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diversity presentation
diversity presentation

... Change in the population of one species affects other species in unstable ecosystem. For example, there is an a ecosystem with plants, rabbits and foxes. If lots of rabbits die, foxes will compete for few number of rabbits and many will starve. If foxes die, the rabbits will overgraze the plants and ...
Exam 6 Review Key
Exam 6 Review Key

... Tropical wet forests: Species diversity, little seasonal variation in temperature, high annual precipitation as well as variation in precipitation. Subtropical deserts: 30-degrees N/S latitude, high annual temps with moderate variation, low precipitation Temperate grasslands: Grasses are dominant li ...
Notes Chapter 21 Community Ecology
Notes Chapter 21 Community Ecology

... 2. Explain how competition can affect community structure. A. Most competition does not involve fighting 1) Some competing species never encounter one another: they interact only by means of their effect on the resource in question B. Competition Research 1) Competition results from fundamental nich ...
Summer Quiz #1 - Plain Local Schools
Summer Quiz #1 - Plain Local Schools

... example of _____. A. Batesian mimicry B. Müllerian mimicry C. cryptic coloration D. interspecific competition E. none of the above 6. The poison-arrow frogs Dendrobates of tropical America are all brightly colored and have very similar patterns. Although each species is distasteful to predators and ...
NS 222 Example questions for first mid
NS 222 Example questions for first mid

... Describe the following biochemical reactions: photosynthesis, respiration. Write the chemical reaction for the formation and destruction of glucose by these processes. Describe the generally expected patterns of succession in terrestrial and aquatic systems. What are the primary nutrients that can l ...
Earth`s Population Growth
Earth`s Population Growth

... people the amount of fresh water available to each person decreases decreases. Only 0.3% of the water on the planet is available for human use. Due to mismanagement, over 40% of the groundwater in the U.S. is contaminated by industrial, agricultural, and household pollution, making it extremely diff ...
Wk 8
Wk 8

... Productivity Controls • Understanding the patterns of and controls on distribution of organisms in aquatic habitats is essential to the study of ecology, particularly in the fields of conservation biology and fisheries management. • Species over-exploitation, habitat destruction, and introduction of ...
FACTORS AFFECTING POPULATION CHANGE Density
FACTORS AFFECTING POPULATION CHANGE Density

... If the prey population decreases the predator population will also decrease, as the amount of food has been reduced. When the predator’s population decreases the amount of prey will increase as there is less predators around to consume them. Disease can greatly affect the populations that are dense ...
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biology - People Server at UNCW

... Economic development and population Read about country stages pp. 188-189: Pre-industrial, Transitional, Industrial, and Post industrial Factors for population change used today Family planning Empowering women Economic rewards and penalties READ about China and India examples Age Structure diagrams ...
The Search for a Mechanism of Coexistence in Ecological Literature
The Search for a Mechanism of Coexistence in Ecological Literature

... may be relatively small for insect herbivores like the leaf-miners that are frequently specialists in a highly diverse and heterogeneous landscape. Competition kernels are a measure of the strength of competition experienced by an individual due to the number of neighbors it has, and how close these ...
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В 2. Community Processes: Species Interactions and Succession в

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Ecosystem Dynamics

... 1.Competition: occurs when organisms of the same or different species try to use the same resource at the same time and place 2.Resource: any necessity for life a.EX: water, nutrients, light, food, or living space ...
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Chapter 14

... •Competition and predation are two important ways in which organisms interact. Community interactions, such as competition, predation, and various forms of symbiosis, can powerfully affect an ecosystem. •Resource refers to any necessity of life, such as water, food, etc… •Competition occurs when two ...
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Community Structure

... food web. A community dominated by endotherms, like mammals, would necessarily be short (usually 3-4 links in a ‘chain’); endotherms are very inefficient metabolically, converting only about 10% of the energy they consume into biomass. This is CRITICAL, because it is ONLY the energy converted into b ...
Ch. 38
Ch. 38

...  this occurs in both prey and predators • prey might use this form of mimicry to startle a predator or to provide a false target for attack • predators might use this mimicry to simulate bait to ...
Limiting Factors
Limiting Factors

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Cycles - MrsGorukhomework

... environmental conditions. The gradual change in species composition of a given area over time is called ecological succession. During succession, colonizing or pioneer species arrive first. As the environmental (abiotic) conditions change, they are replaced by other species and then later by others. ...
Each of the following is an abiotic factor in the environment EXCEPT
Each of the following is an abiotic factor in the environment EXCEPT

... together and neither is harmed 3. One organism lives in or on another and benefits. 4. Two organisms nourish each other; both benefit. ...
Ecosystems
Ecosystems

... the size, composition, and dynamics of populations. Population - a group of interacting individuals of the same species. Community - a group of interacting populations. Ecosystem - a functional environmental unit, consisting of a biotic community and the abiotic (nonliving) factors on which the orga ...
1. All living things need water to survive. 2. All living things grow
1. All living things need water to survive. 2. All living things grow

... Bats feed on the nectar from the cactus’s flowers. Each organism has unique characteristics. These characteristics help the organism survive in this environment. ...
BIOLOGY 154: ECOLOGY and ENVIRONMENTAL ISSUES
BIOLOGY 154: ECOLOGY and ENVIRONMENTAL ISSUES

... by other species / communities over time = the ‘life history’ of a community ...
Competitive exclusion and coexistence
Competitive exclusion and coexistence

... fit and can thus leave behind the greatest possible number of offspring. Several competing species might thus emerge separately and alone, effectively treating their common environment as a timeshare. Species are then competing against themselves more than they are against other species, or when int ...
PLTL Workshop on Population ecology
PLTL Workshop on Population ecology

... Type II - Likelihood of death is approximately the same in all age classes, and curve is linear from birth to maximum age (e.g., many small "prey type" animals) Type III: - Very high juvenile mortality, but stable survival rate once the critical juvenile period has passed. (e.g., animals with free- ...
Section 1 re-write for 2001
Section 1 re-write for 2001

... Taxonomy is the science of the classification of living things. The Swedish naturalist Carolus Linnaeus (1707 - 1778) introduced a system of naming organisms which helped humans to organise into groups all the knowledge that had been gathered. Linnaeus introduced the binomial system for naming organ ...
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Storage effect

The storage effect is a coexistence mechanism proposed in the ecological theory of species coexistence, which tries to explain how such a wide variety of similar species are able to coexist within the same ecological community or guild. The storage effect was originally proposed in the 1980s to explain coexistence in diverse communities of coral reef fish, however it has since been generalized to cover a variety of ecological communities. The theory proposes one way for multiple species to coexist: in a changing environment, no species can be the best under all conditions. Instead, each species must have a unique response to varying environmental conditions, and a way of buffering against the effects of bad years. The storage effect gets its name because each population ""stores"" the gains in good years or microhabitats (patches) to help it survive population losses in bad years or patches. One strength of this theory is that, unlike most coexistence mechanisms, the storage effect can be measured and quantified, with units of per-capita growth rate (offspring per adult per generation).The storage effect can be caused by both temporal and spatial variation. The temporal storage effect (often referred to as simply ""the storage effect"") occurs when species benefit from changes in year-to-year environmental patterns, while the spatial storage effect occurs when species benefit from variation in microhabitats across a landscape.
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