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31 Cards in this Set
- Front
- Back
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What are the characteristics of Wetlands?
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Can be marine or freshwater
Shallow=lots of photosynthesis |
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What affects the amount of photosynthesis in streams and rivers?
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Size
Mud (dirty, cloudy) Plant covering |
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What makes estuaries so harsh to live in?
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Combination of ocean and river. Fresh water and salt water. Difficult for osmosis.
Bull shark. |
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Why are intertidal areas to hard to live in?
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Partially wet, partially dry.
Must be highly adapted. |
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Why are oceanic pelagic biomes so unproductive?
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Huge, so it's less productive per square meter. All the nutrients sink down to the bottom, abyssal zone.
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What is unique about a marine bethic zone?
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Food chain depends on sulfur instead of carbon due to hydrathermal vents. Home to scavenger life and bioluminescence.
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What determins the distribution and structure of terrestrial biomes?
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Climate-Temperature and precipitation.
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What are the defining characteristics of a Savanna?
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Cross between grassland and forest.
6 months=really wet 6 months=really dry Must be highly adapted. |
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What are the defining characteristics of a chaparral?
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Smallest biome.
Rainfall is in winter=most productive time for plants. Endangered |
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What are the defining characteristics of a temperate grassland?
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Warm but too dry for a forest. Very productive.
Good for agriculture=endangered. |
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What two biomes are endangered and why?
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Chaparral=weather is constant so people flock there.
Temperate grassland=good for agriculture. |
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What are the defining characteristics of a tropical forest?
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Wet
Warm=temperature constant |
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What are the defining characteristics of a desert?
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(Usually) warm and dry.
Despite this, some are extremely diverse. |
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What are the defining characteristics of a coniferous (boreal) forest?
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Near poles.
Has permafrost (never thaws) Dominated by evergreens (shed snow, photo at all times) |
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What are the defining characteristics of a temperate broadleaf forest?
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Next to grasslands.
Warm and wet enough for forests. KC! :) |
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What are the defining characteristics of a tundra?
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Near poles
Dry and cold Frozen desert Extremely productive when not frozen |
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Explain the relationship between ecological and evolutionary time.
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Ecological time-1 year to a decade.
Events that occur in ecological time affect life on the scale of evolutionary time. Ex. Prey dies due to predator is in ecological time Prey that survives and adapts becomes the predator in evolutionary time |
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Biological hierarchy
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Ecosystem
Community Population Organism Tissue Cell Molecule Atom |
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Theory of Continental Drift
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Plates sit on a lake of magma, drift slowly. Explains why some species are exact same on different continents. Australia isolated, explains marsupials.
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Describe species transplants and its effects.
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Organisms that are intentionally or accidently relocated from original distribution. Can disrupt ecosystems. Ex. Kudzu
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What are the biotic factors that affect the distribution of organisms?
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Interactions w/ other species
Predation Competition Disease |
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What are the abiotic factors that affect distribution?
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Temperature
Water (form of precipitation) Sunlight Wind Rocks and Soil (May not directly affect the organism, but what affects the plants affects the organisms indirectly) |
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Thermal Neutral Zone
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Temperatures between the min and max that the organism can survive in without spending too much energy. Affects biological processes
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How does sunlight affect ecosystems?
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Affects photosynthesis. Light must be of good quality. Also affects animal breeding. Longer days=time to breed
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How does wind affect ecosystems?
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Amplifies effects of temperature. Increases heat loss due to evaporation and convection. Can change plant morphology.
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How do rocks and soil affect ecosystems?
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Soil limits distribution of platns due to physical structure, pH, and mineral composition.
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What abiotic components make up climate?
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Temperature
Water Sunlight Wind |
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What is the effect of the sun on ecosystems?
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Solar energy determiens global climate patterns.
Intensity is due to angle of rays, heats air to cause air circulation and wind patterns (in turn causes currents) |
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What is the affect of bodies of water on ecosystems?
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Oceans and currents, large lakes moderate nearby terrestrial climates
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What is the affect of mountains on ecosystems?
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Amount of sunlight
Local Temperature Rainfall |
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Explain seasonal turnover
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Stratification-water at the top and bottom of lake are different densities. Thin band in between-thermal point.
Dead matter, nutrients, everything at bottom of lake=water can be anoxic. When seasons change and water turns, the anoxic water kills the fish. Also leads to limnic eruptions-super concentrated carbon dioxide. Everything w/n 20-30 mi suffocates instantly. |
