Community Ecology
... Each stage facilitates invasion and replacement by organisms of the next stage Succession in a particular area will always lead to the same type of community Climax Community ...
... Each stage facilitates invasion and replacement by organisms of the next stage Succession in a particular area will always lead to the same type of community Climax Community ...
chapter_47_powerpoint_l
... Each stage facilitates invasion and replacement by organisms of the next stage Succession in a particular area will always lead to the same type of community Climax Community ...
... Each stage facilitates invasion and replacement by organisms of the next stage Succession in a particular area will always lead to the same type of community Climax Community ...
Biodiversity (pages 95–105)
... • Captive breeding is having animals in zoos or wildlife preserves mate and reproduce. • Laws and treaties can protect species. A law in the United States called the Endangered Species Act protects threatened species and endangered species. International treaties can protect species around the world ...
... • Captive breeding is having animals in zoos or wildlife preserves mate and reproduce. • Laws and treaties can protect species. A law in the United States called the Endangered Species Act protects threatened species and endangered species. International treaties can protect species around the world ...
Chapter 10
... cause favorable conditions to disappear • Some organisms will slow reproduction when their habitats become too crowded • Fight among each other • Possibly cannibalize each other • Diseases spread faster • Large populations pollute the environment ...
... cause favorable conditions to disappear • Some organisms will slow reproduction when their habitats become too crowded • Fight among each other • Possibly cannibalize each other • Diseases spread faster • Large populations pollute the environment ...
Ecology_Project
... specific requirements for light; too much or too little sunshine will kill them. 5. Low Fecundity: Species produces few offspring. Note: species which care for their young either before birth (long pregnancy) and/or afterwards have fewer offspring than those who do not. 6. High Human Value: Species ...
... specific requirements for light; too much or too little sunshine will kill them. 5. Low Fecundity: Species produces few offspring. Note: species which care for their young either before birth (long pregnancy) and/or afterwards have fewer offspring than those who do not. 6. High Human Value: Species ...
Factors That Affect Climate
... anemone. Clownfish have a slimy mucus covering that protects them from the sea anemone. However, if this covering is wiped off of a clownfish, it will get stung and possibly be killed when it returns home to the anemone. The clownfish and the sea anemone help each other survive in the ocean. The clo ...
... anemone. Clownfish have a slimy mucus covering that protects them from the sea anemone. However, if this covering is wiped off of a clownfish, it will get stung and possibly be killed when it returns home to the anemone. The clownfish and the sea anemone help each other survive in the ocean. The clo ...
changes to populations Power Point
... Impact of Temperature Rise on Robusta Coffee in Uganda. Developing countries, whose economies often rely heavily on one or two agricultural products, are especially vulnerable to climate change. This graphic shows that with an increase of only 2 degrees Celsius, there would be a dramatic decrease in ...
... Impact of Temperature Rise on Robusta Coffee in Uganda. Developing countries, whose economies often rely heavily on one or two agricultural products, are especially vulnerable to climate change. This graphic shows that with an increase of only 2 degrees Celsius, there would be a dramatic decrease in ...
The Big Kill - impossible2Possible
... disappearance was caused by a combination of climate change and over-hunting by humans. The mammoth had flourished during the last ice age, but when temperatures began to warm their habitat gradually decreased from 7.7 million to less than one million square kilometers. Although mammoths had survive ...
... disappearance was caused by a combination of climate change and over-hunting by humans. The mammoth had flourished during the last ice age, but when temperatures began to warm their habitat gradually decreased from 7.7 million to less than one million square kilometers. Although mammoths had survive ...
km
... their needs for food, medicine, and raw materials. Modern hunter-gatherers still frequently exploit wildlife populations for food. In many temperate countries regulatory protocols that aim to prevent overexploitation have been developed; but population management prescriptions in islands are often n ...
... their needs for food, medicine, and raw materials. Modern hunter-gatherers still frequently exploit wildlife populations for food. In many temperate countries regulatory protocols that aim to prevent overexploitation have been developed; but population management prescriptions in islands are often n ...
Marine Ecology
... hard parts of organisms (oyster shells, calcareous algae) • Sometimes called “reefs” – not coral ...
... hard parts of organisms (oyster shells, calcareous algae) • Sometimes called “reefs” – not coral ...
Biodiversity of Life
... The number of species in an ecosystem are comparable to the rivets in an airplane. If 1 or 2 fall out, no big deal. BUT, if they keep falling out, eventually, the plane (i.e. the ecosystem) will fall apart (die out). ...
... The number of species in an ecosystem are comparable to the rivets in an airplane. If 1 or 2 fall out, no big deal. BUT, if they keep falling out, eventually, the plane (i.e. the ecosystem) will fall apart (die out). ...
Ecology Final Notes
... - Sustained yield means constant yield without causing population crash. - Want population to be at max growth rate for max sustained harvest - Max sustained yield = K/2 = inflection point - Aquatic organisms have long gen times so easily over exploited. - MVP depends on threshold to population grow ...
... - Sustained yield means constant yield without causing population crash. - Want population to be at max growth rate for max sustained harvest - Max sustained yield = K/2 = inflection point - Aquatic organisms have long gen times so easily over exploited. - MVP depends on threshold to population grow ...
Food Webs Augmented With Additional Data: Structure and Dynamics
... – 7 types of soil community (farms, forest, fields) ...
... – 7 types of soil community (farms, forest, fields) ...
Concept of r-selected and K-selected Organisms Organisms
... the minimum quantity needed for growth is not available, then growth does not occur. In contrast, if two resources are substitutable, then population growth is limited by an appropriately weighted sum of the two resources in the environment. For example, glucose and fructose are substitutable food s ...
... the minimum quantity needed for growth is not available, then growth does not occur. In contrast, if two resources are substitutable, then population growth is limited by an appropriately weighted sum of the two resources in the environment. For example, glucose and fructose are substitutable food s ...
Slide 1
... Zooplankton community structure has changed in concert with climate and physical processes acting over the North Atlantic Basin indicating the importance of remote forcing to the function and structure of the ecosystem The direct and indirect effects of species-selective harvesting patterns have als ...
... Zooplankton community structure has changed in concert with climate and physical processes acting over the North Atlantic Basin indicating the importance of remote forcing to the function and structure of the ecosystem The direct and indirect effects of species-selective harvesting patterns have als ...
AP Ecology-Practice-Teat 2012-from-released-exams
... (C) regulated by density-dependent factors, because there appears to be about a 10-year cycle of sharp declines in size (D) shifting from K-selected strategy to an r-selected strategy (E) stable after 1850 under the effects of density-dependent regulating factors (51) The dashed line on the graph re ...
... (C) regulated by density-dependent factors, because there appears to be about a 10-year cycle of sharp declines in size (D) shifting from K-selected strategy to an r-selected strategy (E) stable after 1850 under the effects of density-dependent regulating factors (51) The dashed line on the graph re ...
environment test
... 5. Habitat loss and fragmentation, over exploitation, alien species invasion and co extinction are causes for a) Population exploitation b) Pollution c) Migration d) Biodiversity loss 6. The major pollutant from automoblie exhaust is a) NO b) CO c) SO2 d) Soot 7. One greenhouse gas contributes 14% t ...
... 5. Habitat loss and fragmentation, over exploitation, alien species invasion and co extinction are causes for a) Population exploitation b) Pollution c) Migration d) Biodiversity loss 6. The major pollutant from automoblie exhaust is a) NO b) CO c) SO2 d) Soot 7. One greenhouse gas contributes 14% t ...
4/2/2014
... Extinct (EX): A taxon is considered extinct when there is no reasonable doubt that the last individual had died. Extinction in the Wild (EW): A taxon is Extinct in the Wild when it is known to survive in cultivation, in captivity or as a naturalized population well outside the past range. A species ...
... Extinct (EX): A taxon is considered extinct when there is no reasonable doubt that the last individual had died. Extinction in the Wild (EW): A taxon is Extinct in the Wild when it is known to survive in cultivation, in captivity or as a naturalized population well outside the past range. A species ...
File - need help with revision notes?
... One sere changes the conditions to allow the next sere to be established Succession leads to a climax community, in which the species in the community are in balance with the environmental conditions and all niches have been filled. The climax community will be dominated by the largest and most ...
... One sere changes the conditions to allow the next sere to be established Succession leads to a climax community, in which the species in the community are in balance with the environmental conditions and all niches have been filled. The climax community will be dominated by the largest and most ...
The “bottom up” view of Ecosystem production The
... Increases in primary production propagate through the food web ...
... Increases in primary production propagate through the food web ...
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.