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All Journal Journal of Marine Research Jurnal Kelautan Tropis Jurnal Kelautan Nasional Jurnal Riset Kelautan Tropis (Journal Of Tropical Marine Research) (J-Tropimar) Zona Laut : Jurnal Inovasi Sains dan Teknologi Kelautan Jurnal Riset Kelautan Tropis (J-Tropimar) Barakuda 45 Jurnal Perikanan
Nor Sa'adah
Politeknik Bumi AKPELNI
Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Civil Engineering, Building, Construction & Architecture Control & Systems Engineering Earth & Planetary Sciences Energy Engineering Environmental Science Transportation

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Journal : Jurnal Riset Kelautan Tropis (J-Tropimar)

 1 
ANALISIS KESUBURAN PERAIRAN BERDASARKAN KELIMPAHAN FITOPLANKTON DI MUARA SUNGAI PORONG, SIDOARJO Devi Setyowardani; Nor Sa’adah; Nirmalasari Idha Wijaya
Jurnal Riset Kelautan Tropis (Journal Of Tropical Marine Research) (J-Tropimar) Vol 3 No 1 (2021): April
Publisher : Universitas Hang Tuah

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30649/jrkt.v3i1.54

Abstract

The disposal of Lapindo mud which carries nutrients and other dissolved organic matter can cause mass enrichment and death of organisms due to the reduced amount of light entering the waters. The existence of phytoplankton can provide information about the state of the waters. This study aims to determine the fertility of the waters of the Porong River through the abundance of phytoplankton. This research was conducted from October to January 2021. Sampling was carried out at three stations. The plankton sampling method was carried out horizontally and identified using the Sedgwick Rafter Counting Cell (SRCC). Nitrate and phosphate water samples used for analysis were measured by Uv-Vis Spectrophotometry. Data analysis includes phytoplankton density, diversity index, uniformity index, and dominance index. The results showed that the composition of the phytoplankton species found during the observation was dominated by diatom classes (13 genera ) and dinoflagellates (2 genera). The abundance value of phytoplankton is 122.293 – 867.776 cells/m3. The water fertility status in the Porong River Sidoarjo is in the eutrophic category, namely waters with high fertility levels.
PREVALENSI PENYAKIT PADA KARANG KERAS DI PERAIRAN KALEDUPA, TAMAN NASIONAL WAKATOBI Ainul Rahman; Nor Sa'adah; Nirmalasari I. Wijaya; Ardhi Syam Bahroun
Jurnal Riset Kelautan Tropis (Journal Of Tropical Marine Research) (J-Tropimar) Vol 3 No 2 (2021): November
Publisher : Universitas Hang Tuah

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30649/jrkt.v3i2.42

Abstract

Coral disease is a disturbance to coral health that causes physiological disturbances for coral biota. The emergence of coral disease is characterized by discoloration, damage to skeleton coral biota, to the loss of its tissueThis study aims to identify the type of coral disease and determine its prevalence in Kaledupa Waters, Wakatobi National Park, Southeast Sulawesi. This research was conducted in June 2021 in the Kaledupa Waters of Wakatobi National Park using the Belt Transect method with a size of 3 x 50 m at 3 observation points at a depth of 3-5 meters. Measurement of Oceanographic Physics-Chemistry parameters is carried out directly in the field. Identification of coral diseases was carried out descriptively based on the coral disease handbook and journal references. The results obtained found 4 types of coral disease that infect coral biota in the waters of Kaledupa Island, Wakatobi National Park, namely Black Band Disease (BBD), White Band Disease (WBD), White Pox and Ulcerative White Spot (UWS). As well as the results obtained for the overall prevalence of coral disease in the study site an average of 1.5%.
ANALISIS BAKTERI SIMBION MANGROVE AVICENNIA MARINA SEBAGAI ANTIFOULING Alifia Rizky Novitasari; Nor Sa'adah; Mahmiah
Jurnal Riset Kelautan Tropis (Journal Of Tropical Marine Research) (J-Tropimar) Vol 3 No 2 (2021): November
Publisher : Universitas Hang Tuah

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30649/jrkt.v3i2.43

Abstract

The accumulation of biofouling on a substrate causes material loss and huge economics in the maintenance of aquaculture systems, ship hulls, seawater pipelines, coastal power plants, and other marine infrastructure. Prevention of the attachment of biofouling organisms using antifouling paints that have been developed and used for a long time. Antifouling paint contains chemical compounds (biocides). The most sensitive organisms to antifouling paint are gastropods and bivalve that cause endocrine disorders, larval disorders and shell malformations. This study aims to obtain antifouling bacteria through the isolation process of bacteria obtained from the bark Avicennia marina mangrove. The method was beginning with isolation of bacteria bark of Avicennia marina mangrove, identification of bacteria, and antifouling activity test. The results obtained from isolation of bacteria, there are 9 bacteria endophytic symbionts of the inner bark and 9 epiphytic bacteria of the outer bark. The inhibition zone test of the endophytic bacteria in the bark showed that there was no antifouling activity.
Dampak Sampah Anorganik terhadap Vegetasi Mangrove Tingkat Semai di Ekosistem Mangrove Wonorejo Surabaya Sherlin Fatwa Fatmalah; Nor Sa'adah; Nirmalasari Idha Wijaya
Jurnal Riset Kelautan Tropis (Journal Of Tropical Marine Research) (J-Tropimar) Vol 4 No 2 (2022): November
Publisher : Universitas Hang Tuah

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30649/jrkt.v4i2.57

Abstract

The Wonorejo mangrove area is a mangrove forest area that has innovated into an ecotourism area, resulting in a lot of garbage found in the mangrove forest area from visitors. Inorganic waste is waste produced from non-biological materials in the form of synthetic products or the result of technological processes for managing mining materials or natural resources and cannot be decomposed by nature, for example plastic. Mangrove vegetation at the seedling level is rejuvenation from sprouts to a height of 1.5 m. The objectives of the study were to identify the density of inorganic waste in the mangrove vegetation at the seedling level, to analyze the density of the vegetation at the seedling level, to analyze the impact of inorganic waste on the growth of the vegetation at the seedling level. The method used to measure the density of mangroves and waste density using Line Plot Transects. The most waste found was 46 plastic bottles, and other inorganic waste found was styrofoam, and the density of seedlings was 2200 seedlings/ha. The relationship between waste density and seedling density showed (R²) of 0.8399 which indicated that the negative correlation was the more waste, the less seedlings. The impact caused by inorganic waste can threaten mangrove plants, especially at the seedling level and the life of the biota in the ecosystem.
Produksi dan Laju Dekomposisi Serasah Daun Mangrove di Kawasan Wisata Mangrove Gununganyar Surabaya Meisel Kristian Dui; Nirmalasari Idha Wijaya; Nor Sa'adah
Jurnal Riset Kelautan Tropis (Journal Of Tropical Marine Research) (J-Tropimar) Vol 4 No 1 (2022): April
Publisher : Universitas Hang Tuah

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30649/jrkt.v4i1.63

Abstract

Mangrove litter has a very important function for the mangrove ecosystem, including to maintain the fertility of the forest soil in question. This study aims to determine the production and rate of decomposition in the Gununganyar Mangrove Tourism Area. The study was conducted by installing a litter net or litter-trap as a container for fallen mangrove leaves, this was done to determine the productivity of mangrove leaf litter, litter collection on the litter-trap was carried out for 1 month and was taken at 30-day intervals and installed a litter-bag for placing mangrove leaf litter. The litter production at Station 1, Station 2 and Station 3 was 194.976 kg/ha/month, 681.84 kg/ha/month, 925.275 kg/ha/month. The results of the litter decomposition rate in the Gununganyar Mangrove Tourism Area from Station 1, Station 2, and Station 3 were 97.95%, 60.35% and 89.25%, respectively.
Kelimpahan Ikan Clownfish (Amphiprioninae Ocellaris) Sebagai Bioindikator Kondisi Karang Di Gili Labak, Madura Yunita Vernandha; Nirmalasari Idha Wijaya; Nor Sa'adah
Jurnal Riset Kelautan Tropis (Journal Of Tropical Marine Research) (J-Tropimar) Vol 4 No 1 (2022): April
Publisher : Universitas Hang Tuah

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30649/jrkt.v4i1.65

Abstract

  Coral reefs are a habitat for more than 300 types of coral, 200 species of fish, and various other invertebrates such as molluscs, crustaceans, sponges, algae, and other biotas. Sea anemones are sea animals from the Anthozoa taxonomic class, which are flower-shaped. Clownfish have an attractiveness with its the color which has a basic color pattern with a combination: red - white, red - black and black - yellow - white. The purpose of this research is to analyze the condition of the corals and the abundance of clownfish on Gili Labak Island, Sumenep. This research was conducted in October 2021 on Gili Labak Island, Sumenep. The method used to collect data on the condition of coral reefs is using a belt transect with a length of 50 m parallel to the shoreline to collect data on the abundance of clownfish using the UVC (underwater visual census) method and to collect data on brightness, salinity, temperature and current velocity using in situ data (direct). The results obtained from this research is the relationship between coral reef conditions and clownfish, namely a positive correlation with a coefficient of determination (R²) = 0.8048. The relationship between coral reef conditions and sea anemone abundance is a negative correlation with the coefficient of determination (R²) = 0.2049.
Identifikasi Jenis-Jenis Mangrove Di Pantai Ya’ang, Desa Labuhan, Kecamatan Brondong, Kabupaten Lamongan Raka; Nor Sa’adah; Perdana Ixbal Spanton M; Amir Yarkhasy Yuliardi
Jurnal Riset Kelautan Tropis (Journal Of Tropical Marine Research) (J-Tropimar) Vol 5 No 1 (2023): April
Publisher : Universitas Hang Tuah

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30649/jrkt.v5i1.58

Abstract

Brondong District, Lamongan Regency has many types of mangroves in the coastal area and has a coastline reaching 47 km, Lamongan Regency and a mangrove forest area of around 53.37 Ha.This research aims to determine the types and characteristics of mangroves. The method used is explorative survey.The results of the study showed that Brodong District, Lamongan Regency had various types of mangroves as many as 6 types of mangroves consisting of Avicennia marina, Avicennia alba, Rhizophora mucronata Rhizophora stylosa, Bruguiera gymnorrhiza and Sonneratia alba.
Co-Authors Ainul Rahman Alifia Rizky Novitasari Alifia Rizky Novitasari Alifia Rizky Novitasari Amir Yarkhasy Yuliardi Ardhi Syam Bahroun Devi Setyowardani Engki Andri Kisnarti Fachrani Vebranti Millenia Hermalita Azkiyah Sakhi Heronima Natalia Sunur Ika Pibria Ningrum Mahmiah Maisaroh, Dian Sari Meisel Kristian Dui Misbakhul Munir Nani Wijayanti Nirmalasari I. Wijaya Nirmalasari Idha Wijaya Rafid Gifa Muhammad Raka Sapto Andriyono Sekar Widyaningsih Sherlin Fatwa Fatmalah Spanton, Perdana Ixbal Syamsul Arifin Urip Prayogi Woro Hastuti Satyantini Yahya Abdillah Al Hanif Yunita Vernandha