TY - JOUR
T1 - Epiphyte diversity on coffee bushes
T2 - A management question?
AU - Mondragon, Demetria
AU - Santos-Moreno, Antonio
AU - Damon, Anne
N1 - Funding Information:
This project was supported by the National Council for Science and Technology of Mexico (CONACyT-SEMARNAT-2002-C01-697), and the Centre for Postgraduate Studies and Research (CGPI), of the National Polytechnic Institute of Mexico. We thank Rodolfo Solano and Remedios Aguilar for the identification of herbarium specimens.
PY - 2009/10
Y1 - 2009/10
N2 - We evaluated the diversity of vascular epiphytes on coffee bushes growing in shaded plantations with different management intensities in terms of the removal of epiphytes: high (all branches), moderate (some branches) and zero (no removal). We chose 160 coffee-bushes within plots with different management regimes and evaluated the species richness and abundance of the vascular epiphytes adhered to those trees. We estimated diversity (Shannon-Weaver index), and dominance (Berger-Parker index) and compared abundances. We found 20, 24 and 20 species of vascular epiphytes in the zero, moderate and high management plots, respectively. The families with greatest species richness were: ferns (5, 8, 8 spp.), orchids (7, 7, 6 spp.) and bromeliads (3, 3, 2 spp.). Abundance was statistically similar for all three management intensities, while diversity was numerically greater at moderate management intensities (1.69) and significantly smaller for intensive management (1.38) (4.28; 108; p < 0.001). Two species were exclusive to moderate management intensity plots Pleopeltis angusta var stenoloma and Anthurium scandens, Pleopeltis astrolepis was the dominant species in all management regimes (0.617, 0.532, and 0.673). High management intensity had a negative effect on epiphyte diversity. The possible impact of other factors is discussed.
AB - We evaluated the diversity of vascular epiphytes on coffee bushes growing in shaded plantations with different management intensities in terms of the removal of epiphytes: high (all branches), moderate (some branches) and zero (no removal). We chose 160 coffee-bushes within plots with different management regimes and evaluated the species richness and abundance of the vascular epiphytes adhered to those trees. We estimated diversity (Shannon-Weaver index), and dominance (Berger-Parker index) and compared abundances. We found 20, 24 and 20 species of vascular epiphytes in the zero, moderate and high management plots, respectively. The families with greatest species richness were: ferns (5, 8, 8 spp.), orchids (7, 7, 6 spp.) and bromeliads (3, 3, 2 spp.). Abundance was statistically similar for all three management intensities, while diversity was numerically greater at moderate management intensities (1.69) and significantly smaller for intensive management (1.38) (4.28; 108; p < 0.001). Two species were exclusive to moderate management intensity plots Pleopeltis angusta var stenoloma and Anthurium scandens, Pleopeltis astrolepis was the dominant species in all management regimes (0.617, 0.532, and 0.673). High management intensity had a negative effect on epiphyte diversity. The possible impact of other factors is discussed.
KW - Dominance
KW - Epiphyte conservation
KW - Mexico
KW - Phorophyte
KW - Vascular epiphyte
UR - http://www.scopus.com/inward/record.url?scp=71049168296&partnerID=8YFLogxK
U2 - 10.1080/10440040903235227
DO - 10.1080/10440040903235227
M3 - Artículo
SN - 1044-0046
VL - 33
SP - 703
EP - 715
JO - Journal of Sustainable Agriculture
JF - Journal of Sustainable Agriculture
IS - 7
ER -