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All Journal JURNAL TEKNOLOGI LINGKUNGAN Jurnal Pengelolaan Sumberdaya Alam dan Lingkungan (Journal of Natural Resources and Environmental Management) Marine Research in Indonesia
Sukardjo, Sukristijono
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Agriculture, Biological Sciences & Forestry Earth & Planetary Sciences Environmental Science

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LITTER PRODUCTION OF THE MANGROVE FORESTS IN TIRIS, INDRAMAYU, WEST JAVA, INDONESIA Sukardjo, Sukristijono
Marine Research in Indonesia Vol 35 No 1 (2010)
Publisher : Research Center for Oceanography - Indonesian Institute of Sciences (LIPI)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14203/mri.v35i1.8

Abstract

The Tiris mangrove forest, Rhizophora apiculata-R. mucronata community, grows in the area with highly human induced stress and typically by silty clay substrate. The litterfall studies in Tiris, Indramayu (Lat. 6º 10'-7º 49' S and long. 107º25'-108º25' E), using litterfall trap and plot techniques indicate that the mangrove forest is very productive. Litter productivity, as measured by litter trapping of a R. apiculata dominant mangrove forest at Tiris is 1,290.95 dry g/m2 /year, and estimated as 12.90 dry t/ha/year and leaf shared is 40.70%. This is a high value when compared with the mangrove forests in the Indo-West Pacific and/or Malesian regions, and even with R. mucronata plantation in Tritih, Segara Anakan, Cilacap (Lat. 7º 41'-7º 45' S and Long. 108º 46'-109º E). Correlations between litter components with rainfall, number of rain-day, wind run, mean maximum temperature, mean minimum temperature, and mean monthly temperature, and relative humidity are calculated for understanding their role in litter production. These correlations are discussed and it is suggested that seasonality of mangrove need to be considered in terms of whole tree physiology rather than isolated environmental factors. Also, the high production of litter means an important contribution to support food-webs of many marine organisms. The results suggest that, in terms of litter, the mangrove forests in Tiris may be one of the most productive forest types in Java.
MANGROVES FOR NATIONAL DEVELOPMENT AND CONSERVATION IN INDONESIA: CHALLENGES FOR THE FUTURE Sukardjo, Sukristijono
Marine Research in Indonesia Vol 34 No 1 (2009)
Publisher : Research Center for Oceanography - Indonesian Institute of Sciences (LIPI)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14203/mri.v34i1.434

Abstract

Indonesia's mangrove resources (soils and waters, flora and fauna, and as an ecosystem all are called as mangrove biodiversity) are growing in importance. As a consequence of past and present human utilization the mangrove resources have been depleted. Keen competition for use of the mangrove resources is apparent and is likely to intensify in the future. This policy document stresses the importance of mangroves for the Nation and the need for the Government to manage and protect them. A set of basic principles for the management and protection of mangroves is provided, together with an outline of some actions which local and central governments (Pemerintah Pusat dan Daerah) should take up in order to achieve a balance between the use of mangrove resources, their conservation and long term national development.
VEGETASI BAWAH DI TEGAKAN TUA COCOS NUCIFERA L (ARECACEAE) DI PULAU PARI, TELUK JAKARTA=(UNDER-GROWTH VEGETATION IN THE OLD COCONUT COCOS NUCIFERA L. (ARECACEAE) STANDS IN THE PARI ISLAND, JAKARTA BAY) Yusuf, Razali; ., Purwaningsih; Sukardjo, Sukristijono
Jurnal Teknologi Lingkungan Vol. 11 No. 2 (2010)
Publisher : Center for Environmental Technology - Agency for Assessment and Application of Technology

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (597.984 KB) | DOI: 10.29122/jtl.v11i2.1201

Abstract

Undergrowth vegetation analysis in the old coconut stands in the Pari Island wasundertaken, to determine the structure and floristic composition in relation with their habitat characteristics. Physiognomically, the undergrowth vegetation typified by grasses community with Ischaemum muticum (Importance Value: 122.94%) and Imperata ylindrica (Importance Value:  5.45%) to be a dominant and co-dominant species,respectively. Floristically, the grasses community consists of 27 families along with their 56 genera and 58 species. Amongst those, only 15 species belong to a weed component and can be classified as principal and common weed species in the agricultural land in Indonesia. The grasses community has four common families in term of their highestnumber of species, viz Compositae, Euphorbiaceae, Leguminosae and Poaceae.Based on the ordination technique of Principal Component Analysis (PCA) three distinct groups of the vegetation component can be recognized as (i) pes-caprae formation, (ii)Calophyllum formation and (iii) transition community zone. The spatial distribution of prevalent species in relation with their habitat characters was discussed. Generally, the grasses community can be classified into secondary vegetation of the small island.Keywords : Vegetasi bawah, pohon kelapa, kenanekaragaman jenis, mitigasi,pengelolaan terpadu pesisir dan laut, Pulau Pari, Teluk Jakarta
English: - Pratiwi, Rianta; Sukardjo, Sukristijono; Widyastuti, Ernawati; Hafizt, Muhammad
Jurnal Pengelolaan Sumberdaya Alam dan Lingkungan (Journal of Natural Resources and Environmental Management) Vol 12 No 3 (2022): Jurnal Pengelolaan Sumberdaya Alam dan Lingkungan (JPSL)
Publisher : Pusat Penelitian Lingkungan Hidup, IPB (PPLH-IPB) dan Program Studi Pengelolaan Sumberdaya Alam dan Lingkungan, IPB (PS. PSL, SPs. IPB)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29244/jpsl.12.3.404-413

Abstract

Segara Anakan mangrove waters is a lagoon surrounded by mangrove forests and muddy land. Mangrove forests have an ecological function such as spawning ground, nursery ground, and feeding ground for various biota. Mud crab is one of fishery commodities, which is important in Indonesia. Segara Anakan mangrove waters, is one of the fishing villages which catch mud crabs because of the high demand. The high demand for mud crabs needs to be balanced with the right management strategy, so that the population will not extinction. The purpose of this study is to determine the ecology of mud crab, Scylla serrata Forskål, 1775 and its fishery potential and also to explain the habitat population in the Segara Anakan mangrove forest. Many previous studies conducted by previous researchers. Environmental parameters, i.e. temperature, salinity, oxygen, light penetration, and nature of the bottom were also studied. Crabs were caught by traditional crab catch fishery called “Wadong” (fish pot). Around 6487 crabs were caught by “wadong”. The catch consisted of 2920 male crabs (45.02%) and 3567 female crabs (54.98%). The dominant size groups for males and females in terms of their carapace length (CL) were 35.00-40.00 mm and 43.00-106.00 mm, respectively. Females mature at smaller size, i.e. at 42.70 mm CL. Breeding takes places during June-July. CL weight relationship showed that males were heavier than females. The regression equations for both sexes are as follows: WF= 10-3 5.871 L2.4443 (r= 0.999) and WM= 10-4 4.043 L3.1035 (r= 0.999).
Co-Authors Ernawati Widyastuti, Ernawati Hafizt, Muhammad Purwaningsih . Rianta Pratiwi YUSUF, RAZALI