Staff Publications

Staff Publications

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    'Staff publications' is the digital repository of Wageningen University & Research

    'Staff publications' contains references to publications authored by Wageningen University staff from 1976 onward.

    Publications authored by the staff of the Research Institutes are available from 1995 onwards.

    Full text documents are added when available. The database is updated daily and currently holds about 240,000 items, of which 72,000 in open access.

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Record number 437057
Title Limits of windthrow-driven hillslope sediment flux due to varying storm frequency and intensity
Author(s) Constatine, J.A.; Schelhaas, M.J.; Gabet, E.; Mudd, S.M.
Source Geomorphology 175-176 (2012). - ISSN 0169-555X - p. 66 - 73.
DOI https://doi.org/10.1016/j.geomorph.2012.06.022
Department(s) Alterra - Vegetation, forest and landscape ecology
CE - Forest Ecosystems
Publication type Refereed Article in a scientific journal
Publication year 2012
Keyword(s) process-based model - forest dynamics - douglas-fir - catastrophic windthrow - north-carolina - root throw - wind-throw - disturbance - transport - trees
Abstract The uprooting and toppling of trees during storms transports soil, exhumes bedrock, and thus influences the evolution of hillslopes. Given predicted increased storminess due to future climate change, we adapt a forest-gap model (ForGEM) to explore windthrow-driven sediment transport in a Douglas fir forest under increasingly severe wind regimes in order to better assess potential future impacts on soil erosion. Larger trees are more sensitive to wind loading and are therefore preferentially toppled as storm frequency and intensity increase. Because larger trees have larger root-plate volumes and can move large volumes of sediment, increased wind velocities lead to an increase in sediment flux. With increasingly stormier conditions, however, the proportion of large trees dwindles. The net effect of these two countervailing trends is that sediment transport increases as average annual rates of windthrow approach eight trees per hectare, but begins to decline thereafter. Our results highlight the complex relationship between climate and sediment transport, particularly when it is mediated by the biota.
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