Characterization of the thermal tolerances of forest ants of New England
... a single Formicinae species that shared a thermal tolerance of 38°C. Group ‘‘d’’ consisted of the Formicinae species Lasius nearcticus, which had a thermal tolerance of 36°C, with no variation among individuals. Due to observed differences among subfamilies, subsequent analysis examined variation of ...
... a single Formicinae species that shared a thermal tolerance of 38°C. Group ‘‘d’’ consisted of the Formicinae species Lasius nearcticus, which had a thermal tolerance of 36°C, with no variation among individuals. Due to observed differences among subfamilies, subsequent analysis examined variation of ...
Network structural properties mediate the stability of mutualistic
... Key advances are being made on the structures of predator–prey food webs and competitive communities that enhance their stability, but little attention has been given to such complexity–stability relationships for mutualistic communities. We show, by way of theoretical analyses with empirically info ...
... Key advances are being made on the structures of predator–prey food webs and competitive communities that enhance their stability, but little attention has been given to such complexity–stability relationships for mutualistic communities. We show, by way of theoretical analyses with empirically info ...
Reciprocal facilitation and nonlinearity maintain habitat engineering
... Caribbean reef, we first describe the form of the response of parrotfish abundance to increasing topographic complexity generated by coral growth. Topographic complexity enhanced parrotfish abundance by promoting habitat suitability, but the shape (linear vs asymptotic) and strength of this response ...
... Caribbean reef, we first describe the form of the response of parrotfish abundance to increasing topographic complexity generated by coral growth. Topographic complexity enhanced parrotfish abundance by promoting habitat suitability, but the shape (linear vs asymptotic) and strength of this response ...
video slide - Manchester Township School District
... • The total of a species’ use of biotic and abiotic resources is called the species’ ecological niche • Ecologically similar species can coexist in a community if there are one or more significant differences in their niches • As a result of competition, a species’ fundamental niche may differ from ...
... • The total of a species’ use of biotic and abiotic resources is called the species’ ecological niche • Ecologically similar species can coexist in a community if there are one or more significant differences in their niches • As a result of competition, a species’ fundamental niche may differ from ...
Food Webs, Models and Species Extinctions in a
... community structure and species interactions interact and affect the risk of extinction of single species needs to be increased. Thus the primary aim of the present thesis is to study this interaction and contribute to a theoretical basis for the identification of extinction prone species. In paper ...
... community structure and species interactions interact and affect the risk of extinction of single species needs to be increased. Thus the primary aim of the present thesis is to study this interaction and contribute to a theoretical basis for the identification of extinction prone species. In paper ...
A Survey and Overview of Habitat Fragmentation Experiments
... Following from the theory of island biogeography (MacArthur & Wilson 1967), species richness in habitat fragments is expected to be a function of island size and degree of isolation. Smaller, more isolated fragments are expected to retain fewer species than larger, less isolated habitat tracts (Diam ...
... Following from the theory of island biogeography (MacArthur & Wilson 1967), species richness in habitat fragments is expected to be a function of island size and degree of isolation. Smaller, more isolated fragments are expected to retain fewer species than larger, less isolated habitat tracts (Diam ...
Predicting ecosystem stability from community composition and
... at all levels of species diversity (Fig. 1, left panels). At high levels of connectance and interspecific competition, the match was still present but was less strong (Fig. 1, right panels). Recall that our prediction includes the effect of interspecific competition on average species abundances, bu ...
... at all levels of species diversity (Fig. 1, left panels). At high levels of connectance and interspecific competition, the match was still present but was less strong (Fig. 1, right panels). Recall that our prediction includes the effect of interspecific competition on average species abundances, bu ...
Spatio-temporal water uptake patterns of tree saplings are not
... uptake of limiting resources and thus increased biomass production in diverse plant species mixtures (Loreau and Hector, 2001; Cardinale et al., 2012) and lower vulnerability to drought because of more complete soil water utilization (Yang et al., 2011). This would also open management options to us ...
... uptake of limiting resources and thus increased biomass production in diverse plant species mixtures (Loreau and Hector, 2001; Cardinale et al., 2012) and lower vulnerability to drought because of more complete soil water utilization (Yang et al., 2011). This would also open management options to us ...
Eastern Foxsnake (Elaphe gloydi) - Registre public des espèces en
... Retreat into hibernacula occurs in September and October. Eastern Foxsnakes of the Georgian Bay Coast use much more space than those in Essex-Kent: on average, Georgian Bay females disperse 3.5 times farther from their hibernacula. Predators of Eastern Foxsnakes include the larger birds of prey and ...
... Retreat into hibernacula occurs in September and October. Eastern Foxsnakes of the Georgian Bay Coast use much more space than those in Essex-Kent: on average, Georgian Bay females disperse 3.5 times farther from their hibernacula. Predators of Eastern Foxsnakes include the larger birds of prey and ...
Five Potential Consequences of Climate Change for Invasive Species
... Climate change is expected to substantially alter biodiversity, causing changes in phenology, genetic composition, and species ranges, and affecting species interactions and ecosystem processes (Walther et al. 2002; Root et al. 2003). Most treatments of species responses focus on native species for ...
... Climate change is expected to substantially alter biodiversity, causing changes in phenology, genetic composition, and species ranges, and affecting species interactions and ecosystem processes (Walther et al. 2002; Root et al. 2003). Most treatments of species responses focus on native species for ...
Learning Outcomes for Ecology Concepts and Applications 6e
... 1. Describe some emerging frontiers in ecology. 2. Explain how the use of stable isotopes has extended what it is possible to know about the ecology of warblers. 3. Compare the spatial and temporal scales addressed by the research of Robert MacArthur, Nalini Nadkarni, and Margaret Davis. Investigati ...
... 1. Describe some emerging frontiers in ecology. 2. Explain how the use of stable isotopes has extended what it is possible to know about the ecology of warblers. 3. Compare the spatial and temporal scales addressed by the research of Robert MacArthur, Nalini Nadkarni, and Margaret Davis. Investigati ...
Species At Risk in Northern Ontario Guide
... • Builds cup-shaped mud nests on humanmade structures that are re-used from year to year ...
... • Builds cup-shaped mud nests on humanmade structures that are re-used from year to year ...
Plant Succession: Life History and Competition
... With the above interpretation, the Lotka-Volterra competition model produces a pattern of species replacement resembling succession. The dynamic properties of this equation, as opposed to its equilibrium solution, may be determined by computer simulations (King and Anderson 1971; Huston 1979). For t ...
... With the above interpretation, the Lotka-Volterra competition model produces a pattern of species replacement resembling succession. The dynamic properties of this equation, as opposed to its equilibrium solution, may be determined by computer simulations (King and Anderson 1971; Huston 1979). For t ...
THE GREATER SAGE
... Why are they at risk? Greater Sage-Grouse are listed as endangered under the federal Species at Risk Act (SARA). Sage grouse now occupy only about 7% of their historical range in Canada. The estimated number of Greater Sage-Grouse in Canada has fallen to an all-time low level. As of 2012, only 93–13 ...
... Why are they at risk? Greater Sage-Grouse are listed as endangered under the federal Species at Risk Act (SARA). Sage grouse now occupy only about 7% of their historical range in Canada. The estimated number of Greater Sage-Grouse in Canada has fallen to an all-time low level. As of 2012, only 93–13 ...
bivalve aquaculture and exotic species: a review of ecological
... former mussel beds into oyster reefs. However, some of these observed changes might be facilitated by factors other than competitive exclusion such as milder winters recently experienced in the German Wadden Sea (Nehls et al. 2006). Although often understandable in hindsight, the influence of exotic ...
... former mussel beds into oyster reefs. However, some of these observed changes might be facilitated by factors other than competitive exclusion such as milder winters recently experienced in the German Wadden Sea (Nehls et al. 2006). Although often understandable in hindsight, the influence of exotic ...
Community 1 A
... occurs when species compete for a resource in short supply – Strong competition can lead to competitive exclusion, local elimination of a competing species – Competitive Exclusion Principle: two species competing for the same limiting resources cannot coexist in the same place ...
... occurs when species compete for a resource in short supply – Strong competition can lead to competitive exclusion, local elimination of a competing species – Competitive Exclusion Principle: two species competing for the same limiting resources cannot coexist in the same place ...
Assessing the role of sexual selection in adaptive radiation of the
... (Dobzhansky 1937; Mayr 1963). Thus we might expect to find groups of bird species displaying ornamental traits in the present day that at least formerly served as isolating or recognition mechanisms during the adaptive radiation of closely related species but now represent evolutionary relics of rap ...
... (Dobzhansky 1937; Mayr 1963). Thus we might expect to find groups of bird species displaying ornamental traits in the present day that at least formerly served as isolating or recognition mechanisms during the adaptive radiation of closely related species but now represent evolutionary relics of rap ...
Lizard community structure across a grassland
... few to no other shrubs and an abundance of bare soil. Larger creosote bush shrubs often had small patches of grass at their bases as well as packrat (Neotoma spp.) nests. Grassland sites were dominated by large grass clumps interspersed with smaller areas of bare soil, scattered small shrubs, and yu ...
... few to no other shrubs and an abundance of bare soil. Larger creosote bush shrubs often had small patches of grass at their bases as well as packrat (Neotoma spp.) nests. Grassland sites were dominated by large grass clumps interspersed with smaller areas of bare soil, scattered small shrubs, and yu ...
1 - Biology Department | UNC Chapel Hill
... Disease may have played a rôle. Based on what. There are other potential explanations not mentioned ...
... Disease may have played a rôle. Based on what. There are other potential explanations not mentioned ...
GARRY OAK ECOSYSTEMS RECOVERY TEAM
... Overall, less than 5 percent of the original ecosystems still remains, and this is only in isolated, fragmented communities that mostly have no connection to other Garry oak communities, thereby preventing migration of populations or mixing of genetic material of species from one area to another. Th ...
... Overall, less than 5 percent of the original ecosystems still remains, and this is only in isolated, fragmented communities that mostly have no connection to other Garry oak communities, thereby preventing migration of populations or mixing of genetic material of species from one area to another. Th ...
14.1 Habitat And Niche
... Resource availability gives structure to a community. • Species can share habitats and resources. • Competition occurs when two species use resources in the same way. • Competitive exclusion keeps two species from occupying the same niche. ...
... Resource availability gives structure to a community. • Species can share habitats and resources. • Competition occurs when two species use resources in the same way. • Competitive exclusion keeps two species from occupying the same niche. ...
Bio-Protection & Ecology Division Lake Rotokare Scenic Reserve Invertebrate Ecological Restoration Proposal
... such birds and lizards enjoy (Nash, 2004). Larger invertebrates such as weta are easier to ‘sell’ to public than smaller, lesser known species due to their iconic nature. However, restoring invertebrate communities is not just about looking after the large iconic ‘showy’ ...
... such birds and lizards enjoy (Nash, 2004). Larger invertebrates such as weta are easier to ‘sell’ to public than smaller, lesser known species due to their iconic nature. However, restoring invertebrate communities is not just about looking after the large iconic ‘showy’ ...
Local Biodiversity Action Plan
... Climate Change Although climate change is largely accepted, the specific impact it is having, and will have in the future, is difficult to predict. The distribution of species and valued habitats may contract or expand or be wiped out completely. Non-native species may expand their range and provide ...
... Climate Change Although climate change is largely accepted, the specific impact it is having, and will have in the future, is difficult to predict. The distribution of species and valued habitats may contract or expand or be wiped out completely. Non-native species may expand their range and provide ...
Quality and quantity of particulate organic matter and nutrition of
... Tortanus sp. were not reported in the earlier studies but were observed in the present investigation. Purely herbivorous forms like Nannocalanus minor, Paracalanus sp. and Temora discaudata were less abundant during the pre-monsoon sampling, because of reduced diatom concentrations. In contrast, inc ...
... Tortanus sp. were not reported in the earlier studies but were observed in the present investigation. Purely herbivorous forms like Nannocalanus minor, Paracalanus sp. and Temora discaudata were less abundant during the pre-monsoon sampling, because of reduced diatom concentrations. In contrast, inc ...
Coexistence in competition models with density dependent mortality
... = w −D + dt 1 + Bu where v and w are the densities of the two competitors and u is the density of the prey. In model (1.1) the contributions of the interaction between the competitor with density w and the prey u to the growth rates of those species are described by Holling II functional response te ...
... = w −D + dt 1 + Bu where v and w are the densities of the two competitors and u is the density of the prey. In model (1.1) the contributions of the interaction between the competitor with density w and the prey u to the growth rates of those species are described by Holling II functional response te ...