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Abstract

Water and solute fluxes in dry coastal dune grasslands: the effects of grazing and increased nitrogen deposition ten Harkel, M.J.; van Boxel, J.H.; Verstraten, J.M. Disclaimer/Complaints regulationsIf you believe that digital publication of certain material infringes any of your rights or (privacy) interests, please let the Library know, stating your reasons. In case of a legitimate complaint, the Library will make the material inaccessible and/or remove it from the website. Please Ask the Library: http://uba.uva.nl/en/contact, or a letter to: Library of the University of Amsterdam, Secretariat, Singel 425, 1012 WP Amsterdam, The Netherlands. You will be contacted as soon as possible. Key words: excluding grazing, fertilization, preferential flow, soil water fluxes spatial variability AbstractA five-year monitoring study has been carried out to examine the combined effects of grazing and atmospheric nitrogen deposition on water and solute fluxes in dry coastal dune grasslands. Two vegetation types were studied: (a) a short, species-rich stand on calcareous sand (foredune site) and (b) a short, species-poor stand on partly decalcified soil on calcareous sand (innerdune site). In each stand four experimental plots were created: (1) control, (2) fertilized with nitrogen, (3) excluded from grazing by rabbits and (4) combination of fertilization and exclusion of grazing by rabbits.

Interaction Between Plant Roots and Soil Water Flow in Response to Preferential Flow Paths in Northern China

“…When a large variability in the soil water flow is observed, it is important to consider preferential flow properties because of the interaction between plant roots and soils (Vannoppen et al, 2015). Many studies have investigated preferential flow in agricultural soils such as those of Willsboro, New York (Steenhuis et al, 1988) and northwestern Mississippi in the USA (Perkins et al, 2011); grassland soils in Ireland (Kramers et al, 2009) and the Meijendel dune area north of the Hague, the Netherlands (Harkel et al, 1998), whereas studies in stony soils located in rocky mountainous forest ecosystems are less frequent (Ni et al, 2015). Rock fragments, stones, and plant roots within soil profiles constitute a complicated macropores network, which exerts significant influences on soil water flow.…”

The Abundance of Pioneer Vegetation and Their Interaction with Endomycorrhiza at Different Land Qualities after Merapi Eruption

“…Zuo et al (2009) also reported that N content in desert area was positively correlated with quantity of vegetation or biomass which grew upon it. The low content of soil N in area with dense vegetation may be due to high absorption of N by plants, or by N utilization by microorganism (Harkel et al 1998).…”

Interactive effects of rabbit grazing and environmental factors on plant species-richness on dunes of Norderney

“…An expansion of tall and dense grasslands as well as shrublands was observed (Isermann and Cordes 1992), mainly because of atmospheric deposition of acidifiers and nutrients, especially nitrogen caused the change from lichen-rich to Carex arenaria dominated grasslands (Ten Harkel and Van der Meulen 1996;Remke et al 2009). Perennial grasses such as Ammophila arenaria, Avenella flexuosa, Calamagrostis epigejos and Carex arenaria have become dominant in dry dune grasslands since the 1970s (Ten Harkel et al 1998). The expansion of tall vegetation especially of shrubs has reduced the speciesrichness by shading (Isermann et al 2007).…”