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Spatial and temporal responses of cladoceran and diatom communities to Cu and Zn mining impacts in Lake Pyhäjärvi (Finland).

Bibliographic Details
Title: Spatial and temporal responses of cladoceran and diatom communities to Cu and Zn mining impacts in Lake Pyhäjärvi (Finland).
Authors: Atti, Sanna, Rantala, Marttiina, Weckström, Jan
Source: Hydrobiologia; Aug2026, Vol. 853 Issue 14, p4039-4061, 23p
Subject Terms: Cladocera, Diatoms, Sediment sampling, Heavy metal toxicology, Lakes, Environmental history, Paleolimnology
Abstract: Our research aimed to study the long-term impacts of Cu and Zn mining across Lake Pyhäjärvi (Finland), focusing on biological community responses. We applied paleolimnological methods on two short sediment cores and two top–bottom samples (before and after mining impact), analysing metals to examine the extent of mining impact and diatom and cladoceran communities to study the ecological consequences of mining. Our results showed that mining-induced metal pollution affected the entire Lake Pyhäjärvi, and sedimentary metal concentrations were many orders of magnitude higher in the most heavily impacted basin, Junttiselkä, compared to the other analysed basins. Compared to diatom communities, cladoceran communities showed fewer temporal responses but more distinct spatial changes attributed to habitat variability. Changes in the diatom community in the most polluted basin, Junttiselkä, followed the trends in metals. Ecological changes were more subtle in the main basin of the lake, with the exception of the Emolahti sub-basin, which showed a shift to diatom taxa indicative of disturbed conditions. Our results demonstrate how the paleolimnological approach may be used to complement contemporary lake monitoring in morphologically diverse large lakes, where available monitoring data are scarce. [ABSTRACT FROM AUTHOR]
Copyright of Hydrobiologia is the property of Springer Nature and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
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  – Url: https://dx.doi.org/doi:10.1007/s10750-026-06214-y
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  Data: Spatial and temporal responses of cladoceran and diatom communities to Cu and Zn mining impacts in Lake Pyhäjärvi (Finland).
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  Data: <searchLink fieldCode="AR" term="%22Atti%2C+Sanna%22">Atti, Sanna</searchLink><br /><searchLink fieldCode="AR" term="%22Rantala%2C+Marttiina%22">Rantala, Marttiina</searchLink><br /><searchLink fieldCode="AR" term="%22Weckström%2C+Jan%22">Weckström, Jan</searchLink>
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  Data: Hydrobiologia; Aug2026, Vol. 853 Issue 14, p4039-4061, 23p
– Name: Subject
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  Group: Su
  Data: <searchLink fieldCode="DE" term="%22Cladocera%22">Cladocera</searchLink><br /><searchLink fieldCode="DE" term="%22Diatoms%22">Diatoms</searchLink><br /><searchLink fieldCode="DE" term="%22Sediment+sampling%22">Sediment sampling</searchLink><br /><searchLink fieldCode="DE" term="%22Heavy+metal+toxicology%22">Heavy metal toxicology</searchLink><br /><searchLink fieldCode="DE" term="%22Lakes%22">Lakes</searchLink><br /><searchLink fieldCode="DE" term="%22Environmental+history%22">Environmental history</searchLink><br /><searchLink fieldCode="DE" term="%22Paleolimnology%22">Paleolimnology</searchLink>
– Name: Abstract
  Label: Abstract
  Group: Ab
  Data: Our research aimed to study the long-term impacts of Cu and Zn mining across Lake Pyhäjärvi (Finland), focusing on biological community responses. We applied paleolimnological methods on two short sediment cores and two top–bottom samples (before and after mining impact), analysing metals to examine the extent of mining impact and diatom and cladoceran communities to study the ecological consequences of mining. Our results showed that mining-induced metal pollution affected the entire Lake Pyhäjärvi, and sedimentary metal concentrations were many orders of magnitude higher in the most heavily impacted basin, Junttiselkä, compared to the other analysed basins. Compared to diatom communities, cladoceran communities showed fewer temporal responses but more distinct spatial changes attributed to habitat variability. Changes in the diatom community in the most polluted basin, Junttiselkä, followed the trends in metals. Ecological changes were more subtle in the main basin of the lake, with the exception of the Emolahti sub-basin, which showed a shift to diatom taxa indicative of disturbed conditions. Our results demonstrate how the paleolimnological approach may be used to complement contemporary lake monitoring in morphologically diverse large lakes, where available monitoring data are scarce. [ABSTRACT FROM AUTHOR]
– Name: Abstract
  Label:
  Group: Ab
  Data: <i>Copyright of Hydrobiologia is the property of Springer Nature and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.)
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      – Type: doi
        Value: 10.1007/s10750-026-06214-y
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      – Code: eng
        Text: English
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      – SubjectFull: Cladocera
        Type: general
      – SubjectFull: Diatoms
        Type: general
      – SubjectFull: Sediment sampling
        Type: general
      – SubjectFull: Heavy metal toxicology
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      – SubjectFull: Paleolimnology
        Type: general
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      – TitleFull: Spatial and temporal responses of cladoceran and diatom communities to Cu and Zn mining impacts in Lake Pyhäjärvi (Finland).
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              Text: Aug2026
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              Y: 2026
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