@article {2561,
	title = {ENSO Drove 2500-Year Collapse of Eastern Pacific Coral Reefs},
	journal = {Science},
	volume = {337318333105323329353215234133898029327161272715118 119109123420422375802767219435149464823345354035608535771415},
	year = {2012},
	month = {Jun-07-2012},
	pages = {81 - 84},
	abstract = {Cores of coral reef frameworks along an upwelling gradient in Panam{\'a} show that reef ecosystems in the tropical eastern Pacific collapsed for 2500 years, representing as much as 40\% of their history, beginning about 4000 years ago. The principal cause of this millennial-scale hiatus in reef growth was increased variability of the El Ni{\~n}o{\textendash}Southern Oscillation (ENSO) and its coupling with the Intertropical Convergence Zone. The hiatus was a Pacific-wide phenomenon with an underlying climatology similar to probable scenarios for the next century. Global climate change is probably driving eastern Pacific reefs toward another regional collapse.},
	issn = {0036-8075},
	doi = {10.1126/science.1221168},
	url = {http://www.sciencemag.org/cgi/doi/10.1126/science.1221168},
	author = {Toth, L. T. and Aronson, R. B. and Vollmer, S. V. and Hobbs, J. W. and Urrego, D. H. and Cheng, H. and Enochs, I. C. and Combosch, D. J. and van Woesik, R. and Macintyre, I. G.}
}
@article {421,
	title = {Quaternary glaciation and hydrologic variation in the South American tropics as reconstructed from the Lake Titicaca drilling project},
	journal = {Quaternary Research},
	volume = {68},
	year = {2007},
	note = {id: 841; 227AJ Times Cited:9 Cited References Count:63Y},
	pages = {410-420},
	abstract = {A 136-m-long drill core of sediments was recovered from tropical high-attitude Lake Titicaca, Bolivia-Peru, enabling a reconstruction of past climate that spans four cycles of regional glacial advance and retreat and that is estimated to extend continuously over the last 370,000 yr. Within the errors of the age model, the periods of regional glacial advance and retreat are concordant respectively with global glacial and interglacial stages. Periods of ice advance in the southern tropical Andes generally were periods of positive water balance, as evidenced by deeper and fresher conditions in Lake Titicaca. Conversely, reduced glaciation occurred during periods of negative water balance and shallow closed-basin conditions in the lake. The apparent coincidence of positive water balance of Lake Titicaca and glacial growth in the adjacent Andes with Northern Hemisphere ice sheet expansion implies that regional water balance and glacial mass balance are strongly influenced by global-scale temperature changes, as well as by precessional forcing of the South American summer monsoon. (c) 2007 University of Washington. All rights reserved.},
	issn = {0033-5894},
	doi = {10.1016/J.Yqres.2007.07.008},
	author = {Fritz, S. C. and Baker, P. A. and Seltzer, G. O. and Ballantyne, A. and Tapia, P. and Cheng, H. and Edwards, R. L.}
}
