Null Models in Ecology
... than about 100 m in diameter are saturated with salt water,while a lens of fresh water accumulates beneath larger islands ( 122). As a consequence, sudden ...
... than about 100 m in diameter are saturated with salt water,while a lens of fresh water accumulates beneath larger islands ( 122). As a consequence, sudden ...
Ziv 2000
... for the pattern is lacking. I modified the continuous-time logistic equation of population growth in two ways to allow for such a habitat-based theoretical framework. First, I separated birth rate from death rate. Second, I included two new terms in the equation: (1) an explicit spatial variable for ...
... for the pattern is lacking. I modified the continuous-time logistic equation of population growth in two ways to allow for such a habitat-based theoretical framework. First, I separated birth rate from death rate. Second, I included two new terms in the equation: (1) an explicit spatial variable for ...
2015 AGM Program - Ontario Invasive Plant Council
... provincial Pesticides Act and Ontario Regulation 63/09. A cosmetic pesticides ban was introduced in April 2009 as part of the Ontario government’s plan to reduce public exposure to pesticides. The ban applies to the cosmetic use of pesticides including its use on lawns, gardens, school yards and par ...
... provincial Pesticides Act and Ontario Regulation 63/09. A cosmetic pesticides ban was introduced in April 2009 as part of the Ontario government’s plan to reduce public exposure to pesticides. The ban applies to the cosmetic use of pesticides including its use on lawns, gardens, school yards and par ...
Biology 423 – Exam # 1
... c) converted almost all of the organic matter to water and oxygen d) none of the above 21. Which prediction of the prey choice model was supported by Krebs’s study on great tits? a) never ignore the highest ranking (in terms of profitability) prey b) less profitable prey should be ignored when its p ...
... c) converted almost all of the organic matter to water and oxygen d) none of the above 21. Which prediction of the prey choice model was supported by Krebs’s study on great tits? a) never ignore the highest ranking (in terms of profitability) prey b) less profitable prey should be ignored when its p ...
Kangaroos Threaten One Of Australia`s Last Remaining Original
... These tiny lizards, which weigh just five grams, are so good at camouflaging themselves that for a long time they were thought to be extinct. That was until 1991 when biologist Dr Will Osborne of Institute for Applied Ecology at the University of Canberra happened to push aside a stone with his foo ...
... These tiny lizards, which weigh just five grams, are so good at camouflaging themselves that for a long time they were thought to be extinct. That was until 1991 when biologist Dr Will Osborne of Institute for Applied Ecology at the University of Canberra happened to push aside a stone with his foo ...
Change over Time
... certain point, it may not be able to recover One way that this can happen is if a species becomes isolated, cut off geographically from others of its species Another way is habitat loss, when land area available for a species to live decreases due to human activity ...
... certain point, it may not be able to recover One way that this can happen is if a species becomes isolated, cut off geographically from others of its species Another way is habitat loss, when land area available for a species to live decreases due to human activity ...
Slide - Woodland Park Zoo
... The combination of characteristics that separate reptiles from other vertebrates include skin covered in scales (no feathers or hair and few skin glands), ectothermic body temperature regulation (like amphibians), and amniotic eggs with leathery or hard shells. The amniotic eggs of reptiles, with th ...
... The combination of characteristics that separate reptiles from other vertebrates include skin covered in scales (no feathers or hair and few skin glands), ectothermic body temperature regulation (like amphibians), and amniotic eggs with leathery or hard shells. The amniotic eggs of reptiles, with th ...
The contribution of species richness and composition to bacterial
... decelerating diversity-functioning relationship under some conditions (Fig. 1), so it is not possible to distinguish between the two mechanisms on the basis of the shape of the diversity-function relationship alone. Both of these mechanisms are important in determining the level of ecosystem functio ...
... decelerating diversity-functioning relationship under some conditions (Fig. 1), so it is not possible to distinguish between the two mechanisms on the basis of the shape of the diversity-function relationship alone. Both of these mechanisms are important in determining the level of ecosystem functio ...
global status of oceanic pelagic sharks and rays
... Thus, the final IUCN Red List designation for each species reflects a balance between higher threat categories in heavily fished data-rich regions and lower threat or “Data Deficient” classification in data-poor regions. For example, several species, including bigeye thresher and oceanic whitetip sh ...
... Thus, the final IUCN Red List designation for each species reflects a balance between higher threat categories in heavily fished data-rich regions and lower threat or “Data Deficient” classification in data-poor regions. For example, several species, including bigeye thresher and oceanic whitetip sh ...
Restoration challenges and strategies in Iceland
... covered with fertile Andosols. Soil erosion is still active in many areas and a recent assessment showed that considerable or severe erosion affects about 40% of Iceland (Arnalds et al. 2001). The most severe forms of erosion are sand encroachment, where sand buries vegetated areas resulting in bare ...
... covered with fertile Andosols. Soil erosion is still active in many areas and a recent assessment showed that considerable or severe erosion affects about 40% of Iceland (Arnalds et al. 2001). The most severe forms of erosion are sand encroachment, where sand buries vegetated areas resulting in bare ...
Callaway and Maron 2006 - College of Humanities and Sciences
... pathogens in their homelands, but had connected with non-host-specific soil mutualists in their newly invaded lands. This finding reinforced the general theory that plant pathogens tended to be relatively host specific, whereas mutualists, such as arbuscular mycorrhizae, are not [61,62]. Klironomos’ ...
... pathogens in their homelands, but had connected with non-host-specific soil mutualists in their newly invaded lands. This finding reinforced the general theory that plant pathogens tended to be relatively host specific, whereas mutualists, such as arbuscular mycorrhizae, are not [61,62]. Klironomos’ ...
Biodiversity, Extinction, and Humanity`s Future
... If per capita resource use continues at or near current levels, only a reduction in human N would reduce our species’ environmental impact. One or two billion people using fossil fuels and monopolizing habitat for agricultural production at current rates might not significantly impact the survival o ...
... If per capita resource use continues at or near current levels, only a reduction in human N would reduce our species’ environmental impact. One or two billion people using fossil fuels and monopolizing habitat for agricultural production at current rates might not significantly impact the survival o ...
Long Island Sound Resource Guide
... the maximum high and low tides) are under water during high tide and exposed during low tide. These organisms must be able to tolerate constantly changing conditions: wind, sun, freezing air temperatures in the winter; hot air temperatures in the summer; predation from land animals; rainfall and fre ...
... the maximum high and low tides) are under water during high tide and exposed during low tide. These organisms must be able to tolerate constantly changing conditions: wind, sun, freezing air temperatures in the winter; hot air temperatures in the summer; predation from land animals; rainfall and fre ...
16, Biological Resources
... environmental benefits that ecosystems provide to people Removal of a species from a ...
... environmental benefits that ecosystems provide to people Removal of a species from a ...
PDF - Point Journals
... this has in turn enhanced the life forms that depend upon it. However, fish, reptiles, amphibians and other invertebrate species are not recorded and further investigation need for justification. The most notable taxonomic groups are discussed as: ...
... this has in turn enhanced the life forms that depend upon it. However, fish, reptiles, amphibians and other invertebrate species are not recorded and further investigation need for justification. The most notable taxonomic groups are discussed as: ...
Lesson 8
... Interesting patterns can occur depending on the relationship of the isoclines to each other: • When the isoclines cross with K1 exceeding K2/. , each species limits the other more than it does itself), population trajectories are such that stable equilibrium points exist at both species carrying ca ...
... Interesting patterns can occur depending on the relationship of the isoclines to each other: • When the isoclines cross with K1 exceeding K2/. , each species limits the other more than it does itself), population trajectories are such that stable equilibrium points exist at both species carrying ca ...
Elliott_2003_biological pollution
... macro-organisms? In doing this, we either have to attempt to determine any spare capacity within a community structure for assimilating such organisms or to take the view that no new niches are available or created and so any invasion has, by definition, to have biological repercussions. The assimila ...
... macro-organisms? In doing this, we either have to attempt to determine any spare capacity within a community structure for assimilating such organisms or to take the view that no new niches are available or created and so any invasion has, by definition, to have biological repercussions. The assimila ...
Niche diversification of sessile organisms at Hopkins Marine Station
... We conducted our study on a rocky reef 150 meters offshore of Hopkins Marine Research Station in Monterey, CA (36° 37’ 15.00” N, 121° 54’ 07.00” W). All the surveys for this study were completed on April 10, 2012 between 9am and 12 pm along a permanent underwater cable (marked every 5 meters) that s ...
... We conducted our study on a rocky reef 150 meters offshore of Hopkins Marine Research Station in Monterey, CA (36° 37’ 15.00” N, 121° 54’ 07.00” W). All the surveys for this study were completed on April 10, 2012 between 9am and 12 pm along a permanent underwater cable (marked every 5 meters) that s ...
1998cjb
... seed production, and dispersal. In this view, habitat requirements are not fundamentally different from other complex traits like size or behaviour. We compare the success of aliens and natives in different habitats, consider how these habitat associations contribute to invasiveness, and suggest eco ...
... seed production, and dispersal. In this view, habitat requirements are not fundamentally different from other complex traits like size or behaviour. We compare the success of aliens and natives in different habitats, consider how these habitat associations contribute to invasiveness, and suggest eco ...
factors that influence the “carrying capacity” of game species
... species that can be sustained or survive on a long-term basis within an ecosystem (Helms, 1998). According to Negrutiu (1983) the term that expresses the conditions offered by given hunting land management unit for one hunting species is called carrying capacity. However, using large herbivores as a ...
... species that can be sustained or survive on a long-term basis within an ecosystem (Helms, 1998). According to Negrutiu (1983) the term that expresses the conditions offered by given hunting land management unit for one hunting species is called carrying capacity. However, using large herbivores as a ...
Population Viability Analysis and conservation priorities
... “[f]ish and wildlife habitat shall be managed to maintain viable populations of existing native and desired nonnative vertebrate species in the planning area…In order to insure that viable populations will be maintained, habitat must be provided to support at least a minimum number of reproductive i ...
... “[f]ish and wildlife habitat shall be managed to maintain viable populations of existing native and desired nonnative vertebrate species in the planning area…In order to insure that viable populations will be maintained, habitat must be provided to support at least a minimum number of reproductive i ...
Criticality and unpredictability in macroevolution
... extinction event may take place. In the limit N→`, only when the entropy is maximal @ H max52ln( 21 )# is it possible to find the triggering extinction. The process of replacement works against the increase of entropy, and introduces order in the system by means of similar trophic links. A very info ...
... extinction event may take place. In the limit N→`, only when the entropy is maximal @ H max52ln( 21 )# is it possible to find the triggering extinction. The process of replacement works against the increase of entropy, and introduces order in the system by means of similar trophic links. A very info ...
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.