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Featured researches published by A. Frumau.


Environmental Pollution | 2012

Assessment of N and P status at the landscape scale using environmental models and measurements.

M.P.W. Sonneveld; J.A. de Vos; J. Kros; M. Knotters; A. Frumau; Albert Bleeker; W. de Vries

We assessed the compliance of a Dutch landscape, dominated by dairy farming, with environmental quality standards using a combination of model calculations and measurements. The total ammonia emission of 2.4 kton NH(3) yr(-1) does not exceed the environmental quality standard (2.6 kton NH(3) yr(-1)). Nevertheless, the total N deposition (on average 24.4 kg N ha(-1) yr(-1)) is such that critical N loads are exceeded at 53% of the nature areas. The deposited N mainly results from non-agricultural sources and agricultural sources outside the area (72%). The calculated average NO(3)(-) concentration in the upper groundwater does not exceed the 50 mg l(-1) threshold. Calculated annual average N-total and P-total concentrations in discharge water are relatively high but these cannot be directly compared with thresholds for surface water. The results suggest that compliance monitoring at the landscape scale needs to include source indicators and cannot be based on state indicators alone.


Agriculture, Ecosystems & Environment | 2009

Biosphere–atmosphere exchange of reactive nitrogen and greenhouse gases at the NitroEurope core flux measurement sites: Measurement strategy and first data sets

U. Skiba; Julia Drewer; Y.S. Tang; N. van Dijk; Carole Helfter; E. Nemitz; D. Famulari; J.N. Cape; S.K. Jones; Marsailidh Twigg; Mari Pihlatie; Timo Vesala; Klaus Steenberg Larsen; Mette S. Carter; Per Ambus; Andreas Ibrom; C. Beier; A. Hensen; A. Frumau; J.W. Erisman; Nicolas Brüggemann; Rainer Gasche; Klaus Butterbach-Bahl; Albrecht Neftel; C. Spirig; László Horváth; A. Freibauer; Pierre Cellier; Patricia Laville; Benjamin Loubet


Biogeosciences | 2012

Farm nitrogen balances in six European landscapes as an indicator for nitrogen losses and basis for improved management

Tommy Dalgaard; J. Bienkowski; Albert Bleeker; U. Dragosits; J.L. Drouet; Patrick Durand; A. Frumau; Nick Hutchings; A. Kedziora; V. Magliulo; J.E. Olesen; Mark R. Theobald; O. Maury; N. Akkal; Pierre Cellier


Nitrogen & Global Change. Key findings, future challenges | 2011

Farm nitrogen balances in European landscapes

Tommy Dalgaard; Patrick Durand; U. Dragosits; Nick Hutchings; A. Kedziora; A. Frumau; Albert Bleeker; E. Magliulo; J.E. Olesen; Mark R. Theobald; Jean-Louis Drouet; Pierre Cellier


V-focus | 2018

Effecten van het verzurings- en ammoniakbeleid

H. Kros; W. de Vries; A. van Pul; E. Wattel-Koekkoek; R.J. Wichink Kruit; K. van Herk; A. Frumau


V-focus | 2018

Concentraties en depositie : Trends in ammoniak en ammonium

A. van Pul; R.J. Wichink Kruit; A. Frumau; J. Kros; W. de Vries


Proceedings 16 th. Nitrogen Workshop | 2009

Integrating nitrogen interactions at the farm and landscape scales to assess the impact of management scenarios

Jean-Louis Drouet; Pierre Cellier; Sylvia Duretz; Olivier Maury; Patrick Durand; Christophe Flechard; Jordy Salmon-Monviola; Mark R. Theobald; U. Dragosits; Christine F. Braban; Nick Hutchings; J.E. Olesen; Tommy Dalgaard; Kirsten Schelde; Lutz Breuer; P. Kraft; K.B. Vaché; Klaus Butterbach-Bahl; Albert Bleeker; A. Frumau; J. Bienkowski; A. Kedziora; E. Magliulo; P. Magliulo; Mark A. Sutton


Milieu | 2008

Zelfsturing kan niet zonder doelen en monitoring

W. de Vries; H. Kros; B. de Vos; M. Knotters; J. Roelsma; Albert Bleeker; A. Hensen; A. Frumau; M.P.W. Sonneveld

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Albert Bleeker

Energy Research Centre of the Netherlands

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W. de Vries

Wageningen University and Research Centre

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Patrick Durand

Institut national de la recherche agronomique

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Mark R. Theobald

Technical University of Madrid

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A. Hensen

Energy Research Centre of the Netherlands

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H. Kros

Wageningen University and Research Centre

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M. Knotters

Wageningen University and Research Centre

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