Test 1 Study Guide

Test 1 Study Guide - Introduction Aldo Leopold- coined the...

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Introduction Aldo Leopold- coined the term conservation which means sustainability (to use a resource no faster than it can sustain itself) Conservation- Conservation focuses on ecosystem protection and utilizes resources in a sustainable way and poses one question: maintaining the health of the natural world : its forests , fisheries , habitats , and biological diversity . Secondary focus is on materials conservation and energy conservation , which are seen as important to protect the natural world. land ethic- a respect for nature; way of looking at nature and to appreciate it through processes of evolution, adaptation, and complexity of natural systems a perspective on environmental ethics first championed by Aldo Leopold in his book A Sand County Almanac . Leopold argues that the next step in the evolution of ethics is the expansion of ethics to include nonhuman members of the biotic community , collectively referred to as "the land." Biosphere- where all life exists. From 10K meters into the atmosphere to 10K meters below the ocean’s surface. The biosphere is the outermost part of the planet 's shell — including air , land , surface rocks and water — within which life occurs, and which biotic processes in turn alter or transform. From the broadest geophysiological point of view, the biosphere is the global ecological system integrating all living beings and their relationships, including their interaction with the elements of the lithosphere (rocks), hydrosphere (water), and atmosphere (air). Habitat- Habitat (which is Latin for "it inhabits") is the place where a particular species lives and grows. It is essentially the environment —at least the physical environment —that surrounds (influences and is utilized by) a species population . We use "species population" instead of "organism" here because, while it is possible to describe the habitat of a single black bear, we generally mean not any particular or individual bear, but the grouping of bears that comprise a breeding population and occupy a certain geographical area. primary production- the production of organic compounds from atmospheric or aquatic carbon dioxide , principally through the process of photosynthesis , with chemosynthesis being much less important. All life on earth is directly or indirectly reliant on primary production. The organisms responsible for primary production are known as primary producers or autotrophs , and form the base of the food chain . In terrestrial ecosystems , these organisms are mainly plants , while in aquatic ecosystems algae are primarily responsible. Net Primary Production= Production- Respiration; Net PP= kcal/m2 year, World PP (billion kcal/ year) photosynthesis by autotrophic organisms- (photo=light, synthesis=putting together) , generally, is the synthesis of sugar from light , carbon dioxide and water , with oxygen as a waste product.
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ecosystem primary production - TRFs, estuaries, high productivity per unit area - Ocean, low productivity per unit area, huge area
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This note was uploaded on 04/15/2008 for the course RNR 1001 taught by Professor W.kelso during the Spring '08 term at LSU.

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Test 1 Study Guide - Introduction Aldo Leopold- coined the...

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