Ecology:Concepts and ApplicationsNatural History---Life in Water2003.10.22
2003.10.22 1 Ecology:Concepts and Applications Natural History-Life in Water
Ecology:Concepts andApplicationsNaturalhistonFIGURE3.1Earthfromspace
2003.10.22 2 Ecology:Concepts and Applications Natural history
Ecology:Concepts andApplicationsNaturalhistonyThe hydrologic cycleexchanges water among reservoirs2003.10.22
2003.10.22 3 Ecology:Concepts and Applications Natural history The hydrologic cycle exchanges water among reservoirs
Ecology:ConceptsandApplicationsNatural histonyThe atmosphere contains a relativelysnalt amountof waterthatis rapidlyAtmosphererenewedthnsugh.the opposingprocesses13.000kmofevaporaion and precipitation.425.000.km/yrevaporates40.000km/yr.cvaporatedA veny large quantity of wateris tiedfrom the ocean's surfacefromtheocean+71.000pp in tceMelting would raise thekm/yrevaporatedfromoceans enongh to nood coastal cities.385.000km2/yrorganisms and land surfaces(111.000km/yr)returns totheoceanprecipitates onto landas precipitationTor7500.00mkmyRiverflow carriesOceans form the largestreservoir40.000km/yrtofor the global hydrologie cycle.the oceans.Groundwater8.200,000kmOceans1.350.000.000kmGroundwater is being rapidly depletedin manyareis by pamping from wells.A renewal time of the oceans is 3,100 years.TGURE3.2Thehydrologiceycle
2003.10.22 4 Ecology:Concepts and Applications Natural history A renewal time of the oceans is 3,100 years
Ecology:Concepts and ApplicationsNaturalhistonCASEHISTORIES:The biology of aquatic environmentscorresponds broadly to variationsinphysical factors such as light, temperature,and water movements and to chemicalfactors such as salinityand oxygenFIGURE3.3Aviewoftheopenocean
2003.10.22 5 Ecology:Concepts and Applications Natural history CASE HISTORIES: The biology of aquatic environments corresponds broadly to variations in physical factors such as light, temperature, and water movements and to chemical factors such as salinity and oxygen