interspecific interactions
... Ecological succession is the sequence of community and ecosystem changes after a disturbance Primary succession occurs where no soil exists when succession begins Secondary succession begins in an area where soil remains after a disturbance Early arrivals may facilitate the appearance of lat ...
... Ecological succession is the sequence of community and ecosystem changes after a disturbance Primary succession occurs where no soil exists when succession begins Secondary succession begins in an area where soil remains after a disturbance Early arrivals may facilitate the appearance of lat ...
Module B: Unit 1, Lesson 2 – Theory of
... What are the four parts of natural selection? • Natural selection is the process by which organisms that inherit advantageous traits tend to reproduce more successfully. • When a plant or an animal reproduces, it usually makes more offspring than the environment can support. • Only some of the orga ...
... What are the four parts of natural selection? • Natural selection is the process by which organisms that inherit advantageous traits tend to reproduce more successfully. • When a plant or an animal reproduces, it usually makes more offspring than the environment can support. • Only some of the orga ...
2.6.5-.7 Succession
... during succession for many organisms, is that the presence of these organisms (themselves) essentially alters the environment (eg. shade, pH, moisture, temperature, chemical composition) sufficiently so that it is no longer suitable for their own offspring to continue. ...
... during succession for many organisms, is that the presence of these organisms (themselves) essentially alters the environment (eg. shade, pH, moisture, temperature, chemical composition) sufficiently so that it is no longer suitable for their own offspring to continue. ...
Types of Selection
... In one form of mimicry, a harmless species has adaptations that result in a physical resemblance to a harmful species. Predators that avoid the harmful looking species also avoid the similar-looking harmless species. ...
... In one form of mimicry, a harmless species has adaptations that result in a physical resemblance to a harmful species. Predators that avoid the harmful looking species also avoid the similar-looking harmless species. ...
Habitat and Biodiversity - Berkshire Regional Planning Commission
... and improve the overall resilience of a habitat to climate change impacts. These areas cover approximately 43% of the county land and are shown in yellow. 45% of these lands are protected from development. Waters of the Berkshires: Despite being impaired by pollution, the Housatonic and Hoosic River ...
... and improve the overall resilience of a habitat to climate change impacts. These areas cover approximately 43% of the county land and are shown in yellow. 45% of these lands are protected from development. Waters of the Berkshires: Despite being impaired by pollution, the Housatonic and Hoosic River ...
February 4, 2010 - Rochester Community Schools
... • Competition: more than one organism uses one resource at the same time – Food – Reproduction (competition within population) – Shelter – Water ...
... • Competition: more than one organism uses one resource at the same time – Food – Reproduction (competition within population) – Shelter – Water ...
draft - Department of Natural Resources
... Disturbance: the disruption in growth of an individual, population or community of species due to natural or anthropogenic (human) factors such as herbivory, forest fires, road building, disease infestation and tree harvesting. Dispersed recreation: recreation taking place outside of developed sites ...
... Disturbance: the disruption in growth of an individual, population or community of species due to natural or anthropogenic (human) factors such as herbivory, forest fires, road building, disease infestation and tree harvesting. Dispersed recreation: recreation taking place outside of developed sites ...
Answers to Mastering Concepts Questions
... extinction of a species, that typically occur over long periods of time. Small-scale microevolutionary events occur over shorter time periods, such as the changes in allele frequencies that occur each generation within a species. Over many generations, microevolutionary events can lead to macroevolu ...
... extinction of a species, that typically occur over long periods of time. Small-scale microevolutionary events occur over shorter time periods, such as the changes in allele frequencies that occur each generation within a species. Over many generations, microevolutionary events can lead to macroevolu ...
File
... genes. Example: blue eyes. 29. Acquired Trait – characteristics that are not passed down but instead "acquired" after birth. Example of this is: scars, pierced ears, the length of your hair, the loss of a limb. 30. Natural selection – Process by which individuals that are better adapted to the envir ...
... genes. Example: blue eyes. 29. Acquired Trait – characteristics that are not passed down but instead "acquired" after birth. Example of this is: scars, pierced ears, the length of your hair, the loss of a limb. 30. Natural selection – Process by which individuals that are better adapted to the envir ...
Ch 3.5 Non-Native Species
... - Pesticides are used mostly in forests and agriculture because of their economic importance. - There risks with pesticides, they sometime target native species also. Mechanical Control - Physical barriers or removal is used to control invasive species. Biological Control - Biological control is ver ...
... - Pesticides are used mostly in forests and agriculture because of their economic importance. - There risks with pesticides, they sometime target native species also. Mechanical Control - Physical barriers or removal is used to control invasive species. Biological Control - Biological control is ver ...
Chapter 7: Community Ecology
... long-lived plant species that is in balance with its environment. Three factors have been identified that affect how and at what rate succession occurs: 1. facilitation (an area is made suitable for a second species by the actions of the first) 2. inhibition (early species delay establishment of la ...
... long-lived plant species that is in balance with its environment. Three factors have been identified that affect how and at what rate succession occurs: 1. facilitation (an area is made suitable for a second species by the actions of the first) 2. inhibition (early species delay establishment of la ...
Discussion
... Gene flow between species of Heliconius Another area of great interest in speciation research is that of the potential for gene flow between species, mediated by occasional hybridisation. If species do mate in the wild to form hybrids, however rarely, it may be expected that some introgression will ...
... Gene flow between species of Heliconius Another area of great interest in speciation research is that of the potential for gene flow between species, mediated by occasional hybridisation. If species do mate in the wild to form hybrids, however rarely, it may be expected that some introgression will ...
Designing an Ecological Study
... Ecology can be defined as the study of ecological systems. A system is any set of components, living or nonliving, that are tied together by regular interactions. An ecological system is made up of one or more organisms, together with the nonliving environment with which they interact. Ecological sy ...
... Ecology can be defined as the study of ecological systems. A system is any set of components, living or nonliving, that are tied together by regular interactions. An ecological system is made up of one or more organisms, together with the nonliving environment with which they interact. Ecological sy ...
Ecosystem Structure and Roles
... Resource partitioning • Dividing up scarce resources so that species with similar requirements can use them at different times, or in different ways, or in different places • Examples: – Wetlands – Warblers in Spruce trees ...
... Resource partitioning • Dividing up scarce resources so that species with similar requirements can use them at different times, or in different ways, or in different places • Examples: – Wetlands – Warblers in Spruce trees ...
Section 2 Patterns in Communities Chapter 20 Species Richness
... Species Richness, continued • Community Stability and Species Richness – Disturbances can alter a community by eliminating or removing organisms or altering resource availability. – Species richness may improve a community’s stability. – Areas of low species richness may be less stable in the event ...
... Species Richness, continued • Community Stability and Species Richness – Disturbances can alter a community by eliminating or removing organisms or altering resource availability. – Species richness may improve a community’s stability. – Areas of low species richness may be less stable in the event ...
Food web
... hears one of the characters mention the term biosphere. Jason has never heard the term before and looks it up. Which would be included in the definition of biosphere? A. All parts of the earth where life can survive. B. Regions of the earth where many organisms live C. The inner core, the continents ...
... hears one of the characters mention the term biosphere. Jason has never heard the term before and looks it up. Which would be included in the definition of biosphere? A. All parts of the earth where life can survive. B. Regions of the earth where many organisms live C. The inner core, the continents ...
does metabolic theory apply to community ecology? it`s a matter of
... biomass in 2002 (linear regression: N 5 168, P , 0.0001). Species number and functional group composition explained 68% of this variance in total biomass (multiple regression: F28, 139 5 10.4, P , 0.0001). The scaling approach, which works so well across large scales of body size, predicts at most 1 ...
... biomass in 2002 (linear regression: N 5 168, P , 0.0001). Species number and functional group composition explained 68% of this variance in total biomass (multiple regression: F28, 139 5 10.4, P , 0.0001). The scaling approach, which works so well across large scales of body size, predicts at most 1 ...
Keystone species and Ecosystem
... However the idea illustrates powerfully how the loss of a species from an ecosystem (or the addition of a species that does not “belong” in that ecosystem) can have a profound effect on how thatecosystem works, often to the detriment of humans. The keystone species is often the “top predator” in foo ...
... However the idea illustrates powerfully how the loss of a species from an ecosystem (or the addition of a species that does not “belong” in that ecosystem) can have a profound effect on how thatecosystem works, often to the detriment of humans. The keystone species is often the “top predator” in foo ...
AQA A2 level Biology - Mr Waring`s Biology Blog
... A species is a group of individuals that share similar genes and are capable of breeding with each other to produce fertile offspring. 2 Give an example of a selection pressure that could cause directional selection. Predation, habitat change (any other reasonable suggestion). 3 A fluctuating enviro ...
... A species is a group of individuals that share similar genes and are capable of breeding with each other to produce fertile offspring. 2 Give an example of a selection pressure that could cause directional selection. Predation, habitat change (any other reasonable suggestion). 3 A fluctuating enviro ...
File
... Is deterministic pathway the only way? Idea of stable community fell out of favor Individualistic Perspective (Gleason, 1926) The relationship between coexisting species (communities) as the result of similarities in their requirements and tolerance to the environment. Partly result of chan ...
... Is deterministic pathway the only way? Idea of stable community fell out of favor Individualistic Perspective (Gleason, 1926) The relationship between coexisting species (communities) as the result of similarities in their requirements and tolerance to the environment. Partly result of chan ...
(-) (-) Exploitation competition
... a common, limiting resource, which acts as an intermediate. Ex. depletes the amount of food or fill up all the available space. ...
... a common, limiting resource, which acts as an intermediate. Ex. depletes the amount of food or fill up all the available space. ...
SSC Report to CFMC
... • A review of habitat information (including water quality parameters such as temperature) showed that these could be valuable co-variables that could be used to enhance stock abundance estimates and refine distribution models. • The Caribbean was relatively rich in habitat data relative to other RF ...
... • A review of habitat information (including water quality parameters such as temperature) showed that these could be valuable co-variables that could be used to enhance stock abundance estimates and refine distribution models. • The Caribbean was relatively rich in habitat data relative to other RF ...
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.