The phosphorus load and the variation of the trophic states of Cirata Reservoir (West Java, Indonesia) from 1988 to 2017

Abstract. Pratiwi NTM, Imran Z, Ayu IP, Iswantari A, Wulandari DY. 2020. The phosphorus load and the variation of the trophic states of Cirata Reservoir (West Java, Indonesia) from 1988 to 2017. Biodiversitas 21: 4176-4183. Cirata Reservoir was constructed in 1987 between Saguling and Jatiluhur Rese...

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Autores principales:	Niken Pratiwi, ZULHAMSYAH IMRAN, INNA PUSPA AYU, ALIATI ISWANTARI, DWI YUNI WULANDARI
Formato:	article
Lenguaje:	EN
Publicado:	MBI & UNS Solo 2020
Materias:	cascading reservoirs, cirata reservoir, eutrophication, floating cage Biology (General) QH301-705.5
Acceso en línea:	https://doaj.org/article/7e868fdd78dd41b299ca4be075b849d9
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spelling	oai:doaj.org-article:7e868fdd78dd41b299ca4be075b849d92021-11-22T00:41:43ZThe phosphorus load and the variation of the trophic states of Cirata Reservoir (West Java, Indonesia) from 1988 to 20171412-033X2085-472210.13057/biodiv/d210931https://doaj.org/article/7e868fdd78dd41b299ca4be075b849d92020-08-01T00:00:00Zhttps://smujo.id/biodiv/article/view/5980https://doaj.org/toc/1412-033Xhttps://doaj.org/toc/2085-4722Abstract. Pratiwi NTM, Imran Z, Ayu IP, Iswantari A, Wulandari DY. 2020. The phosphorus load and the variation of the trophic states of Cirata Reservoir (West Java, Indonesia) from 1988 to 2017. Biodiversitas 21: 4176-4183. Cirata Reservoir was constructed in 1987 between Saguling and Jatiluhur Reservoirs; these are the three man-made cascading lakes in West Java, Indonesia. Cirata Reservoir has been used for floating cage aquaculture activities. The high organic content from the remains of the fish pellets raised the phosphorus (P) load, resulting in the eutrophication of the reservoirs. This research was aimed to assess the P load and the variation of the trophic states of the reservoir from year 1988 to 2017. The trophic states and the nutrients’ conditions of the water were determined using Myxophycean Index. Four groups of phytoplankton were found in the reservoir during observation: Cyanophyceae, Chlorophyceae, Bacillariophyceae, and Dinophyceae. In addition, one group was found in a smaller number of observations: Eugolenophyceae. Although the community structure of the phytoplankton has changed, the Cyanophyceae was always dominant in response against the condition of nutrients, especially P. The P load is closely related to the number of floating cages in the reservoir. This evidence showed that Cirata Reservoir tended to be relatively eutrophic. In general, despite that the P load tended to fluctuate, the trophic states of Cirata Reservoir remained dynamic in relatively high conditions; showed by the oligo-mesotrophic state during its first year of operation, then increased to eutrophic and hypertrophic by the next decade. Although the P load tended to decrease, it remains in the eutrophic condition in the recent time.Niken PratiwiZULHAMSYAH IMRANINNA PUSPA AYUALIATI ISWANTARIDWI YUNI WULANDARIMBI & UNS Soloarticlecascading reservoirs, cirata reservoir, eutrophication, floating cageBiology (General)QH301-705.5ENBiodiversitas, Vol 21, Iss 9 (2020)
institution	DOAJ
collection	DOAJ
language	EN
topic	cascading reservoirs, cirata reservoir, eutrophication, floating cage Biology (General) QH301-705.5
spellingShingle	cascading reservoirs, cirata reservoir, eutrophication, floating cage Biology (General) QH301-705.5 Niken Pratiwi ZULHAMSYAH IMRAN INNA PUSPA AYU ALIATI ISWANTARI DWI YUNI WULANDARI The phosphorus load and the variation of the trophic states of Cirata Reservoir (West Java, Indonesia) from 1988 to 2017
description	Abstract. Pratiwi NTM, Imran Z, Ayu IP, Iswantari A, Wulandari DY. 2020. The phosphorus load and the variation of the trophic states of Cirata Reservoir (West Java, Indonesia) from 1988 to 2017. Biodiversitas 21: 4176-4183. Cirata Reservoir was constructed in 1987 between Saguling and Jatiluhur Reservoirs; these are the three man-made cascading lakes in West Java, Indonesia. Cirata Reservoir has been used for floating cage aquaculture activities. The high organic content from the remains of the fish pellets raised the phosphorus (P) load, resulting in the eutrophication of the reservoirs. This research was aimed to assess the P load and the variation of the trophic states of the reservoir from year 1988 to 2017. The trophic states and the nutrients’ conditions of the water were determined using Myxophycean Index. Four groups of phytoplankton were found in the reservoir during observation: Cyanophyceae, Chlorophyceae, Bacillariophyceae, and Dinophyceae. In addition, one group was found in a smaller number of observations: Eugolenophyceae. Although the community structure of the phytoplankton has changed, the Cyanophyceae was always dominant in response against the condition of nutrients, especially P. The P load is closely related to the number of floating cages in the reservoir. This evidence showed that Cirata Reservoir tended to be relatively eutrophic. In general, despite that the P load tended to fluctuate, the trophic states of Cirata Reservoir remained dynamic in relatively high conditions; showed by the oligo-mesotrophic state during its first year of operation, then increased to eutrophic and hypertrophic by the next decade. Although the P load tended to decrease, it remains in the eutrophic condition in the recent time.
format	article
author	Niken Pratiwi ZULHAMSYAH IMRAN INNA PUSPA AYU ALIATI ISWANTARI DWI YUNI WULANDARI
author_facet	Niken Pratiwi ZULHAMSYAH IMRAN INNA PUSPA AYU ALIATI ISWANTARI DWI YUNI WULANDARI
author_sort	Niken Pratiwi
title	The phosphorus load and the variation of the trophic states of Cirata Reservoir (West Java, Indonesia) from 1988 to 2017
title_short	The phosphorus load and the variation of the trophic states of Cirata Reservoir (West Java, Indonesia) from 1988 to 2017
title_full	The phosphorus load and the variation of the trophic states of Cirata Reservoir (West Java, Indonesia) from 1988 to 2017
title_fullStr	The phosphorus load and the variation of the trophic states of Cirata Reservoir (West Java, Indonesia) from 1988 to 2017
title_full_unstemmed	The phosphorus load and the variation of the trophic states of Cirata Reservoir (West Java, Indonesia) from 1988 to 2017
title_sort	phosphorus load and the variation of the trophic states of cirata reservoir (west java, indonesia) from 1988 to 2017
publisher	MBI & UNS Solo
publishDate	2020
url	https://doaj.org/article/7e868fdd78dd41b299ca4be075b849d9
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The phosphorus load and the variation of the trophic states of Cirata Reservoir (West Java, Indonesia) from 1988 to 2017

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