Chapter 3.3 How Introduced Species Affect Ecosystems
... Invasive Species • Often have high reproductive rates, are aggressive competitors, and lack natural predators in new habitats • Have potential to dramatically change ecosystems through – Competition – Predation – Disease and parasitism – Habitat alteration ...
... Invasive Species • Often have high reproductive rates, are aggressive competitors, and lack natural predators in new habitats • Have potential to dramatically change ecosystems through – Competition – Predation – Disease and parasitism – Habitat alteration ...
Community Ecology
... • One species benefits, other is neither harmed nor helped • Ex: Cattle egrets and water buffalo ...
... • One species benefits, other is neither harmed nor helped • Ex: Cattle egrets and water buffalo ...
FJC: Biodiversity (text only) Lecture Notes Page
... Georges Bank Cod Fishery North Atlantic (Maine) Landings decreased ~91% from 1990-1999 Industry response: increase use of technology & increase the number of fishing boats Over-fishing became so severe that the Cod population crashed (nearly no fish left) Regulations had to be implemented ...
... Georges Bank Cod Fishery North Atlantic (Maine) Landings decreased ~91% from 1990-1999 Industry response: increase use of technology & increase the number of fishing boats Over-fishing became so severe that the Cod population crashed (nearly no fish left) Regulations had to be implemented ...
Ch08
... evolves into a group of new species, each adapted to one of these niches. • Ecological Island: – An area that is biologically isolated so that a species occurring within the area rarely mixes with any other population of the same species ...
... evolves into a group of new species, each adapted to one of these niches. • Ecological Island: – An area that is biologically isolated so that a species occurring within the area rarely mixes with any other population of the same species ...
The making of the Fittest: Natural Selection and Adaptation
... the theory of evolution by natural selection based on distinct sets of observations and facts. • The natural origin and evolution of species provide scientific explanations for both the diversity and the relatedness of species, as well as the sequence of change found in the fossil record. • Natural ...
... the theory of evolution by natural selection based on distinct sets of observations and facts. • The natural origin and evolution of species provide scientific explanations for both the diversity and the relatedness of species, as well as the sequence of change found in the fossil record. • Natural ...
Wildland Impacts of Exotic Wildlife
... animals that are not native (natural) to an area species that did not evolve with the ecosystem in which they are found the result of deliberate or accidental human activities ...
... animals that are not native (natural) to an area species that did not evolve with the ecosystem in which they are found the result of deliberate or accidental human activities ...
Geography of Extinctions
... new barriers for dispersal • Will also tend to increase isolation of patches in increasingly fragmented habitats (refer to human effects earlier) ...
... new barriers for dispersal • Will also tend to increase isolation of patches in increasingly fragmented habitats (refer to human effects earlier) ...
The impact of exotic species on island ecosystems in the Dutch
... The impact of exotic species on island ecosystems in the Dutch Caribbean This project provides an opportunity for a student to develop field research skills that are essential for ecology, biodiversity conservation, and environmental science. Project Description Humans are greatly transforming natur ...
... The impact of exotic species on island ecosystems in the Dutch Caribbean This project provides an opportunity for a student to develop field research skills that are essential for ecology, biodiversity conservation, and environmental science. Project Description Humans are greatly transforming natur ...
Chapter 5 Review: Biodiversity, Species Interaction and Population
... 6. What methods do predators use to capture prey? 7. What methods do prey use to escape capture? 8. What are the long term effects of parasites? 9. What is camouflage? Mimicry? Give examples of each. 10. What is co-evolution? 11. Read the insert on Kelp Forests. 12. What are the conditions that cons ...
... 6. What methods do predators use to capture prey? 7. What methods do prey use to escape capture? 8. What are the long term effects of parasites? 9. What is camouflage? Mimicry? Give examples of each. 10. What is co-evolution? 11. Read the insert on Kelp Forests. 12. What are the conditions that cons ...
Review for Test
... Mountains, ecologists have studied some closely related plethodontid salamander species for decades. Many of these salamander species, when they occur in separate valleys from each other, tend to have very similar food size choices. However, when these species occur together in a mountain valley, th ...
... Mountains, ecologists have studied some closely related plethodontid salamander species for decades. Many of these salamander species, when they occur in separate valleys from each other, tend to have very similar food size choices. However, when these species occur together in a mountain valley, th ...
The Future of Alien Invasive Species: Changing Social Views Jeffrey
... IUCN (The World Conservation Union) • Widely published, especially on the relationship between agriculture and biodiversity ...
... IUCN (The World Conservation Union) • Widely published, especially on the relationship between agriculture and biodiversity ...
The Human Impact on the Environment
... Invasive Species • Apparently harmless animals and plants that are transported around the world. • In their new habitats invasive species reproduce rapidly because they lack predators that keep their population in check. ...
... Invasive Species • Apparently harmless animals and plants that are transported around the world. • In their new habitats invasive species reproduce rapidly because they lack predators that keep their population in check. ...
The Human Impact on the Environment
... Invasive Species • Apparently harmless animals and plants that are transported around the world. • In their new habitats invasive species reproduce rapidly because they lack predators that keep their population in check. ...
... Invasive Species • Apparently harmless animals and plants that are transported around the world. • In their new habitats invasive species reproduce rapidly because they lack predators that keep their population in check. ...
Ecosystems
... Predators limit the population size of their prey. Also, they tend to feed on old and weak individuals who are more likely to die anyway. ...
... Predators limit the population size of their prey. Also, they tend to feed on old and weak individuals who are more likely to die anyway. ...
Introduced tree species in European forests: challenges and
... species A species in a given area whose presence there is due to intentional (non-native, alien, non- or accidental introduction as a result of human activity. indigenous, exotic) Species that have evolved in a given area or that arrived there by Native species natural means without the intentional ...
... species A species in a given area whose presence there is due to intentional (non-native, alien, non- or accidental introduction as a result of human activity. indigenous, exotic) Species that have evolved in a given area or that arrived there by Native species natural means without the intentional ...
1.2 Ecosystems – Student Notes
... • _____________- necessary for all life • _____________ - for growth • _____________ - required for photosynthesis • _____________ - contains water & nutrients Biotic Interactions in Ecosystems • ________________: all organisms that interact within an ecosystem. • _________________: all members of a ...
... • _____________- necessary for all life • _____________ - for growth • _____________ - required for photosynthesis • _____________ - contains water & nutrients Biotic Interactions in Ecosystems • ________________: all organisms that interact within an ecosystem. • _________________: all members of a ...
invasive species
... • Native species often outnumber invasive species. However within 5 to 10 years, Invasive Species severely outnumber the native species. How does this occur? ...
... • Native species often outnumber invasive species. However within 5 to 10 years, Invasive Species severely outnumber the native species. How does this occur? ...
Sample Exam IV Questions, November 17, 2006
... e. All of the above 3) If the position of each individual in a local area is determined by territorial interactions between neighbors, then the resulting pattern of dispersion is going to be a. clumped b. uniform c. random d. rectangular e. complex. 4) Gause’s Competitive Exclusion Principle states ...
... e. All of the above 3) If the position of each individual in a local area is determined by territorial interactions between neighbors, then the resulting pattern of dispersion is going to be a. clumped b. uniform c. random d. rectangular e. complex. 4) Gause’s Competitive Exclusion Principle states ...
Ecosystems and communities
... Tolerance: the range of conditions under which an organism can survive and reproduce. ...
... Tolerance: the range of conditions under which an organism can survive and reproduce. ...
Biology 7 Group Project Guidelines – Spring 2015
... How many members of the species are estimated to be alive in the wild today and how does this compare to the critical number (if known)? What are the reasons for its decline (poaching, disease, loss of habitat, etc)? Why should the average human care? 3. What approaches are being taken to incr ...
... How many members of the species are estimated to be alive in the wild today and how does this compare to the critical number (if known)? What are the reasons for its decline (poaching, disease, loss of habitat, etc)? Why should the average human care? 3. What approaches are being taken to incr ...
Section 2 - Net Start Class
... Mutualism – association between members of two species in which both members benefit from the association Commensalism – relationship between two organisms of different species in which one organism benefits from the association and the other is neither ...
... Mutualism – association between members of two species in which both members benefit from the association Commensalism – relationship between two organisms of different species in which one organism benefits from the association and the other is neither ...
Community Ecology
... Interspecific Competition • Competition between species for resources that share the same habitat • Predators competing for prey • Plants competing for soil ...
... Interspecific Competition • Competition between species for resources that share the same habitat • Predators competing for prey • Plants competing for soil ...
Loss of Biodiversity
... • Result is that pieces of the habitat become islands; allowing fewer species to live there • The smaller the population=more vulnerable to further disturbance or climate change ...
... • Result is that pieces of the habitat become islands; allowing fewer species to live there • The smaller the population=more vulnerable to further disturbance or climate change ...
Introduced species
An introduced, alien, exotic, non-indigenous, or non-native species, or simply an introduction, is a species living outside its native distributional range, which has arrived there by human activity, either deliberate or accidental. Non-native species can have various effects on the local ecosystem. Introduced species that become established and spread beyond the place of introduction are called invasive species. Some have a negative effect on a local ecosystem. Some introduced species may have no negative effect or only minor impact. Some species have been introduced intentionally to combat pests. They are called biocontrols and may be regarded as beneficial as an alternative to pesticides in agriculture for example. In some instances the potential for being beneficial or detrimental in the long run remains unknown. A list of some introduced species is given in a separate article.The effects of introduced species on natural environments have gained much scrutiny from scientists, governments, farmers and others.