two researchers measure trees for a reforestation and resource management purposes - 生態學家 個照片及圖片檔森林, 日本, 日本人
environmental quality assurance of water. surveyor examining water and reading water samples (ph value) based on a water sampling standard in a test tube near a river. - 生態學家 個照片及圖片檔畫像, 環保人士, 科學家
female forest researcher analyzing soil samples with laptop in dense woodland - 生態學家 個照片及圖片檔科學家, 雨林, 技術
biologists are paddling kayaks exploring plants and water sources to collect data for research and development of wetlands, conservation concepts, saving the planet, nature and the environment. - 生態學家 個照片及圖片檔檢查, 皮船, 探索者
polluted forest. group of volunteers collecting rubbish in the forest, plastic containers, bottles in their bag - 生態學家 個照片及圖片檔廢物管理, 森林
polluted forest. volunteer collecting rubbish in the forest, plastic containers, bottles in their bag - 生態學家 個照片及圖片檔土耳其, 森林
ecologist on fieldwork. forester examines trees in their natural condition in the forest and taking samples for in-depth research. ecosystem care and sustainability. - 生態學家 個照片及圖片檔森林, 電腦, 工作
portraits of biologists or botanists are conducting field surveys by walking in wetlands to collect information on plant and animal species to use as research data. - 生態學家 個照片及圖片檔科學家, 森林, 雙人
The Paris city hall on 1 June, 2017 is lightened in green « to mark the disapprobation » of the french capital and its socialist mayor Anne Hidalgo...
