Increased plant biomass in a High Arctic heath community from 1981 to 2008

Ecology
J M G Hudson, Greg H R Henry

Abstract

The Canadian High Arctic has been warming for several decades. Over this period, tundra plant communities have been influenced by regional climate change, as well as other disturbances. At a site on Ellesmere Island, Nunavut, Canada, we measured biomass and composition changes in a heath community over 13 years using a point-intercept method in permanent plots (1995-2007) and over 27 years using a biomass harvest comparison (1981-2008). Results from both methods indicate that the community became more productive over time, suggesting that this ecosystem is currently in transition. Bryophyte and evergreen shrub abundances increased, while deciduous shrub, forb, graminoid, and lichen cover did not change. Species diversity also remained unchanged. Because of the greater evergreen shrub cover, canopy height increased. From 1995 to 2007, mean annual temperature and growing season length increased at the site. Maximum thaw depth increased, while soil water content did not change. We attribute the increased productivity of this community to regional warming over the past 30-50 years. This study provides the first plot-based evidence for the recent pan-Arctic increase in tundra productivity detected by satellite-based remote-sensing a...Continue Reading

References

Jan 24, 2006·Proceedings of the National Academy of Sciences of the United States of America·Marilyn D WalkerPhilip A Wookey
Jul 9, 2008·Proceedings of the National Academy of Sciences of the United States of America·J Philip GrimeChris R Bennett

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Citations

Jan 26, 2011·Proceedings of the National Academy of Sciences of the United States of America·Linda J BeaumontWilfried Thuiller
Jul 10, 2013·Philosophical Transactions of the Royal Society of London. Series B, Biological Sciences·Gilles GauthierDominique Berteaux
Sep 24, 2011·Ecological Applications : a Publication of the Ecological Society of America·Wade E Winterhalter
Aug 19, 2015·Global Change Biology·Craig A EmmertonGilberto Z Pastorello
May 14, 2011·Ecological Applications : a Publication of the Ecological Society of America·Adrian V Rocha, Gaius R Shaver
May 9, 2014·Ecology·Susan M NataliKathryn G Crummer
Apr 24, 2014·Global Change Biology·Frank HagedornPavel A Moiseev
Oct 7, 2015·Frontiers in Plant Science·Stephen B PointingWarwick F Vincent
Aug 29, 2012·The New Phytologist·M R TuretskyE-S Tuittila
Jul 4, 2015·Ecology and Evolution·Robert D HollisterJessica L Gregory
Dec 31, 2014·Proceedings of the National Academy of Sciences of the United States of America·Sarah C ElmendorfMarilyn Walker
Jan 8, 2017·Global Change Biology·James S CamacPeter A Vesk
Nov 30, 2016·Ecological Applications : a Publication of the Ecological Society of America·Yueyang JiangBonnie L Kwiatkowski
Jan 9, 2018·Biodiversity Data Journal·Anders Bryn, Kerstin Potthoff
Dec 17, 2015·American Journal of Botany·Robert T S BarrettCraig E Tweedie
Jan 21, 2020·Global Change Biology·Andrea GhirardoRiikka Rinnan
Apr 19, 2018·Proceedings of the National Academy of Sciences of the United States of America·Huiying LiuJin-Sheng He
Sep 28, 2018·Nature·Anne D BjorkmanEvan Weiher
Nov 18, 2020·Nature Communications·Nicholas J BouskillRobert F Grant
Feb 13, 2021·Plants·Susanna E VennAdrienne B Nicotra

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