Lecture #10 Slides
... Early successional species have no effect on later colonists, succession depends on dispersal capabilities and abiotic factors. ...
... Early successional species have no effect on later colonists, succession depends on dispersal capabilities and abiotic factors. ...
Development of Seed Transfer Zones for Two Title text here
... In 2008 Region One initiated its Seed Transfer Zone Study to determine seed transfer guidelines for core revegetation species. 2011 represents its fourth year of this effort. Each year, two species are selected for common garden study. Red osier dogwood (Cornus sericea ssp. sericea) and shinyleaf sp ...
... In 2008 Region One initiated its Seed Transfer Zone Study to determine seed transfer guidelines for core revegetation species. 2011 represents its fourth year of this effort. Each year, two species are selected for common garden study. Red osier dogwood (Cornus sericea ssp. sericea) and shinyleaf sp ...
Environmental Science Study Guide for Chapter 8 (Changing
... 12. What type of growth is logarithmic growth or growth in which numbers increase by a certain factor in each successive time period? Exponential 13. What conditions have to be in place for exponential growth to occur in nature? plenty of food and space, and have no competition or predators. 14. Und ...
... 12. What type of growth is logarithmic growth or growth in which numbers increase by a certain factor in each successive time period? Exponential 13. What conditions have to be in place for exponential growth to occur in nature? plenty of food and space, and have no competition or predators. 14. Und ...
APES
... and so are more open to new species. Also, the native residents of these small ecosystems—surrounded by fewer species than their counterparts in large continental ecosystems—are evolutionarily less fit to compete against invaders. "The balance of relatively simple communities of plants and animals i ...
... and so are more open to new species. Also, the native residents of these small ecosystems—surrounded by fewer species than their counterparts in large continental ecosystems—are evolutionarily less fit to compete against invaders. "The balance of relatively simple communities of plants and animals i ...
Niche, refers to the role that a species plays within its ecosystem. In
... resources, etc. A pest is any organism that man believes is undesirable, has a negative impact on the human environment, or is in competition with human use of a resource, either natural, or cultivated. Early Pesticide Use: ...
... resources, etc. A pest is any organism that man believes is undesirable, has a negative impact on the human environment, or is in competition with human use of a resource, either natural, or cultivated. Early Pesticide Use: ...
chapt5final
... – Predation occurs when a member of one species (predator) feeds directly on all or part of a member of another species (prey). Symbiosis= close, long term association 2 or more species: 3 types – Parasitism + - occurs when one organism (the parasite) feeds on another organism (the host), usually by ...
... – Predation occurs when a member of one species (predator) feeds directly on all or part of a member of another species (prey). Symbiosis= close, long term association 2 or more species: 3 types – Parasitism + - occurs when one organism (the parasite) feeds on another organism (the host), usually by ...
Pisaster Disaster PSI AP Biology
... 1. Elephants are a keystone species in African grasslands. African grasslands are a diverse ecosystem that supports grasses, trees, herbivores, carnivores, and decomposers. Elephants maintain this diversity by feeding on and destroying trees. What do you think might happen if elephants were removed ...
... 1. Elephants are a keystone species in African grasslands. African grasslands are a diverse ecosystem that supports grasses, trees, herbivores, carnivores, and decomposers. Elephants maintain this diversity by feeding on and destroying trees. What do you think might happen if elephants were removed ...
Invasive Species
... fewer species therefore it has low immigration and high extinction rates Distance from nearest mainlandAssuming equal rate of extinction on two islands, one closer to mainland ...
... fewer species therefore it has low immigration and high extinction rates Distance from nearest mainlandAssuming equal rate of extinction on two islands, one closer to mainland ...
Community Composition, Interactions, and Productivity
... in aquatic habitats is essential to the study of ecology, particularly in the fields of conservation biology and fisheries management. • Species over-exploitation, habitat destruction, and introduction of exotic (alien) species by human activities has lead to dramatic community alterations and speci ...
... in aquatic habitats is essential to the study of ecology, particularly in the fields of conservation biology and fisheries management. • Species over-exploitation, habitat destruction, and introduction of exotic (alien) species by human activities has lead to dramatic community alterations and speci ...
Outline 10
... Natural selection causes changes in each lineage. Species selection causes changes in the numbers of species with different properties. Species selection results from differences in the rate of speciation and extinction. Once a species makes an adaptive transition, the descendant species may have su ...
... Natural selection causes changes in each lineage. Species selection causes changes in the numbers of species with different properties. Species selection results from differences in the rate of speciation and extinction. Once a species makes an adaptive transition, the descendant species may have su ...
Geography of Evolution 2
... close to southeast Asia today, Australian flora and fauna are very different from that found in Asia. Wallace noted the abrupt transition of plants and animals across the islands of Indonesia. ...
... close to southeast Asia today, Australian flora and fauna are very different from that found in Asia. Wallace noted the abrupt transition of plants and animals across the islands of Indonesia. ...
EXAM REVIEW Chapter41 - (per 3) and wed 4/24 (per 2,6)
... • Species often alter the habitat in ways that allow other species to replace them (ecological succession) • The first, opportunistic colonizers of new or newly vacated habitats are pioneer species, which have high dispersal rates, grow and mature fast, and produce many offspring • pioneer species • ...
... • Species often alter the habitat in ways that allow other species to replace them (ecological succession) • The first, opportunistic colonizers of new or newly vacated habitats are pioneer species, which have high dispersal rates, grow and mature fast, and produce many offspring • pioneer species • ...
Understanding Our Environment
... Predator-mediated competition - one species may be the best competitor in a given location, but predators may reduce its abundance and allow the weaker competitor to increase its numbers ...
... Predator-mediated competition - one species may be the best competitor in a given location, but predators may reduce its abundance and allow the weaker competitor to increase its numbers ...
Geographical shifts - IUCN Academy of Environmental Law
... Not in the US endangered species list Very much sensitive to temperatures Disappearing from lower elevations. In Yosemite National Park: from 7800 feet to 9500 feet in 90 years (Ruhl 2008) Nine out of 25 known pika populations in the Great Basin of Nevada and Utah disappeared over the past c ...
... Not in the US endangered species list Very much sensitive to temperatures Disappearing from lower elevations. In Yosemite National Park: from 7800 feet to 9500 feet in 90 years (Ruhl 2008) Nine out of 25 known pika populations in the Great Basin of Nevada and Utah disappeared over the past c ...
Practice Questions
... 21. As you study two closely related predatory insect species, the two-spot and the three-spot avenger beetles, you notice that each species seeks prey at dawn in areas without the other species. However, where their ranges overlap, the two-spot avenger beetle hunts at night and the three-spot hu ...
... 21. As you study two closely related predatory insect species, the two-spot and the three-spot avenger beetles, you notice that each species seeks prey at dawn in areas without the other species. However, where their ranges overlap, the two-spot avenger beetle hunts at night and the three-spot hu ...
APES-Unit #3- Study Guide
... 2: What is aquaculture and what problems are associated with farming such species as Salmon? 3: Explain why some people suggest that we eat “lower on the food chain”. 4: Explain why the technique of bottom trawling is so bad for the marine environment. 5: When was the Endangered Species Act enacted ...
... 2: What is aquaculture and what problems are associated with farming such species as Salmon? 3: Explain why some people suggest that we eat “lower on the food chain”. 4: Explain why the technique of bottom trawling is so bad for the marine environment. 5: When was the Endangered Species Act enacted ...
DOC - Brown University
... populations didn't block out the sun or take up other limiting resources, and show even more similarities and differences between the exotic plants and the native monoculture species. What do you expect to see in the results when we compare the native monoculture quadrats to the exotic species quadr ...
... populations didn't block out the sun or take up other limiting resources, and show even more similarities and differences between the exotic plants and the native monoculture species. What do you expect to see in the results when we compare the native monoculture quadrats to the exotic species quadr ...
Threatened species projects (Stream two) Threatened species
... Many of Victoria’s native plant and animal species are now considered threatened, vulnerable or moving towards extinction. ...
... Many of Victoria’s native plant and animal species are now considered threatened, vulnerable or moving towards extinction. ...
Management of Grassy Ecosystems-Arthur Rylah Institute for
... productivity in native grasslands and grassy woodlands that remain on Victorian farms and provide farmer and other land managers with current knowledge and skills to manage their native grasslands. Victoria’s grassy communities have been severely altered through 150 years or more of grazing and cult ...
... productivity in native grasslands and grassy woodlands that remain on Victorian farms and provide farmer and other land managers with current knowledge and skills to manage their native grasslands. Victoria’s grassy communities have been severely altered through 150 years or more of grazing and cult ...
Current factors affecting UK woodlands and
... The inadvertent transport of pests and pathogens beyond natural ranges, or the expansion of territorial range through environmental change, is a current phenomenon with significant future implications for natural and managed woodland systems. For free moving species, such as insects capable of fligh ...
... The inadvertent transport of pests and pathogens beyond natural ranges, or the expansion of territorial range through environmental change, is a current phenomenon with significant future implications for natural and managed woodland systems. For free moving species, such as insects capable of fligh ...
Sarah Goodspeed Alien Invaders The problems with invasive
... reproduce rapidly, the study highlights the importance of spatial geometry for understanding invasion relationships. Under these propagation conditions, invasive species will be more likely to succeed when striking in a large cluster or as multiple small clusters. ...
... reproduce rapidly, the study highlights the importance of spatial geometry for understanding invasion relationships. Under these propagation conditions, invasive species will be more likely to succeed when striking in a large cluster or as multiple small clusters. ...
Species Interactions and Community Structure
... Power : Keystone species exert strong effects on their community structure, despite low biomass. ...
... Power : Keystone species exert strong effects on their community structure, despite low biomass. ...
Genetic diversity
... Why do we care? Genetic diversity increases the chance that some members will survive environmental change Less likely in small and isolated populations Bottlenecking – genetic diversity in the resulting populations is severely decreased ...
... Why do we care? Genetic diversity increases the chance that some members will survive environmental change Less likely in small and isolated populations Bottlenecking – genetic diversity in the resulting populations is severely decreased ...
Sci7U1Ecosystems2003
... • Habitat Loss – Urbanization (city building) • Endangered and Extinct Species • Introduced Species – native species (fox and polar bear) and introduced species (moose). ...
... • Habitat Loss – Urbanization (city building) • Endangered and Extinct Species • Introduced Species – native species (fox and polar bear) and introduced species (moose). ...
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.