Papers by Abban Putri Fiqa
Structure and carbon stock of vegetation in the arboretum area of the Purwodadi Botanic Garden
AIP conference proceedings, 2024
Biodiversitas, Mar 24, 2020
Gyrinops versteegii (Gilg) Domke is one of the agarwood-producing plants native to eastern Indone... more Gyrinops versteegii (Gilg) Domke is one of the agarwood-producing plants native to eastern Indonesia with high level of exploitation in its natural habitat. Despite being protected by listing it in the CITES Appendix II, anecdotal evidence suggests that G. versteegii population continues to decline. Yet, there is limited empirical data to support such premise. This study was conducted to evaluate the abundance, population structure and floristic importance position of G.versteegii within vegetation community in its natural habitat in Nggalak Forest, Flores. Vegetation analysis was carried out at four growth stages: mature, immature, saplings, and seedlings stage. The results showed that G. versteegii was abundant in its natural habitat in Nggalak Forest in juvenile stages (i.e. seedlings to immature), but not in mature stage. Population densities for seedlings, saplings and immature stage were 313, 150 and 22 individuals per hectare respectively. G. versteegii also hold important position in the community structure, ranks 28 th , 6 th , and 14 th for seedlings, saplings and immature stages respectively in term of importance value index. The high abundance and floristic importance of G. versteegii at the juvenile stages, but not at mature stages, indicates that rampant and over-exploitation of mature plants is likely the major threat to its population. We recommend to replicate similar study in other G. versteegii distribution areas. If similar pattern is found, conservation intervention in the form of protection of its natural population to sustain the juveniles to grow until mature stage may be required along with encouraging cultivation and reintroduction to enhance the population.
Dampak Intervensi Spesies Eksotik Pada Keberhasilan Revegetasi Area Konservasi Sumber Janitri, Batu Jawa Timur
Sumber Janitri merupakan salah satu mata air yang terletak di Kota Batu, Jawa Timur, yang selama ... more Sumber Janitri merupakan salah satu mata air yang terletak di Kota Batu, Jawa Timur, yang selama ini dipergunakan oleh penduduk setempat untuk mengairi ladang sayur milik mereka. Akibat konversi dari hutan alami menjadi ladang sayur, jumlah debit air dari Sumber Janitri semakin menurun. Pada tahun 2004, dilakukan revegetasi di area konservasi Sumber Janitri oleh pemerintah daerah, bekerjasama dengan Kebun Raya Purwodadi. Permasalahan yang dihadapi pada area konservasi Sumber Janitri adalah tumbuhnya spesies eksotik sebagai contohnya adalah Ageratina riparia dan Penisetum purpureum, yang mendominasi tumbuhan bawah pada area revegetasi. Mendominasinya beberapa tanaman eksotik yang bersifat invasif ini dikhawatirkan akan mengganggu stabilitas ekosistem di area konservasi Sumber Janitri. Berdasarkan hal tersebut dilakukan penelitian yang bertujuan untuk mengetahui efektivitas revegetasi yang telah dilakukan di area konservasi Sumber Janitri terkait keberadaan spesies eksotik dalam kawasan, berdasarkan nilai jasa layanan lingkungan yang dihasilkannya, dibandingkan dengan reference area sebagai kontrol positif dan lahan pertanian di sekitar area sebagai kontrol negatif. Penelitian dilakukan dalam dua tahap, tahap pertama adalah eksplorasi profil masing-masing area penelitian dengan parameter yang diamati meliputi kualitas vegetasi dengan variabel yang diukur adalah dari indeks diversitas (H’), kekayaan jenis (R), keberadaan spesies eksotik berupa tutupan tanaman eksotik dalam kawasan dan degree of exotism. Selain itu diamati pula struktur vegetasi di area tersebut, meliputi nilai kerapatan, dominansi dan frekuensi masing-masing vegetasi dan tutupan kanopi dalam plot pengamatan, serta evaluasi. Selain itu, diamati pula kondisi biofisik tanah (BI, BJ, porositas, C-organik dan bahan organik) pada masing-masing plot pengamatan. Layanan ekosistem yang dihasilkan (stok karbon, infiltrasi tanah, spesies yang menjadi habitat epifit, spesies pakan herbivora, dan kadar air) juga diamati sebagai bahan evaluasi terhadap efektivitas revegetasi yang telah dilakukan. Dalam mengevaluasi keberhasilan, dilakukan pengamatan terhadap fluktuasi debit selama 1 tahun sebagai data tambahan. Penilaian atas keberhasilan revegetasi juga dilihat dari bagaimana persepsi masyarakat mengenai keberhasilan revegetasi. Hasil pengamatan yang dilakukan kemudian dibandingkan antar lokasi dengan MANOVA dan juga dibandingkan dengan hasil pemantauan yang dilakukan tahun 2010 lalu, untuk mengetahui variasi keberhasilan revegetasi. Pengukuran layanan ekosistem ini kemudian dianalisis dengan biplot dan cluster untuk mengetahui sejauh mana profil area revegetasi menyerupai karakter hutan sekunder sebagai reference area. Penelitian tahap kedua dilakukan dengan pembuatan model dari seluruh variabel profil ekosistem yang telah diukur sebelumnya untuk mengetahui pengaruh intervensi spesies eksotik terhadap kualitas layanan ekosistem yang dihasilkan. Hasil analisis dengan model dan hasil Gap dan root cause analysis kemudian akan menjadi dasar penyusunan rekomendasi pengelolaan area konservasi selanjutnya. Hasil penelitian menunjukkan bahwa pada parameter struktur vegetasi, area revegetasi memiliki kerapatan yang jauh lebih rendah bila dibandingkan dengan hutan sekunder, begitupula dengan nilai tutupan kanopinya. Pada parameter kualitas vegetasi, area revegetasi memiliki nilai indeks diversitas pohon, belta, dan tumbuhan bawah yang ix lebih tinggi bila dibandingkan dengan hutan sekunder dan nilainya stabil bila dibandingkan pengamtan tahun 2010, akan tetapi memiliki jumlah dan tutupan spesies eksotik yang lebih besar. Pada parameter kualitas biofisik tanah, area revegetasi memiliki nilai BI dan BJ yang lebih baik daripada di lahan pertanian, namun nilainya masih berbeda signifikan terhadap niali biofisik tanah di hutan sekunder. Akan tetapi, bahan organik tanah dan kandungan C-organik tanahnya paling rendah diantara ketiga area yang diamati.. Bagaimanapun, nilai yang terukur selama pengamatan tahun 2016 menunjukkan perbaikan daripada yang ditunjukkan saat pengamatan tahun 2010 yang lalu. Parameter jasa layanan lingkungan berupa stok karbon dalam kawasan, menunjukkan bahwa area revegetasi memiliki stok karbon total dalam kawasan yang paling rendah, hal ini terkait dengan rendahnya kerapatan pohon dalam kawasan dan rendahnya kandungan C-organik dalam tanahnya. Kandungan kadar air dalam tanah di area revegetasi nilainya bahkan tidak berbeda signifikan dengan di lahan pertanian, begitu juga dengan nilai infiltrasi tanahnya. Kondisi biofisik tanah di area pertanian yang cukup baik juga ditunjang dari perlakuan yang diberikan oleh petani pada area tersebut. Hasil evalusi efektivitas keberhasilan restorasi berdasarkan persepsi masyarakat dan data fluktuasi debit air selama satu tahun, menunjukkan bahwa masyarakat beranggapan revegetasi yang dilakukan di area konservasi Sumber Janitri cukup efektif. Hal ini dapat dilihat dari mata air yang debitnya tidak pernah mati…
Journal of Tropical Life Science, Jan 31, 2017
The hydrological performance of individual tree can be estimated by measuring the stem flow, thro... more The hydrological performance of individual tree can be estimated by measuring the stem flow, throughfall and rainfall interception. Water distribution through tree canopy is affected by tree architectural model and another tree's morphology. This research was done in order to predict the most appropriate tree species that is suitable on soil and water conservation. This research was conducted in Purwodadi Botanic Garden during the rainy season on January 2014 to March 2015, in order to examine the interception rate, throughfall and stemflow on some selected local plants i.e Syzygium polyanthum, Diospyros blancoi, Schleichera oleosa, Madhuca longifolia, and Canarium vulgare. Other observation that support the data, was also measured i.e. Leaf Area Index (LAI), crown depth, leaf size, Diameter of Breast Height (DBH), and height of tree on each species. Results showed that Diospyros blancoi has the highest interception value, which is 53 %, followed by C. vulgare 47.4%, S. oleosa 46.9 %, M. longifolia 38.6%, and S. polyanthum 35.6% respectively. Under the heavy rain, D. blancoi, which has the highest LAI value, also showed the best performance in the rainfall interception value and showed significantly different among others. Canopy interception and stem flow is related to rainfall, the higher the rainfall, the higher the throughfall and the stemflow among species. Morphology on each species, gives the different effect on their partitioning rainfall value.
Biodiversitas, Jun 5, 2021
Orophea (Annonaceae) have various benefits and play important roles in lowland forest structures.... more Orophea (Annonaceae) have various benefits and play important roles in lowland forest structures. Due to their importance, various Orophea species currently require identification for research and conservation purposes. One of many important variables for such purpose is leaf morphometrical features. This study aimed to investigate leaf morphometrical variations, measure morphometrical similarities, and identify determinant morphometrical traits for species identification in Orophea spp. As many as 23 living plant specimens of Orophea spp. cultivated in Purwodadi Botanic Gardens (belongs to 4 species: Orophea celebica, O. chlorantha, O. enneandra, O. hexandra and an unidentified Orophea sp.) were observed. Twelve measured leaf morphometrical traits in this study were leaf length and width, petiole length, distance from leaf base to the widest part of the leaf, number of secondary veins, apex and base shape, leaf area, length of leaf margin, length to width ratio, leaf roundness and slimness indices. Data were analyzed using multiple one-way ANOVA, Hierarchical Cluster and Principal Component Analyses from within R. The results highlighted that O. hexandra was the most distinguishable species with number of secondary veins, length to width ratio, and leaf slimness as the most distinct characters. The unidentified species of Orophea sp. exhibited morphometrical characters similar to O. chlorantha. No distinct leaf morphometrical traits were able to be identified as determinant characters to each species. Thus, suggesting leaf morphological traits analyses to be used only as a supporting component for plant identification, while still paying attention to the plant's generative characters.
Biodiversitas, Jul 14, 2022
Foliar epidermal and stomatal features are widely used as plant microscopic traits either from ta... more Foliar epidermal and stomatal features are widely used as plant microscopic traits either from taxonomic or ecological standpoints. The studies on woody plants in the Malesian region which serve as the essential component of tropical ecosystems are still limited. Here we conduct a comparative study on stomatal and epidermal features of twelve important woody plant species from Indonesia using a descriptive method based on the Light Microscope and Scanning Electron Microscope micrographs. The shape, size and stomatal type were revealed in all species studied. Moreover, quantitative features were measured including epidermal cell length and width, solidity (S), aspect ratio (AR), and stomatal index (SI). The study results showed a variation in foliar epidermal and stomatal traits across the species studied. Due to the presence of trichomes and waxes on the abaxial side, not all species can be measured for their stomatal index and epidermal cells. Syzygium polyanthum has the highest stomatal index and cells with complex interlocking shapes, which provide an effective strategy for reducing mechanical stress on epidermal cell walls, making this native species predicted to adapt well when it was planted in habitats with similar environmental conditions.
Biodiversitas, Feb 7, 2020
Lestari DA, Fiqa AP. 2020. Environmental factors influence on flowering and fruiting period of se... more Lestari DA, Fiqa AP. 2020. Environmental factors influence on flowering and fruiting period of selected essential oil plants from Annonaceae. Biodiversitas 21: 910-921. Many species of Annonaceae family in tropics produce fragrances, due to the active ingredients for essential oils. Since the abundant of flower and fruit production, basic knowledge of flowering and fruiting periods needs to be known. The aim of this study was to determine influence of environmental factors to selected essential oil plants flowering and fruiting period from Annonaceae family, i.e. Artabotrys suaveolens, Cananga odorata, Desmos chinensis, Dasymaschalon borneense, Fissistigma latifolium, and Xylopia malayana. Observations were made throughout the year during dry and rainy season, with each phase carried out scoring qualitatively based on its abundance in plant canopy. Data on environmental factors (temperature, humidity, and rainfall intensity) were obtained from Registration Unit, Purwodadi Botanic Garden (PBG). Data of flowering and fruiting period were analyzed descriptively using Microsoft Excel, while the influence of environmental factors to flowering and fruiting period was analyzed by Biplot with Past 3.0. statistic program. Flowering period occurred in wet months at the end of year (November-December), while fruiting period occurred in long dry month. Initiation and bloom of flowering were influenced by temperature, while fruiting period was largely influenced by humidity and rainfall intensity, except for C. odorata whose fruiting period was influenced by temperature.
Biodiversitas, Dec 4, 2018
East Kalimantan is the most well-known province in Indonesia with high natural resources, particu... more East Kalimantan is the most well-known province in Indonesia with high natural resources, particularly from the mining sector. While delivering benefits for economic development, coal mining operation negatively affects biodiversity. Effort to mitigate impacts on biodiversity is by establishing an in-situ conservation area inside the coal mining area. This area is preserved in the form of arboretum from existing natural forests. The aim of this research is to identify the importance of conservation area in a mining concession in East Kalimantan regarding its plants' diversity, conservation status, and utilization. The research was conducted by doing vegetation analysis and inventorying plant biodiversity inside the in-situ conservation area by using plot samples. The result showed that the in-situ conservation area protects at least 142 species with a high level of biodiversity on all vegetation phases, indicated by Shannon Wiener diversity indices in which all phase have an index higher than 3. It protects 22 species listed in IUCN Red List of threatened species and contains at least 90 potential plants utilized by traditional Dayak people in their daily life. This study highlights that the conservation area is an important part in mining management to protect biodiversity, and suggest that in-situ conservation area should be preserved by every mining concession.
Biodiversitas, Dec 4, 2018
Mining activities affect environmental qualities including the loss of vegetation cover and the d... more Mining activities affect environmental qualities including the loss of vegetation cover and the damages of physical, chemical and biological properties of soil. As such, regulations enacted by the Indonesian Government state a legal obligation for mining companies to carry out reclamation on post coal mining site. Reclamation is an activity carried out to organize, restore and improve of environmental quality after mining operations to enhance the highly disturbed ecosystem of mined land into ecologically usable state. Yet, there is little body of knowledge on how to monitor the effectiveness of reclamation in improving environmental quality of ex-mining land. Aims of this study are to evaluate of the growth of native tree species planted on various types of reclamation sites in a mining concession in East Kalimantan, and to analyze the most influencing factor of their growth. Growth parameters measured in this research were plant height, stem diameter and branch-free stem height of the planted species. Micro-climatic factors and diversity of understorey plants were also measured as environmental parameters. PCA (Principal Component Analysis) analysis was conducted using PAST 4.0. statistical program. The results shows that reclamation area of post coal mining in the study site which is most suitable for local plant species, especially Shorea balangeran, has a sloping terrain. PCA shows that factor having maximum influence on growth of planted species on the reclamation site is pH of soil. The higher is the soil pH (i.e. less acid), the better is the species growth because the soil conditions in the post-coal mining area tend to be acidic. This research suggests that in post coal mining reclamation using native trees two key factors to enhance growth performance of planted species are sloping terrain so as water is not inundated and soil pH so as it is not too acid.
Biosaintifika: Journal of Biology & Biology Education, Aug 14, 2020
East Nusa Tenggara located in the Wallacea area that has many endemic species. However, the exist... more East Nusa Tenggara located in the Wallacea area that has many endemic species. However, the existence of germplasm diversity in this area has been threatened due to landscape changes and deforestation. The research was conducted to identify floristic composition in Sikka forest area. This research also aimed to compare that plant composition in Sikka forest area on each of the different altitudes, including their diversity richness and environmental factors. Two sampling methods were used, which are Point-Centered Quarter (PCQ) method that applied for trees and nested sampling method 5x5 m 2 for sapling and 2x2 m 2 for ground cover. Measured parameters were Relative Density (RD), Relative Frequency (RF), Relative Coverage/dominance (RC), Important Value Index (IVI), Diversity Index (H'), and Jaccard Similarity Index (J'). Research results showed that the diversity index of each region was relatively low. Plant composition of tree, sapling, and groundcover in three different altitudes was quite different. This result indicates that the plant composition in the Sikka, East Nusa Tenggara is very diverse. The temperature and relative humidity in each altitude area observed was significantly different. One of the endemic species of Flores Island, Eucalyptus urophylla, was only found at 500-700 m asl. There are very limited research on the vegetation diversity held in Flores, East Nusa Tenggara. This research can be the basic for further research in order to explore the potential diversity of flora in this area.
Journal of tropical biodiversity and biotechnology, Apr 19, 2018
East Java's forest has a less ideal area based on predetermined requirements. Therefore rehabilit... more East Java's forest has a less ideal area based on predetermined requirements. Therefore rehabilitation was done to meet these requirements and to improve the quality of existing forests. This research was conducted to identify the character of protected forest in Resort Pemangku Hutan (RPH) Sentul area, about vegetation structure and abiotic factor of lowland forest area with low rainfall. The research was conducted by explorative method with plot making for tree plant, sapling and ground cover to inventory and determine the forest vegetation structure inside the area, also by measuring the environmental parameters (temperature, humidity and light intensity) and making soil sampling to analyze biophysical condition. Data were analyzed descriptively both on vegetation condition and physical condition of land and its environment. The result showed that there were identified 84 species from 39 plant families either as trees, sapling or ground cover, with species of Moraceae as the largest contributor. The diversity index of the three types of vegetation shows a medium categorized, while the index of evenness indicates a good categorized that is close to one. Based on the existence of exotic species, especially on ground cover, within protected forest areas, this area has been degraded although not large. However, the physical condition of the soil and environmental conditions in the forest still indicate that this area is still quite good when used as a reference area on rehabilitation program with similar geographical conditions.
Java Island low land forest is known for their plants diversity, their species and their function... more Java Island low land forest is known for their plants diversity, their species and their function. Kluwih (Artocarpus altilis Park. ex Zoll. Forsberg) and Black Bamboo (Gigantochloa atroviolaceae Widjaja), are Javanese local plants, that surely has important roles in ecosystem as land and water source conservation. This research was done to find the understanding of plants and their relation with land and water source conservation. Observed parameters were root and canopy storage, whether their function on land and water source conservation, investigated by their canopy and leaf litter interception, also stem flow of the rainfall. The rainfall observation was done in the Purwodadi Botanic Garden, whether root, plant and canopy storage were observed around the natural water source. Data were analyzed descriptively based on their root and canopy storage. Canopy, leaf litter interception and stem flow analyzed with MS Excel 2007. Result showed that kluwih has a round canopy and taproot type. Black bamboo with its fibrous root and hairy stem character could keep the water loss 84.63415% of rainfall, better than kluwih that only could keep 51.00685%. Both of them had an ability to keep the water loss and conserved land from eruption and kept save the water from the rainfall.
Jurnal Agro, Jul 31, 2021
Uwi (Dioscorea alata L.) merupakan jenis tanaman umbi-umbian berpotensi nutrisi. Namun pemanfaata... more Uwi (Dioscorea alata L.) merupakan jenis tanaman umbi-umbian berpotensi nutrisi. Namun pemanfaatannya sebagai bahan pangan alternatif masih jarang, karena keterbatasan informasi potensi nutrisi dan sistem budidaya. Penelitian ini bertujuan untuk menentukan faktor-faktor lingkungan yang berpengaruh terhadap pertumbuhan uwi. Penelitian dilakukan di lahan percobaan di Kabupaten Pasuruan, pada tujuh aksesi yang dipilih berdasarkan hasil penelitian sebelumnya, yaitu aksesi nomor 28, 36, dan 86 (Pasuruan), 42 dan 43 (Nganjuk), 57 dan 66 (Malang). Parameter lingkungan yang diamati meliputi suhu udara, kelembaban udara, intensitas cahaya, pH tanah, kelembaban tanah, jumlah dan jenis gulma. Hasil pengamatan dianalisis secara deskriptif dan statistik dengan uji Biplot menggunakan software Past 3. Hasil penelitian menunjukkan bahwa intensitas cahaya dan jumlah jenis gulma merupakan faktor lingkungan yang paling berpengaruh pada pertumbuhan tanaman uwi. Terdapat tiga grup aksesi tanaman uwi berdasarkan perbedaan faktor lingkungan yang mempengaruhi pertumbuhannya. Aksesi 42, 43 dan 57 dipengaruhi oleh suhu dan kelembaban udara, aksesi 28, 36 dan 66 dipengaruhi oleh intensitas cahaya dan aksesi 86 dipengaruhi oleh pH tanah. Analisis deskriptif menunjukkan bahwa sebagian besar gulma yang tumbuh merupakan tanaman invasif yang mempengaruhi pertumbuhan tanaman komoditas. Aksesi nomor 42, 43 dan 57 direkomendasikan untuk dibudidayakan di lahan sub optimal dengan kondisi pH asam dan minim air. Kata Kunci : aksesi terpilih, Dioscorea alata L., faktor biotik, faktor abiotik, pertumbuhan.
Jurnal Penelitian Hutan dan Konservasi Alam, Jun 1, 2021
Kontribusi penulis: APF: melakukan pengambilan data, analisis data, menginterpretasi dan menulis ... more Kontribusi penulis: APF: melakukan pengambilan data, analisis data, menginterpretasi dan menulis draft karya tulis dan SS: melakukan pengambilan data, analisis data, menginterpretasi dan menulis draft karya tulis.
Jurnal Penelitian Kehutanan Wallacea, Aug 25, 2021
Keberhasilan suatu proses reklamasi dapat dievaluasi dengan menghitung stok karbon di kawasan ter... more Keberhasilan suatu proses reklamasi dapat dievaluasi dengan menghitung stok karbon di kawasan tersebut. Stok karbon merupakan salah satu bentuk jasa ekosistem yang dapat dinilai secara kuantitatif. Oleh karena itu, perlu kajian pada proses reklamasi di area pasca tambang batubara di Kalimantan Timur dan membandingkannya dengan area referensi. Penelitian ini bertujuan untuk mengetahui nilai stok karbon pada tiga tipe kawasan reklamasi pasca tambang batubara (Tipe A: tanpa pohon naungan, Tipe B: dengan satu spesies pohon naungan, Tipe C: dengan lebih dari satu spesies pohon naungan), dan membandingkannya dengan kawasan hutan alam sebagai area referensi. Penelitian dilakukan dengan membuat plot di dalam area referensi dan di area reklamasi, untuk tegakan tingkat pohon, tiang, dan pancang. Analisis dilakukan secara deskriptif dan statistik untuk tiap tipe reklamasi mengacu pada kawasan konservasi sebagai area referensi. Hasil penelitian menunjukkan bahwa reklamasi tipe C, dengan usia tanam yang lebih tua, memiliki stok karbon yang lebih tinggi dari pada tipe B dan tipe A yaitu berturut-turut: 51,9 t C/ha, 37,8 t C/ha, dan 2,9 t C/ha. Namun cadangan karbon di ketiga tipe kawasan reklamasi tersebut masih jauh lebih rendah bila dibandingkan kawasan konservasi yang mencapai 296,8 t C/ha. Dengan demikian, semakin tua dan beragam spesies yang ditanam pada suatu tanaman di areal reklamasi, semakin tinggi simpanan karbon yang disimpan. Selain itu, penanaman pohon naungan juga dapat membantu meningkatkan nilai simpanan karbon pada suatu kawasan reklamasi.
Biodiversitas, Jul 14, 2022
Foliar epidermal and stomatal features are widely used as plant microscopic traits either from ta... more Foliar epidermal and stomatal features are widely used as plant microscopic traits either from taxonomic or ecological standpoints. The studies on woody plants in the Malesian region which serve as the essential component of tropical ecosystems are still limited. Here we conduct a comparative study on stomatal and epidermal features of twelve important woody plant species from Indonesia using a descriptive method based on the Light Microscope and Scanning Electron Microscope micrographs. The shape, size and stomatal type were revealed in all species studied. Moreover, quantitative features were measured including epidermal cell length and width, solidity (S), aspect ratio (AR), and stomatal index (SI). The study results showed a variation in foliar epidermal and stomatal traits across the species studied. Due to the presence of trichomes and waxes on the abaxial side, not all species can be measured for their stomatal index and epidermal cells. Syzygium polyanthum has the highest stomatal index and cells with complex interlocking shapes, which provide an effective strategy for reducing mechanical stress on epidermal cell walls, making this native species predicted to adapt well when it was planted in habitats with similar environmental conditions.
KARAKTERISASI TIPE KANOPI DAN PERAKARAN TUMBUHAN LOKAL UNTUK KONSERVASI TANAH DAN AIR STUDI KASUS PADA KLUWIH Artocarpus altilis Park Ex Zoll Forsberg DAN BAMBU HITAM Gigantochloa atroviolaceae Widjaja, Feb 2, 2012
Java Island low land forest is known for their plants diversity, their species and their function... more Java Island low land forest is known for their plants diversity, their species and their function. Kluwih (Artocarpus altilis Park. ex Zoll. Forsberg) and Black Bamboo (Gigantochloa atroviolaceae Widjaja), are Javanese local plants, that surely has important roles in ecosystem as land and water source conservation. This research was done to find the understanding of plants and their relation with land and water source conservation. Observed parameters were root and canopy storage, whether their function on land and water source conservation, investigated by their canopy and leaf litter interception, also stem flow of the rainfall. The rainfall observation was done in the Purwodadi Botanic Garden, whether root, plant and canopy storage were observed around the natural water source. Data were analyzed descriptively based on their root and canopy storage. Canopy, leaf litter interception and stem flow analyzed with MS Excel 2007. Result showed that kluwih has a round canopy and taproot type. Black bamboo with its fibrous root and hairy stem character could keep the water loss 84.63415% of rainfall, better than kluwih that only could keep 51.00685%. Both of them had an ability to keep the water loss and conserved land from eruption and kept save the water from the rainfall.
Biodiversitas Journal of Biological Diversity, 2018
Fiqa AP, Fauziah, Lestari DA, Budiharta S. 2019. The importance of in-situ conservation area in m... more Fiqa AP, Fauziah, Lestari DA, Budiharta S. 2019. The importance of in-situ conservation area in mining concession in preserving diversity, threatened and potential floras in East Kalimantan, Indonesia. Biodiversitas 20: 198-210. East Kalimantan is the most well-known province in Indonesia with high natural resources, particularly from the mining sector. While delivering benefits for economic development, coal mining operation negatively affects biodiversity. Effort to mitigate impacts on biodiversity is by establishing an in-situ conservation area inside the coal mining area. This area is preserved in the form of arboretum from existing natural forests. The aim of this research is to identify the importance of conservation area in a mining concession in East Kalimantan regarding its plants’ diversity, conservation status, and utilization. The research was conducted by doing vegetation analysis and inventorying plant biodiversity inside the in-situ conservation area by using plot sam...
Biodiversitas Journal of Biological Diversity, 2020
Gyrinops versteegii is one of the agarwood-producing tropical plants that is distributed in the L... more Gyrinops versteegii is one of the agarwood-producing tropical plants that is distributed in the Lesser Sunda Islands to Sulawesi, Moluccas (Maluku), and Papua. The natural population of Gyrinops versteegii (Gilg.) Domke is widely exploited, making it being listed in CITES Appendix II. Despite largely exploited, information regarding the distribution of G. versteegii to reveal the habitat characteristics of its natural population is limited. The aims of the research were (i) to investigate the habitat characteristics of the distribution of G. versteegii in term of vegetation community, as well as soil and microclimate variables in its natural habitat in western part of Flores Island, and (ii) to study the relationship between its occurrence and ecological factors. The research was conducted in one community forest and three natural forests in the districts of Manggarai and West Manggarai, Flores Island, East Nusa Tenggara Province. Data on vegetation, soil properties and microclimates were collected by establishing 73 observation plots across the four studied areas. Data were analyzed to reveal vegetation composition and structure where G. versteegii occurred, the dispersion pattern, and relationship between its occurrence and ecological factors. Our study revealed that G. versteegii populations at four studied areas in Flores Island were distributed in a broad range of habitat characteristics with varying vegetation compositions and structures, canopy covers as well as soil and microclimates variables. The local/metapopulations of G. versteegii in these areas can be dispersed in clumped or uniform pattern. Nonetheless, some ecological variables might be important for the abundance of this species including soil texture, soil pH, C organic and Soil Organic Matters (SOM). The results of this study suggest a promising opportunity for the conservation efforts of G. versteegii through the possibility of planting this species in various land management including planted in monoculture system, polyculture system (e.g. home garden and agroforestry) as well as reintroduced into species-rich natural forest.
AFRICAN JOURNAL OF AGRICULTURAL RESEEARCH, 2011
In this study, seeds from 51 bean genotypes obtained from the Izmir Aegean Agricultural Research ... more In this study, seeds from 51 bean genotypes obtained from the Izmir Aegean Agricultural Research Institute were multiplied under ecological conditions of the Samsun province in 2006. Similarities and differences in terms of morphological variation were identified for 16 genotypes carrying the phenological, morphological and pod characteristics of fresh bean in 2007. It was determined that the length of time between sowing to sprouting had an important relationship and a positive correlation with the date of initial flowering, 50% flowering and pod width in the correlation matrix. In the principle component analysis (PCA), the two initial PC axis explained the 53.9% of the total variation. The cluster analysis was based on 19 parameters. Five groups were obtained and shown in a dendrogram. High levels of variation between bean genotypes were detected.
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Papers by Abban Putri Fiqa