Leaf litter degradation in highly turbid transitional waters: preliminary results from litter-bag experiments in the Gironde Estuary - Archive ouverte HAL Access content directly
Journal Articles Geodinamica Acta Year : 2015

Leaf litter degradation in highly turbid transitional waters: preliminary results from litter-bag experiments in the Gironde Estuary

Abstract

The rates of decomposition of oak (Quercus robur) leaves have been examined using litter bags in a very high turbidity macrotidal estuary, the Gironde Estuary (S.W. France). The first experiments show a marked decrease in the decomposition rate of oak leaves at the water-sediment interface (mud-contact: anoxic conditions, reduced physical fragmentation) in comparison to the water column. The results point out the impact of hydrodynamic conditions on leaf litter degradation in such fluvio-estuarine systems. Regarding the aquatic-terrestrial linkage, our observations suggest direct changes in leaf decomposition kinetics and then, a potential delay on the recycling and transport processes of coarse particulate organic matter, especially in a context of modification of the natural water flow, due to global and land use changes.
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hal-01187415 , version 1 (26-08-2015)

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Ana Fuentes-Cid, Eric Chauvet, Henri Etcheber, Eric De-Oliveira, Aldo Sottolichio, et al.. Leaf litter degradation in highly turbid transitional waters: preliminary results from litter-bag experiments in the Gironde Estuary. Geodinamica Acta, 2015, vol. 27 (n° 1), pp. 60-66. ⟨10.1080/09853111.2013.877233⟩. ⟨hal-01187415⟩
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