Coexistence in competition models with density dependent mortality
... where Cw may be viewed as accounting for mutual feeding interference among members of the competitors. It was demonstrated that two competitors not only coexist upon a single prey in the sense of uniform persistence, but also have a globally stable equilibrium. On the other hand, when lethal fightin ...
... where Cw may be viewed as accounting for mutual feeding interference among members of the competitors. It was demonstrated that two competitors not only coexist upon a single prey in the sense of uniform persistence, but also have a globally stable equilibrium. On the other hand, when lethal fightin ...
Competitive Response Hierarchies for Germination
... Abstract. Among plants, differences in competition intensity and in the ranking of competitive ability for traits such as germination, growth, and survival may suggest that the importance of competition for population success varies with the trait measured. If a species is a good competitor when mea ...
... Abstract. Among plants, differences in competition intensity and in the ranking of competitive ability for traits such as germination, growth, and survival may suggest that the importance of competition for population success varies with the trait measured. If a species is a good competitor when mea ...
Variation in Population Synchrony in a Multi
... species. To address the first question outlined in the aims (do ecologically similar tern species exhibit synchronous changes in demographic parameters over time and is this influenced by predator abundance), mean cross-correlation coefficients and associated bootstrapped confidence intervals were c ...
... species. To address the first question outlined in the aims (do ecologically similar tern species exhibit synchronous changes in demographic parameters over time and is this influenced by predator abundance), mean cross-correlation coefficients and associated bootstrapped confidence intervals were c ...
Interactions between Micro- and Macroparasites Predict
... In a first analysis of “all-helminth prevalence,” we extracted prevalence data for each host species in three ways: as a simple average of all estimates of prevalence in the database; as a weighted average of all estimates, with weights based on sample sizes from the individual studies; and averagin ...
... In a first analysis of “all-helminth prevalence,” we extracted prevalence data for each host species in three ways: as a simple average of all estimates of prevalence in the database; as a weighted average of all estimates, with weights based on sample sizes from the individual studies; and averagin ...
Toward an ecological synthesis: a case for habitat selection
... responsible for species coexistence, but provide one of the most convenient mechanisms for measuring competition, and the various community structures caused by competitive interactions. Other kinds of interactions, such as those between predators and prey, demonstrate that an understanding of the c ...
... responsible for species coexistence, but provide one of the most convenient mechanisms for measuring competition, and the various community structures caused by competitive interactions. Other kinds of interactions, such as those between predators and prey, demonstrate that an understanding of the c ...
Comparison of environmental and isolate Sulfobacillus genomes
... regions were extracted and trimmed with Sickle (available https://github.com/najoshi/sickle), allowing only paired-end reads with length >60 and quality scores >20. For the reference database, 186 sequences were downloaded from the SILVA SSU database representing the 174 sequences of ‘Family XVII In ...
... regions were extracted and trimmed with Sickle (available https://github.com/najoshi/sickle), allowing only paired-end reads with length >60 and quality scores >20. For the reference database, 186 sequences were downloaded from the SILVA SSU database representing the 174 sequences of ‘Family XVII In ...
TEMPORAL VARIATION IN FITNESS COMPONENTS AND
... weather or high population density (3, 7, 33, 50, 65, 76, 100, 157, 171, 177). High forage quality and quantity often increase preweaning survival of large herbivores (131, 152, 197), possibly by improving milk quality (197). Malnutrition appears to be a major cause of early mortality during some ye ...
... weather or high population density (3, 7, 33, 50, 65, 76, 100, 157, 171, 177). High forage quality and quantity often increase preweaning survival of large herbivores (131, 152, 197), possibly by improving milk quality (197). Malnutrition appears to be a major cause of early mortality during some ye ...
Comments
... Understanding the environmental context In addition to the potential problem of exchanging chemical cues between experimental units, the exchange of chemicals and resources between enclosures and the external aquatic environment could homogenize environmental conditions among enclosures within ponds ...
... Understanding the environmental context In addition to the potential problem of exchanging chemical cues between experimental units, the exchange of chemicals and resources between enclosures and the external aquatic environment could homogenize environmental conditions among enclosures within ponds ...
The Genotypic View of Social Interactions in Microbial Communities
... coming from recent clonal growth or horizontal gene transfer (HGT). In contrast, because cooperation is only expected to evolve between different genotypes under restrictive ecological conditions, different genotypes will typically compete. Competition between two genotypes includes mutual harm but, ...
... coming from recent clonal growth or horizontal gene transfer (HGT). In contrast, because cooperation is only expected to evolve between different genotypes under restrictive ecological conditions, different genotypes will typically compete. Competition between two genotypes includes mutual harm but, ...
Summary - University of Amsterdam
... polymorphism, combined with evidence for relatively old fossil record, suggest that introgressive hybridization is likely to have played a role in the evolution of Madracis. The study suggests that Madracis morphospecies remain recognizable either because hybridization is non-pervasive or because di ...
... polymorphism, combined with evidence for relatively old fossil record, suggest that introgressive hybridization is likely to have played a role in the evolution of Madracis. The study suggests that Madracis morphospecies remain recognizable either because hybridization is non-pervasive or because di ...
Effects of body size and resource availability on
... experiment I determined that while both species’ per capita effect on resource levels is virtually identical, Batillaria achieves a marked advantage over Cerithidea through its superior resource conversion efficiency (Byers, in press). For a given level of resource Batillaria adds on average 20–30% ...
... experiment I determined that while both species’ per capita effect on resource levels is virtually identical, Batillaria achieves a marked advantage over Cerithidea through its superior resource conversion efficiency (Byers, in press). For a given level of resource Batillaria adds on average 20–30% ...
Lepidopteran Communities in Two Forest Ecosystems During the
... summer in 1993Ð1995 in eight forest stands. Four stands were classiÞed as ecological landtype phase (ELTP) 20, and they were dominated by oaks (Quercus spp.), a favored host of gypsy moth, Lymantria dispar (L.). The other four stands were classiÞed as ELTP 45, and they were dominated by northern har ...
... summer in 1993Ð1995 in eight forest stands. Four stands were classiÞed as ecological landtype phase (ELTP) 20, and they were dominated by oaks (Quercus spp.), a favored host of gypsy moth, Lymantria dispar (L.). The other four stands were classiÞed as ELTP 45, and they were dominated by northern har ...
Codon usage in the Mycobacterium tuberculosis corn
... although its genomic G C content is rather lower than in these other species (about 65 mol%, compared to about 75 mol YO). Second, M. tuberculosis multiplies almost exclusively in macrophages, with a doubling time of about 24 h : if codon selection were mediated by the need for efficient use of ribo ...
... although its genomic G C content is rather lower than in these other species (about 65 mol%, compared to about 75 mol YO). Second, M. tuberculosis multiplies almost exclusively in macrophages, with a doubling time of about 24 h : if codon selection were mediated by the need for efficient use of ribo ...
Towards a mechanistic understanding of fish species niche
... environmental niche divergence between congeners is often driven by the divergence of only one or several functional traits (Lai et al. 2005, Broennimann et al. 2007). As such, congeneric pairs may provide useful and relatively simple study systems for identifying the key functional traits and perfo ...
... environmental niche divergence between congeners is often driven by the divergence of only one or several functional traits (Lai et al. 2005, Broennimann et al. 2007). As such, congeneric pairs may provide useful and relatively simple study systems for identifying the key functional traits and perfo ...
Ecological Mechanisms Underlying Arthropod Species Further
... Understanding patterns of arthropod species diversity worldwide is a grand challenge. A hierarchical approach is required to determine how ecological processes filter regional species pools, resulting from historical and biogeographic processes, to shape local species composition and diversity (41, 9 ...
... Understanding patterns of arthropod species diversity worldwide is a grand challenge. A hierarchical approach is required to determine how ecological processes filter regional species pools, resulting from historical and biogeographic processes, to shape local species composition and diversity (41, 9 ...
Power Point Presentation - Hale AP Biology
... Human Disturbance and Biogeographic factors • Humans have the greatest impact on biological communities worldwide • Human disturbance to communities usually reduces species diversity • Humans also prevent some naturally occurring disturbances, which can be important to community structure • Latitud ...
... Human Disturbance and Biogeographic factors • Humans have the greatest impact on biological communities worldwide • Human disturbance to communities usually reduces species diversity • Humans also prevent some naturally occurring disturbances, which can be important to community structure • Latitud ...
AP Biology A: Ch 1, 52, 53 Test
... and developing countries (data as of 2005). What is a logical conclusion that can be drawn from the graphs above? Developed countries have ____. A) lower infant mortality rates and lower life expectancy than developing countries B) higher infant mortality rates and lower life expectancy than develop ...
... and developing countries (data as of 2005). What is a logical conclusion that can be drawn from the graphs above? Developed countries have ____. A) lower infant mortality rates and lower life expectancy than developing countries B) higher infant mortality rates and lower life expectancy than develop ...
عرض تقديمي من PowerPoint
... elongate forms. • The larger pore spaces of sands and gravels contain fewer nutrients and therefore support sparser populations. • Foraminifera from these coarser substrates may be thickershelled, heavily ornamented and of biconvex or fusiform ...
... elongate forms. • The larger pore spaces of sands and gravels contain fewer nutrients and therefore support sparser populations. • Foraminifera from these coarser substrates may be thickershelled, heavily ornamented and of biconvex or fusiform ...
Predicting the Long-Term Effects of Hunting on Plant Species
... more generally. This paper is a first attempt at providing a quantitative framework for evaluating these effects. I focus on the effects of changes in abundances of seed dispersers and predators because these species have direct effects on plant recruitment and seedling communities and have been the ...
... more generally. This paper is a first attempt at providing a quantitative framework for evaluating these effects. I focus on the effects of changes in abundances of seed dispersers and predators because these species have direct effects on plant recruitment and seedling communities and have been the ...
Precipitation and aridity index regulating spatial patterns of
... analyze the relationship among environment factors, as shown in Table 1. As a result, annual mean ...
... analyze the relationship among environment factors, as shown in Table 1. As a result, annual mean ...
Human-Induced Trophic Cascades along the Fecal Detritus Pathway
... Copyright: ß 2013 Nichols et al. This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited. Funding: Financial support for ...
... Copyright: ß 2013 Nichols et al. This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited. Funding: Financial support for ...
Conservation and Subsistence in Small
... To be sure, many indigenous peoples have deep roots in particular locales, and virtually all have strong attachments to homelands. But this does not necessarily mean that they have continuously occupied a single spot on the planet and made it home for hundreds of generations. A case in point is prov ...
... To be sure, many indigenous peoples have deep roots in particular locales, and virtually all have strong attachments to homelands. But this does not necessarily mean that they have continuously occupied a single spot on the planet and made it home for hundreds of generations. A case in point is prov ...
mutualisms and facilitation
... One notable characteristic of the literature on facilitation is that the definition of the concept itself has been remarkably fluid. Unlike the extensive literature on the definition of mutualism, which began barely a decade after the term was first coined (Bronstein 2001a), this inconsistency has recei ...
... One notable characteristic of the literature on facilitation is that the definition of the concept itself has been remarkably fluid. Unlike the extensive literature on the definition of mutualism, which began barely a decade after the term was first coined (Bronstein 2001a), this inconsistency has recei ...