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Last Exam in Bio
Ecology work
23
Biology
Undergraduate 1
11/22/2011

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Cards

Term
Wetlands/Forests
Definition
- soil formation (nutrients and recycling)
- erosion control
- carbon fixation
Term
Forest Fragments
Definition
- reduced area
- reduced opportunities for gene flow
Term
Ecology
Definition
scientific study of the relationship between organisms and their environments
Term
Ecological systems: Hierarchy of size and complexity
Definition
-individual
-populations
-communities
-ecosystems: combines biotic and abiotic factors
-biosphere
Term
variation in solar radiation with latitude
Definition
global patterns in temperature and rainfall: air circulation and percipitation near the equator
Term
Rotation of the earth & wind patterns
Definition
affects global wind patterns, prevailing winds contribute to production of surface ocean currents
Term
biome
Definition
landscape types of vegetation represent biotic formations or climaxes
Term
Biome types
Definition
- Desert
- Tropical Rainforest
- Grassland
- Temperature Deciduous Forest
- Tundra
- Taiga/Boreal Forest
Term
Terrestrial ecosystems characteristics
Definition
2 biotic factors:
- percipitation
- temperature
Term
Desert Characteristics
Definition
- 20% of earth's surface
- less than 50 cm rainfall per year
Term
Cold Deserts
Definition
- vegetation is primarily desert shrubs
Term
Hot Deserts
Definition
- lacks vegetation
- vegetation being a combination of futile plants
Term
Temperature and Regulation by desert plants
Definition
- open growth form: allows them to lose heat as wind moves through them more
- dense hair coating: increases heat loss, white hair reflects more light
Term
Convergent Strategies for water storage in Camels and Cactii
Definition
-cactii store water in trunks and arms
- dont sweat, allowing internal heat to arise
- dense hair reduces heat gain
- keep stomates closed during the day, only opening them up at night- allowing heat to build up internally
- spines reflect heat
- fat is stored in humps for camels, as a source for metabolic water
- animals concentrate urine
- Both drink/absorb massive amounts of water
Term
Forest Characteristics : Tropical Rainforest
Definition
-20 - 25 degrees celcius
-greater than 200 cm a year of percipitation
- poor nutrient soil, as it is acidic, and rapidly decomposes
Term
Canopy for Tropical Rainforest
Definition
multilayered and continuous, low light , and flora and fauna are very diverse
Term
Plant Adaptations for tropical rainforests
Definition
- salt glands
- smooth bark, buttressing
- climbing vines, epiphytes
- drip tips
Term
Forest Characteristics: Temperate forests
Definition
- 20 to 30 derees celcius
- 75-150 cm even percipitation throughout the year
- fertile soil with decaying litter
Term
canopy for Temperate Forest
Definition
light penetrates, diverse understory vegetation canopy, 3 to 4 tree species with broad leaves
Term
Plant adaptations in Temperate Forest
Definition
-reproductive cycles vary
- thick bark
-deciduous
Term
Boreal Forest/Taiga characteristics
Definition
- temps low in winter
- 40 to 100 cm annual percipitation of snow
- soil is thin, nutrient poor and acidic
Term
canopy for Taiga
Definition
low light canopy, limited understory, flora consists of mostly evergreen conifers
Term
plant adaptations in Taiga
Definition
- leaf shape
- leaf type (evergreen)
- tree shape
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