| 1. |
- Bergström, Ulf, et al.
(författare)
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Long-term effects of no-take zones in Swedish waters
- 2022
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Rapport (övrigt vetenskapligt/konstnärligt)abstract
- Marine protected areas (MPAs) are increasingly established worldwide to protect and restore degraded ecosystems. However, the level of protection varies among MPAs and has been found to affect the outcome of the closure. In no-take zones (NTZs), no fishing or extraction of marine organisms is allowed. The EU Commission recently committed to protect 30% of European waters by 2030 through the updated Biodiversity Strategy. Importantly, one third of these 30% should be of strict protection. Exactly what is meant by strict protection is not entirely clear, but fishing would likely have to be fully or largely prohibited in these areas. This new target for strictly protected areas highlights the need to evaluate the ecological effects of NTZs, particularly in regions like northern Europe where such evaluations are scarce. The Swedish NTZs made up approximately two thirds of the total areal extent of NTZs in Europe a decade ago. Given that these areas have been closed for at least 10 years and can provide insights into long-term effects of NTZs on fish and ecosystems, they are of broad interest in light of the new 10% strict protection by 2030 commitment by EU member states.In total, eight NTZs in Swedish coastal and offshore waters were evaluated in the current report, with respect to primarily the responses of focal species for the conservation measure, but in some of the areas also ecosystem responses. Five of the NTZs were established in 2009-2011, as part of a government commission, while the other three had been established earlier. The results of the evaluations are presented in a synthesis and also in separate, more detailed chapters for each of the eight NTZs. Overall, the results suggest that NTZs can increase abundances and biomasses of fish and decapod crustaceans, given that the closed areas are strategically placed and of an appropriate size in relation to the life cycle of the focal species. A meta-regression of the effects on focal species of the NTZs showed that CPUE was on average 2.6 times higher after three years of protection, and 3.8 times higher than in the fished reference areas after six years of protection. The proportion of old and large individuals increased in most NTZs, and thereby also the reproductive potential of populations. The increase in abundance of large predatory fish also likely contributed to restoring ecosystem functions, such as top-down control. These effects appeared after a 5-year period and in many cases remained and continued to increase in the longer term (>10 years). In the two areas where cod was the focal species of the NTZs, positive responses were weak, likely as an effect of long-term past, and in the Kattegat still present, recruitment overfishing. In the Baltic Sea, predation by grey seal and cormorant was in some cases so high that it likely counteracted the positive effects of removing fisheries and led to stock declines in the NTZs. In most cases, the introduction of the NTZs has likely decreased the total fishing effort rather than displacing it to adjacent areas. In the Kattegat NTZ, however, the purpose was explicitly to displace an unselective coastal mixed bottom-trawl fishery targeting Norway lobster and flatfish to areas where the bycatches of mature cod were smaller. In two areas that were reopened to fishing after 5 years, the positive effects of the NTZs on fish stocks eroded quickly to pre-closure levels despite that the areas remained closed during the spawning period, highlighting that permanent closures may be necessary to maintain positive effects.We conclude from the Swedish case studies that NTZs may well function as a complement to other fisheries management measures, such as catch, effort and gear regulations. The experiences from the current evaluation show that NTZs can be an important tool for fisheries management especially for local coastal fish populations and areas with mixed fisheries, as well as in cases where there is a need to counteract adverse ecosystem effects of fishing. NTZs are also needed as reference for marine environmental management, and for understanding the effects of fishing on fish populations and other ecosystem components in relation to other pressures. MPAs where the protection of both fish and their habitats is combined may be an important instrument for ecosystembased management, where the recovery of large predatory fish may lead to a restoration of important ecosystem functions and contribute to improving decayed habitats.With the new Biodiversity Strategy, EUs level of ambition for marine conservation increases significantly, with the goal of 30% of coastal and marine waters protected by 2030, and, importantly, one third of these areas being strictly protected. From a conservation perspective, rare, sensitive and/or charismatic species or habitats are often in focus when designating MPAs, and displacement of fisheries is then considered an unwanted side effect. However, if the establishment of strictly protected areas also aims to rebuild fish stocks, these MPAs should be placed in heavily fished areas and designed to protect depleted populations by accounting for their home ranges to generate positive outcomes. Thus, extensive displacement of fisheries is required to reach benefits for depleted populations, and need to be accounted for e.g. by specific regulations outside the strictly protected areas. These new extensive EU goals for MPA establishment pose a challenge for management, but at the same time offer an opportunity to bridge the current gap between conservation and fisheries management.
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| 2. |
- Andersson, Jan, et al.
(författare)
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Inventering och modellering av fisk- och kräftdjurssamhället i Stigfjorden sommaren 2012
- 2013
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Rapport (övrigt vetenskapligt/konstnärligt)abstract
- Under 31 juli-3 augusti 2012 utförde Kustlaboratoriet vid SLU Aqua ett inventeringsfiske med småryssjor i Stigfjorden mellan Orust och Tjörn med syfte att beskriva fisksamhället i fjorden och att kartlägga viktiga fiskhabitat. Totalt fiskades 80 stationer på djup från ytan ner till 20 m. Området uppvisade ovanligt höga tätheter av juvenil rödspotta, gråsej och torsk. Även fångsterna av stensnultra och tånglake var höga, och bland kräftdjuren dominerade strandkrabban. Resultaten från Stigfjorden jämförs med resultat från tidigare och samtida undersökningar av samma karaktär. Den rumsliga fördelningen av olika arter i förhållande till habitatet beskrevs statistiskt med hjälp av generella additiva modeller, där fångsterna i ryssjorna relateras till data på olika miljövariabler. De statistiska modellerna i kombination med kartor över miljövariabler i området användes sedan för att i GIS producera heltäckande kartor över potentiella habitat för arterna. De arter som modellerades var torsk <18 cm, torsk >18 cm, ål, rödspotta, vitling, stensnultra, tånglake och strandkrabba. Modellernas förklaringsgrad var generellt god, och vattendjup utgjorde den variabel som var viktigast för fördelningen av de flesta arter. Ungtorsk och rödspotta förekom i högst tätheter i de djupare delarna av fjorden, medan gulål, tånglake och strandkrabba, där de två förstnämnda tillsammans med torsken är rödlistade, främst återfanns i de grunda delarna av fjorden. Sammantaget tyder resultaten på att Stigfjorden håller viktiga livsmiljöer för ett flertal fiskarter, framför allt som uppväxtområde för arter som t ex rödspotta och gråsej.
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| 3. |
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| 4. |
- Bergström, Ulf, et al.
(författare)
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Planning the Bothnian Sea : Outcome of Plan Bothnia - a transboundary Maritime Spatial Planning Pilot in the Bothnian Sea
- 2012
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Bok (övrigt vetenskapligt/konstnärligt)abstract
- In all parts of the world the sea is a source of life, of energy, of food, of commerce, of fun. Its water, wind, and waves are all in demand – as a playground for pleasure-seekers and nature-lovers, as a highway for international commerce, as a home for unique communities of wildlife and people. All this is also true for the Bothnian Sea, a part of the northern European Baltic Sea between Finland and Sweden. The Bothnian Sea is used by two neighbouring highly developed societies. There are many demands on its resources, and its open spaces are highly coveted areas for developments such as wind power farms. This relatively sparsely habitated corner of the world is also, at least at times, a place of wild seas and ancient heritage. Like planning on land, maritime spatial planning is a process that has to incorporate ideals of the public good and the various politically-anchored ways to define this, taking in to account private development interests as well as the physical realities of limited natural resources and fragile ecosystems. This book provides an introduction to the Bothnian Sea and the ideas around maritime spatial planning for its offshore areas. We have tried to present a balance between the perspectives of competing interests. As this has been a pilot initiative, we have not aimed to give you ready answers, but instead try to provoke further debate. The Bothnian Sea and its future are in your hands. The editor
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| 8. |
- Carm, Ellen, 1954-
(författare)
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Caught in Culture? : Cultural Transformation through HIV/AIDS Prevention Education in Zambia
- 2017
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Doktorsavhandling (övrigt vetenskapligt/konstnärligt)abstract
- The study explores the role and contribution of education in developing a localized and relevant HIV/AIDS prevention strategy through a multi-voiced approach, involving the educational institutions, as well as the traditional leaders, community-members, including parents. The study comprised all public schools in one Zambian province from 2002-2008. The study explores, among other factors, the role of traditional culture in mitigating and exacerbating the spread of the disease.Zambia was one of the countries hardest hit by the HIV/AIDs epidemic, and one of the few countries in the region that, in 2002, had a clear policy on the role of education in fighting the epidemic. Through the process of developing and implementing a learner-centered interactive HIV/AIDS education program in the province. based upon MOE`s HIV/AIDS policies and strategies, syllabi, and teachers guides, and at the same time emphasizing the broader community as a point of departure.The qualitative and interpretivist research was conducted within a constructivist grounded theoretical approach. The study applies comprehensive and multilayered perspectives while utilizing a broad range of methods. Documentary analyses, structured and semi-structured interviews, in depth conversations with traditional and educational leaders, teachers, parents and pupils, were all carried out during the period of the study. Nvivo, a computer-supported data analysis tool was used to support the process of categorizing the qualitative data and the study applied Cultural- and Historical Activity Theory for analytic purposes.The study revealed the mismatch between the decentralized, national HIV/AIDS prevention education approach, as stated in the policy documents and the global UNAIDS, centralized and cross-sectoral strategies favored by the Zambian government. The uncoordinated efforts did not reach the grassroots level, where professionals, at district and school level, perceived and applied policies in highly different ways, if at all reaching students and the communities.The main categories of drivers of the epidemic were of socio-cultural and economic character, e.g. polygamy, sexual cleansing, local healing, gender inequality and poverty, sexual violence, multiple concurrent sexual partners and prostitution, but there were also variety of local drivers, depending upon context.When analyzing the participatory approaches of the HIV/AIDS prevention strategy, predominantly, at the school-community level, the findings revealed that the traditional leaders, being legitimate leaders in their kingdoms, and the custodians of culture and traditions, were found to be gate openers to promote behavioral change and cultural transformation in their villages.The traditional leaders worked hand in hand with the schools and the villagers. Their involvement legitimated that discourses and HIV/AIDS prevention actions were taken at school as well as within their own chiefdom. Utilizing their traditional leadership structures, the chiefs sustained their cultural rites, e.g. cleansing, in order to chase away the evil spirits, by turning the rites into practices that do no put people at risk for contracting HIV. Particularly at the global and state level, culture has been seen as drivers of the epidemic. The study revealed that the traditional leaders used their role as significant others, became gate-openers, using their legitimate role as custodians of culture to transform cultural rites and practices.
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| 9. |
- Darmanis, Spyros, et al.
(författare)
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Multiplexed solid-phase proximity ligation assays: Highly specific and parallel protein measurements with DNA sequencing readout
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Annan publikation (övrigt vetenskapligt/konstnärligt)abstract
- Identification and validation of protein biomarkers is a very important step towards the understanding of the underlying mechanisms of disease, early diagnosis and efficient patient treatment. To carry out this task, methods are needed that would allow us to mine the proteome with sufficient sensitivity and specificity in large sets of samples. We present herein the development of a Multiplexed Proximity Ligation Assay (MultiPLAy), to facilitate efficient protein profiling in a parallel, sensitive and specific manner. We showed that for the simultaneous analysis of 35 proteins MultiPLAy exhibited an improved sensitivity over conventional sandwich assays as well as a smaller susceptibility to background signal increase in the transition from singleplex to multiplex. We used MultiPLAy to identify putative biomarkers in two separate sample cohorts of colorectal cancer (CRC) and cardiovascular disease (CVD) and with the use a novel multivariate analysis approach were able to identify new, as well as already known diagnostic biomarkers. Furthermore we were able to combine MultiPLAy with the use of next-generation sequencing allowing for the first time digital recording of protein profiles in blood. We demonstrated good reproducibility of MultiPLAy coupled to next-generation sequencing, as well as a satisfactory correlation to standard real-time PCR readout. We conclude that MultiPLAy has great potential as a basis for highly multiplexed protein detection assays that can be utilized for the identification of large numbers of proteins or protein variants. This will allow extensive validation of protein expression patterns in biobanked samples and in prospective studies, and can provide a much-needed platform for efficient validation of diagnostic markers for clinical use.
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| 10. |
- Dutt, Khaleda Gani, 1968-
(författare)
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The Role of Adult Literacy in Transforming the Lives of Women in Rural India: Overcoming Gender Inequalities : Comparative case studies in Bhilwara District Rajasthan & Howrah District West Bengal India
- 2017
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Doktorsavhandling (övrigt vetenskapligt/konstnärligt)abstract
- The Indian diaspora is woven around castes, languages, dialects, religions- a young nation boasting of an ancient civilization in which inequalities are deeply ingrained in its culture and traditions. Although vital government interventions have succeeded in increasing the literacy rate of women in both urban and rural areas general household characteristics such as income, caste, occupation and education attainments of parents still continue to determine access, attendance, completion and learning outcomes of girls and women from severely disadvantaged communities. The critical issue investigated in the comparative case study is why and how established hegemonic roles changed because of the catalytic role of adult literacy. The research was conducted in Bhilwara District, Rajasthan and Howrah District, West Bengal, India where literacy has played an intrinsic role in transforming the lives of the rural and marginalized women. In Indian society social norms often prevent women from exercising their free choice and from taking full and equal advantage of opportunities for individual development, contribution and reward. So assessing empowerment/transformation would mean identifying the constraints to empowerment, how women’s agency has developed and finally looking if ‘agency’ was able to address the constraints to women’s access to adult literacy. This would also entail seeking answers to questions such as ‘How is transformation represented in their narratives? What was the impact of literacy upon their lives?
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