The abundance and spatial distribution of plankton communities in Perancak Estuary, Bali

2nd International Conference on Marine Science: Better Insight for the Healthy Ocean

Hastuti, A.W.^1 ; Pancawati, Y.^2 ; Surana, I.N.^1

Institute for Marine Research and Observation - Perancak, Jembrana, Bali

82251, Indonesia^1

Fish Quarantine and Inspection Agency, Juanda, Surabaya, Indonesia^2

关键词: Ecological indices;    Field surveys;    Filtered samples;    Local community;    Mesh size;    Plankton communities;    Plankton sampling;    Water samples;   

Others  :  https://iopscience.iop.org/article/10.1088/1755-1315/176/1/012042/pdf
DOI  :  10.1088/1755-1315/176/1/012042

来源: IOP

【 摘 要 】

Perancak estuary is a productive ecosystem and has important role in the balance of nature and the life of local communities. However, research about water quality and organisms in Perancak estuary is still low, especially on plankton abundance and distribution. The aim of this research was to analyze the abundance and spatial distribution of plankton communities. The research was conducted by field surveys in November 2015, samples were taken from 3 stations representing upstream (S1), stream (S2) and downstream (S3). Plankton sampling was carried out by filtering water samples as much as 100 liters of plankton net with mesh size 25μm, diameter 31 cm, and length 80 cm. Filtered samples were stored in the sample bottle and the preserved with 1 ml of 4% formaldehyde. The result showed, an abundance of phytoplankton ranged between 33,600 - 3,002,400 cell/m3 and zooplankton between 6,000-57,000 ind/m3. Total of 6 genera of phytoplankton and 14 genera of zooplankton was recorded during the research period. The ecological index showed that species diversity of plankton in Perancak estuary was categorized as low diversity. Plankton abundance in S1 which located in Loloan River is higher than others. Its caused by anthropogenic waste from agriculture, households and industrial waste.