Long-term Assessment of the Environmental Conditions of Lake Nakaumi (Japan) Using Multivariate AZTI Marine Biotic Index (M-AMBI)
This study aimed to identify and understand the temporal changes in the benthic ecosystem of Lake Nakaumi, which is an enclosed brackish water body, using the multivariate AZTI marine biotic index (M-AMBI) as biotic indicators and to evaluate the benthos response to the reclamation project for the l...
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| Veröffentlicht in: | Journal of Water and Environment Technology 2019, Vol.17(6), pp.407-419 |
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| container_title | Journal of Water and Environment Technology |
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| creator | Fujii, Takatoshi Umehara, Akira Date, Yusuke Aoki, Kaoru Suzaki, Moemi Hino, Eiichi Nishijima, Wataru |
| description | This study aimed to identify and understand the temporal changes in the benthic ecosystem of Lake Nakaumi, which is an enclosed brackish water body, using the multivariate AZTI marine biotic index (M-AMBI) as biotic indicators and to evaluate the benthos response to the reclamation project for the lake. The monitoring data collected during 1994–2012 were used. Paraprionospio patiens, classified as second-order opportunistic species, appeared with high frequency in all the survey sites throughout the investigation period and was mostly dominant. Therefore, the variation of AMBI was small during the survey period. However, the species richness and Shannon diversity significantly increased from 1994 at the center of the lake. The benthic community of Lake Nakaumi was characterized by a coexistence of marine and brackish benthos and controlled by the Cl− concentration through the change in their proportions. |
| doi_str_mv | 10.2965/jwet.19-032 |
| format | Article |
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The monitoring data collected during 1994–2012 were used. Paraprionospio patiens, classified as second-order opportunistic species, appeared with high frequency in all the survey sites throughout the investigation period and was mostly dominant. Therefore, the variation of AMBI was small during the survey period. However, the species richness and Shannon diversity significantly increased from 1994 at the center of the lake. The benthic community of Lake Nakaumi was characterized by a coexistence of marine and brackish benthos and controlled by the Cl− concentration through the change in their proportions.</description><identifier>ISSN: 1348-2165</identifier><identifier>EISSN: 1348-2165</identifier><identifier>DOI: 10.2965/jwet.19-032</identifier><language>eng</language><publisher>Tokyo: Japan Society on Water Environment</publisher><subject>Aquatic ecosystems ; Benthos ; biodiversity ; brackish lake ; Brackish water ; Coexistence ; Environmental assessment ; Environmental changes ; Environmental conditions ; High frequency ; Lakes ; macrobenthic community ; Multivariate analysis ; organic enrichment ; Polls & surveys ; Reclamation ; Species diversity ; Species richness ; Surveying ; Temporal variations ; Water bodies</subject><ispartof>Journal of Water and Environment Technology, 2019, Vol.17(6), pp.407-419</ispartof><rights>2019 Japan Society on Water Environment</rights><rights>2019. 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| subjects | Aquatic ecosystems Benthos biodiversity brackish lake Brackish water Coexistence Environmental assessment Environmental changes Environmental conditions High frequency Lakes macrobenthic community Multivariate analysis organic enrichment Polls & surveys Reclamation Species diversity Species richness Surveying Temporal variations Water bodies |
| title | Long-term Assessment of the Environmental Conditions of Lake Nakaumi (Japan) Using Multivariate AZTI Marine Biotic Index (M-AMBI) |
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