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Threats and Strategies for Global Biodiversity Conservation

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eptiles. However, fire from these grassl<strong>and</strong>s can burn out ofcontrol <strong>and</strong> spread to adjoining <strong>for</strong>ests. When this occursannually, it creates a negative feedback loop that exp<strong>and</strong>s thegrassl<strong>and</strong> area at the expense of <strong>for</strong>ests.<strong>Global</strong> <strong>and</strong> regional climate patterns influence the impact of fire on bothpeople <strong>and</strong> ecosystems in Southeast Asia. In 1997-98, an El Niño year,many human-caused fires burned out of control, creating dangeroushaze, closing airports <strong>and</strong> seriously affecting the respiratory health ofmore than 20 million people. © Kamarulzaman Russali/Reuters/Corbislarge areas to oil palm plantation. Further, within thecontext of l<strong>and</strong> development, the existence of local people isunrecognized in the legal system, <strong>and</strong> they have been neglected(Murdiyarso <strong>and</strong> Adiningsih 2006). This can lead to l<strong>and</strong>tenure conflicts, <strong>and</strong> often stakeholders use fires as a weaponto claim l<strong>and</strong>s (Tomich et al. 1998). There<strong>for</strong>e, social conflicthas become an indirect cause of fires.Of particular note is how the expansion of crop plantations<strong>and</strong> ecologically-inappropriate fire use has impacted peatswamps in the region. Peatl<strong>and</strong>s are usually continuously wet<strong>and</strong> contain high amount of moisture even during the normaldry season. Community fires are generally small <strong>and</strong> not aproblem. In non-El Niño years, access to the remote peatl<strong>and</strong>sis difficult. However, when peatl<strong>and</strong>s are drained <strong>for</strong>l<strong>and</strong> development or agriculture, access into remote peatl<strong>and</strong>sis facilitated by canals (Chokkalingam <strong>and</strong> Suyanto 2004).In this context, combinations of intensified communityactivities <strong>and</strong> dry conditions lead to more widespreadfires. Proper management <strong>and</strong> use of water can be usedto reduce the risk of the widespread fires.Climate change has been shown to alter fire regimes substantiallyin the Indo-Malay realm. Shifts in regional climaticpatterns due to climate change have caused intense El Niñoevents, which have resulted in severe drought. Extensive <strong>and</strong>severe fires in Indonesia have been associated with extremedry weather during these El Niño years, which serves toaccelerate fire spread (Murdiyarso <strong>and</strong> Adiningsih 2006).The Intergovernmental Panel on Climate Change (IPCC2001) recognized that extreme events in the Asian regionhave increased in intensity <strong>and</strong> frequency. This is supportedby Irawan (2000), who reported that, during the 1876-2000period, the frequency of El Niño tended to increase from oncein every eight years during the 1876-1976 period to once inevery four years during 1977-2000. These climate-firerelationships caused the recurrence of highly damaging fires in1982-83, 1991, 1994, 1997-98, 2002 <strong>and</strong> 2005-2006. Duringthese events, large areas of <strong>for</strong>est in the region were burned,causing habitat loss, fragmentation <strong>and</strong> declining biodiversity.Wildfires in tropical broadleaved <strong>for</strong>ests are also a threat tocoastal marine ecosystems in the region. Research has shownthat iron fertilization by the 1997 Indonesian wildfires wassufficient to produce an extraordinary red tide, which led toreef death by asphyxiation (Abram et al. 2003). The vastamounts of smoke produced by these fires also reducedvisibility, <strong>and</strong> regional haze substantially impacted economicactivity in the region. In conclusion, agricultural burning,peat fires <strong>and</strong> altered fire regimes as a result of unsustainablelogging are the major causes of recurrent haze engulfing theregion seasonally, whereas prolonged droughts intensifywidespread of fires.Logging is also a primary cause of altered fire regimes inthe Indo-Malay realm. When per<strong>for</strong>med according tosustainable <strong>for</strong>est management principles, logging willresult only in temporary disturbance to the <strong>for</strong>est ecosystem.However, illegal logging may cause previously closedcanopy <strong>for</strong>ests to be opened to direct solar radiation,drying logging debris <strong>and</strong> fueling runaway fires.In the grassl<strong>and</strong>s of the Indo-Malay realm, pastoralistspractice annual burning of their grazing l<strong>and</strong>s, usually prior tothe beginning of the growing season, to ensure new, succulentshoots are <strong>for</strong>med that are suitable <strong>for</strong> livestock grazing. Fireis also used to facilitate hunting by burning tall grass, whichacts as a camouflage <strong>for</strong> animals. Burning facilitates tracking<strong>and</strong> finding stump holes that conceal small mammals <strong>and</strong>Members of a local community conduct a prescribed burn in Chiapas,Mexico. This work is part of the community’s Integrated FireManagement Plan, which spells out where <strong>and</strong> when fires will beallowed. © Víctor Negrete Paz/CONANP14

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