Food web structure affects the extinction risk of species in ecological
... Here we argue that extinction risk of a particular species not only depends on characteristics of that species (such as body size, generation time or dispersal ability), but also on interactions with and characteristics of other species (Ives and Cardinale, 2004). The reason for this is that the sen ...
... Here we argue that extinction risk of a particular species not only depends on characteristics of that species (such as body size, generation time or dispersal ability), but also on interactions with and characteristics of other species (Ives and Cardinale, 2004). The reason for this is that the sen ...
ON THE ECOLOGY OF INVASIVE SPECIES, EXTINCTION
... Charles Joseph (“Josh”) Donlan was born in the Tidewater area of Virginia. He was lucky enough to be raised in the backwaters of the Chesapeake Bay, where he canoed, crabbed, and swam. At a young age, he was also lucky enough to become employed as the “kid” at several ski and outdoor shops; these ex ...
... Charles Joseph (“Josh”) Donlan was born in the Tidewater area of Virginia. He was lucky enough to be raised in the backwaters of the Chesapeake Bay, where he canoed, crabbed, and swam. At a young age, he was also lucky enough to become employed as the “kid” at several ski and outdoor shops; these ex ...
ON THE ECOLOGY OF INVASIVE SPECIES, EXTINCTION
... Charles Joseph (“Josh”) Donlan was born in the Tidewater area of Virginia. He was lucky enough to be raised in the backwaters of the Chesapeake Bay, where he canoed, crabbed, and swam. At a young age, he was also lucky enough to become employed as the “kid” at several ski and outdoor shops; these ex ...
... Charles Joseph (“Josh”) Donlan was born in the Tidewater area of Virginia. He was lucky enough to be raised in the backwaters of the Chesapeake Bay, where he canoed, crabbed, and swam. At a young age, he was also lucky enough to become employed as the “kid” at several ski and outdoor shops; these ex ...
The interplay between environmental conditions and Allee effects
... Department of Biology, Queen’s University, Kingston, Ontario K7L 3J9 Canada ...
... Department of Biology, Queen’s University, Kingston, Ontario K7L 3J9 Canada ...
pdf - New Zealand Ecological Society
... grand skinks as a metapopulation and to consider local-scale colonisation and extinction events, counting techniques did not explicitly consider incomplete detectability and thus derived only naïve estimates of occupancy and calculated absolute numbers of extinctions and colonisations rather than ra ...
... grand skinks as a metapopulation and to consider local-scale colonisation and extinction events, counting techniques did not explicitly consider incomplete detectability and thus derived only naïve estimates of occupancy and calculated absolute numbers of extinctions and colonisations rather than ra ...
Archeology, deep history, and the human transformation of island
... of the Polynesian islands exhibit striking cases of adaptive radiation and markedly high endemism in plants, insects, terrestrial mollusks, and birds. In Hawai’i, for example, approximately 90% of the flora is endemic at the species level and more than 762 endemic species of land snail are known (mos ...
... of the Polynesian islands exhibit striking cases of adaptive radiation and markedly high endemism in plants, insects, terrestrial mollusks, and birds. In Hawai’i, for example, approximately 90% of the flora is endemic at the species level and more than 762 endemic species of land snail are known (mos ...
56_Lecture_Presentation_PC
... Preserving Biodiversity Hot Spots • A biodiversity hot spot is a relatively small area with a great concentration of endemic species and many endangered and threatened species • Biodiversity hot spots are good choices for nature reserves, but identifying them is not ...
... Preserving Biodiversity Hot Spots • A biodiversity hot spot is a relatively small area with a great concentration of endemic species and many endangered and threatened species • Biodiversity hot spots are good choices for nature reserves, but identifying them is not ...
Ch 56 PPT
... Preserving Biodiversity Hot Spots • A biodiversity hot spot is a relatively small area with a great concentration of endemic species and many endangered and threatened species • Biodiversity hot spots are good choices for nature reserves, but identifying them is not ...
... Preserving Biodiversity Hot Spots • A biodiversity hot spot is a relatively small area with a great concentration of endemic species and many endangered and threatened species • Biodiversity hot spots are good choices for nature reserves, but identifying them is not ...
Conservation biology
... Preserving Biodiversity Hot Spots • A biodiversity hot spot is a relatively small area with a great concentration of endemic species and many endangered and threatened species • Biodiversity hot spots are good choices for nature reserves, but identifying them is not ...
... Preserving Biodiversity Hot Spots • A biodiversity hot spot is a relatively small area with a great concentration of endemic species and many endangered and threatened species • Biodiversity hot spots are good choices for nature reserves, but identifying them is not ...
Ecological communities in variable environments : dynamics
... At the population level, it is assumed that Wootton 1994; Laska & Wootton 1998), the presence of interspecific interactions in- proxies for, e.g., the relative competitive abilfluences the per capita growth rate (births ity of different species (Fowler 2005; I), and deaths) of species (Royama 1992). ...
... At the population level, it is assumed that Wootton 1994; Laska & Wootton 1998), the presence of interspecific interactions in- proxies for, e.g., the relative competitive abilfluences the per capita growth rate (births ity of different species (Fowler 2005; I), and deaths) of species (Royama 1992). ...
56_Lecture_Presentation
... Preserving Biodiversity Hot Spots • A biodiversity hot spot is a relatively small area with a great concentration of endemic species and many endangered and threatened species • Biodiversity hot spots are good choices for nature reserves, but identifying them is not ...
... Preserving Biodiversity Hot Spots • A biodiversity hot spot is a relatively small area with a great concentration of endemic species and many endangered and threatened species • Biodiversity hot spots are good choices for nature reserves, but identifying them is not ...
Infectious disease and primate conservation
... from Ebola. One concern is that it would be more difficult to convince wildlife managers to invest in controlling the very real threats that they can effectively mitigate—such as human respiratory pathogens transmitting to wildlife—if they are concerned that Ebola may wipe out their entire ape popul ...
... from Ebola. One concern is that it would be more difficult to convince wildlife managers to invest in controlling the very real threats that they can effectively mitigate—such as human respiratory pathogens transmitting to wildlife—if they are concerned that Ebola may wipe out their entire ape popul ...
Colonization in metapopulations: a review of
... The Richter-Dyn/Goel model is quite similar to the MacArthur/Wilson model, but has a logistic density dependence. The predictions from this model are also similar, including the existence of a critical population size, above which extinction is highly improbable. This critical population size is the ...
... The Richter-Dyn/Goel model is quite similar to the MacArthur/Wilson model, but has a logistic density dependence. The predictions from this model are also similar, including the existence of a critical population size, above which extinction is highly improbable. This critical population size is the ...
Chapter 50 Conservation Biology
... – Biodiversity is desirable for the biosphere. – Extinctions due to human actions are undesirable. – Ecosystem interactions supporting biodiversity are desirable. – Biodiversity brought about by evolutionary change has value in and of itself. Mader: Biology 8th Ed. ...
... – Biodiversity is desirable for the biosphere. – Extinctions due to human actions are undesirable. – Ecosystem interactions supporting biodiversity are desirable. – Biodiversity brought about by evolutionary change has value in and of itself. Mader: Biology 8th Ed. ...
Archeology, deep history, and the human transformation of island
... island ecosystems, transforming these into often highly managed and human dominated landscapes. In short, the Polynesian islands are model systems for the transition from the Holocene to the Anthropocene at different scales and under differing environmental parameters (Vitousek, 2002). Recognizing t ...
... island ecosystems, transforming these into often highly managed and human dominated landscapes. In short, the Polynesian islands are model systems for the transition from the Holocene to the Anthropocene at different scales and under differing environmental parameters (Vitousek, 2002). Recognizing t ...
Top-down and bottom-up control of large herbivore populations: a
... The human factor on top-down and bottom-up control in animal communities a). Top-down control: human influence Recent studies suggest that humans precipitated the extinction of large carnivores and herbivores in many parts of the globe through combined direct (hunting) and perhaps indirect impacts, ...
... The human factor on top-down and bottom-up control in animal communities a). Top-down control: human influence Recent studies suggest that humans precipitated the extinction of large carnivores and herbivores in many parts of the globe through combined direct (hunting) and perhaps indirect impacts, ...
FAQs On The Monarch Butterfly Endangered Species Act
... 20th century despite the fact that in the late 19th century it was one of the most abundant birds in the country, with flocks so numerous that by some accounts they darkened the sky for up to 14 hours at a time. Similarly, the Rocky Mountain grasshopper once ranged throughout western North America a ...
... 20th century despite the fact that in the late 19th century it was one of the most abundant birds in the country, with flocks so numerous that by some accounts they darkened the sky for up to 14 hours at a time. Similarly, the Rocky Mountain grasshopper once ranged throughout western North America a ...
FAQs On The Monarch Butterfly Endangered Species Act Petition
... 20th century despite the fact that in the late 19th century it was one of the most abundant birds in the country, with flocks so numerous that by some accounts they darkened the sky for up to 14 hours at a time. Similarly, the Rocky Mountain grasshopper once ranged throughout western North America a ...
... 20th century despite the fact that in the late 19th century it was one of the most abundant birds in the country, with flocks so numerous that by some accounts they darkened the sky for up to 14 hours at a time. Similarly, the Rocky Mountain grasshopper once ranged throughout western North America a ...
PDF, 787 KB
... been perturbed within the last decades should be performed Emergence: Time delayed extinction of species after environmental perturbation will cause numerous extinctions in the near future, if counteractions are not immediately started. Problem: The biodiversity in the EU is threatened to an unfore ...
... been perturbed within the last decades should be performed Emergence: Time delayed extinction of species after environmental perturbation will cause numerous extinctions in the near future, if counteractions are not immediately started. Problem: The biodiversity in the EU is threatened to an unfore ...
Impacts of climate change on the future of biodiversity
... or self. The first two axes correspond to easily observable and well documented responses to global warming (Parmesan 2006). ÔSelfÕ corresponds to less visible physiological and behavioural changes that allow species to adapt to the new climatic conditions in the same spatial and temporal frame. Spa ...
... or self. The first two axes correspond to easily observable and well documented responses to global warming (Parmesan 2006). ÔSelfÕ corresponds to less visible physiological and behavioural changes that allow species to adapt to the new climatic conditions in the same spatial and temporal frame. Spa ...
Chapter 12
... in the Cambrian marine ecosystem, any mechanism or feature that protected an animal would certainly be advantageous and confer an adaptive advantage to the organism ...
... in the Cambrian marine ecosystem, any mechanism or feature that protected an animal would certainly be advantageous and confer an adaptive advantage to the organism ...
Predictors of species sensitivity to fragmentation
... chaotic dynamics have usually failed (Hassell et al. 1976). The prediction may also fail if populations in habitats with different reproductive quality (Liu 1993) or carrying capacity (Henle et al. 2004 (this issue)) are compared. Although occupancy patterns of habitat patches and islands of differe ...
... chaotic dynamics have usually failed (Hassell et al. 1976). The prediction may also fail if populations in habitats with different reproductive quality (Liu 1993) or carrying capacity (Henle et al. 2004 (this issue)) are compared. Although occupancy patterns of habitat patches and islands of differe ...
File - Cook Biology
... destruction lead to loss of biodiversity • For example – In Wisconsin, prairie occupies <0.1% of its original area – About 93% of coral reefs have been damaged by human activities Copyright © 2008 Pearson Education, Inc., publishing as Pearson Benjamin Cummings ...
... destruction lead to loss of biodiversity • For example – In Wisconsin, prairie occupies <0.1% of its original area – About 93% of coral reefs have been damaged by human activities Copyright © 2008 Pearson Education, Inc., publishing as Pearson Benjamin Cummings ...
Document
... Preserving Biodiversity Hot Spots • A biodiversity hot spot is a relatively small area with a great concentration of endemic species and many endangered and threatened species • Biodiversity hot spots are good choices for nature reserves, but identifying them is not ...
... Preserving Biodiversity Hot Spots • A biodiversity hot spot is a relatively small area with a great concentration of endemic species and many endangered and threatened species • Biodiversity hot spots are good choices for nature reserves, but identifying them is not ...
Holocene extinction
The Holocene extinction, sometimes called the Sixth Extinction, is a name proposed to describe the currently ongoing extinction event of species during the present Holocene epoch (since around 10,000 BCE) mainly due to human activity. The large number of extinctions span numerous families of plants and animals including mammals, birds, amphibians, reptiles and arthropods. Although 875 extinctions occurring between 1500 and 2009 have been documented by the International Union for Conservation of Nature and Natural Resources, the vast majority are undocumented. According to the species-area theory and based on upper-bound estimating, the present rate of extinction may be up to 140,000 species per year.The Holocene extinction includes the disappearance of large mammals known as megafauna, starting between 9,000 and 13,000 years ago, the end of the last Ice Age. This may have been due to the extinction of the mammoths whose habits had maintained grasslands which became birch forests without them. The new forest and the resulting forest fires may have induced climate change. Such disappearances might be the result of the proliferation of modern humans. These extinctions, occurring near the Pleistocene–Holocene boundary, are sometimes referred to as the Quaternary extinction event. The Holocene extinction continues into the 21st century.There is no general agreement on whether to consider this as part of the Quaternary extinction event, or as a distinct event resulting from human-caused changes. Only during the most recent parts of the extinction have plants also suffered large losses. Overall, the Holocene extinction can be characterized by the human impact on the environment.