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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    Selection of mangrove species for shrimp based silvo-aquaculture in the coastal areas of Bangladesh
    Rahman, Khandkar Siddikur ; Islam, Nazrul ; Ahmed, Moin Uddin ; Bosma, Roel H. ; Debrot, Adolphe O. ; Ahsan, Nazmul - \ 2020
    Journal of Coastal Conservation 24 (2020)5. - ISSN 1400-0350
    Coastal Bangladesh - Mangroves - Shrimp - Silvo-aquaculture - Sustainable transformation

    The purpose of this work was to assemble information with which to help identify and select mangrove species most likely to be useful and locally acceptable for use in transforming the dominant current non-mangrove shrimp culture practice in Bangladesh towards more sustainable shrimp silvo-aquaculture in the coastal regions of the country. We reviewed current mangrove use in the extensive aquaculture setting, compiled published evidence on mangrove properties and characteristics that influence their suitability for such use and assessed farmer preferences of the various species. Thirteen mangrove species (all of which are available in Bangladesh) were documented as being used in silvo-aquaculture system in the tropics. Followed by these already “established” mangrove species, Aegialitis rotundifolia, Heritiera fomes and Lumnitzera racemosa could be enlisted as additional “optional” mangrove species to consider, while Ceriops decandra, Excocaria agallocha and Phoenix paludosa were found to be unsuitable for silvo-aquaculture. Based on their experience and indigenous knowledge on mangroves, shrimp farmers ranked (in declining order of preference) Sonneratia apetala, S. caseolaris, Avicennia officinalis, Nypa fruticans, Bruguiera sexangula, Heritiera fomes, and also, the mangrove-associate wild rice species Oryza coarctata as the most suitable species to be used for promoting silvo-aquaculture in the coastal areas of Bangladesh. Thus, the focus group interviews with the farmers not only identified which mangroves enjoy most local support for use in transforming current shrimp culture towards more sustainable shrimp silvo-aquaculture but also provided additional leads for species interesting to further investigation into their suitability for silvo-aquaculture.

    Geo data for late blight control in potato : evaluation of decision support service in Bangladesh, 2017-2018
    Pronk, Annette ; Hengsdijk, Huib ; Ahsan, Hasib ; Michielsen, Jean-Marie - \ 2019
    Wageningen : Wageningen University & Research (GEOPOTATO external report 5) - 67
    Baseline study Rangpur GEOPOTATO
    Pronk, Annette ; Kessel, Geert ; Ahsan, Hasib ; Rahman, Md.M. ; Abdulla Hil, Shafi ; Islam, Nazrul ; Michielsen, Jean-Marie ; Hengsdijk, Huib - \ 2017
    Wageningen : Wageningen University & Research (GEOPOTATO external report 4) - 42
    Geodata To Control Potato Late Blight In Bangladesh
    Kessel, G. ; Moene, A.F. ; Valkengoed, E. van; Voet, P. van der; Michielsen, J.M. ; Ahsan, H. ; Schmelzer, T. ; Maroof, M. ; Syed, A. ; Hengsdijk, Huib - \ 2017
    In: Proceedings of the sixteenth EuroBlight Workshop. - Wageningen : Wageningen University & Research, Praktijkonderzoek AGV (PAGV-Special Report 18) - p. 59 - 60.
    Geo data for late blight control in potato : evaluation of decision support service in Bangladesh, 2016‐2017
    Pronk, Annette ; Ahsan, Hasib ; Rahman, Masudur ; Kessel, Geert ; Hengsdijk, Huib - \ 2017
    Wageningen : Wageningen University & Research (GEOPOTATO external report 3) - 59
    Baseline study GEOPOTATO
    Pronk, A.A. ; Islam, Nazrul ; Ahsan, Hasib ; Rahman, M.M. ; Kessel, G.J.T. ; Hengsdijk, H. - \ 2017
    Wageningen : Wageningen University and Research Centre (GEOPOTATO external report 2) - 59
    Tea and coffee consumption in relation to DNA methylation in four European cohorts
    Ek, Weronica E. ; Tobi, Elmar W. ; Ahsan, Muhammad ; Lampa, Erik ; Ponzi, Erica ; Kyrtopoulos, Soterios A. ; Georgiadis, Panagiotis ; Lumey, L.H. ; Heijmans, Bastiaan T. ; Botsivali, Maria ; Bergdahl, Ingvar A. ; Karlsson, Torgny ; Rask-Andersen, Mathias ; Palli, Domenico ; Ingelsson, Erik ; Hedman, Åsa K. ; Nilsson, Lena Maria ; Vineis, Paolo ; Lind, Lars ; Flanagan, James M. ; Johansson, Åsa - \ 2017
    Human Molecular Genetics 26 (2017)16. - ISSN 0964-6906 - p. 3221 - 3231.

    Lifestyle factors, such as food choices and exposure to chemicals, can alter DNAmethylation and lead to changes in gene activity. Two such exposures with pharmacologically active components are coffee and tea consumption. Both coffee and tea have been suggested to play an important role inmodulating disease-risk in humans by suppressing tumour progression, decreasing inflammation and influencing estrogenmetabolism. Thesemechanismsmay bemediated by changes in DNA methylation. To investigate if DNAmethylation in blood is associated with coffee and tea consumption, we performed a genome-wide DNAmethylation study for coffee and tea consumption in four European cohorts (N=3,096). DNAmethylation wasmeasured fromwhole blood at 421,695 CpG sites distributed throughout the genome and analysed inmen and women both separately and together in each cohort. Meta-analyses of the results and additional regional-level analyses were performed. After adjusting formultiple testing, themeta-analysis revealed that two individual CpG-sites,mapping to DNAJC16 and TTC17, were differentiallymethylated in relation to tea consumption in women. No individual sites were associated withmen or with the sex-combined analysis for tea or coffee. The regional analysis revealed that 28 regions were differentiallymethylated in relation to tea consumption in women. These regions contained genes known to interact with estradiolmetabolismand cancer. No significant regions were found in the sex-combined andmale-only analysis for either tea or coffee consumption.

    Factors affecting the evacuation decisions of coastal households during Cyclone Aila in Bangladesh
    Ahsan Bapon, N. ; Takeuchi, K. ; Vink, K. ; Warner, J.F. - \ 2016
    Environmental Hazards 15 (2016)1. - ISSN 1747-7891 - p. 16 - 42.
    Despite sincere efforts by concerned agencies and recent improvements in hazard warnings, thousands of at-risk people did not evacuate during Aila, a category-I tropical cyclone that struck southwestern coastal Bangladesh in 2009. This study investigated the responses of the people affected by Aila to cyclone warnings and associated evacuation orders, and unveiled behavioural aspects that explain why they did or did not comply with the evacuation orders. Utilising the primary data collected from 420 households living in the severely affected coastal sub-district Koyra, located in Khulna District, this study found that although more than 97% of the households had received cyclone warnings and evacuation orders before Aila's landfall, only around 26% had evacuated. We also examined this study's empirical findings for factors that had dissuaded people from complying with the evacuation orders. Relevant test statistics along with results from principal component analysis suggested that the significant and systematic absenteeism of households from disaster preparedness training appears to be one of the key determinants that affected their evacuation decisions, along with factors related to warning messages, the attributes of cyclone shelters, risk perception, and socioeconomic aspects. A number of recommendations are also presented in this study for people at risk to improve their evacuation rates in future emergencies, not only to save their own lives but also to save their livestock.
    The socioeconomic vulnerability index: A pragmatic approach for assessing climate-change led risks-A case study in southwestern coastal Bangladesh
    Ahsan Bapon, N. ; Warner, J.F. - \ 2014
    International Journal of Disaster Risk Reduction 8 (2014). - ISSN 2212-4209 - p. 32 - 49.
    adaptive capacity - social vulnerability - multiple stressors - natural hazards - cyclone sidr - adaptation - indicators - framework - level - uncertainty
    We develop a Socioeconomic Vulnerability Index (SeVI) for climate change affected communities in seven unions1 of Koyra upazilla 2 in south-western coastal Bangladesh. We survey 60 households from each union to collect data on various vulnerability domains and socioeconomic indicators. The SeVI aggregate these collected data using a composite indicator index, where a relative weight is assigned to each indicator with a view to obtaining weighted average index scores for different vulnerability domains in different unions. Results suggest that southern and south-eastern unions are relatively more vulnerable, which are the most exposed to natural hazards and mostly surrounded by the mangrove forest Sundarbans. Furthermore- social, economic and disaster frequency are found as more influential indicators to adaptive capacity, sensitivity and exposure respectively in Koyra. This pragmatic approach is useful to figure out and monitor socioeconomic vulnerability and/or assess potential adaptation-policy effectiveness in data scarce regions by incorporating scenarios into the SeVI for baseline comparison.
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