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Ima Nurmalia Permatasari
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Gedung F4 Fakultas Teknik dan Ilmu Kelautan - Jl. Arief Rahman Hakim No.150, Keputih, Kec. Sukolilo, Kota SBY, Jawa Timur 60111.
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Jurnal Riset Kelautan Tropis (J-Tropimar)
Published by Universitas Hang Tuah
ISSN : 26567091     EISSN : 26563150     DOI : https://doi.org/10.30649/jrkt.v3i2
Core Subject : Science,
Biochemistry, Genetics & Molecular Biology Earth & Planetary Sciences Energy
1. Oseanografi Fisika 2. Oseanografi Geologi 3. Kimia Laut dan Biologi Laut 4. Ekologi dan Pencemaran Laut 5. Bioteknologi Kelautan 6. Penginderaan Jauh Kelautan 7. Sistem Informasi Geografik Kelautan 8. Hidrografi 9. Meteorologi Laut 10. Akustik Kelautan 11. Pengelolaan sumberdaya pesisir dan laut.
Arjuna Subject : Ilmu Bumi dan Planet (semua kategori) - Oseanografi
Articles 70 Documents
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Fenomena Upwelling di Perairan Spermonde Sulawesi Selatan Dyan Viegas Wibisono; Supriyatno Widagdo; Viv Djanat Prasita
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.v4i2.54

Abstract

Spermonde waters are waters that surround the Spermonde islands with shallows located in the southwest of South Sulawesi which is in the tropics and crossed by the equator which causes these waters to experience two different seasons, namely the west and east monsoons. The purpose of this study was to analyze the upwelling phenomenon in spermonde waters. Spermonde waters in the east monsoon (June-August) have the potential for upwelling because they have strong winds and currents so that there is an Ekman transport that causes the deflection of the current to move from southeast to west. Indications of upwelling can be seen from the increase in the temperature and salinity of the water mass from the inside that occurs at all stations so that it is strong for upwelling to occur. The pattern of chlorophyll-a concentrations in the Mediterranean and upwelling seas that occur is weak because the highest chlorophyll is near the coast due to the influence of river water and several other industrial activities so that off shore area shaven ottoo high chlorophyll whichis associated with adecrease in sea surface temperature.
Estimasi Karbon Organik Sedimen di Ekosistem Mangrove Gunung Anyar, Surabaya Ramanda Reza Aldiano; Nirmalasari Idha Wijaya; Mahmiah
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.v4i2.55

Abstract

Mangroves are plants that can live in salty waters and areas tidal. Sediments store more than 50% of the carbon contained in the coastal ecosystem. This study aims to calculate the value of the content of carbon and soil density values. This research uses purposive sampling to determine the location and the LOI (loss on ignition) method to find out carbon content. Station 1 is located at Ecowista Mangrove, Station 2 is at ponds, and Station 3 on the coast. Sediment organic carbon percentage value Soil is obtained from the process of ashing soil organic matter. Average value the highest percentage of soil organic carbon content at all stations is located at a depth of 60- 100 cm, which is equal to station 1 (14.38%) and the estimated carbon The highest organic matter is located at station 1 at a depth of 60-100 cm (95,151 Mg/ha), for the highest overall organic carbon estimation is located at station 3 (252,900 Mg/ha). From the results obtained for the value of mangrove density and production Mangrove litter can be said to have a mutual influence on the carbon value organic sediment at a depth of 0-30 cm.
Estimasi Cadangan Karbon dan Serapan Karbondioksida Biomassa Tegakan Mangrove di Gunung Anyar, Surabaya Dandy Aditya Permana; Nirmalasari Idha Wijaya; Mahmiah
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.v4i2.56

Abstract

Mangrove forests are forests that are able to store carbon and absorb carbon dioxide with the best ability compared to other forests. This study aims to analyze the condition of the mangrove forest and to analyze the estimation of carbon stock and carbon dioxide uptake from tree stands and saplings in the Gunung Anyar mangrove forest. The main data needed in this research is the number of individuals and the amount of biomass of mangrove stands. The research method used is the survey method. Determination of the location and sampling technique was carried out by purposive sampling with 3 transect lines (Transect Line Plot). Estimation of carbon stock and carbon dioxide uptake was done by non-destructive method and allometric equation approach. The condition of the Gunung Anyar mangrove forest for tree stands was damaged, while the saplings were good, the dominant type of mangrove was Avicennia marina. The estimated carbon stocks of tree stands and saplings were 38.67 tons C/ha and 9.26 tons C/ha, respectively. The carbon absorption of tree stands and saplings was 71.25 tons CO2/ha and 34.99 tons CO2/ha.
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.
Pengaruh Metode Transplantasi Karang terhadap Tingkat Kelulushidupan Karang di perairan Pasir Putih Situbondo Clara Cantika Raharto; Nirmalasari Idha Wijaya; Rudi Siap Bintoro
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.v4i2.59

Abstract

Pasir Putih Waters Situbondo has beautiful coral reefs and is often used for diving activities. Due to the large amount of coral damage caused by the activities of tourists or divers, coral transplants were carried out in these waters. The Diving UKM of Hang Tuah University has carried out coral transplantation using the bioreeftek method and the shelf and substrate method while the community has carried out coral transplantation using the rack, net and substrate method. This study aimed to determine the effect of the coral transplantation method on the survival rate of corals. The data collection locations were divided into three stations with different transplantation methods, namely station 1 (bioreeftek method) and station 2 (shelf and substrate method). This research method used descriptive analysis to determine the relationship between coral transplantation method with coral survival rates and to determine the relationship between oceanographic parameters and coral survival rates. The results showed that the survival rate of corals at station 1 were 56%, station 2 was 89%, station 3 was 20%. They  showed that the coral survival rate at station 2 with the shelf and substrate method had better results. The method had high shelf legs to avoid stirring the bottom of the waters by currents or waves so that the sediment did not reach the bottom of the shelf and made of iron, which is stronger and stronger.
Variabilitas Temperatur Permukaan Laut, Salinitas, dan, Curah Hujan Pada Periode El Niño-Southern Oscillation (Enso) di Perairan Selat Madura Jennifer Ellen Toding; Supriyatno Widagdo; Rudi Siap Bintoro
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.v4i1.60

Abstract

The variability of temperature, salinity and rainfall in the Indonesian region is strongly influenced by the El Niño-Southern Oscillation (ENSO) phenomenon so that this study aims to describe the characteristics of the ENSO phenomenon, compare and analyze the characteristics of temperature, salinity and rainfall under normal conditions and changes due to the ENSO phenomenon in the Madura Strait. This study used a descriptive method by collecting data using secondary data and making a description of the observed phenomenon. Data required for 12 years from 2010-2021. The results showed that the variability of temperature measured during the 2010-2021 period showed the highest temperature values were in the closed waters of the Madura Strait with an average of 28.64°C and the lowest were in the central waters with an average value of 28.59°C. The highest rainfall value is in closed waters with an average of 6.06 mm and the lowest is in central waters with an average value of 5.562 mm. The highest salinity is in open water with an average value of 32.06 ppt while the lowest salinity is in closed water with an average of 31.42 ppt. The highest temperature and rainfall are generally found when the La Niña phenomenon is taking place, while the lowestntemperature and rainfall are found during the El Niño phenomenon. The highest salinity is generally found during the El Niño phenomenon, while the lowest salinity occurs during the La Niña phenomenon.
Pengaruh Sampah Plastik Terhadap Kelimpahan Semai Mangrove di Tambak Wedi Surabaya Megawati Mutiara Gusti; Nirmala Idha Wijaya; Mahmiah
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.v4i1.61

Abstract

One of the habits of the people that are difficult to get rid of is throwing garbage. The trash the community throws away will be exposed to seawater during high tide and spread widely. Plastic waste stuck in mangroves can also block the sunlight that mangroves need to grow even though the functions of mangroves are essential, such as preventing erosion, and abrasion, shelter for some biota, and many more. Based on this background, researchers wanted to know the effect of plastic waste on the abundance of mangrove seedlings. This study aimed to determine the effect of plastic waste cover on the growth of mangrove seedlings and the impact of plastic waste on the abundance of mangrove seedlings in Tambak Wedi Surabaya. The method used was sampling vegetation on a transect measuring 2x2 m for seedlings, 5x5 m for saplings, and 10x10 m for trees at different locations and calculating the area covered by plastic waste at each station. From the observations, data obtained at each station showed that the plastic waste covering the mangrove area, the amount of plastic waste at each station was 139.4 – 144.6 m2, the density of mangroves at three stations was 14,700 ind/ha, and for the average density of seedlings at each station of 26,666 ind/ha. When viewed from the standard criteria for mangrove damage, the density of mangrove seedlings in the Wedi Pond area is quite good.
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.
Distribusi Salinitas dan Temperatur Permukaan Berdasarkan Angin dan Arus di Selat Madura Muhamad Samodro Abdulrohiim Rohiim; Supriyatno Widagdo; Viv Djanat Prasita
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.v4i1.64

Abstract

Salinity and Sea Surface Temperature (SST) are important parameters in oceanographic and climate studies. The value of salinity at sea level is caused by precipitation and evaporation of fresh water and is influenced by the entry of fresh water into sea waters. In addition, physical parameters such as wind, ocean currents, and rainfall can also affect horizontal salinity values. Several factors that affect SST are: depth, intensity of sunlight, precipitation and evaporation, as well as wind and air circulation. The purpose of this study was to analyze the effect of seasonal wind and current patterns on salinity and SST in the Madura Strait. The period studied was from 2010 to 2020 with the main parameters analyzed were salinity, SST, wind and currents as well as rainfall and river flows that emptied into the waters as supporting parameters. The results of this study showed that the minimum average salinity value occurred in the transition season at the beginning of the year with a value of 31.8 0/00 and the highest value of 32.77 0/00 occurred in the transition season at the end of the year. And for the lowest average SPL value occurred in the east monsoon season with a value of 28.38 oC and the highest SPL value of 30.17 oC which occurred in the transition season at the beginning of the year.
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.

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