Titlebook: Limnological Analysis; Robert G. Wetzel,Gene E. Likens Book 19912nd edition Springer-Verlag New York 1991 ecology.ecosystem.fauna.limnolog

窒息

CORD

unstable-angina

掃興

致命

水土

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aplomb

Zooplankton Feeding,Direct consumption by zooplankton can have appreciable effects upon phytoplankton and bacterioplankton populations. By means of selective grazing, zooplankton can influence the seasonal succession of the phytoplankton (cf., Porter (1977)].

resilience

Comprise

octogenarian

Inorganic Nutrients: Nitrogen, Phosphorus, and Other Nutrients,ters. The major basic cations, calcium, magnesium, sodium, and potas-sium, usually are required in very low quantities, but their concentrations in fresh water can influence the osmoregulation of organisms.