We found a match
Your institution may have access to this item. Find your institution then sign in to continue.
- Title
Edge effect and phenology in Erythroxylum tortuosum (Erythroxylaceae), a typical plant of the Brazilian Cerrado.
- Authors
Ishino, M. N.; De Sibio, P. R.; Rossi, M. N.
- Abstract
The edge of a forest fragment can be considered a zone of transition between the interior of the fragment and the surrounding habitat matrix. Plants along the edge are more exposed to disturbance and microclimate variation than interior plants, resulting in the so-called edge effect. In this study, we compared leaf area, fluctuating asymmetry and chemical (water, nitrogen and tannins) leaf traits between Erythroxylum tortuosum plants inhabiting the edge with those growing in the interior of a cerrado fragment in Brazil. We also describe the temporal variation in the vegetative and reproductive phenological events of E. tortuosum plants throughout the season. Nitrogen, leaf area and fluctuating asymmetry did not differ between the two plant groups. Young leaves of the edge plants had significantly higher levels of tannins and lower levels of water than those of interior plants. We suggest that differences in leaf chemical concentrations between edge and interior plants may occur due to factors such as light intensity, wind, temperature and leaf age rather than plant stress. With respect to plant phenology, most reproductive events occurred during the spring. Leal buds and young leaves prevailed during the rainy season. In the dry season, however, the vegetative events decreased due to leaf senescence followed by leaf abscission.
- Subjects
BRAZIL; ERYTHROXYLUM; CERRADO plants; PLANT phenology; SYMMETRY (Biology); EFFECT of stress on plants; PLANT physiology
- Publication
Brazilian Journal of Biology, 2012, Vol 72, Issue 3, p587
- ISSN
1519-6984
- Publication type
Article
- DOI
10.1590/S1519-69842012000300023