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Since the late 1960s the Indonesian state of East Kalimantan has witnessed a marked increase in the impact of human activities chiefly commercial logging and agricultural exploitation. Located on the island of Borneo, East Kalimantan also was subjected to prolonged droughts and extensive wildfires in 1982-83 and 1997-98 that were linked to the El Nino-Southern Oscillation (ENSO) phenomenon. The changes in the rainforest ecosystem in East Kalimantan during this 15-year cycle of severe ENSO events are the subject of this book. With an eye toward development of rehabilitation techniques for sustainable forest management, the authors examine possible interactive effects of drought, fire, and human impacts on the flora and fauna of the area.
The Dipterocarp forests of South-East Asia constitute a dominant component of the world's tropical forests. As such, they are intertwined with a Pandora's box of problems that have plagued the world for decades; Over- and underdevelopment, poverty, hunger, population growth, exploitation of natural resources, environmental degradation, loss of biodiversity, the debt crisis and, of late, climate change. The world community has responded to the crucial role of these forests and the dangers facing them with funds, and a myriad of programmers, projects, institutions, conferences and networks. Apparently neither a lack of knowledge nor finance constrains the dissipation of sustainable management practices: the fate of the world's Dipterocarp forests will certainly depend on the involvement of scientists from many nations and disciplines, but will perhaps ultimately, rest with local policymakers, forest administrators and line foresters. Unfortunately, these two groups rarely share realms, readings or reasoning: practical foresters, invariably very involved with the challenges of day-to-day forest management in remote, isolated environments, may long remain oblivious to scientific developments. Traditionally though they do find solutions to problems, gain deep insights into forest responses and practical constraints, and sometimes even report in semi-obscure publications, which rarely reach the scientific circuit.The editors of the book, both experienced forest and soil scientists and practical forest managers, have attempted to bridge the gap between the realms of forest science and practice in Dipterocarp ecology, management and utilization.
. An assessment is made of dipterocarp mycorrhizal specificity and a discussion is presented on how mycorrhizal specificity may have contributed to speciation in Dipterocarpaceae. Other aspects touched upon include work on a non- ectomycorrhizal association of a fungus with dipterocarp roots, proposed to be called amphymycorrhizae. Also discussed are the effects of physical influences upon dipterocarp ectomycorrhizae, demonstrating the negative impact of high topsoil temperatures and lack of oxygen upon functioning and survival of dipterocarp ectomycorrhizae. Furthermore how dipterocarp ectomycorrhizae influence regeneration of Dipterocarpaceae through enhanced survival near the mother trees. At the end of the book practical recommendations are given for optimalization of management of mixed dipterocarp forests based upon the conclusions reached in the research, including the use of correct fungus-dipterocarp combinations for different sites.