Abstract:
Conservation and sustainable use require the description of the environments where species
develop. The objectives of this research were:1) determine edaphoclimatic diversity patterns and
ecological descriptors associated with geographic distribution of species of Guadua and, 2)
identify the climatic variables of greatest importance for distribution and environmental
similarity between seven Mexican bamboo species. Using 192 accessions and an environmental
information system composed of 40 edaphoclimatic variables in raster format with spatial
resolution of 1 km2
, diversity patterns of distribution areas of each specie were identified, as well
as ecological descriptors through the use of Geographic Information Systems tools. Influence of
edaphoclimatic variables on the geographical distribution was determined by multivariate
techniques using Principal Component Analysis and Cluster Analysis. In distribution areas of
accessions considered, seven climatic types were identified, predominantly tropical, monsoon
(Am) and tropical, Savannah (Aw) and 12 soil units, predominantly vertisol. Principal
component analysis determined that eight variables were the most important to determine the
geographic distribution of these accessions. In addition, cluster analysis identified six groups of
species according to their similarity. Information about edaphoclimatic conditions and the
environmental breadth of the distribution of seven Mexican native bamboo species was provided. |
