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ecology - Westlake FFA
ecology - Westlake FFA

... resources of an area can support • The carrying capacity of the environment is limited by the available abiotic and biotic resources, as well as the ability of ecosystems to recycle the residue of dead organisms through the activities of bacteria and fungi. ...
Habitat - Piscataway High School
Habitat - Piscataway High School

... Doesn’t enter atmosphere like C, O, N Stays in rock & soil minerals & ocean sediments Plants pull inorganic phosphate from soil and water, and cycle it through the food web. ...
Ecosystems
Ecosystems

... How does the predator-prey relationship help maintain balance & stability in an ecosystem? • Predators eat prey and maintain health of the prey populations • Predators eat the old, sick, weak – those “less fit” to survive the help the evolution of the species • Works like a cycle: As the population ...
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... consumer (primary, secondary, tertiary) decomposer herbivore omnivore ...
Ecology
Ecology

... • Heterotrophs (consumers) are organisms that rely on other organisms for their energy and food supply. • Energy is produced in the mitochondria of the cell via “cellular respiration.” • You must know the chemical formula for cellular respiration: ...
Ecological Communities
Ecological Communities

... • Presence of one species may have a direct affect on the presence or absence of another!! – Often certain animal species are only associated with certain vegetation – which in turn is only associated with certain biomes or geographical locations! ...
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Polar Ecosystems: The Arctic

BI101 Winter 2016 Morré STUDY GUIDE FOR FINAL EXAM FINAL
BI101 Winter 2016 Morré STUDY GUIDE FOR FINAL EXAM FINAL

... How do agricultural practices affect sustainability? Name three sustainable agricultural practices that can help reduce damage to nearby aquatic systems and air quality. What can individuals do to conserve energy, materials, support sustainable practices? Briefly discuss what has happened to native ...
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... • Stability components – Resistance – Resilience – Recovery speed ...
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Ch 3 “Energy Flow In Ecosystems”

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...  Has habitat for animals begun to develop? (invertebrates, fish, birds, mammals)  If soils were poor or lacking, has new soil structure begun to form?  Were artificial habitat structures or features (boxes, cover, water, etc.) created? Do they function? The restored ecosystem is suitably integrat ...
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Species Interactions Review: Look at the food chain above. What do

... oxygen below. What is the name of the process that is represented by the arrow going from the biosphere (picture of rabbit, plants and decomposers) to the carbon dioxide in the atmosphere? 5. What is the name of the process that is represented by the arrow that goes from the carbon dioxide in the at ...
Note 14 - South Tuen Mun Government Secondary School
Note 14 - South Tuen Mun Government Secondary School

... Competition – living organisms compete for resources, two types : interspecific competiton i.e. between different species and intraspecific competition i.e. within the same species; intraspecific competition is more severe than interspecific competition. Symbiosis – the living together of two specie ...
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1. The table below gives the percentage of world energy supplied

... Explain why the rate of increase in the amount of carbon in the atmosphere should be controlled. ...
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What is an ecosystem?

... What led to the dramatic loss of birds on Guam? Sometime in the mid to late 1940s, brown tree snakes were introduced to the island probably by hitching a ride on a cargo ship after World War II. Because there aren’t many large predators on Guam, the snakes quickly took over the island. By the 1980s ...
Energy Flow In Ecosystems - Floyd County School District
Energy Flow In Ecosystems - Floyd County School District

... Although each organisms role is different, all parts of the ecosystem are necessary for the ecosystem to work! ...
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... first trophic level. Plants are also called autotrophs because they produce their own food/glucose Organism that consume plants are called primary consumers and are also called herbivores (eat plants) – second trophic level. Any organism that must eat another organism is called a heterotroph (other ...
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... several different niches. The role of a species includes where it lives, how it obtains its food, and how it affects its environment. Ex: a “job” or its role in the community, dragonflies catch mosquitoes while mosquitoes feed on blood. Level of Organization: Individual (one caribou), Population (tw ...
ecology - Algonac Community Schools
ecology - Algonac Community Schools

... 13. Most organisms are involved not in just food chains, but in FOOD WEBS: complex interactions of organisms through which energy is passed. ...
ECOSYSTEMS AND BIODIVERSITY
ECOSYSTEMS AND BIODIVERSITY

...  Photosynthesis -- Chemical reaction where green plants use water & carbon dioxide to store the sun’s energy in glucose.  ENERGY is stored in glucose.  Glucose is stored as starch in plants  The majority of autotrophs are photoautotrophs that harness the energy of the sun and pass some of this e ...
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Ecology Food Chains/Webs

Ecology - Madison County Schools
Ecology - Madison County Schools

... A. Organism—3 Things that affect organisms: 1. habitat—where it lives 2. niche—its way of life 3. trophic level—its feeding level in the food chain ...
ecology
ecology

... Ecosystem – This is a unit studied in Ecology A. Ecosystems involve the interaction of biotic (living) and abiotic (non-living) factors. It is self-sustaining if the following factors are met: 1. Constant source of energy (sun) 2. Ability to convert energy to food (organic compounds) 3. Cycling of m ...
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Ecosystem



An ecosystem is a community of living organisms in conjunction with the nonliving components of their environment (things like air, water and mineral soil), interacting as a system. These biotic and abiotic components are regarded as linked together through nutrient cycles and energy flows. As ecosystems are defined by the network of interactions among organisms, and between organisms and their environment, they can be of any size but usually encompass specific, limited spaces (although some scientists say that the entire planet is an ecosystem).Energy, water, nitrogen and soil minerals are other essential abiotic components of an ecosystem. The energy that flows through ecosystems is obtained primarily from the sun. It generally enters the system through photosynthesis, a process that also captures carbon from the atmosphere. By feeding on plants and on one another, animals play an important role in the movement of matter and energy through the system. They also influence the quantity of plant and microbial biomass present. By breaking down dead organic matter, decomposers release carbon back to the atmosphere and facilitate nutrient cycling by converting nutrients stored in dead biomass back to a form that can be readily used by plants and other microbes.Ecosystems are controlled both by external and internal factors. External factors such as climate, the parent material which forms the soil and topography, control the overall structure of an ecosystem and the way things work within it, but are not themselves influenced by the ecosystem. Other external factors include time and potential biota. Ecosystems are dynamic entities—invariably, they are subject to periodic disturbances and are in the process of recovering from some past disturbance. Ecosystems in similar environments that are located in different parts of the world can have very different characteristics simply because they contain different species. The introduction of non-native species can cause substantial shifts in ecosystem function. Internal factors not only control ecosystem processes but are also controlled by them and are often subject to feedback loops. While the resource inputs are generally controlled by external processes like climate and parent material, the availability of these resources within the ecosystem is controlled by internal factors like decomposition, root competition or shading. Other internal factors include disturbance, succession and the types of species present. Although humans exist and operate within ecosystems, their cumulative effects are large enough to influence external factors like climate.Biodiversity affects ecosystem function, as do the processes of disturbance and succession. Ecosystems provide a variety of goods and services upon which people depend; the principles of ecosystem management suggest that rather than managing individual species, natural resources should be managed at the level of the ecosystem itself. Classifying ecosystems into ecologically homogeneous units is an important step towards effective ecosystem management, but there is no single, agreed-upon way to do this.
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