Master 1.1 and 1.3 Re-wilding North America /Reintroduction of
... plains, and grizzly bears in the West. ...
... plains, and grizzly bears in the West. ...
reef-coral diversity from the late oligocene antigua fm. and
... Republic, Jamaica, Panama, and Trinidad. The reef-coral fauna preserved in the Chattian (Late Oligocene) Antigua Fm. on Antigua in the Leeward Islands is one important component of the Oligocene Caribbean regional fauna (Vaughan 1 9 1 9). New collections from the Antigua Formation comprise 542 colon ...
... Republic, Jamaica, Panama, and Trinidad. The reef-coral fauna preserved in the Chattian (Late Oligocene) Antigua Fm. on Antigua in the Leeward Islands is one important component of the Oligocene Caribbean regional fauna (Vaughan 1 9 1 9). New collections from the Antigua Formation comprise 542 colon ...
Pleistocene fauna (Zoogeography and Plaeontology).
... • The Pleistocene Epoch lasted from about 1.65 million until 10,000 years ago. • During that time numerous types of animals inhabited the area that is now the midwestern United States. Most of these types of animals are no longer found in the area. • Some of these animals are extinct. Others are sti ...
... • The Pleistocene Epoch lasted from about 1.65 million until 10,000 years ago. • During that time numerous types of animals inhabited the area that is now the midwestern United States. Most of these types of animals are no longer found in the area. • Some of these animals are extinct. Others are sti ...
zoogeographical realms
... Aves. Bird fauna has affinities with Oriental Region. There are cuckoos, woodpeckers, hornbill, sunbirds, herons, orioles, birds of prey, storks, parrots, pigeons, fowls, pitta, guinea fowl, hornbill, swallows and bee-eaters. There are 6 exclusive families that include ostrich, secretary bird (Secre ...
... Aves. Bird fauna has affinities with Oriental Region. There are cuckoos, woodpeckers, hornbill, sunbirds, herons, orioles, birds of prey, storks, parrots, pigeons, fowls, pitta, guinea fowl, hornbill, swallows and bee-eaters. There are 6 exclusive families that include ostrich, secretary bird (Secre ...
draft cover letter to science
... most of the last 50 million years, radiated from that continent, and were diverse on it until the late Pleistocene (Table 1,56). Feral horses and burros are widely viewed as ecological pests, but in the context of historical ecology they are plausible analogs for extinct equids (35). Although the e ...
... most of the last 50 million years, radiated from that continent, and were diverse on it until the late Pleistocene (Table 1,56). Feral horses and burros are widely viewed as ecological pests, but in the context of historical ecology they are plausible analogs for extinct equids (35). Although the e ...
Mammals - Tasmania Parks and Wildlife Service
... are under threat from the same processes that have led to their extinction on the mainland — habitat loss and fragmentation of the habitat, predation and competition from introduced animals such as cats, dogs, foxes and ...
... are under threat from the same processes that have led to their extinction on the mainland — habitat loss and fragmentation of the habitat, predation and competition from introduced animals such as cats, dogs, foxes and ...
fyrirlestur 1
... Cretaceous to North America and Eurasisa. • Placental mammals in two groups were dominant: (1) The rodents and primates. (2) The laurasiatheres included bats, carnivores, and early hoofed mammals. - A now-extinct group of small rodent-like animals called Multituberculates (jöxlungar) crossed from As ...
... Cretaceous to North America and Eurasisa. • Placental mammals in two groups were dominant: (1) The rodents and primates. (2) The laurasiatheres included bats, carnivores, and early hoofed mammals. - A now-extinct group of small rodent-like animals called Multituberculates (jöxlungar) crossed from As ...
One elephant at a time
... One objection is that too much time has passed since the Pleistocene for the concept of ecologically analogous species to be valid. Both the species and the environment have undoubtedly ...
... One objection is that too much time has passed since the Pleistocene for the concept of ecologically analogous species to be valid. Both the species and the environment have undoubtedly ...
The Biosphere and Animal Distribution
... Marsupial Evolution Marsupials encountered placental mammals in North America, could not compete, and became extinct. The modern opossums are recent arrivals from South America. ...
... Marsupial Evolution Marsupials encountered placental mammals in North America, could not compete, and became extinct. The modern opossums are recent arrivals from South America. ...
Lecture 09 - Extinction vulnerability
... submerged seafloor are exposed above the sea level. The opposite event, marine transgression, occurs when flooding from the sea covers previously exposed land. Evidence of marine regressions and transgressions occurs throughout the fossil record, and these fluctuations are thought to have caused or ...
... submerged seafloor are exposed above the sea level. The opposite event, marine transgression, occurs when flooding from the sea covers previously exposed land. Evidence of marine regressions and transgressions occurs throughout the fossil record, and these fluctuations are thought to have caused or ...
Mass Extinction
... adapt and survive. Others gradually become extinct in ways that are often caused by natural selection. Several times in Earth's history, however, mass extinctions wiped out entire ecosystems. Food webs collapsed, and this disrupted energy flow through the biosphere. During these events, some biologi ...
... adapt and survive. Others gradually become extinct in ways that are often caused by natural selection. Several times in Earth's history, however, mass extinctions wiped out entire ecosystems. Food webs collapsed, and this disrupted energy flow through the biosphere. During these events, some biologi ...
Cretaceous Period 2 Cretaceous Period 3
... flowering herbs and trees, first appear near the end of the Mesozoic (135 m.y.a.) • The flowering mechanism increased the potential for ...
... flowering herbs and trees, first appear near the end of the Mesozoic (135 m.y.a.) • The flowering mechanism increased the potential for ...
Chapter 37
... Marsupial Evolution Marsupials encountered placental mammals in North America, could not compete, and became extinct. The modern opossums are recent arrivals from South America. ...
... Marsupial Evolution Marsupials encountered placental mammals in North America, could not compete, and became extinct. The modern opossums are recent arrivals from South America. ...
Human Biology 100A – Biome Images
... Savannas (Tropical Grasslands) relatively large areas South America, eastern & south-central Africa, and eastern Australia dominated by grasses and small trees climate with 3 general seasons 1. cool-dry, 2. hot-dry, and 3. warm–wet ~30–60” of precipitation per year (similar to temperate dec ...
... Savannas (Tropical Grasslands) relatively large areas South America, eastern & south-central Africa, and eastern Australia dominated by grasses and small trees climate with 3 general seasons 1. cool-dry, 2. hot-dry, and 3. warm–wet ~30–60” of precipitation per year (similar to temperate dec ...
Pleistocene Megafauna Extinction
... responsible for the death of millions of megafauna across northern latitudes. The climate change hypothesis points to the disruptive and potentially lethal aspects of the postglacier climate. Both of these hypotheses fail to explain all of the phenomena observed during the late Pleistocene period. H ...
... responsible for the death of millions of megafauna across northern latitudes. The climate change hypothesis points to the disruptive and potentially lethal aspects of the postglacier climate. Both of these hypotheses fail to explain all of the phenomena observed during the late Pleistocene period. H ...
CONSERVATION New terminology is gradually entering the
... the resultant populations would act as a buffer against the rapid decline of many species being experienced in Africa and Asia. It would, it is suggested, also offer a refuge from the effects of global climate change that could affect Africa in particular, or economic and political strife all of whi ...
... the resultant populations would act as a buffer against the rapid decline of many species being experienced in Africa and Asia. It would, it is suggested, also offer a refuge from the effects of global climate change that could affect Africa in particular, or economic and political strife all of whi ...
Caribou, wolves and man
... predator. Recruitment and natural adult mortality are approximately equal when wolf numbers are about 6.5 per 1000 km2. Wolf numbers have been reduced north of the treeline in the Nearctic since the 1970s due to hunting facilitated by snowmobile transportation. But south of the tree-line wolf number ...
... predator. Recruitment and natural adult mortality are approximately equal when wolf numbers are about 6.5 per 1000 km2. Wolf numbers have been reduced north of the treeline in the Nearctic since the 1970s due to hunting facilitated by snowmobile transportation. But south of the tree-line wolf number ...
Order Perissodactyla odd-toed ungulates
... accommodate large set of cheek teeth, some have a complete complement of 44 teeth. Front foot has 1, 3 or sometimes 4 digits and the hind foot has 3 digits. Feet are mesaxonic- plane of symmetry of the foot passes through the third digit. ...
... accommodate large set of cheek teeth, some have a complete complement of 44 teeth. Front foot has 1, 3 or sometimes 4 digits and the hind foot has 3 digits. Feet are mesaxonic- plane of symmetry of the foot passes through the third digit. ...
Ungulates and Subungulates - Southeast Missouri State
... • This seems to be an odd grouping of organisms. However, it is not by accident, and does not represent another ‘garbage’ group. • Proboscideans, Hyraxes, and Sirenians are all derived from Condylarthrans, that evolved in the Paleocene about 65mya. ...
... • This seems to be an odd grouping of organisms. However, it is not by accident, and does not represent another ‘garbage’ group. • Proboscideans, Hyraxes, and Sirenians are all derived from Condylarthrans, that evolved in the Paleocene about 65mya. ...
Sixth Extinction
... • Because of limited resources on islands, carrying capacity will be lower, decreasing population sizes and increasing extinction rates. ...
... • Because of limited resources on islands, carrying capacity will be lower, decreasing population sizes and increasing extinction rates. ...
Chapter 37
... Marsupial Evolution Marsupials encountered placental mammals in North America, could not compete, and became extinct. The modern opossums are recent arrivals from South America. ...
... Marsupial Evolution Marsupials encountered placental mammals in North America, could not compete, and became extinct. The modern opossums are recent arrivals from South America. ...
Cenozoic Era - David Bogler Home
... surface is constantly bombarded by large objects which repeatedly melt the whole surface, making life impossible. Archean Era: from 4 to 2 billion years ago (very roughly). Origin of life, all life is single celled bacteria. No oxygen in the atmosphere. Proterozoic Era. 2 billion until 550 million y ...
... surface is constantly bombarded by large objects which repeatedly melt the whole surface, making life impossible. Archean Era: from 4 to 2 billion years ago (very roughly). Origin of life, all life is single celled bacteria. No oxygen in the atmosphere. Proterozoic Era. 2 billion until 550 million y ...
land biomes
... LARGE AREAS IDENTIFIED BY THE PRESENCE OF CHARACTERISTIC PLANTS AND ANIMALS EXAMPLE: DECIDUOUS FOREST MAIN TYPES ARE LAND AND AQUATIC BIOMES ...
... LARGE AREAS IDENTIFIED BY THE PRESENCE OF CHARACTERISTIC PLANTS AND ANIMALS EXAMPLE: DECIDUOUS FOREST MAIN TYPES ARE LAND AND AQUATIC BIOMES ...
Great American Interchange
The Great American Interchange was an important paleozoogeographic event in which land and freshwater fauna migrated from North America via Central America to South America and vice versa, as the volcanic Isthmus of Panama rose up from the sea floor and bridged the formerly separated continents. The migration peaked dramatically around three million years (Ma) ago during the Piacenzian age.It resulted in the joining of the Neotropic (roughly South America) and Nearctic (roughly North America) ecozones definitively to form the Americas. The interchange is visible from observation of both stratigraphy and nature (neontology). Its most dramatic effect is on the zoogeography of mammals but it also gave an opportunity for reptiles, amphibians, arthropods, weak-flying or flightless birds, and even freshwater fish to migrate.The occurrence of the interchange was first discussed in 1876 by the ""father of biogeography"", Alfred Russel Wallace. Wallace had spent 1848–1852 exploring and collecting specimens in the Amazon Basin. Others who made significant contributions to understanding the event in the century that followed include Florentino Ameghino, W. D. Matthew, W. B. Scott, Bryan Patterson, George Gaylord Simpson and S. David Webb.Analogous interchanges occurred earlier in the Cenozoic, when the formerly isolated land masses of India and Africa made contact with Eurasia c. 50 and 30 Ma ago, respectively.