Abstract
Abstract A study of the effect of different levels of basal area removal on stand and tree growth was established in a second growth forest in Quintana Roo, Mexico. In five 0.5 ha plots (subdivided into 10 × 10 m2 plots), data were collected periodically for 15 years and used to estimate stand and diameter growth of 30 tropical forest tree species. Net basal area per hectare growth was almost 0, -0.1% yr-1. For surviving trees only, basal area growth was 1.6% per year. On the 10 × 10 m2 plots basal area growth was strongly correlated to initial basal area when only surviving trees were considered. Maximum average diameter growth rate was 0.31 cmy-1 (Swietenia macrophylla King). Most species grew relatively slowly, probably due to low quality of the site resulting from calcareous soils and low precipitation rates and possibly due to being in a relatively old second growth forest. Mortality by species during the 15 years of the study ranged from 0% to 40%. The results are contrary to information used to develop management plans for the forests of the area and should be used to modify these plans to avoid overcutting.
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Claims 6
Claim · model-written summary
Net basal area growth was almost zero at -0.1% per year.
Verbatim
e0“Net basal area per hectare growth was almost 0, -0.1% yr-1”
e1“30 tropical forest tree species”
Claim · model-written summary
Surviving trees had basal area growth of 1.6% per year.
Not reportedDirection
Verbatim
e0“For surviving trees only, basal area growth was 1.6% per year”
e1“30 tropical forest tree species”
Claim · model-written summary
Basal area growth among surviving trees was strongly correlated with initial basal area.
Not reportedDirection
Verbatim
e0“basal area growth was strongly correlated to initial basal area when only surviving trees were considered”
t0“Tropical Forest”
Claim · model-written summary
Swietenia macrophylla had the maximum average diameter growth of 0.31 cmy-1.
- Taxon
- Swietenia macrophylla King
Swietenia macrophyllae0 - Outcome
- Maximum average diameter growth ratee0
- Direction
- Maximume0
- Value
- 0.31 cmy-1e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Maximum average diameter growth rate was 0.31 cmy-1 (Swietenia macrophylla King)”
Claim · model-written summary
Most species grew slowly.
Verbatim
e0“Most species grew relatively slowly”
e1“30 tropical forest tree species”
Claim · model-written summary
Species mortality ranged from 0% to 40% over 15 years.
Verbatim
e0“Mortality by species during the 15 years of the study ranged from 0% to 40%”
e1“30 tropical forest tree species”