@inbook {1307,
	title = {Polar Systems},
	booktitle = {Millennium Ecosystem Assessment. Current State and Trends: Findings of the Condition and Trends Working Group},
	year = {2005},
	pages = {717-743},
	publisher = {Island Press},
	organization = {Island Press},
	keywords = {LTER-MCM},
	doi = {LTER},
	author = {F. S. Chapin and McGuire, A and Nuttall, M and Ross A. Virginia and Young, O and Zimov, S and Christensen, T and Godduhn, A and Murphy, E and Diana H. Wall and Zockler, C and Berman, M and Callaghan, T and Peter Convey and A. S. Crepin and Danell, K and Hugh W. Ducklow and Forbes, B and Kofinas, G},
	editor = {R. Hassan and R. Scholes and N. Ash}
}
