Abstract
ABSTRACT: Translocation of rare populations is regarded as the last resort for the conservation of species whose habitat destruction is imminent. The objective of the present study was to evaluate the effect of two height classes and three leaf reduction intensities on growth and increases in height, stem diameter, survival, and new leaf production in seedlings of Aspidosperma cylindrocarpon (peroba) obtained via rescue seedlings in a remnant of tropical semi deciduous forest. We recovered 240 individuals that were divided into two height classes (Class I-5 to 15cm and Class II-20 to 35cm) and subjected to three leaf reduction intensities (0%, 50%, and 100%), which were then transported to a shade house with 50% light reduction. Measurements of height, stem diameter, and new leaf production were collected 8 times at 0, 15, 60, 75, 90, 105, 120, and 135 days, and survival rate was measured at day 135. The average survival rate was 82.9%; 77.5% for one Class I (5-15cm) and 88.3% for Class II (20-35cm). Higher seedling growth was observed for the 0% leaf reduction treatment in both height classes. The leaves insertion were greater in the 100% cuts, with a decrease observed over time. It is advisable to restore A. cylindrocarpon seedlings in two height classes owing to the high survival rate, leaf appearance, and growth reported in the present study. The no-leaf reduction treatment (0%) is the most viable alternative for the production of A. cylindrocarpon seedlings, via rescue seedlings.
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Claims 8
Claim · model-written summary
Mean rescued seedling survival was 82.9%.
- Taxon
- Aspidosperma cylindrocarpon
Aspidosperma cylindrocarpont0 - Outcome
- survival ratee0
- Value
- 82.9%e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The average survival rate was 82.9%; 77.5% for one Class I (5-15cm) and 88.3% for Class II (20-35cm).”
t0“Aspidosperma cylindrocarpon”
Claim · model-written summary
Class I seedling survival was 77.5%.
- Taxon
- Aspidosperma cylindrocarponAspidosperma cylindrocarpont0
- Material
- Class Ie0
- Outcome
- survival ratee0
- Value
- 77.5%e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The average survival rate was 82.9%; 77.5% for one Class I (5-15cm) and 88.3% for Class II (20-35cm).”
t0“Aspidosperma cylindrocarpon”
Claim · model-written summary
Class II seedling survival was 88.3%.
- Taxon
- Aspidosperma cylindrocarponAspidosperma cylindrocarpont0
- Material
- Class IIe0
- Outcome
- survival ratee0
- Value
- 88.3%e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The average survival rate was 82.9%; 77.5% for one Class I (5-15cm) and 88.3% for Class II (20-35cm).”
t0“Aspidosperma cylindrocarpon”
Claim · model-written summary
Seedling growth was higher with no leaf reduction in both height classes.
- Taxon
- Aspidosperma cylindrocarponAspidosperma cylindrocarpont0
- Treatment
- 0% leaf reduction treatmente0
- Outcome
- seedling growthe0
- Direction
- Highere0
- Qualifier
- both height classese0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Higher seedling growth was observed for the 0% leaf reduction treatment in both height classes.”
t0“Aspidosperma cylindrocarpon”
Claim · model-written summary
Leaf insertion was greater with complete leaf cuts and declined over time.
- Taxon
- Aspidosperma cylindrocarponAspidosperma cylindrocarpont0
- Treatment
- 100% cutse0
- Outcome
- leaves insertione0
- Direction
- greatere0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The leaves insertion were greater in the 100% cuts, with a decrease observed over time.”
t0“Aspidosperma cylindrocarpon”
Claim · model-written summary
Leaf insertion decreased over time after complete leaf cuts.
- Taxon
- Aspidosperma cylindrocarponAspidosperma cylindrocarpont0
- Treatment
- 100% cutse0
- Outcome
- leaves insertione0
- Direction
- decreasee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The leaves insertion were greater in the 100% cuts, with a decrease observed over time.”
t0“Aspidosperma cylindrocarpon”
Claim · model-written summary
The authors advise restoration using seedlings in both height classes.
- Taxon
- A. cylindrocarponAspidosperma cylindrocarpone0
- Outcome
- restore A. cylindrocarpon seedlings in two height classese0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“It is advisable to restore A. cylindrocarpon seedlings in two height classes owing to the high survival rate, leaf appearance, and growth reported in the present study.”
Claim · model-written summary
The authors recommend no leaf reduction for producing rescued seedlings.
- Taxon
- A. cylindrocarponAspidosperma cylindrocarpone0
- Outcome
- no-leaf reduction treatment (0%)e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The no-leaf reduction treatment (0%) is the most viable alternative for the production of A. cylindrocarpon seedlings, via rescue seedlings.”