Teacher Guide: Biodiversity - Harvard Life Sciences Outreach Program
... The slide show begins with slides 2-8 representing the 3 levels of biodiversity: species diversity, genetic diversity, and ecosystem diversity Slides 2-4 are representative of the species diversity showing different species of: bacteria, worms, and bears. Slides 5-6 are representative of genet ...
... The slide show begins with slides 2-8 representing the 3 levels of biodiversity: species diversity, genetic diversity, and ecosystem diversity Slides 2-4 are representative of the species diversity showing different species of: bacteria, worms, and bears. Slides 5-6 are representative of genet ...
What is Biodiversity? - WARE-RET Curriculum Development Collab
... What makes a species invasive? An invasive species can be any kind of living organism—an amphibian (like the cane toad pictured left), plant, insect, fish, fungus, bacteria, or even an organism’s seeds or eggs—that is not native to an ecosystem and which causes harm. They can harm the environment, t ...
... What makes a species invasive? An invasive species can be any kind of living organism—an amphibian (like the cane toad pictured left), plant, insect, fish, fungus, bacteria, or even an organism’s seeds or eggs—that is not native to an ecosystem and which causes harm. They can harm the environment, t ...
(no “make up” exams) Text
... Can be no more than 5-7 trophic levels, food chain loops are disallowed, must be at least one producer in every ecosystem, etc. Astronomically large numbers of random systems : for only 40 species, there are 10764 possible networks of which only about 10500 are biologically reasonable — realistic sy ...
... Can be no more than 5-7 trophic levels, food chain loops are disallowed, must be at least one producer in every ecosystem, etc. Astronomically large numbers of random systems : for only 40 species, there are 10764 possible networks of which only about 10500 are biologically reasonable — realistic sy ...
Are invasive species a major cause of extinctions?
... of the extinction risk posed by aliens. Alien plants might be more likely to cause displacement and community change rather than causing species extinctions. This is the case, for example, for Psidium cattleianum in rainforests in Madagascar, where its presence has altered diversity patterns in comm ...
... of the extinction risk posed by aliens. Alien plants might be more likely to cause displacement and community change rather than causing species extinctions. This is the case, for example, for Psidium cattleianum in rainforests in Madagascar, where its presence has altered diversity patterns in comm ...
Chapter 16
... 16.4 What Causes Extinction? Localized distribution make species vulnerable in changing environments – Species inhabiting extremely limited ranges may become extinct if the area is disturbed –The Devil’s Hole pupfish is found in only one spring-fed waterhole in the Nevada desert – Wide-ranging sp ...
... 16.4 What Causes Extinction? Localized distribution make species vulnerable in changing environments – Species inhabiting extremely limited ranges may become extinct if the area is disturbed –The Devil’s Hole pupfish is found in only one spring-fed waterhole in the Nevada desert – Wide-ranging sp ...
PPT File
... contaminating the environment is biomagnification. • Once toxins are in the environment, they can be ingested or absorbed into organisms. • If an organism takes in small quantities of a toxin without breaking it down or excreting it, it accumulates in its body. This is called bioaccumulation. ...
... contaminating the environment is biomagnification. • Once toxins are in the environment, they can be ingested or absorbed into organisms. • If an organism takes in small quantities of a toxin without breaking it down or excreting it, it accumulates in its body. This is called bioaccumulation. ...
species protection: economic issues, myths and facts
... stability. Studies by Stanford's Peter Vitousek and other ecologists have demonstrated that experimental systems containing greater numbers of species are more resilient in the face of drought and other stresses than species-poor systems (Naeem, et al., 1994; Pennisi, 1994; Tilman, 1996). ...
... stability. Studies by Stanford's Peter Vitousek and other ecologists have demonstrated that experimental systems containing greater numbers of species are more resilient in the face of drought and other stresses than species-poor systems (Naeem, et al., 1994; Pennisi, 1994; Tilman, 1996). ...
What are the major stumbling stones for halt
... biodiversity conservation according to criteria they defined themselves. If no data were available, it was automatically classified as unsuccessful. Thus, two of the four studies were unsuccessful. In another site, biodiversity conservation was unsuccessful because some populations decreased by more ...
... biodiversity conservation according to criteria they defined themselves. If no data were available, it was automatically classified as unsuccessful. Thus, two of the four studies were unsuccessful. In another site, biodiversity conservation was unsuccessful because some populations decreased by more ...
ppt - eweb.furman.edu
... biodiversity loss could see 6% of global GDP wiped out as early as 2050. The Economics of Ecosystems and Biodiversity executive summary (2010) reports that “over 50% of CEOs surveyed in Latin America and 45% in Africa see declines in biodiversity as a challenge to business growth. In contrast, less ...
... biodiversity loss could see 6% of global GDP wiped out as early as 2050. The Economics of Ecosystems and Biodiversity executive summary (2010) reports that “over 50% of CEOs surveyed in Latin America and 45% in Africa see declines in biodiversity as a challenge to business growth. In contrast, less ...
Unit04: Evolution and Biodiversity
... B. When population members cannot adapt to changing environmental conditions, the species becomes extinct. 1. A species manages to survive one to ten million years before extinction occurs. 2. Life has had to cope with many major natural disasters that may reduce or eliminate species. 3. Introductio ...
... B. When population members cannot adapt to changing environmental conditions, the species becomes extinct. 1. A species manages to survive one to ten million years before extinction occurs. 2. Life has had to cope with many major natural disasters that may reduce or eliminate species. 3. Introductio ...
Born at Rio 1992
... from the intense logging and industrial fishing industries to mining and oil companies – have stalled the negotiations, and governments have often prioritised their own short-term financial interests over the long-term interests to protect life on Earth. Over the past few hundred years, humans have ...
... from the intense logging and industrial fishing industries to mining and oil companies – have stalled the negotiations, and governments have often prioritised their own short-term financial interests over the long-term interests to protect life on Earth. Over the past few hundred years, humans have ...
Chapter 12 Species Diversity
... world (at least not at the moment) But!!! Can we get some guidance or hints where biodiversity is greatest??? ...
... world (at least not at the moment) But!!! Can we get some guidance or hints where biodiversity is greatest??? ...
CHAPTER 8
... grasslands, over-hunting of wildlife, and pumping out aquifers for fresh water faster than they can recharge. h. Some human activities also interfere with normal chemical cycling and energy flows in ecosystems. i. Human-dominated ecosystems are increasingly dependent on nonrenewable energy from foss ...
... grasslands, over-hunting of wildlife, and pumping out aquifers for fresh water faster than they can recharge. h. Some human activities also interfere with normal chemical cycling and energy flows in ecosystems. i. Human-dominated ecosystems are increasingly dependent on nonrenewable energy from foss ...
Remnant Wiliwili Forest Habitat at Wailea 670, Maui, Hawai`i: II
... • A single large reserve is preferable to several small reserves of equal total area, assuming they all represent the same ecosystem type. Conservationists prefer large reserves to small reserves for two main reasons. First, large reserves will, on average, contain a wider range of environmental con ...
... • A single large reserve is preferable to several small reserves of equal total area, assuming they all represent the same ecosystem type. Conservationists prefer large reserves to small reserves for two main reasons. First, large reserves will, on average, contain a wider range of environmental con ...
WHY BRITISH COLUMBIA NEEDS AN ENDANGERED SPECIES LAW
... n 2014 a report was published in Science Magazine, which showed that the world is headed into a sixth extinction period for wildlife species. The report said that, “humans have triggered a wave of extinction, threat, and local population declines that may be comparable in both rate and magnitude wit ...
... n 2014 a report was published in Science Magazine, which showed that the world is headed into a sixth extinction period for wildlife species. The report said that, “humans have triggered a wave of extinction, threat, and local population declines that may be comparable in both rate and magnitude wit ...
Rabbits “Near Threatened” with Extinction
... The European Rabbit (Oryctolagus cuniculus) has been officially reclassified as “Near Threatened” with extinction, in its native range, by the International Union for Conservation of Nature (IUCN). Many people remain unaware that the European Rabbit is native to just Spain, Portugal and small parts ...
... The European Rabbit (Oryctolagus cuniculus) has been officially reclassified as “Near Threatened” with extinction, in its native range, by the International Union for Conservation of Nature (IUCN). Many people remain unaware that the European Rabbit is native to just Spain, Portugal and small parts ...
Wildlife Management
... • Logarithmic growth exhibits an S-curve when graphed as the population size approaches the carrying capacity of the habitat. • As populations reach the carrying capacity, fewer resources are available per individual of a species, reducing their growth and reproductive rates. • However, while this i ...
... • Logarithmic growth exhibits an S-curve when graphed as the population size approaches the carrying capacity of the habitat. • As populations reach the carrying capacity, fewer resources are available per individual of a species, reducing their growth and reproductive rates. • However, while this i ...
An Introduction to Trilobites
... Trilobites were marine organisms that lived on Earth for over 270 million years and are considered known to be one of the most successful early animal groups ...
... Trilobites were marine organisms that lived on Earth for over 270 million years and are considered known to be one of the most successful early animal groups ...
Are Domestic Cats Wiping Out Wildlife?
... Too many people place too much emphasis on anecdote and indirect evidence solely to implicate cats in extinctions. For example, Europeans discovered the sub-Antarctic Macquarie Island in 1810. According to Taylor (1979), even though people introduced cats and other predators there, the Macquarie Isl ...
... Too many people place too much emphasis on anecdote and indirect evidence solely to implicate cats in extinctions. For example, Europeans discovered the sub-Antarctic Macquarie Island in 1810. According to Taylor (1979), even though people introduced cats and other predators there, the Macquarie Isl ...
Biodiversity Newsletter or Brochure
... genetic diversity, and frequency of occurrence. The quality of human life is directly related to the quality of life for all organisms. Preserving biodiversity is key to our well-being. Government agencies such as the National Park Service are concerned with conservation of habitats that are necessa ...
... genetic diversity, and frequency of occurrence. The quality of human life is directly related to the quality of life for all organisms. Preserving biodiversity is key to our well-being. Government agencies such as the National Park Service are concerned with conservation of habitats that are necessa ...
14.1 Habitat And Niche
... 14.1 Habitat And Niche Resource availability gives structure to a community. • Species can share habitats and resources. • Competition occurs when two species use resources in the same way. • Competitive exclusion keeps two species from occupying the same niche. – One species is better suited to th ...
... 14.1 Habitat And Niche Resource availability gives structure to a community. • Species can share habitats and resources. • Competition occurs when two species use resources in the same way. • Competitive exclusion keeps two species from occupying the same niche. – One species is better suited to th ...
Unit 5 Review Jeopardy
... designed to identify and protect endangered species in the United States and abroad. This act is probably the most far-reaching environmental law ever adopted by any nation, which has made it controversial. Under the ESA, the National Marine Fisheries Service (NMFS) is responsible for identifying an ...
... designed to identify and protect endangered species in the United States and abroad. This act is probably the most far-reaching environmental law ever adopted by any nation, which has made it controversial. Under the ESA, the National Marine Fisheries Service (NMFS) is responsible for identifying an ...
Habitats
... Causes of Habitat Fragmentation • Human Development: urban sprawl replaces habitats and corridors with houses and parking lots, but can also change the niche of a species. • For example, as human populations encroach on habitat in North America, species like deer and bear are more likely to become ...
... Causes of Habitat Fragmentation • Human Development: urban sprawl replaces habitats and corridors with houses and parking lots, but can also change the niche of a species. • For example, as human populations encroach on habitat in North America, species like deer and bear are more likely to become ...
Habitats
... Causes of Habitat Fragmentation • Human Development: urban sprawl replaces habitats and corridors with houses and parking lots, but can also change the niche of a species. • For example, as human populations encroach on habitat in North America, species like deer and bear are more likely to become ...
... Causes of Habitat Fragmentation • Human Development: urban sprawl replaces habitats and corridors with houses and parking lots, but can also change the niche of a species. • For example, as human populations encroach on habitat in North America, species like deer and bear are more likely to become ...
Habitats - Laurel County Schools
... Causes of Habitat Fragmentation • Human Development: urban sprawl replaces habitats and corridors with houses and parking lots, but can also change the niche of a species. • For example, as human populations encroach on habitat in North America, species like deer and bear are more likely to become ...
... Causes of Habitat Fragmentation • Human Development: urban sprawl replaces habitats and corridors with houses and parking lots, but can also change the niche of a species. • For example, as human populations encroach on habitat in North America, species like deer and bear are more likely to become ...
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.