Sisca Elviana
Jurusan Manajemen Sumberdaya Perairan, Fakultas Pertanian, Unmus

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KANDUNGAN FOSFAT DAN NITRAT KAITANNYA DENGAN KEBERADAAN GASTROPODA PADA EKOSISTEM MANGROVE DI PERAIRAN KAMBAPI, KABUPATEN MERAUKE Sisca Elviana; Nova Suryawati Monika
Musamus Fisheries and Marine Journal Volume 1 Number 2, April 2019
Publisher : Faculty of Agriculture Musamus University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35724/mfmj.v1i1.1630

Abstract

Mangrove ecosystem is inhabited by a variety of biota, one of the fauna inhabitants of the original mangrove area isgastropods. It is the quality of the waters which certainly has a direct impact on aquatic biota. Nitrate and phosphateare needed by gastropods because they are related to nutrient availability. The purpose of this study is to determinethe phosphate and nitrate contents and analyze the relationship between phosphate and nitrate contents and thepresence of gastropods in the mangrove ecosystem at the Kambapi Beach, Merauke. Data analysis used ecologicaldata of abundance, diversity, dominance and PCA. The results showed that phosphate contents ranged from 0.002-0.04 mg / l and nitrate ranged from 0.007 to 0.19 mg / l, whereas in sediment phosphate contents ranged from 9.63-19.32 mg / l and nitrates ranged from 0.89-4.55mg / l. The results of the analysis of the relationship between thepresence of gastropods and phosphate and nitrate indicates that the parameters of phosphate and nitrate in sedimentsand phosphates in waters have a positive value which means that these parameters affect the presence of gastropoddensity while the environment parameters which correlate negatively is nitrate in the water. This shows that thenitrate contents in water have an inverse relationship with gastropod density.Keywords: Gastropod, Merauke, Phosphate, Nitrate
KEBIASAAN MAKAN MUDSKIPPER Boleophthalmus pectinirostris (Linnaeus, 1758) DI MUARA SUNGAI MARO KABUPATEN MERAUKE, PAPUA Sunarni Sunarni; Sisca Elviana
Musamus Fisheries and Marine Journal Volume 1 Number 2, April 2019
Publisher : Faculty of Agriculture Musamus University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35724/mfmj.v1i1.1631

Abstract

Food is one of the most important factors for fish. Food determines the extent of spread a types and can controlthe size of a population. Informations about feeding habits from mudskipper (B. Pectinirostris) is still verylimited, especially in the mouth of the Maro estuary, Merauke district, Papua. The purpose of this study is toexamine the feeding habits of mudskipper (B. Pectinirostris). Based on the analysis of Mudskipper's (B.pectinirostris) feeding habits which were found during the study consisted of 2 food types, namelyphytoplankton and mollusca. The main types of food Mudskipper (B. pectinirostris) is Rhizosolenia Hebetatafrom the Phytoplankton. Keywords: Mudskipper; Feeding habits; Maro Estuary