WATER CYCLE REVIEW

▸ Evaporation

▸ Evapotranspiration/transpiration

▸ Condensation

▸ Precipitation

▸ Percolation

▸ Runoff

▸ Groundwater

p. 1228

CARBON CYCLE- MAIN PROCESSES

▸ PHOTOSYNTHESIS

▸ CELLULAR RESPIRATION

▸ DECOMPOSITION

▸ COMBUSTION

p. 1228

CARBON STORAGE

▸ Ocean is a carbon “sink”

▸ CO2 fixed into carbonic acid; allows ocean to absorb more

▸ Stored in limestone sediments in the deep ocean

▸ About 1/2 of the Earth’s amount is there

CARBON CYCLE- GLOBAL WARMING

▸ PO43- = phosphate ion; DNA backbone

▸ A limiting nutrient in most aquatic ecosystems- why?

THE PHOSPHORUS CYCLE

PHOSPHORUS CYCLE- MAIN PROCESSES▸ Weathering

▸ Uptake by plants and consumption

▸ Decomposition

▸ Leeching

▸ Collection in aquatic environments

▸ Geological uplift

p. 1229

CARBON AND WATER CYCLE REVIEW

TEXT

▸ 78% of atmosphere is N2

▸ Nitrogen used in production of proteins and DNA/RNA

NITROGEN CYCLE- MAIN PROCESSES▸ Nitrogen fixation

▸ Ammonification

▸ Nitrification

▸ Assimilation

▸ Denitrification

NITROGEN AND PHOSPHORUS CYCLE REVIEW

▸ https://www.youtube.com/watch?v=leHy-Y_8nRs&t=2s

SUCCESSION

▸ Sequential changes in an environment over time

▸ Ultimate goal: stability

▸ Connection to biodiversity?

▸ Pioneer species

PRIMARY SUCCESSION

▸ No life before; not previously colonized

▸ Begins from rock and glacial movement; volcanic formations. No soil present!

▸ Long-term

▸ Pioneer species?

PRIMARY SUCCESSION

PRIMARY SUCCESSION

SECONDARY SUCCESSION

▸ Area previously colonized

▸ Caused by a disturbance

▸ Short-term

▸ Pioneer species?

SECONDARY SUCCESSION

SECONDARY SUCCESSION