6-3 Biodiversity
... Many forms of pollution can threaten biodiversity. One of the most serious problems occurs when toxic compounds accumulate in the tissues of ...
... Many forms of pollution can threaten biodiversity. One of the most serious problems occurs when toxic compounds accumulate in the tissues of ...
Population structure and species dynamics of Spisula
... clam dredge fishery takes place (Gaspar and Monteiro, 1999; Gaspar et al., 1999; Chı́charo et al., 2002a,b; Palma et al., 2003). The dredges are designed to dig clams out of the sediment, disturbing the seabed both in terms of physical structure and biological communities (Gaspar et al., 2003). Besi ...
... clam dredge fishery takes place (Gaspar and Monteiro, 1999; Gaspar et al., 1999; Chı́charo et al., 2002a,b; Palma et al., 2003). The dredges are designed to dig clams out of the sediment, disturbing the seabed both in terms of physical structure and biological communities (Gaspar et al., 2003). Besi ...
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 ...
Niche-Based vs. Neutral Models of Ecological Communities
... 1993; Sloep 1993; Mikkelson 1997). However, as we shall see, he and other neutralists cannot really have their cake (trade-offs) and eat it too – that is, treat the organisms of different species as ecological equivalents, each having an equal probability of survival and reproduction. Chase and Leib ...
... 1993; Sloep 1993; Mikkelson 1997). However, as we shall see, he and other neutralists cannot really have their cake (trade-offs) and eat it too – that is, treat the organisms of different species as ecological equivalents, each having an equal probability of survival and reproduction. Chase and Leib ...
PPT: Population Ecology
... from exponential and logistic growth – Instead temporarily overshoots K because of reproductive time lag (the period needed for birth rate to fall and death rate to rise in response to resource ...
... from exponential and logistic growth – Instead temporarily overshoots K because of reproductive time lag (the period needed for birth rate to fall and death rate to rise in response to resource ...
1 Breeding Phenology of an Amphibian Community in a Mediterranean Area
... a large time overlap during the larval phase was observed among species. Three showed (A. obstetricans, P. punctatus and R. perezi) over-wintering tadpoles. Here we discuss temporal segregation, the differences in the breeding strategies among species, and variable conditions among years as factors ...
... a large time overlap during the larval phase was observed among species. Three showed (A. obstetricans, P. punctatus and R. perezi) over-wintering tadpoles. Here we discuss temporal segregation, the differences in the breeding strategies among species, and variable conditions among years as factors ...
Population dynamics of shrews on small islands
... Kuitunen, 1986). In a data set for 17 island populations ofS. araneus, island area and isolation explained only little or none of the variation in simple linear models of divergence, but a multiple regression model employing both area and isolation as independent variables explained 6 1yoof the vari ...
... Kuitunen, 1986). In a data set for 17 island populations ofS. araneus, island area and isolation explained only little or none of the variation in simple linear models of divergence, but a multiple regression model employing both area and isolation as independent variables explained 6 1yoof the vari ...
Molluscs
... Increase public awareness and recognition of the role that native shellfish play in maintaining marine ecosystems. Stormwater should be appropriately managed to attenuate and intercept runoff and pollution that may impact marine receiving waters and estuarine environments. Maintain septic fields and ...
... Increase public awareness and recognition of the role that native shellfish play in maintaining marine ecosystems. Stormwater should be appropriately managed to attenuate and intercept runoff and pollution that may impact marine receiving waters and estuarine environments. Maintain septic fields and ...
ECOLOGICAL RELATIONSIDPS BETWEEN SMALL MAMMALS AND CENTRAL ITALY
... moist soils, while Q. pubescens is widespread especially on dry and poor soils. Both these oak species are usually subjected to a rotation of about 1 0- 1 2 years, and occasionally of about 1 5- 1 8 years. Coppice forests are inhabited by a rich variety of animais . This animal variety is thus stron ...
... moist soils, while Q. pubescens is widespread especially on dry and poor soils. Both these oak species are usually subjected to a rotation of about 1 0- 1 2 years, and occasionally of about 1 5- 1 8 years. Coppice forests are inhabited by a rich variety of animais . This animal variety is thus stron ...
The elephant in the room: the role of failed invasions
... From the 76 reported species with invasive and noninvasive populations (Table 1), we found five distinct factors suggested as reasons for invasion failures: propagule pressure, abiotic resistance, biotic resistance, genetic constraints and mutualist release (Fig. 1). We found taxonomic and geographi ...
... From the 76 reported species with invasive and noninvasive populations (Table 1), we found five distinct factors suggested as reasons for invasion failures: propagule pressure, abiotic resistance, biotic resistance, genetic constraints and mutualist release (Fig. 1). We found taxonomic and geographi ...
Evolutionary Rate in the Protein Interaction Network
... served similarity in fitness effects of interacting proteins was sufficient to explain the similarity in their rates of evolution. Path analysis based on the causal model shown in Fig. 3C indicated that the correlation between the fitness effects of interacting proteins contributes only slightly to ...
... served similarity in fitness effects of interacting proteins was sufficient to explain the similarity in their rates of evolution. Path analysis based on the causal model shown in Fig. 3C indicated that the correlation between the fitness effects of interacting proteins contributes only slightly to ...
Rewilding: Pitfalls and Opportunities for Moths and Butterflies
... rewilding from their perspective. As an umbrella group for other terrestrial invertebrates, we focus on the diverse group of Lepidoptera. More specifically, we set out to explore their response to farmland abandonment. So far, studies have warned against farmland abandonment, which is for instance l ...
... rewilding from their perspective. As an umbrella group for other terrestrial invertebrates, we focus on the diverse group of Lepidoptera. More specifically, we set out to explore their response to farmland abandonment. So far, studies have warned against farmland abandonment, which is for instance l ...
Managing for Threatened, Endangered, and Sensitive Species
... under the focal conservation targets and should be protected through the management of the broader focal conservation targets. This approach also benefits state listed or common species; thus it enhances biodiversity. For example, at aafb, Eggert’s sunflower was classified as a threatened species pr ...
... under the focal conservation targets and should be protected through the management of the broader focal conservation targets. This approach also benefits state listed or common species; thus it enhances biodiversity. For example, at aafb, Eggert’s sunflower was classified as a threatened species pr ...
Evaluating Multispecies Landscape Connectivity in a Threatened
... being less efficient for any given species than a corridor intended specifically for that species. There have been few tests of the trade-offs between single- and multispecies corridor approaches. We assessed single-species and multispecies habitat corridors for 5 threatened mammal species in tropic ...
... being less efficient for any given species than a corridor intended specifically for that species. There have been few tests of the trade-offs between single- and multispecies corridor approaches. We assessed single-species and multispecies habitat corridors for 5 threatened mammal species in tropic ...
Land Use, Biodiversity, and Ecosystem Integrity
... different phyla differ from one another vastly more than do different species in, for instance, the same family. At these higher levels, marine life is far more diverse, containing twothirds of all the world's phyla and classes. There is also diversity at a finer taxonomic level than that of species ...
... different phyla differ from one another vastly more than do different species in, for instance, the same family. At these higher levels, marine life is far more diverse, containing twothirds of all the world's phyla and classes. There is also diversity at a finer taxonomic level than that of species ...
Conservation and control strategies for the wolf (Canis lupus) in
... to the maximum number of packs that a zone can support and to slight changes in stage specific survival probabilities. In a zoned population, viability is enhanced more by decreasing mortality rates in all classes than by increasing wolf zone size. An alternative to zoning is adaptive management, wh ...
... to the maximum number of packs that a zone can support and to slight changes in stage specific survival probabilities. In a zoned population, viability is enhanced more by decreasing mortality rates in all classes than by increasing wolf zone size. An alternative to zoning is adaptive management, wh ...
Doncaster et al 2000 paper - Department of Zoology, University of
... Why sex prevails in nature remains one of the great puzzles of evolution1,2. Sexual reproduction has an immediate cost relative to asexual reproduction, as males only express their contribution to population growth through females. With no males to sustain, an asexual mutant can double its relative ...
... Why sex prevails in nature remains one of the great puzzles of evolution1,2. Sexual reproduction has an immediate cost relative to asexual reproduction, as males only express their contribution to population growth through females. With no males to sustain, an asexual mutant can double its relative ...
1 Optimal Public Control of Exotic Species: Preventing the Brown
... Brown tree snakes (Boiga irregularis) were accidentally introduced to Guam in the 1940s, via shipping from their native Australia. They cause an average of one power outage every four days. If O’ahu faced similar conditions, the expense of power outages would be significant. A conservative estimate ...
... Brown tree snakes (Boiga irregularis) were accidentally introduced to Guam in the 1940s, via shipping from their native Australia. They cause an average of one power outage every four days. If O’ahu faced similar conditions, the expense of power outages would be significant. A conservative estimate ...
as a PDF
... differences in invasion sequence. Similarly, the 20 communities assembled where single species invaded at inoculation densities near their equilibrium values (scenario C) did not achieve complete invasion resistance after either 500 (Figure 4) or 10,000 time steps. Colonization success ranged from 4 ...
... differences in invasion sequence. Similarly, the 20 communities assembled where single species invaded at inoculation densities near their equilibrium values (scenario C) did not achieve complete invasion resistance after either 500 (Figure 4) or 10,000 time steps. Colonization success ranged from 4 ...
BLAST Tutorial:
... alignments of the highest scoring sequences in the first iteration of the PSIBLAST search passing a threshold. Therefore highly conserved positions get a higher score than just by the amino acid exchange matrix. PSI-BLAST (position specific iterative BLAST) can be used, when one looks for far member ...
... alignments of the highest scoring sequences in the first iteration of the PSIBLAST search passing a threshold. Therefore highly conserved positions get a higher score than just by the amino acid exchange matrix. PSI-BLAST (position specific iterative BLAST) can be used, when one looks for far member ...
Gummy Bear Genetics
... species, to increase their population size and ultimately reintroduce them to the wild. Another benefit of the program was that while in captivity, these Gummy bears were also safe from consumption by the Homo sapiens. The breeding program began with a purebred male and female bear of each of the fo ...
... species, to increase their population size and ultimately reintroduce them to the wild. Another benefit of the program was that while in captivity, these Gummy bears were also safe from consumption by the Homo sapiens. The breeding program began with a purebred male and female bear of each of the fo ...