Tree species diversity driven by environmental and anthropogenic factors in tropical dry forest fragments of central Veracruz, Mexico

2009 ◽  
Vol 18 (12) ◽  
pp. 3269-3293 ◽  
Author(s):  
Guadalupe Williams-Linera ◽  
Francisco Lorea
Keyword(s):  
Species Diversity ◽  
Tree Species ◽  
Tropical Dry Forest ◽  
Dry Forest ◽  
Anthropogenic Factors ◽  
Forest Fragments ◽  
Tree Species Diversity

scholarly journals Tree Species Diversity, Composition and Aboveground Biomass Across Dry Forest Land-Cover Types in Coastal Ecuador

2021 ◽  
Vol 14 ◽  
pp. 194008292199541
Author(s):  
Xavier Haro-Carrión ◽  
Bette Loiselle ◽  
Francis E. Putz
Keyword(s):  
Species Diversity ◽  
Land Cover ◽  
Community Composition ◽  
Aboveground Biomass ◽  
Tree Species ◽  
Dry Forest ◽  
Stem Density ◽  
Tree Species Diversity ◽  
Land Cover Types ◽  
Schizolobium Parahyba

Tropical dry forests (TDF) are highly threatened ecosystems that are often fragmented due to land-cover change. Using plot inventories, we analyzed tree species diversity, community composition and aboveground biomass patterns across mature (MF) and secondary forests of about 25 years since cattle ranching ceased (SF), 10–20-year-old plantations (PL), and pastures in a TDF landscape in Ecuador. Tree diversity was highest in MF followed by SF, pastures and PL, but many endemic and endangered species occurred in both MF and SF, which demonstrates the importance of SF for species conservation. Stem density was higher in PL, followed by SF, MF and pastures. Community composition differed between MF and SF due to the presence of different specialist species. Some SF specialists also occurred in pastures, and all species found in pastures were also recorded in SF indicating a resemblance between these two land-cover types even after 25 years of succession. Aboveground biomass was highest in MF, but SF and Tectona grandis PL exhibited similar numbers followed by Schizolobium parahyba PL, Ochroma pyramidale PL and pastures. These findings indicate that although species-poor, some PL equal or surpass SF in aboveground biomass, which highlights the critical importance of incorporating biodiversity, among other ecosystem services, to carbon sequestration initiatives. This research contributes to understanding biodiversity conservation across a mosaic of land-cover types in a TDF landscape.

The effects of individual tree species on species diversity in a tropical dry forest change throughout ontogeny

Ecography ◽  
2015 ◽  
Vol 39 (3) ◽  
pp. 329-337 ◽  
Author(s):  
C. I. Espinosa ◽  
M. de la Cruz ◽  
A. Jara-Guerrero ◽  
E. Gusmán ◽  
A. Escudero
Keyword(s):  
Species Diversity ◽  
Tree Species ◽  
Tropical Dry Forest ◽  
Dry Forest ◽  
Forest Change ◽  
Individual Tree

scholarly journals Tree species diversity in a seasonally-dry forest: the case of the Pinkaití site, in the Kayapó Indigenous Area, Southeastern limits of the Amazon

2004 ◽  
Vol 34 (3) ◽  
pp. 435-443 ◽  
Author(s):  
Rodolfo Salm
Keyword(s):  
Species Diversity ◽  
Forest Structure ◽  
Tree Species ◽  
Natural Disturbance ◽  
Dry Forest ◽  
Research Station ◽  
Tree Species Diversity ◽  
Seasonally Dry ◽  
Great Heterogeneity ◽  
History Of

This study investigates patterns of forest structure and tree species diversity in an anthropogenic palm grove and undisturbed areas at the seasonally-dry Pinkaití research station, in the Kayapó Indigenous Area. This site, managed by the Conservation International do Brasil, is the most southeastern site floristically surveyed in the Amazon until now. The secondary and a nearby undisturbed forest were sampled in a group of 52 floristic plots of 0.0625-ha (25x25-m) where all trees with DBH > 10 cm were measured and identified. The analyses were complemented with other two floristic plots of 1-ha (10x1000-m). The present study has shown that the Pinkaití, like other seasonally-dry forests, have great heterogeneity in forest structure and composition, associated with biotic characteristics of the most important tree species, natural disturbance and history of land-use. The palm grove, moderately dominated by the arborescent palm Attalea maripa (Aubl.) Mart., presented high tree species diversity and was floristically similar to undisturbed forests at the study site. It is discussed the importance of large arborescent palms for the seasonally-dry Amazon forests regeneration.

Tree Species Diversity of the Remaining Forest Fragments in Cavite, Luzon Island, Philippines

2017 ◽  
Vol 11 (2) ◽  
Keyword(s):  
Species Diversity ◽  
Tree Species ◽  
Diversity Index ◽  
Ecological Status ◽  
The Philippines ◽  
Direct Result ◽  
Forest Fragments ◽  
Tree Species Diversity ◽  
Lowland Forest ◽  
Anthropogenic Threats

Cavite has remaining secondary lowland forest fragments that are believed to be either remnant from commercial logging activities ca. 25-45 years ago or as a direct result of land conversions for agriculture or human settlements. There have been no vegetation studies among these forest fragments except in Mt. Palay-Palay in 2004. The aim of the research was to describe these remaining forest fragments (in addition to Mt. Palay-Palay), their tree species diversity, composition, ecological assessment and current anthropogenic threats affecting these areas. Vegetation analysis was performed using the Point-Centered Quarter Method (PCQM) in 72 100-m transects in forest fragments with different habitats. Species diversity was computed using Shannon’s diversity index (H′). A total of 2,853 tree individuals belonging to 50 families, 127 genera, and 174 species was encountered. Species diversity indices (H′) in all forest fragments were high and their importance value indices (IVIs) fall within the range of IVIs of tropical forest inventories. Assessment of ecological status revealed that of the 174 species, 44 (25.3%) are endemic, 114 (65.5%) are native/indigenous, and 16 (9.2%) are exotic/introduced. Thirty-nine angiosperms are threatened representing 8.9% of all threatened angiosperms in the Philippines. Overall, Cavite’s remaining forest fragments are diverse in terms of tree species and all experience anthropogenic threats and it is highly recommended that they be protected and conserved including the diverse fauna and flora associated with these areas.

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