Hans van der Wal

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Land-use change occurs nowhere more rapidly than in the tropics, where the imbalance between deforestation and forest regrowth has large consequences for the global carbon cycle. However, considerable uncertainty remains about the rate of biomass recovery in secondary forests, and how these rates are influenced by climate, landscape, and prior land use.(More)
Home Garden Agrobiodiversity Differentiates Along a Rural—Peri–Urban Gradient in Campeche, México. Agrobiodiversity in tropical home gardens is thought to decline with increasing urbanization, but information in this regard is scarce. We characterized livelihoods and compared attributes of home gardens of rural, semi–rural, and peri–urban families in(More)
The evaluation of species and structural diversity of home gardens strongly depends on the methods used. We distinguish the biosocial and the bionumerical method. The first is widely used and takes data of the whole population of trees of home gardens to calculate diversity. The bionumerical method calculates diversity from data of a fixed number of(More)
Economic Stratification Differentiates Home Gardens in the Maya Village of Pomuch, Mexico. In this paper, we analyze if economic stratification of peasant families in a Maya village in the Yucatán Peninsula of Mexico influences species composition and structure of home gardens. Our general hypothesis was that composition and structure reflect a higher(More)
Regrowth of tropical secondary forests following complete or nearly complete removal of forest vegetation actively stores carbon in aboveground biomass, partially counterbalancing carbon emissions from deforestation, forest degradation, burning of fossil fuels, and other anthropogenic sources. We estimate the age and spatial extent of lowland second-growth(More)
In the last three decades, self-governed robust institutions and design principles were emphasized for effective management of the commons including forests. However, little attention was given to institutional change and institutional performance. This paper addresses the relationship between institutional change and institutional performance under(More)
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