Zooplankton production in the eastern tropical Atlantic Ocean: Net growth efficiency and P:B in terms of carbon, nitrogen, and phosphorus
Zooplankton production in the eastern tropical Atlantic Ocean: Net growth efficiency and P:B in terms of carbon, nitrogen, and phosphorus
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热带大西洋东部浮游动物生产：净生长效率和碳、氮、磷方面的 P:B
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发表时间：
1982
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通讯作者：
R. L. Borgne
中科院分区：
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作者：
R. L. Borgne
根据测量的排泄率和净生长效率（KJ），计算出O100-m混合浮游动物的碳、氮和磷的日产量。后者是根据微型浮游动物（50-200 pm）和中型浮游动物（200- 5000 pm）的氮：磷（N: P）和碳：氮（C:N）比，它们的排泄和同化效率，以及代表几个近海生态系统的21个站点中每个站点几天内的颗粒食物物质计算得出的。中浮游动物C、N、P的平均K值分别为0.372、0.489、0.373，微浮游动物N、P的平均K值分别为0.568、0.480。微型浮游动物（范围：34-230%）的P:B是大型浮游动物（范围：E-62%）的3.8倍。还对一些特殊的动物进行了计算，如萨尔帕和格劳克斯（裸鳃）。混合种群的复杂性解释了中浮游动物P:B或K与通常的环境因子之间缺乏显著的相关性，然而，与颗粒食物的N:P比或同化数（也指混合种群）的显著相关性表明P:B和K值并不是那么不稳定。热带地区的近海浮游动物种群占世界海洋的42%，但人们对它们的生产情况知之甚少。Le Borgne（1978）给出了原因，并与评估浮游动物产量的方法有关。大部分热带海域的浮游动物总生产量(P)值为
Daily production rates in terms of carbon, nitrogen, and phosphorus are calculated for O100-m mixed zooplankton from its measured excretion rates and net growth efficiency (KJ. The latter was calculated from nitrogen : phosphorus (N : P) and carbon:nitrogen (C:N) ratios of microzooplankton (50-200 pm) and mesozooplankton (200-5,000 pm), their excretion and assimilation efficiencies, and particulate food material over periods of several days at each of 21 stations representing several offshore ecosystems. Average K, values for mesozooplankton were 0.372, 0.489, and 0.373 in terms of C, N, and P and 0.568 and 0.480 in terms of N and P for microzooplankton. P:B of microzooplankton (range: 34-230%) is 3.8 times that of mcsozooplankton (E-62%). Calculations were also made for particular animals such as Salpa and Glaucus (nudibranch). The lack of a significant correlation between mesozooplankton P:B or K, and the usual environmental factors is explained by the complexity of mixed populations, However, significant correlations with the N:P ratio of particulate food, or the assimilation number (that also refer to mixed populations), show that P:B and K, values are not so erratic. Relatively little is known about the production of offshore populations of zooplankton in tropical areas although they account for 42% of the world ocean. The reasons are given by Le Borgne (1978) and are concerned with the methods of evaluating zooplankton production. Most of the values of total zooplankton production (P) in tropical seas have