Weeds and Exotics - Powerpoint for May 22.
... • One ecological perspective considers any plant a weed if it is a pioneer species that thrives in a degraded habitat with a history of disturbance through human agency. Such weeds may be native or introduced. • There are also superweeds that have the capacity to invade high quality natural areas. S ...
... • One ecological perspective considers any plant a weed if it is a pioneer species that thrives in a degraded habitat with a history of disturbance through human agency. Such weeds may be native or introduced. • There are also superweeds that have the capacity to invade high quality natural areas. S ...
Notes
... – Low snail density - Enteromorpha dominates tide pool. – Medium snail density - Competitive exclusion eliminated, and algal diversity increased. – High snail density - Feeding requirements are high enough that snails eat preferred algae and lesspreferred algae. • Algal diversity decreased. ...
... – Low snail density - Enteromorpha dominates tide pool. – Medium snail density - Competitive exclusion eliminated, and algal diversity increased. – High snail density - Feeding requirements are high enough that snails eat preferred algae and lesspreferred algae. • Algal diversity decreased. ...
Slide 1
... How did the park rangers/biologists work to find an answer to this question? What happens when a top predator is removed from an ecosystem? How do you feel about “the solution” to Yellowstone’s problem? Did it improve the environment? ...
... How did the park rangers/biologists work to find an answer to this question? What happens when a top predator is removed from an ecosystem? How do you feel about “the solution” to Yellowstone’s problem? Did it improve the environment? ...
Population Ecology - Yorba Linda High School
... constant, how many years will it take for the coyote population to double? ...
... constant, how many years will it take for the coyote population to double? ...
NAME - UAF SNAP
... relationships and the study of causes (e.g., evolution) behind these patterns. All the potential resources that a species can use in its environment Morphological, physiological, behavioral, and spatial differences within a species. A mammal which responds relatively well to fragmentation an often o ...
... relationships and the study of causes (e.g., evolution) behind these patterns. All the potential resources that a species can use in its environment Morphological, physiological, behavioral, and spatial differences within a species. A mammal which responds relatively well to fragmentation an often o ...
Biodiversity
... from wild species – $10 billion/year • 90% decline in rhinos • 1.6 tons of tiger bones = 340 tigers • Parrot smuggling: 40 of 330 species face extinction ...
... from wild species – $10 billion/year • 90% decline in rhinos • 1.6 tons of tiger bones = 340 tigers • Parrot smuggling: 40 of 330 species face extinction ...
The study of how living things interact with nature Biotic The living
... food chains in an ecosystem ...
... food chains in an ecosystem ...
Niche and Communities
... which one animal (the predator) captures and feeds on another animal (the prey) is called predation. ...
... which one animal (the predator) captures and feeds on another animal (the prey) is called predation. ...
4-1 Species Comms Ecos notes - Mr Cartlidge`s Saigon Science Blog
... Essential idea: The continued survival of living organisms including humans depends on sustainable communities. Understandings: • Species are groups of organisms that can potentially interbreed to produce fertile offspring. • Members of a species may be reproductively isolated in separate population ...
... Essential idea: The continued survival of living organisms including humans depends on sustainable communities. Understandings: • Species are groups of organisms that can potentially interbreed to produce fertile offspring. • Members of a species may be reproductively isolated in separate population ...
PDF
... existed. We propose that, as scientists are better able to assess the conservation status of the species that compose an ecosystem, the more they will understand the health of that ecosystem. It is time to accelerate taxonomy and scientific natural history, two of the most vital but neglected discip ...
... existed. We propose that, as scientists are better able to assess the conservation status of the species that compose an ecosystem, the more they will understand the health of that ecosystem. It is time to accelerate taxonomy and scientific natural history, two of the most vital but neglected discip ...
Document
... _____ 6. Which of the following statements is correct? a. An organism’s niche is only the part of its habitat that it eats. b. An organism’s habitat is a location. c. Habitat and niche are the same thing. d. An organism’s niche is outside its habitat. _____ 7. Which of the following is part of an Am ...
... _____ 6. Which of the following statements is correct? a. An organism’s niche is only the part of its habitat that it eats. b. An organism’s habitat is a location. c. Habitat and niche are the same thing. d. An organism’s niche is outside its habitat. _____ 7. Which of the following is part of an Am ...
Populations
... during the night. Because they use the same food source, the two species are indirect competitors. Humans rarely interact with the insects that eat our food crops, but those insects are still competing with us for food. ...
... during the night. Because they use the same food source, the two species are indirect competitors. Humans rarely interact with the insects that eat our food crops, but those insects are still competing with us for food. ...
ch29_lecture
... • Interspecific competition has a negative effect on both species • Predation and parasitism both benefit one species at a cost to another ...
... • Interspecific competition has a negative effect on both species • Predation and parasitism both benefit one species at a cost to another ...
Reactive oxygen species in acidified waterways (PDF File 84.3 KB)
... species is a key driver for several key chemical reactions and could be manipulated to reduce pollution in these landscapes. ‘Degradation of the environment in landscapes where there is mining is a significant problem in Australia’, says Dr Reynolds. ‘There may be impacts from this activity ranging ...
... species is a key driver for several key chemical reactions and could be manipulated to reduce pollution in these landscapes. ‘Degradation of the environment in landscapes where there is mining is a significant problem in Australia’, says Dr Reynolds. ‘There may be impacts from this activity ranging ...
Plant Communities and Succession
... • Density = number of individuals per unit area • Frequency = percent of quadrats in which a species appears • These values can be relativized so that all species add up to 100% • Another approach is to combine several relative measures into a single importance value (IV): – IV = relative cover + re ...
... • Density = number of individuals per unit area • Frequency = percent of quadrats in which a species appears • These values can be relativized so that all species add up to 100% • Another approach is to combine several relative measures into a single importance value (IV): – IV = relative cover + re ...
Study Guide: ECOLOGY Name
... 57. What is sustainable development? _______________________________________________________________ _____________________________________________________________________________________________ 58. Define biodiversity: __________________________________________________________________________ 59. ...
... 57. What is sustainable development? _______________________________________________________________ _____________________________________________________________________________________________ 58. Define biodiversity: __________________________________________________________________________ 59. ...
T o p 2 0 I n v a s i v e S p e c i e s
... you can help Avoid disturbing natural areas, including clearing of native vegetation. Know your plants. Find out if plants you grow have invasive tendencies. Do not use invasive species in landscaping, restoration, or for erosion control; use plants known not to be invasive in your area. ...
... you can help Avoid disturbing natural areas, including clearing of native vegetation. Know your plants. Find out if plants you grow have invasive tendencies. Do not use invasive species in landscaping, restoration, or for erosion control; use plants known not to be invasive in your area. ...
ECOLOGY AND BEHAVIOR
... o density dependent competition: food, mates, nesting sites predators, parasites, pathogens ...
... o density dependent competition: food, mates, nesting sites predators, parasites, pathogens ...
Island restoration
The ecological restoration of islands, or island restoration, is the application of the principles of ecological restoration to islands and island groups. Islands, due to their isolation, are home to many of the world's endemic species, as well as important breeding grounds for seabirds and some marine mammals. Their ecosystems are also very vulnerable to human disturbance and particularly to introduced species, due to their small size. Island groups such as New Zealand and Hawaii have undergone substantial extinctions and losses of habitat. Since the 1950s several organisations and government agencies around the world have worked to restore islands to their original states; New Zealand has used them to hold natural populations of species that would otherwise be unable to survive in the wild. The principal components of island restoration are the removal of introduced species and the reintroduction of native species.