Status: 

Ongoing

Title

Canopy Trimming Experiment (CTE) Litterfall
Summary

Short name: 

luqmetadata162

Data set ID: 

162

Abstract: 

This data set shows forest litter production and its response to the canopy trimming and debris addition or removal treatments. In addition, it shows patterns of interannual variation that can be related to environmental variables. In combination with data set 111 (MRCE Litterfall data), this is the long-term monitoring of leaf litter production at El Verde Research Area.  The data reported here are for mass of litterfall pooled among collection baskets placed in the inner 20x20 m measurement plots collected at two-week intervals, beginning two years before the first treatments were applied. The litter mass data are reported for litter separated by plant parts. Litterfall contributes to mobilization of organic matter and nutrients from primary producers to soil.

Dates
Date Range: 
2002-11-14 00:00:00 to 2016-09-22 00:00:00

Publication Date: 

2015-05-08 00:00:00
People

Owner/Creator: 

Contact: 

Methodology

Methods: 

Canopy trimming began in October 2004 and were completed by June 2005 (see Table 1 from Richardson et al., submitted). Litter was stockpiled, weighed, and redistributed onto the appropriate treatment plots beginning with Block B on October 2004 and ending with Block A in June 2005. The litterfall mass data set is comprised of litterfall that was collected at two-week intervals from ten baskets located randomly in the inner 20 x 20 m measurement portion of each plot beginning two years prior to the first treatment (November 2002). Baskets were 1.75 m X 1.75 m, and 1.3 m from the ground. The litter was pooled among baskets within plots, oven dried for at least two weeks (to constant weight) at 40C, then sorted into leaves, wood, reproductive parts (flowers, fruits and seeds), and miscellaneous material (unidentifiable plant parts, bark, lichens, etc.) and weighed.

 

Table 1. Treatments by block and plot number, subplot locations of litter baskets, and dates of canopy trimming applied to appropriate plots (NA is not applicable – trimming not applied).

Block

Treatment

Plot

Subplots

Dates canopy was trimmed

Dates debris was applied

A

Control

1

2, 4, 5, 12, 14

NA

A

Trim & clear

2

2, 3, 9, 10, 12

22 Mar. – 13 Apr. 2005

NA

A

Trim +debris

3

1, 4, 10, 14, 15

28 Mar. – 19 Apr. 2005

 

A

No trim +debris

4

1, 4, 7, 9, 12

NA

B

Control

1

1, 2, 4, 8, 13

NA

NA

B

Trim +debris

2

2, 3, 9, 12, 16

26 Oct. – 21 Dec. 2004

 

B

No trim +debris

3

3, 12, 14, 15, 16

NA

 

B

Trim & clear

4

1, 7, 14, 15 (not in 4)

8 Nov. – 28 Dec. 2004

NA

C

No trim +debris

1

1, 3, 5, 12, 16

NA

 

C

Trim +debris

2

2, 3, 7, 12, 16

2 Feb. – 9 Mar. 2005

 

C

Trim & clear

3

1, 4, 10, 16 (not in 8)

25 Jan. – 9 Mar. 2005

NA

C

Control

4

1, 3, 11, 12, 13

NA

NA

Additional information: 

REFERENCES :
Goldenberg, S.B., C.W. Landsea, A.M. Mestas-Nuñez and W.M. Gray. 2001. The recent increase in Atlantic hurricane activity: causes and implications. Science 293: 474-479.

Holland, G.H. and P.J. Webster. 2007. Heightened tropical cylone activity in the North Atlantic: natural variability or climate trend? Phil. Trans.,R.Soc. A 365: 2695-2716.

Saunders, M.A. and S.A. Lea. 2008. Large contribution of sea surface warming to recent increase in Atlantic hurricane activity. Nature 451: 557-560.

Status: 

Ongoing

Time Period: 

Long-Term
Categories