Dataset Overview

We measured shoot architecture, photosynthesis, survival and growth by seedlings of three shade-tolerant species of maple (Acer pensylvanicum, A. rubrum, A. saccharum) in an experimental test of the gap partitioning hypothesis. Trees were felled to create a total of six cleared, elliptical canopy gaps of two sizes (8m x 12m, 75m2; 16m x 24m, 300m2). Naturally-established, undamaged, unbranched seedlings (15-30 cm tall, 10-20+ years old) of the three study species (2160 total, 720 per species) were transplanted into five plot locations (center and NW, NE, SW, and SE gap edges) within all six gaps and matching understory sites one year before gap creation. All plots were weeded regularly and spaded annually along the edges to remove above and below-ground competition. Measurements of microclimates and Non-competitive seedling responses were made over one year before and two years following gap release.

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This project used shade tolerant maple seedlings to test the gap partitioning hypothesis.

Data Collection Status

Data collection for this dataset has been completed

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Data Availability

This dataset is available to download from another website

Data License

Linked - Third party determines data license

Preferred Citation

Sipe T, Bazzaz F. 2003. Gap Partitioning Among Maples at Harvard Forest 1986-1989. Harvard Forest Data Archive: HF049. Available at:

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  • Gap Partitioning Among Maples at Harvard Forest 1986-1989
  • Harvard Forest
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