Lesson 8: How Do New Species Emerge?
... Tell students that this is one possible set of mechanisms of evolution that scientists have proposed that could lead to speciation, but is not the only combination of possibilities. This set of mechanisms involved: 1) mutation leading to slightly different populations in an ecosystem with two distin ...
... Tell students that this is one possible set of mechanisms of evolution that scientists have proposed that could lead to speciation, but is not the only combination of possibilities. This set of mechanisms involved: 1) mutation leading to slightly different populations in an ecosystem with two distin ...
2.1 Evolutionary Advantages of Sexual and Asexual Reproduction
... This can become a competitive edge if the organism lives in an environment that is often disturbed, and they are particularly well suited to a certain environment or habitat. Asexual reproduction in plants is far more common in harsh environments where there is little margin for variation. ...
... This can become a competitive edge if the organism lives in an environment that is often disturbed, and they are particularly well suited to a certain environment or habitat. Asexual reproduction in plants is far more common in harsh environments where there is little margin for variation. ...
Environmental Science
... activity; and 1 point was earned for describing how logging can “destroy many species habitats.” One point was earned in part (c) for describing “but rather leave some trees up while taking only some trees out of the forest” as an alternative to logging by clear-cutting a forest. No points were give ...
... activity; and 1 point was earned for describing how logging can “destroy many species habitats.” One point was earned in part (c) for describing “but rather leave some trees up while taking only some trees out of the forest” as an alternative to logging by clear-cutting a forest. No points were give ...
Scale and species numbers
... versus regional species richness for sites of similar size and structure33,34. If local richness is determined by statistical sampling processes, a linear (Type I) relationship is predicted, whereas non-linear (Type II) saturating relationships might indicate other processes at work. The exact natur ...
... versus regional species richness for sites of similar size and structure33,34. If local richness is determined by statistical sampling processes, a linear (Type I) relationship is predicted, whereas non-linear (Type II) saturating relationships might indicate other processes at work. The exact natur ...
Godfrey SCJ, Lawton JH, 2001. Scale and species
... versus regional species richness for sites of similar size and structure33,34. If local richness is determined by statistical sampling processes, a linear (Type I) relationship is predicted, whereas non-linear (Type II) saturating relationships might indicate other processes at work. The exact natur ...
... versus regional species richness for sites of similar size and structure33,34. If local richness is determined by statistical sampling processes, a linear (Type I) relationship is predicted, whereas non-linear (Type II) saturating relationships might indicate other processes at work. The exact natur ...
Exam 2: Samples - Faculty Web Pages
... 4. What is the difference in the adaptation of a sled dog’s (such as a Husky) thick coat of hair to help it withstand the cold temperatures of Arctic winters and a dog that adapts to cold temperatures in the fall by growing a thickened coat? The adaptation of the sled dog best describes adaptation a ...
... 4. What is the difference in the adaptation of a sled dog’s (such as a Husky) thick coat of hair to help it withstand the cold temperatures of Arctic winters and a dog that adapts to cold temperatures in the fall by growing a thickened coat? The adaptation of the sled dog best describes adaptation a ...
Competition in Triclads
... • Lab and field experiments to look at competition between triclads and leeches. • Look at competition under two “conditions” of a shared prey. • Discrepancy: niche overlap but they still coexist ...
... • Lab and field experiments to look at competition between triclads and leeches. • Look at competition under two “conditions” of a shared prey. • Discrepancy: niche overlap but they still coexist ...
Scaling of ecological dominance and resilience in kelp communities
... by sea urchins in large fronts, the formation of which reflect available kelp detrital food and reduced predation by several urchin carnivores. When released from predation, amphipods can denude Macrocystis, and heavy settlement of epiphytic organisms can sink or stress Macrocystis, suggesting stabi ...
... by sea urchins in large fronts, the formation of which reflect available kelp detrital food and reduced predation by several urchin carnivores. When released from predation, amphipods can denude Macrocystis, and heavy settlement of epiphytic organisms can sink or stress Macrocystis, suggesting stabi ...
Lesson 1 Populations key terms
... upper layers of the water This means they are both able to be successful in the same ecosystem. ...
... upper layers of the water This means they are both able to be successful in the same ecosystem. ...
Ecology and Interactionswoyce
... Pollinators are organisms that carry pollen from one flower to another. What is an example of a pollinator? Pollination is necessary for reproduction in most plants. Over millions of years, flowers have changed to attract certain pollinators! Flowers attract pollinators with their color, o ...
... Pollinators are organisms that carry pollen from one flower to another. What is an example of a pollinator? Pollination is necessary for reproduction in most plants. Over millions of years, flowers have changed to attract certain pollinators! Flowers attract pollinators with their color, o ...
Abiotic Biotic
... Introduction In ecology and biology, abiotic components are non-living chemical and physical factors in the environment which affect ecosystems. Examples Water, light, wind, soil, humidity, minerals, gases. ...
... Introduction In ecology and biology, abiotic components are non-living chemical and physical factors in the environment which affect ecosystems. Examples Water, light, wind, soil, humidity, minerals, gases. ...
55_DetailLectOut_jkAR
... Forest fragmentation is occurring at a rapid rate in tropical forests. In almost all cases, habitat fragmentation leads to species loss, since the smaller populations in habitat fragments have a higher probability of local extinction. The prairies of southern Wisconsin now occupy less than 0.1 ...
... Forest fragmentation is occurring at a rapid rate in tropical forests. In almost all cases, habitat fragmentation leads to species loss, since the smaller populations in habitat fragments have a higher probability of local extinction. The prairies of southern Wisconsin now occupy less than 0.1 ...
3A Chapter 8, 11 ,12 Guided Notes
... everywhere and are effected quickly by environment changes. The disappearance of many of the world’s _____________________ species may indicate a _________________in environmental quality in many parts of the world. Amphibian loss and decline is caused by many factors. These include- habitat los ...
... everywhere and are effected quickly by environment changes. The disappearance of many of the world’s _____________________ species may indicate a _________________in environmental quality in many parts of the world. Amphibian loss and decline is caused by many factors. These include- habitat los ...
Species - HCC Learning Web
... • A hybrid zone is a region in which members of different species mate and produce hybrids • Hybrids are the result of mating between species with incomplete reproductive barriers ...
... • A hybrid zone is a region in which members of different species mate and produce hybrids • Hybrids are the result of mating between species with incomplete reproductive barriers ...
Biology 103 - Radford University
... environmental biologists check the quality of such resources is to assess their biodiversity. All else being equal, high biodiversity is a sign of a high quality, unpolluted resource, while low biodiversity may indicate a polluted resource. Being able to determine whether a body of water is polluted ...
... environmental biologists check the quality of such resources is to assess their biodiversity. All else being equal, high biodiversity is a sign of a high quality, unpolluted resource, while low biodiversity may indicate a polluted resource. Being able to determine whether a body of water is polluted ...
Concluding Remarks
... B corresponding to any of the points in N1 , then B will be said to be incomplete relative to Sl . If some of the points in N1 are represented in B then the latter is partially incomplete relative to Si , if all the points in N1 are represented in B the latter is complete relative to Sl . Limitation ...
... B corresponding to any of the points in N1 , then B will be said to be incomplete relative to Sl . If some of the points in N1 are represented in B then the latter is partially incomplete relative to Si , if all the points in N1 are represented in B the latter is complete relative to Sl . Limitation ...
What is an Ecosystem?
... • Together, these three zones make up the biosphere. • The biosphere – is the narrow zone around Earth that harbours life. ...
... • Together, these three zones make up the biosphere. • The biosphere – is the narrow zone around Earth that harbours life. ...
NPRB_RFP_Topic_selection_options
... needed to make ecologically sound and management effective decisions. At the same time, determining numbers and rates of movement can help elucidate trophic characteristics of the ocean region being studied. Marine fish exhibit large seasonal movements that influence overlap of predator and prey, as ...
... needed to make ecologically sound and management effective decisions. At the same time, determining numbers and rates of movement can help elucidate trophic characteristics of the ocean region being studied. Marine fish exhibit large seasonal movements that influence overlap of predator and prey, as ...
Competition Theory, Hypothesis-Testing, and Other Community
... anticipates new facts. But eventuallythere must be a willingnessto confront theorywithcontradictory data in a decisive manner;Lakatos (1970, p. 179) allows only that "a budding research programme . . . should be sheltered for a while . . . " (myitalics). My complaintis thatcommunitytheoryhas been sh ...
... anticipates new facts. But eventuallythere must be a willingnessto confront theorywithcontradictory data in a decisive manner;Lakatos (1970, p. 179) allows only that "a budding research programme . . . should be sheltered for a while . . . " (myitalics). My complaintis thatcommunitytheoryhas been sh ...
On the stabilizing effect of predators and competitors on ecological
... upon a bistable community, thus complementing Kirlingers (1986) work on two-prey, two-predator systems. We shall also investigate the effect of a predator (or a competitor) upon an ecological community consisting of three cyclically competing species which was originally studied by May and Leonard ( ...
... upon a bistable community, thus complementing Kirlingers (1986) work on two-prey, two-predator systems. We shall also investigate the effect of a predator (or a competitor) upon an ecological community consisting of three cyclically competing species which was originally studied by May and Leonard ( ...
Ecological Consequences of Doubling the Atmospheric CO2
... oceans. On a time scale that covers the short-term and the medium-term (i.e., up to 10 years), there should be measurable changes in the outputs of the local ecosystem services domain. The net primary productivity (NPP), from both terrestrial and aquatic producers, is one of the critical outputs of ...
... oceans. On a time scale that covers the short-term and the medium-term (i.e., up to 10 years), there should be measurable changes in the outputs of the local ecosystem services domain. The net primary productivity (NPP), from both terrestrial and aquatic producers, is one of the critical outputs of ...
BCPS Biology Reteaching Guide Ecology Vocab Card Definitions
... An organism that makes its own food. Ex: plants, algae and types of bacteria ...
... An organism that makes its own food. Ex: plants, algae and types of bacteria ...
Chapter 53: Population Ecology
... The next three chapters on population, community, and ecosystem ecology provide the academic backbone for this unit on ecology. Each chapter considers a different organizational level in ecology, starting with population ecology. Before beginning your study of each chapter, be sure you have a clear ...
... The next three chapters on population, community, and ecosystem ecology provide the academic backbone for this unit on ecology. Each chapter considers a different organizational level in ecology, starting with population ecology. Before beginning your study of each chapter, be sure you have a clear ...
AP Biology - Summer assignment
... 2. For one of your species, draw and explain a survivorship curve that would represent the pattern of survival found in that species. 3. Discuss limiting factors that would be present in your ecosystem. Be sure to define them as density-dependent and density-independent. 4. Which organism in your co ...
... 2. For one of your species, draw and explain a survivorship curve that would represent the pattern of survival found in that species. 3. Discuss limiting factors that would be present in your ecosystem. Be sure to define them as density-dependent and density-independent. 4. Which organism in your co ...
Ecological fitting
Ecological fitting is ""the process whereby organisms colonize and persist in novel environments, use novel resources or form novel associations with other species as a result of the suites of traits that they carry at the time they encounter the novel condition.” It can be understood as a situation in which a species' interactions with its biotic and abiotic environment seem to indicate a history of coevolution, when in actuality the relevant traits evolved in response to a different set of biotic and abiotic conditions. The simplest form of ecological fitting is resource tracking, in which an organism continues to exploit the same resources, but in a new host or environment. In this framework, the organism occupies a multidimensional operative environment defined by the conditions in which it can persist, similar to the idea of the Hutchinsonian niche. In this case, a species can colonize new environments (e.g. an area with the same temperature and water regime) and/or form new species interactions (e.g. a parasite infecting a new host) which can lead to the misinterpretation of the relationship as coevolution, although the organism has not evolved and is continuing to exploit the same resources it always has. The more strict definition of ecological fitting requires that a species encounter an environment or host outside of its original operative environment and obtain realized fitness based on traits developed in previous environments that are now co-opted for a new purpose. This strict form of ecological fitting can also be expressed either as colonization of new habitat or the formation of new species interactions.