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- Title
Estructura forestal y regeneración natural de poblaciones del pino de monte (Podocarpus parlatorei Pilg.) en el Departamento de Santa Cruz, Bolivia.
- Authors
NINA-CHURQUI, ROMEL E.; PINTO-VIVEROS, MARCO A.; SÁNCHEZ, JHOSELIN; ARROYO-HERBAS, LILIANA; ESPINOZA, DIEGO; BANEGAS, ERWIN; PANTOJA, SERGIO; TOLEDO, MARISOL
- Abstract
The mountain pine (Podocarpus parlatorei Pilg.) is endemic to the southern montane forests, historically over-exploited for timber purposes and currently is in danger of extinction. In Bolivia, also presents information gaps regarding its population structure and dynamics. We describe its forest structure (adult individuals, ≥10 cm in diameter) and regeneration (young individuals, <10 cm) in the complex of the bolivian-tucuman pine forest in the Department of Santa Cruz (Bolivia). Sixteen localities were evaluated in the municipalities of Vallegrande, Postrer Valle, Pucara and Quirusillas (81 sampling plots). The densities (individuals/ha) of structure and regeneration were contrasted (Kruskal-Wallis tests) between municipalities and diameter categories; the association (Spearman correlations) of both variables was analyzed with each other, with elevation, slope and tree cover. The forest structure was classified into five diameter categories and was distributed in the form of an inverted J; Vallegrande presented the highest density (650 individuals/ha), higher than that determined for the landscape in general (200 individuals/ha). Regeneration, among its four diameter categories, also presented an inverted J distribution; the greatest regeneration was quantified in Pucara (1700 individuals/ha), which exceeded what was recorded at the landscape level (1100 individuals/ha). Only three variables presented significant associations (P<0.05); elevation (ϱ=0.23) and tree cover (ϱ=0.43) were positively related to forest structure, while regeneration was negatively related (ϱ=-0.30). The forest structure and the natural regeneration of the mountain pine populations revealed that the species is far from presenting a good conservation status.
- Subjects
MOUNTAIN forests; ENDANGERED species; POPULATION dynamics; MOUNTAIN ecology; KRUSKAL-Wallis Test
- Publication
Ecologia Austral, 2022, Vol 32, Issue 2, p307
- ISSN
0327-5477
- Publication type
Article
- DOI
10.25260/ea.22.32.2.0.1873