31. However, he played down the ecological impact . 32. Loss of microbial ecosystems caused by the release of the freshwater may also have far-ranging ecological impacts . 33. Global warming could well have serious adverse societal and ecological impacts by the end of this century. 34. But Cabinet members agreed that further feasability, ecological impact and cost assessment studies were needed, Kovacs said. 35. Daniel Pauly has suggested a framework for the ecological impacts fishing down can have on marine ecosystems. 36. The FAO considers the ecological impact of freshwater prawn farming to be less severe than in shrimp farming. 37. Experts say it is too soon to judge how severe the ecological impact in this case might be. 38. There would also be very complex ecological impacts and effects, some of which would be incapable of mitigation. 39. About 10 percent of these, according to earlier research, have had an ecological impact , most of it negative. 40. Any possible ecological impact isn't verifiable.
