Indonesian Institute of Sciences

About: Indonesian Institute of Sciences is a facility organization based out in Jakarta, Indonesia. It is known for research contribution in the topics: Population & Biology. The organization has 4795 authors who have published 10544 publications receiving 76990 citations. The organization is also known as: Indonesian Institute of Sciences Cibinong, Indonesia.

A unified GPS-based earthquake catalog for the Sumatran plate boundary between 2002 and 2013

Abstract: We have compiled the first self-consistent GPS-based earthquake catalog for the Sumatran plate boundary. Using continuous daily position time series from the Sumatran GPS Array (SuGAr), we document 30 earthquakes which occurred within or outside the SuGAr network from August 2002 through the end of 2013, and we provide estimates of both vertical and horizontal coseismic offsets associated with 1 M9.2, 3 M8, 6 M7, 19 M6, and 1 M5.9 earthquakes, as well as postseismic decay amplitudes and times associated with 9 M > 7 earthquakes and 1 M6.7 earthquake. For most of the previously studied earthquakes, our geodetic catalog provides more complete coseismic displacements than those published, showing consistent patterns of motion across a large range of distances. For many of the moderate to large earthquakes, we publish their coseismic displacements for the first time, providing new constraints on their locations and slip distributions. For the postseismic time series, we have tackled the challenge of separating the signals for individual events from the overlapping effects of many other earthquakes. As a result, we have obtained either new or much longer time series than previously published. Based on our long time series, we find logarithmic decay times ranging from several days to more than 20 years, and sometimes a second decay time is needed, suggesting that when studying large to great Sumatran earthquakes, we need to consider multiple postseismic mechanisms. Our geodetic catalog provides rich spatial and temporal Sumatran earthquake cycle information for future studies of the physics and dynamics of the Sumatran plate boundary.

Evaluation of the inhibitory activities of the extracts of Indonesian traditional medicinal plants against Plasmodium falciparum and Babesia gibsoni.

Abstract: Twenty-four kinds of water extracts derived from 22 plants that are traditionally used for the treatment of malaria on Java Island, Indonesia, were screened for their antibabesial and antimalarial activities. Among the extracts, 8 extracts displayed strong antimalarial activity, with an inhibition range from 89.6 to 100%, and 15 showed strong antibabesial activity, with an inhibition range from 84.2 to 98.1%. The extracts of Achillea millefolium, Baeckea frutenscens, Brucea javanica, Curcuma xanthorrhiza, Strychnos lucida and Swietenia macrophylla showed both strong antibabesial and antimalarial activities. The antimalarial activities paralleled the antibabesial activities, but the converse was not true.

Heterogeneous impacts of community forestry on forest conservation and poverty alleviation: evidence from Indonesia

Abstract: Community forestry is a participatory approach aiming to achieve sustainable forest management while also reducing poverty among rural communities. Yet, evidence of the impacts of community forestry programmes on both forest conservation and poverty alleviation is scarce, and there is limited understanding of impacts across different social and biophysical contexts. We applied a matching method to assess the extent to which deforestation has decreased and village well-being has improved as a result of Indonesia's community forestry scheme, Hutan Desa (Village Forest). We assessed five dimensions of well-being: basic (living conditions), physical (access to health and education), financial (income support), social (security and equity) and environmental (natural hazard prevention). We found that Hutan Desa was associated with reduced deforestation and poverty. ‘Win-win’ outcomes were found in 51% of cases, comprising (a) positive outcomes for both forests and poverty, (b) a positive outcome for one aspect and a negligible outcome for the other, or (c) a positive outcome for poverty in areas where natural forest had already been lacking prior to Hutan Desa tenure. Benefits to forests and people systematically differed depending on land-use zones, reflecting subtle interactions between anthropogenic pressures and community livelihood characteristics. In Watershed Protection Zones, which are dominated by subsistence-based forest livelihoods, community forestry provided mild conservation benefits, but resulted in the greatest improvements in well-being through improved land tenure. In Limited Production Zones, community forestry provided modest benefits for both conservation and well-being because restrictions on timber harvest due to Hutan Desa designation reduced the financial well-being of logging communities. The greatest conservation benefits were experienced in Permanent or Convertible Production Zones, but well-being improvements were minimal. Here, living conditions and environmental well-being were reduced due to pressure to intensify agricultural production under increased land scarcity in these predominantly cash crop-oriented communities. Our results highlight the spatial and contextual variation in impacts of community forestry policies on poverty alleviation and forest conservation outcomes. Crucially, our study provides vital objective information for future policy development in Indonesia and other tropical countries implementing community forestry schemes. A plain language summary is available for this article.