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Simes Hemlock Removal - litter samples since 2005

• HF-ID: HFS2005-02
• Category: Research Samples
• Creator:
  • Barker Plotkin, A.

• Date: June 2006 thru Dec 2019
• Location: Simes Tract (Harvard Forest)
• Media: Samples - litter
• Contents:
  • Litter stored in plastic cups; Box 1: Dec 2005, Mar 2006, Jun 2006, Sep 2006;
  • Box 2: Dec 2006, Apr 2007, Jun 2007, Sep 2007;
  • Box 3: Sep 2007 (part), Dec 2007, Apr 2008, Jun 2008;
  • Box 4: Sep 2008, Dec 2008, Apr 2009, Jun 2009;
  • Box 5: Apr 2013, Jun 2013, Sep 2013, Dec 2013;
  • Box 6: Apr 2014, Jun 2014, Sep 2014, Dec 2014, Apr 2015;
  • Box 7: Jun 2015, Sep 2015, Dec 2015, Apr 2016;
  • Box 8: Apr 2016, Sep 2016, Dec 2016, Apr 2017, Jun 2017;
  • Box 9: Sep 2018, Dec 2018, Apr 2019, Jun 2019, Dec 2019;
  • Box 10: Sep 2018, Dec 2018, Jun 2019, Dec 2019. 9 boxes.

• Keywords: forest dynamics, hemlock woolly adelgid, hemlock, leaf litter, seeds, timber harvest
• Abstract:
  • Hemlock decline in New England is caused by direct and indirect effects of invasion of the hemlock woolly adelgid. Direct damage from the insect is causing gradual mortality of hemlock, and widespread harvesting of hemlock in advance of mortality, in contrast, causes immediate mortality and removal of biomass from the site. Although both processes affect thousands of acres of forest annually we have only a limited understanding of their effects on forest ecosystem function and productivity and the nature of the subsequent forest community. We anticipate that harvesting will yield different consequences than gradual mortality from the insect. Therefore we designed an experiment to simulate these contrasting impacts, by logging or girdling hemlock stands. Results from the experimental treatments will be compared to the changes observed in forests that are being infested by the adelgid, and can also be included in integrated analyses of a suite of large experiments that form a core component of the Harvard Forest LTER program.

• Related Items:
  • HF Data Archive: HF161 Litterfall in Hemlock Removal Experiment at Harvard Forest since 2005

• Archives Location: Sample Archive, Bay 1, stack 1, shelf 8
• Access: Active
• Administrative Notes:
  • August 2013 - converted to plastic 32 and 16 oz cups, disposed excess litter, condensed many boxes. Database records condensed to this one, 2006-06 removed
  • 2012 (Dec, Sept, June, April part) - Bay 1 2012 (April part) 2011 (Dec, Sept, June) - Bay 1

• Disposal Notes: Never Dispose.