Overseeding and rehabilitation of degraded upland grasslands after Arvicola terrestris outbreaks. - INRAE - Institut national de recherche pour l’agriculture, l’alimentation et l’environnement
Proceedings/Recueil Des Communications Grassland science in Europe Année : 2022

Overseeding and rehabilitation of degraded upland grasslands after Arvicola terrestris outbreaks.

Résumé

Outbreaks of grassland rodent (water vole: Arvicola terrestris) populations can cause dramatic grasslanddamage, impacting grassland structure and function, as well as the provision of ecosystem services. There is a pressing need to identify effective management techniques which promote grassland recovery after rodent disturbance, and clear guidelines on soil preparation and species mixtures are currently lacking. We have set up a field-scale experiment to examine the interactive effects of mechanical soil treatments and seed mixtures on an upland permanent grassland experiencing an A. terrestris outbreak. The ultimate objective is to determine which management practices satisfy two key criteria: (1) sufficient hay production to support a dairy herd during the winter; and (2) limited adverse effects on plant community recovery and longer-term grassland biodiversity. We test two types of soil preparation (with or without use of a disc cultivator) in combination with five overseeding treatments (no seed, annual species in monoculture, mixtures of annual species), and record biomass production, forage quantity and quality and soil properties over a two-year period. Aerial pictures and trapping are used to estimate rodent population density and dynamics. First results are presented and suggest effects of both seed mix and soil preparation treatments on hay quantity and quality.
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Dates et versions

hal-04229957 , version 1 (05-10-2023)

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Matthieu Bouchon, Frédérique Louault, Nathalie Vassal, Yves Michelin, Dominique Pomiès, et al.. Overseeding and rehabilitation of degraded upland grasslands after Arvicola terrestris outbreaks.. Grassland science in Europe, 27, Wageningen Academic Publishers, pp.358-360, 2022, Grassland at the heart of circular and sustainable food systems, 978-2-7380-1445-0 / EAN: 9782738014450. ⟨10.15454/1.5572318050509348E12)⟩. ⟨hal-04229957⟩
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