Monteverde Cloud Forest, Costa Rica, Tree Cellulose d18O Data Anchukaitis, K.J.; Evans, M.N. Anchukaitis, K.J. Evans, M.N. Tropics hydrology earth science/paleoclimate/tree-ring (Monteverde Cloud Forest>LATITUDE 10.2>LONGITUDE -85.35) Widespread amphibian extinctions in the mountains of the American tropics have been blamed on the interaction of anthropogenic climate change and a lethal pathogen. However, limited meteorological records make it difficult to conclude whether current climate conditions at these sites are actually exceptional in the context of natural variability. We use stable oxygen isotope measurements from trees without annual rings to reconstruct a century of hydroclimatology in the Monteverde Cloud Forest of Costa Rica. High-resolution measurements reveal coherent isotope cycles that provide annual chronological control and paleoclimate information. Climate variability is dominated by interannual variance in dry season moisture associated with El Niño Southern Oscillation events. There is no evidence of a trend associated with global warming. Rather, the extinction of the Monteverde golden toad (Bufo periglenes) appears to have coincided with an exceptionally dry interval caused by the 1986-1987 El Niño event. STUDY NOTES: Stable oxygen isotopes (d18O) measured at constant depth in two montane cloud forest trees (Pouteria, specimens MV12 and MV15), plus the d18O data on monthly age scale for the 2 trees and for a composite of both samples. IITRDB009 NCDC-Paleoclimatology https://www.ncdc.noaa.gov/data-access/paleoclimatology-data - Bauer Bruce Investigator : Anchukaitis, K.J. Investigator : Evans, M.N. 2014-03-06 ONLINE Files online, ASCII https://www.ncdc.noaa.gov/paleo/study/16139 https://www1.ncdc.noaa.gov/pub/data/paleo/treering/isotope/northamerica/costarica/anchukaitis2010/monteverde2010mv12monthly.txt https://www1.ncdc.noaa.gov/pub/data/paleo/treering/isotope/northamerica/costarica/anchukaitis2010/monteverde2010mv12.txt https://www1.ncdc.noaa.gov/pub/data/paleo/treering/isotope/northamerica/costarica/anchukaitis2010/monteverde2010composite.txt https://www1.ncdc.noaa.gov/pub/data/paleo/treering/isotope/northamerica/costarica/anchukaitis2010/monteverde2010mv15.txt https://www1.ncdc.noaa.gov/pub/data/paleo/treering/isotope/northamerica/costarica/anchukaitis2010/monteverde2010mv15monthly.txt https://www1.ncdc.noaa.gov/pub/data/paleo/treering/isotope/northamerica/costarica/anchukaitis2010/monteverde2010mv12monthly.txt https://www1.ncdc.noaa.gov/pub/data/paleo/treering/isotope/northamerica/costarica/anchukaitis2010/monteverde2010mv12.txt https://www1.ncdc.noaa.gov/pub/data/paleo/treering/isotope/northamerica/costarica/anchukaitis2010/monteverde2010composite.txt https://www1.ncdc.noaa.gov/pub/data/paleo/treering/isotope/northamerica/costarica/anchukaitis2010/monteverde2010mv15.txt https://www1.ncdc.noaa.gov/pub/data/paleo/treering/isotope/northamerica/costarica/anchukaitis2010/monteverde2010mv15monthly.txt English https://www.ncdc.noaa.gov/paleo/study/16139 https://www1.ncdc.noaa.gov/pub/data/paleo/treering/isotope/northamerica/costarica/anchukaitis2010/monteverde2010mv12monthly.txt https://www1.ncdc.noaa.gov/pub/data/paleo/treering/isotope/northamerica/costarica/anchukaitis2010/monteverde2010mv12.txt https://www1.ncdc.noaa.gov/pub/data/paleo/treering/isotope/northamerica/costarica/anchukaitis2010/monteverde2010composite.txt https://www1.ncdc.noaa.gov/pub/data/paleo/treering/isotope/northamerica/costarica/anchukaitis2010/monteverde2010mv15.txt https://www1.ncdc.noaa.gov/pub/data/paleo/treering/isotope/northamerica/costarica/anchukaitis2010/monteverde2010mv15monthly.txt Kevin J. Anchukaitis and Michael N. Evans 2010Tropical cloud forest climate variability and the demise of the Monteverde golden toadProceedings of the National Academy of Sciences107115036-504010.1073/pnas.0908572107http://www.pnas.org/content/107/11/5036.abstract START YEAR: 1900 AD * END YEAR: 2002 AD -85.35 10.2 -85.35 10.2