Plankton production off Plymouth and the mouth of the English Channel in 1939

摘要: A quantitative seasonal survey of the phytoplankton and small zooplankton has been made from end January to August 1939, at a station, L 4 , with supplementary observations station off Rame Head, both near Plymouth. The results are compared those fuller in 1934. spring maximum numbers plant cells was late, not being reached until middle April. monthly means total animals caught were same order two years, but copepods plus copepodites 1939 only two-thirds