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45 Cards in this Set
- Front
- Back
Detritus
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a major source of food for the benthos (dead organic matter)
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Biogeography
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The study of the past and present distribution of individual species
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Tropics
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those regions that lie between 23.5 N Lat. and 23.5 S. Lat. (more biodiversity)
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Canopy
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The uppermost layer of vegetation in a terrestrial biome
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Turnover
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oxegenated water from the surface of lakes to teh bottom and nutrient rich water from the bottom to the surface
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Littoral zone
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The shallow, well lit waters close to shore
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Wetland
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an area covered with water that supports aquatic plants
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Landscape ecology
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array of ecosystems adn how they are arranged in a geographic region
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Benthic zone
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The bottom of all aquatic biomes
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Ecological time
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Minutes, months, years
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Permafrost
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a permanently frozen stratum
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Landscape/Seascape
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Several different ecosystems linked by exchanges of energy, materials, and organisms
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Neritic zone
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the shallow regions over teh continental shelves
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Dispersal
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the distribution of individuals within geographic population boundaries
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Oceanic pelagic zone
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the ocean water lying far from shore constnatly mixed by ocean currents
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Evolutionary time
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decades, centuries, millenia and longer
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Community ecology
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The whole array of interacting species in a community
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Community
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all the species that inhabit a specific area
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Oceanic zone
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past continental plates reaching very great depths
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Limnetic zone
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the well lit open surface waters farther from shore
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Ecology
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the scientific study of the interactions between organisms and their environments
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Intertidal zone
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The zone where land meets water
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Deep-sea hydrothermal vents
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undersea volcanoes
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Abiotic components
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Nonliving chemical and physical factors
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Biotic components
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All teh organisms that are part of any individual environment
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Mesotrophic lakes
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lakes between the extremes of oligotrophic and eutrophic; they have a moderate amount of nutrients and phytoplankton productivity
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Ecosystem ecology
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Energy flow and the cycling of chemicals among the various biotic and abiotic components
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Aphotic zone
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The part of the ocean beneath the photic zone, where light does not penetrate sufficiently for photosynthesis to occur
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Microclimate
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climate varying on a very small scale (i.e. under a rock)
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Benthos
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The communities of organisms occupying the benthic zone
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Abyssal zone
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Very deep benthic communities
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Coral reefs
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areas dominated by teh structure of coral itself formed by a diverse gruop of cnidarians that secrete hard external skeletons made of calcium carbonate
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Biosphere
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The global ecosystem--the sum of all the planet's ecosystems
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Oligotrophic lakes
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lakes that are deep and nutrient poor and the phytoplankton in the limnetic zone are relatively sparse and not very productive
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Organismal ecology
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morphological, physiological, and behavioral ways in which individual organisms meet the challenges posed by their biotic and abiotic evironments
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population ecology
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factors that affect how many individuals of a particular species live in the same area
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profundal zone
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the deep apothic region
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Pelagic zone
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open water of any depth
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population
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a group of individuals of the same species livign in a particular geographic area
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precautionary principle
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abstaining from making decisions until all teh answers are known
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Photic zone
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the narrow top slic of the ocean where light permeates sufficiently for photosynthesis to occur
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The Tens Rule
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The statistical prediction that an average of one out of ten introduced species become estabilshed, and one out of ten established species become common enough to become pests
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Eutrophic lakes
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shallow lakes and teh nutrient content of their water is high
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Ecosystem
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All teh abiotic factors in addition to teh entire community of species
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Thermocline
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narrow stratum of rapid temperature change
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