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Acta Aquatica: Aquatic Sciences Journal
Published by Universitas Malikussaleh
ISSN : 24069825     EISSN : 26143178     DOI : -
Core Subject : Science, Education,
Materials Science & Nanotechnology Other
Acta Aquatica: Aquatic Sciences Journal is a scientific open access journal in the field of aquatic sciences, published periodically (April and October) by the Institute of Research and Community Service (LPPM) Universitas Malikussaleh (Malikussaleh University) in cooperation with Marine Center Universitas Malikussaleh, Department of Aquaculture Universitas Malikussaleh and Department of Marine Science Universitas Malikussaleh. Acta aquatica are publish original research, overviews and reviews relating to aquatic environments (wetlands, freshwater and marine waters) and the border limits of these environmental systems and the impacts of human activities on the environmental systems. Acta Aquatica has a related studies in aquatic bioecology, aquaculture, hydrology, biodiversity of aquatic biosphere, oceanology, exploitation and exploration technology of aquatic resources, fisheries product technology, aquatic microbiology, aquatic modeling, aquatic geographic information systems, and socio-economic of aquatic resources.
Arjuna Subject : -
Articles 341 Documents
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Pengaruh formulasi yang berbeda pada pakan pelet terhadap pertumbuhan ikan lele dumbo (Clarias gariepinus) Defrizal, Defrizal; Khalil, Munawwar
Acta Aquatica: Aquatic Sciences Journal Acta Aquatica: Aquatic Sciences Journal, Vol. 2: No. 2 (October, 2015)
Publisher : Universitas Malikussaleh

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29103/aa.v2i2.342

Abstract

Penelitian ini bertujuan untuk mengetahui pengaruh formulasi yang berbeda pada pakan terhadap pertumbuhan ikan lele dumbo (Clarias gariepinus) yang dilaksanakan pada tanggal 22 Mei - 22 Juni 2014 di Laboratorium Hatchery dan Teknologi Budidaya Program Studi Budidaya Perairan, Reulet Aceh Utara. Metode yang digunakan dalam penelitian ini adalah metode ekperimental dengan menggunakan rancangan acak lengkap (RAL) Non Faktorial dengan empat perlakukan dan tiga kali ulangan Hasil penelitian menunjukkan bahwa formulasi yang berbeda pada pakan pelet memberi pengaruh yang sangat berbeda nyata terhadap konsumsi pakan harian, pertumbuhan berat maupun panjang, rasio konversi pakan, respon ikan terhadap pakan pada ikan lele dumbo (Clarias gariepinus) dimana Fhitung > Ftabel. Dari hasil uji BNT diperoleh bahwa konsumsi pakan harian, pertumbuhan, dan respon ikan terhadap pakan terbesar diperoleh pada perlakuan D, A, C dan B. Sedangkan nilai rasio konversi pakan tertinggi diperoleh pada perlakuan A, D, C dan B. Dari hasil penelitian juga diperoleh hasil bahwa pengaruh formulasi yang berbeda pada pakan pelet memberi angka kelulushidupan ikan lele dumbo (Clarias gariepinus) semua perlakuan yaitu 100%. Parameter kualitas air pada saat penelitian yaitu rata-rata suhu 26-28 0C dan pH 7,4-7,5. Nilai ini cocok dan layak untuk kehidupan ikan lele dumbo (Clarias gariepinus). Diharapkan ada penelitian lanjutan mengenai pemberian pakan pelet yang diformulasikan dari bahan yang berbeda terhadap jenis ikan lainnya.This study aimed to determine the effect of different feed formulations on the growth of African catfish (Clarias gariepinus) which was held on May 22th - Juni 2014 at Laboratory of Aquaculture Hatchery and Technology Studies Program Aquaculture, Reulet North Aceh. The method used in this study was an experimental method using a completely randomized design (CRD) Non-factorial with four treatments and three replications The results showed that different formulations on feed a significantly different influence on daily feed consumption, weight and length growth, feed conversion ratio, the response of fish to feed on African catfish (Clarias gariepinus) where as Fvalue > F table. The biggest respons on daily feed intake growth added obtained from feed without addition of others alternatife. Then it was followed by feed A, C and B. While the highest feed conversion ratio values obtained in treatments A, D, C and B. From the results of the study also the result that the effect of different formulations on feed pellets give the fish survival rate of African catfish (Clarias gariepinus) all treatment that is 100%. Water quality parameters at the time of the study with an average temperature of 26-28 0C and pH 7.4 to 7.5. This value is suitable and feasible for the life of African catfish (Clarias gariepinus). It is expected that no further research on feeding pellets formulated from different materials to other fish species.
Pengaruh pemberian pupuk kascing (bekas cacing) yang difermentasi dengan dosis yang berbeda dalam kultur Spirulina sp Muliani, Muliani; Ayuzar, Eva; Amri, Muhammad Chairul
Acta Aquatica: Aquatic Sciences Journal Acta Aquatica: Aquatic Sciences Journal, Vol. 5: No. 1 (April, 2018)
Publisher : Universitas Malikussaleh

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29103/aa.v5i1.658

Abstract

Spirulina sp adalah salah satu pakan alami yang umum digunakan dalam kegiatan pemeliharaan larva ikan dan udang. Penambahan pupuk kascing sebagai sumber nutrien diduga dapat digunakan untuk meningkatkan kelimpahan sel Spirulina sp. Adapun manfaat dari penelitian ini diharapkan dapat menjadi sumber informasi untuk masyarakat dan instansi terkait dalam membudidayakan pakan alami Spirulina sp. Penelitian ini telah dilaksanakan pada tanggal 25 Februari-16 Maret 2017 di Balai Perikanan Budidaya Air Payau Ujong Batee, Kecamatan Mesjid Raya, Kabupaten Aceh Besar, Provinsi Aceh. Metode penelitian yang digunakan metode eksperimen dengan Rancangan Acak Lengkap (RAL) non-faktorial yang terdiri dari 4 perlakuan dan 3 ulangan. Adapun dalam penelitian ini adalah perlakuan A (media kultur kascing 0,7 gr/l), perlakuan  B (media kultur kascing 0,8gr/l), perlakuan C (media kultur kascing 0,9gr/l), perlakuan D (kontrol  menggunakan pupuk UREA, ZA, TSP, Fecl, EDTA dan vitamin B12). Hasil penelitian menunjukkan bahwa penggunaan pupuk kascing untuk meningkatkan kelimpahan sel Spirulina sp memberikan pengaruh sangat berbeda nyata dengan F Hitung (35,75) > F Tabel0.01(7.59) terhadap kelimpahan rata-rata sel Spirulina sp akan tetapi tidak memberikan pengaruh berbeda nyata terhadap puncak populasi Spirulina sp dengan F hitung (2.59) < F Tabel0.05 (4.07) terhadap puncak populasi Spirulina sp.Spirulina sp is one of the most common natural food used in the culture activities of fish and shrimp larvae. The addition of vermicompost as a nutrient source was thought to be used to increase the abundance of Spirulina sp cells.The benefits of this research was expected to be a source of information for the public and related agencies in cultivating natural food Spirulina sp.This research was conducted on February 25 - March 16, 2017 at Hatchery Cultivation Brackish Water Center of Ujong Batee,Mesjid Raya, Aceh Besar, Aceh.The research method used was experimental method with non factorial Completely Randomized Design (CRD) consisting of 4 treatments and 3 replications.In this research, treatment A (culture media vermicompost 0,7 gr/L), treatment B (culture media vermicompost 0,8 gr/L), treatment C (culture media vermicompost 0,9 gr/L), treatment D (control by using fertilizer UREA, ZA, TSP, Fecl, EDTA and vitamin B12).The results showed that the use of vermicompost to increase the abundance of Spirulina sp cells gave significant different effect with F Count (35,75)> F Table 0.01 (7.59) to the average abundance of spirulina sp cells but did not give significant different effect to the peak Spirulina sp population with F Count (2.59) <F Table 0.05 (4.07) against peak population Spirulina sp.
The occurrence of the Atlantic species Pisodonophis semicinctus (Osteichthyes: Ophichthidae) in the Gulf of Antalya, Turkey Gökoğlu, Mehmet; Biçer, Erkan; Korun, Jale; Gökoğlu, Kemal; Teker, Serkan
Acta Aquatica: Aquatic Sciences Journal Acta Aquatica: Aquatic Sciences Journal, Vol. 7: No. 1 (April, 2020)
Publisher : Universitas Malikussaleh

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29103/aa.v7i1.2234

Abstract

Fishermen caught a different eel species at night with hook on July 7, 2019 (36°48'59.21"N: 30°38'23.44"E). This fish has not been seen before in the Gulf of Antalya. This fish was identified as Pisodonophis semicinctus (Richardson, 1848). With the identification of this fish, a new species was added to the fish fauna of the Gulf of Antalya.  In the present paper, we reported P. semicinctus for the first time from the Gulf of Antalya, Turkey (North-Eastern Mediterranean), for the third time from marine waters of Turkey.Keywords: Occurence; Pisodonophis semicinctus; the Gulf of Antalya
Fragmentation method of coral (Caulastrea furcata) for growth measured at controlling condition Zulfikar, Zulfikar; Soedharma, Dedi; Yasin, Zulfigar; Tan Shau Hwai, Aileen
Acta Aquatica: Aquatic Sciences Journal Acta Aquatica: Aquatic Sciences Journal, Vol. 1: No. 1 (October, 2014)
Publisher : Universitas Malikussaleh

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29103/aa.v1i1.293

Abstract

The objective of the research are: (1) to analyze the water quality condition of water circulation system at laboratory and (2) to measure the growth (length and height) and survival rate of Caulastrea furcata which was fragmented at the laboratory. The water quality condition at the laboratory showed that every parameter has normal value in which organism can live and grow. Natural feed such as Copepoda and Nannoclhoropsis were also cultured at the laboratory as food for the coral. Transplantation was done by cutting the colony of coral or by breaking the branch of coral into pieces from every kind of coral spesies and placed those on artificial substrate made from ceramic bricks. Cutting process was done after the acclimatization process. Fragmentation treatment of C. furcata become 1 polyp, 2 polyp, 3 polyp and 4 polyp that was reared on circulation system did not give significant impact on height and length growth after 160 days. Mean of growth length of C. furcata on treatment 1, 2, 3 and 4 polyps in every month after 160 days was 1.64 mm, 1.55 mm, 1.42 mm and 1.08 mm, respectively, whereas mean of growth broad was 0.71 mm, 0.82 mm, 0.51 mm and 0.62 mm, respectively.  Fragmentation treatment of C. furcata become 1 polyp was best length if compare other treatment.Tujuan penelitian ini adalah: (1) menganalisis kondisi kualitas air pada system sirkulasi air di laboratorium dan (2) mengukur pertumbuhan (panjang dan tinggi) dan tingkat kelulushidupan Caulastrea furcate yang telah difrakmentasi di laboratorium. Nilai kualitas air menunjukkan bahwa setiap parameter adalah normal dan dapat mendukung kehidupan dan pertumbuhan organisme. Pakan alami seperti Copepoda dan Nannoclhoropsis yang juga dikultur di laboratorium sebagai pakan karang. Tansplantasi dilakukan melalui pemotongan koloni karang pada bagian cabang karang kedalam bagian kecil dari setiap spesies karang dan ditempatkan pada subtrak buatan yang dibuat dari keramik. Proses pemotongan dilakukan setelah proses aklimatisasi dilakukan. Perlakuan frakmentasi C. furcate menjadi 1 polip, 2 polip, 3 polip dan 4 polip kemudian didedahkan dalam air berskirkulasi tidak memberikan efek yang signifikan terhadap pertumbuhan tinggi dan panjang setelah 160 hari. Rata-rata pertambahan lebar pada perlakuan 1, 2, 3 dan 4 polip pada setiap bulan setelah 160 hari adalah 1.64 mm, 1.55 mm, 1.42 mm dan 1.08 mm. dimana rata-rata pertumbuhan tinggi secara berurutan adalah 0.71 mm, 0.82 mm, 0.51 mm dan 0.62 mm. Perlakuan frakmentasi 1 polip pada C. furcate menghasilkan panjang terbaik dibandingkan perlakuan lainnya.
Navigating Fish Food Insecurity by Simultaneous Household and Marketed Surplus-Led Productions in Kogi State of Nigeria Sadiq, Sanusi Mohammed; Singh, I P; Ahmad, M M
Acta Aquatica: Aquatic Sciences Journal Acta Aquatica: Jurnal Ilmu Perairan, Vol. 8: No. 2 (August, 2021)
Publisher : Universitas Malikussaleh

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29103/aa.v8i2.4779

Abstract

The study determined the factors influencing simultaneously household and marketed surplus-led fish production in Nigerias Kogi State using cross-sectional data collected from 105 fish farmers. The sample size was achieved using a multi-stage sampling technique and the collected data were elicited viz. structured questionnaire complemented with interview schedule. Both descriptive and inferential statistics were used to achieve the conceptualized objectives. Empirical evidence showed that marketed surplus-led fish production was affected by less risky non-farm incomes with high-income turnover and capital paucity. However, marketable surplus-led production was enhanced by enlarged income, readily available demand that matches the supply, and entrepreneurship zeal among the youthful population in the studied area. In view of the foregoing, the research recommends the need to strengthen the value chain of fish marketing so as to contain any challenge viz. market imperfection which in the long run will jeopardize market-orientation of fish farming which is nascent among most of the farmers in the studied area. In addition, there is a need to address gender inequality in order to arrest poverty vulnerability among women folk viz. budget gender mainstreaming so as to achieve growth and development which are pre-requisite for globalization.Keywords: Food security; Marketable surplus; Purpose; Fish farming; Kogi State; Nigeria
Efektivitas kombinasi pakan ampas tahu dan pelet untuk pertumbuhan ikan lele sangkuriang (Clarias sp) Hartami, Prama; Rusydi, Rachmawati
Acta Aquatica: Aquatic Sciences Journal Acta Aquatica: Aquatic Sciences Journal, Vol. 3: No. 2 (October, 2016)
Publisher : Universitas Malikussaleh

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29103/aa.v3i2.323

Abstract

Pakan merupakan bagian utama dalam menunjang keberhasilan kegiatan budidaya yang dilakukan. Dengan demikian, diperlukan kajian yang intensif untuk mencari formulasi yang tepat agar tujuan tersebut dapat tercapai secara optimal. Penelitian ini dilakukan untuk menguji persentase yang optimal antara ampas tahu dengan pelet untuk meningkatkan pertumbuhan ikan lele sangkuriang dan menekan biaya pakan seminimal mungkin. Metode analisa data yang digunakan berupa rancangan acak kelompok non-faktorial dengan 5 (lima) perlakuan dan 3 (tiga) kali ulangan, selanjutnya data dianalisis dengan uji F. Perlakuan tersebut berupa: 1) Pakan A: Ampas tahu 80% + pelet 20%; 2) Pakan B: Ampas tahu 60% + pelet 40%; 3) Pakan C: Ampas tahu 40% + pelet 60%; 4) Pakan D: Ampas tahu 20% + pelet 80%; dan 5) Pakan E: Pelet 100% (kontrol). Parameter penelitian meliputi efisiensi pakan, laju pertumbuhan ikan, dan kelangsungan hidup. Hasil penelitian menunjukkan bahwa nilai efisiensi pakan terbaik pada pakan kontrol (pelet) sebesar 77,61%, laju pertumbuhan harian ikan lele sangkuriang yang terbaik diperoleh dari pakan pelet (kontrol) sebesar 3,64%. Sementara untuk kelangsungan hidup yang terbaik didapat pada perlakuan pakan B dan C yaitu sebesar 100%.Feed is a major part in the success of farming activities undertaken. Thus, the necessary intensive study to find the right formulation so that these objectives can be achieved optimally. This study was conducted to test the optimal percentage of tofu by product (TbP) with the pellets to increase fish growth and suppress catfish feed costs to a minimum. Data analysis method used in the form of non-factorial randomized design with 5 (five) treatments and 3 (three) replications, then the data were analyzed by F test. These treatments include: 1) Feed A: TbP 80% + 20% pellets; 2) Feed B: TbP 60% + 40% pellets; 3) Feed C: TbP 40% + 60% pellets; 4) Feed D: TbP 20% + 80% pellets; and 5) Feed E: Pellet 100% (control). Parameter research include feed efficiency, growth rate of fish, and survival. The results showed that the best feed efficiency in the control diet (pellets) amounted to 77.61%, daily growth rate of fish catfish are best obtained from feed pellets (control) of 3.64%. While survival is best obtained at treatment of feed B and C equal to 100%.
Coral recruitment before and after bleaching event 2010 in Pulau Weh, Aceh, Indonesia Zulfikar, Zulfikar; Yasin, Zulfikar; Hwai, Aileen Tan Shaw; Ern, Ng Jol
Acta Aquatica: Aquatic Sciences Journal Acta Aquatica: Aquatic Sciences Journal, Vol. 2: No. 1 (April, 2015)
Publisher : Universitas Malikussaleh

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29103/aa.v2i1.356

Abstract

A monitoring study was conducted at Pulau Weh, which is located in Sabang Province Aceh, Indonesia in the northern part of Sumatera from April 2010 to April 2013. This study aims to monitor and evaluate the current status of coral reef, compotition and abundance of juvenile corals on natural substrates and recruits in the chosen sampling sites. Six sampling stations were chosen to determine the changes in coral reef after bleaching event and two stations were chosen to study coral recruitment. The survey was conducted using 5x5m permanent quadrate, placed at two different depths: 4m and 8m. Photo Quadrate method was applied to monitor the coral changes and the recovery of coral reefs in Pulau weh. Where at each sampling location within the quadrate, a series of photographs was taken with a digital camera with wide angle lens and analyzed in the laboratory. A digital probe was placed at each site, where by the temperature was recorded every 2 hours starting from April 2010 to September 2011. An increasing and extreme temperature shock was recorded in May 2010, where the highest temperature recorded was as high as 32 °C for a long duration. From the series of observation, 85% of the coral coverage in the study area in the six sampling site was found bleached and dead during the bleaching phenomena in May to July 2010. The overall number and density of juvenile corals were higher in the upper reef than the lower reef. Low coral recruitment occurred during the sampling periods interfered with disturbances (bleaching event and storm) compared to normal sampling period without disturbance.Penelitian ini dilakukan di Pulau Weh, yang terletak di Provinsi Aceh, Indonesia mulai dari bulan April 2010 sampai dengan April 2013. Penelitian ini bertujuan untuk memantau dan mengevaluasi status terumbu karang, komposisi dan kelimpahan juvenil karang pada substrat alami dan rekrutmen di lokasi yang sudah ditentukan. Enam stasiun pengambilan dipilih untuk melihat perubahan terumbu karang setelah peristiwa pemutihan berlangsung dan dua stasiun dipilih untuk melihat rekrutmen karang baru.  Survei ini dilakukan dengan menggunakan kuadrat  permanen yang berukuran 5x5m yang  ditempatkan pada dua kedalaman yang berbeda yaitu: 4m dan 8m.  MetodeFoto Kuadrat diaplikasikan untuk memantau perubahan karang dan pemulihan terumbu karang di Pulau weh setelah peristiwa pemutihan.  Foto hasil pengambilan gambar dengan kamera bawah air selanjutnya dianalisis di laboratorium. Alat perekam suhu dan cahaya digital ditempatkan di setiap lokasi penelitian, dimana suhu akan direkam setiap 2 jam sekali mulai dari April 2010 sampai September 2011. Peningkatan suhu secara ekstrim telah dicatat pada bulan Mei 2010 yaitu setinggi 32 °C dalam jangka waktu yang lama. Dari serangkaian pengamatan 85% dari tutupan karang di daerah penelitian ditemukan mati  disebabkan  fenomena bleaching bulan  Mei-Juli 2010. Jumlah keseluruhan dan kepadatan juvenile karang lebih tinggi pada terumbu bagian atas daripada karang yang lebih rendah. Rekrutmen karang yang rendah terjadi selama periode bleaching berlangsung dibandingkan dengan periode sampling normal tanpa gangguan.
Pengaruh lama perendaman menggunakan air kelapa terhadap maskulisasi ikan lele masamo (Clarias sp) Laheng, Suardi; Widyastuti, Anjar
Acta Aquatica: Aquatic Sciences Journal Acta Aquatica: Aquatic Sciences Journal, Vol. 6: No. 2 (October, 2019)
Publisher : Universitas Malikussaleh

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29103/aa.v6i2.1398

Abstract

AbstrakTujuan penelitian untuk mengetahui bagaimana proses maskulinisasi pada ikan lele masamo dan bagaimana hasil maskulinisasi ikan lele masamo menggunakan air kelapa. Penelitian ini dilaksanakan di Balai Benih Ikan Lokal Tatatanga, Kota Palu. Hewan uji yang digunakan dalam penelitian ini yaitu larva ikan lele masamo (Clarias sp) berjumlah 360 ekor berumur 7 hari. Rancangan penelitian yang digunakan rancangan acak lengkap (RAL) dengan empat perlakuan dan tiga kali ulangan, yaitu : P1 (lama waktu perendaman 5 jam), P2 (lama waktu perendaman 10 jam), P3 (lama waktu perendaman 15 jam) dan P4 (lama perendaman 20 jam). Larva ikan Lele masamo berumur 7 hari direndam dalam air kelapa dengan dosis 30%/L. Pengamatan dilakukan pada umur ikan 40 hari. Hasil penelitian menunjukkan rata-rata jumlah persentase ikan lele jantan pada perlakuan P1; P2; P3 dan P4 masing-masing adalah 53,89; 65,56; 44,44 dan 0,00%. Perlakuan P2 efektif dalam maskulinisasi ikan lele masamo melalui perendaman air kelapa.Kata kunci: maskulinisasi; lele masamo; air kelapa; pertumbuhanAbstractThis present work aimed to investigate the masculinization of masamo catfish (Clarias sp) larvae by immersion with coconut water. The experiment was carried out in local fish nurtury centre in Tatatanga, Palu.  The 7-days-old larvae (360 individuals) of masamo catfish was used. A completely randomized design was arranged, using four levels of immersion time:  5, 10, 15, and 20 (named as P1, P2, P3, and P4, respectively). The immersion was carried out in coconut water and made three triplicates. After the fish reached 40 days old, the treatment efficacy was evaluated. The results showed that the percentage of male catfish differed sharply, i.e. 53,89% (P1), 65,56% (P2), 44,44% (P3), and 0,00% (P4). To sum up, we concluded that P2 demonstrated the highest percentage, being the most effective masculinization treatment on masamo catfish.Keywords: masculinization; masamo catfish; coconut water; growth
Rhizophoraceae family in North Rupat KKPD Mangrove Forest Riau Province - Part II. Demographic Structure, Density, Ecological Index and Spread Pattern Syahrial, Syahrial; Erniati, Erniati; Pratiwi, Bengi; Satya Putra, Muhammad Yulianda
Acta Aquatica: Aquatic Sciences Journal Acta Aquatica: Jurnal Ilmu Perairan, Vol. 8: No. 1 (April 2021)
Publisher : Universitas Malikussaleh

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29103/aa.v8i1.3827

Abstract

Pemantauan dan pemahaman struktur ekologi mangrove famili Rhizophoraceae sangat penting untuk pengelolaan dan pelestarian lestari, dimana studi famili Rhizophoraceae dilakukan pada Juli 2018 di hutan mangrove KKPD Rupat Utara untuk dijadikan sebagai data dasar dalam evaluasi pengelolaan mangrove. , terutama dari anggota keluarga Rhizophoraceae. Pengumpulan data kondisi vegetasi mangrove pada famili Rhizophoraceae dengan menggambar garis transek dan plot yang tegak lurus dengan daratan, kemudian dilakukan observasi di tiga lokasi yaitu Desa Titi Akar, Pulau Babi, dan Desa Tanjung Medang. Untuk indeks ekologi, keanekaragaman famili Rhizophoraceae KKPD Rupat Utara tergolong rendah (rata-rata 0,91), dominasinya sedang (rata-rata 0,61), keseragaman tergolong tidak stabil (rata-rata 0,58) dan pola sebaran tergolong kelompok dengan indeks morisitas rata-rata 1,41.
Dekomposisi serasah daun mangrove Rhizophora apiculata di Desa Bagan Asahan, Kecamatan Tanjungbalai, Kabupaten Asahan, Provinsi Sumatera Utara Sari, Kusuma Widya; Yunasfi, Yunasfi; Suryanti, Ani
Acta Aquatica: Aquatic Sciences Journal Acta Aquatica: Aquatic Sciences Journal, Vol. 4: No. 2 (October, 2017)
Publisher : Universitas Malikussaleh

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29103/aa.v4i2.308

Abstract

Mangrove menghasilkan serasah yang akan mengalami proses dekomposisi yang kemudian dimanfaatkan sebagai sumber hara bagi tanaman dan juga merupakan sumber makanan bagi ikan serta invertebrata yang penting. Tujuan dari penelitian ini adalah untuk mengukur dekomposisi serasah daun R. apiculata dan mengetahui kandungan unsur hara karbon (C), nitrogen (N) dan fosfor (P) pada serasah daun Rhizophora apiculata yang dilepas selama proses dekomposisi. Penelitian dilakukan pada bulan Februari hingga Mei 2017 di Desa Bagan Asahan Kecamatan Tanjungbalai Kabupaten Asahan Provinsi Sumatera Utara. Penentuan stasiun penelitian menggunakan metode purposive sampling pada tiga stasiun dengan penentuan stasiun berdasarkan pengamatan ketersediaan jenis mangrove R. apiculata. Hasil penelitian menunjukkan laju dekomposisi serasah daun R. apiculata pada hari ke-90 yaitu pada stasiun I bernilai 13,04 stasiun II bernilai 11,42 dan stasiun III bernilai 10,24. Kandungan unsur hara karbon selama proses dekomposisi 90 hari yaitu stasiun I sebesar 16,24 %, stasiun II sebesar 15,29% dan stasiun III sebesar 15,42 %. Unsur hara nitrogen yang terdekomposisi pada hari ke 90 yaitu stasiun I sebesar 2,69%, stasiun II sebesar 2,57 % dan stasiun III sebesar 2,75%. Kandungan unsur hara fosfor selama proses dekomposisi 90 hari yaitu stasiun I 0,02 %, stasiun II 0,02 % dan stasiun III 0,01 %.Mangroves produced litter that will undergo decomposition process which used as a source of nutrients for plants and also source of food for fish and important invertebrates. The purpose of this research is to measure the decomposition of Rhizophora apiculata leaf litter and to know the content of carbon (C), nitrogen (N) and phosphorus (P) nutrient in leaf litter of R. apiculata released during the decomposition process. The research was conducted from February to May 2017 in Bagan Asahan Village, Tanjungbalai District, Asahan Regency, North Sumatera Province. The method of this research used purposive sampling and determined three stations sampling based on observation of availability R. apiculata mangrove species. The result showed that decomposition rate of R. apiculata leaf on the 90 day at station I was 13,04, station II was 11,42, and station III was 10,24. The content of carbon nutrients during the 90 day decomposition process in station I was 16.24%, station II was 15.29% and station III was 15.42%. Nitrogen nutrient elements decomposed on the 90 day were station I was 2.69%, station II was 2.57% and station III was 2.75%. Phosphorus nutrient content during 90 day decomposition process was 0,02% for station I, 0,02% for station II and 0,01% for station III.

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