Spatio-temporal impact of salinated mine water on Lake Jormasjärvi, Finland

Research output: Contribution to journalArticleScientificpeer-review

Abstract

The salinization of freshwater environments is a global concern, and one of the largest sources of salinated water is the mining industry. An increasing number of modern mines are working with low grade sulfide ores, resulting in increased volumes of potentially harmful saline drainage. We used water monitoring data, together with data on sedimentary fossil remains (cladoceran, diatom and chironomid), to analyze the spatio-temporal (5 sampling locations and 3 sediment depths) impact of salinated mine water originating from the Talvivaara/Terrafame open cast mine on multiple components of the aquatic ecosystem of Lake Jormasjärvi, Finland. Lake Jormasjärvi is the fourth and largest lake in a chain of lakes along the path of the mine water. Despite the location and large water volume, the mine water has changed the chemistry of Lake Jormasjärvi, reflected in increased electrical conductivity values since 2010. The ecological impact is significant around the inflow region of the lake, as all biological indicator groups show a rapid and directional shift towards new species composition. There is a clear trend in improved water quality as one moves further from the point of inflow, and as one looks back in time. Our results show that salinated mine water may induce rapid and large scale changes, even far downstream along a chain of several sinking basins. This is of special importance in cases where large amounts of waste water are processed in the vicinity of protected habitats.
Original languageEnglish
JournalEnvironmental Pollution
Volume247
Pages (from-to)1078-1088
Number of pages11
ISSN0269-7491
DOIs
Publication statusPublished - Apr 2019
MoE publication typeA1 Journal article-refereed

Fields of Science

  • CERIODAPHNIA-DUBIA
  • CLADOCERA
  • Chironomidae
  • Cladocera
  • DAPHNIA-MAGNA
  • Diatoms
  • FRESH-WATER
  • HISTORY
  • MAJOR IONS
  • MOUNTAINS
  • Minewater
  • SALINIZATION
  • Salinization
  • Spatio-temporal
  • TOXICITY
  • ZOOPLANKTON COMMUNITY
  • 1172 Environmental sciences

Cite this

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title = "Spatio-temporal impact of salinated mine water on Lake Jormasj{\"a}rvi, Finland",
abstract = "The salinization of freshwater environments is a global concern, and one of the largest sources of salinated water is the mining industry. An increasing number of modern mines are working with low grade sulfide ores, resulting in increased volumes of potentially harmful saline drainage. We used water monitoring data, together with data on sedimentary fossil remains (cladoceran, diatom and chironomid), to analyze the spatio-temporal (5 sampling locations and 3 sediment depths) impact of salinated mine water originating from the Talvivaara/Terrafame open cast mine on multiple components of the aquatic ecosystem of Lake Jormasj{\"a}rvi, Finland. Lake Jormasj{\"a}rvi is the fourth and largest lake in a chain of lakes along the path of the mine water. Despite the location and large water volume, the mine water has changed the chemistry of Lake Jormasj{\"a}rvi, reflected in increased electrical conductivity values since 2010. The ecological impact is significant around the inflow region of the lake, as all biological indicator groups show a rapid and directional shift towards new species composition. There is a clear trend in improved water quality as one moves further from the point of inflow, and as one looks back in time. Our results show that salinated mine water may induce rapid and large scale changes, even far downstream along a chain of several sinking basins. This is of special importance in cases where large amounts of waste water are processed in the vicinity of protected habitats.",
keywords = "CERIODAPHNIA-DUBIA, CLADOCERA, Chironomidae, Cladocera, DAPHNIA-MAGNA, Diatoms, FRESH-WATER, HISTORY, MAJOR IONS, MOUNTAINS, Minewater, SALINIZATION, Salinization, Spatio-temporal, TOXICITY, ZOOPLANKTON COMMUNITY, 1172 Environmental sciences",
author = "Lepp{\"a}nen, {Jaakko Johannes} and Luoto, {Tomi P.} and Jan Weckstr{\"o}m",
year = "2019",
month = "4",
doi = "10.1016/j.envpol.2019.01.111",
language = "English",
volume = "247",
pages = "1078--1088",
journal = "Environmental Pollution",
issn = "0269-7491",
publisher = "ELSEVIER SCI IRELAND LTD",

}

Spatio-temporal impact of salinated mine water on Lake Jormasjärvi, Finland. / Leppänen, Jaakko Johannes; Luoto, Tomi P.; Weckström, Jan.

In: Environmental Pollution, Vol. 247, 04.2019, p. 1078-1088.

Research output: Contribution to journalArticleScientificpeer-review

TY - JOUR

T1 - Spatio-temporal impact of salinated mine water on Lake Jormasjärvi, Finland

AU - Leppänen, Jaakko Johannes

AU - Luoto, Tomi P.

AU - Weckström, Jan

PY - 2019/4

Y1 - 2019/4

N2 - The salinization of freshwater environments is a global concern, and one of the largest sources of salinated water is the mining industry. An increasing number of modern mines are working with low grade sulfide ores, resulting in increased volumes of potentially harmful saline drainage. We used water monitoring data, together with data on sedimentary fossil remains (cladoceran, diatom and chironomid), to analyze the spatio-temporal (5 sampling locations and 3 sediment depths) impact of salinated mine water originating from the Talvivaara/Terrafame open cast mine on multiple components of the aquatic ecosystem of Lake Jormasjärvi, Finland. Lake Jormasjärvi is the fourth and largest lake in a chain of lakes along the path of the mine water. Despite the location and large water volume, the mine water has changed the chemistry of Lake Jormasjärvi, reflected in increased electrical conductivity values since 2010. The ecological impact is significant around the inflow region of the lake, as all biological indicator groups show a rapid and directional shift towards new species composition. There is a clear trend in improved water quality as one moves further from the point of inflow, and as one looks back in time. Our results show that salinated mine water may induce rapid and large scale changes, even far downstream along a chain of several sinking basins. This is of special importance in cases where large amounts of waste water are processed in the vicinity of protected habitats.

AB - The salinization of freshwater environments is a global concern, and one of the largest sources of salinated water is the mining industry. An increasing number of modern mines are working with low grade sulfide ores, resulting in increased volumes of potentially harmful saline drainage. We used water monitoring data, together with data on sedimentary fossil remains (cladoceran, diatom and chironomid), to analyze the spatio-temporal (5 sampling locations and 3 sediment depths) impact of salinated mine water originating from the Talvivaara/Terrafame open cast mine on multiple components of the aquatic ecosystem of Lake Jormasjärvi, Finland. Lake Jormasjärvi is the fourth and largest lake in a chain of lakes along the path of the mine water. Despite the location and large water volume, the mine water has changed the chemistry of Lake Jormasjärvi, reflected in increased electrical conductivity values since 2010. The ecological impact is significant around the inflow region of the lake, as all biological indicator groups show a rapid and directional shift towards new species composition. There is a clear trend in improved water quality as one moves further from the point of inflow, and as one looks back in time. Our results show that salinated mine water may induce rapid and large scale changes, even far downstream along a chain of several sinking basins. This is of special importance in cases where large amounts of waste water are processed in the vicinity of protected habitats.

KW - CERIODAPHNIA-DUBIA

KW - CLADOCERA

KW - Chironomidae

KW - Cladocera

KW - DAPHNIA-MAGNA

KW - Diatoms

KW - FRESH-WATER

KW - HISTORY

KW - MAJOR IONS

KW - MOUNTAINS

KW - Minewater

KW - SALINIZATION

KW - Salinization

KW - Spatio-temporal

KW - TOXICITY

KW - ZOOPLANKTON COMMUNITY

KW - 1172 Environmental sciences

U2 - 10.1016/j.envpol.2019.01.111

DO - 10.1016/j.envpol.2019.01.111

M3 - Article

VL - 247

SP - 1078

EP - 1088

JO - Environmental Pollution

JF - Environmental Pollution

SN - 0269-7491

ER -