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. ...
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] ...
Biodiversity - Madison County Schools
... keystone species are species that influence the survival of many other species in an ecosystem 1800 sea otter extinction ...
... keystone species are species that influence the survival of many other species in an ecosystem 1800 sea otter extinction ...
Keystone species
... authorizes the U.S. Fish and Wildlife Service to list species as threatened or endangered & prohibits harming these species. Trading these species is also illegal. also authorizes the government to purchase habitat that is critical to the species. ...
... authorizes the U.S. Fish and Wildlife Service to list species as threatened or endangered & prohibits harming these species. Trading these species is also illegal. also authorizes the government to purchase habitat that is critical to the species. ...
Loss of Biodiversity
... Humans are causing extinctions at a tremendous rate. • ~100 times faster than expected without human activity • parallels or exceeds previous mass extinction events Why is the loss of biodiversity a crisis? • economic value of biodiversity lost or threatened • “ecological services” lost or threatene ...
... Humans are causing extinctions at a tremendous rate. • ~100 times faster than expected without human activity • parallels or exceeds previous mass extinction events Why is the loss of biodiversity a crisis? • economic value of biodiversity lost or threatened • “ecological services” lost or threatene ...
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 ...
BCB322: Landscape Ecology
... follow IB predictions unless predatory lizards are present. Otherwise predation drives extinction rates (Toft & Schoener, 1983) ...
... follow IB predictions unless predatory lizards are present. Otherwise predation drives extinction rates (Toft & Schoener, 1983) ...
Threatened species
... More likely to withstand droughts, disease, climate change, nutrient shortages Higher number of producers lead to a higher biomass which leads to more carbon and nitrogen cycling ...
... More likely to withstand droughts, disease, climate change, nutrient shortages Higher number of producers lead to a higher biomass which leads to more carbon and nitrogen cycling ...
The history of life is punctuated by mass extinction
... more severe and temporally compacted extinctions in North America. • Less severe global effect would have developed more slowly after the initial catastrophe, consistent with variable rates of extinction around the globe. ...
... more severe and temporally compacted extinctions in North America. • Less severe global effect would have developed more slowly after the initial catastrophe, consistent with variable rates of extinction around the globe. ...
Biodiversity
... In the early 1900’s the American Passenger pigeon was Legally hunted to extinction. Similarly, the American buffalo Was nearly hunted to extinction In the 1800’s. ...
... In the early 1900’s the American Passenger pigeon was Legally hunted to extinction. Similarly, the American buffalo Was nearly hunted to extinction In the 1800’s. ...
Mass Extinctions
... genera suffered very slightly higher rates of extinction. * Extinction did not select against genera because of their environmental breadth, number of regional occurrences (a proxy for relative abundance), species diversity, or body size. • Extinction did strongly select against genera with narrow g ...
... genera suffered very slightly higher rates of extinction. * Extinction did not select against genera because of their environmental breadth, number of regional occurrences (a proxy for relative abundance), species diversity, or body size. • Extinction did strongly select against genera with narrow g ...
Time Number of species
... Major climate changes also surround the end-Cretaceous extinction (K-T), possibly resulting from a massive asteroid hitting the earth. (A buried crater has been detected in the Yucatan peninsula of Mexico with a diameter of 180 km!) ...
... Major climate changes also surround the end-Cretaceous extinction (K-T), possibly resulting from a massive asteroid hitting the earth. (A buried crater has been detected in the Yucatan peninsula of Mexico with a diameter of 180 km!) ...
Animals in danger of extintion in the Portuguese
... This is an annual plant that grows in the region of Beja, Alentejo and blooms in March and April. Occurs preferentially in grain fields of wheat and oats with low human intervention in under-covered with olive trees or riding the berms and alleys. CAUSES OF EXTINCTION: Use of herbicides as a result ...
... This is an annual plant that grows in the region of Beja, Alentejo and blooms in March and April. Occurs preferentially in grain fields of wheat and oats with low human intervention in under-covered with olive trees or riding the berms and alleys. CAUSES OF EXTINCTION: Use of herbicides as a result ...
Text – Threats to Biodiversity
... normal range. In the last 500 years, human activity has forced over 800 species into extinction, and there are currently 41,415 endangered species on the planet. Examples - A Snapshot of Endangered Species of Africa: Black Rhino - The black rhino has not fared so well. As recently as 1970, an estima ...
... normal range. In the last 500 years, human activity has forced over 800 species into extinction, and there are currently 41,415 endangered species on the planet. Examples - A Snapshot of Endangered Species of Africa: Black Rhino - The black rhino has not fared so well. As recently as 1970, an estima ...
Edge effects
... • Proposed rates of extinction on islands would be determined mainly by island size. – LG near islands will support highest number. – SM far islands will support lowest number. – SM near and LG far will support intermediate number. ...
... • Proposed rates of extinction on islands would be determined mainly by island size. – LG near islands will support highest number. – SM far islands will support lowest number. – SM near and LG far will support intermediate number. ...
BIODIVERSITY
... exotic species into an ecosystem can threaten biodiversity Introduced into new habitats, these organisms often become invasive species that reproduce rapidly. ...
... exotic species into an ecosystem can threaten biodiversity Introduced into new habitats, these organisms often become invasive species that reproduce rapidly. ...
Conservation Biology and Restoration Ecology
... • Our innate sense of connection to nature may eventually motivate a realignment of our environmental ...
... • Our innate sense of connection to nature may eventually motivate a realignment of our environmental ...
Extinction - WordPress.com
... • As humans we are pushing for more resources to make our lives easier ...
... • As humans we are pushing for more resources to make our lives easier ...
Stories from the Fossil Record Evidence Chart Key
... The leaf edges tell us if the climate where the plant grew was generally cool or warm. ...
... The leaf edges tell us if the climate where the plant grew was generally cool or warm. ...
Evolution and Biodiversity
... biodiversity and results in ecosystem collapse. Biodiversity variety of different species (species diversity), genetic variability among individuals within each species (genetic diversity), variety of ecosystems (ecological diversity), and functions such as energy flow and matter cycling needed for ...
... biodiversity and results in ecosystem collapse. Biodiversity variety of different species (species diversity), genetic variability among individuals within each species (genetic diversity), variety of ecosystems (ecological diversity), and functions such as energy flow and matter cycling needed for ...
Biological Diversity
... •Mainly effected animals rather than plants Possible causes: •Climate change •Flood basalt eruptions •Impact event ...
... •Mainly effected animals rather than plants Possible causes: •Climate change •Flood basalt eruptions •Impact event ...
Amphibian decline case study
... Frog populations that had once been abundant were now decreasing or entirely gone In 2005, evidence that 43% of amphibian species experienced decreases in population size 1/3rd are threatened with extinction Number of threatened species Why worry about amphibian declines? Many species have d ...
... Frog populations that had once been abundant were now decreasing or entirely gone In 2005, evidence that 43% of amphibian species experienced decreases in population size 1/3rd are threatened with extinction Number of threatened species Why worry about amphibian declines? Many species have d ...