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RASIO BIOMASA DAN KELIMPAHAN MAKROZOOBENTHOS SEBAGAI PENDUGA TINGKAT PENCEMARAN DI TELUK JAKARTA Yonvitner, .; Imran, Zulhamsyah
Jurnal Ilmu Pertanian Indonesia Vol. 11 No. 3 (2006): Jurnal Ilmu Pertanian Indonesia
Publisher : Institut Pertanian Bogor

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (210.862 KB)

Abstract

The monitoring technic  using  aquatic  organism  as bio indicator was  more  advance.    Monitoring of  water  quality conduct   with  biological indicator among   macrobentic biomass  and  green  mussel  population were  intensively used  by researcher. These research was consider  that  water  quality damage on Jakarta  bay might be identity with biomass analysis approach.   Benthic  organism used as sample  were  macrozoobenthos and green  mussel (Pema viridis).  Water  quality was analysed  using  Fsawb  (Fish and Wild  Life Method) index  from  ott. 1979, then  for  biomass  model  was analysed  by dominant cumulative curve.   Result  of this  research  showed  that  Fsawl index  average  was 64.99, that  its  value  was unappropriate for fishes.   The analysis  of abundance and biomass  comparison index  was tend  to increase  the  density, while the biomass was decrease.   The results  indicate that  water  body  was  already  polluted.  The si:: nificant  impact for  mussel of  pollution was appear on water column at 2 m under of sea level.
MANAGEMENT OF MANGROVE ECOSYSTEM POTENCY IN KUALA LANGSA, ACEH Zurba, Nabil; Effendi, Hefni; Yonvitner, .
Jurnal Ilmu dan Teknologi Kelautan Tropis Vol. 9 No. 1 (2017): 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 | DOI: 10.29244/jitkt.v9i1.17942

Abstract

The potency of mangrove ecosystems can be a provider of economic resources, preserving the ecological environment and providing environmental services. The existence of mangroves in Kuala Langsa is important to study about the economic potential, the potential of carbon sequestration in the form of biomass, coastal tourism potential and social potential of society in support of its development efforts. The result of the research shows that the potential existence of mangrove ecosystem to fishery sector is Rp. 657.563.000 / year, carbon sequestration potential in the form of biomass of 180.365 ton /year, with the economic value of carbon trade of Rp. 2.344.745.000/year, economic potential of coastal tourism reached Rp 22,921,107,253/year. Overall, the estimated total potential of existing mangrove ecosystems in Kuala Langsa is Rp. 29.923.415.253/year. To manage these potentials, a conservation strategy is required, performance improvement of customary institutions and the existence of such management institutions must be continuously strengthened.                                                                                                   Keywords:  institutional, Kuala Langsa, mangrove, potency, strategic                        management 
CARRYING CAPACITY OF EAST BEACH OF BULUKUMBA REGENCY FOR MARINE TOURISM ACTIVITIES Wahyuni, Andi Panca; Yonvitner, .; Setyobudiandi, Isdradjad
Jurnal Ilmu dan Teknologi Kelautan Tropis Vol. 9 No. 1 (2017): 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 | DOI: 10.29244/jitkt.v9i1.17924

Abstract

The purpose of the study was to assess the carrying capacity of  East Beach of Bulukumba Regency for tourism activities. East Beach was obtained three marine tourism activities namely beach tourism of recreation, snorkeling and diving. Coastal tonamelyurism/recreation categories according to the total length area that utilized around 1.696  m can accommodate 68 people/day, snorkeling tourism around  71.605 m² can accommodate 286 people/day and diving tourism around 98.534  m²  is able to accommodate 394 people/day. Thus the total tourist that can fit to the overall tourism activity around 748 people/day. Keywords : carrying capacity, marine tourism, east beach, Bulukumba regency
PENGELOLAAN SUMBER DAYA PERIKANAN BANGGAI CARDINALFISH (PTERAPOGON KAUDERNI, KOUMANS 1933) DENGAN PENDEKATAN EKOSISTEM (STUDI KASUS PULAU BANGGAI KABUPATEN BANGGAI LAUT) Adel, Yeldi; Yonvitner, .; Rahardjo, Muhammad Fadjar
Jurnal Ilmu Pertanian Indonesia Vol. 21 No. 3 (2016): Jurnal Ilmu Pertanian Indonesia
Publisher : Institut Pertanian Bogor

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1301.4 KB) | DOI: 10.18343/jipi.21.3.186

Abstract

The Banggai cardinalfish (Pterapogon kauderni) is endemic to the Banggai Archipelago. The conservation status of Pterapogon kauderni in the IUCN Red List of Threatened Species is Endangered, Pterapogon kauderni is considered to be threatened with extinction due to excessive exploitation as well as threats to it?s habitat in shallow coastal waters of 0-5 m depth. The aim of this research was to evaluate this fisheries resource using ecosystem-based indicators and to formulate fisheries management measures using an ecosystem-based approach. The six domains used in this evaluation were the fisheries resource domain, habitat and ecosystem, fishing technology, social, economic, and institutional, using a specific set of indicators for each domain. The evaluation produced the following overall, mean, and highest indicator values and domain categories; 3.226.40, 2.33 and 4.204.12 for the fisheries resource domain, poor category; 4.020.80, 2.17, 5.282.36 for the habitat and ecosystem domain, average category; 4.000, 2.00, 6.000 for the fishing technology domain, average category; 6.685, 2.33, 8.505 for the social domain, category; 2.001.74, 1.50 and 3.005.17 for the economic domain, poor category; and 3.041.38, 2.17, 4.564.12 for the institutional domain, average category
DAYA DUKUNG OPTIMUM BERBASIS POLA TATA GUNA LAHAN PESISIR DI MUARA GEMBONG KABUPATEN BEKASI Oktaviani, Shabrina; Yonvitner, .; Imran, Zulhamsyah
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 | DOI: 10.29244/jitkt.v11i1.21600

Abstract

ABSTRAKPerubahan penggunaan lahan yang terjadi di Pesisir Kecamatan Muara Gembong telah mempengaruhi daya dukung lahan bagi penduduk setempat. Tujuan dari penelitian ini adalah untuk mengidentifikasi pola perubahan tata guna lahan saat ini di Kecamatan Muara Gembong, menganalisis tapak ekologi (ecological footprint) pemanfaatan ruang bagi masyarakat pesisir berdasarkan pola penggunaan lahan yang dikembangkan di Kecamatan Muara Gembong, serta menghitung daya dukung optimal pemanfaatan lahan wilayah pesisir kecamatan Muara Gembong. Analisis interpretasi citra digunakan untuk mengidentifikasi pola penggunaan lahan, sedangkan daya dukung dikaji melalui pendekatan Analisis Ecological Footprint (EF). Hasilnya menunjukkan bahwa penggunaan lahan di Muara Gembong didominasi oleh penggunaan lahan tambak (7.344 ha), sedangkan kategori penggunaan lahan yang paling sedikit di Muara Gembong adalah lahan mangrove (379 ha) dan ladang (372 ha). Nilai ecological footprint  yang paling tinggi adalah perairan pesisir (2,95 ha/kapita), sedangkan EF terendah adalah lahan mangrove (10,09 x 10-4 ha/kapita). Hal ini menjadikan daya dukung lahan mangrove menjadi yang paling tinggi, sebaliknya daya dukung lahan yang paling rendah adalah daya dukung perairan pesisir. ABSTRACTLand use change which occurred at coastal of Muara Gembong has been affected land carrying capacity for the population. Aims of this study are identifying the current pattern of land use change in Muara Gembong, analyzing the ecological footprint of space utilization for coastal communities based on land use patterns developed in Muara Gembong and, calculate the optimal land used carrying capacity in the coastal of Muara Gembong. Analysis of image interpretation was used to identify land use pattern, while the carrying capacity was assessed through ecological footprint analysis approach. The results were shown that land use in Muara Gembong was dominated by fish pond (7,344 ha) while the least land use category was mangrove (379 ha) and farm (372 ha). Coastal waters was the highest ecological footprint (EF) value (2.95 ha cap-1) while the lowest EF was mangrove (0.001009 ha cap-1). This makes the carrying capacity of mangrove to be the highest otherwise the lowest carrying capacity was the carrying capacity of coastal waters.
BIOLOGI REPRODUKSI IKAN BELIDA (NOTOPTERUS NOTOPTERUS PALLAS, 1769) DI KOLONG-BENDUNGAN SIMPUR, PULAU BANGKA Gustomi, Andi; Sulistiono, .; Yonvitner, .
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 (669.663 KB) | DOI: 10.18343/jipi.21.1.56

Abstract

The knowledge of fish reproduction is the most important in freshwater management continously. The research was done from February-July 2013, was aiming to describe information on reproductive aspects of belida fishes (Notopterus notopterus),i.e. sex ratio, gonado somatic stages, gonado somatic index, first size of maturity, fecundity, and spawning type. The fish Samples was taken by gill net which had many sizes such as 2, 2.5, 3, and 4 cm. Each gill net has length 30 m and width 2 m. Belida fishes have caught during research amounted 497 ind, which consisted of: 237 male and 260 female. Sex ratio male and female fish were relatively balance. The maturity gonad of male fish is faster than female fish. Featherback do spawn every month for each observation during the research. The spawning type of Featherback is partial pattern (step by step). The first size of maturity gonad from male fish was in length 135 mm and female fish was in length 162 mm. Fecundity of Featherback was in range 1.051-6.057 eggs. Fecundity is not influenced by length or weight body. For the sake to keep Featherback population needed a regulation, such as: the mesh size regulation of gillnet have to 30 mm or equal with 1.5 inci.
COMMUNITY STRUCTURE OF GROUPER FISH (SERRANIDAE) LANDED IN PEUKAN BADA SUBDISTRICT, ACEH PROVINCE Astuti, Rika; Yonvitner, .; Kamal, M. Mukhlis
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 | DOI: 10.29244/jitkt.v8i1.12497

Abstract

ABSTRACTInformation on important and economic grouper fish (Serranidae family) in Peukan Bada waters, Province of Aceh is very limited. This objecives of this research were to determine spatial and temporal variabilities in species composition and community structure of grouper landed in Peukan Bada, Aceh Besar District. The research was conducted using survey method during February to June 2015 on three fish landing sites i.e., Ujong Pancu, Lamtengoh, and Lamteh. The groupers were caught by using handline. The landed fishes were therefore counted and identified up to species level. The data were also analyzed based on taxonomic information and individual number of each species, community structure using the diversity index (H?), eveness (E), and dominance (D). The results obtained 835 individual, 21 species of grouper belong to 4 genera (Aethaloperca, Cephalopholis, Epinephelus dan Variola). Based on species, Epinephelus fasciatus and Cephalopholis sonnerati were the most grouper fishes in the region.  Based on community structure, diversity value (H?) in Lam-tengoh was higher than that in Ujong Pancu and Lamteh. Total grouper fish catches were not significantly different (P>0,05) among the three region. Meanwhile, total grouper fish cacthes were significantly different between seasons (p<0,05). The diversity species variation during five months of observation was affected by the differences in catches area, the condition of aquatic enviroment, and oceanographic condition.Keywords: Groupers, Peukan Bada, species composition, community structure
WATERS CARRYING CAPACITY FOR DEVELOPMENT OF SEAWEED CULTURE OF EUCHEUMA COTTONII IN LUWU AND PALOPO DISTRICTS, BONE BAY, SOUTH SULAWESI Waluyo, .; Yonvitner, .; Riani, Etty; Arifin, Taslim
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 | DOI: 10.29244/jitkt.v8i2.15802

Abstract

In seaweed Eucheuma cottonii cultures, a water carrying capacity is an important factor to optimize the seaweed culture. Carrying capacity can be determined by an ecological footprint production (EFp) analysis. This research was conducted in May 2015 (1st transitional season) and September 2015 (2nd transitional season) in Luwu and Palopo distircts, South Sulawesi. Map and land use were analyzed using GIS (Geographic Information Systems). The result showed that the ecological foot-print production (EFP) in Luwu waters was 67.88 ton/capita/year or equivalent to 235,823.93 tons/ year. However, based on the analysis of the water availability for seaweed was 59,781.79 hectares, it can produce seaweed (biocapacity) for 1,437,779.60 tons/year and the number of farmers that allows for use the waters is 21,432 capita. The ecological footprint  production (EFp) in Palopo waters is 3.08 ton/capita/year, or equivalent to 4,589.99 tons/year. Water availability analysis is 1,771. 41 hectares are able to produce seaweed (biocapacity) for  18,287.46 ton/year and the number of far-mers that allows for use the waters is 635 farmers capita. The results comparison between biocapa-ci-ty and ecological footprint, ecological status for  Luwu and Palopo waters are still in sustainable use.
BIODIVERSITY AND ABUNDANCE OF DEMERSAL FISHS STOCK IN TAMBELAN WATER, NATUNA SEA Fahmi, .; Yonvitner, .
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 | DOI: 10.29244/jitkt.v8i2.15807

Abstract

Understanding on fish diversity is essential for fish stock conservation specifically in Tambelan Island waters with a high fish diversity. This research was conducted in November 2010 at 6 sampling site around Tambelan Island. Samples were taken using trawl gear within sweeping technique. The para-meters of collected data were kind of species, number of fish, total length, and total weight. Data analyses were stock abundance (based on time trawling), diversity, richness, equity, and similarity between site sampling. The total fishes that were caugth were 1.224 individual that consisted of 105 species and 44 family of fishes. Total weight of sample was 55.3 kg, with the average stock abundance 0.27 kg/hour. Fishes catch composition were Apogonidae family 11,4%, Mulliidae family 35.7%, Nemipteridae family 16.3%, and Lutjanidae family 7,7%.  Richness value index ranged of 1862 ?3.121. Equitability index ranged of 0.329 ? 0.576.  Similarity index for station 3 and 6 was at 33.89% level; for station 1, 4, and 5 was at 20.31 % level,  and for station 4 and 5 was at 45,30% level from the maximum value of 100%.
VARIABILITY OF CARAPACE WIDTH SIZE AND ABUNDANCE OF BLUE SWIMMING CRABS (PORTUNUS PELAGICUS LINNAEUS) IN PATI WATERS Nugraheni, Dyah Ika; Fahrudin, Achmad; Yonvitner, .
Jurnal Ilmu dan Teknologi Kelautan Tropis Vol. 7 No. 2 (2015): 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 | DOI: 10.29244/jitkt.v7i2.10996

Abstract

Fishing effort enhancement would put pressure on blue swimming crab resources and its ecosystem. The objective of this study was to determine the spatial distribution based on the size of the carapace width (CW), abundance, temperature, salinity, depth, and fishing intensity in Pati waters which was divided into two zones (zones 1=nearshore, zone 2=offshore). The result showed that the average of carapace width in zone 1 to zone 2 was significantly different (p <0.05), as well as between males and females. Average number of individual (abundance) was significantly different according to fishing areas and sex (p <0.05). The average of water temperature in zone 1 was higher than in zone 2, salinity in zone 1 was smaller than in zone 2, and the water depth in zone 1 was shallower than in zone 2. The higher the crab catch intensity leaded to the smaller the abundance and size of carapace width. Alternative management strategies were proposed such as to divert fishing grounds from coastal waters to offshore during low productivity season, to uphold rules on minimum legal size for catching (Lm = 107 mm),  to release of berried females catch, and to reduce accretion rate of gear and fishing fleet mainly in the coastal zone waters.Keywords:  blue swimming crab, carapace widht (CW), abundance, intensity of fishing