogy between letters on as complaints that the weight of a tree is an inade- a printed page and individuals in a ...
Effects of a nuclear power plant thermal discharge on habitat
... and Rajasuriya, 1998), little is known about the impact of thermal modification on tropical rocky shores. Changes in water temperature caused by power station thermal discharge affect fish assemblages by decreasing species richness (Rong-Quen et al., 2001). Furthermore, rocky shores have a variety of ...
... and Rajasuriya, 1998), little is known about the impact of thermal modification on tropical rocky shores. Changes in water temperature caused by power station thermal discharge affect fish assemblages by decreasing species richness (Rong-Quen et al., 2001). Furthermore, rocky shores have a variety of ...
The American Journal of Tropical Medicine and Hygiene | The
... example can live in and on the tissues of animals of numerous types. Others are not able to maintain themselves so well on a large variety of hosts. Plague is primarily a disease of rats; tularemia, a disease of rabbits; typhoid fever and cholera, of man. Other protozoa higher up in the scale as, fo ...
... example can live in and on the tissues of animals of numerous types. Others are not able to maintain themselves so well on a large variety of hosts. Plague is primarily a disease of rats; tularemia, a disease of rabbits; typhoid fever and cholera, of man. Other protozoa higher up in the scale as, fo ...
FWC species profile - Florida Wildlife Conservation Guide
... 2001). The fact that this pigeon requires two distinct habitats to produce young successfully exacerbates the threat of habitat loss and fragmentation. Destruction of tropical hardwood forest throughout the Florida Keys is likely the most serious and increasing threat to the U.S. population, as it r ...
... 2001). The fact that this pigeon requires two distinct habitats to produce young successfully exacerbates the threat of habitat loss and fragmentation. Destruction of tropical hardwood forest throughout the Florida Keys is likely the most serious and increasing threat to the U.S. population, as it r ...
Threatened Fauna - Corangamite Catchment Management Authority
... including Tasmania and extended through much of Victoria. It is now present in small isolated populations in the Melbourne area and south-west Victoria6. ...
... including Tasmania and extended through much of Victoria. It is now present in small isolated populations in the Melbourne area and south-west Victoria6. ...
Body size evolution in insular vertebrates: generality of the island rule
... of insular environments. In fact, Meiri et al.’s analyses of these data reveal different patterns of variation for the three different measures, and Meiri & Dayan’s (2003, p. 331) study of a related pattern (Bergmann’s rule) found that ‘studies using body mass in mammals show the greatest tendency t ...
... of insular environments. In fact, Meiri et al.’s analyses of these data reveal different patterns of variation for the three different measures, and Meiri & Dayan’s (2003, p. 331) study of a related pattern (Bergmann’s rule) found that ‘studies using body mass in mammals show the greatest tendency t ...
Speciation, and Conservation
... In the case of habitat islands, the degree to which one area is isolated depends on the dissimilarity of the matrix surrounding it. Isolation of more remote islands may also depend on the availability of islands closer to the source that can serve as “stepping stones.” Without doubt, it is possible ...
... In the case of habitat islands, the degree to which one area is isolated depends on the dissimilarity of the matrix surrounding it. Isolation of more remote islands may also depend on the availability of islands closer to the source that can serve as “stepping stones.” Without doubt, it is possible ...
Using assembly rules to measure the resilience of riparian
... impacts on environmental factors and thus on assembly rules of host communities. Further, the subantarctic forests of the Fuegian Archipelago are relatively simple, making it a manageable task to test the effects of invasion on recipient riparian vegetation communities. Beaver engineering activities ...
... impacts on environmental factors and thus on assembly rules of host communities. Further, the subantarctic forests of the Fuegian Archipelago are relatively simple, making it a manageable task to test the effects of invasion on recipient riparian vegetation communities. Beaver engineering activities ...
Aquarium Fishery Ecological Risk Assessment - Pro
... Risk assessment The risk analysis is based upon the AS/NZ Standard, but adapted for use within the fisheries context (Fletcher et al. 2002). It works by assigning a level of consequence (from negligible to catastrophic) and the likelihood of this consequence occurring (from remote to likely) for ea ...
... Risk assessment The risk analysis is based upon the AS/NZ Standard, but adapted for use within the fisheries context (Fletcher et al. 2002). It works by assigning a level of consequence (from negligible to catastrophic) and the likelihood of this consequence occurring (from remote to likely) for ea ...
Source - Wilmington College
... level, another species such as L. maackii may have larger impacts through higher in situ concentrations generated by higher leaf litter mass. Additionally, factors such as leaf decomposition, which can be rapid in L. maackii, should be considered (Blair and Stowasser 2009). Despite these weaknesses, ...
... level, another species such as L. maackii may have larger impacts through higher in situ concentrations generated by higher leaf litter mass. Additionally, factors such as leaf decomposition, which can be rapid in L. maackii, should be considered (Blair and Stowasser 2009). Despite these weaknesses, ...
The interacting effects of herbivore exclosures and seed addition in
... experimental plots. Numbers represent the no. of plots where plants were found in final harvest (max. no. is 6). No number means there were zero individuals of the listed species. Open are plots without exclosures, and Exl are plots with exclosures. * indicates the species naturally occurring on sit ...
... experimental plots. Numbers represent the no. of plots where plants were found in final harvest (max. no. is 6). No number means there were zero individuals of the listed species. Open are plots without exclosures, and Exl are plots with exclosures. * indicates the species naturally occurring on sit ...
Case studies in the conservation of biodiversity: degradation and
... the weed community of rain-fed fields was more rich (H!"2)16) than that of irrigated fields (H!"1)35). In general, the weed communities of both the irrigated and rain-fed cultivations were less diverse than the ‘natural’ communities. Only three species out of six could resist the high level of distu ...
... the weed community of rain-fed fields was more rich (H!"2)16) than that of irrigated fields (H!"1)35). In general, the weed communities of both the irrigated and rain-fed cultivations were less diverse than the ‘natural’ communities. Only three species out of six could resist the high level of distu ...
COMPETITION
... individuals have the same demands for resources. Resource Partitioning or “Ghost of Competititon Past” For example: today we measure the niche of two similar species that are sympatric and detect no measured differences: So is it past competition resulting in narrower niche OR physiological differen ...
... individuals have the same demands for resources. Resource Partitioning or “Ghost of Competititon Past” For example: today we measure the niche of two similar species that are sympatric and detect no measured differences: So is it past competition resulting in narrower niche OR physiological differen ...
Supplemental Information
... kirtlandii) have not fared as well in human-dominated landscapes as their firedependent habitat has disappeared with human suppression of wildfires (Probst, 1985). They can now only be found in several counties in the northern lower peninsula of Michigan, USA. Because cowbirds are nest parasites, th ...
... kirtlandii) have not fared as well in human-dominated landscapes as their firedependent habitat has disappeared with human suppression of wildfires (Probst, 1985). They can now only be found in several counties in the northern lower peninsula of Michigan, USA. Because cowbirds are nest parasites, th ...
Invasive Alien Species in Nova Scotia
... depend on these vital natural resources for our own wellbeing and prosperity; it's in our best interest to take note and to take action. This guidebook outlines some of the impacts and threats presented by these species, and stewardship actions that we can all take to help provide healthy and vibran ...
... depend on these vital natural resources for our own wellbeing and prosperity; it's in our best interest to take note and to take action. This guidebook outlines some of the impacts and threats presented by these species, and stewardship actions that we can all take to help provide healthy and vibran ...
4e - scientific protocol
... Aim of the study: collect information on bear and lynx presence in different areas, also in function of season, and obtain a genetic map of the population. Genetic characteristics of the brown bear population, through organic material collection (hair) at hair trap sites. Hair traps are made of a ba ...
... Aim of the study: collect information on bear and lynx presence in different areas, also in function of season, and obtain a genetic map of the population. Genetic characteristics of the brown bear population, through organic material collection (hair) at hair trap sites. Hair traps are made of a ba ...
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.