Asep Sadili

Bio: Asep Sadili is an academic researcher from Indonesian Institute of Sciences. The author has contributed to research in topic(s): Species diversity & Basal area. The author has an hindex of 4, co-authored 14 publication(s) receiving 48 citation(s).

Opportunities and challenges for an Indonesian forest monitoring network

Abstract: Permanent sampling plots (PSPs) are a powerful and reliable methodology to help our understanding of the diversity and dynamics of tropical forests. Based on the current inventory of PSPs in Indonesia, there is high potential to establish a long-term collaborative forest monitoring network. Whilst there are challenges to initiating such a network, there are also innumerable benefits to help us understand and better conserve these exceptionally diverse ecosystems.

Structure and composition of subalpine summit habitats on Mt. Gede-Pangrango complex, Cibodas Biosphere Reserve, West Java, Indonesia

Abstract: SADILI, A., KARTAWINATA, K., KARTONEGORO, A., SOEDJITO, H. & SUMADIJAYA, A. 2009. Structure and composition of subalpine summit habitats on Mt. Gede-Pangrango complex, Cibodas Biosphere Reserve, West Java, Indonesia. Reinwardtia 12 (5): 391–404. We undertook a phytosociological analysis of the subalpine herbaceous and shrubby vegetation at the Mandalawangi and Suryakencana meadows and the scrub at the Crater Side at the tops of Mt. Gede and Mt. Pangrango in the Cibodas Biosphere Reserve. We recorded 30 species of 18 families of saplings, shrubs, seedlings and herbs in 78 quadrats with a total area of 7,800 m2. Anaphalis javanica, a woody tall herb and long-lived pioneer was the dominant species in the sapling and shrub stratum, while Isachne pangerangensis, Tripogon exiguus and Carex verticillata were prevalent in the seedling and herb stratum at Mandalawangi and Suryakencana. Stunted shrub is Vaccinium varingaeifolium, dominant in the Crater Side scrub. Based on the importance values, the Mandalawangi meadow may be designated as the Anaphalis javanica-Isachne pangerangensis community type, the Suryakencana meadow as Anaphalis javanica-Tripogon exiguus community type and the Crater Side scrub as Vaccinium varingiaefolium-Seliguea feei community type. The similarity indices between Mandalawangi and Suryakencana community types were very high (>75 %) while those between the Crater Side and Mandalawangi and the Crater Side and Suryakencana were very low (<10 %). Poor soil conditions and fire seem responsible for the perpetual existence of A. javanica.

Jenis Anggrek (Orchidaceae) di Tau Lumbis, Nunukan, Propinsi Kalimantan Timur: Sebagai Indikator Terhadap Kondisi Kawasan Hutan

Abstract: Telah dilakukan penelitian keanekaragaman flora anggrek epifit dan terestrial dari dua lokasi sebagai indikator terhadap kondisis kawasan hutan di sekitar Tau Lumbis Kalimantan-Timur (Manukon dan Kabungolor). Penelitian ini dilakukan bulan April 2009 dengan menggunakan metode plot kuadrat ukuran 10 x 500 m (0,5 ha). Hasil studi ini telah berhasil diidentifikasi 18 jenis dari 15 marga dengan total kerapatan sebanyak 289 rumpun/0,5 ha. Anggrek epifit sebanyak 14 jenis dan terestrial 4 jenis. Indeks keanekaragaman jenis memperlihatkan sedang (H’=1.41). Agrostophyllum bicuspidatum adalah nilai penting tertinggi di Manukon (NP=50.70 %) dan Corymborchis veratrifolia nilai penting tertinggi di Kabungolor (NP=26.32 %). Berdasarkan analisis cluster menggunakan software Biodiversity- Pro yang berdasarkan pada kerapatan dari dua lokasi dapat dibagi menjadi lima kelompok besar, dan secara umum kondisi hutan di Kabungalor lebih baik dari Manukon. Kata kunci: Jenis-jenis anggrek, Hutan, Tau Lumbis, Kalimantan Timur

Struktur dan komposisi jenis tumbuhan herba dan semai pada habitat satwa herbivor disuaka marga s atwa cikepuh,sukabumi, jawabarat

Abstract: The research was conducted to study the structure and composition of herbaceous and seedling communities (understorey species)occurred on herbivore habitat within Cikepuh wildlife sanctuary. A series of 25 plots of 1 m x 1 m each with an interval of 5 m were used to establish a species-area relationship. The proportion (percentage) of canopy (leaf) coverage of each species occurred within the sampling plots to the sampled soil surface area was measured. A total of 54 species belonging to 47 genera and 29 families occurred in the 25 plots develoved, with the species diversity index (value) of 2.09 using the Shannon Wiener formula. Nine species were categorized as herbaceous plants (16.67 %) while the other 45 species were categorized as seedlings (83.33 %). The average density measured was 39 individuals/m or c. 386.400 individuals/ha. The most dominant family is Euphorbiaceae (possessing 5 diffrent species) while the most dominant species is Urochloa subquadripara (Poaceae) with and importance value of 96.08%.

What Drives Academic Data Sharing

Abstract: Despite widespread support from policy makers, funding agencies, and scientific journals, academic researchers rarely make their research data available to others. At the same time, data sharing in research is attributed a vast potential for scientific progress. It allows the reproducibility of study results and the reuse of old data for new research questions. Based on a systematic review of 98 scholarly papers and an empirical survey among 603 secondary data users, we develop a conceptual framework that explains the process of data sharing from the primary researcher’s point of view. We show that this process can be divided into six descriptive categories: Data donor, research organization, research community, norms, data infrastructure, and data recipients. Drawing from our findings, we discuss theoretical implications regarding knowledge creation and dissemination as well as research policy measures to foster academic collaboration. We conclude that research data cannot be regarded a knowledge commons, but research policies that better incentivize data sharing are needed to improve the quality of research results and foster scientific progress.

The Tropical managed Forests Observatory: a research network addressing the future of tropical logged forests

Abstract: While attention to logging in the tropics has been increasing, studies on the long-term effects of silviculture on forest dynamics and ecology remain scare and spatially limited Indeed, most of our knowledge on tropical forests arise from studies carried out in undisturbed tropical forests This bias is problematic given that logged and disturbed tropical forests are covering now a larger area than the so-called primary forests The Tropical managed Forests Observatory (TmFO), a new network of permanent sample plots in logged forests, aims to fill this gap by providing unprecedented opportunities to examine long-term data on the resilience of logged tropical forests at regional and global scales TmFO currently includes 24 experimental sites distributed across three tropical regions, with a total of 536 pem1anent plots and about 1200 ha of forest inventories In this paper we will present the main results generated by the network on the impact of logging on Carbon and timber recovery, as well as biodiversity changes in the Amazon basin and South East Asia

CHECKLIST ON FAUNA DIVERSITY GUNUNG HALIMUN SALAK NATIONAL PARK: Cikaniki-Citalahab

Abstract: The Cikaniki resort is one of the most accessible research stations located in the Gunung Halimun Salak National Park (GHSNP). It is in adjacent with Citalahab village. The Research Center for Biology, Indonesian Institute of Sciences and other institutions have conducted intensive research on the fauna diversity of GHSNP from this station. Here we formulate a checklist on fauna diversity surrounding the Cikaniki Research Station and Citalahab, GHNSP from various sources, i.e. field work, museum collections (Museum Zoologicum Bogoriense), scientific publications, and technical report. The study was conducted from October 2019 until October 2020. The latest field work was conducted from 8-10 October 2019 under the framework of the Jungle Survival and Biological Collection Management 2019 program. In total, 821 fauna species were recorded in Cikaniki-Citalahab areas which comprises of 48 species of Mollusca, five species of Malacostraca, 523 species of Insects, 22 species of Actinopterygii, 63 species of Amphibia and Reptiles, 115 species of Aves and 45 species of Mammals. The diversity contributes 62.1% of the total 1,323 known fauna species in GHSNP. Five number of species were assigned as endangered and three species critical endangered by IUCN. In addition, 123 species were endemic to Java and 34 species protected by Regulation of the Ministry of Environment and Forestry Republic of Indonesia Number P.106/MENLHK/SETJEN/KUM.1/12/2018. The areas of Cikaniki and Citalahab are rich in biodiversity. Although both areas are in close intact with human activity, research and ecotourism, the need of continuously spreading awareness and enforce species and area conservation is inevitable.

Taking the pulse of Earth's tropical forests using networks of highly distributed plots

Abstract: Tropical forests are the most diverse and productive ecosystems on Earth. While better understanding of these forests is critical for our collective future, until quite recently efforts to measure and monitor them have been largely disconnected. Networking is essential to discover the answers to questions that transcend borders and the horizons of funding agencies. Here we show how a global community is responding to the challenges of tropical ecosystem research with diverse teams measuring forests tree-by-tree in thousands of long-term plots. We review the major scientific discoveries of this work and show how this process is changing tropical forest science. Our core approach involves linking long-term grassroots initiatives with standardized protocols and data management to generate robust scaled-up results. By connecting tropical researchers and elevating their status, our Social Research Network model recognises the key role of the data originator in scientific discovery. Conceived in 1999 with RAINFOR (South America), our permanent plot networks have been adapted to Africa (AfriTRON) and Southeast Asia (T-FORCES) and widely emulated worldwide. Now these multiple initiatives are integrated via ForestPlots.net cyber-infrastructure, linking colleagues from 54 countries across 24 plot networks. Collectively these are transforming understanding of tropical forests and their biospheric role. Together we have discovered how, where and why forest carbon and biodiversity are responding to climate change, and how they feedback on it. This long-term pan-tropical collaboration has revealed a large long-term carbon sink and its trends, as well as making clear which drivers are most important, which forest processes are affected, where they are changing, what the lags are, and the likely future responses of tropical forests as the climate continues to change. By leveraging a remarkably old technology, plot networks are sparking a very modern revolution in tropical forest science. In the future, humanity can benefit greatly by nurturing the grassroots communities now collectively capable of generating unique, long-term understanding of Earth's most precious forests.

Keragaman jenis tumbuhan bawah pada berbagai tegakan hutan tanaman di benakat, sumatera selatan

Abstract: Penelitian keragaman jenis tumbuhan bawah pada beberapa tegakan hutan tanaman dilakukan di Benakat, Sumatera Selatan. Penelitian ini bertujuan untuk mengetahui komposisi dan keragaman jenis tumbuhan bawah pada 4 (empat) jenis tegakan hutan tanaman, yaitu mahoni (Swietenia machropylla), pinus (Pinus merkusii), sungkai. Pengambilan sebanyak 20 petak contoh per jenis tegakan, dengan 2m x 2m. Keragaman jenis tumbuhan bawah tertinggi pada tegakan mahoni, sedangkan terendah pada tegakan seru. Perbedaan jenis tanaman pokok mempengaruhi struktur, dominasi dan keragaman jenis tumbuhan bawah. Keragaman jenis tumbuhan bawah tidak menunjukkan adanya hubungan yang nyata dengan paramater kualitas tanah, namun demikian kelimpahan katoman (Peronema canescens), dan seru (Schima walichii). data menggunakan metode purposive sampling ukuran dan alang-alang berpotensi untuk dijadikan indikator terhadap kandungan C Organik dan N Total (Chromolaena odorata) (Imperata cylindrica).