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Related Flashcards
Cards In This Set
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What is a cycle that is impacted by fertilizers? What is the impact?
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The Nitrogen Cycle; Bacteria would excrete the fertilizers and would be run off, or the fertilizer itself, which would impact the fish because they would get it more concentrated higher up the food chain, similar to the mercury in fish.
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The work of scientists begins with?
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Testing a hypothesis
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A controlled experiment allows the scientist to isolate and test?
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A single variable
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What is not a limiting factor?
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Disease
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What is a density-dependent limiting factor?
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Predation
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What is a density-independent limiting factor?
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Earthquake
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Ecosystem (aka ecological system)
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Def: a community and all the
physical aspects of its habitat p338
Ex: soil, water, and weatherApp:
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Niche
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Def: what area in which an organism lives (habitat)Ex: App: Fundamental Niche- total niche an organism can potentially live Realized Niche- the part of its niche that the species actually occupiesRole in Ecosystems- With biotic and a-
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Def: Ex:App:
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Symbiosis: Commensalism +0, Mutualism++, Parasitism+-
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Def: 2 species that live closely together in a way that either doesn't effect, harms or benefits the other Ex:App:
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Biomagnification
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Def: increasing amounts of a toxic substance in high trophic levelsEx: mercury in fishApp:
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Carrying capacity
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Def: level at which population growth is about zero App:
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Exponential growth
logistic growth |
Def: when the population size is plotted against time and shows through a J shaped curve the rapid growth of a population Def: when there is a diminishing/finite resource levels which limit population growth
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Water Cycle
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 App: Rain shadow effect- shadow of mountain prevents precipitation within the shadowHEI- reduce transpiration and increase runoff (soil lose nutrients) |
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Biogeochemical cycles
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Def: Bio- living,Geo- Earth, Chemical- elements, compounds, Cycle- circles,
goes through all
Ex:App:
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