Unfolding the climate change impact on medicinal and aromatic plants - Climate Change Effect on Crop Productivity - page 212

species from biodiversity hotspots. Conservation Biology ,
20(2):538-548.
Neilson R P, Pitelka L F and Solomon A M. 2005.
Forecasting regional to global plant migration in response to
climate change. Bio Science , 55(9):749-759.
Nickens T E. 2007. Walden warming. National Wildlife,
14:36-41.
Pal J S, Giorgi F and Bi X. 2004. Consistency of recent European
summer precipitation trends and extremes with future regional
climate projections. Geophysical Research Letters , 31:L13202.
Parmesan C and Yohe G. 2003. A globally coherent fingerprint
of climate change impacts across natural systems. Nature ,
421:37-42.
Pompe S, Hanspach J, Badeck F, Klotz S, Thuiller
W and Kuhn I. 2008. Climate and land use change impacts on
plant distributions in Germany. Biology Letters , 4:564-567.
Schar C, Vidale P L and Luthi D. 2004. The role of increas-
ing temperature variability in European summer heatwaves.
Nature, 427:332-336.
Shea J. 2008. Apple growers hopeful after freeze. Times-News ,
April 6.
Thomas C D, Cameron A and Green R E. 2004. Extinction
risk from climate change. Nature, 427:145-148.
Walther G R, Post E, and Convey P. 2002. Ecological
responses to recent climate change. Nature , 416:389-395.
Yoon C K. 1994. Warming moves plants up peaks, threatening
extinction. New York Times , June 21, C4.
Zobayed S M A, Afreen F and Kozai T. 2005. Temperature
stress can alter the photosynthetic efficiency and secondary
metabolite concentrations in St. John's wort. Plant Physiology
and Biochemistry , 43:977-984.