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All Journal Jurnal Ilmu dan Teknologi Kelautan Tropis Maspari Journal OLDI (Oseanologi dan Limnologi di Indonesia) Majalah Ilmiah Biologi BIOSFERA: A Scientific Journal Marine Research in Indonesia
Nurul Fitriya
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Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Decision Sciences, Operations Research & Management Earth & Planetary Sciences Environmental Science Library & Information Science

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Effects of Nutrients Concentration on Phytoplankton Abundance in The Halmahera-Molucca Sea Meirinawati, Hanny; Fitriya, Nurul
Oseanologi dan Limnologi di Indonesia Vol 3, No 3 (2018)
Publisher : Indonesian Institute of Sciences

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (317.953 KB) | DOI: 10.14203/oldi.2018.v3i3.129

Abstract

The availability of nutrients in the ocean is essential for the growth and accumulation of phytoplankton biomass. The input nutrients can then changes its ratio which may affect the species composition of phytoplankton communities and higher trophic level biotas. The effects of nutrients on phytoplankton abundance are very important to be studied due to its role as limiting factors for phytoplankton growth. Besides that, these two variables are most important factors in measuring aquatic productivity. This study aims to analyzed composition and abundance of phytoplankton and its relationship with dissolved inorganic nutrients in the Halmahera-Molucca Sea. This research was conducted in November 2015 covering 8 sampling station within the Halmahera-Molucca Sea. Water quality parameters, such as pH was measured using potentiometic method, dissolved oxygen (DO was measured using titrimetric method), and nitrate, nitrite, ammonium, phosphate and silicate, were measured using the colorimetric method. The water samples were taken using Rosette sampler and then filtered using hand net plankton with size 20 μm to obtain the phytoplankton. Plankton composition and abundance were then determined by microscopic analysis. The result showed that ammonium positively correlated with phytoplankton abundance (r=0.9133 at p<0.01). The correlation between nutrients and phytoplankton show that each genus has a preference for different nutrients. The presence of ammonium significantly increase the phytoplankton abundance from genus Chaetoceros, Nitzchia, Climacodium, Ceratium, Eucampia, Lauderia, Protoperidinium, and Rhizosolenia. On the other hand, phosphates increase the phytoplankton abundance from genus Coscinodiscus although not significantly. Besides, silicates increase the phytoplankton abundance from genus Thalassiothrix, Bacteriastrum, Skletonema, and Hemiaulus while nitrates increase the phytoplankton abundance from genus Alexandrium
PUBLIC AWARENESS ON HARMFUL ALGAL BLOOM (HAB) IN LAMPUNG BAY Aditya, Vishnu; Koswara, Asep; Fitriya, Nurul; Rachman, Arief; Sidabutar, Tumpak; Thoha, Hikmah
Marine Research in Indonesia Vol 38 No 2 (2013)
Publisher : Research Center for Oceanography - Indonesian Institute of Sciences (LIPI)

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (926.212 KB) | DOI: 10.14203/mri.v38i2.58

Abstract

Harmful algal blooms (HABs) cause various problems, such as water quality degradation, fauna mass mortality and impairment of human health. Water quality monitoring in Lampung Bay has been conducted by Lampung Marine Aquaculture Office (BBL) of the Ministry of Marine Affairs and Fisheries since 1994. Occurrence of Pyrodinium bahamense var. compressum (Pbc), a causative organism of paralytic shellfish poisoning (PSP), has been recorded but threats caused by HABs have never been reported. A study aimed to know the level of public knowledge and awareness about HABs in Lampung Bay has been conducted. The components of group respondents consisted oflocal governments, academics and coastal communities. Awareness from each component was examined includinggeneral HAB knowledge, HAB impact to the community, HAB occurence and local knowledge of HAB. Data of HAB knowledge were collected through questionnaire and focus group  discussion. The result showed that 40.5% of respondents had knowledge of HABs phenomena and 51.3% respondents only know signs or indicators of HAB occurrence, while only 1.4% respondents had knowledge of local HAB occurences. The direct impact of HABs to the community was not commonly known by the respondents. Only a few cases of poisoning after eating seafood were reported. It can be concluded that there was lack of public knowledge and awareness on HABs in LampungBay. Intensive public awareness programs about HABs should be conducted in order to reduce risk towards HABs in Lampung Bay.
Pola Sebaran Fitoplankton serta Klorofil-a pada Bulan November di Perairan Tambelan, Laut Natuna Fitriya, Nurul; Surbakti, Heron; Aryawati, Riris
Maspari Journal : Marine Science Research Vol 3, No 2 (2011): Edisi Juli
Publisher : UNIVERSITAS SRIWIJAYA

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (389.596 KB) | DOI: 10.36706/maspari.v3i2.1307

Abstract

Phytoplankton is one of the parameters that determine the primary productivity in the sea. Distribution and abundance of phytoplankton is influenced by physical and chemical aspects of sea water. The purpose of this study is to analyze the abundance of plankton and chlorophyll-a. The research was conducted in November 2010 in the Tambelan Waters, Natuna. 24 species of phytoplankton were found. It was dominated by the group of Bacillariophyceae such as Bacteriastrum, Ditylum, Thalassiothrix, Hemiaulus, Nitzshia, Chaetoceros and Skeletonema. While the group of dinoflagellate species found are common and many of Ceratium. The content of chlorophyll-a showed that the range of chlorophyll-a in the Tambelan waters ranged between 1.71 - 4:08 mg/m3 (in the surface layer) and 0.92 - 5:39 mg/m3 (in the layer near the bottom). This condition indicates that the research are greatly influenced by the activity of the mainland. These results are also evident from the high concentrations of chlorophyll-a in the waters near the mainland compared to offshore areas, this confirms that the distribution of chlorophyll-a concentrations in waters strongly influenced by high nutrient inputs from activities in the surrounding land.   Key Words: Chlorophyll-a, phytoplankton, Tambelan   ABSTRAK Fitoplankton merupakan salah satu parameter yang sangat menentukan produktivitas primer di laut. Sebaran dan tinggi rendahnya konsentrasi fitoplankton sangat terkait dengan kondisi oseanografi suatu perairan. Tujuan penelitian ini adalah menganalisis tingkat kesuburan perairan berdasarkan kelimpahan plankton dan klorofil a-fitoplankton sebagai produsen primer di wilayah kepulauan Tambelan. Penelitian ini dilaksanakan pada bulan November 2010 di sekitar perairan Kepulauan Tambelan, Natuna.  Hasil penelitian menunjukkan bahwa di perairan Tambelan, ditemukan 24 jenis fitoplankton. Lima jenis diatom umum dijumpai di perairan ini, yaitu Bacteriastrum, Ditylum, Thalassiothrix, Hemiaulus, Nitzshia, Chaetoceros dan Skeletonema. Sedangkan dari kelompok dinoflagellata jenis yang umum dan banyak ditemukan adalah Ceratium. Kandungan klorofil-a menunjukkan bahwa kisaran klorofil-a di lapisan permukaan di sekitar perairan Tambelan berkisar antara 1.71 – 4.08 mg/m3.  Konsentrasi klorofil-a pada lapisan dekat dasar di Perairan Tambelan berkisar antara 0.92 – 5.39 mg/m3.  Kondisi ini menandakan bahwa lokasi penelitian di sekitar kedua pulau tersebut sangat dipengaruhi oleh aktivitas dari daratan.  Hasil ini juga terlihat dari tingginya konsentrasi klorofil-a di perairan dekat daratan jika dibandingkan dengan daerah lepas pantai, ini menegaskan bahwa sebaran konsentrasi klorofil-a yang berada di perairan sangat dipengaruhi oleh masukan nutrien yang tinggi dari aktivitas di daratan sekitarnya.   Kata Kunci: Klorofil-a, fitoplankton, Tambelan
ZOOPLANKTON COMMUNITY IN LAMALERA SEA AND SAWU SEA, EAST NUSA TENGGARA Nurul Fitriya; Muhammad Lukman
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 (182.161 KB) | DOI: 10.29244/jitkt.v5i1.7770

Abstract

Zooplankton community was studied in Lamalera Sea and Sawu Sea during DIKTI-P2O LIPI Expedition from 19 – 30 July 2011. Besides being a potential fishing ground, the Lamalera sea and Sawu Sea have been a migration path for Cetacean (large marine mammals), particularly during the southeast monsoon season. The purposes of this study were to investigate community structure, abundance, and spatial distribution of zooplankton in the Lamalera Sea and the Sawu Sea.  Plankton samples were collected from 23 stations, by NORPAC 300 µm-net that was vertically hauled from maximum 200 meter depth up to the surface water. The result showed that there were 45 taxa of zooplankton, which was dominated by copepods . The abundance of the zooplankton between 491 - 4537 individu/m3. Average diversity index and evenness values were 1.59 ± 0.21 and 0.50 ± 0.04, respectively. In this area, Creel has been found in all research stations but the abundance was small. Species composition was relatively the same between sampling stations suggesting that there was no different in composition between north and south parts, which virtually comprise of different water masses. It showed that spatial distribution of zooplankton was relatively  wide-reaching. Keywords: zooplankton, copepoda, creel, Lamalera sea, and Sawu Sea.
POTENTIAL ROLES OF BIOTIC FACTORS IN REGULATING ZOOPLANKTON COMMUNITY DYNAMICS IN JAKARTA BAY SHALLOW WATER COASTAL ECOSYSTEM Arief Rachman; Nurul Fitriya
Jurnal Ilmu dan Teknologi Kelautan Tropis Vol. 4 No. 1 (2012): 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 (608.022 KB) | DOI: 10.29244/jitkt.v4i1.7802

Abstract

The dynamics in zooplankton abundance were regulated by changes in water physical-chemical parameters and interaction with biotic factors. In this research we examined the relationship between zooplankton community dynamic and important biotic factors, such as predation and food availability, in Jakarta bay. Plankton samplings were done in 10 sampling stations in Jakarta bay, from July to November 2009. Zooplankton samples were collected using horizontal towing method with NORPAC plankton net (mesh size 300 μm). Salinity, water depth, water temperature, and water transparency were measured. Phytoplankton samples were also collected with the same method as zooplankton, using Kitahara plankton net (mesh size 80 μm). Zooplankton taxas were grouped into two groups, the prey and predatory zooplankton. The results showed that there were two different patterns in zooplankton groups dynamic i.e., the single and double peak. The abundance peak in most zooplankton groups, such as copepods, cirripeds, luciferids, and tunicates, were induced by the high food availability during the phytoplankton bloom in August. The high abundance of prey zooplankton groups in August was responded by the predatory zooplankton groups, resulting in high abundance of predatory zooplankton in adjacent month. The high abundance of ctenophores and chordates (fish larvae) were suggested as the main factor for the low abundance of other zooplankton in September. Physical and chemical factors were not the regulating factors due to the stability of those factors during this research period. Thus we concluded that food availability and predator-prey interaction were the main factors which regulate zooplankton community dynamics in Jakarta bay.Keywords: predator-prey interaction, zooplankton, abundance peak, food availability, phytoplankton bloom
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 Aditya, Vishnu Arief Rachman Arief Rachman Heron Surbakti Hikmah Thoha Hikmah Thoha Koswara, Asep Meirinawati, Hanny Rilus Kinseng Riris Aryawati Tumpak Sidabutar