Fertility Evaluation of Coral Reef Ecosystems Using Bioindicators of Phytoplankton in Watu Lawang Waters, Pasir Putih Beach, Situbondo - Indonesia

Journal of Marine Resources and Coastal Management Pub Date : 2020-08-03 DOI:10.29080/mrcm.v1i1.755

M. Ma’arif, M. Munir, R. Akhwady

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Abstract

The level of waters fertility is closely relate to the abundance and composition of plankton. Phytoplankton is a biological parameter that can be used as an indicator of the fertility of a waters. The purpose of this study was to determined the community structure of phytoplankton and the level of fertility in the waters of Pasir Putih beach, Situbondo. The study was conducted at five stasions in Watu Lawang waters, Pasir Putih Beach, Situbondo. The Sampling used purposive sampling method. Seawater samples were filtered on the surface of each station using plankton net number 25. Then, water samples were identified in the Microbiology Laboratory of UIN Sunan Ampel Surabaya. The results of identification of phytoplankton in the waters of Watu Lawang, Pasir Putih Beach, Situbondo obtained 4 classes that consisted of Bacillariophyceae, Cyanophyceae, Chlorophyceae, and Dinophyceae family. The phytoplankton composition found during the study was dominated by the Bacillariophyceae class. The genus Bacteriastrum sp and Chaetoceros sp were found in all observation stations. The highest phytoplankton abundance was at station IV with an abundance of 1670 cells L-1. And the lowest abundance of phytoplankton was at station I with an abundance value of 730 cells L-1. The diversity of phytoplankton was categorized in the low diversity level (H’<2.3). The Uniformity index value was classified as unstable (0

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利用浮游植物生物指标评价印尼斯图邦多Pasir Putih海滩Watu Lawang水域珊瑚礁生态系统肥力

水体的肥力水平与浮游生物的丰度和组成密切相关。浮游植物是一种生物参数，可作为水体肥力的指标。本研究的目的是确定西斯邦多Pasir Putih海滩水域浮游植物的群落结构和繁殖力水平。这项研究在Watu Lawang水域、Pasir Putih海滩、斯图邦多的五个站点进行。抽样采用目的性抽样方法。采用浮游生物网号25在各监测站表面过滤海水样本。水样在泗水大学苏南分校微生物实验室进行鉴定。对巴西普提斯海滩Watu Lawang海域的浮游植物进行了鉴定，鉴定结果为硅藻科、蓝藻科、绿藻科和dinophyceia科4个纲。研究中发现的浮游植物组成以硅藻纲为主。所有观测站均发现有细菌属和毛囊属。浮游植物丰度最高的是IV站，丰度为1670个细胞L-1。浮游植物丰度最低的是1站，丰度值为730 cells L-1。浮游植物多样性处于低多样性水平(H <2.3)。均匀性指标值为不稳定(0

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Journal of Marine Resources and Coastal Management

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