Shared Flashcard Set

Details

Ecology Exam 1.2
Ecology
50
Environmental Studies
Undergraduate 2
10/06/2009

Additional Environmental Studies Flashcards

 


 

Cards

Term
Fringing Reef
Definition
Corals growing around young islands.
Term
Barrier Reef
Definition
Corals move upward and outward as island subsides, forming a lagoon. Great Barrier Reef, largest.
Term
Atoll
Definition
Island subsides and coral remains.
Term
Lake Superior
Definition
Largest freshwater body.
Term
Littoral Zone
Definition
Edge of lake.
Term
Limnetic zone
Definition
Surface layer of lake.
Term
Metalimnion
Definition
Below limnetic zone.
Term
Hypolimnion
Definition
Bottom of lake.
Term
Oligotrophic
Definition
Cool temperatures, low availability of nutrients.
Term
Eutrophic
Definition
Warm temperatures, high availability of nutrients.
Term
Mesotrophic
Definition
Between oligotrophic and eutrophic.
Term
Amazon River
Definition
Largest river.
Term
Water Column
Definition
Water from surface to stream floor.
Term
Pool
Definition
Still water in a stream.
Term
Riffle
Definition
Fast moving water in a stream.
Term
Active Channel
Definition
Where stream rises during flooding.
Term
Wetted Channel
Definition
Height of stream without flooding.
Term
CPOM
Definition
Coarse Particulate Organic Matter (leaves)
Term
FPOM
Definition
Fine Particulate Organic Matter (shredded CPOM)
Term
Pentanal
Definition
Largest freshwater wetland (Brazil, Peru, Argentina).
Term
Everglades
Definition
Largest wetland in the United States.
Term
Freshwater Emergent Wetland
Definition
Phosphorous limited. Palustrine and lacustrine.
Term
Marshes
Definition
Herbaceous vegetation.
Term
Swamps
Definition
Woody vegetation.
Term
Bogs
Definition
Acidic water.
Term
Total Biodiversity
Definition
Balance between evolution and extinction.
Term
Mass Extinctions
Definition
Silurian, Carboniferous, Triassic, Jurassic, Tertiary.
Term
Total Species on Earth
Definition
30-50 million.
Term
Milankovich Cycles
Definition
Earth's tilt and orbit effects climate.
Term
Biodiversity Hotspots
Definition
25 major hotspots, ~1.5% Earth's surface/50%.
Term
Allopatric Speciation
Definition
Population becomes fragmented and isolated, splits into two or more species.
Term
Coldspots
Definition
Region with important ecosystem services.
Term
Ground Color and Temperature
Definition
Black sand absorbs heat, white sand reflects.
Term
Homeostasis
Definition
Maintenance of relatively constant physiological conditions.
Term
Regulators
Definition
Warm-blooded/endotherm/homeotherm (mammals and birds). Heat comes from metabolism, maintain internal body temperature (60% effective, 40% body heat).
Term
Conformers
Definition
Cold-blooded/ectotherm/poikilotherm (reptiles, amphibians, fish). Body temperature parallels environmental temp. Metabolism is slow, lose little heat, low insulation (not much heat made).
Term
Heterotherms
Definition
Hummingbirds, tuna.
Term
Torpor
Definition
Low metabolic rate, uses little energy.
Term
Short Term Behavorial Responses
Definition
Conformers - maintain activity level within temp. range. Regulator - maintain constant body temp.
Term
Short Term Physiological Responses
Definition
Regulator - evapotranspiration/heat retention/acclimation.
Term
Long Term Behavorial Responses
Definition
Migration, long-term sleep, short-term sleep, dormancy, delayed development.
Term
Aestivation
Definition
Summer dormancy.
Term
Long Term Structural Responses
Definition
Thickness of hair.
Term
Extremely Long Term Responses
Definition
Irreversible (influence on genes), skin coloration.
Term
Life History Strategy
Definition
Decisions that organisms make that impact reproductive fitness. (Decisions or natural selection effect this).
Term
Reproductive Fitness
Definition
Number of offspring that survive to reproductive age.
Term
Decisions - Direct Influence on Reproductive Success
Definition
Traditional examples - Age of reproduction, number of offsprings produced at once (r-selected, k-selected).
Term
R-Selected Species
Definition
Many small offspring, no parenting.
Term
K-Selected Species
Definition
Few large offspring, much parenting.
Term
Decisions - Indirect Influences on Reproductive Success
Definition
Inclusive examples - Foraging decisions, mate choice decisions.
Supporting users have an ad free experience!