Journal
AQUATIC ECOLOGY
Volume 42, Issue 4, Pages 617-627Publisher
SPRINGER
DOI: 10.1007/s10452-007-9146-7
Keywords
Zooplankton; Seston; Eicosapentaenoic acid; Predictor of growth rate
Categories
Funding
- Ministry of Education and Sciences of Russian Federation [REC-002]
- U. S. Civilian Research & Development Foundation for the Independent States of the Former Soviet Union (CRDF)
- Ministry of Education and Sciences of Russian Federation
- Russian Science Support Foundation
Ask authors/readers for more resources
Specific growth rates (based on biomass increment in unit time) of Daphnia fed natural reservoir seston from a eutrophic Siberian reservoir were studied during four vegetation seasons in a laboratory flow-through system. Concentrations of particulate C, N, and P in reservoir seston < 115 mu m were comparatively high, 1.9, 0.2, and 0.05 mg l-1, respectively; maximum C:P ratio was 259 mol:mol. According to conventional thresholds, concentrations of elements and their stoichiometry did not limit the growth rate of Daphnia. Eicosapentaenoic acid (EPA) in seston significantly effected the growth rates at concentrations up to 13 mu g l-1(regression ANOVAR F-test value was 7.91), but not above this concentration. Thus, we consider this concentration of EPA in seston < 115 mu m to be the limiting concentration of EPA for the growth of Daphnia (longispina group), i.e., below this concentration EPA was the best single predictor of the growth of Daphnia.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available