scholarly journals The Ecological Studies of Shrimp Penaeus monodon Fabricius, 1798 (Penaeidae) in The Segara Anakan Lagoon (SAL), Cilacap, Central Java, Indonesia

2021 ◽  
Vol 789 (1) ◽  
pp. 012008
Author(s):  
R Pratiwi ◽  
S Sukardjo
Keyword(s):  
Penaeus Monodon ◽  
Ecological Studies ◽  
Central Java ◽  
Segara Anakan Lagoon

The suitability of Segara Anakan waters, Cilacap, Central Java as cultivation area of Polymesoda erosa based on primary productivity using satellite image

2012 ◽  
Vol 2 (2) ◽  
pp. 41-51
Author(s):  
VIVI ENDAR HERAWATI ◽  
AGUS HARTOKO ◽  
SUMINTO SUMINTO
Keyword(s):  
Chlorophyll A ◽  
Primary Productivity ◽  
Habitat Degradation ◽  
Natural Habitat ◽  
Satellite Image ◽  
Economic Value ◽  
Total Suspended Solid ◽  
Suspended Solid ◽  
Central Java ◽  
Segara Anakan Lagoon

Herawati VE, Hartoko A, Suminto. 2012. The suitability of Segara Anakan waters, Cilacap, Central Java as cultivation area of Polymesoda erosa based on primary productivity using satellite image. Bonorowo Wetlands 2: 41-51. Segara Anakan waters, Cilacap, Central Java is a natural habitat of totok shells (Polymesoda erosa) of high economic value, however, the sustainability of these protein sources is threatened due to habitat degradation and over-harvesting. This study aims to (i) analyze the suitability of Segara Anakan Lagoon to cultivate the toktok shells, as a conservation effort, based on the aspect of primary productivity and chlorophyll-a; (ii) to analyze the suitability of Segara Anakan waters to cultivate the toktok shells based on field data and SPOT satellite image data, ie chlorophyll a, water surface temperature, total suspended solid, pH, dissolved oxygen, salinity, as well as nitrate and phosphate content. The basic concept of this research is combining SPOT satellite image analysis and direct field measurement of some primary productivity parameters in Segara Anakan waters to know the suitability for thokthok shells cultivation. Based on scoring and suitability level, stations 1 and 3 (in the western estuary of Segara Anakan lagoon) are " Suitable on condition" (Sesuai Bersyarat) for the cultivation of totok shells, covering an area of 326,035039 ha. While, stations 2, 4, 5, 6 and 7 (other locations) are " Not Suitable" (Tidak Sesuai) for the cultivation of totok shells, covering an area of 557,057573 ha.

scholarly journals THE CHANGE OF MANGROVE COVERAGE IN SEGARAANAKAN LAGOON OF CILACAP – CENTRAL JAVA

2013 ◽  
Vol 19 (2) ◽  
pp. 81
Author(s):  
Bagus Oktori Sutrisno ◽  
Slamet Budi Prayitno
Keyword(s):  
Mangrove Ecosystem ◽  
Vegetation Coverage ◽  
Analysis Method ◽  
Landuse Change ◽  
Mangrove Area ◽  
Central Java ◽  
Area Of Interest ◽  
Map Processing ◽  
High Sedimentation ◽  
Segara Anakan Lagoon

Mangrove ecosystem play san important role in coastal area. In several region mangrove coverage had decreased caused by various factors such as landuse change, erosion and sedimentation. Mangrove ecosystem in Segara Anakan Lagoon had decreased and damaged as well. The current work aimed to analyze the change of mangrove coverage in Segara Anakan Lagoon. A remote sensing analysis was conducted to deployeight years of satellite imagery data from 2002 to 2009. Analysis method included NDVI algorythm map processing which was associated with vegetation coverage in the area of interest. The results show that mangrove coverage in Segara Anakan Lagoon had decreased from 9,163.19 ha in 2002 to 8,433 ha in 2003, 7,764 ha in 2004, 7,252.72 ha in 2005 and 6,213.80 ha in 2006 respectvely. Further decrease occured in 2007 to 5,767.16 ha, 4,987 ha in 2008 and finally to 4,267.13 ha in 2009. Mangrove coverage is decreased approximately 677 ha each year. This decrease might be caused by several factors such as conversion of mangrove coverage to other utilization such as farming, housing and ponds, and high sedimentation rate from Citanduy river. These results suggest that management of mangrove area is needed to support coastal resources sustainability in Cilacap. Therefore, replantation and<br />conservation of mangrove area could be applied for management purposes.

scholarly journals Heavy metal content of tank goby (Glossogobius giuris) in East Segara Anakan, Cilacap, Central Java, Indonesia

2018 ◽  
Vol 21 (3) ◽  
pp. 423
Author(s):  
Sulistiono Sulistiono ◽  
Yeni Irawati ◽  
Djamar T. F Lumban Batu
Keyword(s):  
Heavy Metal ◽  
Heavy Metal Concentration ◽  
Residential Areas ◽  
Safety Level ◽  
Central Java ◽  
Water Ecosystem ◽  
Metal Contents ◽  
Segara Anakan Lagoon ◽  
Glossogobius Giuris ◽  
Safety Limit

Segara Anakan is a semi-close water ecosystem which is connected to Donan River (industrial and residential areas) in the east and Citanduy River (agricultural area) in the west. Most activity in those areas can produce a waste which becomes sources of harmful pollutants to the aquatic environment. The aim of this study was to analyze the content level of heavy metals (Pb, Hg, Cu and Cd) in muscle and safety level consumption of the tank goby (<em>Glossogobius giuris</em>) in the area. This study was conducted for 4 months in June, August, September and October 2017 at the waters of East Segara Anakan Lagoon of Cilacap (Central Java Province), The heavy metal concentration in the muscle was measured by AAS (Atomic Absorption Spectrophotometer). Based on the analysis, the heavy metal contents of Pb, Hg, Cu, and Cd in the tank goby were 0-0.005 mg/kg, 0-0.044 mg/kg, 0.164-0.293 mg/kg, and 0.001-0.032 mg/kg, respectively and these contents were under the safety limit. Safety level of consumption of the fish was 837.3  g/week (for adult) and 251.2  g/week (for children).<br /><br />

scholarly journals Potential Harmful Algal Blooms (HABs) in Segara Anakan Lagoon, Central Java, Indonesia

2018 ◽  
Vol 47 ◽  
pp. 04010 ◽  
Author(s):  
Rose Dewi ◽  
Muhammad Zainuri ◽  
Sutrisno Anggoro ◽  
Tjahjo Winanto ◽  
Hadi Endrawati
Keyword(s):  
Harmful Algal Blooms ◽  
Algal Blooms ◽  
Anthropogenic Activities ◽  
Harmful Effect ◽  
Nursery Ground ◽  
Toxic Substances ◽  
Anthropogenic Pressures ◽  
Central Java ◽  
Spatial Approach ◽  
Segara Anakan Lagoon

Segara Anakan Lagoon (SAL), located along side of soutern coast on western part of Central Java 108°46'–109 ° 05'E; 7 ° 34'–7 ° 48'S. SAL is necessasrily ecosistem as nursery ground. This has been becoming important research relating to primary productivity. The existance of antropogenical activities around the area, is changing inrush input into lagoon. This is going to be worried about giving influences in physical, chemistry, and biological factors of the water and causing deflation in rate value of primer productivity. Rainy and dry season's variability with important impacts on the phytoplankton community structure, abundance and dynamics. Furthermore, the number of coastal ecosystems with identified eutrophication symptoms is increasing worldwide due to the increasing anthropogenic pressures. One of 1the first symptoms of eutrophication is enhanced phytoplankton biomass. Generally, Fitoplanton is important biological indicators in the process. However, high abundance of biomass phytoplankton could give harmful effect toward lagoon, they could produce toxic substances that will be accumulated, it can be endangering .The aim of the research is to determine and calculate potential species of Harmful Algal Blooms (HABs) in SAL with spastial and temporal approach. The spatial approach is done at seven different stations of ecological characteristics SAL, with representations: natural factors and the presence of anthropogenic activities. On the temporal approach (time series) for a year, it refers to the monsoon wind pattern, which are called season (western, the transitional season 1, eastern, and the transitional season 2).The results of laboratory tests are discussed descriptively. Phytoplankton sample were taken vertically using plankton nets, meshsize 25 μm. The result showed that SAL have been found and consisted of 82 species from 5 division phytoplankton: Chrysophyta, Chlorophyta, Cyanophyta, Pyrophyta, and Euglenophyta. 20 species from 9 genus were identified potential as HABs, with four genus of them were known having toxin and endangering for human (Nitzschia, Oscillatoria, Anabaena dan Protoperidinium).Whether, five genus do not produce toxins but giving deflation Oxygen of waters with anoxia condition (Chaetoceros, Coscinodiscus, Rhizosolenia, Thalassiosira, Thalassiotrix).The highest of HABS abundance is dominated during the transitional season II. On the spatial approach, antropoegenic characteristics station contribute to the whole height of HABs. Influence of rainfall, spatially, antropogenical pressure, and hydrodinamical watres causing enhancement of HABs potency.

scholarly journals Komposisi Dan Kelimpahan Fitoplankton Di Laguna Segara Anakan, Cilacap

2019 ◽  
Vol 8 (1) ◽  
pp. 1
Author(s):  
Budhy Wiyarsih ◽  
Hadi Endrawati ◽  
Sri Sedjati
Keyword(s):  
Sampling Method ◽  
Diversity Index ◽  
Biological Indicator ◽  
Fertility Level ◽  
Data Sampling ◽  
Purposive Sampling ◽  
Central Java ◽  
High Sedimentation ◽  
Segara Anakan Lagoon ◽  
Over Time

Segara Anakan merupakan laguna yang terletak di selatan Pulau Jawa tepatnya di perbatasan antara Jawa Barat dengan Jawa Tengah. Kawasan Segara Anakan merupakan tempat bertemunya sungai besar, sehingga mengalami perubahan penurunan kualitas perairan berupa penyempitan dan pedangkalan akibat proses sedimentasi yang tinggi. Hal ini dikhawatirkan dapat mengakibatkan menurunnya kualitas perairan yang dapat mengganggu pertumbuhan fitoplankton di perairan. Fitoplankton merupakan parameter biologi yang dapat dijadikan bioindikator untuk mengevaluasi kualitas dan tingkat kesuburan suatu perairan. Kondisi tentang lingkungan perairan diperkirakan berubah sepanjang waktu, maka perlu penelitian fitoplankton, untuk mengetahui tingkat kesuburan perairannya. Tujuan dari penelitian ini adalah untuk mengetahui komposisi dan kelimpahan fitoplankton di Laguna Segara Anakan, Cilacap. Penelitian ini menggunakan metode deskriptif eksploratif dengan pengambilan data menggunakan purposive sampling method. Hasil menunjukkan ditemukan 34 genera yaitu Kelas Bacillariophyceae (21 genera), Kelas Cyanophyceae (4 genera), Dinophyceae (6 genera), Chlorophyceae (2 genera), dan Euglenophyceae (1 genus). Kelimpahan fitoplankton berkisar antara 12.945,8-38.194,1 sel/liter. Indeks Keanekaragaman termasuk kategori sedang dengan nilai berkisar 1,60 - 2,32. Indeks keseragaman termasuk kategori sedang hingga tinggi, dengan nilai berkisar 0,59 - 0,81. Indeks dominansi berkisar antara 0,18 - 0,44. menunjukkan bahwa tidak ada genus yang mendominasi. Segara Anakan is a lagoon located in the south of Java Island precisely on the border between West Java and Central Java. Segara Anakan area is the place where the big river meets. Water quality decrease because of narrowing the lagoon due to the high sedimentation process. This may affect the presence of phytoplankton in the water. The quality and the fertility level of aquatic can be evaluated through the phytoplankton existence since phytoplankton is used as a biological indicator for the marine environment. The condition of the aquatic environment is expected to change over time, so it is necessary to study phytoplankton. The purpose of this research is to know about the composition and abundance of phytoplankton in Segara Anakan Lagoon, Cilacap. This research used the descriptive explorative method by data sampling using purposive sampling method. The study showed 34 genera of Bacillariophyceae (21 genera), Cyanophyceae (4 genera), Dinophyceae (6 genera), Chlorophyceae (2 genera), and Euglenophyceae (1 genus). The abundance of phytoplankton ranging from 12.945,8-38.194,1 cells/liter. The Diversity Index is a medium category with values ranging from 1.60 to 2.32. The evenness index is moderate to high, with values ranging from 0.59 to 0.81. The Dominant index ranges from 0.18 to 0.44. The value indicates the category of no dominating genus.

scholarly journals NEW LAND ACCRETION FROM 2000-2003 AT SEGARA ANAKAN LAGOON, SOUTH COAST OF WEST AND CENTRAL JAVA

2016 ◽  
Vol 27 (2) ◽  
pp. 99
Author(s):  
I Wayan Lugra ◽  
Deny Setiady
Keyword(s):  
Coarse Sand ◽  
South Coast ◽  
Central Java ◽  
Sediment Transportation ◽  
The Creation ◽  
Segara Anakan Lagoon

Segara Anakan Lagoon is an unique lagoon , where a lot of rivers enter into the lagoon such as Citanduy, Cibeureum, Cijolang, Cikawung and Ciseel Rivers. These rivers bring the sediment materials from upstream to the lagoon areas and resisted by Nusa Kambangan Island. The rate of sediment transportation every year occurred continuously and significantly. Its caused the creation of new land at eastern part of Segara Anakan Lagoon was about 376.69 hectares which is located at Cilacap District, while in the western part is about 15,78 hectares which is located at Ciamis District. Since 1999 to 2003 land accretion at Segara Anakan Lagoon was about 392.47 hectares with the rate of accretion around 78.50 hectares/year. In 1999 the area of the Segara Anakan Lagoon approximately 1,595 hectares. Based on the averages of rate land accretion, its predicted that in the middle of the 2019 whole of Segara Anakan will be land. The study had been done in 2003 by using hand drilling up to 2 meters depth, grab sampler and GPS Garmin 250 Map. The hand drilling result at accretion area, show that at eastern part of study area is composed of silt and cly, while at Nusawere Bay and Solok Jero is characterized by fine to coarse sand. Keywords : sediment materials, accretion area, and Segara Anakan Segara Anakan merupakan sebuah laguna yang unik dimana banyak sungai yang bermuara di perairan tersebut seperti Citanduy, Cibeureum Cimuntur, Cijolang, Cikawung, dan Ciseel. Sungai-sungi tersebut membawa material sedimen dari daerah aliran hulu ke kawasan laguna yang tertahan oleh Pulau Nusa Kambangan. Transportasi sedimen berlangsung terus menerus dengan laju pertambahan dari tahun ke tahun cenderung meningkat secara signifikan. Akibatnya terjadi pertambahan daratan di perairan Segara Anakan bagian timur sekitar 376,69 hektar yang termasuk wilayah Kabupaten Cilacap dan di bagian barat sekitar 15,78 hektar yang terletak di wilayah Kabupaten Ciamis. Sejak 1999 – 2003, total luas pertambahan daratan di perairan Segara Anakan sekitar 392,47 hektar dengan perkiraan laju pertambahan daratan sekitar 78,50 hektar/tahun. Tahun 1999 luas Perairan Segara Anakan kurang lebih 1.595 hektar. Berdasarkan laju pertambahan daratan rata-rata tersebut, maka diperkirakan pada pertengahan tahun 2019 Perairan Segara Anakan seluruhnya menjadi daratan. Pada tahun 2003, telah dilakukan penelitian dengan menggunakan bor tangan sampai kedalaman 2 meter, pemercontoh comot dan GPS Garmin 250 Map. Hasil pemboran di lokasi pertambahan daratan tersebut menunjukkan di bagian timur tersusun dari lanau dan lempung, sedangkan di Teluk Nusawere dan Solok Jero disusun oleh pasir berbutir halus sampai sangat kasar. Kata kunci : material sedimen, pertambahan daratan, dan Segara Anakan

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