Search Results - "van der Eerden, L. J."

Evidence for changing the critical level for ammonia by Cape, J.N., van der Eerden, L.J., Sheppard, L.J., Leith, I.D., Sutton, M.A.

“…The current critical level for ammonia (CLE NH3) in Europe is set at 8 μg NH 3 m −3 as an annual average concentration. Recent evidence has shown specific…”
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Effects of Atmospheric Ammonia and Ammonium Sulphate on Vesicular- Arbuscular Mycorrhizal Colonization in Three Heathland Species by Heijne, B., Th. A. Dueck, van der Eerden, L. J., Heil, G. W.

“…Three heathland species, Arnica montana L., Viola canina L. and Nardus stricta L., were exposed to gaseous ammonia and artificial rain containing ammonium…”
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Effects of vapours of chlorpropham and ethofumesate on wild plant species by Franzaring, J, Kempenaar, C, van der Eerden, L.J.M

“…Non-target species responded to low concentrations of herbicide vapours in a fumigation study with foliar injury being the most responsive parameter. Effects…”
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Effects of ammonia, ammonium sulphate and sulphur dioxide on the frost sensitivity of Scots pine (Pinus sylvestris L.) by Dueck, T.A. (Instituut voor Plantenziektenkundig Onderzoek, Wageningen (Netherlands)), Dorel, F.G, Horst, R. ter, Eerden, L.J. van der

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Risk of damage to crops in the direct neighbourhood of ammonia sources by van der Eerden, L.J.M., de Visser, P.H.B., van Dijk, C.J.

“…In the Netherlands ammonia is emitted from several thousand sources (animal buildings, manured pastures, slurry storage facilities, etc.). Obviously, the…”
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Surveillance of hepatitis A in the Netherlands 1993-2002 by Van Der Eerden, L J M, Bosman, A, Van Duynhoven, Y T H P

“…To survey trends in data on hepatitis A using information from the notification system of the Municipal Medical and Health Services 1993-2002. Retrospective,…”
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Experimental calibration of Ellenberg's indicator value for nitrogen by Wamelink, G.W.W., van Dobben, H.F., van der Eerden, L.J.M.

“…Ellenberg's indicator values constitute a relative scale of optima per species with regard to several soil factors, mainly based on field experience. For the…”
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Nitrogen uptake in needles of Scots pine (Pinus sylvestris L.) when exposed to gaseous ammonia and ammonium fertilizer in the soil by Perez-Soba, M. (Instituut voor Planteziektenkundig Onderzoek DLO, Wageningen (Netherlands)), Eerden, L.J.M. van der

“…Young saplings of Pinus sylvestris L. were exposed to gaseous NH₃at 53 or 105 µg m³ for one year in open-top chambers. Saplings received ¹⁵N-labelled (NH₄)₂…”
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Nitrogen uptake in needles of Scot pine (Pinus sylvestris L.) when exposed to gaseous ammonia and ammonium fertilizer in the soil by PEREZ-SOBA, M, VAN DER EERDEN, L. J. M

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Short-Term Exposure to Atmospheric Ammonia Does not Affect Frost Hardening of Needles from Three- and Five-Year-Old Scots Pine Trees by Clement, Johannes M.A.M., Van Hasselt, Philip R., van der Eerden, Ludger J.M., Dueck, Thomas A.

“…The effect of atmospheric ammonia on frost hardening of needles from 3- and 5-year-old Scots pine trees was investigated. Trees were exposed to various…”
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Gaseous Ammonia Counteracts the Response of Scots Pine Needles to Elevated Atmospheric Carbon Dioxide by Pérez-Soba, Marta, Ludger J. M. van der Eerden, Stulen, Ineke, Pieter J. C. Kuiper

“…Four-year-old saplings of Scots pine (Pinus sylvestris L.) were exposed for 8 wk in controlled-environment chambers to charcoal-filtered air (FA), FA…”
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Physiological responses of Pinus sylvestris to atmospheric ammonia by Eerden L.J.M. van der, Perez Soba M.G.F.J

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Estimation of SO2 effects thresholds for heathland species by DUECK, TH. A, VAN DER EERDEN, L. J, BERDOWSKI, J. J. M

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Estimation of SO 2 Effect Thresholds for Heathland Species by Dueck, Th. A., Eerden, L. J. Van Der, Berdowski, J. J. M.

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Estimation of SO2 Effect Thresholds for Heathland Species by Th. A. Dueck, Van Der Eerden, L. J., Berdowski, J. J. M.

“…1. An ecotoxicological risk analysis was applied to data on the effects of SO2 on a heathland ecosystem to study the merits of this analysis for use in setting…”
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Estimation of SO sub(2) effect thresholds for heathland species by Dueck, T A, van der Eerden, LJ, Berdowski, JJM

“…An ecotoxicological risk analysis was applied to data on the effects of SO sub(2) on a heathland ecosystem to study the merits of this analysis for use in…”
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Effects of ammonia, ammonium sulphate and sulphur dioxide on the frost sensitivity of scots pine (Pinus sylvestris L.) by Dueck, ThA, Dorel, F G, Ter Horst, R, Van der Eerden, LJ

“…The deterioration of forest vitality has been at least partly attributed to air pollution. Especially NH sub(3), originating from intensive livestock farming…”
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