## Response of Bosmina to climate variability and reduced nutrient loading in a large lake

2010
Müller, Helga
Journal article
##### Published in
Limnologica ; 40 (2010), 2. - pp. 92-96. - ISSN 0075-9511
##### Abstract
The long-term dynamics of the cladoceran Bosmina spp. were analysed in Lake Constance during the study period 1979 1998. During this period the lake ecosystem has been influenced strongly by changes in nutrient inflow (oligotrophication) and by climate variability associated with the North Atlantic Oscillation. Bosmina abundances declined strongly during the study period presumably as an indirect consequence of the reduced P loading of the lake. A detailed seasonally resolved analysis of Bosmina dynamics revealed that its abundance decline occurred throughout the year with the exception of the spring period. The lack of a population decline during spring may be attributed to the seasonal absence of the factor, e.g., food limitation and/or predation control by invertebrates causing the population decline. Additionally, climate variability had its strongest influence on Bosmina dynamics during spring and large climate-associated variability of Bosmina may have decreased the power to detect a significant reduction in spring Bosmina abundances with oligotrophication. However, when we account for the confounding influence of climate variability, the effects of oligotrophication are revealed more clearly also during the spring period. Likewise, the detectability of the influence of climate variability on spring Bosmina dynamics increases when accounting for the reduction of abundances in the course of oligotrophication.
##### Subject (DDC)
570 Biosciences, Biology
##### Keywords
North Atlantic Oscillation Oligotrophication,Spring bloom,Seasonal dynamics,Long-term time series
##### Cite This
ISO 690STRAILE, Dietmar, Helga MÜLLER, 2010. Response of Bosmina to climate variability and reduced nutrient loading in a large lake. In: Limnologica. 40(2), pp. 92-96. ISSN 0075-9511. Available under: doi: 10.1016/j.limno.2009.11.004
BibTex
@article{Straile2010Respo-7097,
year={2010},
doi={10.1016/j.limno.2009.11.004},
title={Response of Bosmina to climate variability and reduced nutrient loading in a large lake},
number={2},
volume={40},
issn={0075-9511},
journal={Limnologica},
pages={92--96},
author={Straile, Dietmar and Müller, Helga}
}

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<dcterms:abstract xml:lang="eng">The long-term dynamics of the cladoceran Bosmina spp. were analysed in Lake Constance during the study period 1979 1998. During this period the lake ecosystem has been influenced strongly by changes in nutrient inflow (oligotrophication) and by climate variability associated with the North Atlantic Oscillation. Bosmina abundances declined strongly during the study period presumably as an indirect consequence of the reduced P loading of the lake. A detailed seasonally resolved analysis of Bosmina dynamics revealed that its abundance decline occurred throughout the year with the exception of the spring period. The lack of a population decline during spring may be attributed to the seasonal absence of the factor, e.g., food limitation and/or predation control by invertebrates causing the population decline. Additionally, climate variability had its strongest influence on Bosmina dynamics during spring and large climate-associated variability of Bosmina may have decreased the  power to detect a significant reduction in spring Bosmina abundances with oligotrophication. However, when we account for the confounding influence of climate variability, the effects of oligotrophication  are revealed more clearly also during the spring period. Likewise, the detectability of the influence of climate variability on spring Bosmina dynamics increases when accounting for the reduction of abundances in the course of oligotrophication.</dcterms:abstract>
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