Browsing by Autor "Daniel M. Griffith"

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Comment on “The extent of forest in dryland biomes”
(American Association for the Advancement of Science, 2017) Daniel M. Griffith; Caroline E. R. Lehmann; Caroline A. E. Strömberg; Catherine L. Parr; R. Toby Pennington; Mahesh Sankaran; Jayashree Ratnam; Christopher J. Still; Rebecca Powell; Niall P. Hanan
Bastin <i>et al</i> (Reports, 12 May 2017, p. 635) infer forest as more globally extensive than previously estimated using tree cover data. However, their forest definition does not reflect ecosystem function or biotic composition. These structural and climatic definitions inflate forest estimates across the tropics and undermine conservation goals, leading to inappropriate management policies and practices in tropical grassy ecosystems.
Enrichment of big-leaf mahogany (Swietenia macrophylla King) in logging gaps in Bolivia: The effects of planting method and silvicultural treatments on long-term seedling survival and growth
(Elsevier BV, 2011) Rafael M. Navarro‐Cerrillo; Daniel M. Griffith; Maria José Ramírez‐Soria; William Pariona; Duncan Golicher; Guillermo Palacios-Rodríguez
Predicting hunter behavior of indigenous communities in the Ecuadorian Amazon: insights from a household production model
(Resilience Alliance, 2015) Enrique de la Montaña; Rocío del Pilar Moreno-Sánchez; Jorge Higinio Maldonado; Daniel M. Griffith
De la Montaña, E., R. del Pilar Moreno-Sánchez, J. H. Maldonado, and D. M. Griffith. 2015. Predicting hunter behavior of indigenous communities in the Ecuadorian Amazon: insights from a household production model. Ecology and Society 20(4):30.http://dx.doi.org/10.5751/ES-08032-200430
Wind dispersed tree species have greater maximum height
(Wiley, 2024) Ferry Slik; Bruno X. Pinho; Daniel M. Griffith; Edward L. Webb; A. S. Raghubanshi; Adriano Costa Quaresma; Aida Cuní‐Sanchez; Aisha Sultana; Alexandre F. Souza; Andreas Enßlin
Abstract Aim We test the hypothesis that wind dispersal is more common among emergent tree species given that being tall increases the likelihood of effective seed dispersal. Location Americas, Africa and the Asia‐Pacific. Time period 1970–2020. Major taxa studied Gymnosperms and Angiosperms. Methods We used a dataset consisting of tree inventories from 2821 plots across three biogeographic regions (Americas, Africa and Asia‐Pacific), including dry and wet forests, to determine the maximum height and dispersal strategy of 5314 tree species. A web search was used to determine whether species were wind‐dispersed. We compared differences in tree species maximum height between biogeographic regions and examined the relationship between species maximum height and wind dispersal using logistic regression. We also tested whether emergent tree species, that is species with at least one individual taller than the 95% height percentile in one or more plots, were disproportionally wind‐dispersed in dry and wet forests within each biogeographic region. Results Our dataset provides maximum height values for 5314 tree species, of which more than half (2914) had no record of this trait in existing global databases. We found that, on average, tree species in the Americas have lower maximum heights compared to those in Africa and the Asia Pacific. The probability of wind dispersal increased significantly with tree species maximum height and was significantly higher among emergent than non‐emergent tree species in both dry and wet forests in all three biogeographic regions. Main conclusion Wind dispersal is more prevalent in tall, emergent tree species than in non‐emergent species and may thus be an important factor in the evolution of tree species maximum height. By providing the most comprehensive dataset so far of tree species maximum height and wind dispersal strategies, this study paves the way for advancing our understanding of the eco‐evolutionary drivers of tree size.