J F MAMMALS OF THE FREEMAN RANCH, HAYS COUNTY, TEXAS
... species. Conservative grazing allowed perennial grass cover to increase to twice the amount of standing crop at season’s end compared to sites with intermediate grazing. In addition to assessing effects on native floras, several studies have quantified the effects of grazing on wildlife populations ...
... species. Conservative grazing allowed perennial grass cover to increase to twice the amount of standing crop at season’s end compared to sites with intermediate grazing. In addition to assessing effects on native floras, several studies have quantified the effects of grazing on wildlife populations ...
Marine Calcifiers in a High-CO Ocean
... (5, 6). The former method more closely mimics (bottom right) no change (7). Similar response patocean acidification because it increases the terns have been identified in benthic organisms (12). concentration of total dissolved CO2, whereas adjusting the carbonate chemistry with acid of E. huxleyi a ...
... (5, 6). The former method more closely mimics (bottom right) no change (7). Similar response patocean acidification because it increases the terns have been identified in benthic organisms (12). concentration of total dissolved CO2, whereas adjusting the carbonate chemistry with acid of E. huxleyi a ...
Ecological fidelity of functional traits based on species presence
... Because bats are very rare in most of the mammalian fossil record, we have limited our analyses to non-volant species. Ecological Traits and their Character Attributes.—Four functional ecological traits were used to characterize the ecology of the Amboseli mammal community: preferred diet (‘‘Diet’’) ...
... Because bats are very rare in most of the mammalian fossil record, we have limited our analyses to non-volant species. Ecological Traits and their Character Attributes.—Four functional ecological traits were used to characterize the ecology of the Amboseli mammal community: preferred diet (‘‘Diet’’) ...
Macroecological patterns of species richness in parasite assemblages
... Morand, 1999). No single host population (i.e. component community) is likely to include all species of parasites known to exploit the host species; instead, each component community is a subset of a larger collection of species referred to as the parasite fauna of the host species. Parasite faunas ...
... Morand, 1999). No single host population (i.e. component community) is likely to include all species of parasites known to exploit the host species; instead, each component community is a subset of a larger collection of species referred to as the parasite fauna of the host species. Parasite faunas ...
Speciation, and Conservation
... body of land completely surrounded by water. However, their primary biological characteristic, an extended period of isolation from a source of colonists, is common also to many situations on continents. Accordingly, theories and predictions developed for true islands have been applied to a huge arr ...
... body of land completely surrounded by water. However, their primary biological characteristic, an extended period of isolation from a source of colonists, is common also to many situations on continents. Accordingly, theories and predictions developed for true islands have been applied to a huge arr ...
adaptive radiation driven by the interplay of eco
... Losos 2009; Losos and Ricklefs 2009) starts with multiple allopatric speciation events. Next, migration brings the different species into contact. Reinforcement may then act if reproductive isolation is not completed. In this scenario, ecological differentiation occurs either in allopatry (by adapta ...
... Losos 2009; Losos and Ricklefs 2009) starts with multiple allopatric speciation events. Next, migration brings the different species into contact. Reinforcement may then act if reproductive isolation is not completed. In this scenario, ecological differentiation occurs either in allopatry (by adapta ...
Use of precise spatial data for describing spatial patterns and plant
... ecological processes, studies of plant patterns have often been conducted under the assumption that the results of pattern analysis can give information on the predominant ecological processes in these communities. In this context, it is important to state that in principle it is not possible to der ...
... ecological processes, studies of plant patterns have often been conducted under the assumption that the results of pattern analysis can give information on the predominant ecological processes in these communities. In this context, it is important to state that in principle it is not possible to der ...
Integrating spatial and temporal approaches to understanding
... data are readily available for many groups, there has been little integration of spatial and temporal patterns. Our goal in this paper is to promote the integration of spatial and temporal richness research by showing how it can advance ecological understanding and by outlining directions for future ...
... data are readily available for many groups, there has been little integration of spatial and temporal patterns. Our goal in this paper is to promote the integration of spatial and temporal richness research by showing how it can advance ecological understanding and by outlining directions for future ...
Physiological Ecology of Rocky Intertidal Organisms: A Synergy of Concepts L T *
... Hofmann, 2001; Tomanek, this volume). These studies have shown that patterns in the temperatures of intertidal organisms are often highly complex, and that often variability over spatial scales of meters can exceed those observed over a latitudinal gradient (Helmuth, this volume). Importantly, becau ...
... Hofmann, 2001; Tomanek, this volume). These studies have shown that patterns in the temperatures of intertidal organisms are often highly complex, and that often variability over spatial scales of meters can exceed those observed over a latitudinal gradient (Helmuth, this volume). Importantly, becau ...
Definitions, Categories and Criteria for Threatened and Priority
... catchment such that death of some of the original flora has occurred due to dependence on fresh water. The system may be bought back to a semblance of the original state by redirecting saline runoff and pumping waters of the rising watertable away to restore the hydrological balance. Total destructi ...
... catchment such that death of some of the original flora has occurred due to dependence on fresh water. The system may be bought back to a semblance of the original state by redirecting saline runoff and pumping waters of the rising watertable away to restore the hydrological balance. Total destructi ...
Restoration of Ecosystems
... – (reclamation, rehabilitation, revegetation) creates unrealistic expectations ...
... – (reclamation, rehabilitation, revegetation) creates unrealistic expectations ...
RESUME - Arkansas State University
... translocation of Lomatium (Apiaceae) species outside their geographic ranges. Oikos 118: 17831792. Pelini, S. L., J. D. K. Dzurisin, K. M. Prior, C. M. Williams, T. D. Marsico, B. J. Sinclair, and J. J. Hellmann. 2009. Translocation experiments with butterflies reveal limits to enhancement of pole ...
... translocation of Lomatium (Apiaceae) species outside their geographic ranges. Oikos 118: 17831792. Pelini, S. L., J. D. K. Dzurisin, K. M. Prior, C. M. Williams, T. D. Marsico, B. J. Sinclair, and J. J. Hellmann. 2009. Translocation experiments with butterflies reveal limits to enhancement of pole ...
Taking species abundance distributions beyond
... Most work on the SAD has focused on the frequency distribution of the number of individuals per species (numerical abundance). This is a natural way to characterize SADs and predictions for this type of abundance distribution are available for a variety of models. Numerical abundance is commonly use ...
... Most work on the SAD has focused on the frequency distribution of the number of individuals per species (numerical abundance). This is a natural way to characterize SADs and predictions for this type of abundance distribution are available for a variety of models. Numerical abundance is commonly use ...
AP Bio Directed Study – Summer Assignment Ecology: Chapters 50
... Information and Powerpoint® Presentations for the AP Biology summer assignment can be found at http://carnesapbiology.wordpress.com/ (click on Summer AP Bio Study) in the upper right-hand corner of the web screen. The Powerpoint® Presentations can be accessed by clicking on the appropriate page at ...
... Information and Powerpoint® Presentations for the AP Biology summer assignment can be found at http://carnesapbiology.wordpress.com/ (click on Summer AP Bio Study) in the upper right-hand corner of the web screen. The Powerpoint® Presentations can be accessed by clicking on the appropriate page at ...
Definitions, Categories and Criteria for Threatened and Priority
... in danger of significant modification throughout its range or severe modification or destruction over most of its range in the near future. An ecological community will be listed as Endangered when it has been adequately surveyed and is not Critically Endangered but is facing a very high risk of tot ...
... in danger of significant modification throughout its range or severe modification or destruction over most of its range in the near future. An ecological community will be listed as Endangered when it has been adequately surveyed and is not Critically Endangered but is facing a very high risk of tot ...
supervisors
... Kara E. Yopak’s research interests have focused on comparative neuroanatomy within sharks, skates, and rays (collectively known as cartilaginous fishes), particularly how the development of major brain areas vary between species in conjunction with the adaptive evolution of their sensory and motor s ...
... Kara E. Yopak’s research interests have focused on comparative neuroanatomy within sharks, skates, and rays (collectively known as cartilaginous fishes), particularly how the development of major brain areas vary between species in conjunction with the adaptive evolution of their sensory and motor s ...
Peppered Moth Simulation Objective: Simulate
... Objective: Simulate changes in moth population due to pollution and predation, and observe how species can change over time. Introduction: Charles Darwin accumulated a tremendous collection of facts to support the theory of evolution by natural selection. One of his difficulties in demonstrating the ...
... Objective: Simulate changes in moth population due to pollution and predation, and observe how species can change over time. Introduction: Charles Darwin accumulated a tremendous collection of facts to support the theory of evolution by natural selection. One of his difficulties in demonstrating the ...
Disturbance and distributions: avoiding exclusion in a warming world
... elevation treeline, thus expanding the area for high elevation vegetation that cannot otherwise persist under tree cover. The role of disturbance in influencing interspecific competition and resulting species persistence and distributions appears unjustly neglected. I identify various implications, ...
... elevation treeline, thus expanding the area for high elevation vegetation that cannot otherwise persist under tree cover. The role of disturbance in influencing interspecific competition and resulting species persistence and distributions appears unjustly neglected. I identify various implications, ...
Moment Approximations of Individual-based Models
... is homogeneous in space, and any spatial structure that develops is generated internally by the community. Locations of individuals of species i at some point in time t are given by a function pi (x), and these are collected into a vector of density functions p(x) = ( p1 (x), p2 (x), . . . ) to give ...
... is homogeneous in space, and any spatial structure that develops is generated internally by the community. Locations of individuals of species i at some point in time t are given by a function pi (x), and these are collected into a vector of density functions p(x) = ( p1 (x), p2 (x), . . . ) to give ...
Population spatial structure, human
... (Fahrig et al. 1995). Road mortality has also been. VKRZQWa be significant for many other species LQcludLQg amphibians, reptiles, small and large mammals, birds, and some invertebrate.s (e.g., Mader 1984, Siege! 1986, Mernam et al. 1989, Baur & Baur 1990, Rosen & Lowe 1994). The effect of road mor ...
... (Fahrig et al. 1995). Road mortality has also been. VKRZQWa be significant for many other species LQcludLQg amphibians, reptiles, small and large mammals, birds, and some invertebrate.s (e.g., Mader 1984, Siege! 1986, Mernam et al. 1989, Baur & Baur 1990, Rosen & Lowe 1994). The effect of road mor ...
Peppered Moth Simulation
... Objective: Simulate changes in moth population due to pollution and predation, and observe how species can change over time. ...
... Objective: Simulate changes in moth population due to pollution and predation, and observe how species can change over time. ...
Peppered Moth Simulation questions
... Objective: Simulate changes in moth population due to pollution and predation, and observe how species can change over time. ...
... Objective: Simulate changes in moth population due to pollution and predation, and observe how species can change over time. ...
Life Cycle of the Peppered Moth
... Objective: Simulate changes in moth population due to pollution and predation, and observe how species can change over time. ...
... Objective: Simulate changes in moth population due to pollution and predation, and observe how species can change over time. ...
Comparative ecology of desert small mammals: a
... approaches, however. Although comparison of local to regional species composition strongly supports a role of competition in the Negev Desert (Kelt et al. 1996), subsequent analysis of small mammal assemblage composition at 24 permanent 1-ha grids and use of 2 approaches based on regression models y ...
... approaches, however. Although comparison of local to regional species composition strongly supports a role of competition in the Negev Desert (Kelt et al. 1996), subsequent analysis of small mammal assemblage composition at 24 permanent 1-ha grids and use of 2 approaches based on regression models y ...
Reprint (1.8MB PDF) - Litchman-Klausmeier Lab
... et al., 2009; Post and Palkovacs, 2009; Ellner et al., 2011). Where this modifies interspecific interactions essential for coexistence, we must revisit our understanding of coexistence mechanisms from a new perspective (Egas et al., 2004; Shoresh et al., 2008; Lankau, 2010; Bolnick et al., 2011; Snyde ...
... et al., 2009; Post and Palkovacs, 2009; Ellner et al., 2011). Where this modifies interspecific interactions essential for coexistence, we must revisit our understanding of coexistence mechanisms from a new perspective (Egas et al., 2004; Shoresh et al., 2008; Lankau, 2010; Bolnick et al., 2011; Snyde ...
Biogeography
Biogeography is the study of the distribution of species and ecosystems in geographic space and through geological time. Organisms and biological communities often vary in a regular fashion along geographic gradients of latitude, elevation, isolation and habitat area. Phytogeography is the branch of biogeography that studies the distribution of plants. Zoogeography is the branch that studies distribution of animals.Knowledge of spatial variation in the numbers and types of organisms is as vital to us today as it was to our early human ancestors, as we adapt to heterogeneous but geographically predictable environments. Biogeography is an integrative field of inquiry that unites concepts and information from ecology, evolutionary biology, geology, and physical geography.Modern biogeographic research combines information and ideas from many fields, from the physiological and ecological constraints on organismal dispersal to geological and climatological phenomena operating at global spatial scales and evolutionary time frames.The short-term interactions within a habitat and species of organisms describe the ecological application of biogeography. Historical biogeography describes the long-term, evolutionary periods of time for broader classifications of organisms. Early scientists, beginning with Carl Linnaeus, contributed theories to the contributions of the development of biogeography as a science. Beginning in the mid-18th century, Europeans explored the world and discovered the biodiversity of life. Linnaeus initiated the ways to classify organisms through his exploration of undiscovered territories.The scientific theory of biogeography grows out of the work of Alexander von Humboldt (1769–1859), Hewett Cottrell Watson (1804–1881), Alphonse de Candolle (1806–1893), Alfred Russel Wallace (1823–1913), Philip Lutley Sclater (1829–1913) and other biologists and explorers.