Association coefficient between species of semi-evergreen forest in Calakmul, Mexico
Por:
Gomez Velazquez, Alejandra, Tadeo Noble, Alfredo Esteban, Beltran-Rodriguez, Leonardo, Guizar Nolazco, Enrique, Apodaca Martinez, Maribel, Leyva Ovalle, Angel
Publicada:
1 ene 2020
Categoría:
Forestry
Resumen:
Association coefficients measure interrelation level between the
attributes of two species within populations. The objective of this work
was to analyze the association patterns among the 10 species with the
highest importance value index (IVI) in a semi-evergreen forest of
Calakmul, Mexico. The 10 taxa were expected to be independently
distributed within the community, therefore no interspecific association
would occur. Systematically, 479 sampling units were established on a
500-ha surface in the ejido Gustavo Diaz Ordaz, Calakmul. Eighty-five
tree species, 36 genera and 32 families were recorded. IVI was
estimated, and with the 10 most important species, an chi(2) analysis
was performed to test independence in 45 possible combinations of
species pairs. Cole's interspecific association coefficient was
considered based on the chi(2) significance test. The 10 most important
species represent 47.98 % of the IVI. The Cole association coefficient
identified that 17 pairs, out of 45, were distributed in a dependent way
regarding another species, while the rest were indifferent to the
presence of these taxa. Bursera simaruba, the species with the highest
IVI, was related to three species, while Metopium brownei (third
position of IVI) was related to six taxa. It is proposed to apply this
procedure as an independent though complementary statistical test to
Ripley's K-12(t), to establish numerical criteria for the selection and
analysis of spatial data.
Filiaciones:
Gomez Velazquez, Alejandra:
Univ Autonoma Chapingo, Div Ciencias Forestales, Texcoco, Mexico
Tadeo Noble, Alfredo Esteban:
Inst Tecnol Super Venustiano Carranza, Av Tecnol S-N, Puebla, Mexico
Beltran-Rodriguez, Leonardo:
Univ Nacl Autonoma Mexico, Inst Biol, Lab Etnobot Ecol, Jardin Bot, Ciudad De Mexico, Mexico
Guizar Nolazco, Enrique:
Univ Autonoma Chapingo, Div Ciencias Forestales, Texcoco, Mexico
Apodaca Martinez, Maribel:
Inst Tecnol Super Venustiano Carranza, Av Tecnol S-N, Puebla, Mexico
Leyva Ovalle, Angel:
Univ Autonoma Chapingo, Div Ciencias Forestales, Texcoco, Mexico
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