1.3 aquatic biomes

biome

region that shares similar characteristics

on land: temp, precipitation, plant & animal communities

in the water: light availability, depth, temp, currents and tides

DO

dissolved oxygen

the lotic system

for flowing water. can be divided into 3 zones. for freshwater systems.

drainage basin

and area of land that drains runoff sediments and dissolved substances into a stream, river, or wetland

freshwater: streams and rivers

source zone: shallow, cold, clear, fast flowing stream, high DO, low nutrient levels = low NPP

transition zone: wider stream bed, warmer water, slower stream velocity, lower DO, more NPP

floodplain zone: wide stream bed, warmest temp, high turbidity, least DO, highest NPP

lentic systems (standing water)

oligotrophic: deep, steep sided banks, fed by ice and snow melt. low nutrients = low NPP.

eutrophic: shallow, high turbidity, high nutrients = high NPP

freshwater: ponds and lakes