Articles

Found 26 Documents
Search

HUBUNGAN ANTARA KETERSEDIAAN CAHAYA MATAHARI DAN KONSENTRASI PIGMEN FOTOSINTETIK DI PERAIRAN SELAT BALI Fauziah, Anna; Bengen, Dietriech G.; Kawaroe, Mujizat; Effendi, Hefni; Krisanti, Majariana
Jurnal Ilmu dan Teknologi Kelautan Tropis Vol. 11 No. 1 (2019): Jurnal Ilmu dan Teknologi Kelautan Tropis
Publisher : Department of Marine Science and Technology, Faculty of Fisheries and Marine Science, IPB University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (821.671 KB) | DOI: 10.29244/jitkt.v11i1.23108

Abstract

ABSTRAKCahaya matahari merupakan salah satu faktor lingkungan terpenting baik secara langsung maupun tidak langsung bagi organisme fotosintetik perairan dalam menyediakan energi untuk diubah menjadi energi kimia dengan bantuan klorofil. Penelitian ini bertujuan untuk mengkaji hubungan antara ketersediaan cahaya matahari  dan konsentrasi pigmen fotosintetik di Perairan Selat Bali. Penelitian dilaksanakan pada pagi, siang dan sore hari pada lima stasiun penelitian di Perairan Selat Bali. Analisis korelasi kanonik digunakan untuk mengetahui hubungan antara ketersediaan cahaya matahari dan pembentukan pigmen fotosintetik. Hasil penelitian menunjukkan bahwa intensitas cahaya matahari (Y2) lebih berpengaruh terhadap pembentukan pigmen klorofil-b (Y1) dengan korelasi kanonik sebesar 0,4512 bilamana dibandingkan dengan pembentukan pigmen klorofil-a (Y1) dengan nilai korelasi sebesar 0,3982. Semakin tinggi pembentukan pigmen klorofil-b (Y1) dapat meningkatkan pembentukan pigmen karotenoid (Y1) secara signifikan dengan nilai korelasi kanonik sebesar 0,7419. Kesimpulan dari hasil ini, bahwa pigmen klorofil-b dan pigmen karotenoid akan terbentuk secara optimum pada intensitas cahaya rendah. ABSTRACTSunlight is one of the most important environmental factors both directly and indirectly for  photosynthetic organisms in providing energy to be converted into chemical energy with the help of chlorophyll. This study aims to examine the relationship between the availability of sunlight and the concentration of photosynthetic pigments in Bali Strait waters. The study was conducted in the morning, midday and afternoon at five research stations in the Bali Strait waters. Canonical correlation analysis was used to determine the relationship between sunlight availability and photosynthetic pigment formation. The results showed that the intensity of sunlight (Y2) had more influence on the formation of chlorophyll-b (Y1) pigments with canonical correlation of 0.4512 when compared with the formation of chlorophyll-a (Y1) pigment with a correlation value of 0.3982. The higher formation of chlorophyll-b (Y1) pigments can significantly increase the formation of carotenoid pigments (Y1) with canonical correlation values of 0.7419. From these results it can be concluded that chlorophyll-b pigments and carotenoid pigments will be formed optimally at low light intensities.
DAYA DUKUNG LINGKUNGAN PERAIRAN TELUK EKAS UNTUK PENGEMBANGAN KEGIATAN BUDIDAYA IKAN KERAPU DALAM KARAM BA JARING APUNG Krisanti, Majariana; Imran, Zulhamsyah
Jurnal Ilmu Pertanian Indonesia Vol. 11 No. 2 (2006): Jurnal Ilmu Pertanian Indonesia
Publisher : Institut Pertanian Bogor

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1240.128 KB)

Abstract

Grouper net cages culture in Ekas Bay, East Lombok, Nusa Tenggara Barat were carried out for public income improvement. The net cages culture also potentially waste generate that can be harmful for those activity itself. Waste potential study from net cages culture was conducted to obtain information about Ekas Bay carrying capacity for culture activity. The information consists of physical and chemical properties of water (salinity, water temperature, dissolved oxygen, pH, ammonia, nitrite, nitrate, turbidity, and depth) as primary and secondary data. According to ammonia and nitrate concentration, the net cages culture activities could not suit the carrying capacity of Ekas Bay. The cage culture activity should be organize therefore can be economically and ecologically profitable furthermore ecologically sustainable.
Perbandingan Kelimpahan Larva Chironomidae di Dua Danau Berbeda di Provinsi Jambi Farhani, Siti Anindita; Wardiatno, Yusli; Krisanti, Majariana
Jurnal Ilmu Pertanian Indonesia Vol. 19 No. 3 (2014): Jurnal Ilmu Pertanian Indonesia
Publisher : Institut Pertanian Bogor

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (931.652 KB)

Abstract

This research was conducted at two different lakes in Jambi Province (Lake Sipin and Lake Teluk) to compare abundance of aquatic insect larvae (family: Chironomidae). Lake Sipin located close by the settlement and got many influences from anthropogenic activities. However, Lake Teluk got less anthropogenic disturbance. Both lakes have difference plants cover. The area around Lake Sipin was more open compared to Lake Teluk and it caused low transparency level in Lake Sipin. The transparency level of Lake Sipin was 58.62 cm whereas transparency level of Lake Teluk was 70.29 cm. The difference of this transparency level influenced Chironomidae Larvae abundance that was encountered. Larvae abundance which was found in Lake Sipin was 49 ind/m2, while larvae abundance of Lake Teluk was 374 ind/m2. The result showed that water transparency level, water colors and vegetation affected abundance of Chironomidae larvae.
Struktur komunitas tiram dagingdi perairan estuaria Kuala Gigieng, Kabupaten Aceh Besar, Provinsi Aceh Octavina, Chitra; Yulianda, Fredinan; Krisanti, Majariana
DEPIK Jurnal Ilmu-Ilmu Perairan, Pesisir dan Perikanan Vol 3, No 2 (2014): August 2014
Publisher : Faculty of Marine and Fisheries, Syiah Kuala University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (837.36 KB) | DOI: 10.13170/depik.3.2.1469

Abstract

Abstract. The oysters (Ostreidae) isone of economically important bivalves for urban community in Kuala Gigieng, Aceh Besar District. Presently, the quality and quantity of oyster is decreased over the years by intensive exploitation and water pollution. Therefore, theobjective of the present study was to analyze population structure and habitat condition of oystersin estuary area of Kuala Gigieng, Aceh Besar District, Aceh Province. The sampling was conducted at three locations during August to September 2013. The sampling locations were determined based on anthropogenic activities. A total of two genus of oysters were recorded during the study i.e Crossastrea with four species (C. gigas, C. iridescens, C. angulata, C. virginica) and and Ostrea edulis with one species (O. edulis). The highest density ( 39 ind m-2)of oysters were found at undisturbed and less pressure environment. The distribution pattern of Ostreidae in the Kuala Gigieng water was clustered where frequency of occurrence wasin small class size of 24 mm to 37.20 mm with optimum harvested of 32.27 mm. The growth of the oysters was relatively slow as shown by the maximum length (Lmaks) that can only reach 37.91-72.81 mm within 0 to 3.42 years. Generally, oysters population structure and habitat conditions in Kuala Gigieng Water was declined over the yeras. Therefore, it is a crucially needed to plan a management strategy for oysters with regulation on fishing, shellfish farming and waste disposal regulation to ensure the oysters population remains sustain.Keywords : Environment factors; fishing, growth; Kuala Gigieng; Oyster; population structureAbstrak. Tiram daging (Ostreidae) merupakan salah satu kerang yang memiliki  nilai ekonomi penting bagi masyarakat Kuala Gigieng. Namun, kualitas dan kuantitas tiram menurun akibat eksploitasi dan pencemaran perairan. Penelitian ini bertujuan untuk menganalisis struktur populasi dan kondisi habitat tiram di perairan estuaria Kuala Gigieng Kabupaten Aceh Besar, Provinsi Aceh. Sampling dilakukan pada tiga lokasi selama bulan Agustus hingga September 2013.Hasil penelitian menunjukkan bahwa terdapat dua genus tiram di perairan Kuala Gigieng yaitu Crassostrea dan Ostrea dengan total 5 spesies (C. gigas, C. iridescens, C. angulata, C. virginica and O. edulis). Kepadatan tertinggi berada pada lokasi yang tekanan penangkapan dan lingkungannya yang rendah. Pola penyebaran tiram daging di Kuala Gigieng cenderung mengelompok. Frekuensi ukuran selang kelas tiram terbanyak yang ditemukan yaitu 24-37,20 mm dengan ukuran layak tangkap yaitu 32,27 mm. Pertumbuhan tiram daging di Kuala Gigieng tergolong lambat, hal ini ditunjukkan dengan panjang maksimal (Lmaks) yang mampu dicapai kerang ini hanya 37,91-72,81 mm dalam waktu 0-3,42 tahun. secara keseluruhan, struktur populasi tiram daging dan kondisi habitat di Kuala Gigieng mulai menurun. Oleh karen itu, diperluka pengaturan pengelolaan sumberdaya tiram dengan melakukan pengaturan penangkapan, budidaya tiram, dan pembuangan limbah agar sumberdaya tiram di Kuala Gigieng tetap lestari.Kata kunci : Faktor lingkungan; Kuala Gigieng; penangkapan; pertumbuhan; struktur populasi; tiram daging,
MORPHOLOGICAL CHARACTER AND MOLECULAR IDENTIFICATION WITH COI GENE MARKER OF HORSESHOE CRABS (Tachypleus gigas) AT COASTAL WATERS OF NORTHERN JAVA ISLAND Meilana, Lusita; Wardiatno, Yusli; Butet, Nurlisa A; Krisanti, Majariana
Jurnal Ilmu dan Teknologi Kelautan Tropis Vol. 8 No. 1 (2016): Elektronik Jurnal Ilmu dan Teknologi Kelautan Tropis
Publisher : Department of Marine Science and Technology, Faculty of Fisheries and Marine Science, IPB University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (219.999 KB) | DOI: 10.29244/jitkt.v8i1.12651

Abstract

The existence of horseshoe crabs Tachypleus gigas is currently on the threatened condition and its population status is also unclear. The objectives of this research were to asses the horseshoe crabs morphological characters and to identify based on molecular marker of Cytochrome Oxydase Subunit I (COI) gene. The samples were collected from five locations (Segara Menyan Subang, Ujung Kulon Banten, Tambak Lorok Semarang, Betah Walang Demak, and Kenjeran Surabaya) in October 2014 until June 2015. A total of 27 parameters for 62 individuals were used to determine connectivity and character identifier among populations. Data were tested using non-parametric analysis. While, the 5 individuals from each sites were used for molecular analysis including several stages of the DNA extraction, DNA electrophoresis, amplification and visualization of DNA fragments, and DNA sequencing. The results obtained based on morphological characters that T. gigas of Surabaya formed a unique group due to its body size (X1-X2 and X4-X16) was larger than the other 5 body parts (X22, X23, X26-X28) of Semarang, Demak, Subang, and Banten. According to molecular results, there were 650 bp conserve nucleotide sequences. Analysis using software MEGA 5.0 showed that there were 73 existence of specific nucleotide sites that can be used to distinguishes between T. gigas in-groups  and out-groups (T. gigas from Central Arabian Sea, T. tridentatus from Sweden, and Carcinoscorpius rotundicauda from USA).Keywords: horseshoe crabs, Java coast, morphology, identification molecular, CO1 gene.
TOKSISITAS AKUT (LC50) SERBUK BOR (Cuttings) TERHADAP Daphnia sp. Effendi, Hefni; Emawan, Aditya Herry; Wardiatno, Yusli; Krisanti, Majariana
Bumi Lestari Journal of Environment Vol 12 No 2 (2012)
Publisher : Environmental Research Center (PPLH) of Udayana University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (41.149 KB)

Abstract

Research was aimed at determining toxicity of drilling cuttings towards Daphnia, revealed in LC50 96 hours, meaning that cuttings concentration cause 50% population of Daphnia within the period of 96 hour observation. LC50 96 hour is utilized for preliminary strategy of managing drilling cuttings. Static test was applied at the main bioassay experiment.  Mortality was as an indicator of toxicity.  Bioassay experiment refers to US-EPA (1991, 1996, 2002); Ziehl and Schmitt (2000).  Mortality and water quality fluctuation were observed at hours 2, 4, 6, 8, 24, 48, 72, and 96. Determination of LC50 96 hour was carried out by the method of Probit Analysis.  Manual count and software EPA Probit Analysis Version 1.5 were applied. LC50 96 hours cuttings towards Daphnia is 22.177 - 22,208 ppm.  This indicates that cuttings has almost non-toxic characteristic.  However, disposal of these cuttings needs oil content measurement.  If oil content meets regulation (? 10%), cuttings is allowed to be discharged to the surrounding terrestrial environment.
Estimasi limbah organik dan daya dukung perairan dalam upaya pengelolaan terumbu karang di perairan Pulau Semak Daun Kepulauan Seribu Mansur, Wan; Mukhlis Kamal, M.; Krisanti, Majariana
DEPIK Jurnal Ilmu-Ilmu Perairan, Pesisir dan Perikanan Vol 2, No 3 (2013): December 2013
Publisher : Faculty of Marine and Fisheries, Syiah Kuala University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (483.924 KB) | DOI: 10.13170/depik.2.3.973

Abstract

Abstract. Sea ranching activity is highly depending on the ecology of coral reef condition. Floating cages activities in Semak Daun island has potential to produce waste along with organic waste from other anthropogenic activities in land and its will lead to eutrophication causing degradation of coral reefs. This study was conducted from May to July 2013. A survey method was used to obtain primary data. Data sets also supported by secondary data. Waste loads estimation of net aquaculture that enter the waters was 1178.1 Kg/ton of fish production (N 243.9 Kg/ton of fish and P 54.1 Kg/ton of fish). Estimated of anthropogenic waste load around the Semak Daun island was 4167 Kg N and 1738.8 Kg P. Based on N load, the carrying capacity of Semak Daun Island for grouper floating cages was 32 unit (192 raft) or 2 ha of 9.99 ha area that appropriate for floating cage activities. In addition, based on dissolved oxygen, the carrying capacity was 28 units (168 raft) or 1.6 Ha of 9.99 Ha area that appropriate for floating cage activities. Keywords: Sea Ranching; Organic waste; Carrying capacity; Semak Daun Island. Abstrak. Kegiatan Sea ranching sangat tergantung kondisi ekologi terutama ekositem terumbu karang. Dengan adanya aktivitas keramba jaring apung yang terdapat di perairan Pulau Semak Daun memiliki potensi untuk menghasilkan limbah pakan bersama dengan limbah organik yang berasal dari berbagai kegiatan di darat dan apabila tidak terkendali dengan baik akan menyebabkan terjadinya eutrofikasi  sehingga menyebabkan degradasi terumbu karang. Penelitian ini dilaksanakan pada bulan Mei sampai Juli 2013. Metode yang digunakan dalam penelitian ini adalah metode survey. Data yang dikumpulkan meliputi data primer dan data sekunder. Menggunakan Analisis dilakukan terhadap estimasi limbah organik dan analisis daya dukung perairan. Hasil penelitian menunjukkan estimasi beban limbah budidaya jaring apung yang masuk ke perairan Pulau Semak Daun yaitu sebesar 1.178,1 Kg /ton ikan produksi (N 243,9 Kg/ton ikan dan P 54,1 Kg/ton ikan). Estimasi limbah antropogenik dari daratan sekitar pulau Semak Daun diperoleh 4.167 Kg N dan 1.738,8 Kg P. Berdasarkan pendekatan beban limbah N, daya dukung lingkungan perairan Pulau Semak Daun untuk pengembangan KJA ikan kerapu adalah 32 unit (192 petak KJA) atau 2 ha dari 9,99 ha luasan yang sesuai untuk kegiatan KJA. Berdasarkan ketersediaan oksigen terlarut, daya dukung perairan diperoleh 28 unit (168 petak KJA) atau 1,6 ha dari 9,99 ha luasan yang sesuai untuk KJA.Kata Kunci :  Sea Ranching; Limbah Organik; Daya dukung perairan; Pulau Semak Daun
LINK OF Pharella acutidens ABUNDANCE AND MANGROVE HABITAT IN CEMPI BAY, DOMPU REGENCY, WEST NUSA TENGGAR Dermawan, Awan; Setyobudiandi, Isdradjat; Krisanti, Majariana
Jurnal Ilmu dan Teknologi Kelautan Tropis Vol. 8 No. 2 (2016): Elektronik Jurnal Ilmu dan Teknologi Kelautan Tropis
Publisher : Department of Marine Science and Technology, Faculty of Fisheries and Marine Science, IPB University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (447.242 KB) | DOI: 10.29244/jitkt.v8i2.15821

Abstract

Pharella acutidens clam is a bivalve lives in mangrove ecosystem substrate, that is one of protein source for Dompu’s people. the existence of pharella acutidens in Cempi Bay, Dompu begin difficult to collect due to mangrove area has been reduced by result of land conversion from mangrove ekosistem area to estuary aquaculture pond and mangrove timber exploitation by local community as well as the Pharella acutidens routin exploitation, these factor may has influenced the existence of Pharella acutidens clam in the Cempi Bay mangrove ecosystem. This study aims to determine the condition of the Pharella acutidens clams located in the mangrove ecosystem Cempi bay, which in is an abundance on different conditions mangrove vegetation an abundance of Pharella acutidens clams tended more on high density and high basal area sites as well as the size of the clams. Varied habitats, from the density of 1.333 trees/ha up to 3.300 trees/ha, the basal area and the diverse species of mangrove, making this study an interesting thing  This journal is part of the research that explains positive influence between total basal area of mangrove vegetation (∑Ci) and abundance of Pharella acutidens, by simple regression analysis. The result showed that total basal area of mangrove vegetation (∑Ci) positively influencing abundance of P. acutidens clams with equation y = 0,3038x + 3,887 and R2 = 0,9579.
Dinamika Spasial dan Temporal Struktur Komunitas Zooplankton di Teluk Jakarta Kadir, Masykhur Abdul; Damar, Ario; Krisanti, Majariana
Jurnal Ilmu Pertanian Indonesia Vol. 20 No. 3 (2015): Jurnal Ilmu Pertanian Indonesia
Publisher : Institut Pertanian Bogor

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (2094.515 KB) | DOI: 10.18343/jipi.20.3.247

Abstract

Study of spatial and temporal dynamics of zooplankton community structure in the Jakarta Bay. The purpose are analyzing the abundance, distribution, diversity, and dominance index with indicators of water quality spatial and temporal waters of Jakarta Bay. The research was conducted from July-October 2013. Sampling was done four times (July, August, September, and October). The water quality was analysed by Laboratory Productivity and Water Environment at Department of Resources Management, Faculty of Fisheries and Marine Sciences, Bogor Agricultural University. Zooplankton were analyzed using the method of enumeration (census SRC), in Micro Biology Laboratory Faculty. Based on the distribution patterns were its indicates that the landward dissolved oxygen (DO) is increasingly high, especially in August, September, and October, and increase the abundance of zooplankton as much as 1.3106 Ind/m3. DO with a high spatial concentration value reaches the range of 6.2-14.5 mg/L in Muara Marunda (Station 10), and increase the abundance of zooplankton as much as 5.1106 Ind/m3, with a majority composition of crustacea. Results of classification was diversity moderate, stable uniformity, and high dominance index.
Komunitas Makrozoobentos dan Akumulasi Kromium di Sungai Cimanuk Lama, Jawa Barat Gitarama, Arbi Mei; Krisanti, Majariana; Agungpriyono, Dewi Ratih
Jurnal Ilmu Pertanian Indonesia Vol. 21 No. 1 (2016): Jurnal Ilmu Pertanian Indonesia
Publisher : Institut Pertanian Bogor

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (601.419 KB) | DOI: 10.18343/jipi.21.1.48

Abstract

The residue of human activities and batik industrial waste water surrounding the river will be able to increase the accumulation of chromium and to disrupt macrozoobenthic communities in the river. The aims of this study was to assess the impact of human activities surrounding the river to the macrozoobenthic communities and the accumulation of chromium in Cimanuk Lama River, Indramayu District, West Java. The study has been conducted from AprilMay 2015 based on three times sampling at three different sampling stations. The result of this study shows that the chromium accumulated in the waters of all station still meet the standard quality ranging from 0,010-0,016 mg/l, but only station 1 fulfills the standard quality for chromium accumulated in the river sediment with the range of all stations was about 11,72-46,63 mg/kg. The results also show that the community index analysis describes the change of macrozoobenthic community at all stations caused by environmental pressure, especially at the station 2 which is indicated by the highest score of Family Biotic Index. The accumulation of the chromium in the waters and the change of macrozoobenthic community structure are mostly influenced by the use of the Cimanuk Lama river long for agricultural and fisheries activities, and also batik home industry.