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Your search keyword '"Hughes, Harold J."' showing total 2 results
Start Over Author "Hughes, Harold J." Publisher nature publishing group
2 results on '"Hughes, Harold J."'

1. CORRIGENDUM: Landscape cultivation alters δ30Si signature in terrestrial ecosystems

Author

Vandevenne, Floor I., Delvaux, Claire, Hughes, Harold J., André, Luc, Ronchi, Benedicta, Clymans, Wim, Barão, Lúcia, Cornelis, Jean-Thomas, Govers, Gerard, Meire, Patrick, and Struyf, Eric

Subjects
Silicon, Soil, Isotopes, Water, Agriculture, Plants, Corrigenda, Weather, Ecosystem
Abstract

Despite increasing recognition of the relevance of biological cycling for Si cycling in ecosystems and for Si export from soils to fluvial systems, effects of human cultivation on the Si cycle are still relatively understudied. Here we examined stable Si isotope (δ(30)Si) signatures in soil water samples across a temperate land use gradient. We show that - independent of geological and climatological variation - there is a depletion in light isotopes in soil water of intensive croplands and managed grasslands relative to native forests. Furthermore, our data suggest a divergence in δ(30)Si signatures along the land use change gradient, highlighting the imprint of vegetation cover, human cultivation and intensity of disturbance on δ(30)Si patterns, on top of more conventionally acknowledged drivers (i.e. mineralogy and climate).

Published
2015

2. Landscape cultivation alters δ³⁰Si signature in terrestrial ecosystems.

Author

Vandevenne FI, Delvaux C, Hughes HJ, André L, Ronchi B, Clymans W, Barão L, Govers G, Meire P, Struyf E, and Cornelis JT

Subjects
Isotopes, Plants metabolism, Soil chemistry, Water, Weather, Agriculture methods, Ecosystem, Silicon metabolism
Abstract

Despite increasing recognition of the relevance of biological cycling for Si cycling in ecosystems and for Si export from soils to fluvial systems, effects of human cultivation on the Si cycle are still relatively understudied. Here we examined stable Si isotope (δ(30)Si) signatures in soil water samples across a temperate land use gradient. We show that - independent of geological and climatological variation - there is a depletion in light isotopes in soil water of intensive croplands and managed grasslands relative to native forests. Furthermore, our data suggest a divergence in δ(30)Si signatures along the land use change gradient, highlighting the imprint of vegetation cover, human cultivation and intensity of disturbance on δ(30)Si patterns, on top of more conventionally acknowledged drivers (i.e. mineralogy and climate).

Published
2015
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