scholarly journals STATUS STOK IKAN KARANG TARGET DI KAWASAN KONSERVASI TAMAN NASIONAL KARIMUNJAWA

2016 ◽  
Vol 22 (1) ◽  
pp. 9 ◽  
Author(s):  
Ernik Yuliana ◽  
Mennofatria Boer ◽  
Achmad Fahrudin ◽  
M Mukhlis Kamal ◽  
Efin Muttaqin
Keyword(s):  
Reef Fish ◽  
Secondary Data ◽  
Reef Fishes ◽  
Fish Mortality ◽  
Human Consumption ◽  
Fish Length ◽  
Catch Per Unit Effort ◽  
Central Java ◽  
The Status ◽  
Fish Catch

<p>Sumber daya ikan karang di Taman Nasional Karimunjawa (TNKJ) mengalami tekanan eksploitasi seiring dengan peningkatan permintaan sumber daya ikan untuk memenuhi kebutuhan konsumsi ikan. Tulisan ini bertujuan untuk menganalisis status stok ikan karang target di TNKJ. Penelitian dilakukan di TNKJ Kabupaten Jepara, Provinsi Jawa Tengah, pada April-Agustus 2015. Pengumpulan data menggunakan metode survei dan observasi, mencakup data primer dan sekunder. Empat jenis ikan karang dipilih untuk mewakili ikan karang, yaitu ekor kuning, pisang-pisang, sunu macan, dan jenggot. Hasil tangkapan dianalisis dengan CPUE dan indeks musim. Mortalitas diduga dengan kurva penangkapan yang dilinierkan berdasarkan data komposisi panjang ikan. Penilaian status stok menggunakan metode analitik dengan menghitung laju eksploitasi. Hasil penelitian menunjukkan bahwa CPUE ikan karang mempunyai tren yang meningkat. Ikan karang secara agregat tersedia pada setiap bulan sepanjang tahun, tidak ada musim puncak penangkapan dan musim paceklik. Ikan pisang-pisang dan sunu macan telah dieksploitasi melebihi batas kelestariannya, yaitu 114,50% dan 154,00%.</p><p><em><br /></em></p><p><em>Coral reef fish resources in Karimunjawa National Park (KNP) are under exploitation pressure with increasing demand of fish for human consumption. This study is aimed to analyze the status of target reef fishes in KNP. Field survey was conducted in KNP District of Jepara, Central Java, in April-August 2015. Data consists of primary and secondary data was obtained by using survey and observation method.    Four species of reef fishes were chosen to represent reef fish, namely yellow tail fusilier (Caesio cuning), blue and gold fusilier (Caesio caerulaurea), highfin coral grouper (Plectropomus oligocanthus), and dash-and-dot goatfish (Parupeneus barberinus). Reef fish catch data was analyzed using catch per unit effort (CPUE) and seasonal index. Fish mortality was predicted by catch curve based on length-converted. The results indicate increasing trend of reef fishes CPUE. Reef fishes in aggregate are available every month in year-round and there is no seasonality trend. Fish length analysis reveals that status of blue and gold fusilier and highfin coral grouper have been exploited over maximum sustainable limit, with the rate of exploitation 114.50% and 154.00%, respectively. </em></p>

scholarly journals BIODIVERSITY OF REEF FISHES IN MARINE PROTECTED AREA OF KARIMUNJAWA NATIONAL PARK

2017 ◽  
Vol 9 (1) ◽  
pp. 29
Author(s):  
Ernik Yuliana ◽  
Mennofatria Boer ◽  
Achmad Fahrudin ◽  
M. Mukhlis Kamal
Keyword(s):  
Reef Fish ◽  
Protected Area ◽  
National Park ◽  
Marine Protected Area ◽  
Coral Cover ◽  
Secondary Data ◽  
Reef Fishes ◽  
Primary Data ◽  
The Third ◽  
Central Java

<p><em>Karimunjawa National Park (KNP) has a high diversity of coral reef and fish. This study is aimed to analyze the biodiversity of reef fish in KNP. Field survey was conducted in KNP, District of Jepara, Central Java, in April-Juni 2015. Primary data was obtained by using survey and observation method,   includes the number of reef fish individuals per family, coral cover, turbidity, total nitrogen (N), and PO<sub>4</sub>. Secondary data were obtained from KNP authority. Belt transect method was used for counting the number of reef fish individuals, while coral cover was measured using line intercept transect (LIT) method. Abundance and biomass of reef fishes were analyzed descriptively, followed by cluster analysis. The results indicated that the average of coral cover in 2015 was 44.70%. The highest coral cover was in Taka Malang with 65.65% and the lowest was in Nirwana with 35.45%. The reef fish’s abundance in 2015 was dominated by Pomacentridae (60.46%) with an abundance of 14,850 </em><em>no</em><em>/ha, the second position was Caesionidae (11.77%) with an abundance of 2,892 </em><em>no</em><em>/ha, the third was Scaridae (6.27%) with an abundance of 1,540 </em><em>no</em><em>/ha. The highest biomass in 2015 was Scaridae (122.33 kg/ha), the second order was Caesionidae (104.91 kg/ha), and the third was Serranidae (50.80 kg/ha). Reef fish biodiversity in KNP is considering properly maintained, as demonstrated by high abundance and biomass of fish families. </em></p><p><strong><em> </em></strong></p><strong><em>Keywords</em></strong><em>: biodiversity, reef fish, Karimunjawa, marine protected area</em>

scholarly journals BIODIVERSITY OF REEF FISHES IN MARINE PROTECTED AREA OF KARIMUNJAWA NATIONAL PARK

2017 ◽  
Vol 9 (1) ◽  
pp. 29-43
Author(s):  
Ernik Yuliana ◽  
Mennofatria Boer ◽  
Achmad Fahrudin ◽  
M. Mukhlis Kamal
Keyword(s):  
Reef Fish ◽  
Protected Area ◽  
National Park ◽  
Marine Protected Area ◽  
Coral Cover ◽  
Secondary Data ◽  
Reef Fishes ◽  
Primary Data ◽  
The Third ◽  
Central Java

Karimunjawa National Park (KNP) has a high diversity of coral reef and fish. This study is aimed to analyze the biodiversity of reef fish in KNP. Field survey was conducted in KNP, District of Jepara, Central Java, in April-Juni 2015. Primary data was obtained by using survey and observation method,   includes the number of reef fish individuals per family, coral cover, turbidity, total nitrogen (N), and PO4. Secondary data were obtained from KNP authority. Belt transect method was used for counting the number of reef fish individuals, while coral cover was measured using line intercept transect (LIT) method. Abundance and biomass of reef fishes were analyzed descriptively, followed by cluster analysis. The results indicated that the average of coral cover in 2015 was 44.70%. The highest coral cover was in Taka Malang with 65.65% and the lowest was in Nirwana with 35.45%. The reef fish’s abundance in 2015 was dominated by Pomacentridae (60.46%) with an abundance of 14,850 no/ha, the second position was Caesionidae (11.77%) with an abundance of 2,892 no/ha, the third was Scaridae (6.27%) with an abundance of 1,540 no/ha. The highest biomass in 2015 was Scaridae (122.33 kg/ha), the second order was Caesionidae (104.91 kg/ha), and the third was Serranidae (50.80 kg/ha). Reef fish biodiversity in KNP is considering properly maintained, as demonstrated by high abundance and biomass of fish families.  Keywords: biodiversity, reef fish, Karimunjawa, marine protected area

Comparison of Reef Fish Catch per Unit Effort and Total Mortality between the 1970s and 2005-2006 in Onslow Bay, North Carolina

2008 ◽  
Vol 137 (5) ◽  
pp. 1389-1405 ◽  
Author(s):  
Paul J. Rudershausen ◽  
Erik H. Williams ◽  
Jeffrey A. Buckel ◽  
Jennifer C. Potts ◽  
Charles S. Manooch
Keyword(s):  
North Carolina ◽  
Reef Fish ◽  
Total Mortality ◽  
Catch Per Unit Effort ◽  
Unit Effort ◽  
Fish Catch

scholarly journals Understanding the Rights of Wife in The Law Number 1 of 1974 About Marriage Among the Terrorist Wives in Central Java

2020 ◽  
Vol 8 (1) ◽  
Author(s):  
Rosdiana Rosdiana ◽  
Hotnidah Nasution
Keyword(s):  
Islamic Law ◽  
Secondary Data ◽  
Primary Data ◽  
Marriage Law ◽  
Positive Law ◽  
Central Java ◽  
Religious Doctrine ◽  
Library Research ◽  
The Status ◽  
The Law

AbstractThe terrorist or ex-terrorist wives in Solo have experienced diverse conditions after their husband officially becomes a terrorist prisoner who has been lived in jail. The Rights of Wife in Law No. 1 of 1974 about Marriage among terrorist wives in Solo have sharpened the analysis on how their level of perception of the wife’s rights that regulated by Law No. 10 of 1974. This study aims to reveal the reality of cases that took place with terrorist wives related to the fulfillment of their rights as a wife regulated by law, and to categorize their marital status related to the validity in a positive law (whether the marriage is registered or not in The Office of Religious Affairs (KUA)). Besides, this paper also wants to explore the terrorist wives' understanding who are legally married in KUA regarding their rights which are highly protected by the law. This research uses a qualitative method which aimed to find concepts and theories, and library research by applying the empirical or sociological legal approach. Data sources used are Primary Data, namely the terrorist prisoner’s wives in Solo, and secondary data from the Marriage Law (Law No. 1 of 1974), Compilation of Islamic Law (KHI), books, journals, articles, views of legal experts, and the results of other paper and writings related to the problems that become the subject in this research discussion. The descriptive data analysis method aims to figure out systematically, factually and accurately the facts about the understanding of terrorist wives related to their rights in the Marriage Law (Law No. 1 of 1974). After analyzing and interpreting the existing data, it can be concluded that the terrorist prisoner wives in Central Java have a fairly good understanding of their rights as wives regulated in Law No. 1 of 1974. If only there are rights that undermanned by them for the unfulfilled obligations by the husband, then it is caused by their sincerity attitude towards the husband status who becomes a prisoner. The religious doctrine that is strong enough makes the prisoner’s wife do not ask many of her rights, both physical and mental rights that are not well fulfilled. For them, the status of a husband to become a terrorist prisoner is a Shari reason which consequences must be accepted sincerely.Keywords: Understanding, wife's rights, Terrorist Prisoner’s Wives

scholarly journals Using ecosystem approach indicators for assessing the ecological status of reef fisheries management in a marine protected area

2019 ◽  
Vol 20 (7) ◽  
Author(s):  
ERNIK YULIANA ◽  
MENNOFATRIA BOER ◽  
ACHMAD FAHRUDIN ◽  
MOHAMMAD MUKHLIS KAMAL ◽  
SHINTA TRILESTARI PARDEDE
Keyword(s):  
Fisheries Management ◽  
Protected Area ◽  
Marine Protected Area ◽  
Ecological Status ◽  
Secondary Data ◽  
Ecosystem Approach ◽  
Central Java ◽  
Observation Methods ◽  
The Status ◽  
Tactical Decisions

Abstract. Yuliana E, Boer M, Fahrudin A, Kamal MM, Pardede ST. 2019. Using ecosystem approach indicators for assessing the ecological status of reef fisheries management in a marine protected area. Biodiversitas 20: 1802-1810.  The purpose of this study was to assess the status of reef fisheries management in a marine protected area base on ecosystem approach indicators and to determine the tactical decisions required to improve management. The study site was in Karimunjawa National Park (KNP) Jepara, Central Java, Indonesia. Data were collected using survey and observation methods and included both primary and secondary data. Coral fish, which were the object of the study was Caesio cuning, Caesio caerulaurea, Plectropomus oligacanthus, and Parupeneus barberinus. Determination of the status of each ecosystem approach indicator was conducted using the flag model. Tactical decisions were necessary to improve the status of management indicators. The results indicated that the ecological status of reef fisheries management of KNP is at a moderate level with an achievement value of 62.75% Tactical decisions are necessary to push the ten indicators to achieve a better level. Three indicators still received a poor status, and the remaining (seven indicators) were within the moderate status. Therefore, the three indicators that need to be improved quickly are fish abundance, fishing gear modification, and fishing capacity.

scholarly journals Reef fish communities are spooked by scuba surveys and may take hours to recover

PeerJ ◽  
2018 ◽  
Vol 6 ◽  
pp. e4886 ◽  
Author(s):  
Michael J. Emslie ◽  
Alistair J. Cheal ◽  
M. Aaron MacNeil ◽  
Ian R. Miller ◽  
Hugh P.A. Sweatman
Keyword(s):  
Species Richness ◽  
Reef Fish ◽  
Fish Assemblages ◽  
Ecological Monitoring ◽  
Reef Fishes ◽  
Fish Length ◽  
Initial Contact ◽  
Monitoring Programs ◽  
Species Of Conservation Concern ◽  
Initial Attraction

Ecological monitoring programs typically aim to detect changes in the abundance of species of conservation concern or which reflect system status. Coral reef fish assemblages are functionally important for reef health and these are most commonly monitored using underwater visual surveys (UVS) by divers. In addition to estimating numbers, most programs also collect estimates of fish lengths to allow calculation of biomass, an important determinant of a fish’s functional impact. However, diver surveys may be biased because fishes may either avoid or are attracted to divers and the process of estimating fish length could result in fish counts that differ from those made without length estimations. Here we investigated whether (1) general diver disturbance and (2) the additional task of estimating fish lengths affected estimates of reef fish abundance and species richness during UVS, and for how long. Initial estimates of abundance and species richness were significantly higher than those made on the same section of reef after diver disturbance. However, there was no evidence that estimating fish lengths at the same time as abundance resulted in counts different from those made when estimating abundance alone. Similarly, there was little consistent bias among observers. Estimates of the time for fish taxa that avoided divers after initial contact to return to initial levels of abundance varied from three to 17 h, with one group of exploited fishes showing initial attraction to divers that declined over the study period. Our finding that many reef fishes may disperse for such long periods after initial contact with divers suggests that monitoring programs should take great care to minimise diver disturbance prior to surveys.

Variable and spatially explicit response of fish larvae to the playback of local, continuous reef soundscapes

2020 ◽  
Vol 653 ◽  
pp. 131-151
Author(s):  
JJ Suca ◽  
A Lillis ◽  
IT Jones ◽  
MB Kaplan ◽  
AR Solow ◽  
...  
Keyword(s):  
Reef Fish ◽  
Larval Fish ◽  
Fish Larvae ◽  
Reef Fishes ◽  
Virgin Islands ◽  
Acoustic Environment ◽  
Us Virgin Islands ◽  
Fish Catch ◽  
Ecological Importance ◽  
Subsurface Light

Understanding the cues that drive larval fish settlement is critical for managing reef systems under stress. Reef sound is increasingly reported to influence fish recruitment, yet the physical and acoustic environment in which larval fish settle varies in space and time. Accordingly, testing potential settlement cues under different conditions is vital for understanding their ecological importance. We conducted 2 sets of field playback experiments in St. John, US Virgin Islands, one nearshore (10 m depth) and the second ‘offshore’ (25 m depth), to assess the effects of reef soundscape playback on settlement rates of multiple reef fish families. In each experiment, nightly currents were quantified and we replicated the diel soundscape cycle using high, low, and control (silent) amplitude recordings from nearby reefs. The first experiment revealed significant current-based, down-stream reduction in larval fish catches in subsurface light traps and a significant effect of increasing amplitude of reef playbacks on larval lizardfish (Synodontidae) catches. In the second, offshore experiment which had no current effect, increasing reef playback amplitude led to a significantly greater catch of parrotfish (Scaridae) larvae and decreased larval pelagic fish catch. Total reef fish larvae only showed attraction to reef playbacks at the most nearshore site. This work demonstrates that while sound can play a role in the settlement of certain reef fishes, responses are influenced by multiple factors, including larger-scale physical processes, underscoring the need to consider the scale of soundscape cues for reef fish settlement within an oceanographic context.

scholarly journals STATUS PENANGKAPAN IKAN HIAS DI KEPULAUAN SERIBU TAHUN 2007-2009 (The Status of Ornamental Reef Fish Catch in Seribu Islands (2007-2009))

2013 ◽  
Vol 2 (2) ◽  
pp. 155
Author(s):  
Idris Idris ◽  
E. Setyawan ◽  
A. Mardesyawati
Keyword(s):  
Reef Fish ◽  
Population Data ◽  
Fish Population ◽  
Ornamental Fish ◽  
Underwater Visual Census ◽  
Total Allowable Catch ◽  
The Status ◽  
Fish Catch ◽  
Reef Fish Species ◽  
Fish Trade

<p>Marine ornamental reef fish trade is a huge industry with trade value USD 200-350 million/ year. Seribu Islands, Jakarta is one of the main ornamental reef fish catch area in Indonesia. The aim of this study was to compare ornamental fishing activities with total allowable catch (TAC). Ornamental reef fish catch data were collected from fishermen annually within 2007-2009, while reef fish population data are collected using underwater visual census every two years. The results showed that the total catch of 18 marine ornamental reef fish species exceeded TAC in 2007. Then there were 22 species in 2008 and 17 species of marine ornamental fish in 2009 that their catches were more than TAC. In addition, fish that are always included in the ten highest caught fish within 3 years were Cryptocentrus cinctus, Pomacentrus alleni, Pterosynchiropus splendidus, Premnas biaculeatus, and Amphiprion ocellaris. Their catches exceeded TAC.</p><p><br /><strong>Key words:</strong> Marine ornamental fish, Seribu Islands, Total Allowable Catch (TAC)</p>

scholarly journals Evaluating the Effects of a Deep-Water Marine Protected Area a Decade After Closure: A Multifaceted Approach Reveals Equivocal Benefits to Reef Fish Populations

2021 ◽  
Vol 8 ◽  
Author(s):  
Brendan J. Runde ◽  
Jeffrey A. Buckel ◽  
Paul J. Rudershausen ◽  
Warren A. Mitchell ◽  
Erik Ebert ◽  
...  
Keyword(s):  
Reef Fish ◽  
Deep Water ◽  
Protected Area ◽  
Marine Protected Area ◽  
Biological Effects ◽  
Reef Fishes ◽  
Control Area ◽  
Fish Populations ◽  
Catch Per Unit Effort ◽  
Hurdle Models

Marine protected areas (MPAs) are increasingly used to rebuild fish populations. In 2009, eight MPAs were designated off the southeast United States with the goal of rebuilding populations of long-lived deep-water reef fishes. We tested whether reef fish within the largest of these MPAs, the Snowy Wreck Marine Protected Area (SWMPA), have increased in size and abundance relative to a nearby control area and compared to pre-closure. Hurdle models fitted through Bayesian inference on echosounder data collected in 2007–2009 and 2018–2020 yielded no evidence of an MPA effect. Comparisons of catch-per-unit-effort (CPUE) of all reef fishes yielded similar null results. However, CPUE of reef species with formal stock assessments increased 47% in the SWMPA and decreased 50% in the control area. We found significant increases in mean length of red porgy (Pagrus pagrus) inside the SWMPA but not in the control area. We also found community composition changes, including shifts away from groupers (Serranidae; Epinephelinae) and toward snappers (Lutjanidae) and tilefish (Malacanthidae) in both areas, though we did not detect an MPA effect with this analysis. Our equivocal results indicate that more time and stricter enforcement may be necessary before more biological effects of the SWMPA can be detected.

Species-specific impacts of a small marine reserve on reef fish production and fishing productivity in the Turks and Caicos Islands

2002 ◽  
Vol 29 (4) ◽  
pp. 484-492 ◽  
Author(s):  
Mark Tupper ◽  
Murray A. Rudd
Keyword(s):  
Reef Fish ◽  
Marine Reserves ◽  
Marine Reserve ◽  
Reef Fishes ◽  
Economic Incentives ◽  
Fishing Pressure ◽  
Catch Per Unit Effort ◽  
Turks And Caicos Islands ◽  
Nassau Grouper ◽  
Density And Biomass

Marine reserves are widely considered to potentially benefit reef fisheries through emigration, yet the empirical basis for predicting the extent of this for small reserves is weak. The effects of fishing pressure and habitat on biomass and catch per unit effort (CPUE) of three species of exploited reef fish were studied at South Caicos, Turks and Caicos Islands. Distribution and abundance of hogfish (Lachnolaimus maximus) and white margate (Haemulon album) were inversely correlated with cover of fleshy macroalgae. Nassau grouper (Epinephelus striatus) were positively associated with vertical relief, but were unaffected by algal cover. Mean size, density, and biomass of hogfish were higher in a small (4 km2) marine reserve than on fished reefs, as was biomass of white margate. CPUE of hogfish was inversely related to distance from the centre of the reserve, suggesting that spillover of this species from the reserve to adjacent reefs may enhance local yields, possibly providing economic incentives for fishers to comply with reserve regulations. Fishing pressure, however, had no apparent effect on Nassau grouper. Larger fishes and those that migrate to spawn, such as economically valuable Nassau grouper, may move over too large a range to be effectively protected by small marine reserves. Small reserves may not protect all fish, but they can increase the biomass of smaller or more sedentary reef fishes and may be a useful tool for the conservation or management of species such as hogfish. Other policy options, such as seasonal spawning closures or total allowable catches, need to be considered for larger, more mobile fishes in the Turks and Caicos Islands.

Sign in / Sign up

Export Citation Format

Share Document