A Case Study of a 10-Year Change in the Vegetation and Water Environments of Volcanic Mires in South-Western Japan

Variations in the groundwater environments and dominant species of volcanic mire vegetation were monitored for 10 years in a volcanic area in south-western Japan. The correlation between changes in groundwater environments and vegetation revealed that changes in water environments determine the domi...

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Main Author: Akira Haraguchi
Format: Article
Language:English
Published: MDPI AG 2022-12-01
Series:Water
Subjects:
Online Access:https://www.mdpi.com/2073-4441/14/24/4132
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author Akira Haraguchi
author_facet Akira Haraguchi
author_sort Akira Haraguchi
collection DOAJ
description Variations in the groundwater environments and dominant species of volcanic mire vegetation were monitored for 10 years in a volcanic area in south-western Japan. The correlation between changes in groundwater environments and vegetation revealed that changes in water environments determine the dominant species of volcanic mire vegetation. The amount of spring water supplied to the mire vegetation determines the water-table depth and the subsequent nutrient supply. The <i>Sphagnum</i> spp. coverage decreased with increasing base cation concentrations, particularly the Ca<sup>2+</sup> concentration up to 40 mg/L. The <i>Moliniopsis japonica</i> coverage increased with the decreasing <i>Sphagnum</i> spp. coverage. The nutritional variables of water supplied to vegetation affected by volcanic activity changed the type of dominant species. A 10-year change in vegetation in the volcanic mires revealed that vegetation succession in volcanic mires evolved from ombrogenous to minerogenous and from minerogenous to ombrogenous communities. The water environment promoted changes in the dominant species.
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spelling doaj.art-4bb2a8da50784d1b83da2a8384a193632023-11-24T18:43:28ZengMDPI AGWater2073-44412022-12-011424413210.3390/w14244132A Case Study of a 10-Year Change in the Vegetation and Water Environments of Volcanic Mires in South-Western JapanAkira Haraguchi0Faculty of Environmental Engineering, The University of Kitakyushu, Hibikino 1-1, Wakamatsu, Kitakyushu 808 0135, Fukuoka, JapanVariations in the groundwater environments and dominant species of volcanic mire vegetation were monitored for 10 years in a volcanic area in south-western Japan. The correlation between changes in groundwater environments and vegetation revealed that changes in water environments determine the dominant species of volcanic mire vegetation. The amount of spring water supplied to the mire vegetation determines the water-table depth and the subsequent nutrient supply. The <i>Sphagnum</i> spp. coverage decreased with increasing base cation concentrations, particularly the Ca<sup>2+</sup> concentration up to 40 mg/L. The <i>Moliniopsis japonica</i> coverage increased with the decreasing <i>Sphagnum</i> spp. coverage. The nutritional variables of water supplied to vegetation affected by volcanic activity changed the type of dominant species. A 10-year change in vegetation in the volcanic mires revealed that vegetation succession in volcanic mires evolved from ombrogenous to minerogenous and from minerogenous to ombrogenous communities. The water environment promoted changes in the dominant species.https://www.mdpi.com/2073-4441/14/24/4132<i>Sphagnum</i>successionvolcanopeatlandwater chemistry
spellingShingle Akira Haraguchi
A Case Study of a 10-Year Change in the Vegetation and Water Environments of Volcanic Mires in South-Western Japan
Water
<i>Sphagnum</i>
succession
volcano
peatland
water chemistry
title A Case Study of a 10-Year Change in the Vegetation and Water Environments of Volcanic Mires in South-Western Japan
title_full A Case Study of a 10-Year Change in the Vegetation and Water Environments of Volcanic Mires in South-Western Japan
title_fullStr A Case Study of a 10-Year Change in the Vegetation and Water Environments of Volcanic Mires in South-Western Japan
title_full_unstemmed A Case Study of a 10-Year Change in the Vegetation and Water Environments of Volcanic Mires in South-Western Japan
title_short A Case Study of a 10-Year Change in the Vegetation and Water Environments of Volcanic Mires in South-Western Japan
title_sort case study of a 10 year change in the vegetation and water environments of volcanic mires in south western japan
topic <i>Sphagnum</i>
succession
volcano
peatland
water chemistry
url https://www.mdpi.com/2073-4441/14/24/4132
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