Provision of woodfuel is an important ecosystem service of dry forests and woodlands. However, charcoal production through selective logging of preferred hardwood species has the potential to alter the physiognomic composition of the residual or re-growth woodlands and may lead to their deterioration and degradation. This study, conducted through forest inventory in Mutomo District in Kenya, assessed the impact of charcoal production on unprotected dry woodlands in terms of tree density, targeted species basal area, species richness, evenness and Shannon diversity. The parameters of the disturbed woodlands were evaluated for significant differences with those of the neighbouring protected Tsavo East National Park, which served as a reference for an ecologically undisturbed ecosystem. By evaluating a consequence of tree harvesting for charcoal production, this study confirmed the overall significant differences between the protected and unprotected woodlands in all the tested parameters. To confirm if the differences in the land-covers of the woodlands had any influence on their degradation, all mentioned parameters were compared between the four differentiated classes and their respective control plots in the protected areas. At the "land-cover level", the statistically significant difference in the basal area of tree species preferred for charcoal production between the protected and unprotected open trees confirms that the class with a high density of large mature trees is the prime target of charcoal producers. In addition, there seems to be a general trend of lower values of tree species richness, evenness and Shannon diversity for the unprotected woodlands subjected to charcoal production. On the other hand, the disturbed woodlands display the potential to recover through their comparably high saplings density. The findings make an important contribution to the discourse on the impact of charcoal production in dry woodlands, a topic that is highly controversial among researchers.
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Glacier forelands are highly suitable environments to study vegetation dynamics. Due to time constraints, the method of ‘space for time substitution’ is commonly employed, using spatially different sites to reconstruct a temporal sequence. However, migration patterns, growth performance, shifts in frequency or abundance of species, changes in biological traits, setbacks, etc. can only be detected by long‐term monitoring on permanent plots. In 2005, a set of permanent plots were established immediately in front of two glacier termini in the European Alps (Goldbergkees, Austria; Lenksteinferner, Italy), which were revisited every second year thereafter. Changes in ground cover and individual numbers of vascular plants as well as structural features such as life‐form composition and dispersal biology types are recorded. The six visits between 2005 and 2015 allow for a detailed appraisal of early vegetation development in glacier forelands, which is surprisingly swift and primarily progressive, but locally interrupted by temporary setbacks due to disturbances. This study contributes to a better understanding of high alpine vegetation dynamics in paraglacial landscapes, that is, transitional landscapes characterized by particular rate and direction of change.
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