大亚湾海域细菌生长效率及其与贫氧现象的关系

来源 :第五届全国海洋生态研讨会暨中国生态学学会海洋生态专业委员会2015年学术年会 | 被引量 : 0次 | 上传用户:zhoujhipanel
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  细菌代谢在水生生态系统中扮演着二次生产与呼吸耗氧的双重作用;而细菌生长效率是综合评估细菌代谢对海洋生物生产力及碳平衡贡献作用的重要指标.本文对大亚湾细菌生长效率的时空分布、昼夜变化节律进行了研究,并揭示了细菌代谢与大亚湾水体潜在贫氧现象的关系.大亚湾海域细菌生长效率在夏季与冬季分别为0.14和0.22,低于在已报道的其它近海或河口水域的平均水平.细菌生产力及细菌呼吸率的昼夜波动幅度可达3-8倍及2-3倍,表明此类生态过程的短时间尺度波动对更长时间尺度近海动力学过程的评估有着重要影响.
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