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"Yotefa Bay, lying on the north coast of Jayapura, was established as a Tourist Park in 1978, based on the Minister of Agriculture's Decree No.: 372/KptslUm/6/1978 dated 9"? June 1978, Mangrove forest, which spreads out from the north part to southeast part of Yotefa Bay, is dominated by Rhizophora spp. Research on pattern of litter production of Rhizophora mucronata in Yotefa Bay Tourist Park, Jayapura-Papua, was conducted from June - September 1999. This research was experimental research using vegetation analysis transect method, and the data analysis to know the community srtucture was conducted using quantitative parameters, i.e.: diameter at breast high (dbh); density and bassal area. Litterfall was collected according to the methods describes by Brown (1984), using a spesilic litter traps- All materials acumulated in the traps were collected once per week during the sampling period. Estimated of litterfall rates were using the formulas by Chansang and Poovachiranon (1990), and estimated of production of litterfall using the statistical porcedures by Walpole (1985).

The results showed that total of R. mucronata litter production ranged between 18.8120 tons ha"year" to 78.84 tons ha"year". The largest component of litter obtained was leaves: 52.04%, followed by component of fruits 34.34%, flowers 9.91% and skin-branches 3.78% respectively. There is not a tendency that pattern of leave litter production in the mangrove forest in Yotefa Bay follows rainfall fluctuation, and did not tend to be greater during rainy season. lt is necessary to conduct similar research in other mangrove forest of Yotefa Bay Tourist Park. It is hoped that in th next research, besides the use of more spesific supporting parameters, the location for observation will be wider, with many more litter traps and longer time for observation. Research on decomposition rate of R. mucronata leave litter was conducted in 16 weeks, starting from June to September 1999.

This research was also a factorial experiment with two factors. Data was analyzed using ANOVA with two-way classification in order to know whether the time-length of soaking and immersion, and the location of decomposition have any influence on the rate of decomposition. Analysis was also done to determine the rate of decomposition value (k value). Chemical analysis was done in the laboratory to know the content of Carbon, Nitrogen, Phosphor and Potassium elements in the leave litter of the R. rnucronafa of the decomposition remnants.

The results showed that decomposition rate of leave litter of R. mucronata was influenced by the time-length of soaking and immersion and the decomposition location. The rate of decomposition value (k value) average was 1.19; this value showed that decomposition worked well. Average contents of element of Carbon, Nitrogen, Phosphor and Potassium were respectively 14,135, 1,27%, O,100% and O,212%. The existence of those elements in the decomposed mangrove leave litter has effected the rate of decomposition value. lt is necessary to conduct a similar research in the other part of mangrove forest in the Yotefa Bay Tourist Park, Jayapura. lt is expected that the next research will be focused more on microorganism activities (fungi and bacteria) and the influence of other abiotic factors, which have not been done in this research, in order to know the influence of those factors onthe rate of decomposition."

"During the past thirty years Sumatra has undergone the highest deforestation rate in all of Indonesia. This is the result of the Indonesian forest management that mainly focuses on wood exploitation. In addition, the high rate of human settlements and unplanned development has accelerated the conversion of forests into palm plantations, rubber, coffee, tea and other crops. These conversions will ultimately decrease the biodiversity of Sumatra, therefore it is very important than effective conservation areas be placed to conserve the biodiversity of Sumatra.This thesis is a compilation of two scientific papers entitled 1) The Decrease of Ecosystem Types and Its Representation in Conservation Areas of Sumatra and 2) Development, Distribution. and Management of Conservation Areas in Sumatra. The first paper discusses the causes of the area decrease of each ecosystem types and its representation in conservation areas and also to give recommendations if whether an ecosystem type is not represented. The second paper discuses area development and distribution of conservation areas in Sumatra from 1967-2000; analyses the level of management in conservation areas from the point of view of regional autonomy in governance, funding and human resources. Gap analysis and descriptive methods were use to asses ecosystem types that are currently represented in conservation area. Data is compiled from a variety of resources, mostly from competent institution, such as Dept. of Forestry, Dept. of Agriculture, Dept. of Transmigration, State Office of The Ministry of Environment, and Central Biro of Statistics and non-government organizations (CIFOR, CI-IP, WWF, Wetland International, Birdlife, Walhi, and other local NGO's).The main causes of degradation and shrinkage of ecosystems in Sumatra are illegal logging, extensive transmigration, illegal mining, plantations, and forest fires, The Sumatran ecosystems can be divided into 15 types, One of them-the heath forests has not been represented in any conservation areas. Seven types of ecosystem have less than 10% representation in conservation areas. They are: semi-evergreen rainforest (1 %), ironwood forests (2%), peat swamp forest (2%), mangrove forests (4%), lowland evergreen rainforest (5%), freshwater swamp forests (6%), and tropical pine forest (7%). Six other ecosystems that are represented adequately (more than 10%) are: mountain moist forest (14%), lowland limestone forests (15%); sandy-beach forests (15%) sub alpine forest (21%), limestone mountain forests (29 %), and coral reefs (30%). There is one ecosystem not discussed (rivers and lakes) because of the lack of data and information. Ecosystems that aren't adequately represented in conservation areas are mostly in low land forest; these regions have in fact undergone deforestation and conversions. Adding conservation areas for these ecosystems can be done by legislating already existing conservation area proposals.The development of conservation area management in Sumatra is towards the making of National Parks, which encompasses 75% (3.430.390 ha) of the total conservation areas (4.567.750 ha). Besides of being large, in area wise, national parks have more funding and human resources. Parks also accommodate the various functions of conservation areas. Judging from its size, more than 81% (3.699.878 ha) of the total conservation areas in Sumatra are small (less than 50.000 ha) which spreads over low land areas, The distribution of conservation areas in Sumatra is 60% (2.653.000 ha) on high land areas.Sumatra's national parks are funded averagely below parks in Java. Parks in Sumatra are run at an average of Rp 2.500 per hectare, where else in Java, it is Rp 37.000 per hectare. The same situation applies to ratio of land to human resources. In Sumatra one forest service employee must cover 3.500 hectares of park area, meanwhile in Gunung Gede Pangranggo National Park (Java) one employee has to cover 158 hectares. Noting the various problems in Sumatra such as illegal settlements, illegal logging, illegal cattle herding, poaching, forest fires and etc. the current condition is far from adequate. Even with limited funding, by utilizing management systems like ICDP (Integrated Community Development Project), IPAS (Integrated Protected Areas System) or Ecosystem Management, the goals of conservation will hopefully be reached."

"UJI INFEKTIVITAS Scleroderma spp. PADA SEMAI Shoreaselarrica (DC.) Blume DAN Hopea odorata (Roxb.)ABSTRACT 1Infection test of Scleroderma geaster, Scleroderma sirmamariense, Sclerodermacolumnare and Scleroderma sp. to Shorea selanica seedlings has been studied undergreen house conditions. Those myconhizal lirngi, except Scleroderma sp. were alsotested to Hopea odorara seedlings. Root mycorrhizal percentage and formation ofmantel and Hartigfs net structures were investigated.The objective of the research was to find out the most infective Sclerodermamycorrhizal iimgi to Shorea selanica and Hopea odorara seedlings._ Root structural analysis of 3 months inoculated roots showed that there weremycorrhizal colonization in Shorea selanica and Hopea odoraia rooting system butmantel and I-Iartig?s net structures were not formed yet. These structures werecompletely fonned 4 months after inoculation. Root structure observation showed thatScleroderma spp. colonized and infected well the root system of Shorea selarzica andHopea odorara seedlings. The percentage of mycorrhizal roots was 13.75 % to 42.50 %for Shorea selanica seedlings and 14.17 % to 59.17 % for Hopea odorata. Hartig?s netstructures were formed in between two radially elongated epidermis cells.PENDAHULUANTanaman meranti (Dqoterocarpaceae) merupakan salah satu pohon hutan tropisyang mutlak rnembutuhkan mikoriza terutama pada tingkat semai (Yasman, 1997).Mikoriza adalah suatu asosiasi yang sepenuhnya simbiosis dan menghasilkan suatu sifatmorfologi yang baru dan konsisten dalam proses asosiasinya serta mendatangkankcuntungan untuk lcedua organisme tersebut (Harley & Smith, 1983). Sclerodermaspp. mempakan cendawan elctomikoriza yang sexing ditemukan berasosiasi dengan jenis-jenis tanaman dan famili Dipterocarpaceae, Pinaceae dan Gnetaceae. Sifat khusus dariektomikoriza adalah adanya struktur mantel yang terbcntuk dad jalinan hifa, yangmenetap pada permukaan akar dan Hartig-net yang terdapat di antara sel epidermis dan1"

"Thesis Supervisors: Dr. Suyanto Pawiroharsono; Prof. Dr. Indrawati GandjarSUMMARYFood deterioration is often due to lipid oxidation, excluding bacterial andenzymatic spoilage. The end-products of lipid oxidation, such as aldehydes,ketones, and alcohols are responsible for unacceptable off-tiavors and off-odors in food. Lipid oxidation can be inhibited by antioxidants.Soybean tempe is the most popular indigenous fermented food inIndonesia. Soybeans are known to contain isotiavones. Four major forms areknown respectively as acetylglycosides, malonylglycosides, glycosides, andaglycones.Tempe were produced from soybean fermentation by Rhizopus oryzaeUICC 524 and Rhizopus microsporus var. chinensis UICC 521. The tempesamples were extracted with methanol and the extraction defatted with hexa»ne. The isoflavone aglycones were isolated using column chromatography,and then anaiyzed using a gradient elution reverse phase of high-pressureliquid chromatography (HPLC). After HPLC analysis, isotiavone aglyconeswere evaporated to dryness and added to soybean oil at the 100, 200, 300,iii ' and 400-ppm concentration in test tubes, then heated at 170°C for 30 minu-tes. The oxidation of soybean oil was measured using the thiobarbituric acid(TBA) test. The result, called thiobarbituric acid reactive substances(TBARS) value, was expressed as pmolll and compared to the syntheticantioxidant, buthylated hidroxytoluene (BHT), at the same concentration.The profile of isoflavone aglycones isolated contains daidzein andgenistein. No factor-2 (6,7,4'-trihidroxyisoflavone) and glycitein were detec-ted. Daidzein resulted from biotransformation of daidzin was dominant inboth tempe samples. The isoflavone biotransformation was much greater byR. microsporus var. chinensis UICC 521 than by R. oryzae UICC 524, exceptfor the 24 hours incubation. After 72 hours of incubation, the total isoflavoneaglycones in tempe using R. microsporus var. chfnensis UICC 521 was721.6 pglg and when using R. oryzae UICC 524, 268.2 p.glg.The oxidized soybean oil without any antioxidants had a TBARS value of327.32 1 20.31 pmol/1. Addition of the antioxidants showed a decreasedTBARS value following increasing concentration for both. For concentrationuntil 300 ppm, the TBARS values of oxidized soybean oil added with isofla-vone aglycones were greater than when added with BHT, respectively55.40 zl: 2.77 pmol!! and 45.20 i 2.63 pmolll. However at concentration of400 ppm, the TBARS values of oxidized soybean oil added with isoftavoneaglycones and added with BHT did not show a significant difference.ix + -51 pp; 6 append; 5 plates; 3 tables.Bilb 35 (1964-1999).iv"

"Mangrove forest is coastal vegetation which influenced by sea water and river flow tide. Beside as a habitat for various sea biota and natural food resources for various fish, mangrove forest also has important function to protect coastline ecosystem.A Two kind of research have been done; first, silvofishery aspect and status and conservation mangrove forest in Muara Gembong Bekasi West JavaThe first research for studying variously silvofishery ecology aspect. Result of research shows litter production around 3,0-4,8 ton/ha/year; velocity litter decomposition 55 - 77 %; temperature 30,2 - 30,9 °C; salinity 21,7 - 27,5; brightness 0,48 - 99,5 m; pH 7,9 - 8.1; oxygen 4,5 - 5,4 mgll; BOD 1.9 - 2,9 mg/l; COD 139,1 - 272,6 mgll; Nitrat-N 0,140 - 0.274 mgll: Ortho-P040 0,034 -0.062 mgll. Fitoplankton analysis got result there was 4 family 17 spesies and for zooplankton had 2 family with 6 spesies. The second research have been done for knowing about the total mangrove plant which grew there and for giving ecology characteristics. The research shows that in research area had 14 species from 9 family. Vegetation in this area is dominated by Rhizophora, Avicenia, Exoecria, Sonneratia, Bruguiera, Achantus, Acrostichum, Aegiceros, Wedelia, Nypa.The conclusion of two researches shows mangrove forest in Muara Gembong Bekasi West Java is unique estuarine ecosystem type with mangrove and in this area had a good potential to be developed as brackiswater area through silvofishery. According to potential area and considering need projection, management of mangrove forest area have to be developed with government support. Because we face a problem with brackwiswater farmer who always try to enlarge their brackiswater area through cut down the mangrove plant"

"A study on habitat and food preference of Philemon buceroides in Moyo island, West Nusa Tenggara was conducted in April 1999 until July 1999. The aim of study is to explore the diversity and composition of plants and foods prefered by P. buceroides in its nature habitat. The results from this study will be very valuable in providing information and managing its conservation in both nature and or in man made habitat (in-situ and ex-situ)."

"The negative effect of chemical insecticides has ted to the efforts in tinding altemative strategies for biological pest control. Mycoinsecticide is one ofthe biological pesticides. which is among the most interesting agents of insect control. lt is well known that entomopathogenic fungi can kill insects.There are only few commercial products, which are produced on large scale for several years. Beauveria bassiana is one of the entomopathogenic fungus commonly used as a biocontrol agent for pests of crops. This fungus can be isolated from soil, plant materials or insect cadavers.This thesis consist of two papers, entitled : Isolation, identification and screening of indigenous entomopathogenic fungus B. bassiana from Brebes, Central of Java, and Optimization of mycoinsecticide production of indigenous B. bassiana using rice tlour as a substrate. The aims of these research are to isolate, identify and screen indigenous entomopathogenic fungus B. bassiana from Brebes, Central of Java and to assess the optimization of mycoinsecticide fermentation of indigenous B. bassiana using rice flour as the substrate through solid substrate fermentation (SSF) technique."

"Limestone cave is an unique ecosystem with having characteristics on enclosed space, dark, stable temperature, moist, air sirculation and being inhabited by specific flora and fauna. A limestone cave ecosystem is fragile and unrenewable for the process of its formation needs millions of years (Bullock,1965:60; Whitten et al. 1996: 542). Petruk and Jatijajar limestone caves are located at the vicinity of South Gombong Crust ,Central Java. Being potential as tourist attractions, the two caves are made used by local government tourist agency of Kebumen Regency. To create a proper managament system which saveguard the ecological function of the cave as well as the related ecological process, studies on the biodiversity and ecology are needed. The objectives of this study are primarily to understand : (1). The level of abundance of bats (2). The different of the physical environment which influence the bats populations (3). The diversity of fauna (4). The preference roosting place the bats at Petruk and Jatijajar cave. This study is conducted at Petruk cave and Jatijajar cave which are located at Ayah subdistric , Kebumen regency , Central Java in July - September 1999. The estimation of bat populations is made by counting the total number of induvidual bats when they left the cave in the evening and roosting the roof of cave during the days. For physical environment studies of the cave, the temperature, humidity and the light intensity at every zone of the cave were measured. Avertebrata and water fauna diversity were calculated by square method (murray 1991: 48), and the vertebrate diversity by line transek method (Wardoyo: 1986:11). The habitat preference of bat's roosting was identified using several criteria including the distance of the roosting place from the cave enterance, temperature, humidity and light intensity of the roosting place of each bats colony. To compare the physical data of the similar zone the ANOVA test was used at the level of 95 % signiticant (Walpole 1987: 383).The fauna diversity index was calculated by the Shanon - Whiner index (Cox, 1997:195). The similarity of those population were measured by Sorensen formula (Cox, 1997:197 ).The map for roosting habitat preference is made based on available map has been provided by Finspac' (1997), while for Jatijajar cave has been prepared by tourism agency of the Kebumen local goverment 1997. Conclusions drawn from this study were : 1) The bat population of Petruk cave during the research was approximately 144.00 at 661,34 and of Jatijajar cave around 2.874 + 179,2. 2) The physical environment of Petruk cave was warmer, with a high humidity level , and darker than the Jatijajar cave. 3) The land fauna diversity of Petruk cave was higher than that of Jatijajar cave. However those caves have similarities concerning the water fauna diversity. 4) At petruk cave 8 roosting places in habited by 6 species of bat' s namely : Rousettus amplexicaudatus, Hipposideros bicolor,Hipposideros diadema, Myotis horsfieldii, Tadarida plicata and Rhinolopus luctus. At Jatijajar cave there are 6 roosting places inhabited by 3 species of bat , namely: Rousettus amplexicaudatus, Hipposideros bicolor and Rhinoilopus luctus. At both of cave the R. amplexicaudatus prefer red to have a roosting place somewhere around the entrance due to sufficient light. However R. luctus preferred to have a roosting place at the far end of the cave where the level of humidity is high and there is no light at all. The other species : H. bicofon H. diadema ,M, horsfieldii, and T. plicata preferred to have a roosting place at the medle of the cave which little light is available and the temperature and humidity are fluctuative."