2.3, 2.4: Ecosystems and Ecology
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22 Terms
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Net primary productivity
________: total gain in energy or biomass by green plants after allowing for losses to respiration.
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Zonation
________: change in community and ecosystem aking and environmental gradient due to changes in altitude, latitude, tidal level or distance from shore /coverage by water.
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Biome
________: is a collection of ecosystems sharing similar climatic conditions.
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Productivity
________: conversion of energy into biomass over a given period of time.
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Gross
________ primary productivity: total gain in energy or biomass by green plants.
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Biogeochemical cycles
________: the natural pathways by which essential elements of living matter are circulated.
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Biosphere
________: part of the earth inhabited by organisms.
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sub climax community
A(n) ________ is one which will only continue its development if the limiting factor is removed.
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Net
________: amount left after deductions are made; what you have left, always lower than the gross amount.
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Latitude
________: distance north or south from the equator.
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Energy budget
________: can measure the quantities of energy entering and leaving the animal or population.
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→ nitrification
________: nitrifying bacteria in the soil which are able to convert ammonium to nitrates.
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Primary succession
________: process of creating life in an area where no life previously existed.
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Net productivity
________: gain in energy or biomass that remains after deductions due to respiration.
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Gross
________: total amount of something made as a result of an activity.
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Productivity
conversion of energy into biomass over a given period of time
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Gross
total amount of something made as a result of an activity
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Net
amount left after deductions are made; what you have left, always lower than the gross amount
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Biosphere
part of the earth inhabited by organisms
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Zonation
change in community and ecosystem aking and environmental gradient due to changes in altitude, latitude, tidal level or distance from shore/coverage by water
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Primary succession
process of creating life in an area where no life previously existed
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Secondary succession
when an established community is suddenly destroyed, an abridged version of succession starts