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THE EFFECT OF TEMPERATURE AND NITRATE COMPOUND ON GROWTH, BIOMASS AND FREE FATTY ACID CONTENT ON MICROALGAE CULTURE OF Spirulina sp. and Skeletonema sp. Rukminasari, Nita; Lukman, Muhammad; Tambaru, Rahmadi; Inaku, Dwi Fajriyati; Suharto, Suharto
Jurnal Bahan Alam Terbarukan Vol 7, No 1 (2018): June 2018 [Nationally Accredited]
Publisher : Universitas Negeri Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15294/jbat.v7i1.8513

Temperature and availability nutrients played an important role on growth and lipid production of microalgae.Â In this study, we examined the effect of increasing suhu and excessed and depleted NO3 on growth rate, biomass and free fatty acid concentration in the Spirulina sp and Skeletonema sp. Two microalgae were culture on Conway and Milne media for 21 days using continuous culture technique.Â There were four temperature treatments, such as 28oC, 30oC, 32oC and 34oC and three nutrient treatments, which were control nutrient treatment, without NO3 andÂ two times NO3 concentrations from control treatments with three replicates for each treatments. Results found that increasing temperature significantly affected on biomass and concentration free fatty acid, meanwhile nutrient treatments affected on growth rate, biomass and concentration of organic Carbon.Â In general, increasing temperature was more affected on Spirulina sp in terms of increasing growth rate, biomass and free fatty acid concentration. However, Skeletonema sp was more responsive toÂ availability of NO3 in the media culture for increasing free fatty acid, and percentage of free fatty acid per dry weight.

BEACH DEBRIS ON LABUANGE BEACH, BARRU DISTRICT, SOUTH SULAWESI PROVINCE, INDONESIA Isyrini, Rantih; Tambaru, Rahmadi; La Nafie, Yayu A.; Ukkas, Marzuki; Cordova, Muhammad Reza
Jurnal Ilmu Kelautan SPERMONDE Vol 4, No 2 (2018)
Publisher : Hasanuddin University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20956/jiks.v4i2.7066

To support the efforts of the Indonesian government in managing marine debris that has a broad potential negative impact in various aspects, beach debris monitoring activities are urgently required in various locations. This research was carried out from June to August 2018 in the west coast region, on Labuange beach, Barru Regency, South Sulawesi Province, Indonesia, which was exposed by the Indonesian Through-Flow. The study aimed to determine the amount, weight and composition of marine debris on Labuange beach. Marine debris was sampled from a permanent line transect with an area of 150 m2 (three replications). Samples were then cleaned, sorted, counted, and weighed. The average amount of marine debris was 5.98 + 2.13 items/m2 per month, with a total weight was 138.69 ± 91.32 g/m2 per month. Plastic and rubber category dominated every sampling period in the location. The abundance of marine debris, both regarding quantity and weight, fluctuated in high amount during the sampling period, which indicated the magnitude of the role of oceanographic factors, including the direction of waves, and lack of community awareness on marine debris impacts and management. The great amount and weight of marine debris and the type of waste, which was dominated by plastic and rubber is a potential threat to humans, marine biota, and the local or global environment.

Potentially Harmful Phytoplankton Species In The Southern Part Of West Coastal Waters Of South Sulawesi Tambaru, Rahmadi
Agrikan Jurnal Agribisnis Perikanan Vol. 15 No. 2 (2022): Agrikan: Jurnal Agribisnis Perikanan
Publisher : Fakultas Pertanian, Universitas Muhammadiyah Maluku Utara

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.52046/agrikan.v15i2.1258

HABs is a term that describes the species of harmful phytoplankton found in the waters. One of the factors triggering its development is the increase in the concentration of nutrient types nitrogen (N) and Posfor (P) is very high. To that end, a study aimed at detecting potentially dangerous types of phytoplankton (HABs) in a water has been conducted in May-July 2021. The waters in question are the coastal waters of the southern part of Makassar (JB) and the coastal waters of Takalar (coastal waters beba = BB, Boddia = BG, and Sanrobone = SB). The waters are waters located on the western coast of the southern part of South Sulawesi. Enumeration of HABs is performed on samples of water that has been filtered using net plankton. The results showed that as many as 10 potential genera of HABs have been found. The genera in question are Bacteriastrum, Chaetoceros, Nitzschia, and Pseudo-nitzchia of the Bacillariophyceae group, and Ceratium, Dinophysis, Gymnodinium, Peridinium, Prorocentrum, and Protoperidinium of the Dynophycea group. From the results of the proportion test, potentially HABs were found to be lower at about 30.13% when compared to the non-HABs phytoplankton group of about 69.87% based on spatial, and 30.57% versus 69.43% based on temporal.

SPATIAL DISTRIBUTION AND STRUCTURE OF PHYTOPLANKTON COMMUNITIES THAT HAVE THE POTENTIAL TO CAUSE HARMFUL ALGAE BLOOMS (HABS) IN THE WATERS OF LAIKANG BAY, SOUTH SULAWESI Trimurti, Fadilla; Tambaru, Rahmadi; Hatta, Muh.; Samawi, Muh Farid; Rani, Chair
Jurnal Ilmu Kelautan SPERMONDE VOLUME 10 NOMOR 2, 2024
Publisher : Hasanuddin University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20956/jiks.v10i2.19515

The presence of nutrients such as nitrate and phosphate can have a positive impact on phytoplankton growth. However, if the nutrient concentration is very high in the waters, it can cause an explosion in the phytoplankton population or Harmful Algae Blooms (HABs) in the waters. Phytoplankton explosions in waters have a negative impact on the surrounding ecosystem, marine biota, and humans. This research aimed to analyze the spatial distribution and structure of phytoplankton communities that can potentially cause HABs in the waters of Laikang Bay, South Sulawesi. This research was conducted in June 2021. The research found 20 species of phytoplankton HABs from 2 classes, namely Bacillariophyceae (8 types) and Dinophyceae (12 species). The Bacillariophyceae class has a higher percentage, 93%, and Dinophyceae at 7%. The abundance status of phytoplankton HABs is classified as not blooming, with the highest abundance found at Station 4 (control), namely 210 ± 80 cells/L. The HABs phytoplankton diversity index (H') is moderate with a value of 1.576 – 2.332, the uniformity index (E) of Station 1 (west) and Station 4 (control) is moderate with a value of 0.568 and 0.582 while Station 2 (north) and Station 3 (south) is classified as high, namely 0.807 and 0.823, the dominance index (D) is classified as low with a value of 0.135 – 0.357. Spatially, phytoplankton HABs based on the station can be divided into five groups. The results of the PCA analysis show that substations 1.A, 1.B, 1.C, 2.A, 2.B, and 2. C are characterized by high temperature and salinity parameters. Substations 3.A, 3.B, and 3.C are characterized by high nitrate and phosphate parameters. Meanwhile, substations 4.A, 4.B, and 4.C are characterized by high parameters of brightness, current speed, and pH and are associated with a high abundance of phytoplankton HABs.

ANALYSIS OF PHYSICO–CHEMICAL PARAMETERS ON PHYTOPLANKTON ABUNDANCE IN THE WATERS OF LABAKKANG DISTRICT, PANGKEP REGENCY Niartiningsih, Andi; Nawing, Nur Afifa; Samad, Wasir; Yasir, Inayah; Tambaru, Rahmadi
Jurnal Ilmu Kelautan SPERMONDE VOLUME 10 NOMOR 1, 2024
Publisher : Hasanuddin University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20956/jiks.v10i1.30100

Pangkep Regency is dominated by pond areas, one of which is located in Labakkang District. These aquaculture activities affect physico-chemical parameters in the waters. This study was aimed to analyze the influence and relationship of physico-chemical parameters on phytoplankton abundance in the waters of Labakkang District, Pangkep Regency. Data were collected using purposive sampling method in several locations, namely waters around river mouths, waters around mangroves, pond discharge waters and waters around docks. The physico-chemical parameters observed include temperature, salinity, nitrate, phosphate, Total Suspended Solid (TSS), carbon dioxide and current velocity. The results showed that the highest phytoplankton abundance was found in the waters around the river mouth with a value of 741 cells/L, while the lowest abundance was found in the pond discharge waters with a value of 154 cells/L. At the station, the highest values were obtained in the temperature parameter of 32,67ºC, nitrate of 0,03 mg/L, phosphate of 0,08 mg/L, TSS of 25,26 mg/L and current speed of 0,25 m/s. The high abundance of phytoplankton is inversely proportional to the salinity level in the water, which is 29%ₒ. The results of the analysis using the one-way ANOVA statistical test showed significant differences in phytoplankton abundance as well as temperature, salinity and TSS parameters between sampling stations. Then multiple regression analysis showed that the most influential parameters on phytoplankton abundance were temperature, nitrate, and TSS with a coefficient of determination of 92,8%. The results of this study can serve as a basis for more effective water management and better environmental monitoring in the context of aquaculture activities in the region.

Potentially harmful phytoplankton species In The Southern Part of West Coastal Waters of South Sulawesi Tambaru, Rahmadi
Agrikan: Jurnal Agribisnis Perikanan Vol 15, No 2 (2022)
Publisher : Sangia Research Media and Publishing

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29239/j.agrikan.15.2.445-451

HABs is a term that describes the species of harmful phytoplankton found in the waters. One of the factors triggering its development is the increase in the concentration of nutrient types nitrogen (N) and Posfor (P) is very high. To that end, a study aimed at detecting potentially dangerous types of phytoplankton (HABs) in a water has been conducted in May-July 2021. The waters in question are the coastal waters of the southern part of Makassar (JB) and the coastal waters of Takalar (coastal waters beba = BB, Boddia = BG, and Sanrobone = SB). The waters are waters located on the western coast of the southern part of South Sulawesi. Enumeration of HABs is performed on samples of water that has been filtered using net plankton. The results showed that as many as 10 potential genera of HABs have been found. The genera in question are Bacteriastrum, Chaetoceros, Nitzschia, and Pseudo-nitzchia of the Bacillariophyceae group, and Ceratium, Dinophysis, Gymnodinium, Peridinium, Prorocentrum, and Protoperidinium of the Dynophycea group. From the results of the proportion test, potentially HABs were found to be lower at about 30.13% when compared to the non-HABs phytoplankton group of about 69.87% based on spatial, and 30.57% versus 69.43% based on temporal.

Analisis Rasio Redfield terhadap Kesesuaian Pertumbuhan Fitoplankton di Ekosistem Mangrove Lantebung Kota Makassar Tambaru, Rahmadi; Saru, Amran; Syafiuddin, Syafiuddin; Amri, Khairul; Hatta, Muh.; Febrianti, Febrianti
Jurnal Aquatik Vol 5 No 2 (2022): Oktober 2022
Publisher : Nusa Cendana University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35508/aquatik.v5i2.8481

ABSTRACT - Phytoplankton are plants of very small size, their life hovering in waters. Changes in the abundance of types and also the structure of their communities, can be explained by the analysis of the Redfield Ratio. The Redfield ratio is defined as a comparison of the content of N and P types of nutrients in a body of water. For this reason, the purpose of this study is to analyze the Ratio of Redfield to the suitability of phytoplankton life in the Lantebung mangrove ecosystem in Makassar City. The results showed that as many as 19 phytoplankton genera classified into 3 classes were found, namely the Bacillariophyceae class consisting of 14 genera, Cyanophyceae 1 genus, and Dinophyceae 4 genera. The genus of phytoplankton found at all stations is Rhizosolenia and Chaetoceros. These two types of phytoplankton are the Bacillariophyceae group. The results of the Redfield Ratio analysis are not optimal for phytoplankton growth, the ratio is below 16 Based on this, the redfield ratio is not in accordance with phytoplankton life in the Lantebung mangrove ecosystem in Makassar City. The results of pearson's correlation analysis between Redfield Ratio and phytoplankton abundance were 50.7 %. Keywords: Redfield ratio, phytoplankton abundance, Lantebung, Makassar City.

Environmental Parameters And Phytoplankton Community Quality: Implications For Food Safety In Coastal Communities Tambaru, Rahmadi
Barakuda 45: Jurnal Ilmu Perikanan dan Kelautan Vol 5 No 1 (2023): Edisi April
Publisher : Fakultas Perikanan dan Ilmu Kelautan Universitas 17 Agustus 1945 Cirebon

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.47685/barakuda45.v5i1.353

This study aimed to evaluate environmental parameters and phytoplankton quality as well as the implications for the food safety of seafood-consuming coastal communities. The study was conducted in coastal waters of South Sulawesi, Indonesia at four sites (three stations/site): Pangkep (PK), Kuri (KR), Maros (MR), and Tallo (TL) during June, August, and October 2020. Observations formed three spatial clusters: MR1, PK; MR2, MR3, TL; KR (92.5 % similarity), and two temporal clusters: June 2020; August and October 2020 (87.9 % similarity). PCA showed parameters most strongly characterizing TL, KR, and MR (except MR1) were high levels of salinity, nitrate, nitrite, ammonium, silicate, temperature, pH, and abundance of both phytoplankton that can form harmful algal blooms (HABs) and non-HAB forming phytoplankton (non-HABs), with low current velocity. PK was characterized by high current velocity, non-HABs, orthophosphate, ammonium, nitrite, and turbidity with low nitrate and HABs. Main characterizing parameters in the temporal PCA were high current velocity and HABs with low orthophosphate in June 2020; high nitrate, ammonium, orthophosphate, and non-HABs with even lower HABs in August 2020; high turbidity, temperature, and salinity with low pH, nitrite, silicate, and HABs in October 2020. Current velocity (low at TL, KR, MR and high at PK) influenced both non-HABs and HABs. The results indicate that faster currents may have impeded HABs development so that the phytoplankton quality was still good. Therefore, the fish from these waters can be considered safe for human consumption, thereby contributing to maintaining the health of coastal communities.

ANALISIS PERUBAHAN KEPADATAN ZOOPLANKTON BERDASARKAN KELIMPAHAN FITOPLANKTON PADA BERBAGAI WAKTU DAN KEDALAMAN DI PERAIRAN PULAU BADI KABUPATEN PANGKEP Tambaru, Rahmadi; Muhiddin, Amir Hamzah; Malida, Hasrul Suaidi
Torani Journal of Fisheries and Marine Science Vol. 24 No. 3 (2014)
Publisher : Hasanuddin University

Basic of zoooplankton dependence on the phytoplankton to fulfill the requirement energy needs and creates acomplex relationship. The relationship of dependency between fitoplankton and zooplankton are very close,eventually can cause the changing in the zooplankton density in the time and space. The aims of study toaanalyze the changes in the zooplankton density on the phytoplankton abundance based on various time anddepth in the waters Badi Island of Pangkep Regency. The research has been carried out December 2009 toApril 2010. The results showed that changes in zooplankton density, not only because of the phytoplanktonabundance but also due to other factors such as sunlight. Keywords : density, abundance, zooplankton, phytoplankton, Badi Island

IDENTIFIKASI BEBERAPA SPESIES RUMPUT LAUT YANG POTENSIAL DIBUDIDAYAKAN DI PERAIRAN SULAWESI SELATAN Rukminasari, Nita; Ali, Syamsu Alam; Tambaru, Rahmadi
Torani Journal of Fisheries and Marine Science Vol. 26 No. 1 (2016)
Publisher : Hasanuddin University

Indonesia has a long costline dan have a high natural fisheries resources. One of natural resources from thecoast area is seaweed. Seaweed is export commudity from fisheries sector and Indonesia is one of the thirdmain producer for seaweed in the world. Seaweed species that have been cultured and utilized was onlyseveral species such as Glacillaria sp, Euchema cottoni and Geledium sp, on the other hand, Indonesia has ahigh diversity of seaweed. Based on LIPI data survey on 1998, it was found that 55 species of seaweed atIndonesian waters. Through this data, it showed that Indonesian water has a high potency for seaweedculture development. Aims of this study were to identify seaweed species that has a high potency to becultured at South Sulawesi’s waters and to analyse natural potency of several seaweed species that can becultured. Results study showed that diversity of seaweed species was varied within South Sulawesi’s waters.The highest number of species account for 30 species that found at Pangkep waters and the lowest number ofspecies was found at Bone waters account for 5 species. There were three class of seaweed that found fromlocations, such as Red, Brown and Green algae. The highest number of species from Red algae class wasfound from Bantaeng waters, furthermore the highest number of species from brown algae class was foundfrom Pangkep waters.Keywords : Seaweed, seaweed culture, South Sulawesi waters.

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