ORCID Profile
0000-0001-7240-3069
Current Organisation
University of Tasmania
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Publisher: IOP Publishing
Date: 20-05-2019
Publisher: Egypts Presidential Specialized Council for Education and Scientific Research
Date: 07-2022
Publisher: IOP Publishing
Date: 20-05-2019
Publisher: Institute of Research and Community Services Diponegoro University (LPPM UNDIP)
Date: 23-04-2021
DOI: 10.14710/IK.IJMS.26.2.125-134
Abstract: Coral reefs currently are suffered from natural factors along with increasing anthropogenic activity. Panjang Island, a small reef island located in Jepara Regency, may also be experiencing such conditions. Therefore, this work was aimed to observe the condition of the coral cover of Panjang Island. Line intercept transect was applied to survey the coral cover and mortality index from fourteen stations. Insitu data consisted of the bottom substrate composition of the reefs and the physical parameters of the sea. The secondary data, i.e. coral reef area maps from 2001 to 2019 were taken from Landsat Image 7 and 8, data of wind were obtained from www.ogimet.com, while tidal data were collected from BMKG. The bathymetry was determined from the Geospatial Information Agency data, salinity global analysis forecast Phy 001.024 (CMEMS). Sea surface temperature (SST), and chlorophyll-a distribution were analyzed using ENVI software. The result showed that Panjang Island has a poor to the moderate condition of hard coral. Two out of six categories of abiotic and dead coral were found to be high. The mortality index of coral was in the high category (average 0.52). During research periods the sea waters were characterized by high sea surface temperature (29.34-30.94°C), chlorophyll-a was also tended to be high (0-2.65 mg.m-3), and an average of salinity was high 32 ‰. The weak currents came to all sides of the island, therefore the coral reef was not exposed to extreme currents. The waves came from the east, then the energy decreases after being blocked by coral reefs on the eastern side of the island, so that coral reefs in the northeast and south sides were safer to be exposed. The results suggest that hydrodynamic ecology directly or indirectly affected the percentage of coral cover and mortality index at the reefs of Panjang Island.
Publisher: IOP Publishing
Date: 02-2018
Publisher: IOP Publishing
Date: 02-2021
DOI: 10.1088/1755-1315/649/1/012007
Abstract: World consumption of eel nowadays still depend on mostly (80%) from Aquaculture industry. However, the eel seed of glass eel, elver either bigger sizes of eel juvenile, still also depend on the wild caught. The study aims to test the survival rate of unfed eel from different sources of seed and sizes. The eel collected from five riverine of catch area i.e. Dlangu of Purworejo (CA I), Larangan of Nusawungu (CA II), Ciberem of Kaliwungu (CA III), Patimuan creek (CA IV), and Ciwulan riverine of Tasikmalaya (CA V) which were caught in August 2018. The other eels were caught in July 2019 collected from Segoro Anakan (CA VI), Buton Cilacap of Indian Ocean Coast Line (CAVII), Gatel riverine of Nusawungu (CA VIII) and Pasir creek of Sidobunder Puring, Kebumen (CA IX). The eel sizes were grouped into four class of sizes i.e. glass eel (GE), small pencil (‘sp’), big pencil (‘bp’) and consumption size (Co) as a comparator. For the shipment trials, eel were transported from those caught area to Semarang (ranging between 180 to 240 km distances) by normal seeds package with oxygenated plastic bag. Unfed trials, the eel were kept in a limited water volume without aeration and the water replaced every day. Experiment was conducted during 30 days without feeding. The result shows that the sizes of eel i.e. GE, SP, BP, and Con can survive during shipment with 23 and 27 h duration time. Unfed treatment, the best survival rate found in ‘Co’ (52 %) followed by ‘bp’ (34 %), ‘sp’ (33 %) during 30 days without food and aeration. However, the GE found 100 % death during 18 days in unfed conditions. Eel seed sources comparison shows significantly different (α 0.05) among caught area locations. These can be conclude that eel seeds of GE size can be keep during delivery transportation (shipment) without food given for 23 h, and can be kept prior to other purposes for approx. fortnight while ‘sp’ and ‘bp’ sizes for mostly one month.
Publisher: IOP Publishing
Date: 02-2017
Publisher: IOP Publishing
Date: 20-05-2019
Publisher: IOP Publishing
Date: 05-2021
DOI: 10.1088/1755-1315/750/1/012042
Abstract: Morphometric analysis is one of the procedures that can be used for identifying organism species. Determination of the long and shortfin eel ( Anguilla sp.) is usually based on the specific measurements of the dorsal and anal fin. This study aims to evaluate a variety of pre-dorsal (PD/TL %), pre-anal (PA/TL %), and ano-dorsal ratio (AD %) in the different eel size classes and variation of sizes among Central Java estuaries. S les (148 eels) were taken from riverine, marshes, and impounding seawater of Central Java estuaries in July 2019. The results show that the widest ranges of PD/TL, PA/TL, and AD ratios (%) were 12.98 – 48.18 %, 19.03 – 50.78 %, and -6.56 to 32.88 %, respectively, which were found in Gatel riverine of Nusawungu. Those values overlap with the species of Anguilla interioris, A. megastoma, A. nebulosa nebulosa, A. labiata, A. marmorata, A. bicolor bicolor , and even A. b. pacifica . Percentage value in a certain ranges of A-D were dominated by 0 - 3.6 % (96.3 %) and 14.1 – 19.3 % (3.7 %). This can be concluded that during the months of July, the short-fin eel (known as A. b. bicolor ) had been dominated to be caught from Southern Central Java Estuaries than a long-fin eel.
No related grants have been discovered for Nur Taufiq-Spj.