GLOSSARY Alien species Species introduced deliberately or
... The use of components of biological diversity in a way and at a rate that does not lead to the long-term decline of biological diversity, thereby maintaining its potential to meet the needs and aspirations of present and future generations (Source: Convention on Biological Diversity). ...
... The use of components of biological diversity in a way and at a rate that does not lead to the long-term decline of biological diversity, thereby maintaining its potential to meet the needs and aspirations of present and future generations (Source: Convention on Biological Diversity). ...
Amphibian species facing extinction, new study warns
... century — is being caused by factors that include deforestation, pollution, habitat loss and climate change, the researchers said. But they added that the phenomenon also tells a disturbing tale of broad environmental degradation that may ultimately threaten humans and other animals as well. Amphibi ...
... century — is being caused by factors that include deforestation, pollution, habitat loss and climate change, the researchers said. But they added that the phenomenon also tells a disturbing tale of broad environmental degradation that may ultimately threaten humans and other animals as well. Amphibi ...
Biodiversity - Mr. Fouts' Home Page
... • Water pollution: point and non-point sources – Biomagnification: heavy metals and persistent organic pollutants (POP’s) are difficult to metabolize and/or detoxify concentrate in livers, fats of top predators (ex. DDT with egg-thinning effects endangered bald eagles and pelicans); others weake ...
... • Water pollution: point and non-point sources – Biomagnification: heavy metals and persistent organic pollutants (POP’s) are difficult to metabolize and/or detoxify concentrate in livers, fats of top predators (ex. DDT with egg-thinning effects endangered bald eagles and pelicans); others weake ...
Introduction to the Earth
... especially in loss of biological diversity (biodiversity) Rapid expansion of urban and suburban areas decreases available habitat Deforestation Expansion of farming into marginal environments Land use that is insensitive to long term changes • Salinization ...
... especially in loss of biological diversity (biodiversity) Rapid expansion of urban and suburban areas decreases available habitat Deforestation Expansion of farming into marginal environments Land use that is insensitive to long term changes • Salinization ...
SAES CH9
... “There is a strong link between the health of forests and the health of humans. If people understand that a rainforest might contain the best cures for diseases that plague us, they will care a whole lot more about saving it.” ...
... “There is a strong link between the health of forests and the health of humans. If people understand that a rainforest might contain the best cures for diseases that plague us, they will care a whole lot more about saving it.” ...
Chap 5,6 Jeopardy - Lindbergh Schools
... 2 factors that caused human growth rate to become exponential. ...
... 2 factors that caused human growth rate to become exponential. ...
Lecture 17: Biogeography
... • Pleistocene glaciations • Many taxa survived in refugia & speciated • e.g. western & eastern diamondback rattler ...
... • Pleistocene glaciations • Many taxa survived in refugia & speciated • e.g. western & eastern diamondback rattler ...
Chapter 43 Global Ecology and Conservation Biology Overview
... Introduced species are those that humans move from native locations to new geographic regions Without their native predators, parasites, and pathogens, introduced species may spread rapidly Introduced species that gain a foothold in a new habitat usually _______________ their adopted community Human ...
... Introduced species are those that humans move from native locations to new geographic regions Without their native predators, parasites, and pathogens, introduced species may spread rapidly Introduced species that gain a foothold in a new habitat usually _______________ their adopted community Human ...
Chap. 2 Global Biodiversity patterns and processes
... C Small and declining population. (Mature individuals, plus continuing decline either over a specific rate in short time periods, or with specific population structure or extreme fluctuations.) <250 ...
... C Small and declining population. (Mature individuals, plus continuing decline either over a specific rate in short time periods, or with specific population structure or extreme fluctuations.) <250 ...
Part III: Results and Concern for the Cost of Solutions
... We’ve been looking at how competition for limiting resources can cause competitive exclusion of native species, potentially leading to their local extinction. That’s why most park management officials and conservation biologists believe exotic invasive species like this Phragmites australis should ...
... We’ve been looking at how competition for limiting resources can cause competitive exclusion of native species, potentially leading to their local extinction. That’s why most park management officials and conservation biologists believe exotic invasive species like this Phragmites australis should ...
How Introduced Species Affect Ecosystems
... • Many introduced species help or at least do not harm the ecosystem they come to. • However, some take over the habitat of the native species. These are called invasive species. • Invasive species often have high reproduction rates, are aggressive competitors, and lack natural predators. ...
... • Many introduced species help or at least do not harm the ecosystem they come to. • However, some take over the habitat of the native species. These are called invasive species. • Invasive species often have high reproduction rates, are aggressive competitors, and lack natural predators. ...
Frog species skips tadpole stage
... without limbs, worm like) and anura (those without tails). And scientists from the Indian Institute of Science have been exploring the bio-diversity in the Western Ghats, stretching right from Surat (21 degree North) to Kanyakumari (8 degree North). Studying the different amphibian species in the re ...
... without limbs, worm like) and anura (those without tails). And scientists from the Indian Institute of Science have been exploring the bio-diversity in the Western Ghats, stretching right from Surat (21 degree North) to Kanyakumari (8 degree North). Studying the different amphibian species in the re ...
Introduction to Ecology
... There was a rapid increase after the industrial revolution (better hygiene, transportation, vaccinations, food harvest and shipment) ...
... There was a rapid increase after the industrial revolution (better hygiene, transportation, vaccinations, food harvest and shipment) ...
Clicker Review
... The extinction of many species in a relatively short period of geological time is called a ...
... The extinction of many species in a relatively short period of geological time is called a ...
Ch. 54 Community Ecology 9e F12(1).
... Soon after fire. As this photo taken soon after the fire shows, the burn left a patchy landscape. Note the unburned trees in the distance. ...
... Soon after fire. As this photo taken soon after the fire shows, the burn left a patchy landscape. Note the unburned trees in the distance. ...
Why Protect Biodiversity?
... (TOTAL DNA) OF A SPECIES If a species is too inbred, they could be more vulnerable to disease. They might not be able to handle changes in their environment well. ...
... (TOTAL DNA) OF A SPECIES If a species is too inbred, they could be more vulnerable to disease. They might not be able to handle changes in their environment well. ...
Evolution and Biodiversity
... Extinction Local, ecological and true extinction The ultimate fate of all species just as death is for all individual organisms 99.9% of all the species that have ever existed are now extinct To a very close approximation, all species are extinct Background vs. Mass Extinction Low rate ...
... Extinction Local, ecological and true extinction The ultimate fate of all species just as death is for all individual organisms 99.9% of all the species that have ever existed are now extinct To a very close approximation, all species are extinct Background vs. Mass Extinction Low rate ...
Invasive species transform ecosystems by using excessive
... species that are closely related to rare native species have the potential to hybridise with other native species. Invasive species cause competition for native species and because of this, 400 of the 958 are endangered species .Invasive species can impact on outdoor recreation, such as fishing, hun ...
... species that are closely related to rare native species have the potential to hybridise with other native species. Invasive species cause competition for native species and because of this, 400 of the 958 are endangered species .Invasive species can impact on outdoor recreation, such as fishing, hun ...
Effects on the Environment
... the weather, climate, and water availability to thrive. Agricultural and Wildlife impacts most commonly include: contamination of water bodies, loss of harvest or livestock, increased susceptibility to disease, and destruction of irrigation systems and other infrastructure. These impacts can have lo ...
... the weather, climate, and water availability to thrive. Agricultural and Wildlife impacts most commonly include: contamination of water bodies, loss of harvest or livestock, increased susceptibility to disease, and destruction of irrigation systems and other infrastructure. These impacts can have lo ...
lect1
... in early 1900s • Resource conservation ethic: use resources wisely for all society • Quote: “greatest good of the greatest number in the long run” • Legacy is “multiple use” philosophy for government lands. ...
... in early 1900s • Resource conservation ethic: use resources wisely for all society • Quote: “greatest good of the greatest number in the long run” • Legacy is “multiple use” philosophy for government lands. ...
Millennium Drought and Species Recruitment - TopInfo
... Many native species, just did not recover after such extreme events (drought) which is usually considered completely normal without the extra predation pressure. If you like, it is a combination of natural events and human induced pressure, a very deadly combination of events and we have a record nu ...
... Many native species, just did not recover after such extreme events (drought) which is usually considered completely normal without the extra predation pressure. If you like, it is a combination of natural events and human induced pressure, a very deadly combination of events and we have a record nu ...
Realized niche
... Community = group of populations of different species living close enough to interact ...
... Community = group of populations of different species living close enough to interact ...
Extinction
In biology and ecology, extinction is the end of an organism or of a group of organisms (taxon), normally a species. The moment of extinction is generally considered to be the death of the last individual of the species, although the capacity to breed and recover may have been lost before this point. Because a species' potential range may be very large, determining this moment is difficult, and is usually done retrospectively. This difficulty leads to phenomena such as Lazarus taxa, where a species presumed extinct abruptly ""reappears"" (typically in the fossil record) after a period of apparent absence.The age of the Earth is about 4.54 billion years old. The earliest undisputed evidence of life on Earth dates at least from 3.5 billion years ago, during the Eoarchean Era after a geological crust started to solidify following the earlier molten Hadean Eon. There are microbial mat fossils found in 3.48 billion-year-old sandstone discovered in Western Australia. Other early physical evidence of a biogenic substance is graphite in 3.7 billion-year-old metasedimentary rocks discovered in Western Greenland. More than 99 percent of all species, amounting to over five billion species, that ever lived on Earth are estimated to be extinct. Estimates on the number of Earth's current species range from 10 million to 14 million, of which about 1.2 million have been documented and over 86 percent have not yet been described.Through evolution, species arise through the process of speciation—where new varieties of organisms arise and thrive when they are able to find and exploit an ecological niche—and species become extinct when they are no longer able to survive in changing conditions or against superior competition. The relationship between animals and their ecological niches has been firmly established. A typical species becomes extinct within 10 million years of its first appearance, although some species, called living fossils, survive with virtually no morphological change for hundreds of millions of years. Mass extinctions are relatively rare events; however, isolated extinctions are quite common. Only recently have extinctions been recorded and scientists have become alarmed at the current high rate of extinctions. Most species that become extinct are never scientifically documented. Some scientists estimate that up to half of presently existing plant and animal species may become extinct by 2100.