Staff Publications

Staff Publications

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    'Staff publications' is the digital repository of Wageningen University & Research

    'Staff publications' contains references to publications authored by Wageningen University staff from 1976 onward.

    Publications authored by the staff of the Research Institutes are available from 1995 onwards.

    Full text documents are added when available. The database is updated daily and currently holds about 240,000 items, of which 72,000 in open access.

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The value of manure - Manure as co-product in life cycle assessment
Leip, Adrian ; Ledgard, Stewart ; Uwizeye, Aimable ; Palhares, Julio C.P. ; Aller, M.F. ; Amon, Barbara ; Binder, Michael ; Cordovil, Claudia M.D.S. ; Camillis, Camillo De; Dong, Hongming ; Fusi, Alessandra ; Helin, Janne ; Hörtenhuber, Stefan ; Hristov, Alexander N. ; Koelsch, Richard ; Liu, Chunjiang ; Masso, Cargele ; Nkongolo, Nsalambi V. ; Patra, Amlan K. ; Redding, Matthew R. ; Rufino, Mariana C. ; Sakrabani, Ruben ; Thoma, Greg ; Vertès, Françoise ; Wang, Ying - \ 2019
Journal of Environmental Management 241 (2019). - ISSN 0301-4797 - p. 293 - 304.
Livestock production is important for food security, nutrition, and landscape maintenance, but it is associated with several environmental impacts. To assess the risk and benefits arising from livestock production, transparent and robust indicators are required, such as those offered by life cycle assessment. A central question in such approaches is how environmental burden is allocated to livestock products and to manure that is re-used for agricultural production. To incentivize sustainable use of manure, it should be considered as a co-product as long as it is not disposed of, or wasted, or applied in excess of crop nutrient needs, in which case it should be treated as a waste. This paper proposes a theoretical approach to define nutrient requirements based on nutrient response curves to economic and physical optima and a pragmatic approach based on crop nutrient yield adjusted for nutrient losses to atmosphere and water. Allocation of environmental burden to manure and other livestock products is then based on the nutrient value from manure for crop production using the price of fertilizer nutrients. We illustrate and discuss the proposed method with two case studies.
Livestock Environmental Assessment and Performance (LEAP) Partnership: : Building global methodological consensus for improved environmental management
Camillis, Camillo De; Opio, Carolyn ; Merènyi1, Màtè ; Uwizeye, U.A. ; Arce Diaz, Eduardo ; Brown, Douglas ; Clark, Harry ; Castillo-Fernandez, Lucia ; Athayde, Alexandra de; Mooij de, Richard ; Schryver, An de; Rosa, Primiano de; Desai, Lalji ; Gerber, P.J. - \ 2016
In: Book of Abstracts of the 10th International Conference on Life Cycle Assessment of Food 2016. -
eco-efficiency; consensus building; GHG emissions; water footprinting; nutrients modelling; carbon stock
Research is evolving fast in environmental assessment. Accordingly, Life Cycle Assessment studies often deliver
contradictory messages when it comes to agriculture and livestock supply chains. High is hence the risk to mislead policy
making, and to create unjustified market distortions. While science continues to evolve, FAO, governments, private sector,
non-government organizations and civil society organizations engaged in the Livestock Environmental Assessment and
Performance (LEAP) Partnership to build global methodological consensus for sound environmental assessments of
livestock supply chains. LEAP guidelines are developed by Technical Advisory Groups composed of scholars and technical
experts from a wide array of regions. LEAP guidelines are designed to support the environmental benchmarking of livestock
supply chains without focusing on a specific production practice. This paper provides an overview of the major
achievements of the LEAP Partnership phase 1 (2012-2015) as well as presents the technical challenges that LEAP will
tackle in its phase 2 until 2018. Special emphasis is on the ongoing technical activities on water footprinting, modelling of
nitrogen and phosphorus flows, soil carbon stock changes, and road testing of LEAP1 guidelines.
Consensus building on the development of a stress-based indicator for LCA-based impact assessment of water consumption : outcome of the expert workshops
Boulay, Anne Marie ; Bare, Jane ; Camillis, Camillo De; Döll, Petra ; Gassert, Francis ; Gerten, Dieter ; Humbert, Sebastien ; Inaba, Atsushi ; Itsubo, Norihiro ; Lemoine, Yann ; Margni, Manuele ; Motoshita, Masaharu ; Núñez, Montse ; Pastor, A.V. ; Ridoutt, Brad ; Schencker, Urs ; Shirakawa, Naoki ; Vionnet, Samuel ; Worbe, Sebastien ; Yoshikawa, Sayaka ; Pfister, Stephan - \ 2015
The International Journal of Life Cycle Assessment 20 (2015)5. - ISSN 0948-3349 - p. 577 - 583.
Consensus-based - Water consumption - WULCA

Purpose: The WULCA group, active since 2007 on Water Use in LCA, commenced the development of consensus-based indicators in January 2014. This activity is planned to last 2 years and covers human health, ecosystem quality, and a stress-based indicator. This latter encompasses potential deprivation of both ecosystem and human, hence aiming to represent potential impacts more comprehensively than any other available LCA-oriented method assessing the “water scarcity footprint” (ISO 2014). Methods: A series of three expert workshops, including non-LCA experts from hydrology, eco-hydrology, and water supply science, was organized specifically on the topic of this generic midpoint indicator. They were held in Zurich on 10th September, in San Francisco on 5th October and in Tsukuba on 27th October 2014. In total 49 experts attended. The specific objectives of the workshops were twofold. First, it was to present the identified options of the stress-based indicator narrowed down by the active members of WULCA during the first 8 months of the project and to receive comments on the relevance, usefulness, acceptability, and focus of the selected indicator. Second, the workshop covered different challenges in the modeling of the indicator and presented the experts with background information and specific questions. This paper summarizes the discussions and outcome of these workshops. Where no agreement was reached, the working group of active members is considering all inputs received and continues the work. Results and discussion: The discussion covered first the question to be answered by such indicator, resulting on an agreement on the evaluation of the potential to deprive other users of water, independently of who the user is (i.e., human or ecosystems). Special attention was given to the special case of arid areas as well as the definition of environmental water requirements. Specific modeling challenges were then addressed: definition and quantification of human and ecosystem water demand, consideration of green water and terrestrial ecosystems, sources of data, distinction of groundwater and surface water, and temporal and geographical resolution. Conclusions: The input, decisions, and points of discussion were compiled and brought back within the group of active members. The group is using the recommendations and works further on the harmonization of the points of disagreement. It is expected that a selection of indicators representing different ways to address the most important issues will be produced and tested in spring 2015. The analysis of the result should lead to a provisional recommendation by summer 2015.

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