Recreational shore fishing in southern Portugal: biological and socio-economic aspects and perspectives for management

Although overfishing is a concern for many fish stocks, it was for a long time only associated with commercial fishing exploitation, with less or no attention being given to the recreational fisheries. Recent research has shown however that the impact of recreational fishing on particular species can be considerable, and that the recreational harvest needs to be taken into account if fisheries are to be accurately assessed and effectively managed. In Portugal, the first recreational fishing regulations were only recently implemented. However, mirroring other European countries, regulations lacked scientific support, and specific knowledge of the activity was limited to a few studies with limited coverage. This thesis aimed to characterize the biological and socioeconomic aspects of the recreational shore angling activity in southern Portugal, to investigate whether the regulations in place were adequate and effective, and to provide recommendations for improved management and conservation of the inshore fisheries resources. A combined aerial-roving survey was conducted to gather data on fishing effort, catch, fishing trips and socioeconomic aspects (including anglers’ perceptions of regulations) of the recreational angling activity. The analysis of anglers’ catches suggested that compliance with daily bag limits was high, with less than 0.5% of creels exceeding the 10 kg angler-1 day-1 bag limit. Overall, 11.5% of the retained fishes were undersized, but non-compliance with minimum size limits was found to be high for some species (e.g. seabass, 73% undersized). In terms of the impact of recreational shore angling, the total estimated catches corresponded to less than 1% of the commercial landings for the same period (shared species). However, shore angling catches for white sea bream (Diplodus sargus) were found to be considerable, corresponding to 65% of the commercial landings (39.4% of total catch). In terms of anglers’ perceptions about the recreational fishing regulations in Portugal, the present study has shown that the majority of anglers accepted the existence of some kind of SRF regulations, but in general there was a partial or total disagreement with the recreational fishing restrictions recently put in place. Most anglers perceived themselves as not being involved in the decision-making process and claimed that some restrictions lacked a meaningful rationale (e.g. prohibition of fishing from piers/jetties). Fishers’ awareness with regard to specific aspects of the restrictions (such as the rationale for minimum size limits) was found to be very limited. During the same period, catches from sport fishing competitions were examined to test for differences with the recreational activity in terms of catches, and evaluate long term trends in catch and mean size of fish. Catches of the sport fishing competitions were found to be different from those observed for recreational fishing, being dominated by different species (e.g. garfish, mullets), and suggesting different fishing strategies of the the two types of anglers. High percentages of undersized fish were observed to be captured (and retained) during the competitions (in particular seabass, with 100% undersized), probably as a result of a single allowable minimum size (AMS) of 15 cm for all species in use in competitions. Lastly, catch and release fishing experiments were carried out to assess post-release mortality of three recreationally important species: two banded sea bream Diplodus vulgaris; black sea bream Spondyliosoma cantharus; and gilthead sea bream Sparus aurata. Post-release mortalities were found to be low (0-12%). The main predictor of mortality for Sparus aurata was anatomical hooking location, with 63% of the fishes that died being deeply hooked. The results support the release of fish, either from mandatory (e.g. minimum landing sizes) or voluntary practices. In summary, this thesis has demonstrated that the impact of recreational fishing for particular species is significant and needs to be taken into account for more effective management and stock assessment purposes. It has also highlighted several management issues that should be addressed in order to promote more adequate regulations in the future and prevent noncompliance issues. A periodic monitoring of the recreational fishing activity including all fishing modes (i.e. spear fishing, boat, and shore angling) would also be beneficial to ensure a timely knowledge on the global recreational fishing activity and support future management actions.

Methodological aspects of a mathematical programming model to evaluate soil tillage technologies in a risky environment

In this work we develop a methodology for the economic evaluation of soil tillage technologies, in a risky environment, and to capture the influence of farmer behaviour on his technology choice. The model has short-term activities, that change with the type of year, and long-term activities, in which sets of traction investment activities are included. Although these activities do not change with the type of year, they lead to different availability of resources for each type of year, since the same tractor has different available fieldwork days under different weather conditions. We prove that the model is sensitive to the greater income variability resulting from the use of alternative technologies and to the balance between income and risk, accounting for the probability of occurrence of each state of nature and giving an investment solution that considers the best production plan for each type of year. (c) 2005 Elsevier B.V. All rights reserved.

Caractérisation de nouveaux aspects de l’ataxie spastique autosomale récessive de Charlevoix-Saguenay à l’aide d’un procédé d’imagerie: la tomographie par cohérence optique (OCT)

L’Ataxie spastique autosomale récessive de Charlevoix-Saguenay (ARSACS) est un syndrome héréditaire précoce caractérisé par un tableau clinique particulier incluant des anomalies oculaires. Quatorze ARSACS et 36 témoins sains ont été suivis prospectivement durant 20 mois et ont subi différents tests neuro-ophtalmologiques et des mesures par tomographie par cohérence optique. Des augmentations de l’épaisseur moyenne de la couche de fibres nerveuses (mRNFL), de l’épaisseur fovéolaire centrale et de l’épaisseur moyenne du cube maculaire (CAT) ont été mises en évidence chez les ARSACS en comparaison avec les témoins (p<0,0001 à toutes les séances). Une différence cliniquement significative a été observée dans l’évolution au cours du suivi des épaisseurs de la mRNFL et la CAT des ARSACS par rapport aux contrôles (p=0,030, p=0,026 respectivement), et ces paramètres étaient inversement corrélés avec le degré de sévérité de la maladie, suggérant une diminution d’épaisseur de la mRNFL et de la CAT à mesure que progresse la maladie.

Contribution to fundamental aspects of biophysics, radiobiology, and modeling of cellular response to low radiation doses

Tese de doutoramento, Engenharia Biomédica e Biofísica, Universidade de Lisboa, Faculdade de Ciências, 2014

What is poetic attention

Tese de doutoramento, Estudos de Literatura e de Cultura (Teoria da Literatura), Universidade de Lisboa, Faculdade de Letras, 2014

Representações do ctonismo na cultura grega (séculos VIII-V a.C.)

Tese de doutoramento, História (História Antiga), Universidade de Lisboa, Faculdade de Letras, 2014

Going for god : mobility, place and temporality among evangelical guineans in Lisbon

Tese de doutoramento, Antropologia (Antropologia da Religião e do Simbólico), Universidade de Lisboa, Instituto de Ciências Sociais, 2014

Infidelidades : eu, tu, nós e os outros : estudo de variantes e preditores do envolvimento extra-relacional

Tese de doutoramento, Psicologia (Psicologia da Família), Universidade de Lisboa, Faculdade de Psicologia, 2015

Prospects and Problems for Religious Education in England, 1967-1970: Curriculum Reform in Political Context

This article provides an historical case study of an abortive attempt to revise policy and legislation relating to Religious Education (RE) in English schools in the late 1960s and early 1970s. Drawing upon published sources, including parliamentary debates, as well as previously unutilised national archival sources from the Department of Education and Science, it comments upon events which have hitherto been omitted from the historiography of RE, but which help to contextualise significant changes in RE theory and practice at that time. Moreover, it demonstrates that the current parlous state of RE in schools is in part the result of latent and longstanding issues and problems, rather than a consequence of present-day government policy alone. Therefore, in reviewing and developing RE policies and practices, all stakeholders are urged to look more closely at both changes and continuities in the subject’s past and the contexts in which they occurred.

Conceptualizing and Researching the Professionalization of Religious Education Teachers: Historical and International Perspectives

Current discussions on Religious Education (RE), both in Germany and England, focus on the quality of teaching and the professionality of teachers, but neglect the historical and institutional process of professionalization upon which conceptions of teaching quality and teacher professionality hinge. This article seeks to provide definitional clarity by differentiating between individual and collective professionalization; exploring teacher professionalization in general and in the special case of RE; and operationalizing the concept of RE teacher professionalization for the purposes of planned historical and international comparative research. A three-fold conceptualization of professionalization is proposed, consisting of the following inter-related levels: (1) initial and continuing professional development; (2) professional self-organization and professional politics; and (3) professional knowledge. The breadth, complexity and significance of the historical and institutional processes associated with the professionalization of RE teachers at each of these levels is described and discussed. It is argued that further historical and international comparative research on these lines would contribute a broader and deeper understanding of the presuppositions of RE teacher professionality beyond current debates.

The Professionalisation of Non-Denominational Religious Education in England: Politics, Organisation and Knowledge

In response to contemporary concerns, and using neglected primary sources, this article explores the professionalisation of teachers of Religious Education (RI/RE) in non-denominational, state-maintained schools in England. It does so from the launch of Religion in Education (1934) and the Institute for Christian Education at Home and Abroad (1935) to the founding of the Religious Education Council of England and Wales (1973) and the British Journal of Religious Education (1978). Professionalisation is defined as a collective historical process in terms of three inter-related concepts: (1) professional self-organisation and professional politics, (2) professional knowledge, and (3) initial and continuing professional development. The article sketches the history of non-denominational religious education prior to the focus period, to contextualise the emergence of the professionalising processes under scrutiny. Professional self-organisation and professional politics are explored by reconstructing the origins and history of the Institute of Christian Education at Home and Abroad, which became the principal body offering professional development provision for RI/RE teachers for some fifty years. Professional knowledge is discussed in relation to the content of Religion in Education which was oriented around Christian Idealism and interdenominational networking. Changes in journal name in the 1960s and 1970s reflected uncertainties about the orientation of the subject and shifts in understanding over the nature and character of professional knowledge. The article also explores a particular case of resistance, in the late 1960s, to the prevailing consensus surrounding the nature and purpose of RI/RE, and the representativeness and authority of the pre-eminent professional body of the time. In conclusion, the article examines some implications which may be drawn from this history for the prospects and problems of the professionalisation of RE today.

Reflections on conducting research on the ‘war on terror’: religious identity, subjectivity and emotions

In recent years there has been an increase in literature which has explored the insider/outsider position through ethnic identities. However, there remains a neglect of religious identities, even though it could be argued that religious identities have become increasingly important through being prominent in international issues such as the ‘war on terror’ and the Middle East conflict. Through drawing on the concept of subjectivity, I reflect on research I conducted on the impact of the ‘war on terror’ on British Muslims. I explore the space between the insider/outsider position demonstrating how my various subjectivities – the ‘non-Islamic appearance I’, the ‘Muslim I’, the ‘personal I’, the ‘exploring I’, the ‘Kashmiri I’ or the ‘Pakistani I’, the ‘status I’ and the ‘outsider I’ – assisted in establishing trust, openness and commonality. I conclude by demonstrating how the ‘emotional I’ allowed me to manage my own emotions and participants emotions.

A Mixed Blessing: Market-mediated Religious Authority in Neopaganism

This is a study of the interplay of market-mediated and religious authority in the context of new religious movements. Specifically, we explore the ambivalent relationship followers of Wicca have with the marketplace. Our main argument is that in this context marketplace success can be a source of religious legitimacy and validation. At the same time, however, excessive engagement with the market can act as a powerful delegitimizing mechanism, leading religious leaders to continually monitor their practices. Market success is thus a mixed blessing that can increase religious authority and influence, but is just as likely to decrease authority and credibility. Based on an ethnographic study, we explore the boundary work carried out by religious marketers and consumers in order to establish themselves in a “safety area” where engagement with the market brings its positive effects without causing a loss of credibility.

Ecotoxicological aspects related to the presence of pharmaceuticals in the aquatic environment

Pharmaceuticals are biologically active and persistent substances which have been recognized as a continuing threat to environmental stability. Chronic ecotoxicity data as well as information on the current distribution levels in different environmental compartments continue to be sparse and are focused on those therapeutic classes that are more frequently prescribed and consumed. Nevertheless, they indicate the negative impact that these chemical contaminants may have on living organisms, ecosystems and ultimately, public health. This article reviews the different contamination sources as well as fate and both acute and chronic effects on non-target organisms. An extensive review of existing data in the form of tables, encompassing many therapeutic classes is presented.