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Environmental Biology by Mind Map: Environmental Biology
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Environmental Biology

Pollution

negative effect of harmful substances in the environment

water

concentration of pollutant increases along the food chain

susceptible species

favoured species

Energy fixation and flow

photosynthesis

respiration

productivity

Energy flow

Circulation of nutrients

soil

detritivores and decomposers

Decomposition

cycles

Biotic Interactions

Biotic

Abiotic

Density

interactions

Predator/ prey

competition

niche

Symbiotic interactions

interaction between any species living together

parasitism

commensalism

Mutalism

interactions -costs, benefits

positive

negative

neutral

the nature of an interaction may change

managing environmental factors

organisms have evolved to cope with environmental changes

Succession

series of changes in types of species which occupy an area in a given time

at each stage of succsession the current species creates the environmental conditions suitable for its competitors

system moves from

example

autogenic

allogenic

primary

secondary

pioneer species (first to colonise area)

Climax community

Degradative

Effects of intensive food production

increase in population has led to increased food production

traditional farming cannot meet demands

monoculture

Increase in energy needs

increase in human population has led to increase in energy demand

finite fossil fuel supplies are running out

increase in fuel use has led to global warming