@article {1954,
	title = {A climatic driver for abrupt mid-Holocene vegetation dynamics and the hemlock decline in New England},
	journal = {Ecology},
	volume = {87},
	year = {2006},
	note = {Foster, David ROswald, W Wyatt
Faison, Edward K
Doughty, Elaine D
Hansen, Barbara C S
eng
Research Support, Non-U.S. Gov{\textquoteright}t
Research Support, U.S. Gov{\textquoteright}t, Non-P.H.S.
2007/01/26 09:00
Ecology. 2006 Dec;87(12):2959-66.
},
	month = {Dec},
	pages = {2959-66},
	abstract = {The mid-Holocene decline of eastern hemlock is widely viewed as the sole prehistorical example of an insect- or pathogen-mediated collapse of a North American tree species and has been extensively studied for insights into pest-host dynamics and the consequences to terrestrial and aquatic ecosystems of dominant-species removal. We report paleoecological evidence implicating climate as a major driver of this episode. Data drawn from sites across a gradient in hemlock abundance from dominant to absent demonstrate: a synchronous, dramatic decline in a contrasting taxon (oak); changes in lake sediments and aquatic taxa indicating low water levels; and one or more intervals of intense drought at regional to continental scales. These results, which accord well with emerging climate reconstructions, challenge the interpretation of a biotically driven hemlock decline and highlight the potential for climate change to generate major, abrupt dynamics in forest ecosystems.},
	keywords = {*Climate, *Ecosystem, Geologic Sediments, new england, Tsuga/*physiology},
	isbn = {0012-9658 (Print)0012-9658 (Linking)},
	doi = {10.1890/0012-9658(2006)87[2959:ACDFAM]2.0.CO;2},
	author = {Foster, D. R. and Oswald, W. W. and Faison, E. K. and Doughty, E. D. and Hansen, B. C.}
}
@article {2190,
	title = {Detecting holocene changes in thermohaline circulation},
	journal = {Proc Natl Acad Sci U S A},
	volume = {97},
	year = {2000},
	note = {Keigwin, L DBoyle, E A
eng
Research Support, U.S. Gov{\textquoteright}t, Non-P.H.S.
2000/03/04 09:00
Proc Natl Acad Sci U S A. 2000 Feb 15;97(4):1343-6.
},
	month = {Feb 15},
	pages = {1343-6},
	abstract = {Throughout the last glacial cycle, reorganizations of deep ocean water masses were coincident with rapid millennial-scale changes in climate. Climate changes have been less severe during the present interglacial, but evidence for concurrent deep ocean circulation change is ambiguous.},
	keywords = {*Climate, *Plankton, Animals, Atlantic Ocean, carbon isotopes, ice, oxygen isotopes, time},
	isbn = {0027-8424 (Print)0027-8424 (Linking)},
	doi = {10.1073/pnas.97.4.1343},
	url = {https://www.ncbi.nlm.nih.gov/pubmed/10677463},
	author = {Keigwin, L. D. and Boyle, E. A.}
}
