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Open AccessFeature PaperArticle

Morphometry-Driven Divergence in Decadal Changes of Sediment Property in Floodplain Water Bodies

1
Graduate School of Environmental Science, Hokkaido University, Sapporo, Hokkaido 060-0810, Japan
2
Faculty of Environmental Earth Science, Hokkaido University, Sapporo, Hokkaido 060-0810, Japan
3
Graduate School of Agriculture, Hokkaido University, Sapporo, Hokkaido 060-8589, Japan
*
Authors to whom correspondence should be addressed.
Academic Editor: Leonardo V. Noto
Water 2021, 13(4), 469; https://doi.org/10.3390/w13040469
Received: 24 December 2020 / Revised: 28 January 2021 / Accepted: 5 February 2021 / Published: 11 February 2021
(This article belongs to the Special Issue Endangered Freshwater Ecosystems: Threats and Conservation Needs)
Sediments are potentially the internal source that supply nutrients to water in lentic to semi-lentic ecosystems. The understanding of factors that cause temporal changes in sediment properties is critical for the internal source management. This study investigated the spatial variations and temporal changes in sediment properties in relation to their controlling factors in water bodies of the Ishikari River, Northern Japan. Sediment data in 29 water bodies were measured twice (around 2005 and 2019) to study the temporal changes in sediment properties, and were compared using Generalized Linear Mixed Models (GLMMs). The controlling factors of sediment properties including catchment and morphometry were examined by partial least square (PLS) regression. Our results showed that the temporal change in sediment properties over decades was largely driven by morphometry, while land use in the catchment played a relatively minor role in those changes. The rate of change in organic matter (OM) differed among water bodies depending on their morphometry. The small and shallow water bodies provided suitable habitat for macrophytes that led to OM deposits, resulting to an increase in OM and OM to total nitrogen (TN) ratio over time. The consequences of these changes are important for internal source management and biodiversity conservation. View Full-Text
Keywords: floodplain water bodies; spatial and temporal changes; morphometry; sediment; organic matter; nitrogen; phosphorus floodplain water bodies; spatial and temporal changes; morphometry; sediment; organic matter; nitrogen; phosphorus
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MDPI and ACS Style

Pongsivapai, P.; Negishi, J.N.; Izumi, H.; Garrido, P.A.; Kuramochi, K. Morphometry-Driven Divergence in Decadal Changes of Sediment Property in Floodplain Water Bodies. Water 2021, 13, 469. https://doi.org/10.3390/w13040469

AMA Style

Pongsivapai P, Negishi JN, Izumi H, Garrido PA, Kuramochi K. Morphometry-Driven Divergence in Decadal Changes of Sediment Property in Floodplain Water Bodies. Water. 2021; 13(4):469. https://doi.org/10.3390/w13040469

Chicago/Turabian Style

Pongsivapai, Pongpet; Negishi, Junjiro N.; Izumi, Hokuto; Garrido, Paolo A.; Kuramochi, Kanta. 2021. "Morphometry-Driven Divergence in Decadal Changes of Sediment Property in Floodplain Water Bodies" Water 13, no. 4: 469. https://doi.org/10.3390/w13040469

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