IMPACT: Toward a framework for understanding the
... (Anagnostakis 1987, von Broembsen 1989). However, ecologists disagree over whether or not that invasion had a biologically significant impact on the Eastern deciduous forest as a whole (von Broembsen 1989, Day and Monk 1974, Shugart and West 1977). Such disagreement can be attributed in part to the ...
... (Anagnostakis 1987, von Broembsen 1989). However, ecologists disagree over whether or not that invasion had a biologically significant impact on the Eastern deciduous forest as a whole (von Broembsen 1989, Day and Monk 1974, Shugart and West 1977). Such disagreement can be attributed in part to the ...
Sustaining the Saco
... Introduction For sustainable management of an ecosystem or resources within an ecosystem, it is not enough to study specific species of interest. It is much more informative for management and conservation decision-making to consider the connections among species in the ecosystem. Connections among ...
... Introduction For sustainable management of an ecosystem or resources within an ecosystem, it is not enough to study specific species of interest. It is much more informative for management and conservation decision-making to consider the connections among species in the ecosystem. Connections among ...
4 Hierarchical competition in a pond-breeding anuran
... Pond breeding anurans are normally distributed across a well known hydrological gradient, ranging from ephemeral pools to large permanent lakes (Wellborn et al. 1996; Snodgrass et al. 2000; Babbitt et al. 2003), but local co-occurrence of species in different habitats is not unusual, in part because ...
... Pond breeding anurans are normally distributed across a well known hydrological gradient, ranging from ephemeral pools to large permanent lakes (Wellborn et al. 1996; Snodgrass et al. 2000; Babbitt et al. 2003), but local co-occurrence of species in different habitats is not unusual, in part because ...
Evolution, Biodiversity, and Population Ecology
... Copyright © 2006 Pearson Education, Inc., publishing as Benjamin Cummings Copyright © 2008 Pearson Education, Inc., publishing as Benjamin Cummings ...
... Copyright © 2006 Pearson Education, Inc., publishing as Benjamin Cummings Copyright © 2008 Pearson Education, Inc., publishing as Benjamin Cummings ...
Lecture 22. Succession Reconsidered
... -these sequences are reset every winter and repeat each growing season -are these true autogenic successions? -or merely a seasonal response to climate (phenology)? ...
... -these sequences are reset every winter and repeat each growing season -are these true autogenic successions? -or merely a seasonal response to climate (phenology)? ...
Summary
... • The Midwest became the farm belt at the expense of wildlife numbers rivaling the plains of Africa • The western regions reduced and eliminated many wildlife populations: At one time in the state of Colorado there were 0.00000 deer! ...
... • The Midwest became the farm belt at the expense of wildlife numbers rivaling the plains of Africa • The western regions reduced and eliminated many wildlife populations: At one time in the state of Colorado there were 0.00000 deer! ...
Traveling wave solutions of a reaction diffusion model for competing
... This assumption is equivalent to the transformations y1 ! y1/c12 and y2 ! y2/c21 (in the case c1250, c2150) and therefore only represents a re-scaling of yi which can be absorbed into the definitions of f and g. This rescaling of the interaction matrix C is commonly used in the pioneer-climax models ...
... This assumption is equivalent to the transformations y1 ! y1/c12 and y2 ! y2/c21 (in the case c1250, c2150) and therefore only represents a re-scaling of yi which can be absorbed into the definitions of f and g. This rescaling of the interaction matrix C is commonly used in the pioneer-climax models ...
a haunting legacy from isoclines: mammal
... coexistence. Competition will vanish to zero (the ghost of competition) when species occupy completely separate habitats. even though the potential for competition remains high. Competitive potential can be estimated from slopes of absolute isolegs that define boundaries between specialized use of a ...
... coexistence. Competition will vanish to zero (the ghost of competition) when species occupy completely separate habitats. even though the potential for competition remains high. Competitive potential can be estimated from slopes of absolute isolegs that define boundaries between specialized use of a ...
Current Understanding of Aerial Insectivore Population Declines in
... Current state of understanding about Aerial Insectivore declines Whereas earlier attention at the 2009 Aerial Insectivore workshop focused on assessing the influence of specific causes such as predation, pesticides and acid rain, recommendations from the 2012 workshop centred largely around the need ...
... Current state of understanding about Aerial Insectivore declines Whereas earlier attention at the 2009 Aerial Insectivore workshop focused on assessing the influence of specific causes such as predation, pesticides and acid rain, recommendations from the 2012 workshop centred largely around the need ...
Lunt - ozecopdf
... mostly along rail-lines, but also in some cemeteries and (very rarely) on roadsides. These sites are dominated by the native, perennial tussock-grass Themeda triandra Forsskal. The Gippsland railway line was constructed between 1878 and 1888 (Adams, 1987), and 40-50 years elapsed between the cessati ...
... mostly along rail-lines, but also in some cemeteries and (very rarely) on roadsides. These sites are dominated by the native, perennial tussock-grass Themeda triandra Forsskal. The Gippsland railway line was constructed between 1878 and 1888 (Adams, 1987), and 40-50 years elapsed between the cessati ...
forms and foundations of contemporary adaptation to
... in the North American soapberry bug Jadera haematoloma is remarkable in several respects. Already widely diversified into host races on native sapinds, during the past half century these insects have evolved races on introduced sapinds. These derivative populations appear to be as differentiated fro ...
... in the North American soapberry bug Jadera haematoloma is remarkable in several respects. Already widely diversified into host races on native sapinds, during the past half century these insects have evolved races on introduced sapinds. These derivative populations appear to be as differentiated fro ...
Mutualism or cooperation among competitors promotes coexistence
... In the Lotka-Volterra competition model and similar competition models, species can only coexist if between-species competition is weaker than within species. Prior modeling and field studies have shown that coexistence can be promoted by reducing the competitive ability between species through spat ...
... In the Lotka-Volterra competition model and similar competition models, species can only coexist if between-species competition is weaker than within species. Prior modeling and field studies have shown that coexistence can be promoted by reducing the competitive ability between species through spat ...
Predicting Pleistocene climate from vegetation in North America
... homogenization will produce a population with very little genetic differentiation (Hewitt, 2004). As this population spreads across the deglaciated zone, the genetic uniformity will be maintained for a long time. For trees, only a few hundred generations have passed since the LGM, too little for eit ...
... homogenization will produce a population with very little genetic differentiation (Hewitt, 2004). As this population spreads across the deglaciated zone, the genetic uniformity will be maintained for a long time. For trees, only a few hundred generations have passed since the LGM, too little for eit ...
- Wiley Online Library
... relatives than for distant relatives, then phylogenetically grouped species would be expected to experience more competition with each other than with distant relatives due to similar ecological requirements. Stronger competition among close relatives could then result in exclusion of the inferior c ...
... relatives than for distant relatives, then phylogenetically grouped species would be expected to experience more competition with each other than with distant relatives due to similar ecological requirements. Stronger competition among close relatives could then result in exclusion of the inferior c ...
Climate of the Past
... homogenization will produce a population with very little genetic differentiation (Hewitt, 2004). As this population spreads across the deglaciated zone, the genetic uniformity will be maintained for a long time. For trees, only a few hundred generations have passed since the LGM, too little for eit ...
... homogenization will produce a population with very little genetic differentiation (Hewitt, 2004). As this population spreads across the deglaciated zone, the genetic uniformity will be maintained for a long time. For trees, only a few hundred generations have passed since the LGM, too little for eit ...
Impact: Toward a Framework for Understanding the Ecological
... However, ecologists disagree over whether or not that invasion had a biologically significant impact on the Eastern deciduous forest as a whole (von Broembsen 1989; Day and Monk 1974; Shugart and West 1977). Such disagreement can be attributed in part to the fact that for many historical invasions w ...
... However, ecologists disagree over whether or not that invasion had a biologically significant impact on the Eastern deciduous forest as a whole (von Broembsen 1989; Day and Monk 1974; Shugart and West 1977). Such disagreement can be attributed in part to the fact that for many historical invasions w ...
From Not So Simple a Beginning
... of February to the beginning of March), and lived only on a ship. There are several species (especially those of birds) that Darwin does not describe that I do. There are two possible reasons for this, either the species were not present (migrating) during Darwin's ...
... of February to the beginning of March), and lived only on a ship. There are several species (especially those of birds) that Darwin does not describe that I do. There are two possible reasons for this, either the species were not present (migrating) during Darwin's ...
More closely related species are more ecologically similar in an
... model with all interactions with soil type (Table 2). To explore interactions between soil type and the effect of phylogenetic distance, we conducted sign tests. We found that the slope relating phylogenetic distance to relative interaction intensity (RII) was positive for 10 of 12 species in conspe ...
... model with all interactions with soil type (Table 2). To explore interactions between soil type and the effect of phylogenetic distance, we conducted sign tests. We found that the slope relating phylogenetic distance to relative interaction intensity (RII) was positive for 10 of 12 species in conspe ...
Impact: toward a framework for understanding
... However, ecologists disagree over whether or not that invasion had a biologically significant impact on the Eastern deciduous forest as a whole (von Broembsen 1989; Day and Monk 1974; Shugart and West 1977). Such disagreement can be attributed in part to the fact that for many historical invasions w ...
... However, ecologists disagree over whether or not that invasion had a biologically significant impact on the Eastern deciduous forest as a whole (von Broembsen 1989; Day and Monk 1974; Shugart and West 1977). Such disagreement can be attributed in part to the fact that for many historical invasions w ...
Ecology Connections 5. GUILDS One reason ecologists study
... Some species expand their colonies primarily by competitively displacing resident species from inhabited trees, other species expand their colonies primarily by workers spreading to adjacent uninhabited trees, and still other species form new colonies primarily by having competitively superior found ...
... Some species expand their colonies primarily by competitively displacing resident species from inhabited trees, other species expand their colonies primarily by workers spreading to adjacent uninhabited trees, and still other species form new colonies primarily by having competitively superior found ...
Conservation Challenges of Predator Recovery
... rates with statistical models that inform management decisions. The science needed to begin this effort is available now. Ongoing monitoring of predator populations—even after they recover—will be required to improve estimates of predator consumption rates and to track changes in diet patterns throu ...
... rates with statistical models that inform management decisions. The science needed to begin this effort is available now. Ongoing monitoring of predator populations—even after they recover—will be required to improve estimates of predator consumption rates and to track changes in diet patterns throu ...
Biodiversity: an introduction - European Commission
... 1. Numbers: The number of species in a particular area, the number of alleles in a locus, or indeed the number of taxonomic or functional groups in an ecosystem, all provide reasonable but incomplete indications of biodiversity. An inadequacy of this method is the difficulty of standardising measure ...
... 1. Numbers: The number of species in a particular area, the number of alleles in a locus, or indeed the number of taxonomic or functional groups in an ecosystem, all provide reasonable but incomplete indications of biodiversity. An inadequacy of this method is the difficulty of standardising measure ...
DODSON, STANLEY Predicting crustacean zooplankton species
... pelagic crustaceans, even rare species. The following is a brief description of the criteria used for choosing species; more complete information, including a justification of the criteria used, the species lists, and the literature cited, is available on request (Dodson 1992). Each species list inc ...
... pelagic crustaceans, even rare species. The following is a brief description of the criteria used for choosing species; more complete information, including a justification of the criteria used, the species lists, and the literature cited, is available on request (Dodson 1992). Each species list inc ...
mammals - The Woodland Trust
... ability to fly and their use of echolocation to navigate the night skies and find their prey. Their life history traits are also similar, with a complex annual cycle of autumn mating followed by winter hibernation and the gathering of females in spring to give birth, and their extraordinary longevit ...
... ability to fly and their use of echolocation to navigate the night skies and find their prey. Their life history traits are also similar, with a complex annual cycle of autumn mating followed by winter hibernation and the gathering of females in spring to give birth, and their extraordinary longevit ...
Island restoration
The ecological restoration of islands, or island restoration, is the application of the principles of ecological restoration to islands and island groups. Islands, due to their isolation, are home to many of the world's endemic species, as well as important breeding grounds for seabirds and some marine mammals. Their ecosystems are also very vulnerable to human disturbance and particularly to introduced species, due to their small size. Island groups such as New Zealand and Hawaii have undergone substantial extinctions and losses of habitat. Since the 1950s several organisations and government agencies around the world have worked to restore islands to their original states; New Zealand has used them to hold natural populations of species that would otherwise be unable to survive in the wild. The principal components of island restoration are the removal of introduced species and the reintroduction of native species.