Lecture 09 - Extinction vulnerability
... million years ago) and Cretaceous–Paleogene extinction event (66 Ma). At the time of the Permian-Triassic extinction, the largest extinction event in the Earth's history, global sea level fell 250 m (820 ft). #6: Late Pleistocene/Anthropocene (about 11,000 ybp) 33 genera went extinct in less than ...
... million years ago) and Cretaceous–Paleogene extinction event (66 Ma). At the time of the Permian-Triassic extinction, the largest extinction event in the Earth's history, global sea level fell 250 m (820 ft). #6: Late Pleistocene/Anthropocene (about 11,000 ybp) 33 genera went extinct in less than ...
Creativity in Students - Bridgewater State University
... Deep Questions • Maybe this is crazy, but if the crowds on the Cape keep getting bigger, will it sink into the ocean? • Of course not! • Well, maybe. ...
... Deep Questions • Maybe this is crazy, but if the crowds on the Cape keep getting bigger, will it sink into the ocean? • Of course not! • Well, maybe. ...
Notebook #8 Extinctions
... extinct in the near future as a result of the negative impact of human activities (clear-cutting, water and air pollution, etc) on the environment. Scientists have evidence to support the claims that human effects on the environment could threaten some biological resources that organisms, including ...
... extinct in the near future as a result of the negative impact of human activities (clear-cutting, water and air pollution, etc) on the environment. Scientists have evidence to support the claims that human effects on the environment could threaten some biological resources that organisms, including ...
Man-Made factors of Extinction
... o Inability to Adapt: cannot change with their changing environment When species become extinct, the opportunity exists for another species to fill that ecological hole (Example) Dinosaurs go extinct, Mammals become dominant Not all extinctions that have occurred naturally throughout Earth’s his ...
... o Inability to Adapt: cannot change with their changing environment When species become extinct, the opportunity exists for another species to fill that ecological hole (Example) Dinosaurs go extinct, Mammals become dominant Not all extinctions that have occurred naturally throughout Earth’s his ...
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.