1817-1862 1952- 1954- 1967- 19thcentury 2005 20thcentury 941 aerialphotographs agriculturalecology agriculturalproductivity agriculture alaska american ancient anthropology antiquities archaeology archaeologyandhistory architecture arizona artistic atmosphericcarbondioxide australasia australia authors bibliography biogeochemistry biogeography biography biologicalstations bioticcommunities bolivia byron california carboncycle(biogeochemistry) carbondioxide casestudies cheboygancounty china chiquitos(province) citiesandtowns cityandtownlife cityplanning civilization climaticchanges coastalarchaeology coastchanges congresses davidr deforestation descriptionandtravel earthsciences ecology economicaspects economicconditions economicgeography ecosystems effectofhumanbeingson england environmentalarchaeology environmentalaspects environmentalconditions environmentaldegradation environmentalgeomorphology environmentaljustice environmentalpolicy essex excavations(archaeology) florida forestecology fortification freshwaterbiology frontierandpioneerlife general geodynamics geographicalperception geography geologicaltime geology geomorphology glacialepoch grandcanyon greatbritain growth gulfcoast géographiehumaine habitats hadrian'swall(england) henrydavid historicalgeography historicalgeology historicpreservation history homesandhauntsthoreau homme humanecology humangeography huntingandgatheringsocieties hurricanekatrina influencesurlanature ireland journeysfoster khumbuvalley klett landesquecapital landscape landscapearchaeology landscapeassessment landscapeecology landscapephotography landscapeprotection landscapes landsettlement landuse lifesciences louisiana mark mediterraneanregion methodology mexico michigan military modifications mountainecology naturalhistory nature neoliberalism nepal newengland neworleans northamerica northern northsearegion oceans oraltradition palaeontology paleoclimatology paleoecology paleontology paysage peasants photography physicalgeology politicalaspects post-communism prehistoricanthropology prehistoricpeoples publicopinion publicspaces quaternary regionalism repeatphotography riverchannels rivers roman romania romaninfluences romans romneymarsh romneymarsh(marsh) ruralconditions ruraldevelopment science scientificapplications sealevel seas serengetinationalpark sherpa(nepalesepeople) soc003000nat025000 socialaspects socialchange socialconditions socialenvironment socialscience sociology soilerosion sonora(state) southern spaceineconomics tanzania to1500 tr786 unitedstates urbanization villages water waterandarchitecture wateruse wetlandconservation wildernessareas wiltshire wolfe écologiehumaine évaluation