Institute of Ecology, Limnology, University of Lund, Box 65, S-221 00, Lund, Sweden.
Microb Ecol. 1988 Nov;16(3):311-22. doi: 10.1007/BF02011702.
Bacterioplankton from 10 oligotrophic lakes, representing a gradient from clearwater to polyhumic, were grown in dilution cultures of sterile filtered lake water. The bacterial biomass achieved in the stationary phase of the dilution cultures was positively correlated with the amount of both humic matter and dissolved organic carbon (DOC) in the lakes. About the same fraction of the total DOC pool was consumed in the dilution cultures of all lakes (average 9.5%, coefficient of variation (CV) 24%), with approximately the same growth efficiency (average 26%, CV 28%). Thus, humic lakes could support a higher bacterial biomass than clearwater lakes due to their larger DOC pools. The relevance of the results to planktonic food webs of humic and clearwater lakes is discussed.
从 10 个贫营养湖泊中采集的细菌浮游生物，代表了从清水到多腐殖质的梯度，在无菌过滤湖水的稀释培养中生长。稀释培养的静止期细菌生物量与湖泊中腐殖质和溶解有机碳 (DOC) 的含量呈正相关。所有湖泊的稀释培养中，DOC 池的总消耗比例大致相同（平均 9.5%，变异系数 (CV) 24%），生长效率也大致相同（平均 26%，CV 28%）。因此，由于腐殖质湖泊的 DOC 池较大，它们可以支持更高的细菌生物量，而清水湖泊则不然。讨论了这些结果与腐殖质和清水湖泊浮游食物网的相关性。
