Ch 11: Wolves
... It has also been estimated that the average pre-human extinction rate was 0.1 extinction per million species per year. The current extinction rate is approximately 100 extinctions per million species per year, or 1,000 times higher than natural background rates. They also predict that future rates m ...
... It has also been estimated that the average pre-human extinction rate was 0.1 extinction per million species per year. The current extinction rate is approximately 100 extinctions per million species per year, or 1,000 times higher than natural background rates. They also predict that future rates m ...
BCB322: Landscape Ecology
... Island biogeography theory • Developed originally in 1963 by MacArthur & Wilson, & further developed by these & others • Influenced understanding of spatial influences on organisms • For a while, it was the principle design paradigm for conservation reserves • “The number of species on an island wi ...
... Island biogeography theory • Developed originally in 1963 by MacArthur & Wilson, & further developed by these & others • Influenced understanding of spatial influences on organisms • For a while, it was the principle design paradigm for conservation reserves • “The number of species on an island wi ...
Macroevolution
... Macroevolution - Definition • Changes that occur at or above the level of species • Describes the processes and patterns of originations, adaptations and extinctions • Reconstructs climates and environments in which species lived ...
... Macroevolution - Definition • Changes that occur at or above the level of species • Describes the processes and patterns of originations, adaptations and extinctions • Reconstructs climates and environments in which species lived ...
Section 2 Notes Biodiversity at Risk
... relatively short period of time is called a mass extinction. Earth has experienced several mass extinctions, each probably caused by a global change in climate. It takes millions of years for biodiversity to rebound after a mass extinction. ...
... relatively short period of time is called a mass extinction. Earth has experienced several mass extinctions, each probably caused by a global change in climate. It takes millions of years for biodiversity to rebound after a mass extinction. ...
Document
... – predators eat contaminated prey – pollution accumulates at each stage of the food chain • Top consumers, including humans, are most affected. ...
... – predators eat contaminated prey – pollution accumulates at each stage of the food chain • Top consumers, including humans, are most affected. ...
Diversity, Rainforests and extinctions
... Cretaceous–Tertiary extinction event – 65.5 Million years ago. About 17% of all families, 50% of all genera and 75% of species became extinct. In the seas it reduced the percentage of sessile animals to about 33%. The event was severe with a significant amount of variability in the rate of extinctio ...
... Cretaceous–Tertiary extinction event – 65.5 Million years ago. About 17% of all families, 50% of all genera and 75% of species became extinct. In the seas it reduced the percentage of sessile animals to about 33%. The event was severe with a significant amount of variability in the rate of extinctio ...
Study Guide! - Faculty Web Directory
... Mojave Desert - location (e.g. a Park or place you could visit), climate, dominant & indicator plants (big, “tree” yuccas) & animals Sonoran Desert - location (e.g. a Park or place could visit), climate, dominant & indicator plants (cacti) & animals; importance of saguaro cactus as keystone species ...
... Mojave Desert - location (e.g. a Park or place you could visit), climate, dominant & indicator plants (big, “tree” yuccas) & animals Sonoran Desert - location (e.g. a Park or place could visit), climate, dominant & indicator plants (cacti) & animals; importance of saguaro cactus as keystone species ...
Activity 5 Mass Extinction and Fossil Records
... are called the Mesozoic and Cenozoic. Dinosaurs were prevalent during the Mesozoic Era and extinct during the Cenozoic Era.The last segment of the Mesozoic Era is called the Cretaceous Period.The first segment of the Cenozoic Era is called the Tertiary Period.The abbreviation for the boundary betwee ...
... are called the Mesozoic and Cenozoic. Dinosaurs were prevalent during the Mesozoic Era and extinct during the Cenozoic Era.The last segment of the Mesozoic Era is called the Cretaceous Period.The first segment of the Cenozoic Era is called the Tertiary Period.The abbreviation for the boundary betwee ...
Slide
... 5) Predation? - possible cause for an interesting extinction of large Pleistocene mammals Two ideas for the Pleistocene mammals example: 1.) Changing climate Problems? Too slow. a.) many large animals went extinct and no plants b.) mammals should not be so heavily impacted WHY? c.) glacial retreat s ...
... 5) Predation? - possible cause for an interesting extinction of large Pleistocene mammals Two ideas for the Pleistocene mammals example: 1.) Changing climate Problems? Too slow. a.) many large animals went extinct and no plants b.) mammals should not be so heavily impacted WHY? c.) glacial retreat s ...
Current Extinction Rates Versus Mass Extinction Events Current
... its 6th Mass-Extinction Event. Latin Post. Retrieved from http://www.latinpost.com/articles/61058/20150621/scientists-claim-the-world-hasentered-into-its-6th-mass-extinction-event.htm ...
... its 6th Mass-Extinction Event. Latin Post. Retrieved from http://www.latinpost.com/articles/61058/20150621/scientists-claim-the-world-hasentered-into-its-6th-mass-extinction-event.htm ...
Biodiversity and risk patterns of freshwater megafauna Global
... Biodiversity and risk patterns of freshwater megafauna Fengzhi He Your picture Significance: Coupled with the susceptibility of megafauna to anthropogenic threats and the fact that freshwaters habitats have experienced extensive degradation because of human activities, it can be hypothesised that fr ...
... Biodiversity and risk patterns of freshwater megafauna Fengzhi He Your picture Significance: Coupled with the susceptibility of megafauna to anthropogenic threats and the fact that freshwaters habitats have experienced extensive degradation because of human activities, it can be hypothesised that fr ...
Chapter 11
... 14. Of the reasons for extinction described in “HIPPO” which is responsible for most extinctions? 15. Define habitat fragmentation. 16. Why are Indonesian tropical forests being cleared? 17. What are the two reasons for loss of seabirds and other water fowl? 18. What is killing migrating birds? 19. ...
... 14. Of the reasons for extinction described in “HIPPO” which is responsible for most extinctions? 15. Define habitat fragmentation. 16. Why are Indonesian tropical forests being cleared? 17. What are the two reasons for loss of seabirds and other water fowl? 18. What is killing migrating birds? 19. ...
Population Dynamics
... December to August, but this species is also known to breed throughout the year (2) (3). The gestation period lasts only 32 days, and the young are born in the underground burrow (1) (5) (8). There are usually up to 3 offspring per litter, and the young are relatively well developed at birth, weighi ...
... December to August, but this species is also known to breed throughout the year (2) (3). The gestation period lasts only 32 days, and the young are born in the underground burrow (1) (5) (8). There are usually up to 3 offspring per litter, and the young are relatively well developed at birth, weighi ...
Patterns of Biological Invasions
... will examine which factors promote biological invasions. Colonisation by IAS are often accompanied by the extinction of native species, especially on islands. Extinction of species and alteration of whole ecosystems are the worst impacts of biological invasions. The presentation will address the ...
... will examine which factors promote biological invasions. Colonisation by IAS are often accompanied by the extinction of native species, especially on islands. Extinction of species and alteration of whole ecosystems are the worst impacts of biological invasions. The presentation will address the ...
full text pdf
... linked with another huge outburst of volcanism. The fifth extinction (Cretaceous-Tertiary, 65 million years ago) killed off the dinosaurs and much else. Probably an asteroid impact on Mexico did the damage (ALROY, 2008; BARNOSKY ET AL., 2011). And now currently ongoing we observed Holocene extinctio ...
... linked with another huge outburst of volcanism. The fifth extinction (Cretaceous-Tertiary, 65 million years ago) killed off the dinosaurs and much else. Probably an asteroid impact on Mexico did the damage (ALROY, 2008; BARNOSKY ET AL., 2011). And now currently ongoing we observed Holocene extinctio ...
Animals in danger of extintion in the Portuguese
... This species usually occurs in open areas and forest clearings, and only in granitic substrates The flowering period is very short, from February to April depending on weather ...
... This species usually occurs in open areas and forest clearings, and only in granitic substrates The flowering period is very short, from February to April depending on weather ...
Clicker Review
... The case study of the endangered vultures ultimately leading to an increase in humans affected by rabies is an example of… A. unsolved mysteries B. unexpected scientific connections C. bioaccumulation D. natural capital [Default] [MC Any] [MC All] ...
... The case study of the endangered vultures ultimately leading to an increase in humans affected by rabies is an example of… A. unsolved mysteries B. unexpected scientific connections C. bioaccumulation D. natural capital [Default] [MC Any] [MC All] ...
Exploring the distributions of species in mixed/short grass prairies in
... size), compute the difference in various life history factors such as metabolic rate, forage requirements, home range, fecundity, population size. Based on these computations, what might be some of the likely consequences of the time transgressive shift in the body size of the largest herbivores in ...
... size), compute the difference in various life history factors such as metabolic rate, forage requirements, home range, fecundity, population size. Based on these computations, what might be some of the likely consequences of the time transgressive shift in the body size of the largest herbivores in ...
THE ADAPTIVE EVOLUTION OF EXTINCTION Guest editors
... Biology Letters. After a long illness, Niclas passed away during the preparation of this symposium. Even as a youth, Niclas took pleasure in natural history and field biology. He was especially interested in birds and in understanding how global climate change was likely to affect their breeding, mo ...
... Biology Letters. After a long illness, Niclas passed away during the preparation of this symposium. Even as a youth, Niclas took pleasure in natural history and field biology. He was especially interested in birds and in understanding how global climate change was likely to affect their breeding, mo ...
FirstExamTextGuide
... 10.3 There has been a debate in the literature essentially saying it is silly to calculate extinction rates from birds on islands because they are the exceptions-they are super likely to go extinct in these areas because once people get there they have nowhere to go. This section tries to raise some ...
... 10.3 There has been a debate in the literature essentially saying it is silly to calculate extinction rates from birds on islands because they are the exceptions-they are super likely to go extinct in these areas because once people get there they have nowhere to go. This section tries to raise some ...
Species Concept
... habitat loss. • Organisms with highly specialized habitat needs may avoid competition, but risk extinction if their habitat is threatened. ...
... habitat loss. • Organisms with highly specialized habitat needs may avoid competition, but risk extinction if their habitat is threatened. ...
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.