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Trace Metals and Diatom Stratigraphy along the Sill between Lakes Telaga Warna and Telaga Pengilon, Dieng, Central Java, Indonesia

Author

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  • Kenanga Sari

    (Center for Paleolimnoloy (CPalim), Universitas Diponegoro, Semarang 50241, Indonesia
    Department Biology, Faculty of Science and Mathematics, Universitas Diponegoro, Semarang 50275, Indonesia)

  • Tri Retnaningsih Soeprobowati

    (Center for Paleolimnoloy (CPalim), Universitas Diponegoro, Semarang 50241, Indonesia
    Department Biology, Faculty of Science and Mathematics, Universitas Diponegoro, Semarang 50275, Indonesia
    School of Postgraduate Studies, Universitas Diponegoro, Semarang 50241, Indonesia)

  • Jumari Jumari

    (Center for Paleolimnoloy (CPalim), Universitas Diponegoro, Semarang 50241, Indonesia
    Department Biology, Faculty of Science and Mathematics, Universitas Diponegoro, Semarang 50275, Indonesia)

  • Riche Hariyati

    (Center for Paleolimnoloy (CPalim), Universitas Diponegoro, Semarang 50241, Indonesia
    Department Biology, Faculty of Science and Mathematics, Universitas Diponegoro, Semarang 50275, Indonesia)

  • Jerry R. Miller

    (Department of Geosciences and Natural Resources, Western Carolina University, Cullowhee, NC 28723, USA)

Abstract

This study examines the spatiotemporal variations in diatom assemblages and selected metal concentrations (Pb, Cr, Cd, Al, and Zn) in bed sediments of lakes Telaga Pengilon and Telaga Warna in Dieng, Indonesia to document natural and/or anthropogenic changes in the local aquatic and terrestrial environment. The analyses focused on sediments collected from a 150-cm core taken from a sill between the two lakes, which exhibit significant differences in water chemistry. The core was subdivided into 14 stratigraphic intervals allowing for an analysis of the vertical (and temporal) variations in diatom composition and selected metal concentrations. A total of 103 taxa from 25 genera were identified in the core. Diatom assemblages were dominated by Eunotia (56%), Pinnularia (17.2%), and Frustulia (4.6%). The most abundant species was Eunotia, a diatom that can tolerate a wide range of pH conditions. Given that pH within waters of the two lakes differs significantly, the abundance of Eunotia suggests that pH in the area between Telaga Pengilon and Telaga Warna varied through time, potentially ranging from about 2.5 to 8. Changes in pH were likely related to alterations in hydrological conditions. Metal concentrations varied with depth/time of deposition within the core. Peak metal concentrations appear to be related to the influx of debris from a volcanic eruption. Based on the principle component analysis (PCA), the input of volcanic materials also influenced diatom assemblages and resulted in a distinct layer of broken diatom frustules. Relatively low metal concentrations in surface sediments suggest that the erosion of hillslope soils in response to agricultural activity did not significantly impact the lakes.

Suggested Citation

  • Kenanga Sari & Tri Retnaningsih Soeprobowati & Jumari Jumari & Riche Hariyati & Jerry R. Miller, 2021. "Trace Metals and Diatom Stratigraphy along the Sill between Lakes Telaga Warna and Telaga Pengilon, Dieng, Central Java, Indonesia," Sustainability, MDPI, vol. 13(7), pages 1-14, March.
    • Handle: RePEc:gam:jsusta:v:13:y:2021:i:7:p:3821-:d:527344
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    References listed on IDEAS

    as
    1. Zhongya Fan & Wencai Wang & Chunyan Tang & Yiping Li & Zhong Wang & Shu Lin & Fantang Zeng, 2019. "Targeting Remediation Dredging by Ecological Risk Assessment of Heavy Metals in Lake Sediment: A Case Study of Shitang Lake, China," Sustainability, MDPI, vol. 11(24), pages 1-10, December.
    2. Wen Liu & Long Ma & Jilili Abuduwaili, 2020. "Anthropogenic Influences on Environmental Changes of Lake Bosten, the Largest Inland Freshwater Lake in China," Sustainability, MDPI, vol. 12(2), pages 1-14, January.
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