http://sbc.lternet.edu/external/InformationManagement/PASTA/20140512_EML/knb-lter-sbc.2002.22.xml
http://sbc.lternet.edu/external/InformationManagement/PASTA/20140512_EML/knb-lter-sbc.2004.17.xml
http://sbc.lternet.edu/external/InformationManagement/PASTA/20140512_EML/knb-lter-sbc.2005.15.xml
http://sbc.lternet.edu/external/InformationManagement/PASTA/20140512_EML/knb-lter-sbc.2007.6.xml