Traits underpinning desiccation resistance explain distribution
... authors’ expert knowledge of the local environmental conditions. We are aware that this is only an approximate categorization of water availability. However, we believe that the classification of the sites into three levels of water availability should provide sufficient resolution to test whether t ...
... authors’ expert knowledge of the local environmental conditions. We are aware that this is only an approximate categorization of water availability. However, we believe that the classification of the sites into three levels of water availability should provide sufficient resolution to test whether t ...
FOOD WEBS
... nature; small, controlled perturbations are difficult to achieve in field experiments and hard to recognize in time series of fluctuating populations. A more indirect approach is to take empirical community matrices and compare their properties with randomized matrices that are not subject to any dy ...
... nature; small, controlled perturbations are difficult to achieve in field experiments and hard to recognize in time series of fluctuating populations. A more indirect approach is to take empirical community matrices and compare their properties with randomized matrices that are not subject to any dy ...
Competition - WordPress.com
... How Do Keystone Species Structure Communities? • Even though species are not predictable assemblages, the structure of a community can change dramatically if a single species of predator or herbivore is removed from or added to a community. • A keystone species is a species that has a much greater ...
... How Do Keystone Species Structure Communities? • Even though species are not predictable assemblages, the structure of a community can change dramatically if a single species of predator or herbivore is removed from or added to a community. • A keystone species is a species that has a much greater ...
- Wiley Online Library
... complementarity and ⁄ or the selection effect are either niche partitioning or strong competitive interactions. Greater niche partitioning at higher levels of diversity can lead to gains in productivity because as more niches become filled there is greater efficiency of resource uptake, which fuels ...
... complementarity and ⁄ or the selection effect are either niche partitioning or strong competitive interactions. Greater niche partitioning at higher levels of diversity can lead to gains in productivity because as more niches become filled there is greater efficiency of resource uptake, which fuels ...
Wellborn et al. (1996)
... related to permanence (Table 1). With few exceptions, however, sorting occurs at the family level and below; most higher taxa (phyla, classes, orders) are not restricted to particular regions of the gradient. Among the groups in which these patterns have been quantified, species are often restricted ...
... related to permanence (Table 1). With few exceptions, however, sorting occurs at the family level and below; most higher taxa (phyla, classes, orders) are not restricted to particular regions of the gradient. Among the groups in which these patterns have been quantified, species are often restricted ...
Species Diversity of Browsing and Grazing Ungulates
... envisaged that a particular combination of different herbivore species could result in a higher primary production, and because of that a higher secondary production. Even if primary production remained constant, different combination of herbivores may use it more thoroughly, leaving less of it to d ...
... envisaged that a particular combination of different herbivore species could result in a higher primary production, and because of that a higher secondary production. Even if primary production remained constant, different combination of herbivores may use it more thoroughly, leaving less of it to d ...
Standard 7: Select terrestrial, freshwater and marine conservation
... component of a broader assessment. Still, if a region is to be assessed comprehensively, all of these groups must be addressed. While there may be disagreements about the perfect representation of scales of biodiversity or the taxonomy of units at each level, we seek to conserve, at a minimum, spati ...
... component of a broader assessment. Still, if a region is to be assessed comprehensively, all of these groups must be addressed. While there may be disagreements about the perfect representation of scales of biodiversity or the taxonomy of units at each level, we seek to conserve, at a minimum, spati ...
Does functional redundancy exist?
... First, functional redundancy may arise when species are equivalent competitors and coexistence obeys the neutral theory (Hubbell 2001). In this case, species have confounded isoclines in the Lotka-Volterra model, which leads to neutral stability and perfect functional redundancy. For this theory to ...
... First, functional redundancy may arise when species are equivalent competitors and coexistence obeys the neutral theory (Hubbell 2001). In this case, species have confounded isoclines in the Lotka-Volterra model, which leads to neutral stability and perfect functional redundancy. For this theory to ...
Mammal Community Structure in a World of Gradients
... America (Vucetich and Peterson, 2003), or ungulates and large carnivores in Africa (Grange and Duncan, 2006). Either process is bound to be dynamic, because primary production is not a constant input (see above) and both prey and predator populations are exposed to the forces from other abiotic and ...
... America (Vucetich and Peterson, 2003), or ungulates and large carnivores in Africa (Grange and Duncan, 2006). Either process is bound to be dynamic, because primary production is not a constant input (see above) and both prey and predator populations are exposed to the forces from other abiotic and ...
PopBio 2012 Abstracts - Department of Evolutionary Biology and
... between nature and theory. As a solution, we considered a set of four key traits, representing potential classes of species responses to different disturbance characteristics, and studied the response of all ...
... between nature and theory. As a solution, we considered a set of four key traits, representing potential classes of species responses to different disturbance characteristics, and studied the response of all ...
Final Report - The Rufford Foundation
... because gull predation on a highly vulnerable bird species nests, and aversion could be an interesting option to reduce that. We discarded the potential use of the resin as a masking substrate and started inquiring on an alternative procedure, the levamisole microencapsulation. Microencapsulation is ...
... because gull predation on a highly vulnerable bird species nests, and aversion could be an interesting option to reduce that. We discarded the potential use of the resin as a masking substrate and started inquiring on an alternative procedure, the levamisole microencapsulation. Microencapsulation is ...
State of California State Water Resources Control Board DIVISION OF WATER RIGHTS
... for Coleman National Fish Hatchery Juvenile Fall Chinook Salmon due to Severe Drought Conditions in 2014). For many of these species, there is no margin of error. Causing additional impacts on top of those created by the natural drought risks the loss of imperiled populations forever. In particular, ...
... for Coleman National Fish Hatchery Juvenile Fall Chinook Salmon due to Severe Drought Conditions in 2014). For many of these species, there is no margin of error. Causing additional impacts on top of those created by the natural drought risks the loss of imperiled populations forever. In particular, ...
Cooccurrence and food niche overlap of two common predators (red
... autumn period). In that way, both species may reduce potential competition for the same food spectrum (voles), at least partially. The diet of foxes is much more diverse than that of buzzards (rodents, birds, carrion, fruits, and garbage). The buzzard had a narrower niche breadth each year. The uniq ...
... autumn period). In that way, both species may reduce potential competition for the same food spectrum (voles), at least partially. The diet of foxes is much more diverse than that of buzzards (rodents, birds, carrion, fruits, and garbage). The buzzard had a narrower niche breadth each year. The uniq ...
Endemic predators, invasive prey and native diversity
... preference of many toads, there may be a general potential for bufonids as biocontrol agents; this is an area in need of further research. Intuitively, toads can only provide useful ecosystem services if they are abundant; yet (endemic) amphibians are the most threatened vertebrates on the planet [2 ...
... preference of many toads, there may be a general potential for bufonids as biocontrol agents; this is an area in need of further research. Intuitively, toads can only provide useful ecosystem services if they are abundant; yet (endemic) amphibians are the most threatened vertebrates on the planet [2 ...
Coevolutionary Dynamics and the Conservation of Mutualisms
... Mutualisms are interspecific interactions in which each of two partner species receives a net benefit. Well-known examples include interactions between plants and mycorrhizal fungi, plants and pollinators, animals and gut bacteria, and corals and zooxanthellae (Herre et al. 1999; Bronstein 2001a). Mut ...
... Mutualisms are interspecific interactions in which each of two partner species receives a net benefit. Well-known examples include interactions between plants and mycorrhizal fungi, plants and pollinators, animals and gut bacteria, and corals and zooxanthellae (Herre et al. 1999; Bronstein 2001a). Mut ...
Directing Research to Reduce the Impacts of
... occupies a large area or achieves large densities. Managers, however, do not want to waste time controlling species that are never likely to expand or become troublesome. There are many fertile areas for research on the dynamics of invasion lag phases. Most fundamentally, it is not clear whether lag ...
... occupies a large area or achieves large densities. Managers, however, do not want to waste time controlling species that are never likely to expand or become troublesome. There are many fertile areas for research on the dynamics of invasion lag phases. Most fundamentally, it is not clear whether lag ...
A Community Matrix Analysis of Heliconia Insect Communities
... laboratory experiments have measured directly the numerical effects of competitive interactions (Vandermeer 1969; Culver 1973), but field experiments either have been qualitative (Bovbjerg 1970; Jaeger 1971; Gill and Hairston 1972) or have used indirect nonmanipulative data (observational rather tha ...
... laboratory experiments have measured directly the numerical effects of competitive interactions (Vandermeer 1969; Culver 1973), but field experiments either have been qualitative (Bovbjerg 1970; Jaeger 1971; Gill and Hairston 1972) or have used indirect nonmanipulative data (observational rather tha ...
Chapter 5 review ES
... your gut that help you with digestion. This relationship is best defined as … ...
... your gut that help you with digestion. This relationship is best defined as … ...
Plant diversity in tropical forests: a review of mechanisms of species
... near conspecific adults. Insects and the few microbial pathogens studied to date do, however, act in a manner consistent with the Janzen-Connell hypothesis (Augspurger 1984; Gilbert et al. 1994; Gilbert and DeSteven 1996; Packer and Clay 2000). Do insects and pathogens reduce recruitment near conspe ...
... near conspecific adults. Insects and the few microbial pathogens studied to date do, however, act in a manner consistent with the Janzen-Connell hypothesis (Augspurger 1984; Gilbert et al. 1994; Gilbert and DeSteven 1996; Packer and Clay 2000). Do insects and pathogens reduce recruitment near conspe ...
methods - San Francisco State University
... by competition at low salinities, but freshwater plants are limited by physical factors at higher salinities (Crain et al. 2004). Mahall and Park (change to 1976a, 1976b?1976b, 1976c) showed that both salinity and soil aeration changed with elevation and that both were critical in determining the re ...
... by competition at low salinities, but freshwater plants are limited by physical factors at higher salinities (Crain et al. 2004). Mahall and Park (change to 1976a, 1976b?1976b, 1976c) showed that both salinity and soil aeration changed with elevation and that both were critical in determining the re ...
Entomopathogen biodiversity increases host
... most pairings were less effective than single highly effective species. This antagonism may have resulted from negative interactions between microbes or their toxins prior to or during the infection process. In several other studies, pathogen species pairs produced simple additive effects, such that ...
... most pairings were less effective than single highly effective species. This antagonism may have resulted from negative interactions between microbes or their toxins prior to or during the infection process. In several other studies, pathogen species pairs produced simple additive effects, such that ...
THE EFFCT OF DISTANCE FROM EDGE ON THE DENSITY AND
... Biodiversity is the variety of life in an ecosystem (Wilson, 2007). An ecosystem with more biodiversity is more likely to survive drastic habitat changes, such as natural disasters. It is important that ecosystems thrive because all life depends on the ecosystems for everyday resources such as food, ...
... Biodiversity is the variety of life in an ecosystem (Wilson, 2007). An ecosystem with more biodiversity is more likely to survive drastic habitat changes, such as natural disasters. It is important that ecosystems thrive because all life depends on the ecosystems for everyday resources such as food, ...
THE EFFCT OF DISTANCE FROM EDGE ON THE DENSITY AND
... could catch any grasshoppers that jumped or lived in the upper part of the grass; we swept two low so that we could catch the grasshoppers that prefer the lower part of the grass. In the lab, we then separated grasshoppers by set number and by transect letter and identified them in order to calculat ...
... could catch any grasshoppers that jumped or lived in the upper part of the grass; we swept two low so that we could catch the grasshoppers that prefer the lower part of the grass. In the lab, we then separated grasshoppers by set number and by transect letter and identified them in order to calculat ...
The community of an individual: implications for the community
... The core concept of the ecological community The core concept of ecological communities is that ecological organization and function result from individuals of different species interacting with one another. No other conceptual recipe defining a community seems to exist other than a collection of in ...
... The core concept of the ecological community The core concept of ecological communities is that ecological organization and function result from individuals of different species interacting with one another. No other conceptual recipe defining a community seems to exist other than a collection of in ...