TDE Sample Archives (Updated November 21, 2003)


Persons interested in developing proposals to utilize these samples are requested to contact Paul Hanson (hansonpj@ornl.gov) to obtain general information and possible redirection to other staff investigators.

Additional small samples from green canopy leaves,  leaf litter by species, bole sapwood and terminal branches are also available dried and ground.


  • Sample Set #TDE.1

  • 1993 SOILS - Pretreatment
    Sample Type: Pretreatment soil samples were collected at 15 cm intervals to 90 cm depth (when possible) on an 8 x 8 m grid across the TDE experimental area (310 locations).  Only the central 49 locations per treatment plot are archived (i.e., rows 3 through 9 including the 7 centered positions).

    Year Collected: 1993
    Next Scheduled Collection: February of 2005
    Analyses: Planned analysis for C, N, and other elements planned for 2005 after 10+ years of experimental manipulation.

    Sample condition:  Air dried samples.  All samples have been prepared (i.e., homogenized) for analyses.
    Related reference:  Johnson et al. 2002 J Enviorn Qual 31:204-216.


  • Sample Set #TDE.2

  • 1992 LITTER SAMPLES
    Sample Type: Pretreatment litter collections were obtained from 49 positions per treatment block (i.e., rows 3 through 9 including the 7 centered positions). At each position litter was collected in a plastic basket with a collection area of 0.2 m2.

    Year Collected: 1992
    Collections were made on Sept. 20, Oct. 1, Oct. 15, Oct. 28, Nov. 10, and Dec. 2.

    Analyses: Total mass of leaf and non-leaf litter by basket location and date. The 1992 samples were not sorted by species.

    Sample Condition:  Coarse ground. A leaf litter sample  for each position have been saved (147 potential samples -- one missing). These ground samples included pooled materials from each sampling date.  Some twig samples have also been saved.

    Reference:  Hanson PJ, Todd DE, Joslin JD (2003) Canopy production.  In: Hanson PJ, Wullschleger SD, Eds, North American Temperate Deciduous Forest Responses to Changing Precipitation Regimes. Springer, New York, Ecological Studies 166:303-315.


  • Sample Set #TDE.3

  • 1993 LITTER SAMPLES
    Sample Type: Litter collections were obtained from 49 positions per treatment block (i.e., rows 3 through 9 including the 7 centered positions). At each position litter was collected in a plastic basket with a collection area of 0.2 m2.

    Year Collected: 1993
    Collections were made on May 12, June 3, July 28, Sept 14, Oct 27, Nov. 9, and Dec. 1.

    Analyses: Total mass of leaf and non-leaf litter by basket location and date. The 1993 samples were not sorted by species.

    Sample Condition: Fine ground. A leaf litter sample for each position have been saved (147 potential samples -- one missing at location 5-9; low sample quantity for locations 4-16 and 9-4) . These ground samples included pooled materials from the fall collections (Sept 14-Dec 1). A selection of twig samples have also been saved.

    Reference:  Hanson PJ, Todd DE, Joslin JD (2003) Canopy production.  In: Hanson PJ, Wullschleger SD, Eds, North American Temperate Deciduous Forest Responses to Changing Precipitation Regimes. Springer, New York, Ecological Studies 166:303-315.


  • Sample Set #TDE.4

  • 1994 LITTER SAMPLES
    Sample Type: Litter collections were obtained from 49 positions per treatment block (i.e., rows 3 through 9 including the 7 centered positions). At each position litter was collected in a plastic basket with a collection area of 0.2 m2.

    Year Collected: 1994
    Collections were made on Apr 4, May 17, Aug 29, Sep 22, Oct 4, Oct 24, Nov 9, and Nov 30.

    Analyses: Total mass of leaf and non-leaf litter by basket location and date. The species composition of the 1994 samples has also been estimated for the following: chestnut oak, white oak, other oaks, maples, yellow-poplar, Sourwood/blackgum, pine, misc. unidentifiable leaves and flowers etc., and twigs/acorns.

    Sample Condition:  Coarse ground. One leaf litter sample for each core position has been saved (Key positions for rows 3, 6, and 9 for 27 total samples). These ground samples included pooled materials from the fall collections (Sep 22 - Nov 30).  Selected twig samples have also been saved.

    Reference:  Hanson PJ, Todd DE, Joslin JD (2003) Canopy production.  In: Hanson PJ, Wullschleger SD, Eds, North American Temperate Deciduous Forest Responses to Changing Precipitation Regimes. Springer, New York, Ecological Studies 166:303-315.


  • Sample Set #TDE.5

  • 1995 LITTER SAMPLES
    Sample Type: Litter collections were obtained from 49 positions per treatment block (i.e., rows 3 through 9 including the 7 centered positions). At each position litter was collected in a plastic basket with a collection area of 0.2 m2.

    Year Collected: 1995
    Collections were made on May 5. Aug 1, Sep 7, Oct 2, Oct 16, Nov 13 and Dec 15.

    Analyses: Total mass of leaf, non-leaf litter, and acorn mass by basket location and grouped dates (May 5-Aug 1; Sep 7, Oct 2-16, and Nov 13-Dec15. The species composition of the 1995 samples has also been estimated for the following: chestnut oak, white oak, other oaks, maples, yellow-poplar, Sourwood/blackgum, pine, misc. unidentifiable leaves and flowers etc., twigs and acorns.

    Sample Condition: Coarse ground. One leaf litter sample for each core position has been saved (Key positions for rows 3, 6, and 9 for 27 total samples). These ground samples included pooled materials from the fall collections (Sep 7 to  Dec 15).  Selected twig samples have also been saved.

    Reference:  Hanson PJ, Todd DE, Joslin JD (2003) Canopy production.  In: Hanson PJ, Wullschleger SD, Eds, North American Temperate Deciduous Forest Responses to Changing Precipitation Regimes. Springer, New York, Ecological Studies 166:303-315.


  • Sample Set #TDE.6

  • 1996 LITTER SAMPLES
    Sample Type: Litter collections were obtained from 49 positions per treatment block (i.e., rows 3 through 9 including the 7 centered positions). At each position litter was collected in a plastic basket with a collection area of 0.2 m2.

    Year Collected: 1996
    Collections were made on May 30, Aug 15, Sep 9, Sep 30, Oct 17, Nov 5, Nov 19, and Dec 31.

    Analyses: Total mass of leaf, non-leaf, and acorn litter by basket location and date.

    Sample Condition: Coarse ground. One leaf litter sample for each core position has been saved (Key positions for rows 3, 6, and 9 for 27 total samples). These ground samples included pooled materials from the fall collections (Sep 9 - Dec 31).  Selected twig samples have also been saved.
    .
    Reference:  Hanson PJ, Todd DE, Joslin JD (2003) Canopy production.  In: Hanson PJ, Wullschleger SD, Eds, North American Temperate Deciduous Forest Responses to Changing Precipitation Regimes. Springer, New York, Ecological Studies 166:303-315.


  • Sample Set #TDE.7

  • 1997 LITTER SAMPLES
    Sample Type: Litter collections were obtained from 49 positions per treatment block (i.e., rows 3 through 9 including the 7 centered positions). At each position litter was collected in a plastic basket with a collection area of 0.2 m2.

    Year Collected: 1997
    Collections were made on May 20, Aug 19, Sep 19, Oct 13, Oct 30, Nov 18, Dec 16.

    Analyses: Total mass of leaf, non-leaf litter, and acorn mass by basket location and date.

    Sample Condition: Coarse ground. One leaf litter sample for each core position has been saved (Key positions for rows 3, 6, and 9 for 27 total samples). These ground samples included pooled materials from the fall collections (Sep 19 - Dec 16).  Selected twig samples have also been saved.
    .
    Reference:  Hanson PJ, Todd DE, Joslin JD (2003) Canopy production.  In: Hanson PJ, Wullschleger SD, Eds, North American Temperate Deciduous Forest Responses to Changing Precipitation Regimes. Springer, New York, Ecological Studies 166:303-315.


  • Sample Set #TDE.8

  • 1998 LITTER SAMPLES
    Sample Type: Litter collections were obtained from 49 positions per treatment block (i.e., rows 3 through 9 including the 7 centered positions). At each position litter was collected in a plastic basket with a collection area of 0.2 m2.

    Year Collected: 1998
    Collections were made on Jun 16, Aug 18, Sep 4, Sep 28, Oct 20, Nov 4, Nov 20, and Dec 10.

    Analyses: Total mass of leaf, non-leaf, and acorn litter by basket location and date.

    Sample Condition: Coarse ground. One leaf litter sample for each core position has been saved (Key positions for rows 3, 6, and 9 for 27 total samples). These ground samples included pooled materials from the fall collections (Sep 4 - Dec 10).  Selected twig samples have also been saved.

    Reference:  Hanson PJ, Todd DE, Joslin JD (2003) Canopy production.  In: Hanson PJ, Wullschleger SD, Eds, North American Temperate Deciduous Forest Responses to Changing Precipitation Regimes. Springer, New York, Ecological Studies 166:303-315..


  • Sample Set #TDE.9

  • 1999 LITTER SAMPLES
    Sample Type: Litter collections were obtained from 49 positions per treatment block (i.e., rows 3 through 9 including the 7 centered positions). At each position litter was collected in a plastic basket with a collection area of 0.2 m2.

    Year Collected: 1999
    Collections were made on May 31, Aug 12, Sep 27, Oct 18, Nov 10, Nov 30, and Jan 6.

    Analyses: Total mass of leaf, branch, and acorn, and spring flowers/seeds by basket location and date.  The species composition of the 1995 samples has also been estimated for the following: chestnut oak, white oak, other oaks, maples, yellow-poplar, Sourwood/blackgum, pine, misc. unidentifiable leaves and flowers etc., twigs and acorns.

    Sample Condition: Coarse ground. One leaf litter sample for each core position has been saved (Key positions for rows 3, 6, and 9 for 27 total samples). These ground samples included pooled materials from the fall collections (Sep 27 - Jan 6).  Selected twig samples have also been saved.

    Reference:  Hanson PJ, Todd DE, Joslin JD (2003) Canopy production.  In: Hanson PJ, Wullschleger SD, Eds, North American Temperate Deciduous Forest Responses to Changing Precipitation Regimes. Springer, New York, Ecological Studies 166:303-315.


  • Sample Set #TDE.10

  • 2000 LITTER SAMPLES
    Sample Type: Litter collections were obtained from 49 positions per treatment block (i.e., rows 3 through 9 including the 7 centered positions). At each position litter was collected in a plastic basket with a collection area of 0.2 m2.

    Year Collected: 2000
    Collections were made on May 19, Sep 14, Oct 18, Nov 6, Nov 29, and Jan 2.

     Analyses: Total mass of leaf, branch, and acorn, and spring flowers/seeds by basket location and date.

    Sample Condition: Coarse ground. One leaf litter sample for each sampling position has been saved (147 samples). These ground samples included pooled materials from the fall collections (Sep 14 to Jan 2).  Selected twig samples have also been saved.

    Reference:  Hanson PJ, Todd DE, Joslin JD (2003) Canopy production.  In: Hanson PJ, Wullschleger SD, Eds, North American Temperate Deciduous Forest Responses to Changing Precipitation Regimes. Springer, New York, Ecological Studies 166:303-315.


  • Sample Set #TDE.11

  • 2001 LITTER SAMPLES
    Sample Type: Litter collections were obtained from 49 positions per treatment block (i.e., rows 3 through 9 including the 7 centered positions). At each position litter was collected in a plastic basket with a collection area of 0.2 m2.

    Year Collected: 2001
    Collections were made on Jun 7, Aug 15, Oct 16, Oct 31, and Dec 12.

    Analyses: Total mass of leaf, branch, and acorn, and spring flowers/seeds by basket location and date.

    Sample Condition: Coarse ground. One leaf litter sample for each core position has been saved (Key positions for rows 3, 6, and 9 for 27 total samples). These ground samples included pooled materials from the fall collections (Oct 16 to Dec 12).  Selected twig samples have also been saved.


  • Sample Set #TDE.12

  • 2002 LITTER SAMPLES
    Sample Type: Litter collections were obtained from 49 positions per treatment block (i.e., rows 3 through 9 including the 7 centered positions). At each position litter was collected in a plastic basket with a collection area of 0.2 m2.

    Year Collected: 2002
    Collections were made on May 30, Sep 1, Oct 16, Nov 7, Nov 19, and Dec 20.

    Analyses: Total mass of leaf, branch, and acorn, and spring flowers/seeds by basket location and date.

    Sample Condition: Coarse ground. One leaf litter sample for each core position has been saved (Key positions for rows 3, 6, and 9 for 27 total samples). These ground samples included pooled materials from the fall collections (Oct 16 to Dec 20).


  • Sample Set #TDE.13

  • 2003 LITTER SAMPLES
    Sample Type: Litter collections were obtained from 49 positions per treatment block (i.e., rows 3 through 9 including the 7 centered positions). At each position litter was collected in a plastic basket with a collection area of 0.2 m2.

    Year Collected: 2002
    Collections were made on April 29, August 27, October 1, October 13, October 29, November 11, and December 15.

    Analyses: Total mass of leaf, branch, and acorn, and spring flowers/seeds by basket location and date.

    Sample Condition: Coarse ground. One leaf litter sample for each core position has been saved (Key positions for rows 3, 6, and 9 for 27 total samples). These ground samples included pooled materials from the fall collections (Oct 1 to Dec 15).


  • Sample Set #TDE.14

  • 1999 Oi and Oe/Oa Organic Layers
    Sample Type: Collections of the standing crop of Oi and Oe/Oa layers at randomly distributed locations along 3 TDE transects corresponding roughly to rows 8 (upper), 5 (middle) and 3 (lower).  Collections were done in 0.25 m2 rings.

    Year Collected: 1999
    Collections were made on February 8, 1999

    Analyses: Total organic mass of the Oi and Oe/Oa layer corrected for ash content.

    Sample Condition: Coarse ground. One sample for each position along the transects (n = 15 per transect for a total of 45 samples).  


  • Sample Set #TDE.15

  • 2002 Oi and Oe/Oa Organic Layers
    Sample Type: Collections of the standing crop of Oi and Oe/Oa layers at randomly distributed locations along 3 TDE transects corresponding roughly to rows 8 (upper), 5 (middle) and 3 (lower).  Collections were done in 0.25 m2 rings.

    Year Collected: 2002
    Collections were made February 14, 2002.

    Analyses: Total organic mass of the Oi and Oe/Oa layer corrected for ash content.

    Sample Condition: Coarse ground. One sample for each position along the transects (n = 15 per transect for a total of 45 samples).


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