Study Topics 4 - Eric L. Peters` Home Page
... How do the two modern agnathan classes differ in their life histories and ecologies? Why are sea lampreys important in the Great Lakes? What types of sensory organs are found in fishes? Which is unique to fishes? How do freshwater and saltwater bony fishes regulate their osmotic levels? How do elasm ...
... How do the two modern agnathan classes differ in their life histories and ecologies? Why are sea lampreys important in the Great Lakes? What types of sensory organs are found in fishes? Which is unique to fishes? How do freshwater and saltwater bony fishes regulate their osmotic levels? How do elasm ...
Chapter 12 - Jamestown Public Schools
... Mass Extinction- Episode during which large numbers of species become extinct The fossil records show large percentages of the Earth’s organisms were becoming extinct A total of 5 have occurred ...
... Mass Extinction- Episode during which large numbers of species become extinct The fossil records show large percentages of the Earth’s organisms were becoming extinct A total of 5 have occurred ...
How Populations Grow - Brookwood High School
... F. Carrying capacity: maximum population level that can be supported with the resources available. 1. Not only during that organism’s lifetime, but also future populations. ...
... F. Carrying capacity: maximum population level that can be supported with the resources available. 1. Not only during that organism’s lifetime, but also future populations. ...
Dinosaurs and pterosaurs diverged from early amniotes
... reptiles into archosaurs (predecessors of crocodilians and dinosaurs) and lepidosaurs (predecessors of snakes and lizards). These groups remained inconspicuous until the Triassic period when the archosaurs became the dominant terrestrial group due to the extinction of large-bodied anapsids and synap ...
... reptiles into archosaurs (predecessors of crocodilians and dinosaurs) and lepidosaurs (predecessors of snakes and lizards). These groups remained inconspicuous until the Triassic period when the archosaurs became the dominant terrestrial group due to the extinction of large-bodied anapsids and synap ...
Principles of evolution
... Principles of evolution , our heritage and The Origins of Life What was life like a long time ago How did we come into being? ...
... Principles of evolution , our heritage and The Origins of Life What was life like a long time ago How did we come into being? ...
The Prime Movers in Hominid Encephalization
... million years ago show a pronounced increase in body size. This is consistent with Bergmann’s rule, which holds that warm-blooded animals living in cold climates tend to be larger than their counterparts of the same species living in warm climates. The new species also show changes in body proportio ...
... million years ago show a pronounced increase in body size. This is consistent with Bergmann’s rule, which holds that warm-blooded animals living in cold climates tend to be larger than their counterparts of the same species living in warm climates. The new species also show changes in body proportio ...
Extinct
... low 'background rate', usually matched by the rate at which new species appear - resulting in an overall increase in biodiversity Imagine a world without extinction -it would be really crowded!! ...
... low 'background rate', usually matched by the rate at which new species appear - resulting in an overall increase in biodiversity Imagine a world without extinction -it would be really crowded!! ...
4.2.2-.4 Causes of Extinction
... extinction without human intervention. Because of human intervention the Earth's species are dying out at an alarming rate, up to 1,000 times faster than their natural rate of extinction. ...
... extinction without human intervention. Because of human intervention the Earth's species are dying out at an alarming rate, up to 1,000 times faster than their natural rate of extinction. ...
Relating Foraging Behavior to Wildlife Management
... Hughes, JB, GC Daily, and PR Ehrlich. 1997. Population diversity: its extent and extinction. Science 278:689-691. Dobson, AP. Et al. 1997. Geographic distribution of endangered species in the United States. Science 275:550553. Czech, B. and Krausman, PR. 1997. Distribution and causation of spe ...
... Hughes, JB, GC Daily, and PR Ehrlich. 1997. Population diversity: its extent and extinction. Science 278:689-691. Dobson, AP. Et al. 1997. Geographic distribution of endangered species in the United States. Science 275:550553. Czech, B. and Krausman, PR. 1997. Distribution and causation of spe ...
Chapter 4 Notes
... 4-4 How Do Extinction, Speciation, and Human Activities Affect Biodiversity? • Concept 4-4A As environmental conditions change, the balance between formation of new species and extinction of existing ones determines the earth’s biodiversity. • Concept 4-4B Human activities decrease the earth’s biod ...
... 4-4 How Do Extinction, Speciation, and Human Activities Affect Biodiversity? • Concept 4-4A As environmental conditions change, the balance between formation of new species and extinction of existing ones determines the earth’s biodiversity. • Concept 4-4B Human activities decrease the earth’s biod ...
Modern Organisms
... Bacteria are a majority of the world's biomass! Occupy every niche from 20 miles beneath the earth's surface to 20 miles above. Some cause disease, but others are crucial to food production (e.g. cheese) and digestion In ideal conditions, can double every 20 minutes. (1,000,000x population in 5 hour ...
... Bacteria are a majority of the world's biomass! Occupy every niche from 20 miles beneath the earth's surface to 20 miles above. Some cause disease, but others are crucial to food production (e.g. cheese) and digestion In ideal conditions, can double every 20 minutes. (1,000,000x population in 5 hour ...
Largest Eurypterid Found
... Thousands of dinosaur fossils have been found in eastern Spain including 8 different species and 8,000 fossils. They found it while they were constructing a high-speed rail line near the city of Cuenca. This may turn out to be the largest and most diverse dinosaur site in all of Europe to date. It i ...
... Thousands of dinosaur fossils have been found in eastern Spain including 8 different species and 8,000 fossils. They found it while they were constructing a high-speed rail line near the city of Cuenca. This may turn out to be the largest and most diverse dinosaur site in all of Europe to date. It i ...
Characteristics of Mammals
... Modified limbs • Mammals have modified front limbs • Primates have opposable thumbs to grasp objects • Bats have front limbs that are modified into wings • Mammals front limbs are adapted for a variety of methods of food gathering ...
... Modified limbs • Mammals have modified front limbs • Primates have opposable thumbs to grasp objects • Bats have front limbs that are modified into wings • Mammals front limbs are adapted for a variety of methods of food gathering ...
Conservation Biology
... 11. As we study the past 50,000 years worth of information about species’ decline and extinctions around the world A. we see rapid extinctions, especially of the larger animals, not long after humans arrive in an area B. we can make a rough estimate of a population’s risk of a local extinction C. w ...
... 11. As we study the past 50,000 years worth of information about species’ decline and extinctions around the world A. we see rapid extinctions, especially of the larger animals, not long after humans arrive in an area B. we can make a rough estimate of a population’s risk of a local extinction C. w ...
Full PDF Report... - The Rewilding Institute
... study of the fossil record of marine invertebrates shows that species usually last for one million to ten million years. What may cause species to become extinct? Michael Soulè lists the possible factors: rarity (low density); rarity (small, infrequent patches); limited dispersal ability; inbreeding ...
... study of the fossil record of marine invertebrates shows that species usually last for one million to ten million years. What may cause species to become extinct? Michael Soulè lists the possible factors: rarity (low density); rarity (small, infrequent patches); limited dispersal ability; inbreeding ...
Consequences of lost of Biodiversity on Tropical Rainforests
... Francisco Brenes Laurens van Veen ...
... Francisco Brenes Laurens van Veen ...
WHAT YOU SHOULD KNOW ABOUT AMPHIBIANS
... marsupial, monotreme) ? Be able to give animal examples of each. Which one do humans use? What kind of development do mammals have (direct)? What do they do? What is a placenta? How are the testes in mammals different from other vertebrates? Why are they located here? ...
... marsupial, monotreme) ? Be able to give animal examples of each. Which one do humans use? What kind of development do mammals have (direct)? What do they do? What is a placenta? How are the testes in mammals different from other vertebrates? Why are they located here? ...
The Big Kill - impossible2Possible
... that were adapted to eat coarse grasses. It is believed that their long tusks (up to 5 m or 16 ft long) were curved to act as shovels to clear snow from the ground to reach grasses buried beneath (see mammoth) . The woolly mammoth became extinct about 10,000 years ago. It is believed their disappear ...
... that were adapted to eat coarse grasses. It is believed that their long tusks (up to 5 m or 16 ft long) were curved to act as shovels to clear snow from the ground to reach grasses buried beneath (see mammoth) . The woolly mammoth became extinct about 10,000 years ago. It is believed their disappear ...
Ecology ppt.
... Extinction • Extinction of a species occurs when it ceases to exist; may follow environmental change - if the species does not evolve • Evolution and extinction are affected by: – large scale movements of continents – gradual climate changes due to continental drift or orbit changes – rapid clim ...
... Extinction • Extinction of a species occurs when it ceases to exist; may follow environmental change - if the species does not evolve • Evolution and extinction are affected by: – large scale movements of continents – gradual climate changes due to continental drift or orbit changes – rapid clim ...
1. The principle of uniformitarianism is often summarized by saying
... Asian dinosaurs and African mammals C) cichlid fishes of Africa and those in Australia D) fossil and modern hexacorals of the world ...
... Asian dinosaurs and African mammals C) cichlid fishes of Africa and those in Australia D) fossil and modern hexacorals of the world ...
Document
... size that an environment can support This model predicts that a population’s growth rate will be small when the population size is either small or large, and highest when the population is at an intermediate level relative to the carrying capacity. ...
... size that an environment can support This model predicts that a population’s growth rate will be small when the population size is either small or large, and highest when the population is at an intermediate level relative to the carrying capacity. ...
see the key
... 400: the process of unsoluble/non-metabolizable toxins increasing in concentration as they are transferred up the food chain. 500: impacts - rising temperature, rising sea level, species range shifts, species extinctions, modification of growing seasons, changes in precip and temperature patterns, c ...
... 400: the process of unsoluble/non-metabolizable toxins increasing in concentration as they are transferred up the food chain. 500: impacts - rising temperature, rising sea level, species range shifts, species extinctions, modification of growing seasons, changes in precip and temperature patterns, c ...
biodiversity_loss_and_species_extinction
... • Poaching is a controversial issue in African and Asian nations, as the products (tusks, skins, etc.) are the livelihood of some of the poor in these countries. However, poaching also leads to extirpation and sometimes extinction of those species. Compare and contrast the positive and negative asp ...
... • Poaching is a controversial issue in African and Asian nations, as the products (tusks, skins, etc.) are the livelihood of some of the poor in these countries. However, poaching also leads to extirpation and sometimes extinction of those species. Compare and contrast the positive and negative asp ...
MSdoc, 130KB
... Ordovician, Devonian, Permian, Triassic and Cretaceous (extinction of the dinosaurs) geological periods, and seem to have been caused at different times by combinations of climate change, comet or meteorite impact, super-volcanism, marine regression and/or broad ecological restructuring or collapse. ...
... Ordovician, Devonian, Permian, Triassic and Cretaceous (extinction of the dinosaurs) geological periods, and seem to have been caused at different times by combinations of climate change, comet or meteorite impact, super-volcanism, marine regression and/or broad ecological restructuring or collapse. ...
Population growth models - Powerpoint for Oct. 2.
... especially in species with complex life cycles mammals may be pregnant for months before giving birth 3. In nature, K may vary seasonally or with climate 4. In nature, often a few individuals command many matings 5. In nature, there are few barriers preventing dispersal ...
... especially in species with complex life cycles mammals may be pregnant for months before giving birth 3. In nature, K may vary seasonally or with climate 4. In nature, often a few individuals command many matings 5. In nature, there are few barriers preventing dispersal ...
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.