Integrated 3D modelling of water circulation and dynamics of phytoplankton: The effects of a planned reservoir

Arto Inkala, Seppo Helsten, M. Heikkinen

Research output: Contribution to journalArticleScientificpeer-review

2 Citations (Scopus)

Abstract

The FINNALGA model has been used to assess the effects of a planned reservoir, Vuotos, on a downstream lake, Kemijärvi, in northern Finland. The model is based on 3D calculations of water currents and water quality. The simulation results are compared with the measurements and the effects of Vuotos on the present situation are assessed. The assessments on increased nutrient inputs are based on the earlier experiences of an existing similar reservoir at Porttipahta. Many scenarios were made to obtain as versatile assessment as possible. According to the model simulations, the average concentrations of algal biomass will increase by 20 - 60 %, while the maximum concentrations will double during the first years of the reservoir Vuotos. The effects will be most appeared in the northern part of the lake, near the estuary of Kemijoki. In the eastern parts of the lake the effects will be smaller, because it is not on the through flow route of Kemijoki.
Original languageEnglish
Pages (from-to)681-688
JournalInternational Review of Hydrobiology
Volume83
Publication statusPublished - 1998
MoE publication typeA1 Journal article-refereed

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water flow
phytoplankton
lakes
modeling
lake
water currents
water
Finland
simulation models
estuaries
water quality
simulation
biomass
estuary
nutrients
effect
nutrient

Cite this

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title = "Integrated 3D modelling of water circulation and dynamics of phytoplankton: The effects of a planned reservoir",
abstract = "The FINNALGA model has been used to assess the effects of a planned reservoir, Vuotos, on a downstream lake, Kemij{\"a}rvi, in northern Finland. The model is based on 3D calculations of water currents and water quality. The simulation results are compared with the measurements and the effects of Vuotos on the present situation are assessed. The assessments on increased nutrient inputs are based on the earlier experiences of an existing similar reservoir at Porttipahta. Many scenarios were made to obtain as versatile assessment as possible. According to the model simulations, the average concentrations of algal biomass will increase by 20 - 60 {\%}, while the maximum concentrations will double during the first years of the reservoir Vuotos. The effects will be most appeared in the northern part of the lake, near the estuary of Kemijoki. In the eastern parts of the lake the effects will be smaller, because it is not on the through flow route of Kemijoki.",
author = "Arto Inkala and Seppo Helsten and M. Heikkinen",
year = "1998",
language = "English",
volume = "83",
pages = "681--688",
journal = "International Review of Hydrobiology",
issn = "1434-2944",
publisher = "Wiley-VCH Verlag",

}

Integrated 3D modelling of water circulation and dynamics of phytoplankton : The effects of a planned reservoir. / Inkala, Arto; Helsten, Seppo; Heikkinen, M.

In: International Review of Hydrobiology, Vol. 83, 1998, p. 681-688.

Research output: Contribution to journalArticleScientificpeer-review

TY - JOUR

T1 - Integrated 3D modelling of water circulation and dynamics of phytoplankton

T2 - The effects of a planned reservoir

AU - Inkala, Arto

AU - Helsten, Seppo

AU - Heikkinen, M.

PY - 1998

Y1 - 1998

N2 - The FINNALGA model has been used to assess the effects of a planned reservoir, Vuotos, on a downstream lake, Kemijärvi, in northern Finland. The model is based on 3D calculations of water currents and water quality. The simulation results are compared with the measurements and the effects of Vuotos on the present situation are assessed. The assessments on increased nutrient inputs are based on the earlier experiences of an existing similar reservoir at Porttipahta. Many scenarios were made to obtain as versatile assessment as possible. According to the model simulations, the average concentrations of algal biomass will increase by 20 - 60 %, while the maximum concentrations will double during the first years of the reservoir Vuotos. The effects will be most appeared in the northern part of the lake, near the estuary of Kemijoki. In the eastern parts of the lake the effects will be smaller, because it is not on the through flow route of Kemijoki.

AB - The FINNALGA model has been used to assess the effects of a planned reservoir, Vuotos, on a downstream lake, Kemijärvi, in northern Finland. The model is based on 3D calculations of water currents and water quality. The simulation results are compared with the measurements and the effects of Vuotos on the present situation are assessed. The assessments on increased nutrient inputs are based on the earlier experiences of an existing similar reservoir at Porttipahta. Many scenarios were made to obtain as versatile assessment as possible. According to the model simulations, the average concentrations of algal biomass will increase by 20 - 60 %, while the maximum concentrations will double during the first years of the reservoir Vuotos. The effects will be most appeared in the northern part of the lake, near the estuary of Kemijoki. In the eastern parts of the lake the effects will be smaller, because it is not on the through flow route of Kemijoki.

M3 - Article

VL - 83

SP - 681

EP - 688

JO - International Review of Hydrobiology

JF - International Review of Hydrobiology

SN - 1434-2944

ER -