The architecture of mutualistic networks minimizes competition and
... equations for plants. In the next section we analyze the fixed points and dynamical stability of the model, leaving for section 3 the interesting problem of how the effective competition limits the structural stability of the model, and correspondingly its maximum biodiversity. Section 4 is a summary ...
... equations for plants. In the next section we analyze the fixed points and dynamical stability of the model, leaving for section 3 the interesting problem of how the effective competition limits the structural stability of the model, and correspondingly its maximum biodiversity. Section 4 is a summary ...
Fundamental and realized niches of two chrysomelid
... niche; he showed that Galerucella calmariensis and Galerucella pusilla have identical competitive abilities and frequently encounter interspecific competition for food on same habitat but none of them is superior. Interspecific competition is one of the important ecological factors that can structur ...
... niche; he showed that Galerucella calmariensis and Galerucella pusilla have identical competitive abilities and frequently encounter interspecific competition for food on same habitat but none of them is superior. Interspecific competition is one of the important ecological factors that can structur ...
Ecological impacts of invasive species: community and ecosystem
... From D’Antonio et al. (2000) Series of 14 study sites (#’s) from eastern coastal lowlands to seasonal submontane zone on Big Island, Hawaii Lowlands: warm tropical zone with 1500-2000 mm yr-1, but dry summers; elevation from sea level to 400 m Submontane: several °C cooler, but similar amount and se ...
... From D’Antonio et al. (2000) Series of 14 study sites (#’s) from eastern coastal lowlands to seasonal submontane zone on Big Island, Hawaii Lowlands: warm tropical zone with 1500-2000 mm yr-1, but dry summers; elevation from sea level to 400 m Submontane: several °C cooler, but similar amount and se ...
Workshop on Predation
... migrate to an area where there are others of your species. 5. (Lynx) Recall the data on the relationship between lynx and hare populations as analyzed by MacLulich. What is your relationship to the trappers? (Consider all possibilities!) The trappers are both your predators (when they trap you) and ...
... migrate to an area where there are others of your species. 5. (Lynx) Recall the data on the relationship between lynx and hare populations as analyzed by MacLulich. What is your relationship to the trappers? (Consider all possibilities!) The trappers are both your predators (when they trap you) and ...
3 - Heartland Community College
... - Extremely good at what they do, but vulnerable to change • Generalists = species with broad niches that can use a wide array of habitats and resources - Able to live in many different places Copyright © 2008 Pearson Education, Inc., publishing as Benjamin Cummings ...
... - Extremely good at what they do, but vulnerable to change • Generalists = species with broad niches that can use a wide array of habitats and resources - Able to live in many different places Copyright © 2008 Pearson Education, Inc., publishing as Benjamin Cummings ...
Ecological communities in variable environments : dynamics
... In multi-species communities, each species has its specific response to environmental stochasticity. Species-specific environmental responses can be either independent (IR), uniformly correlated (CR), or hierarchically correlated (HR) between species. IR refers to a situation where each species resp ...
... In multi-species communities, each species has its specific response to environmental stochasticity. Species-specific environmental responses can be either independent (IR), uniformly correlated (CR), or hierarchically correlated (HR) between species. IR refers to a situation where each species resp ...
as a PDF
... species consisted of the mean dry-matter production of eight individuals of a species if it was a mixture quadrat and of 16 individuals of a species if it was a monoculture quadrat, to ensure a standardized comparison of performance in mixture vs. monoculture. All data analyses were performed using ...
... species consisted of the mean dry-matter production of eight individuals of a species if it was a mixture quadrat and of 16 individuals of a species if it was a monoculture quadrat, to ensure a standardized comparison of performance in mixture vs. monoculture. All data analyses were performed using ...
PDF
... human-altered habitats. Thus, the spatial coexistence between these two potentially competing species remains an interesting question to solve. The general result is that they share space (at regional and local scale) without any apparent avoidance. Nevertheless, some authors have proposed that a fi ...
... human-altered habitats. Thus, the spatial coexistence between these two potentially competing species remains an interesting question to solve. The general result is that they share space (at regional and local scale) without any apparent avoidance. Nevertheless, some authors have proposed that a fi ...
A mini review on theories and measures of interspecific associations
... Different form animals, plants usually disseminate their seeds through gravity, wind, and some animals as insects in order to reproduce themselves. Therefore their interspecific associations are distinct from animals. Researchers always detect the whole interspecific associations of all species with ...
... Different form animals, plants usually disseminate their seeds through gravity, wind, and some animals as insects in order to reproduce themselves. Therefore their interspecific associations are distinct from animals. Researchers always detect the whole interspecific associations of all species with ...
Temporal stability in forest productivity increases with tree diversity
... whether diversity has also an effect on the variability in productivity across all possible species compositions with a given species richness (McGrady-Steed et al. 1997). In other words, is the productivity of a community more predictable when richness increases? If so, biodiversity would ‘insure’ ...
... whether diversity has also an effect on the variability in productivity across all possible species compositions with a given species richness (McGrady-Steed et al. 1997). In other words, is the productivity of a community more predictable when richness increases? If so, biodiversity would ‘insure’ ...
Reprint (1.8MB PDF) - Litchman-Klausmeier Lab
... they may closely track the temporally varying optimum, preempting any newly opened niches. For example, Abrams (2006) showed that rapid evolution destroyed the coexistence of ecologically distinct specialist and generalist species in a variable environment. We explore both of these phenomena in this ...
... they may closely track the temporally varying optimum, preempting any newly opened niches. For example, Abrams (2006) showed that rapid evolution destroyed the coexistence of ecologically distinct specialist and generalist species in a variable environment. We explore both of these phenomena in this ...
The lonely wolves of the microscopic world Rare microbes have a
... Top predators such as wolves are rare in numbers, but have an important impact on whole ecosystems. In the world of microscopic organisms, rare species can have disproportionate effects as well. This is the conclusion of a team of researchers who have reviewed studies that investigate the role of lo ...
... Top predators such as wolves are rare in numbers, but have an important impact on whole ecosystems. In the world of microscopic organisms, rare species can have disproportionate effects as well. This is the conclusion of a team of researchers who have reviewed studies that investigate the role of lo ...
Research advances in theories and methods of community
... interspecific differences cannot explain species differences in environmental response and invasion capacity. 2.2.3 Incorporation of niche theory and neutral theory Assembly and construction is probably the outcome of joined action of random ecological drift and niche differentiation. So niche theor ...
... interspecific differences cannot explain species differences in environmental response and invasion capacity. 2.2.3 Incorporation of niche theory and neutral theory Assembly and construction is probably the outcome of joined action of random ecological drift and niche differentiation. So niche theor ...
Answers - Hodder Plus Home
... 27 Primary productivity is the gain in energy/biomass by producers and involves the conversion of solar energy into stored chemical energy; secondary productivity is the gain in energy/biomass by consumers and involves feeding and absorption. 28 NPP is the gain by producers in energy or biomass per ...
... 27 Primary productivity is the gain in energy/biomass by producers and involves the conversion of solar energy into stored chemical energy; secondary productivity is the gain in energy/biomass by consumers and involves feeding and absorption. 28 NPP is the gain by producers in energy or biomass per ...
review - Jordi Bascompte
... he goal of ecological research on species coexistence is to explain how the tremendous diversity of species that we see in nature persists despite differences between species in competitive ability1,2. However, empirically evaluating the interactions between a large set of competitors is logisticall ...
... he goal of ecological research on species coexistence is to explain how the tremendous diversity of species that we see in nature persists despite differences between species in competitive ability1,2. However, empirically evaluating the interactions between a large set of competitors is logisticall ...
- WIT Repository
... functional response depends on the expression of individual interspecific interactions and ...
... functional response depends on the expression of individual interspecific interactions and ...
Limits to evolution at range margins: when and why does adaptation
... In the Kirkpatrick and Barton model [18], genetic variance is assumed to be constant across the entire range. In reality, however, the amount of segregating variance evolves under the joint effects of migration, mutation and selection. Importantly, migration among populations with different trait me ...
... In the Kirkpatrick and Barton model [18], genetic variance is assumed to be constant across the entire range. In reality, however, the amount of segregating variance evolves under the joint effects of migration, mutation and selection. Importantly, migration among populations with different trait me ...
Population Ecology
... estimate the life span of organisms To do this they often create a life table, age summary of a population A cohort (group of individuals of the same age) are studied to see what percentage of the population ...
... estimate the life span of organisms To do this they often create a life table, age summary of a population A cohort (group of individuals of the same age) are studied to see what percentage of the population ...
How geographic distance and depth drive ecological variability and
... conservation measures. The geographic structure of populations generally results from spatial distribution patterns that are related to historic or current barriers between local communities, such as geographic distance, environmental patchiness and environmental gradients that tend to keep populati ...
... conservation measures. The geographic structure of populations generally results from spatial distribution patterns that are related to historic or current barriers between local communities, such as geographic distance, environmental patchiness and environmental gradients that tend to keep populati ...
Rapid Evolutionary Change and the Coexistence of Species
... making coexistence more likely. In this framework a species’ mean fitness refers to the component of its population growth rate that is independent of its density and the density of competing species (see the sidebar on Ecological Versus Evolutionary Fitness for a further discussion of ecological fitn ...
... making coexistence more likely. In this framework a species’ mean fitness refers to the component of its population growth rate that is independent of its density and the density of competing species (see the sidebar on Ecological Versus Evolutionary Fitness for a further discussion of ecological fitn ...
Decoys in Predation and Parasitism
... some attempts to use them and bacteriophages for pathogen control (Westergaard and Kramer 1977; Smith and Huggins 1983; Jackson and Whiting 1992; Fratamico and Whiting 1995; Sarkar et al. 1996). Like bacteriophages, bacteria of the genus Bdellovibrio penetrate the outer envelope of their prey, take ...
... some attempts to use them and bacteriophages for pathogen control (Westergaard and Kramer 1977; Smith and Huggins 1983; Jackson and Whiting 1992; Fratamico and Whiting 1995; Sarkar et al. 1996). Like bacteriophages, bacteria of the genus Bdellovibrio penetrate the outer envelope of their prey, take ...