Open AccessPhytoplankton production in relation to physico‐chemical conditions in a small, oligotrophic subarctic lake in South Greenland
Author(s) -
Mæhl Peter
Publication year - 1982
Publication title -
ecography
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.973
H-Index - 128
eISSN - 1600-0587
pISSN - 0906-7590
DOI - 10.1111/j.1600-0587.1982.tb01057.x
Subject(s) - subarctic climate , phytoplankton , environmental science , stratification (seeds) , nutrient , ecology , oceanography , biology , geology , botany , seed dormancy , germination , dormancy
Phytoplankton production and physico‐chemical parameters were measured during the summers of 1976 and 1977 in Lake 95 at 60°52′N, 46°01′W (area 8 ha, z 6.9 m). The duration of lake stratification during summer was weather dependent. Concentrations of total‐CO 2 ranged from 2.04 mg l −1 (surface) to 4.02 mg l −1 (bottom during stratification). Nutrient concentrations were generally low, and systematic seasonal variation could not be detected with certainty. Vertical distribution of primary production typically showed a distinct maximum followed by a decline with depth. The low production, both per unit area (max. 60 mg C m −2 d −1 ) and per unit volume (max, 14.3 mg C m −3 d −1 ), and the annual production of 4.7 g C m −2 classified the lake as extremely oligotrophic.