6,966 research outputs found

    Blue harvest: inland fisheries as an ecosystem service

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    Global food production has increased greatly in recent years and rural livelihoods are much improved in many regions. Yet, despite this clear progress rural poverty and food insecurity remain deeply entrenched in many areas, especially in South Asia and sub-Saharan Africa. In response the international community has renewed calls for increased commitment to meeting the needs of the world's poor. This report, commissioned as a contribution to the 10th Conference of the Parties to the Convention on Biological Diversity taking place in Nagoya, Japan, not only underlines the value of freshwater fisheries but provides guidance on how the ecosystem approach can be applied in order to sustain future harvests.Inland fisheries, Nutrition, Food security, Sustainability, Ecosystems

    Many Strong Voices: Outline for an assessment project design

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    This document defines, guides, and supports the development and implementation of a full assessment of vulnerability and adaptation to climate change in Small Island Developing States (SIDS), under the Many Strong Voices (MSV) programme. A summary of impacts of climate change on SIDS is provided along with a literature review and analysis of vulnerability and adaptation to climate change in SIDS, supplemented by consultations with SIDS partners, to indicate data availability and quality along with how to fill in data gaps. Then, an initial structure for the assessment is detailed with recommendations for implementing a SIDS assessment of climate change vulnerability and adaptation.Recommendations describe the need for the work, the scientific methods to adopt, the focus on case studies, and the emphasis on a problem- driven and action research approach involving local consultations.Research, policy, and practice outcomes of the assessment are also described

    Modelling the spread of American foulbrood in honeybees

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    We investigate the spread of American foulbrood (AFB), a disease caused by the bacterium Paenibacillus larvae, that affects bees and can be extremely damaging to beehives. Our dataset comes from an inspection period carried out during an AFB epidemic of honeybee colonies on the island of Jersey during the summer of 2010. The data include the number of hives of honeybees, location and owner of honeybee apiaries across the island. We use a spatial SIR model with an underlying owner network to simulate the epidemic and characterize the epidemic using a Markov chain Monte Carlo (MCMC) scheme to determine model parameters and infection times (including undetected ‘occult’ infections). Likely methods of infection spread can be inferred from the analysis, with both distance- and owner-based transmissions being found to contribute to the spread of AFB. The results of the MCMC are corroborated by simulating the epidemic using a stochastic SIR model, resulting in aggregate levels of infection that are comparable to the data. We use this stochastic SIR model to simulate the impact of different control strategies on controlling the epidemic. It is found that earlier inspections result in smaller epidemics and a higher likelihood of AFB extinction

    Persuasive language of responsible organisation? A critical discourse analysis of corporate social responsibility (CSR) reports of Nigerian oil companies

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    Purpose The purpose of this paper is to investigate how language (choice) in CSR reports of leading oil companies in Nigeria is used to portray an image of “responsible organisation”. Design/methodology/approach This paper draws insights from communication studies (persuasion theory) and critical discourse analysis (CDA) studies to discursively unpack all those subtle and visible, yet equally invisible, linguistic strategies (micro-level elements): wording (single words), phrases and chains of words (clauses/sentences). These linguistic strategies (micro-level elements) proxy organisational discourses (meso-level elements), which are reflective of wider social practices (macro-level elements). The authors base the investigation on CSR reports of six leading oil companies in Nigeria from 2009 to 2012. Findings The findings of this study reveal that (leading) Nigerian oil companies linguistically use CSR reports to persuasively construct and portray the image of “responsible organisation” in the eyes of wider stakeholders (the communities) despite serious criticism of their corporate (ir) responsibility. Originality/value As opposed to the previous content analysis based studies, this paper contributes to the emerging stream of CDA studies on CSR reporting by providing a finer-grained linguistic analytical schema couched in Fairclough’s (2003) approach to CDA (and persuasion theory). This helps to unravel how persuasive language/discourse of responsible organisation is enacted and reproduced. The authors thus respond to the calls for theoretical plurality in CSR reporting research by introducing persuasion theory from communication studies literature which has hitherto been rarely applied

    Toward the next generation of air quality monitoring: Persistent organic pollutants

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    AbstractPersistent Organic Pollutants (POPs) are global pollutants that can migrate over long distances and bioaccumulate through food webs, posing health risks to wildlife and humans. Multilateral environmental agreements, such as the Stockholm Convention on POPs, were enacted to identify POPs and establish the conditions to control their release, production and use. A Global Monitoring Plan was initiated under the Stockholm Convention calling for POP monitoring in air as a core medium; however long temporal trends (>10 years) of atmospheric POPs are only available at a few selected sites. Spatial coverage of air monitoring for POPs has recently significantly improved with the introduction and advancement of passive air samplers. Here, we review the status of air monitoring and modeling activities and note major uncertainties in data comparability, deficiencies of air monitoring and modeling in urban and alpine areas, and lack of emission inventories for most POPs. A vision for an internationally-integrated strategic monitoring plan is proposed which could provide consistent and comparable monitoring data for POPs supported and supplemented by global and regional transport models. Key recommendations include developing expertise in all aspects of air monitoring to ensure data comparability and consistency; partnering with existing air quality and meteorological networks to leverage synergies; facilitating data sharing with international data archives; and expanding spatial coverage with passive air samplers. Enhancing research on the stability of particle-bound chemicals is needed to assess exposure and deposition in urban areas, and to elucidate long-range transport. Conducting targeted measurement campaigns in specific source areas would enhance regional models which can be extrapolated to similar regions to estimate emissions. Ultimately, reverse-modeling combined with air measurements can be used to derive “emission” as an indicator to assess environmental performance with respect to POPs on the country, region, or global level
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