SOME IMPORTANT ECOLOGICAL TERMS 5.1.1 Population: All living things of the same species in a habitat at any one time. Ex. Panda population in China in 1989 Community: All the living things in a habitat or ecosystem‚ the total of all populations. Species: A group of individuals of common ancestry that closely resemble each other and that are normally capable of interbreeding to produce fertile offspring. Biosphere: The inhabited part of the Earth. All ecosystems on Earth. NICHE = both the habitat
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Niche Wars David Scott Smith-3/27/2013 Introduction: This report discusses an experiment to study the relationship between the ecological niche and competition. The hypothesis formulated states that if competition traits are identical and resources are abundant than multiple species will be able to coexist‚ and if one species has an advantage over the others than this species will be more likely to out compete another species for resources. The objective of this experiment is to use a simulation
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The Sanchez family is a large extended family living in a Latino community in the Midwest. Hector and Celia are married with six children Junior‚ Emmilia‚ Vicki‚ Gloria‚ Alejandro‚ and Carmen. Hector and Celia also have one grandson Joey and nephew Roberto Salazar. The member of the Sanchez family are experiencing unique problems and has requested help from a social worker. For this analysis I will look exclusively at Hector and Gloria and use theoretical approaches to determine what would be the
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measure of the total dry mass of organisms in a given area. Energy Pyramid: A diagram that compares energy used by producers. Ecological Pyramids: Diagram that shows the relative amount of energy or matter within each trophic level of a food chain or web. Habitat: Can be described as all of the biotic and abiotic factors in the area where an organism lives. Ecological niche: Composed of all the physical‚ chemical‚ and biological factors that a species needs to survive. Competitive exclusion: States
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Key Terms (Bio3_Exam3) Amniote – A group of organisms including reptiles‚ mammals and birds whose offspring develop initially internally. Body Cavity – A fluid or air filled space located between the digestive tract and the outer body wall. Also known as a coelom. Body Plan – Particular set of morphological and developmental traits integrated into a functional whole. Bottom–up Regulation – The study of how applying a pressure to the base of a food chain affects the links above it. Carnivorous
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Salt‚ water‚ temperature Rain temperature‚ soil How big‚ water ph Soil‚ wind‚ temp‚ Temp‚ Biotic (living) factors Trees‚ rabbits‚ insects‚ birds… Lions‚ snakes Fish‚ plankton‚ Birds‚ monkeys bacteria‚ Insects‚ bacteria Animals 3. Give examples of ecological studies performed at the population‚ community‚ and ecosystem level. POPULATION- ecologist study the deer population in the north west or they study the population of rattle snakes in AZ. They study the size of the population and how it changes
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environment. They also suggest that sleep has evolved because it conserves energy and coincides with their eating habits. The evolutionary explanation (also referred to as the ecological approach) is based on the observation of animals in their natural environment. The evolutionary approach to sleep has focused on ecological niches. These refer to the lifestyle of animals‚ i.e how and where they live‚ and involves many factors that have been shown to be relevant to sleep. The evolutionary approach states
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consumed by an organism. ECOLOGICAL NICHE * Describes how an organism or population responds to the distribution of resources and competitors and how it in turn alters those same factors. * Consists of all the factors necessary for its existence – approximately when‚ where‚ and how a species makes its living. a. Fundamental Niche – the full potential range of conditions and resources it could theoretically use if there were no competition from other species. Niches of a species overlap
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extinction of a species typically takes such a long time that it is not easy to document. Second‚ we have identified only about 1.8 million of the world’s estimated 4 million to 100 million species. Third‚ scientists know little about the nature and ecological roles of most of the species that have been identified. These are the reasons why extinction experts believe that
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different from members of other species. They have similar genes and therefore closely resemble one another physically and biochemically. They have similar patterns in development and similar immunological features and they occupy the same ecological niche. An ecological niche is all the conditions and resources required for an organism to survive‚ reproduce and maintain a viable population. Secondly they are capable of breeding to produce living‚ fertile offspring. They are therefore able to successfully
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