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Small‐scale turbulence and zooplankton metabolism: Effects of turbulence on heartbeat rates of planktonic crustaceans
Author(s) -
Alcaraz Miguel,
Saiz Enric,
Calbet Albert
Publication year - 1994
Publication title -
limnology and oceanography
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.7
H-Index - 197
eISSN - 1939-5590
pISSN - 0024-3590
DOI - 10.4319/lo.1994.39.6.1465
Subject(s) - zooplankton , plankton , copepod , crustacean , biology , turbulence , oceanography , heartbeat , ecology , environmental science , geography , geology , meteorology , computer security , computer science
The effects of small‐scale turbulence on heartbeat rate (HBR), an estimator of zooplankton metabolism, have been determined in some freshwater and marine planktonic crustaceans. Quantified levels of turbulence (∼5 mm 2 s −3 ) enhanced HBR in Daphnia by 14.3% compared to calm water conditions. Supplementary observations with four other species showed that these species also had higher HBR in turbulent than in calm situations, the average percent increase ranging from ∼5% in a marine cladoceran ( Penilia avirrostris ) to 93% in a marine copepod (female Calanus gracilis ). These results agree with previous studies that indicated a relevant effect of small‐scale turbulence on behavior and rate processes of planktonic crustaceans.