Papers by Dr. Ir. Wiwik Ekyastuti, M.Si
Jurnal Hutan Lestari: Jurnal Penelitian Kehutanan, Nov 16, 2023
Macroscopic fungi or macrofungi are fungi that play an important role in the preservation of fore... more Macroscopic fungi or macrofungi are fungi that play an important role in the preservation of forest ecosystems. The study aimed to obtain and describe data on macroscopic mushroom species diversity in Semujan Hill, Danau Sentarum National Park, Kapuas Hulu District. The study used a survey method with a double plot sampling technique of 10 plots with a plot size of 20 m x 10 m, a sub-plot of 5 m x 5 m. The results showed that there were 23 species from 7 orders and 12 macroscopic mushroom families in the Bukit Semujan forest area. The most commonly found macroscopic fungus family is the Polyporaceae family. The level of macroscopic fungal species diversity in the Bukit Semujan area is included in the moderate category with a species diversity index (H') value of 2.219. The highest importance value index was the species of Marasmiellus candidus (52.15%). The dominance index of mushroom species at the location is in the low category with a value of 0.176, while the richness of the mushroom species is in the medium category with a value of 3.516.
Jurnal Hutan Lestari: Jurnal Penelitian Kehutanan, Mar 15, 2023
Belimbing Darah (Baccaurea angulata) is a protected endemic plant at Kalimantan, and its fruit is... more Belimbing Darah (Baccaurea angulata) is a protected endemic plant at Kalimantan, and its fruit is used as a local medicine. The damage to the environment around the Sambas Botanical Garden endangers the environment that threatens plants. Therefore, this study aims to obtain data on the habitat condition and distribution pattern of the Belimbing Darah at the Sambas Botanical Garden. The method used a survey with a sampling technique plot path via systematic. The results show that climatic factors influence the Belimbing Darah habitat. These climatic factors are temperature 26-28°C, humidity 94-99%, light intensity 75-155 Lx, rainfall/month 191.380 mm. Geographical factors are slope 5-55°, altitude 22-63 meters above sea level, hilly topography. Edaphic factors are pH 5-7, humidity 33% (dry), ultisol soil type with clay (lowland, riparian), alluvial soil with clayey (swamp), and biotic factor is vegetation. The distribution pattern of Belimbing Darah is clustered (lowland) because it grows around its parent tree. The uniform distribution (riparian, swamp) is influenced by the environment through the surrounding animals that play a role in the distribution and like the edaphic, climatic, geography factors supporting growth. The biotic and environmental damage factors can affect the growth of Belimbing Darah in the Sambas Botanical Garden whereby the density of the Belimbing Darah plant is 671/hectares, most growing in the lowlands 391/hectares. The research result implication can be used to make protection for an in-situ collection of Belimbing Darah plants in the Sambas Botanical Garden.
Biodiversitas Journal of Biological Diversity
Mushrooms play an important role in ecosystems and human life. They can be found in various place... more Mushrooms play an important role in ecosystems and human life. They can be found in various places including in oil palm plantations. The aim of this study was to survey and identify the population of macroscopic mushrooms or macrofungi in smallholder oil palm plantations on tropical peatlands in Kampung Baru Village, Kubu Raya District, West Kalimantan, Indonesia using the field survey method. In the research area, a dam has been constructed to regulate the water level at 30 cm, 40 cm, 50 cm, and 60 cm from the surface. Sampling was carried out in these four conditions. The study revealed the presence of 34 species of macrofungi belonging to the Basidiomycota. A groundwater level ranging from 40-60 cm from the surface was identified as favorable for macrofungal growth. Meanwhile, a groundwater level of 30 cm from the surface was found to be unsuitable for macrofungal growth in the peatlands. The level of macrofungal species diversity in smallholder oil palm plantations on the peatlands was determined to be moderate.
IOP Conference Series: Earth and Environmental Science
Open-abandoned peatland commonly were not hydrologically well-managed in West Kalimantan causing ... more Open-abandoned peatland commonly were not hydrologically well-managed in West Kalimantan causing continuous degradation of peat ecosystems, due to peat drying. This condition damage the carbon balance and function of tropical peatlands, result in significant greenhouse gas emissions. Tropical peat in the Kubu Raya District of West Kalimantan, which has a relatively large area of peat, has been degraded due to uncontrolled drainage and land fires caused by lack of management post the landcover changes. This study aims to clarify the partition of carbon loss in open peatlands due to the heterotrophic respiration (CO2 emission) process, which is part of the declining peat layer due to subsidence. The CO2 emission and subsidence assessments were accomplished for two years. The results show an increase in peat CO2 emissions to ~300% when groundwater level (GWL) lowered from ~0-5cm to >80cm. The trend is similar to the subsidence process due to changes in GWL. Carbon dioxide emissions ...
Jurnal Hutan Lestari: Jurnal Penelitian Kehutanan, Jun 16, 2022
The area of mangrove forest made by the NGO Surya Perdana Mandiri (SPM) in Setapuk Besar Singkawa... more The area of mangrove forest made by the NGO Surya Perdana Mandiri (SPM) in Setapuk Besar Singkawang Village has increased every year. The enthusiasm of the SPM NGO to further increase the area of the mangrove forest is still high. The problem is, the source of mangrove seeds is limited. Therefore, research on the origin of seed sources is needed to produce good seeds for new land revegetation. This study aims to analyzed the growth response of R. stylose seedlings from different seed sources, namely seeds picked directly from the mother tree and seeds that had fallen on the ground. This research method used a completely randomized design (CRD) and uses data analysis with two independent sample t-tests. The results showed that no difference between the treatment of pick from the tree and fall from the tree. The value of the quality index of seeds from the two treatments of seed sources was > 0.09 and showed that both treatments included criteria for seeds that could be used in nurseries. Planting to increase the area of mangrove forest in Setapuk Besar Singkawang Village can be done either with seeds from fallen trees or tree picking.
IOP Conference Series: Earth and Environmental Science
Litsea garciae Vidal. (engkala, kalangkala) is a fruit-producing plant useful as a potential medi... more Litsea garciae Vidal. (engkala, kalangkala) is a fruit-producing plant useful as a potential medicinal plant and food. The availability of seedlings is a must if their potential is to be developed. The study aimed to evaluate the formation and growth of roots and shoots of L. garciae shoot cuttings in response to growth regulators and arbuscular mycorrhizal fungi (AMF) inoculation. The study used a factorial experiment with a completely randomized design. The treatments tested were growth regulators (without and with rootone-F) and AMF inoculation (without and with AMF). The shoot cuttings were planted in a mixture of cocopeat and husk charcoal (2:1 v/v) and placed in a propagation box in a screen house for 12 weeks. The live percentage, the percentage of callus cuttings, the percentage of rooted cuttings, and the percentage of cuttings sprouting all shoot cuttings planted reached 100%. The interaction between rootone-F and AMF had no significant effect on initiating root and shoot ...
JMM (Jurnal Masyarakat Mandiri)
Abstrak: Desa Malikian Kecamatan Mempawah Hilir, Kabupaten Mempawah adalah salah satu desa pengha... more Abstrak: Desa Malikian Kecamatan Mempawah Hilir, Kabupaten Mempawah adalah salah satu desa penghasil kelapa di Kalimantan Barat. Selama ini kelapa diolah menjadi kopra, dengan nilai jual yang rendah. Sementara jika kelapa diolah menjadi virgin coconut oil (VCO) harga jual akan meningkat 5-12 kali lebih tinggi dari kopra. Kegiatan pengabdian ini bertujuan untuk meningkatkan pengetahuan dan keterampilan masyarakat dalam membuat VCO untuk diversifikasi produk minyak kelapa, sehingga berpotensi meningkatkan pendapatan. Metode yang digunakan adalah pelatihan dengan tahapan: penyampaian materi, diskusi, dan praktek langsung membuat VCO. Mitra sebagai peserta pelatihan adalah ibu-ibu anggota PKK yang berjumlah 25orang. Hasil evaluasi menunjukkan bahwa kegiatan pelatihan diterima positif oleh mitra. Pengetahuan dan keterampilan masyarakat dalam membuat VCO meningkat 76,5% dari 21,5% sebelum pelatihan menjadi 98% setelah mengikuti pelatihan. Jika masyarakat konsisten melakukan diversifikasi ...
JURNAL HUTAN LESTARI
Kembang telang leaf extract is antimicrobial controlling pathogenic fungi in vitro. The purpose o... more Kembang telang leaf extract is antimicrobial controlling pathogenic fungi in vitro. The purpose of the study was to determine the ability of the kembang telang leaf extract as an inhibitor of the growth of fungi that cause root rot and the concentration of the extract that was most effective. The research was carried out in the Silviculture laboratory Faculty of Forestry Universitas Tanjungpura for three months. The experimental method used a completely randomized design with treatments consisting of four concentrations, namely 0%, 3%, 6%, and 9%, with three replications. Telang flower leaf extract can inhibit Ganoderma sp. An inhibition zone looks more apparent than the Telang flower leaf extract area. The growth of fungal growth at the lowest concentration of 3% is the same as effectively inhibiting the growth of Ganoderma sp. The research results imply that the flower telang leaf extract has the potential as an antifungal against the Ganoderma sp. Keywords: antimicrobial, ex...
IOP Conference Series: Earth and Environmental Science
Tailings of ex-gold mines leave several environmental damage problems. Environmental damage cause... more Tailings of ex-gold mines leave several environmental damage problems. Environmental damage causes disruption of microorganisms including bacteria. The revegetation of ex-gold mine tailings in Menjalin sub-district, Landak district, West Kalimantan has begun by local communities using agricultural crops. Women as farmers have an important role in the tailing revegetation process using agricultural crops. Therefore, women can help improve the tailings ecosystem as well as the family economy. The objective of the study was to detect the presence and density of bacterial populations in the rhizosphere of the revegetation crops. The research was conducted by survey method. Soil samples were taken compositely from the rhizosphere of four species of agricultural crops cultivated in tailings, i.e: Capsicum frutescens L., Solanum melongena, Ipomoea batatas L., and Manihot utilissima. The results showed that soil bacteria found growing well in the rhizospheres of four species crops. Two gene...
Jurnal Hutan Lestari: Jurnal Penelitian Kehutanan, Jun 17, 2022
Kratom cultivation can be done in a generative and vegetative way, but to do it vegetatively, it ... more Kratom cultivation can be done in a generative and vegetative way, but to do it vegetatively, it must be use PGR for root growth. The purpose of the study was to determine the best part of branch cuttings for kratom cultivation by giving PGR Rootone-F. The research was conducted by factorial experimental method with a completely randomized design (CRD) consisting of 2 factors, namely: kratom trunk branch with 3 factor levels namely the upper, middle and bottom and Rootone-F with 2 factor levels, namely with and without Rootone-F. Each treatment was repeated 10 times. The results showed that the upper, middle and lower of kratom trunk branches produced the same effect on the growth of kratom cuttings. The application of PGR Rootone-F was significantly able to increase the growth of the number and length of roots, the number of leaves and the percentage of survival compared to cuttings that were not given Rootone-F. Based on these results, kratom cultivation can be carried out vegetatively using branch cuttings with the application of Rootone-F as much as 100 ppm.
Jurnal Hutan Lestari: Jurnal Penelitian Kehutanan, Dec 14, 2022
Diversity of orchid species is a natural biological wealth that needs to be disclosed as the carr... more Diversity of orchid species is a natural biological wealth that needs to be disclosed as the carrying capacity of an area as well as supporting educational and research activities. This research aims to measure the level of diversity of natural orchid species found in the Gunung Melintang Nature Tourism Park region. The research was conducted in January 2020 using a survey method with 15 plots double sampling technique with a size of 20 m x 20 m. The data analysis were Importance Value Index (INP), Dominance index (C), Index of Wealth Species (D), Diversity Index (H'), Abundance Index (e) and Species Similarity Index (IS). The results showed the most dominant species is Bromheadia finlaysoniana with an INP is 14,394. The value of species divercity index is 1.0277, which mean that it had moderate diversity. Beside that, the value of dominance index is 0,1098 (no species dominate), species richness index is 5,245 (high) and an abundance index is 0,8967.
Biodiversitas Journal of Biological Diversity
Carbon storage in tropical peat ecosystems over thousands of years, especially within peat soil, ... more Carbon storage in tropical peat ecosystems over thousands of years, especially within peat soil, is in huge quantity. Degradation of peat ecosystems is generally caused by human factors, whether intentional or not, damaging the carbon storage function of tropical peatlands, where forest clearing, drainage development, and burning of land converted to agriculture and plantations result in significant greenhouse gas emissions. Tropical peat in the Kubu Raya District of West Kalimantan, which has a relatively large area of peat, has been degraded as a cause of uncontrolled drainage and land fires caused by a lack of management after its forest cover was lost. The main impact is an increase in peat CO2 emissions due to changes in land use, especially lowering groundwater levels. Subsequently, the subsidence process also occurs after land clearing. This study aims to obtain the proportion of carbon biomass loss due to the CO2 emission process from reducing the peat layer due to subsidence. Data collection was executed for two years, where CO2 emission was monitored biweekly , and the subsidence was measured bimonthly. The results demonstrate groundwater levels dictate the peat CO2 emission and subsidence. Lowering GWL 30 to-85 cm increases CO2 by more than three times, approximately. The rate of peat subsidence shows similar trends to the emission. The proportion of peat biomass loss on CO2 emission was between 58.9 to 73.5%, except for GWL ~5 cm, where the proportion was the highest at 82%. The results of this study are beneficial in explaining the part of the subsidence that impacts the sources of CO2 emissions from the smallholder oil palm and GWL management on peatlands.
JURNAL HUTAN LESTARI
This research aims to identify and obtain data on morphological characteristics of bamboo in the ... more This research aims to identify and obtain data on morphological characteristics of bamboo in the Engkadik Pade Village Forest of Air Basar District of Landak Regency. The study was conducted for 3 weeks in the field, using the survey method (cruising), data retrieval techniques by creating contour cutting paths, the laying of the first path is done intentionally or purposive sampling, The area of observation is 1 ha. Based on data obtained in the field there are 7 species of bamboo from 4 bamboo genera found. Bamboo munti (Gigantochloa hasskarlaiana), bamboo buluh and bamboo kuning (Schizostachyum brachyladum), bamboo pasa (Schizostachyum flexuosum), bamboo tarek (Gigantochloa levy), bamboo anyang (Dendrocalamus hirtellus), and bamboo batu (Dinochloa sp). The morphological characteristics of bamboo in Engkadik Pade village forest have their own uniqueness and have differentiators of each species, among them bamboo pasa (S. flexuosum) has a small stem and smelt with wavy cheese feath...
Jurnal Hutan Lestari: Jurnal Penelitian Kehutanan, Apr 21, 2022
Ubah merah (Syzygium lineatum (DC) Merr) is one of indigenous tree type. Its population have been... more Ubah merah (Syzygium lineatum (DC) Merr) is one of indigenous tree type. Its population have been decreased with the increase of peat swamp forest degradation as the effect of land conversion and forest fire. The seed multiplication technique of S.lineatum vegetatively can be done with shoot cutting. This research was aimed to get the composition of root stimulants with suitable of growth media for growth of S.lineatum shoot cutting. The experiment of this research used split plot design with basic design of completely randomized design (CRD). The treatment as main plot was growth media cocopeat (M1) and cocopeat + husk char 2:1(M2) and as sub plot was root stimulants control (Z1) rootone-F 3.5 g (Z2) and wood vinegar 4% (Z3) with five replications in each treatments combination. The dependent variables consisted of primary root total, secondary root total, primary root length, shoot length, leaf total, and percentage of living. The results showed that the root stimulants and growth...
Jabon consists of white Jabon Anthocephalus cadamba and Red Jabon A. macrophylla. Jabon is a tree... more Jabon consists of white Jabon Anthocephalus cadamba and Red Jabon A. macrophylla. Jabon is a tree species that have high prospects for development in industrial plantation forest development. Good quality white seedlings can be obtained through certified seedlings, intensive maintenance, and optimizing the growing media's nutrient content. One way that can be used to improve nutrients in the media is by adding organic material derived from manure and cocopeat. This study aims to obtain the right proportion of the mixture between RYP soil, cocopeat, and chicken manure to support Jabon seedlings' growth in the nursery. The method used was a completely randomized design (CRD). The treatments were consisted of 5 mixtures of FMD: cocopeat: chicken manure (v/v/v) with the proportions: (1) control (RYP), (2) 7: 1: 4, (3) 7: 2: 3, (4) 7: 3: 2, and (5) 7: 4: 1, with 5 replications. The variables observed in this study were height increase, increase in diameter, increase in the number...
Indonesia is a country with the richest orchids spesies in the world. Forest degradation could be... more Indonesia is a country with the richest orchids spesies in the world. Forest degradation could be one of the factors that threatens the existence of orchids in the tropial forest. The purpose of this study was to search information on forest degradation impact on epiphytic orchid populations as well as the characteristics of the orchid site condition in the areal Ambawang Mountain Kubu Raya Regency. This study used survey method with stratified sampling technique on forest cover condition. Sampling area was 3 of a 40 m x 40 m, plot which divided into 4 sub plots of 20 m x 20 m. The results found 17 species of orchids with an 98 individual. There were 14 spesies orchid host trees with 130 number of trees, with three characters of bark on the host tree: rough, medium, and slightly smooth bark. Among 3 characters tree-bark type, the most orchid was found on rough-bark type. It also found differences in the number of population of orchid species at each level of canopy closure. Mute o...
The purpose of this study is to obtain data on the diversity of termite species found in peatland... more The purpose of this study is to obtain data on the diversity of termite species found in peatland at using on various water table levels. The method used in this research is survey, transect method with plot based on water level of 30, 40, 50 and 60 cm which previously been established in the field. The plots were made parallel to the ditch with a distance of ± 2 m from the transect. The size of one plot was 100 m x 2 m and made into 20 plots with the size of 5 m x 2 m so that the total of all plots is 80 plot. In each plot, the observation and searching of termites manually by digging the soil as deep as ± 20 cm. Termite criteria sampled were caste soldiers termite with red head trait and taken as much as 5-10 termites. Sampling of termites should be done for one hour per one observation plot. The termite samples obtained are then inserted into glass vials containing alcohol and further identification was done in the laboratory. The study found 3 species of termites namely Coptoter...
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Papers by Dr. Ir. Wiwik Ekyastuti, M.Si