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All Journal ILMU KELAUTAN: Indonesian Journal of Marine Sciences BULETIN OSEANOGRAFI MARINA Jurnal Sapa Laut Acta Aquatica: Aquatic Sciences Journal Jurnal Akuatiklestari Advance Sustainable Science, Engineering and Technology (ASSET)
Kresnasari, Dewi
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Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Control & Systems Engineering Decision Sciences, Operations Research & Management Earth & Planetary Sciences Electrical & Electronics Engineering Energy Environmental Science Materials Science & Nanotechnology Other

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 1 
Hubungan Panjang Berat Tiga Jenis Ikan Introduksi yang Tertangkap di Waduk Penjalin Kabupaten Brebes Kresnasari, Dewi
Akuatiklestari Vol 4 No 1 (2020): Jurnal Akuatiklestari
Publisher : Program Studi Manajemen Sumberdaya Perairan, Fakultas Ilmu Kelautan dan Perikanan, Universitas Maritim Raja Ali Haji

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31629/akuatiklestari.v4i1.2505

Abstract

Keberadaan populasi ikan introduksi di Waduk Penjalin semakin bertambah banyak. Populasi ikan introduksi ini diduga akan mempengaruhi ekosistem di waduk tersebut. Oleh karena itu, perlu dilakukan penelitian untuk mengevaluasi pola pertumbuhan dan faktor kondisi ketiga jenis ikan introduksi yaitu Ikan Betutu (Oxyeleotris marmorata), Ikan Marsela (Parachromis managuensis) dan Ikan Nila (Oreochromis niloticus). Pengambilan sampel dilakukan secara simple random sampling pada bulan September - Oktober 2018. Sebanyak 40 ekor dari masing-masing spesies diukur panjang dan beratnya. Analisis data pola pertumbuhan pada masing-masing jenis ikan menggunakan persamaan Linear Allometric Model (LAM), dan untuk faktor kondisi dianalisis dengan menggunakan indeks pondreal. Hasil penelitian menunjukkan bahwa Ikan Betutu (Oxyeleotris marmorata) dan Ikan Nila (Oreochromis niloticus) mempunyai pola pertumbuhan allometrik negatif, sementara Ikan Marsela (Parachromis managuensis) mempunyai pola pertumbuhan isometrik. Selain itu, faktor kondisi ketiga jenis ikan tersebut menunjukkan angka diatas satu yang berarti bahwa ketiga jenis ikan tersebut dalam keadaan baik dan dapat untuk dikonsumsi.
DISTRIBUSI SPASIAL DAN PREFERENSI HABITAT GASTROPODA DI KAWASAN HUTAN MANGROVE SEGARA ANAKAN, CILACAP Kresnasari, Dewi; Gitarama, Arbi Mei; Subhan, Subhan
Jurnal Sapa Laut Vol 7, No 4: November 2022
Publisher : Fakultas Perikanan dan Ilmu Kelautan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33772/jsl.v7i4.40426

Abstract

Ecologically, the mangrove ecosystem acts as a spawning ground, nursery ground and feeding ground for various organisms. One of the biota located in the Segara Anakan mangrove ecosystem is Gastropods. This fauna plays an important role in food webs and decomposition processes. The Segara Anakan mangrove forest has undergone changes due to natural factors (sedimentation) and anthropogenic factors. If this is ignored, of course, it will affect the distribution pattern and habitat preferences. The purpose of this study was to determine the composition, abundance, distribution and habitat preferences of gastropods in the mangrove forest of Segara Anakan, Cilacap. The study was conducted in AugustOctober 2022 with a sampling period of once every two weeks. The sampling method used is purposive sampling. Two locations were selected based on different characteristics, namely: St A (eastern part of Segara Anakan, salinity 10-20 , density of mangrove Rhizophora sp. dense, close to the port) and St B (western part of Segara Anakan, salinity 5-10‰, mangrove density Rhizophora sp. is rare, close to residential areas). At each research station, five sampling points were determined, each point contained three sampling plots. The data obtained were analyzed by PCA (Principal Component Analysis). Based on the results of the research, there were 8 families of gastropod communities in St A and 6 families in St B. The most dominating families at the two observation stations were Potamididae and Neritidae. The highest abundance was found in St B at 290 ind/m2, while St A reached 180 ind/m2. The distribution pattern of gastropods is included in the grouping and even distribution criteria. From the results of PCA Gastropod analysis, it is closely related to dissolved oxygen content. This is related to the role of oxygen in the fulfillment of respiration and decomposition of organic matter.Keywords: Gastropods, Mangroves, Distribution patterns, Habitat preferences, Segara Anakan
Pengaruh Tekstur Sedimen Terhadap Family Biotic Index (FBI) Makrozoobentos Pada Vegetasi Berbeda di Laguna Segara Anakan Cilacap A'yun, Qurrota; Rahayu, Nur Laila; Zaenuri, Musyarif; Kresnasari, Dewi
Buletin Oseanografi Marina Vol 13, No 3 (2024): Buletin Oseanografi Marina
Publisher : Universitas Diponegoro

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/buloma.v13i3.62152

Abstract

Laguna Segara Anakan (LSA) Cilacap yang terletak di antara Jawa dan Nusakambangan, Jawa Tengah, merupakan habitat yang baik bagi biota makrozoobentos. Habitat tersebut dicirikan dengan sedimen pasir, debu dan liat. Identifikasi dan analisis keanekaragaman makrozoobentos penting untuk menentukan kondisi ekosistem. Tujuan dari penelitian ini adalah untuk mengetahui jenis tekstur sedimen dan untuk mengetahui kualitas perairan dengan menerapkan bioindikator menggunakan makrozoobentos. Metode yang digunakan yaitu survei dan penggambilan sampel secara acak dilakukan pada saat mengambil sampel sedimen dan makrozoobentos pada 12 titik penenilitian menggunkaan hand packing dengan bantuan cetok. Pengambilan sampel dilakukan pada bulan September – November 2023. Untuk mengetahui pengaruh tekstur sedimen terhadap FBI makrozoobentos dianalisis secara regresi. Hasil penelitian tekstur sedimen fraksi pasir berkisar 1,09-1,7%; fraksi debu berkisar 31,43-48,31% dan fraksi liat berkisar 50,6-67,17%. FBI makrozoobentos berkisar antara 7,097-7,399 yang berarti kondisi perairan di LSA Cilacap dalam kategori buruk – sangat buruk. Tekstur sedimen fraksi pasir terhadap FBI makrozoobentos memiliki pengaruh yang sangat kuat dengan nilai regresi 0,916 sedangkan tekstur sedimen fraksi liat (R = 0,223) dan debu (R = 0,198) memiliki pengaruh yang lemah terhadap FBI makrozoobentos.    Segara Anakan Lagoon (LSA) Cilacap, which is located between Java and Nusakambangan, Central Java, is a good habitat for macrozoobenthic biota. This habitat is characterized by sand, dust and clay sediments. Identification and analysis of macrozoobenthos diversity is important for determining ecosystem conditions. The aim of this research is to determine the type of sediment texture and to determine water quality by applying bioindicators using macrozoobenthos. The method used was a survey and random sampling carried out when taking sediment and macrozoobenthos samples at 12 research points using hand packing with the help of a spat. Sampling was carried out in September – November 2023. To determine the effect of sediment texture on the macrozoobenthos FBI, it was analyzed using regression. The results of the sediment texture research, the sand fraction ranged from 1.09-1.7%; the dust fraction ranges from 31.43-48.31% and the clay fraction ranges from 50.6-67.17%. The FBI macrozoobenthos ranges from 7,097-7,399, which means that the water conditions in the Cilacap LSA are in the bad – very bad category. The sand fraction sediment texture on macrozoobenthos FBI had a very strong influence with a regression value of 0.916, while the clay fraction sediment texture (R = 0.223) and dust (R = 0.198) had a weak influence on macrozoobenthos FBI.
Leaf Damage in Segara Anakan Mangrove Forest, Cilacap Kresnasari, Dewi; Zainuri, Muhammad; Muskananfola, Max Rudolf; Pribadi, Rudhi
Buletin Oseanografi Marina Vol 13, No 3 (2024): Buletin Oseanografi Marina
Publisher : Universitas Diponegoro

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/buloma.v13i3.63137

Abstract

Segara Anakan Mangrove Forest in Cilacap is one of the most extensive mangrove forests on the southern coast of Java Island. This study aims to determine the level of herbivory and environmental conditions. The sampling technique used was purposive random sampling, which considered the different characteristics of the vegetation. Sonneratia caseolaris dominated Station 1, while Station 2 was more diverse, including Avicennia marina, Avicennia alba, Rhizophora mucronata, Sonneratia caseolaris, and Aegiceras corniculatum. Each station is spread over three points, each with five sampling plots, representing the distribution and zonal homogeneity of carrying capacity. The research was conducted in May, August, and November 2023, based on the different temporal seasons in Indonesia. The results showed biotic factors from herbivory activity and abiotic factors such as the hydrological cycle caused mangrove leaf damage. The class of leaf damage caused by herbivory at all observation stations was mainly in class I (<2.5%). The most leaf damage was found in old leaves, which is related to the optimal photosynthesis process producing carbohydrates as a food source for herbivores. Additionally, tannin content in the leaves plays a role in protection from excessive UV radiation during the dry season. This condition indicates that Segara Anakan mangrove forest is still in good condition. PCA analysis results show that mangrove leaf damage is closely related to the age of the leaves.
Litter Productivity Dynamics in Segara Anakan Mangrove Forest, Cilacap, Indonesia Kresnasari, Dewi; Zainuri, Muhammad; Muskananfola, Max Rudolf; Pribadi, Rudhi; Wiarta, Rinto
ILMU KELAUTAN: Indonesian Journal of Marine Sciences Vol 30, No 1 (2025): Ilmu Kelautan
Publisher : Marine Science Department Diponegoro University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/ik.ijms.30.1.152-162

Abstract

Mangrove litter is a critical component of the nutrient cycle, reflecting soil fertility and water quality within the mangrove ecosystem. This study investigates the dynamics of litter productivity in the Segara Anakan mangrove forest in Cilacap. The study area is divided into two locations with three points, with five litter traps installed at each point. Sonneratia caseolaris dominates vegetation characteristics at Station 1, while Station 2 has more diverse vegetation, including Sonneratia caseolaris, Aegiceras corniculatum, Acanthus ilicifolius, Derris trifoliata, Rhizophora mucronata, Avicennia alba, and Avicennia marina. Sampling follows seasonal changes in Indonesia, covering June 2023 to March 2024. The primary data for this study include aboveground litterfall production, estimated using litter traps, and the litter layer on the forest floor collected through soil transects. Secondary data comprise weather measurements, including air temperature, rainfall, wind speed, and humidity. Litterfall and litter layer were collected four times: June (dry season), September (transition from dry to rainy season), December (rainy season), and March (transition from rainy to dry season). The results indicate a total litter productivity of 18.99 tonnes ha-1 yr-1. The lowest litter production was observed in September, while the highest was in March. Leaf litter contributed the most, accounting for 71.49%, followed by twigs at 19.19%, flowers/fruits at 8.31%, stipules at 0.62%, and the lowest portion from other unidentified materials at 0.39%. Litter productivity shows a strong correlation (0.99) with rainfall. The main factors influencing litter productivity include environmental factors, primarily rainfall, and physiological factors, such as flowering and fruiting phenology.
Physicochemical and nutritional quality of smoke catfish (Clarias gariepinus) with coconut shell liquid smoke during frozen storage Setyastuti, Aryanti Indah; Prasetyo, Dwi Yanuar Budi; Kresnasari, Dewi; Kurniawati, Any; Sarmin, Sarmin; AGS, Dwi Apriliani
Acta Aquatica: Aquatic Sciences Journal Acta Aquatica: Jurnal Ilmu Perairan, Vol. 8: No. 3 (December, 2021)
Publisher : Universitas Malikussaleh

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29103/aa.v8i3.5099

Abstract

This research was aims to determine the effect of coconut shell liquid smoke application on the smoking process on the physicochemical quality of smoked catfish stored at freezing temperature for 14 days. The test parameters used were proximate analysis (protein, fat, and water content), salt-soluble protein, pH, texture (adhesion, springness, cohesiveness, hardness). Analysis of the data in this experiment using a completely randomized design with different storage time treatments (0 days; 7 days; and 14 days) at freezing temperatures. The results of the analysis of variance showed that the application of coconut shell liquid smoke to smoked catfish gave a significant difference (P <0.05) to the physicochemical quality including proximate, salt-soluble protein, pH, and texture. During storage, there was a decrease in the proximate value and salt soluble protein of smoked catfish, while the pH value increased. Meanwhile, texture, adhesion, springiness, and cohesiveness values decreased along with the decreasing proximate value of smoked catfish, and the hardness value showed an increase during storage resulting in a harder texture of fish meat due to protein denaturation.Keywords: Coconut shell liquid smoke; Frozen storage; Physicochemical quality; Smoked catfish nutritional
Functional properties from nile tilapia (Oreochromis niloticus (Linnaeus, 1758)) frame protein hydrolysis Prasetyo, Dwi Yanuar Budi; Setyastuti, Aryanti Indah; Kresnasari, Dewi; Apriliani AGS, Dwi
Acta Aquatica: Aquatic Sciences Journal Acta Aquatica: Jurnal Ilmu Perairan, Vol. 8: No. 3 (December, 2021)
Publisher : Universitas Malikussaleh

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29103/aa.v8i3.5526

Abstract

This study was to determine the functional properties of fish protein hydrolysis produced from tilapia frame. This study used a factorial design where the first factor was different types of proteolytic enzymes (E1 = bromelain, E2 = papain) and the second factor was different hydrolysis time (T1 = 5 hours, T2 = 6 hours) and was carried out with 3 replications. The results of the analysis showed that the different types of enzymes and hydrolysis time had a significant difference on the yield, degree of hydrolysis, proximate, viscosity, and protein solubility. This product has the potential to be used as food additives that can give special function properties so further research needs to be carried out to investigate these special functional properties for health and reduce the fat content that can affect the self-life product.Keywords: Functional properties; Protein hydrolysis; Nile tilapia frame
Interaction Of Macrozoobenthos Abudance With Environmental Conditions In Segara Anakan, Cilacap Kresnasari, Dewi; Ayu, Nurina; Gitarama, Arbi Mei
Acta Aquatica: Aquatic Sciences Journal Acta Aquatica: Jurnal Ilmu Perairan, Vol. 9: No. 2 (August, 2022)
Publisher : Universitas Malikussaleh

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29103/aa.v9i2.6372

Abstract

Segara Anakan Lagoon is a unique and distinctive area where most of the ecosystem is dominated by mangrove ecosystems. Some fauna make the ecosystem as a place for feeding ground, nursery ground and spawning ground for example macrozoobenthos. Its sessile nature makes the biota used as a bioindicator of an area. The Segara Anakan mangrove forest is currently under pressure due to the process of sedimentation and conversion of functions by residents. Therefore, this study aims to determine the interaction between the abundance of macrozoobenthos with environmental conditions. The research was carried out in July-September 2021 at the Segara Anakan Lagoon, Cilacap. The sampling method used is the Sample Survey Method with three stations determined purposively by describing different habitat conditions. Sampling was carried out on a monthly and the data obtained were analyzed by PCA. The results showed that the highest abundance of macrobenthos was found in the western part of the Segara Anakan mangrove forest. The value of macrozoobenthos abundance is influenced by TSS related to food availability. Furthermore, the quality of water and soil is still in accordance with the quality standards of marine life.Keywords: Environmental Characteristics; Macrozoobenthos; Mangrove; Segara Anakan
Feeding Habits of Marsela Fish (Parachromis managuensis) In Penjalin Reservoir Brebes, Central Java Kresnasari, Dewi; Darajati, Anggun Dwita
Advance Sustainable Science, Engineering and Technology Vol 2, No 2 (2020): May-October
Publisher : Universitas PGRI Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26877/asset.v2i2.6222

Abstract

Abstract. The presence of introduced fish populations in the Penjalin Reservoir is increasing, one of the dominant ones being caught is Marsela (Parachromis managuensis). It is feared that this fish population will continue to increase and will have a negative impact on other organisms, especially native fish communities. This study aims to determine the eating habits of Marsela fish, the composition of the type of food and its relationship to the abundance of plankton in the waters. This research was conducted in September-October 2018. The method used was CPUE with a sampling technique that is Simple Random Sampling. Sampling of fish in one day is done 6 times, namely at 05:00, 11:00, 17:30, 21:00, 00:00, and 03:00. Fish samples obtained are then grouped according to length and then an analysis of the contents of the stomach. The results showed that in the Penjalin Reservoir the percentage of phytoplankton presence was 96% with the highest abundance found in the Bacillariophyta group. Marsela is an omnivorous fish with popular foods are Chlorophyta and Charophyta. However, in adulthood Marsela fish also eat animals.Keywords: Marsela Fish (Parachromis managuensis), Fish Eating Habits, Penjalin Reservoir
Co-Authors A'yun, Qurrota Ags, Dwi Apriliani Any Kurniawati, Any Arbi Mei Gitarama, Arbi Mei Ayu, Nurina Darajati, Anggun Dwita Dwi Apriliani AGS, Dwi Max Rudolf Muskananfola Muhammad Zainuri Prasetyo, Dwi Yanuar Budi Rahayu, Nur Laila Rudhi Pribadi Sarmin Sarmin Setyastuti, Aryanti Indah Subhan Subhan Wiarta, Rinto Zaenuri, Musyarif