Mass Extinctions
... • On land a total breakdown of terrestrial ecosystems occurred. Most vertebrate and plant groups went extinct. • The Earth came close to a pre-Ediacaran (Late Proterozoic) state – i.e., being nearly devoid of multicellular animal and plant life. • Cause(s) of the extinction are not totally known, bu ...
... • On land a total breakdown of terrestrial ecosystems occurred. Most vertebrate and plant groups went extinct. • The Earth came close to a pre-Ediacaran (Late Proterozoic) state – i.e., being nearly devoid of multicellular animal and plant life. • Cause(s) of the extinction are not totally known, bu ...
Kines 171 Size, Mass, and Movement PowerPoint
... Kinetics • Impulse: product of force and the time over which the force acts; Impulse = Ft ...
... Kinetics • Impulse: product of force and the time over which the force acts; Impulse = Ft ...
Document
... – Radioisotope has it’s own unique rate of decay – Half-life = amount of time it takes for half of the radioisotope to decay ...
... – Radioisotope has it’s own unique rate of decay – Half-life = amount of time it takes for half of the radioisotope to decay ...
Chapter 31 – Aves (Birds)
... Found only in Australia, Tasmania, & New Guinea – evolved after Pangaea split up ...
... Found only in Australia, Tasmania, & New Guinea – evolved after Pangaea split up ...
File - Mrs. LeCompte
... Fossils are used to explore the history of life on Earth. Determining the Age of Fossils 1) The Law of Superposition = younger strata are found on top of older strata ...
... Fossils are used to explore the history of life on Earth. Determining the Age of Fossils 1) The Law of Superposition = younger strata are found on top of older strata ...
Zoology Semester Exam Chapters 26-34
... 50. What is the main function of contour feathers? (they provide lifting force & balance needed for flight) 51. A bird’s respiratory system is more efficient than that of other land vertebrates because:____________________________________________________________. (air flows through the lungs in only ...
... 50. What is the main function of contour feathers? (they provide lifting force & balance needed for flight) 51. A bird’s respiratory system is more efficient than that of other land vertebrates because:____________________________________________________________. (air flows through the lungs in only ...
Extinction and Extirpation
... Extinction: the disappearance of every individual of a species from the entire planet (once extinct they are GONE). Different research comes up with different numbers but it is estimated that 50 – 100 species go extinct every day! Don’t forget, while we tend to think more about animals, any living o ...
... Extinction: the disappearance of every individual of a species from the entire planet (once extinct they are GONE). Different research comes up with different numbers but it is estimated that 50 – 100 species go extinct every day! Don’t forget, while we tend to think more about animals, any living o ...
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 ...
Extinctions
... Extinctions have been occurring constantly at a low 'background rate', usually matched by the rate at which new species appear resulting in an overall increase in biodiversity A world without extinction would be really crowded!! ...
... Extinctions have been occurring constantly at a low 'background rate', usually matched by the rate at which new species appear resulting in an overall increase in biodiversity A world without extinction would be really crowded!! ...
CH 32 Foldable Mammals Internal content
... 1-Hair 2-Ability to nourish young with milk (In female mammals, MAMMARY GLANDS produce milk for the young) 3-Breath air 4-Have 4-chambered hearts 5-Are Endotherms (generate their body heat internally) ...
... 1-Hair 2-Ability to nourish young with milk (In female mammals, MAMMARY GLANDS produce milk for the young) 3-Breath air 4-Have 4-chambered hearts 5-Are Endotherms (generate their body heat internally) ...
Cenozoic Era - David Bogler Home
... a dense undergrowth of shrubs such as tea and laurel, with the addition of ferns and horsetails. ...
... a dense undergrowth of shrubs such as tea and laurel, with the addition of ferns and horsetails. ...
The Marsupial Lion (Thylacoleo carnifex)
... The climate change theory is strengthened by the agile wallaby extinction on Aru Island. The island was isolated from the main land after the last Ice Age. There was no human inhabitant on the island. The change in vegetation was influential fact of the extinction of the species. This is because of ...
... The climate change theory is strengthened by the agile wallaby extinction on Aru Island. The island was isolated from the main land after the last Ice Age. There was no human inhabitant on the island. The change in vegetation was influential fact of the extinction of the species. This is because of ...
122 [Study Guide] 25-2 The History of Life
... After the Permian and Cretaceous mass extinctions, the percentage of predatory marine organisms increased substantially, increasing predation pressure on prey and competition ...
... After the Permian and Cretaceous mass extinctions, the percentage of predatory marine organisms increased substantially, increasing predation pressure on prey and competition ...
Sustaining Biodiversity - species Mass extinction events Levels of
... Mexican grey wolf in American Southwest Reintroduced to N.M., Arizona by USFW Service – (grey wolf in Yellowstone another example) Ecological: Sea otters Reduced numbers in Aleutean Islands lead to increase in sea urchins; kelp forests devastated (photo: www.turtletrack.org) ...
... Mexican grey wolf in American Southwest Reintroduced to N.M., Arizona by USFW Service – (grey wolf in Yellowstone another example) Ecological: Sea otters Reduced numbers in Aleutean Islands lead to increase in sea urchins; kelp forests devastated (photo: www.turtletrack.org) ...
PALEOZOIC
... b. Seeds protected embryo from desiccation c. Store of nutrients for young plant to grow rapidly and overcome adverse ...
... b. Seeds protected embryo from desiccation c. Store of nutrients for young plant to grow rapidly and overcome adverse ...
Nonrenewable Plants and Animals Due to Extinction
... large flocks of these birds fed on fruit and grain farmers were protective of their crops ...
... large flocks of these birds fed on fruit and grain farmers were protective of their crops ...
Exploring the distributions of species in mixed/short grass prairies in
... a) Explore the differences between a cow, a bison and a mammoth. Using allometric equations (e.g., see appendixes in J.H. Peters. 1984. The ecological implications of body size), compute the difference in various life history factors such as metabolic rate, forage requirements, home range, fecundity ...
... a) Explore the differences between a cow, a bison and a mammoth. Using allometric equations (e.g., see appendixes in J.H. Peters. 1984. The ecological implications of body size), compute the difference in various life history factors such as metabolic rate, forage requirements, home range, fecundity ...
CTA-041-Mass Extinction-Earth - The World Federation for Coral
... caused by major asteroid impact; and the wrenching effects of rapid climate change. None of these has really figured in the current biological crisis – not even climate change, which is still only in its early stages. Instead, the extinctions are being driven by the effects of just one single specie ...
... caused by major asteroid impact; and the wrenching effects of rapid climate change. None of these has really figured in the current biological crisis – not even climate change, which is still only in its early stages. Instead, the extinctions are being driven by the effects of just one single specie ...
megafauna extinction - Harvard Computer Society
... Indies are thought to have survived well past their continental counterparts, until the Holocene era (3). The blitzkrieg hypothesis is further supported by the higher prevalence of surviving megafauna in Africa and Eurasia, areas where humans and megafauna co-evolved. Rhinoceroses, elephants and tig ...
... Indies are thought to have survived well past their continental counterparts, until the Holocene era (3). The blitzkrieg hypothesis is further supported by the higher prevalence of surviving megafauna in Africa and Eurasia, areas where humans and megafauna co-evolved. Rhinoceroses, elephants and tig ...
Extinction
... Continents have fully separated Angiosperms have developed and taken over Birds evolve from theropod dinosaurs ...
... Continents have fully separated Angiosperms have developed and taken over Birds evolve from theropod dinosaurs ...
The history of life is punctuated by mass extinction
... About 250 million years ago, all the land masses were joined into one supercontinent, Pangaea, with dramatic impacts on life on land and the sea. • Species that had evolved in isolation now competed. • The total amount of shoreline was reduced and shallow ...
... About 250 million years ago, all the land masses were joined into one supercontinent, Pangaea, with dramatic impacts on life on land and the sea. • Species that had evolved in isolation now competed. • The total amount of shoreline was reduced and shallow ...
Conservation biology
... 74% - 86% of mega fauna thought to have been caused by human hunting Why have African megafauna survived ? Perhaps because animals coevolved with humans there Animals evolved counteradaptations to human predation Island extinction Majority of extinctions have occurred on islands 85 species ...
... 74% - 86% of mega fauna thought to have been caused by human hunting Why have African megafauna survived ? Perhaps because animals coevolved with humans there Animals evolved counteradaptations to human predation Island extinction Majority of extinctions have occurred on islands 85 species ...
“brains” of the cell, the nucleus directs cell activities and contains
... List some factors that can increase the predator population ...
... List some factors that can increase the predator population ...
Extinction
... • Single islands (mountain tops) always have fewer species than areas on the “mainland” of similar size • Because islands are isolated, it will be harder for species to immigrate to them, lowering the rate of immigration. • Because of limited resources on islands, carrying capacity will be lower, de ...
... • Single islands (mountain tops) always have fewer species than areas on the “mainland” of similar size • Because islands are isolated, it will be harder for species to immigrate to them, lowering the rate of immigration. • Because of limited resources on islands, carrying capacity will be lower, de ...
Megafauna
In terrestrial zoology, megafauna (Ancient Greek megas ""large"" + New Latin fauna ""animal"") are large or giant animals. The most common thresholds used are 45 kilograms (100 lb) or 100 kilograms (220 lb). This thus includes many species not popularly thought of as overly large, such as white-tailed deer, red kangaroo, and humans.In practice, the most common usage encountered in academic and popular writing describes land animals roughly larger than a human that are not (solely) domesticated. The term is especially associated with the Pleistocene megafauna – the land animals often larger than modern counterparts considered archetypical of the last ice age, such as mammoths, the majority of which in northern Eurasia, the Americas and Australia became extinct as recently as 10,000–40,000 years ago. It is also commonly used for the largest extant wild land animals, especially elephants, giraffes, hippopotamuses, rhinoceroses, and large bovines. Megafauna may be subcategorized by their trophic position into megaherbivores (e.g., elk), megacarnivores (e.g., lions), and, more rarely, megaomnivores (e.g., bears).Other common uses are for giant aquatic species, especially whales, any larger wild or domesticated land animals such as larger antelope and cattle, as well as numerous dinosaurs and other extinct giant reptilians.The term is also sometimes applied to animals (usually extinct) of great size relative to a more common or surviving type of the animal, for example the 1 m (3 ft) dragonflies of the Carboniferous period.