Chapter 43 & 44 Flashcards
Environmental factors that affect living organisms
temperature wind availability of water availability of light salinity pH
Biomes
major community types (terrestrial & aquatic)
Terrestrial biomes
tropical rain forest tropical deciduous forest temperate rain forest temperate coniferous forest temperate deciduous forest tropical glassland (savanna) temperate grassland (praire) hot desert cold desert tundra mountain ranges
aquatic biomes
industrial zone coral reef open ocean lakes rivers wetlands
Population
group of interbreeding individuals occupying the same habitat at the same time
Population ecology
studies factors affecting population size & how they change over space and time
Measuring populations growth and density
- tools of demography
- simply visual count
- Capture method
- Mark-recapture method
Exponential growth
resources are not limited, prodigious growth
keep increasing
Logistic Growth
resources are limiting, limits the amount of growth (levels off)
Species Interactions
Competition: -,-
Predation, Herbivory, Parasitism: -,+
Mutualism: ++
Commensalism: +, N
Ecological footprint
aggregate total of productive land needed for survival in a sustainable world
Greenhouse effect
solar radiation passes through the atmosphere & heats the earth surface
-humans increase effect
Capture Method
special sampling methods allow us to generalize number of captures organisms to size of the overall population
Mark-recapture Method
mark animals with tag or other systems so they are recognized when captured again
Competition
Double negative
very common
single pair of species use the same resources
high in plants
