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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Climate change opens new frontiers for marine species in the Arctic: Current trends and future invasion risks
Chan, Farrah T. ; Stanislawczyk, Keara ; Sneekes, A.C. ; Dvoretsky, Alexander ; Gollasch, Stephan ; Minchin, Dan ; David, Matej ; Jelmert, Anders ; Albretsen, Jon ; Bailey, Sarah A. - \ 2018
Global Change Biology (2018). - ISSN 1354-1013 - 14 p.
alien species - aquaculture - climate warming - fisheries - invasion pathways - invasive species - knowledge gap - nonindigenous species - shipping - vessels
Climate change and increased anthropogenic activities are expected to elevate the potential of introducing nonindigenous species (NIS) into the Arctic. Yet, the knowledge base needed to identify gaps and priorities for NIS research and management is limited. Here, we reviewed primary introduction events to each ecoregion of the marine Arctic realm to identify temporal and spatial patterns, likely source regions of NIS, and the putative introduction pathways. We included 54 introduction events representing 34 unique NIS. The rate of NIS discovery ranged from zero to four species per year between 1960 and 2015. The Iceland Shelf had the greatest number of introduction events (n = 14), followed by the Barents Sea (n = 11), and the Norwegian Sea (n = 11). Sixteen of the 54 introduction records had no known origins. The majority of those with known source regions were attributed to the Northeast Atlantic and the Northwest
Pacific, 19 and 14 records, respectively. Some introduction events were attributed
to multiple possible pathways. For these introductions, vessels transferred the greatest number of aquatic NIS (39%) to the Arctic, followed by natural spread (30%) and aquaculture activities (25%). Similar trends were found for introductions attributed to a single pathway. The phyla Arthropoda and Ochrophyta had the highest number of recorded introduction events, with 19 and 12 records, respectively. Recommendations including vector management, horizon scanning, early detection, rapid response, and a pan‐Arctic biodiversity inventory are considered in this paper. Our study provides a comprehensive record of primary introductions of NIS for marine environments in the
circumpolar Arctic and identifies knowledge gaps and opportunities for NIS research and management. Ecosystems worldwide will face dramatic changes in the coming decades due to global change. Our findings contribute to the knowledge base needed to address two aspects of global change—invasive species and climate change.
Opposing patterns of intraspecific and interspecific differentiation in sex chromosomes and autosomes
Moran, Peter A. ; Pascoal, Sonia ; Cezard, Timothee ; Risse, Judith E. ; Ritchie, Michael G. ; Bailey, Nathan W. - \ 2018
Molecular Ecology 27 (2018)19. - ISSN 0962-1083 - p. 3905 - 3924.
faster-X effect - hybridization - population genomics - RAD sequencing - sex chromosomes - Teleogryllus

Linking intraspecific and interspecific divergence is an important challenge in speciation research. X chromosomes are expected to evolve faster than autosomes and disproportionately contribute to reproductive barriers, and comparing genetic variation on X and autosomal markers within and between species can elucidate evolutionary processes that shape genome variation. We performed RADseq on a 16 population transect of two closely related Australian cricket species, Teleogryllus commodus and T. oceanicus, covering allopatry and sympatry. This classic study system for sexual selection provides a rare exception to Haldane's rule, as hybrid females are sterile. We found no evidence of recent introgression, despite the fact that the species coexist in overlapping habitats in the wild and interbreed in the laboratory. Putative X-linked loci showed greater differentiation between species compared with autosomal loci. However, population differentiation within species was unexpectedly lower on X-linked markers than autosomal markers, and relative X-to-autosomal genetic diversity was inflated above neutral expectations. Populations of both species showed genomic signatures of recent population expansions, but these were not strong enough to account for the inflated X/A diversity. Instead, most of the excess polymorphism on the X could better be explained by sex-biased processes that increase the relative effective population size of the X, such as interspecific variation in the strength of sexual selection among males. Taken together, the opposing patterns of diversity and differentiation at X versus autosomal loci implicate a greater role for sex-linked genes in maintaining species boundaries in this system.

Stabilising cooperation through pragmatic tolerance : the case of the Parties to the Nauru Agreement (PNA) tuna fishery
Yeeting, Agnes David ; Weikard, Hans Peter ; Bailey, Megan ; Ram-Bidesi, Vina ; Bush, S.R. - \ 2018
Regional Environmental Change 18 (2018)3. - ISSN 1436-3798 - p. 885 - 897.
Coalition stability - Compliance - Economic instruments - Fisheries regionalism - International fisheries agreements - RFMOs - Tuna management
Purse seine fishing of skipjack tuna in the Western and Central Pacific Ocean (WCPO) raises concern over increasing impacts on yellowfin and bigeye tuna by-catch. To address sustainability concerns, the Parties to the Nauru Agreement (PNA) adopted the vessel day scheme (VDS) for the management of purse seine fishing in the WCPO. The VDS has the potential to improve economic benefits for PNA members and to contribute to sustainability of the tuna stocks, and since 2012, has become an important mechanism to regulate fishing access rights in PNA waters. Despite this, monitoring and enforcement remains weak leading to violations of the agreement. Using a game theoretic framework, this paper examines the effectiveness of the VDS and its implications for fisheries regionalism. We examine the payoffs of member countries of the Nauru Agreement under full compliance and payoffs under the currently observed partial compliance. Our findings indicate that member states’ partial compliance with VDS rules plays a role in stabilising the agreement. Requiring full compliance, on the other hand, may encompass strong incentives for PNA members to deviate from the VDS since third parties offer attractive benefits in return for privileged access to fishing grounds. However, pragmatic tolerance of deviations from full VDS compliance seems to play a facilitative role in promoting cooperation and fisheries regionalism.
Cultured meat, better than beans?
Weele, C.N. van der - \ 2017
In: Sustainable Food Futures / Duncan, Jessica, Bailey, Megan, Routledge (Routledge Studies in Food, Society and the Environment ) - ISBN 9781138207004 - p. 163 - 174.
Knowing how to bring food to the market: appreciating the contribution of intermediary traders to the future of food availability in Sub-Saharan Africa
Schoonhoven, M.H.A. ; Mangnus, E.P.M. ; Vellema, S. - \ 2017
In: Sustainable Food Futures – Multidisciplinary Solutions / Duncan, Jessica, Bailey, Megan, Routledge - ISBN 9781138206168 - p. 119 - 132.
New tuna regimes
Yeeting, Agnes David - \ 2017
University. Promotor(en): Simon Bush, co-promotor(en): Hans-Peter Weikard; M. Bailey. - Wageningen : Wageningen University - ISBN 9789463438308 - 154
fisheries - marine fisheries - tuna - sustainability - environmental policy - governance - economic policy - pacific ocean - environmental economics - visserij - zeevisserij - tonijn - duurzaamheid (sustainability) - milieubeleid - economisch beleid - grote oceaan - milieueconomie
governing sustainability and equity in the Western and Central Pacific Ocean
Certify sustainable retailers?
Bush, S.R. - \ 2017
In: Sustainable Food Futures / Duncan, Jessica, Bailey, Megan, Earthscan/Routledge (Routledge Studies in Food, Society and the Environment ) - ISBN 9781315463117 - p. 133 - 144.
Third-party eco-certification has received considerable attention by academics and practitioners alike as a new mode of sustainability governance. But there is growing evidence that certification faces a number of limits when applied to producers in developing countries, in particular the weak capabilities of small-holder producers to comply with the standards set out by these certification schemes. When these producers make up between 70% and 80% of the estimated 117 million fish farmers worldwide (Bondad-Reantaso & Subasinghe, 2013; Valderrma, Hishamunda, & Zhou, 2010), we can question how certification can meet its own goals of transforming industries towards sustainability. This chapter extends current debates over the capability of producers to comply with standards by arguing for an alternative certification arrangement. Instead of continuing with the current model of certification that places the ‘burden of proof’ for sustainability on producers, I propose a new form of retail-targeted certification that reverses this burden of proof. Under such a model, it is not small-holders who have to demonstrate sustainability, but instead the buyers and retailers who receive a disproportionate benefit from the marketing and trade of their fish. A retailer certification scheme would reverse this burden of proof by giving recognition and market reward to retailers adopting ‘developmental’ forms of value-chain coordination that foster inclusive and effective support for improving the production practices of small-holders. Such a model might be relevant for any globally traded commodity sector involving small-holder producers in need of (but unable to independently make) improvements towards sustainability.
Immunomodulating effects of probiotics for microbiota modulation, gut health and disease resistance in pigs
Roselli, Marianna ; Pieper, Robert ; Rogel-Gaillard, Claire ; Vries, Hugo de; Bailey, Mick ; Smidt, Hauke ; Lauridsen, Charlotte - \ 2017
Animal Feed Science and Technology 233 (2017). - ISSN 0377-8401 - p. 104 - 119.
Gut health - Gut microbiota - Immunomodulation - Pig diarrhea prevention - Prebiotics - Probiotics
Probiotics are live microorganisms that can confer a health benefit on the host, and amongst various mechanisms probiotics are believed to exert their effects by production of antimicrobial substances, competition with pathogens for adhesion sites and nutrients, enhancement of mucosal barrier integrity and immune modulation. Through these activities probiotics can support three core benefits for the host: supporting a healthy gut microbiota, a healthy digestive tract and a healthy immune system. More recently, the concept of combining probiotics and prebiotics, i.e. synbiotics, for the beneficial effect on gut health of pigs has attracted major interest, and examples of probiotic and prebiotic benefits for pigs are pathogen inhibition and immunomodulation. Yet, it remains to be defined in pigs, what exactly is a healthy gut. Because of the high level of variability in growth and feed conversion between individual pigs in commercial production systems, measuring the impact of probiotics on gut health defined by improvements in overall productivity requires large experiments. For this reason, many studies have concentrated on measuring the effects of the feed additives on proxies of gut health including many immunological measures, in more controlled experiments. With the major focus of studying the balance between gut microbiology, immunology and physiology, and the potential for prevention of intestinal disorders in pigs, we therefore performed a literature review of the immunomodulatory effects of probiotics, either alone or in combination with prebiotics, based on in vivo, in vitro and ex vivo porcine experiments. A consistent number of studies showed the potential capacity in terms of immunomodulatory activities of these feed additives in pigs, but contrasting results can also be obtained from the literature. Reasons for this are not clear but could be related to differences with respect to the probiotic strain used, experimental settings, diets, initial microbiota colonization, administration route, time and frequency of administration of the probiotic strain and sampling for analysis. Hence, the use of proxy measurements of enteric health based on observable immunological parameters presents significant problems at the moment, and cannot be considered robust, reliable predictors of the probiotic activity in vivo, in relation to pig gut health. In conclusion, more detailed understanding of how to select and interpret these proxy measurements will be necessary in order to allow a more rational prediction of the effect of specific probiotic interventions in the future.
Sustainable food futures : multidisciplinary solutions
Duncan, J.A.B. ; Bailey, M.L. - \ 2017
In: Sustainable Food Futures / Duncan, Jessica, Bailey, Megan, Oxon : Routledge - ISBN 9781138206168 - p. 1 - 14.
Caution: road work ahead
Duncan, J.A.B. ; Bailey, M.L. - \ 2017
In: Sustainable Food Futures / Duncan, Jessica, Bailey, Megan, Oxon : Routledge - ISBN 9781138206168 - p. 203 - 214.
From pirate islands to communities of hope : reflections on the circular economy of food systems
Duncan, J.A.B. ; Pascucci, S. - \ 2017
In: Sustainable Food Futures: Multidisciplinary solutions / Duncan, Jessica, Bailey, Megan, Oxon : Routledge - ISBN 9781138206168 - p. 186 - 200.
Sustainable Food Futures : Multidisciplinary solutions
Duncan, J.A.B. ; Bailey, M.L. - \ 2017
Oxon : Routledge (Routledge Studies in Food, Society and the Environment ) - ISBN 9781138206168 - 220 p.
Private governance of ocean resources
Groeneveld, R.A. ; Bush, S.R. ; Bailey, M.L. - \ 2017
In: Handbook on the Economics and Management of Sustainable Oceans / Nunes, Paulo A.L.D., Svensson, Lisa E., Markandya, Anil, Edward Elgar Publishing - ISBN 9781786430717 - p. 416 - 428.
The United Nations (UN) post-2015 development agenda (United Nations 2015) calls for the establishment of a global partnership for sustainable development, ‘bringing together Governments, civil society, the private sector, the United Nations system and other actors and mobilizing all available resources’ (Art. 39). The agenda thereby explicitly acknowledges that in addition to governments, private companies and civil society have a pivotal role to play in attaining the new Sustainable Development Goals (SDGs). The natural resource economics literature has traditionally applied a strict dichotomy between public actors (that is, governments) and private institutions, notably markets: markets take care of the allocation of private goods and services, while governments uphold the legal framework within which markets operate and correct market failures such as public goods, monopolies, and limited excludability of natural resources (see, for example, Perman et al. 2011; Tietenberg and Lewis 2012). The task of managing ocean resources has thus in recent history fallen squarely on the shoulders of the nation state. However, we have seen for complex systems, such as fisheries and marine ecosystems, that this dichotomy does not always hold (Ostrom 2010). Rather, the work of Ostrom and others (for example, Folke et al. 2005; Galaz et al. 2012) points to what is referred to as polycentric governance, where private and community institutional structures, sometimes integrated with and sometimes separate from the state, are offering new solutions to global governance challenges. These developments are blurring the strict separation of responsibilities between states, companies and, to an increasing extent, civil society.
Soil networks become more connected and take up more carbon as nature restoration progresses
Morriën, W.E. ; Hannula, S.E. ; Snoek, L.B. ; Helmsing, N.R. ; Zweers, Hans ; Hollander, M. de; Soto, Raquel Luján ; Bouffaud, Marie Lara ; Buée, M. ; Dimmers, W.J. ; Duyts, Henk ; Geisen, Stefan ; Girlanda, Mariangela ; Griffiths, R.I. ; Jorgensen, H.B. ; Jensen, J. ; Plassart, P. ; Redecker, Dirk ; Schmelz, R.M. ; Schmidt, Olaf ; Thomson, Bruce C. ; Tisserant, Emilie ; Uroz, Stephane ; Winding, Anne ; Bailey, M.J. ; Bonkowski, M. ; Faber, J.H. ; Martin, F. ; Lemanceau, Philippe ; Boer, W. de; Veen, J.A. van; Putten, W.H. van der - \ 2017
Nature Communications 8 (2017). - ISSN 2041-1723 - 10 p.
Soil organisms have an important role in aboveground community dynamics and ecosystem functioning in terrestrial ecosystems. However, most studies have considered soil biota as a black box or focussed on specific groups, whereas little is known about entire soil networks. Here we show that during the course of nature restoration on abandoned arable land a compositional shift in soil biota, preceded by tightening of the belowground networks, corresponds with enhanced efficiency of carbon uptake. In mid- and long-term abandoned field soil, carbon uptake by fungi increases without an increase in fungal biomass or shift in bacterial-to-fungal ratio. The implication of our findings is that during nature restoration the efficiency of nutrient cycling and carbon uptake can increase by a shift in fungal composition and/or fungal activity. Therefore, we propose that relationships between soil food web structure and carbon cycling in soils need to be reconsidered.
Private provision of public information in tuna fisheries
Bush, Simon R. ; Bailey, Megan ; Zwieten, Paul van; Kochen, Momo ; Wiryawan, Budy ; Doddema, Mandy ; Mangunsong, Stephani C. - \ 2017
Marine Policy 77 (2017). - ISSN 0308-597X - p. 130 - 135.
Private enumeration of landings data and traceability is an emerging phenomena in developing world tuna fisheries. The general goal of these systems is to facilitate compliance with mandatory market requirements such as the European Union’s Illegal, Unreported and Unregulated fisheries regulation, as well as support aspirations for voluntary requirements such as the Marine Stewardship Council. The long-term success of these systems appears to be dependent on their ability to complement and extend government data and information systems. Developing and maintaining the credibility of these voluntary private enumeration and traceability systems requires strong market incentives as well as strong state support and assurance. If this credibility can be maintained private fisheries information systems may provide a promising basis for innovative stock assessment and management approaches relevant for complex developing world fisheries such as tuna.
Sustainable grassland production by increased functional group diversification
Golinski, P. ; Bailey, J. ; Crespo, David Gomes ; Pol, A. van den; Lind, V. ; Mosquera-Losada, M.R. ; O'Donovan, Michael ; Peeters, A. ; Porqueddu, C. ; Reheul, D. - \ 2016
EIP-AGRI (EIP-AGRI Focus Group Permanent Grassland ) - 7 p.




Selecting cost effective and policy-relevant biological indicators for European monitoring of soil biodiversity and ecosystem function
Griffiths, B.S. ; Römbke, J. ; Schmelz, R.M. ; Scheffczyk, A. ; Faber, J.H. ; Bloem, J. ; Peres, G. ; Cluzeau, D. ; Chabbi, A. ; Suhadolc, M. ; Sousa, J.P. ; Silva, P.M. da; Carvalho, F. ; Mendes, S. ; Morais, P. ; Francisco, R. ; Pereira, C. ; Bonkowski, M. ; Geisen, Stefan ; Bardgetti, R.D. ; Vries, F.T. De; Bolger, T. ; Dirilgen, T. ; Schmidt, O. ; Winding, Anne ; Hendriksen, Nicolien ; Johansen, A. ; Philippot, L. ; Plassart, P. ; Bru, D. ; Thomson, B.M. ; Griffiths, R.I. ; Bailey, Megan ; Keith, A. ; Rutgers, M. ; Mulder, Christian ; Hannula, S.E. ; Creamer, Rachel ; Stone, D. - \ 2016
Ecological Indicators 69 (2016). - ISSN 1470-160X - p. 213 - 223.
Soils provide many ecosystem services that are ultimately dependent on the local diversity and belowground abundance of organisms. Soil biodiversity is affected negatively by many threats and there is a perceived policy requirement for the effective biological monitoring of soils at the European level. The aim of this study was to evaluate and recommend policy relevant, cost-effective soil biological indicators for biodiversity and ecosystem function across Europe. A total of 18 potential indicators were selected using a logical-sieve based approach. This paper considers the use of indicators from the ‘top down’ (i.e. concerned with the process of indicator selection), rather than from the ‘bottom up’ detail of how individual indicators perform at specific sites and with specific treatments. The indicators assessed a range of microbial, faunal and functional attributes, newer nucleic acids based techniques, morphological approaches and process based measurements. They were tested at 6 European experimental sites already in operation and chosen according to land-use, climatic zone and differences in land management intensity. These were 4 arable sites, one each in Atlantic, Continental, Mediterranean and Pannonian climate zones, and 2 grassland sites, one each in Atlantic and Continental zones. At each site we sampled three replicated plots of contrasting management intensity and, while the treatments varied from site to site, their disturbance effects were quantified in terms of land use intensity. The field sampling and laboratory analysis were standardised through a combination of ISO protocols, or standard operating procedures if the former were not available. Sites were sampled twice, in autumn 2012 and spring or autumn 2013, with relative costs of the different indicators being determined each time. A breakdown of the cost effectiveness of the indicators showed the expected trade-off between effort required in the field and effort required in the laboratory. All the indicators were able to differentiate between the sites but, as no single indicator was sensitive to all the differences in land use intensity, we suggest that an indicator programme should be based upon a suite of different indicators. For monitoring under the European climatic zones and land uses of this study, indicators for ecosystem functions related to the services of water regulation, C-sequestration and nutrient provision would include a minimum suite of: earthworms; functional genes; and bait lamina. For effective monitoring of biodiversity all taxonomic groups would need to be addressed.
Report on Economic Models Calibrated to Case-Study Landscapes
Brady, M. ; Sahlin, Ullrika ; Clough, Y. ; Bailey, A. ; Cong, R.G. ; Elek, Zoltan ; Hedlund, K. ; Koellner, T. ; Marini, L. ; Olsson, O. ; Poppenborg, Patrick ; Redlich, Sarah ; Switek, Stanislaw ; Takacs, Viki ; Gils, S.H. van; Smith, H.G. - \ 2016
FP7 Project Liberation
Solutions for a Food Secure World
Duncan, J.A.B. ; Bailey, M. - \ 2016
Solutions 7 (2016)4. - ISSN 2154-0896 - p. 1 - 3.
Farmland biodiversity and agriculture management on 237 farms in 13 European and two African regions
Lüscher, G. ; Ammari, Y. ; Andriets, A. ; Angelova, Siyka ; Arndorfer, Michaela ; Bailey, D. ; Balázs, Katalin ; Bogers, M.M.B. ; Lange, H.J. de; Kats, R.J.M. van - \ 2016
Ecology 97 (2016)6. - ISSN 0012-9658 - p. 1625 - 1625.
Farmland is a major land cover type in Europe and Africa and provides habitat for numerous species. The severe decline in farmland biodiversity of the last decades has been attributed to changes in farming practices, and organic and low-input farming are assumed to mitigate detrimental effects of agricultural intensification on biodiversity. Since the farm enterprise is the primary unit of agricultural decision making, management-related effects at the field scale need to be assessed at the farm level. Therefore, in this study, data were collected on habitat characteristics, vascular plant, earthworm, spider, and bee communities and on the corresponding agricultural management in 237 farms in 13 European and two African regions. In 15 environmental and agricultural homogeneous regions, 6–20 farms with the same farm type (e.g., arable crops, grassland, or specific permanent crops) were selected. If available, an equal number of organic and non-organic farms were randomly selected. Alternatively, farms were sampled along a gradient of management intensity. For all selected farms, the entire farmed area was mapped, which resulted in total in the mapping of 11 338 units attributed to 194 standardized habitat types, provided together with additional descriptors. On each farm, one site per available habitat type was randomly selected for species diversity investigations. Species were sampled on 2115 sites and identified to the species level by expert taxonomists. Species lists and abundance estimates are provided for each site and sampling date (one date for plants and earthworms, three dates for spiders and bees). In addition, farmers provided information about their management practices in face-to-face interviews following a standardized questionnaire. Farm management indicators for each farm are available (e.g., nitrogen input, pesticide applications, or energy input). Analyses revealed a positive effect of unproductive areas and a negative effect of intensive management on biodiversity. Communities of the four taxonomic groups strongly differed in their response to habitat characteristics, agricultural management, and regional circumstances. The data has potential for further insights into interactions of farmland biodiversity and agricultural management at site, farm, and regional scale.
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