Oligochaetes and eutrophication; an experiment over four years in outdoor mesocosms


Eight experimental ditch mesocosms were used to study the effect of eutrophication over four years. The experimental ditches had a sand or clay bottom. The ditches were treated with additions of phosphorus, phosphorus and nitrogen, or without additions (controls). Oligochaetes were sampled by deploying trays with substratum for colonization over twenty… (More)
DOI: 10.1007/BF00017367


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