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Thesis Advisor沈韫芬
Degree Grantor中国科学院水生生物研究所
Place of Conferral中国科学院水生生物研究所
Degree Discipline水生生物学
Abstract本文报道了1987.3-1988.3武汉东湖原生动物的生产量和呼吸量。生产量计算中所用的有关原生动物世代时间(G)是通过实验室培养和野外观察得到的。经统计学处理,在水温6-28 ℃范围内,原生动物世代时间(G)同虫体大小(V)和水温(T)呈线性相关:log_(10)G(小时) = 0.818 + 0.216log_(10)V(微米~3) - 0.027~T(C) (P < 0.05)东湖1987-1988年度原生动物日均生产量(干量)结果为:I站95.0毫米/米~3/天,II站73.8毫克/米~3/天。随着营养物质日趋积累,从1963年至今,东湖原生动物日均生产量也呈增加趋势,I站以32.53增加到95.0毫克/米~3/天;II站从34.14增加到73.8毫克/米~3/天。原生动物呼吸量是利用Gilson差分呼吸仪测定的,平均日呼吸量I站104.45毫升O_2/米~3/天,II站73.2毫升/O_2/米~3/天。根据生产量和呼吸量,计算的原生动物净生产效率为48.08-53.66%, 年平均P/B系数为340-350 本文对原生动物和其他水生动物的生产量和净生产效率进行比较,原生动物生产量大于其他各类浮游动物总生产量,从初级生产与次级生产的角度来看,原生动物与藻类之间的生产效率为5.52-9.85%, 也大于其他水生动物。实验结果还说明东湖的富营养化日趋严重。文中还对原生动物在水生态系中的作用进行了分析。
Other AbstractThis paper reports the results of estimations of production and respiration of planktonic Protozoa in lake Donghu, Wuhan. The experiments were carried out during Match 1987-Match 1988. Data of protozoan generation time used in calculation were obtained in laboratory culture and field observation. Within the range of water temperature 6-28 ℃, statistics showed that the protozoan generation time (G) has a linear correlation organism size (V) and water temperature (T): logG(hr) = 0.818 + 0.216logV(um~3) - 0.027T(℃) (P 0.05) During 1987-1988, the mean daily production(dry weight) of Protozoa at two stations in the Lake are 95.0mg/m~3/d(station I) and 73.8mg/m~3/d(station II) respectively. with the gradually accumulation of nutrients in the Lake, to compare 1963, the mean daily production of Protozoa has been increasing rapidly, from 32.25 to 95.0mg/m~3/d at station I and from 34.14 to 73.8mg/m~3/d at station II. The measurement of protozoan respiration was carried out with Gilson Differential Respirator. The protozoanrespiation rates at station I and II are 104.45 and 73.2 ml/m~3/d respectively. According to the data of production and respiration of Protozoa, the protozoan net production efficiencies at two stations are caculated. They are 48.08% (station I) and 53.66% (station II). The average annual P/B ratior is 350 at station I and 340 at station II. In the paper the production and net production efficiency of Protozoa are compared with those of other aquatic animals of the lake. It showed that production of Protozoa is greater than the total production of other zooplanktons(Rotifera, Cladocera and copepoda). Based on the relationship of the primary production and secondary production, the effeciency of Protozoa and algae is 5.52-9.85% which is larger than that of the other aquatic animals. The results also showed that the eutro phication in Donghu Lake becomes more and more serious. The roles of Protozoa in aquatic eco system are analysed.
Document Type学位论文
Recommended Citation
GB/T 7714
徐润林. 武汉东湖浮游原生动物生产量的研究[D]. 中国科学院水生生物研究所. 中国科学院水生生物研究所,1988.
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