Seven years of spider community succession in a Sphagnum farm

作者: Christoph Muster , Matthias Krebs , Hans Joosten

DOI: 10.1636/0161-8202-48.2.119

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摘要: Sphagnum farming is paludiculture aiming to produce biomass as a sustainable alternative peat in horticultural growing media. Here we focus on the habitat value of artificial sites for peatland species. We report results from seven years biodiversity monitoring (2011–2018) 14 ha farm north western Germany, using spiders and harvestmen indicator groups succession invertebrate communities. Species richness abundance more than doubled first two growth, but remained rather constant since then. Peatland generalists rapidly colonized site constitute some 30%–40% activity dominance second year. Stenotopic arrived later, their proportion increased significantly 2014 2017. Nevertheless, spider communities remain distinct (semi-)natural reference sites. Highly characteristic species pristine bogs are still lacking. conclude that novel community has assembled bears only moderate resemblance natural peatlands. Persisting high annual turnover rates terms composition structure (both > 30%) corroborate levels ongoing dynamics significance stochastic processes. The long-term trajectory remains vague.

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