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DISTRIBUSI KELIMPAHAN DAN KEANEKARAGAMAN ZOOPLANKTON DI PERAIRAN PESISIR YAPEN TIMUR, PAPUA Paiki, Kalvin; Kalor, John D; Indrayani, Ervina; Dimara, Lisiard
Maspari Journal : Marine Science Research Vol 10, No 2 (2018): Edisi Juli
Publisher : UNIVERSITAS SRIWIJAYA

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36706/maspari.v10i2.5953

Abstract

Perairan Pesisir Yapen Timur merupakan tipe perairan terbuka, berhubungan dengan samudera Pasifik, memiliki tingkat keanekaragaman zooplankton yang sangat tinggi dan terletak di Pesisir Utara Papua. Tujuan penelitian ini adalah untuk mengetahui distribusi kelimpahan dan keanekaragaman zooplankton di Perairan Pesisir Yapen Timur. Metode yang digunakan adalah metode deskriptif dengan menggunakan pendekatan studi kasus. Hasil ditemukan komposisi zooplankton terdiri 6 kelas dan 34 spesies, tertinggi ditemukan oleh Crustaceae yaitu 28 spesies, dan terendah ditemukan oleh Ubur-ubur Rotifers, Dictyocysta, Polyhymenophorea dan Monogononta yaitu 1 spesies.  Kelimpahan zooplankton 856.689 ind/m³, kelimpahan tertinggi di titik 11 yaitu 82,166 ind/m³ dan terendah di titik 8 yaitu 31,210 ind/m³. Rata-rata keanekaragaman tergologn tinggi yaitu 3,35, keseragaman tergolong merata yaitu 0,88 dan dominansi tergolong rendah yaitu 0,05.
Status Kesehatan dan Uji Spesies Indikator Biologi Ekosistem Mangrove Teluk Yotefa Jayapura Kalor, John Dominggus; Dimara, Lisiard; Swabra, Ottouw G.; Paiki, Kalvin
Majalah Ilmiah Biologi BIOSFERA: A Scientific Journal Vol 35, No 1 (2018)
Publisher : Fakultas Biologi | Universitas Jenderal Soedirman

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20884/1.mib.2018.35.1.495

Abstract

This research was conducted to test the mangrove crab of Sesarmidae family as bio-indicator to assess health status of mangrove ecosystem in Youtefa Bay of Jayapura. Conducted since March-August 2017. Conducted in 3 stations namely St. Enggros, St.Tobati, and St. Nafri. Using the quadratic transect method (1x 1 m) and the quadratic transect (10 x 10 m). Data were analyzed using index of diversity, dominance, evenness, abundance, density, simple linear regression and test criteria of indicator species. The result of the research found the level of mangrove diversity in Enggros Station with the value of index 1.9 then Tobati and Nafri Station of 1, 4 with abundant diversity level. The density of mangroves in the three stations is obtained by Enggors: 1455.6 trees / Ha, Naftri: 1477.8 trees / Ha, and Tobati 1033,5 trees / ha with moderate density categories and good ecosystem health conditions. The biological criteria indicator test shows that the Sesarmidae crab meets the six criteria of the indicator species, so that it can be designated as a species indicator of the health status of the ecosystem.
NITRATE AND PHOSPHATE DISTRIBUTION RELATED TO FITOPLANKTON ABUNDANCE IN EAST YAPEN COASTAL WATER Kalor, John Dominggus; Paiki, Kalvin
JFMR-Journal of Fisheries and Marine Research Vol 1, No 2 (2017)
Publisher : JFMR-Journal of Fisheries and Marine Research

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (263.934 KB) | DOI: 10.21776/ub.jfmr.2017.001.02.3

Abstract

The waters of Yapen Timur in Yapen Islands, Papua are semi-open waters with high potential natural resources. Recent research on chemical and biological parameters more specifically of nutrient concentration and phytoplankton abundance is still very limited. The study aimed to observe the concentration of nutrients (nitrates and phosphates), and their relation with the abundance of phytoplankton in Yapen Timur waters, was conducted on January 5Th to February 5th, 2016. Using explorative method and purposive sampling method, with 15 sampling points. Data analysis using Spectrophotometer at wavelength 545 nm for nitrate and 885 nm, whereas for phytoplankton abundance use APHA equation. Spatial distribution of nitrate, phosphate and phytoplankton abundance using kriging-method equation and Software Ermaper 7.0. Nitrate concentrations were found to be between 0.2 mg - 0.7 mg / l, phosphates ranging from 0.2 to 0.6 mg / l and the abundance of phytoplankton ranged from 49,682 to 139,490 ind / l. The correlation coefficient analysis indicates the relationship between nitrite and phytoplankton of 0.3947, phosphate and phytoplankton of. 0.0068. The concentration of nitrate and phosphate at the observation site indicated that the water quality belongs to the oligotrophic waters, the abundance of phytoplankton is high and there is no blooming in certain species, and the relationship between the nitrate and phosphate concentration is positively correlated with the abundance of phytoplankton at the observation site.