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 ...
Comparison of terrestrial large-mammal communities in Suriname v2
... similarity between Raleighvallen and Boven Coesewijne, but not at all in the high similarity between Brownsberg and Boven Coesewijne. Also, not a single, typical savanna species (like Whitetailed Deer or Crab-eating Fox) was observed at Boven Coesewijne. Habitat differences seem to be more pronounce ...
... similarity between Raleighvallen and Boven Coesewijne, but not at all in the high similarity between Brownsberg and Boven Coesewijne. Also, not a single, typical savanna species (like Whitetailed Deer or Crab-eating Fox) was observed at Boven Coesewijne. Habitat differences seem to be more pronounce ...
Ecosystem of Change
... Read this passage based on the text and answer the questions that follow. The towering trees in an old forest have been growing there for hundreds of years. It may seem as though the forest has been there forever. But no ecosystem is truly static. The numbers and types of species in most ecosystems ...
... Read this passage based on the text and answer the questions that follow. The towering trees in an old forest have been growing there for hundreds of years. It may seem as though the forest has been there forever. But no ecosystem is truly static. The numbers and types of species in most ecosystems ...
restoration of mediterranean - type woodlands and shrublands
... is strong enough to influence current restoration approaches, of which there are a large number indeed in the various MCRs. As elsewhere, the first step towards restoration is to identify and halt degradation processes. Such processes affecting MCRs today are land degradation produced by long-term o ...
... is strong enough to influence current restoration approaches, of which there are a large number indeed in the various MCRs. As elsewhere, the first step towards restoration is to identify and halt degradation processes. Such processes affecting MCRs today are land degradation produced by long-term o ...
aspen - School of Natural Resources and Environment
... understory and successional pathway over the entire spatial extent of UMBS and region. ...
... understory and successional pathway over the entire spatial extent of UMBS and region. ...
Focus On: Wildlife Management - Alberta Environment and Parks
... make a significant contribution to the support of wildlife conservation. Hunting plays an important role in the management of game species. Each year, populations of game animals produce more offspring than their habitats can support. The result is an annual surplus of animals that will die from pre ...
... make a significant contribution to the support of wildlife conservation. Hunting plays an important role in the management of game species. Each year, populations of game animals produce more offspring than their habitats can support. The result is an annual surplus of animals that will die from pre ...
Darkling Beetles (Coleoptera: Tenebrionidae) of Canadian Grasslands
... The family Tenebrionidae is one of the most speciose groups of Coleoptera, with approximately 20,000 described species worldwide (Bouchard et al. 2009; Matthews et al. 2010). It includes groups formally treated as separate families, such as the Lagriidae and Alleculidae, now recognized as subfamilie ...
... The family Tenebrionidae is one of the most speciose groups of Coleoptera, with approximately 20,000 described species worldwide (Bouchard et al. 2009; Matthews et al. 2010). It includes groups formally treated as separate families, such as the Lagriidae and Alleculidae, now recognized as subfamilie ...
the ecological consequences of changes in biodiversity
... roots, or of flammable tissues, can have large impacts on ecosystem processes (e.g., Vitousek and Hooper 1993). Species composition is likely to be one of the major determinants of stability, primary productivity, nutrient dynamics, invasibility, and other ecosystem traits. Diversity may also impact ...
... roots, or of flammable tissues, can have large impacts on ecosystem processes (e.g., Vitousek and Hooper 1993). Species composition is likely to be one of the major determinants of stability, primary productivity, nutrient dynamics, invasibility, and other ecosystem traits. Diversity may also impact ...
network topology and biodiversity loss in food webs: robustness
... fragility of the Scotch Broom web to removal of the most-connected species (the “Silwood Park” web, Solé and Montoya 2001). However, the Scotch Broom and Ythan Estuary webs are unusual among the 16 data sets in having very low connectance and very few (≤ 6%) basal taxa represented (12 of 13 other we ...
... fragility of the Scotch Broom web to removal of the most-connected species (the “Silwood Park” web, Solé and Montoya 2001). However, the Scotch Broom and Ythan Estuary webs are unusual among the 16 data sets in having very low connectance and very few (≤ 6%) basal taxa represented (12 of 13 other we ...
The ecological consequences of habitat fragmentation
... phenomenon. Much of what the study of habitat fragmentation is concerned with today is the ecological consequences of land-use change for organisms living in networks of remnant patches surrounded by a mosaic of modified or novel land use types. This was not always the case, though. The historical r ...
... phenomenon. Much of what the study of habitat fragmentation is concerned with today is the ecological consequences of land-use change for organisms living in networks of remnant patches surrounded by a mosaic of modified or novel land use types. This was not always the case, though. The historical r ...
Hamster, Cricetus cricetus - European Commission
... (except for Hungary where it is listed under Annex V). As a result, Member States must take the following measures to ensure its conservation. General requirements Member States must undertake measures that are designed to maintain or restore the hamster at a ‘favourable conservation status’ in the ...
... (except for Hungary where it is listed under Annex V). As a result, Member States must take the following measures to ensure its conservation. General requirements Member States must undertake measures that are designed to maintain or restore the hamster at a ‘favourable conservation status’ in the ...
Sociometric analysis of the role of penaeids in the continental shelf
... over 50% of total estimated discards, from this, tropical shrimp trawl fisheries have the highest discard rate accounting for around 27% of total estimated discards (Keller, 2005). In recent years, a reduction in discards has been observed, due to the promotion of using more selective fishing gears ...
... over 50% of total estimated discards, from this, tropical shrimp trawl fisheries have the highest discard rate accounting for around 27% of total estimated discards (Keller, 2005). In recent years, a reduction in discards has been observed, due to the promotion of using more selective fishing gears ...
Estimating the tolerance of species to the effects
... Global environmental change is accelerating as anthropogenic effects are increasing over short time scales.1, 2 The effects of such unprecedented change are modifying the abundance, physiology, and geographic range of individual species,3, 4, 5 and also affecting species interactions with the potent ...
... Global environmental change is accelerating as anthropogenic effects are increasing over short time scales.1, 2 The effects of such unprecedented change are modifying the abundance, physiology, and geographic range of individual species,3, 4, 5 and also affecting species interactions with the potent ...
DEVELOPING ONTARIO`S RING OF FIRE: POSSIBLE IMPACTS
... occurs. Attempting remediation afterward can be a very expensive process. For example, is estimated that since 1990, the United States have spent nearly $15 billion dollars on restoring degraded rivers (PEW, 2012). To degrade these ecosystems will reduce the natural benefits of this area, and inevit ...
... occurs. Attempting remediation afterward can be a very expensive process. For example, is estimated that since 1990, the United States have spent nearly $15 billion dollars on restoring degraded rivers (PEW, 2012). To degrade these ecosystems will reduce the natural benefits of this area, and inevit ...
Species Action Plan - Butterfly Conservation
... The Black Hairstreak is univoltine, adults flying for a comparatively short period, normally between mid June and mid July. The butterflies are difficult to see, flying only occasionally high above the tree canopy. Flight consists of short, rapid looping in and out of the tree tops, typically in war ...
... The Black Hairstreak is univoltine, adults flying for a comparatively short period, normally between mid June and mid July. The butterflies are difficult to see, flying only occasionally high above the tree canopy. Flight consists of short, rapid looping in and out of the tree tops, typically in war ...
Study Guide for Ecology Test 1
... pyramids. Be able to explain how an energy pyramid is still consistent with the Law of Conservation of Energy. Be able to define generalist species and specialist species and give examples of each. Be able to explain the advantages and disadvantages of each strategy. Be able to define intraspecific ...
... pyramids. Be able to explain how an energy pyramid is still consistent with the Law of Conservation of Energy. Be able to define generalist species and specialist species and give examples of each. Be able to explain the advantages and disadvantages of each strategy. Be able to define intraspecific ...
Study Guide for Ecology Test 1 - Mercer Island School District
... pyramids. Be able to explain how an energy pyramid is still consistent with the Law of Conservation of Energy. Be able to define generalist species and specialist species and give examples of each. Be able to explain the advantages and disadvantages of each strategy. Be able to define intraspecific ...
... pyramids. Be able to explain how an energy pyramid is still consistent with the Law of Conservation of Energy. Be able to define generalist species and specialist species and give examples of each. Be able to explain the advantages and disadvantages of each strategy. Be able to define intraspecific ...
Biomes - SEPUP
... because its traits are likely to still be helpful to it in this new environment. The enviclimates of these two locations are ronment where an organism lives is influenced by both bioticc (living) and abiotic (nonliving) factors. Abiotic factors include climate and type of soil. Across the world not ...
... because its traits are likely to still be helpful to it in this new environment. The enviclimates of these two locations are ronment where an organism lives is influenced by both bioticc (living) and abiotic (nonliving) factors. Abiotic factors include climate and type of soil. Across the world not ...
Species-rich ecosystems are vulnerable to cascading extinctions in an increasingly variable world
... in abundance when rare—the so-called invasibility criterion (MacArthur 1972). One of the conditions for this criterion to be fulfilled is that species differ in their response to the environmental variability. On a similar note, it has been argued that intermediate intensity and frequency of disturb ...
... in abundance when rare—the so-called invasibility criterion (MacArthur 1972). One of the conditions for this criterion to be fulfilled is that species differ in their response to the environmental variability. On a similar note, it has been argued that intermediate intensity and frequency of disturb ...
BIOGEOGRAPHY 8
... segment or a closed polygon is a simplification, but this in itself does not invalidate the analysis. For example, occupied sites within the geographic range of a species may be organized as a metapopulation (Levins 1969), in which local extinctions and recolonizations are common. Nevertheless, draw ...
... segment or a closed polygon is a simplification, but this in itself does not invalidate the analysis. For example, occupied sites within the geographic range of a species may be organized as a metapopulation (Levins 1969), in which local extinctions and recolonizations are common. Nevertheless, draw ...
IB ENVIRONMENTAL SYSTEMS AND SOCIETIES 2016
... These terms should be applied when characterizing real systems. • An open system exchanges matter and energy with its surroundings (for example, an ecosystem). • A closed system exchanges energy but not matter; the “Biosphere II” experiment was an attempt to model this. Strictly, closed systems do n ...
... These terms should be applied when characterizing real systems. • An open system exchanges matter and energy with its surroundings (for example, an ecosystem). • A closed system exchanges energy but not matter; the “Biosphere II” experiment was an attempt to model this. Strictly, closed systems do n ...
Wildlife Management and Policy
... threatened and vulnerable species. The course will expose students to the basic concepts in wildlife ecology such as population dynamics, genetics, and conservation focusing on both marine and terrestrial species. Target species such as manatees, jaguars, birds and crocodiles will be selected for pa ...
... threatened and vulnerable species. The course will expose students to the basic concepts in wildlife ecology such as population dynamics, genetics, and conservation focusing on both marine and terrestrial species. Target species such as manatees, jaguars, birds and crocodiles will be selected for pa ...
Canadian Herpetological Society Société d`herpétologie du Canada
... individuals in the population). A third component was to develop a habitat suitability model from occurrence data for the entire range to predict habitat-specific densities and overall population size of rattlesnakes in the province. We used ‘R-capture’ (developed in the R statistical package) which ...
... individuals in the population). A third component was to develop a habitat suitability model from occurrence data for the entire range to predict habitat-specific densities and overall population size of rattlesnakes in the province. We used ‘R-capture’ (developed in the R statistical package) which ...
Practice Exam
... a) Developed countries are home to twice as many people as developing countries. b) Developed countries are home to four times as many people as developing countries. c) Developed countries have more rapid population growth rates than developing countries. d) Developed countries have lower per capit ...
... a) Developed countries are home to twice as many people as developing countries. b) Developed countries are home to four times as many people as developing countries. c) Developed countries have more rapid population growth rates than developing countries. d) Developed countries have lower per capit ...
A mini review on theories and measures of interspecific associations
... and communities. So the mechanism of community dynamics and evolution has been an important topic in ecology studies. The core of this mechanism is interspecific associations. Interspecific associations are affected by the environment, and vice versa. So far, a variety of measures and theory for int ...
... and communities. So the mechanism of community dynamics and evolution has been an important topic in ecology studies. The core of this mechanism is interspecific associations. Interspecific associations are affected by the environment, and vice versa. So far, a variety of measures and theory for int ...
Biodiversity action plan
This article is about a conservation biology topic. For other uses of BAP, see BAP (disambiguation).A biodiversity action plan (BAP) is an internationally recognized program addressing threatened species and habitats and is designed to protect and restore biological systems. The original impetus for these plans derives from the 1992 Convention on Biological Diversity (CBD). As of 2009, 191 countries have ratified the CBD, but only a fraction of these have developed substantive BAP documents.The principal elements of a BAP typically include: (a) preparing inventories of biological information for selected species or habitats; (b) assessing the conservation status of species within specified ecosystems; (c) creation of targets for conservation and restoration; and (d) establishing budgets, timelines and institutional partnerships for implementing the BAP.