DISTRIBUTION AND ABUNDANCE OF Jatropha dioica IN THE NORTHERN CENTER OF MEXICO.
Leatherstem plants (Jatropha dioica) live in arid and semiarid climates, it is used in traditional medicine and could also be utilized as an industrial raw material, which is why this plant is vital to the economy of rural populations. The fundamental aspects of its distribution and abundance are unknown, as well as the environmental factors that determine them. The objective of this study was to determine its distribution, abundance, and the variables that influence its density, height, and biomass of stems. The area of study consisted of 86 493 km2 , and the sampling design consisted in locating sites using a grid of 5?5 km with the software program ArcGIS 9.2 and scale 1: 250 000, and 3 % of the squares were randomly selected (234 sampling sites). We conducted the fieldwork from February 2011 to March 2013. We registered the abundance and height of stems in each site and measured the altitude and slope of the terrain in plots of 10?100 m. By mapping, we registered the physiographic subprovinces (PSP), the types of vegetation and the types of soil. For every individual measured in the field, we adjusted a tabulation of equivalence between height and biomass from 500 stems with different heights. The abundance, height, and weight of the stems between de PSPs, type of vegetation, type of soil, slope, and altitude of the terrain were analyzed using the Kruskal-Wallis non-parametric test in each case. There were significant differences in density and weight between every variable. The height was only different in the type of vegetation and slope. The abundance of stems of J. dioica was higher in terrains with little slope and with scrub vegetation, the distribution in North-central Mexico is broad, and the habitat conditions influence the distribution and abundance.
| Main Authors: | , , , , , |
|---|---|
| Format: | Digital revista |
| Language: | spa |
| Published: |
Colegio de Postgraduados
2019
|
| Online Access: | https://www.agrociencia-colpos.org/index.php/agrociencia/article/view/1794 |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|