Ch. 5 Review
... Coevolution has been important because 2 species fight for resources and then change in the process become less competitive so they don’t die. In parasitism the parasite is smaller than the host. Mutualism causes 2 things protection and nutrition. 1 type of mutualism is gut inhabitant where ...
... Coevolution has been important because 2 species fight for resources and then change in the process become less competitive so they don’t die. In parasitism the parasite is smaller than the host. Mutualism causes 2 things protection and nutrition. 1 type of mutualism is gut inhabitant where ...
Chapter5-Notes
... Zebra Mussels: The zebra mussel, Dreissena polymorpha, is a species of small freshwater mussel, an aquatic bivalve mollusk. This species was originally native to the lakes of southeast Russia. However, it has been accidentally introduced in many other areas, and has become a problematic invasive spe ...
... Zebra Mussels: The zebra mussel, Dreissena polymorpha, is a species of small freshwater mussel, an aquatic bivalve mollusk. This species was originally native to the lakes of southeast Russia. However, it has been accidentally introduced in many other areas, and has become a problematic invasive spe ...
Document
... and σγ represent the optimal trait ratio of predator to prey and the dietary breadth of the predator. The natural mortality is also assumed to be trait-mediated, Di = d0exp(-ri/4) (Peters, 1983). The intensity of interference competition is at its maximum when the two competing species have identica ...
... and σγ represent the optimal trait ratio of predator to prey and the dietary breadth of the predator. The natural mortality is also assumed to be trait-mediated, Di = d0exp(-ri/4) (Peters, 1983). The intensity of interference competition is at its maximum when the two competing species have identica ...
Chapter 10 Book Reading Assessment
... a. Biodiversity could decrease as owners of forests sell their land to developers. b. Biodiversity could be sustained because of fewer forests would be harvested. c. Stewardship of public lands could decline as revenue to the U.S. government decreases d. All of the choices 9. Which one of the follow ...
... a. Biodiversity could decrease as owners of forests sell their land to developers. b. Biodiversity could be sustained because of fewer forests would be harvested. c. Stewardship of public lands could decline as revenue to the U.S. government decreases d. All of the choices 9. Which one of the follow ...
BIODIVERSITY: WHY IT MATTERS Should it matter to humans that
... The notion that biodiversity has provided us with many benefits is well understood. Some of these benefits come in the form of goods that can be directly valued because they provide something that can be extracted and sold. These goods include everything from all the domesticated agricultural crops ...
... The notion that biodiversity has provided us with many benefits is well understood. Some of these benefits come in the form of goods that can be directly valued because they provide something that can be extracted and sold. These goods include everything from all the domesticated agricultural crops ...
Ch 13 Sustaining Aquatic Biodiversity
... During the past 100 years, sea levels have risen 10-25 centimeters. We have destroyed more than 1/3 of the world’s mangrove forests for shipping lanes. ...
... During the past 100 years, sea levels have risen 10-25 centimeters. We have destroyed more than 1/3 of the world’s mangrove forests for shipping lanes. ...
ESPM 169 Lecture September 12, 2002
... - most basic building-block of BD: blueprint for individual organisms 2. Species (most useful measure) - distinctive groups of similar populations that are isolated reproductively from other such groups 3. Ecosystems 4. All add up to the biosphere - through which BD is distributed - hot-spots; tropi ...
... - most basic building-block of BD: blueprint for individual organisms 2. Species (most useful measure) - distinctive groups of similar populations that are isolated reproductively from other such groups 3. Ecosystems 4. All add up to the biosphere - through which BD is distributed - hot-spots; tropi ...
Lecture 10
... Predation • Parasitism is a similar form of this symbiotic relationship, but the host may only be weakened. • As we discussed in the previous lecture, predation has negative immediate consequences, but can have positive long-term. • For instance, thinning out the weak or sick. ...
... Predation • Parasitism is a similar form of this symbiotic relationship, but the host may only be weakened. • As we discussed in the previous lecture, predation has negative immediate consequences, but can have positive long-term. • For instance, thinning out the weak or sick. ...
Chapter12-HumanInteractions
... Ancient bison in North American may have been hunted to extinction. The dodo, the passenger pigeon, and the Great Auk have all gone extinct due to overhunting. ...
... Ancient bison in North American may have been hunted to extinction. The dodo, the passenger pigeon, and the Great Auk have all gone extinct due to overhunting. ...
INTRO TO ECOLOGY
... •Humans use 10 – 55% of Earth’s primary productivity •Ecological Footprint: analysis of your resource use; analyze people’s use of food/natural resources •Sustainability: meet the needs of a population indefinitely—need to close the gap b/n renewable and nonrenewable resources ...
... •Humans use 10 – 55% of Earth’s primary productivity •Ecological Footprint: analysis of your resource use; analyze people’s use of food/natural resources •Sustainability: meet the needs of a population indefinitely—need to close the gap b/n renewable and nonrenewable resources ...
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. ...
Micronesia Challenge and Coastal Fisheries
... Characteristics of Pohnpei Coral Reef Fisheries • Declines in abundance • Declines in fish size • Declines in fish fecundity (number of eggs produced) • Loss of species (e.g. giant clam) • Deteriorating reef condition • Habitat loss • Worsening water quality • Reduced catch and income, impoverished ...
... Characteristics of Pohnpei Coral Reef Fisheries • Declines in abundance • Declines in fish size • Declines in fish fecundity (number of eggs produced) • Loss of species (e.g. giant clam) • Deteriorating reef condition • Habitat loss • Worsening water quality • Reduced catch and income, impoverished ...
Ecology - wlhs.wlwv.k12.or.us
... replenished by natural processes in a reasonable amount of time Ex: fossil fuels ...
... replenished by natural processes in a reasonable amount of time Ex: fossil fuels ...
File
... away all existing vegetation, the area will be recolonized by a variety of species which are gradually replaced by other species, which in turn are also replaced in a process known as ecological succession. ...
... away all existing vegetation, the area will be recolonized by a variety of species which are gradually replaced by other species, which in turn are also replaced in a process known as ecological succession. ...
File
... relatively quick period of time. The number of organisms existing today is (higher / lower / about the same) as was present in the past. The Shannon Diversity Index ranges from _______ (being no diversity) to _______ (having a very high biodiversity) (provide numbers). What factors can lead to chang ...
... relatively quick period of time. The number of organisms existing today is (higher / lower / about the same) as was present in the past. The Shannon Diversity Index ranges from _______ (being no diversity) to _______ (having a very high biodiversity) (provide numbers). What factors can lead to chang ...
Biological Communities CH 17-1
... resources more effectively will eventually exclude the other • If both species niches do not overlap too much they can both survive ...
... resources more effectively will eventually exclude the other • If both species niches do not overlap too much they can both survive ...
Overexploitation
Overexploitation, also called overharvesting, refers to harvesting a renewable resource to the point of diminishing returns. Sustained overexploitation can lead to the destruction of the resource. The term applies to natural resources such as: wild medicinal plants, grazing pastures, game animals, fish stocks, forests, and water aquifers.In ecology, overexploitation describes one of the five main activities threatening global biodiversity. Ecologists use the term to describe populations that are harvested at a rate that is unsustainable, given their natural rates of mortality and capacities for reproduction. This can result in extinction at the population level and even extinction of whole species. In conservation biology the term is usually used in the context of human economic activity that involves the taking of biological resources, or organisms, in larger numbers than their populations can withstand. The term is also used and defined somewhat differently in fisheries, hydrology and natural resource management.Overexploitation can lead to resource destruction, including extinctions. However it is also possible for overexploitation to be sustainable, as discussed below in the section on fisheries. In the context of fishing, the term overfishing can be used instead of overexploitation, as can overgrazing in stock management, overlogging in forest management, overdrafting in aquifer management, and endangered species in species monitoring. Overexploitation is not an activity limited to humans. Introduced predators and herbivores, for example, can overexploit native flora and fauna.