Keystone Species Concept
... The Boran - Honeyguide Mutualism • Example of a facultative mutualism between an African people, and a bird, Indicator indicator. • Borans find bee colonies more quickly when guided by the bird • Honeyguides get larvae, wax, and are in less danger from bees ...
... The Boran - Honeyguide Mutualism • Example of a facultative mutualism between an African people, and a bird, Indicator indicator. • Borans find bee colonies more quickly when guided by the bird • Honeyguides get larvae, wax, and are in less danger from bees ...
Information on SPECIES – How do we define them and how can we
... on the basis of morphology, or physical features. This definition is also often useful: sometimes it is not possible to observe whether two organisms interbreed (e.g., different types of whales in the wild) but examining their physical features can help determine how closely they’re related. In gene ...
... on the basis of morphology, or physical features. This definition is also often useful: sometimes it is not possible to observe whether two organisms interbreed (e.g., different types of whales in the wild) but examining their physical features can help determine how closely they’re related. In gene ...
Chapter 1 Answers
... each, however, may be a reduced amount of the tree wherever the other species are present. This competitive exclusion from a portion of the fundamental niche is one example of how organisms engage in resource partitioning in order to minimize interspecific competition. 3. Briefly discuss and give ex ...
... each, however, may be a reduced amount of the tree wherever the other species are present. This competitive exclusion from a portion of the fundamental niche is one example of how organisms engage in resource partitioning in order to minimize interspecific competition. 3. Briefly discuss and give ex ...
APES Succession Friedland0001
... for succession For example,the rocky intertidal zone alongthe Pacificcoastof NorthAmerica ii exposed to the air during low tide and jies under water during high tide. From time to dme, major storms turn over rocks or otherwise clear them of living things.Thesebare rocks can then be colonized through ...
... for succession For example,the rocky intertidal zone alongthe Pacificcoastof NorthAmerica ii exposed to the air during low tide and jies under water during high tide. From time to dme, major storms turn over rocks or otherwise clear them of living things.Thesebare rocks can then be colonized through ...
biodiversity - Teacher Notes
... Migration: Tends to eliminate genetic differences in populations by equalizing allele frequencies: But causes increased diversity in small populations (animal swapping in zoos) Genetic Drift: Change in allele frequency due to random chance (more pronounced in small populations) Bottlenecking: even ...
... Migration: Tends to eliminate genetic differences in populations by equalizing allele frequencies: But causes increased diversity in small populations (animal swapping in zoos) Genetic Drift: Change in allele frequency due to random chance (more pronounced in small populations) Bottlenecking: even ...
Introduction to Wildlife Management
... good of the greatest number (of people) for the longest time. (G. Pinchot) • Resources should be fairly distributed among ...
... good of the greatest number (of people) for the longest time. (G. Pinchot) • Resources should be fairly distributed among ...
Chapter 47
... Two salamanders species overlap in parts of their ranges Removed one species or the other in test plots Control plots unaltered 5 years later, salamander populations were growing in test plot ...
... Two salamanders species overlap in parts of their ranges Removed one species or the other in test plots Control plots unaltered 5 years later, salamander populations were growing in test plot ...
Population and Community Ecology
... http://ibc.lynxeds.com/photo/mountain-elaenia-elaenia-frantzii/bird-sitting-small-tree-branch ...
... http://ibc.lynxeds.com/photo/mountain-elaenia-elaenia-frantzii/bird-sitting-small-tree-branch ...
Chapter 9 Sustaining Biodiversity
... Biological – no longer exist…anywhere Can cause secondary extinction – weakened ecosystem – extinction of some species that had strong ties with one deceased Background extinction rate – low rate 1/million species = 0.0001% Allowed for balance between extinction and formation of new species ...
... Biological – no longer exist…anywhere Can cause secondary extinction – weakened ecosystem – extinction of some species that had strong ties with one deceased Background extinction rate – low rate 1/million species = 0.0001% Allowed for balance between extinction and formation of new species ...
Niche
... Its role in the ecosystem (herbivore, carnivore, producer etc) Its tolerance limits (e.g. soil pH, humidity) Its requirements for shelter, nesting sites etc etc, all varying through time ...
... Its role in the ecosystem (herbivore, carnivore, producer etc) Its tolerance limits (e.g. soil pH, humidity) Its requirements for shelter, nesting sites etc etc, all varying through time ...
Chapter 6 Notes
... http://ibc.lynxeds.com/photo/mountain-elaenia-elaenia-frantzii/bird-sitting-small-tree-branch ...
... http://ibc.lynxeds.com/photo/mountain-elaenia-elaenia-frantzii/bird-sitting-small-tree-branch ...
Environmental Science
... species (or individuals) attempt to _________________________________________ such that both are negatively affected by the relationship. • Members of the same species must _______________________________________ other because they require the same resources because they ____________________ _______ ...
... species (or individuals) attempt to _________________________________________ such that both are negatively affected by the relationship. • Members of the same species must _______________________________________ other because they require the same resources because they ____________________ _______ ...
Final Exam Review
... Top down control of community structure (sea urchin example) Trophic cascade Ecosystem engineers (beavers) Bottom up control Limits to food chain length Productivity Ecosystem size Both Community stability Resistance Return time Resilience Persistence Alternative stable strategies Why are some commu ...
... Top down control of community structure (sea urchin example) Trophic cascade Ecosystem engineers (beavers) Bottom up control Limits to food chain length Productivity Ecosystem size Both Community stability Resistance Return time Resilience Persistence Alternative stable strategies Why are some commu ...
Populations and Humans in the Biosphere
... • What is it? The genetically-based variety of all organisms in the biosphere • Species diversity – the number of different species in the biosphere • The greater the biodiversity, the more stable (able to rebound from disturbance) an ecosystem is ...
... • What is it? The genetically-based variety of all organisms in the biosphere • Species diversity – the number of different species in the biosphere • The greater the biodiversity, the more stable (able to rebound from disturbance) an ecosystem is ...
Scientific Method For centuries, people based their beliefs on their
... From this came a number of interesting recipes, such as: Recipe for bees: Kill a young bull, and bury it in an upright position so that its horns protrude from the ground. After a month, a swarm of bees will fly out of the corpse. Recipe for mice: Place a dirty shirt or some rags in an open pot cont ...
... From this came a number of interesting recipes, such as: Recipe for bees: Kill a young bull, and bury it in an upright position so that its horns protrude from the ground. After a month, a swarm of bees will fly out of the corpse. Recipe for mice: Place a dirty shirt or some rags in an open pot cont ...
Worksheet 66 (Practice Exam 6)
... c. They are extremely high in species richness d. They are found mostly in the interior of continents 41.) Which is true of the 6th mass extinction? a. Humans don’t have a role in this extinction b. Invasive species are the only ones to blame for this extinction c. Extinction rates are faster than b ...
... c. They are extremely high in species richness d. They are found mostly in the interior of continents 41.) Which is true of the 6th mass extinction? a. Humans don’t have a role in this extinction b. Invasive species are the only ones to blame for this extinction c. Extinction rates are faster than b ...
H news & views
... drought and non-drought treated plots that included many species. It is surprising that Prieto and colleagues1 found such complementarity among forage crop species in a short-term local-scale experiment. In natural ecosystems, the identity of the most productive plant species varies substantially ac ...
... drought and non-drought treated plots that included many species. It is surprising that Prieto and colleagues1 found such complementarity among forage crop species in a short-term local-scale experiment. In natural ecosystems, the identity of the most productive plant species varies substantially ac ...
Chapter 4 Notes
... 4-1 What is biodiversity and why is it important? CORE CASE STUDY. Some sharks play the role of keystone species in their environments. Nevertheless, about 32% of shark species are threatened with extinction. In addition to the roles sharks play in their environments, science stands to learn many th ...
... 4-1 What is biodiversity and why is it important? CORE CASE STUDY. Some sharks play the role of keystone species in their environments. Nevertheless, about 32% of shark species are threatened with extinction. In addition to the roles sharks play in their environments, science stands to learn many th ...
Sustaining Biodiversity - species Mass extinction events Levels of
... At 1% extinction rate, ¼ to ½ of current species could vanish by end of century; RATE is faster than EVER estimated, even during previous mass extinctions. Humans not present during previous mass extinctions… ...
... At 1% extinction rate, ¼ to ½ of current species could vanish by end of century; RATE is faster than EVER estimated, even during previous mass extinctions. Humans not present during previous mass extinctions… ...
Environmental Studies Spring Review
... transferred into plant tissues, then animals tissues and then back to the atmosphere. All nutrients undergo this process. Water, nitrogen and many others. ...
... transferred into plant tissues, then animals tissues and then back to the atmosphere. All nutrients undergo this process. Water, nitrogen and many others. ...
Population Biology Chapter 4 Section 1
... Reproduce rapidly. Produce many offspring. Have small bodies. Mature rapidly. Have short life spans. Can live in unstable environments. Biotic and abiotic factors fluctuate. ...
... Reproduce rapidly. Produce many offspring. Have small bodies. Mature rapidly. Have short life spans. Can live in unstable environments. Biotic and abiotic factors fluctuate. ...
Ch. 3 Reading questions 1. What is an ecosystem and
... 1. What is an ecosystem and what are its components? 2. How are ecosystem boundaries imposed by humans sometimes different from natural boundaries? 3. What determines the productivity of an ecosystem? 4. How efficiently is energy transferred between trophic levels in and ecosystem? 5. What role does ...
... 1. What is an ecosystem and what are its components? 2. How are ecosystem boundaries imposed by humans sometimes different from natural boundaries? 3. What determines the productivity of an ecosystem? 4. How efficiently is energy transferred between trophic levels in and ecosystem? 5. What role does ...
EXAM REVIEW Chapter41 - (per 3) and wed 4/24 (per 2,6)
... • Red imported fire ants (RIFAs) did not evolve in North America, so there are few predators, parasites, or pathogens to hold them in check • Global climate change is expected to help RIFAs extend their range in the US ...
... • Red imported fire ants (RIFAs) did not evolve in North America, so there are few predators, parasites, or pathogens to hold them in check • Global climate change is expected to help RIFAs extend their range in the US ...
Endangered Animal Project - mrs. cronin`s science class website!
... get water from the leaves they eat Locations in Florida: Zoos Koalas have a commensal relationship with eucalyptus trees. They eat the tree’s leaves and the trees are neither harmed ...
... get water from the leaves they eat Locations in Florida: Zoos Koalas have a commensal relationship with eucalyptus trees. They eat the tree’s leaves and the trees are neither harmed ...
Bifrenaria
Bifrenaria, abbreviated Bif. in horticultural trade, is a genus of plant in family Orchidaceae. It contains 20 species found in Panama, Trinidad and South America. There are no known uses for them, but their abundant, and at first glance artificial, flowers, make them favorites of orchid growers.The genus can be split in two clearly distinct groups: one of highly robust plants with large flowers, that encompass the first species to be classified under the genus Bifrenaria; other of more delicate plants with smaller flowers occasionally classified as Stenocoryne or Adipe. There are two additional species that are normally classified as Bifrenaria, but which molecular analysis indicate to belong to different orchid groups entirely. One is Bifrenaria grandis which is endemic to Bolívia and which is now placed in Lacaena, and Bifrenaria steyermarkii, an inhabitant of the northern Amazon Forest, which does not have an alternative classification.