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Parasites, Disease and the Structure of Ecological Communities
Parasites, Disease and the Structure of Ecological Communities

... population to be characterized by higher intrinsic growth rates than that of its host, while in predatorprey relationships the victim usually has the higher intrinsic growth rate. Similarly, while one or more parasite species may live in one host speciesa, a predator usually uses several different p ...
Chapter 46 PowerPoint
Chapter 46 PowerPoint

... species is capable of using). When present together, each has a different realized niche (all resources a species actually uses). ...
File - Intervention
File - Intervention

... of similar organisms that are capable of interbreeding to produce fertile offspring comprise a species. Populations of different species living in the same place and time are a community. All the communities in the same place at the same time along with their environment form an ecosystem. Ecosystem ...


... Mass Extinction: at the end of the Paleozoic, many organisms died out. Which many types of living things became at the same time. ...
Digestive Direction Sheet - Sonoma Valley High School
Digestive Direction Sheet - Sonoma Valley High School

... A) Be able to discuss and describe examples of predator– prey relationships and how natural selection has resulted in organisms being shaped and colored as they are. (Pages 399-400) B) Discuss two types of mimicry and why it is an advantage for some organisms, such as the King Snake or certain types ...
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native species

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... b. when 2 different species mate, chromosomes from one species can not pair correctly with chromosomes from a different species (homologs) 1. plants may propagate themselves asexually 2. various mechanisms can change subsequent generations to fertile polyploids this is called an allopolyploid - they ...
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Community and Ecosystem Ecology - Moodle
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... • Island size • Distance from source of colonists ...
Chapter 5 Lecture 09
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Succession presentation
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... in the composition of species that occupy a given area through time It involves initial colonisation and establishment of pioneer plant species, followed by their replacement with other species until a relatively stable community is formed Occurs because, through the processes of living, growing and ...
1-2: What are the properties of matter?
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... – Biotic Factors include living organisms in the environment: Plants, animals, bacteria, etc ...
Chapters_23_24_25review.d oc
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An Introduction to Ecology
An Introduction to Ecology

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Filling Key Gaps in Population and Community Ecology
Filling Key Gaps in Population and Community Ecology

... tions. However, we depart from their recommendations in from asking not only whether particular factors have important ways. Theory development in community ecol- detectable effects on community structure, but also quantiogy has been so rapid in the past decade that empirical fying the magnitude of ...
Population Ecology - Effingham County Schools
Population Ecology - Effingham County Schools

... All communities change their structure & composition over time in response to each other & changing environmental conditions Disturbances: change in environmental conditions that disrupts a community or ecosystem. These disturbances can range from mild to catastrophic and can be caused by natural o ...
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... ecosystems. a. The Maya: The Maya claim that the unrestricted logging is exceeding the limits of what the forest can sustain. Animals that they hunt are being scared away by logging activity, and logging during the rainy season increases soil erosion which muddies the rivers they rely on for drinkin ...
Proc for pdf making - Invasive Species Specialist Group
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... for isolated, small populations of species with low reproductive rates and no dormant life stages. Not surprisingly, the most notable successes to date have therefore involved the eradication of vertebrates (especially mammals) from isolated islands. Over the past 20 years, as techniques and confide ...
Communities - Rogue Community College
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... a particular area • Several factors characterize every community – Biodiversity – Prevalent form of vegetation (& its levels) – Response to disturbances – Trophic structure (feeding relationships) ...
Live across secession environments
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... • Succession takes place because through the processes of living, growing and reproducing, organisms interact with and affect the environment within an area, gradually changing it. • Each species is adapted to thrive and compete best against other species under a very specific set of environmental c ...
C:\Users\Jon Stallins\Desktop\Biotic interactions.wpd
C:\Users\Jon Stallins\Desktop\Biotic interactions.wpd

... we are tempted to attribute the whole effect to its direct action. But this is a very false view: we forget that each species, even where it most abounds, is constantly suffering enormous destruction at some period of its life, from enemies or from competitors for the same place and food; and if th ...
Ecological Assessment of mollusc communities in the rocky shores
Ecological Assessment of mollusc communities in the rocky shores

... most abundance among molluscs in the cold season in Deylam – Genaveh region. In the Nayband region, Conus flavidus, Thais savignyi and Chama pacifica were the least abundant species during summer, winter and spring, respectively. Diversity investigation showed that, Nayband in moderate season compri ...
Theology and Science
Theology and Science

...  Proposals should not exceed 250 words. In the submission, please provide your name, institution, and contact information (including e‐mail), as well as a 100-word précis to be posted on the CTSA website should the paper be accepted.  Presenters must be members, associate members, or applicants fo ...
Early 20th century
Early 20th century

... Carl Linnaeus, a Swedish naturalist and inventor of science on the economy of nature, is well known for his work with taxonomy but his ideas helped to lay the groundwork for modern ecology. He developed a two part naming system for classifying plants and animals. Binomial Nomenclature was used to cl ...
final slideshow
final slideshow

... genetic makeup over time. ◦ Populations evolve by becoming genetically different ◦ All species descend from earlier, ancestral species (theory of evolution – this is only one theory… there are others!) ◦ Microevolution: ◦ Macroevolution: ...
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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.
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