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All Journal Jurnal Ilmu dan Teknologi Kelautan Tropis Maspari Journal Majalah Ilmiah Biologi BIOSFERA: A Scientific Journal
Hikmah Thoha
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Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Decision Sciences, Operations Research & Management Environmental Science Immunology & microbiology Library & Information Science

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THE ABUNDANCE AND SPATIAL DISTRIBUTION OF PLANKTON COMMUNITIES IN BANGGAI ISLANDS WATERS Hikmah Thoha; Arief Rachman
Jurnal Ilmu dan Teknologi Kelautan Tropis Vol. 5 No. 1 (2013): Elektronik Jurnal Ilmu dan Teknologi Kelautan Tropis
Publisher : Department of Marine Science and Technology, Faculty of Fisheries and Marine Science, IPB University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (413.325 KB) | DOI: 10.29244/jitkt.v5i1.7761

Abstract

Banggai Islands waters are mixing area between Banda Sea and Makassar Sea, thus resulting in the existence of many unique marine ecosystems. This conditon might also lead to the occurrence of unique and specific plankton community in the oceanic ecosystem of Banggai Islands. This research was conducted in 26 June to 8 July using Baruna VIII research vessel. Phytoplankton and zooplankton samples were collected in 14 stations using Kitahara and NORPAC plankton net. The plankton data in this research was analyzed with Bray-Curtis Clustering Analysis (Single Link), linear regression and Pearson correlation matrix. The results showed that zooplankton abundance was highest at the strait between Liang and Labobo Island, while phytoplankton was found abundant at eastern Tinangkung Island. On the other hand, Mesamat Bay was found having very low abundance of zooplankton and phytoplankton, which probably related to low nutrient availability in the water column. Calanoids, cyclopoids, and oikopleurans were dominant taxa with widest spatial distribution and highest importance value in zooplankton community of Banggai Islands. Meanwhile Chaetoceros, Rhizosolenia and Thalassiothrix were the dominant genus with widest spatial distribution and highest importance value in phytoplankton community. The result of clustering analysis showed that there were three stations with unique plankton community, and was found very different from the planktonic community in other stations. It was interesting to note that bottom-up control by nutrient availabilty, and top-down control by predator-prey interaction, probably not the main factor responsible for the unique pattern of plankton community structure of Banggai Islands. Keywords: plankton community, Banggai islands waters, Bray-Curtis clustering analysis, biological indices.
Hubungan Kandungan Klorofil-A dan Kelimpahan Fitoplankton di Perairan Berau Kalimantan Timur Riris Aryawati; Hikmah Thoha
Maspari Journal : Marine Science Research Vol 2, No 1 (2011): Edisi Januari
Publisher : UNIVERSITAS SRIWIJAYA

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (517.093 KB) | DOI: 10.36706/maspari.v2i1.1292

Abstract

Phytoplankton is the most important primary producers in all marine invironments. Primary production, a term interchangeable with photosynthesis, is the biological process of creating high-energy organic material from CO2, H2O, and other nutrients using solar energy. The aim of the research was to know the relationship of   abundance of phytoplankton and chlorophyl-a in Berau waters, East Kalimantan. The result of physical-chemical water measurement are generally inaccordance for phytoplankton living purposes. The number of phytoplankton genera found during research was 28 genera which consist of 24 kinds Bacillariophyceae and 4 kinds Dinophyceae. Community structure was dominated by the group of diatoms such as Chaetoceros, Dytilum, Thalassiothrix. Abundance of phytoplankton influences of content klorofil-a, although not too big.   Keywords: chlorophyl-a, abundance, phytoplankton, Berau waters ABSTRAK   Fitoplankton merupakan produsen primer terpenting di lingkungan laut,  karena fitoplankton mampu berfotosintesis. Fotosintesis adalah suatu proses yang kompleks, dimana sinar matahari diserap oleh sel-sel fitoplankton dan diubah menjadi energi biologi kemudian disimpan dalam bentuk senyawa organik. Tujuan dari penelitian ini adalah mengetahui hubungan antara kandungan klorofil-a dengan kelimpahan fitoplankton di perairan pesisir Berau, Kalimantan Timur. Penelitian ini dilaksanakan pada bulan September 2005. Sampel air laut diambil dengan botol Nansen lalu dimasukkan dalam botol sampel untuk selanjutnya disimpan dalam kotak pendingin  untuk dianalisis kandungan klorofil-a, fosfat, dan nitrat. Pada saat pengambilan sampel juga dilakukan pengukuran parameter oseanografi seperti suhu, salinitas, arah dan kecepatan arus. Sampel fitoplankton diambil dengan menggunakan jaring kitahara yang berbentuk kerucut dengan diameter 31 cm dan mata jaring 80 μm. Untuk mengetahui hubungan antara kandungan klorofil-a dengan kelimpahan fitoplankton digunakan analisis regresi korelasi. Hasil penelitian menunjukkan bahwa fitoplankton yang ditemukan terdiri dari 28 genera yang termasuk dalam dua klas, yaitu Bacillariophyceae (24 genera) dan Dynophyceae (4 genera). Bacillariophyceae mempunyai    jumlah  terbesar, baik dari segi jumlah generanya maupun jumlah individu tiap generanya. Genera fitoplankton yang dijumpai dalam jumlah melimpah (>10%) adalah Chaetoceros, Dytilum, dan Thalassiothrix. Kelimpahan fitoplankton mempengaruhi besarnya kandungan klorofil-a, walaupun tidak terlalu besar.   Kata kunci: klorofil-a, kelimpahan, fitoplankton, perairan Berau
The Diversity of Plankton in Sangihe – Sangir Talaud Islands, Sulawesi, Indonesia Hikmah Thoha; Nurul Fitriya
Majalah Ilmiah Biologi BIOSFERA: A Scientific Journal Vol 27, No 3 (2010)
Publisher : Fakultas Biologi | Universitas Jenderal Soedirman

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20884/1.mib.2010.27.3.200

Abstract

The research of Oceanographical Expedition was conducted on May 2009. Research Vessel of Baruna Jaya VIII was used to accommodate the research team, which is a part of the EWIN ( Widya Nusantara Expedition) project with a topic of discovering the ultimate frontier of Indonesia and strengthening our national resilience, such as survival, energy, and natural resources, food, disaster, and health. This paper shows  plankton research with environment studies, such as temperature and salinity.  Plankton was sampled using Kitahara Net with mesh size of 80 µm for phytoplankton and Norpac Plankton Net with mesh size of 300 µm for zooplankton. The sample was poured into a bottle with formalin of 4% as preservative from 13 stations. The results showed that the phytoplanktons consist of 22 diatom genera and 10 dinoflagellates. The phytoplankton abundance was due the flourishing of Chaetoceros sp., Rhizosolenia sp., Nitzschia sp., and Thalassiothrix sp.   Ceratium sp. and Protoperidinium sp., Pyrocystis sp., and Cyanobacteria Trichodesmium sp. were common among the dinoflagellates. The zooplanktons consist of 30 taxa, the group of which are mostly composed of Copepoda, Calanoida, Cyclopoida, Oikopleura, and Chaetognata. Environmental  studies were also discussed.    
Co-Authors Arief Rachman Nurul Fitriya Riris Aryawati