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O Parque Marinho Professor Luiz Saldanha (PMLS) foi criado em 1998 e está regulado por um plano de ordenamento desde 2005. Este estudo apresenta os resultados de um inquérito que recolheu percepções de utentes do PMLS sobre a situação ecológica, socioeconómica e de governança 4-7 anos após a implementação faseada das regras nesta área marinha protegida (AMP). As 37 perguntas sobre o sistema social-ecológico e algumas perguntas auxiliares foram respondidas por 64 utentes do PMLS divididos em seis categorias alvo: pescadores profissionais a operar fora do PMLS, pescadores lúdicos, mergulhadores, investigadores, elementos da administração e outra. Diferente estratégia de amostragem foi seguida para cada categoria de utentes, em função do conhecimento prévio de indivíduos com elevado nível de familiaridade com os assuntos do inquérito. Foram respondidas 1694 das 2368 perguntas colocadas (71.5% de resposta, com ausência de resposta na grande maioria dos casos por desconhecimento). As respostas agregadas foram utilizadas para formar indicadores de tendência para assuntos relevantes para qualquer AMP e comparadas estatisticamente com uma distribuição de respostas teórica normal, centrada na percepção de ausência de mudança. Foi também considerado o efeito da opinião pessoal do inquirido sobre o PMLS, avaliando a existência de diferenças significativas na distribuição das respostas de “optimistas” (inquiridos cuja aceitação do PMLS melhorou nos últimos anos) versus restantes. No geral, das respostas dos utentes sobressai uma visão positiva para a evolução do PMLS e da sua interacção com a pesca até 2012, com a excepção de alguns aspectos socioeconómicos importantes ligados à pesca. Existe também alguma variabilidade de perspectivas entre categorias (nomeadamente para assuntos ecológicos) e foram detectados seis casos de diferenças significativas na distribuição de respostas entre “optimistas” e restantes. Comparando estes resultados com os resultados do inquérito para os pescadores do PMLS (Stratoudakis et al., 2015), denota-se a prevalência de uma divergência de percepções nos assuntos ecológicos (com os pescadores a não detectar melhorias) e de uma convergência nos assuntos socioeconómicos e de governança. O objectivo conjunto destes trabalhos é apoiar a avaliação da eficácia de gestão no processo de revisão do plano de ordenamento do PMLS e a iniciação de um plano de monitorização longitudinal focado em metodologias participativas. The Prof. Luiz Saldanha Marine Park (PMLS - Arrábida, Portugal) was created in 1998 and has been managed according to a spatial plan since 2005. This study presents the results from an inquiry on the perceptions of PMLS users in relation to the ecological, socioeconomic and governance situation in the Park 4-7 years after the phased implementation of spatial rules in this Marine Protected Area (MPA). The 37 questions on the social-ecological system and some auxiliary questions were answered by 64 PMLS users from six categories: fishers operating outside the MPA, recreational fishers, divers, researchers, public administration and others. A distinct sampling strategy was followed for each user category depending on the level of previous knowledge of people with high level of familiarity with the questionnaire issues (close to a census on researchers and public administration members with specific activity in PMLS; snowball sampling for professional and recreational fishers; and provision of contacts of experienced divers from the Portuguese Centre of Sub-aquatic Activities). Respondents were asked to indicate their perception of improvement (moderate or large), stability or deterioration (moderate or large) on an ordinal scale of possible responses (5 levels Likert-type scale) for each of the issues at question. In total, 1694 replies were obtained to the 2368 questions placed (response rate of 71.5%, with the great majority of non-response being due to lack of knowledge). Aggregated replies were used to construct trend indicators on issues relevant for any MPA and were compared statistically with a series of samples from a theoretical distribution of replies centered in the lack of change (standardized normal distribution, truncated at 2 standard deviations). The effect of respondent opinion on the PMLS was tested by comparing the distribution of replies between “optimists” (people whose opinion of the PMLS improved in the last 4-5 years) and others. Overall, user replies indicate a positive view on the evolution of the PMLS and its interaction with small scale fisheries until 2012, with 2.04 replies of perceived improvement for every reply of perceived deterioration. This ratio was substantially lower for socioeconomic issues, where a perceived significant improvement in PMLS knowledge and its dissemination were counterbalanced by a perceived deterioration in the ability of excluded fishers to maintain a living related to fishing and the attraction of fishing as employment for youth. This contrast is also detected when comparing the distribution of replies to 5 socioeconomic and governance questions identically phrased with respect to fishers and other users: on two issues (earnings and management solutions) the same group of respondents considered that the evolution in the last 4-5 years was significantly better for other users than for fishers (although no significant difference was found in the evolution of group conflicts with the MPA managing authority). Variation in replies was detected among user categories (mainly in ecological issues), while significant differences between the replies of “optimists” and others were only found in 6 questions (PMLS acceptance by fishers, other users and local community; attraction of fishing as employment for youth; coverage by brown macroalgae and sightings of seabirds and marine mammals). Comparing these results with those of the inquiry to PMLS fishers (Stratoudakis et al., 2015) there is a prevalence of a divergence in perceptions for ecological issues (with PMLS fishers not detecting the improvements perceived by other users) and a convergence in socioeconomic and governance issues (both those indicating improvement and those indicating deterioration). The joint objective of these two studies is to inform the management effectiveness evaluation that is included in the process of revision of the spatial plan for the PMLS and to set the basis for a longitudinal monitoring plan focusing on participatory methods.

Assumptions of daily spawning synchronicity and estimation of egg mortality for Atlanto-Iberian sardine are revised in the context of daily estimators of egg production. An extensive database of ichthyoplankton surveys from 1985 to 2008, aggregated at different levels, is used, a set of mortality models is derived, and a comparison among them is carried out using standard statistical techniques. Analysis of the database shows Atlanto-Iberian sardine to be a late-evening spawner, in agreement with previous knowledge, but suggests a lengthier daily period of spawning. Comparison among the set of mortality models used suggests that estimates of mortality from single surveys for Atlanto-Iberian sardine are often unreliable, and that the mean estimates obtained after aggregating data from various years are statistically significant, more robust, and in line with existing information gathered from the literature., Sí

Data from 10 acoustic surveys targeting sardine (spring and autumn), 3 acoustic surveys targeting blue whiting (spring) and 9 groundfish surveys (summer and autumn) were used to describe the distribution and relative abundance of snipefish (Macroramphosus spp.) off Portugal and the Gulf of Cadiz in recent years (1998-2003). Snipefish (8-17 cm) were regularly found off Portugal, occasionally in large concentrations, but were absent from the Gulf of Cadiz. Off northern Portugal, snipefish were distributed along the outer shelf and upper slope, clearly separated from sardine (the most abundant species in the inner shelf) and partially overlapping with blue whiting (Micromesistius poutassou), the most abundant species in the upper slope. Snipefish were most abundant in the outer shelf of south-western Portugal, preferentially distributed in large aggregations around the Canyon of Setubal and partially overlapping with the distribution of boarfish (Capros aper) and blue whiting (both abundant in the upper slope of south-western Portugal). Off southern Portugal snipefish were almost exclusively distributed in the outer shelf and were significantly smaller than in south-western (intermediate) and northern Portugal (large). Acoustic estimates of total snipefish biomass ranged between 176 – 504 thousand tonnes within the study period, with more than half off south-western Portugal. Within the period 1998-2003, and despite the lack of directed fishing activity, a marked decline in abundance and a small but significant increase in mean length were observed, particularly off south-western Portugal., Datos de 10 cruceros acústicos dirigidos a la sardina (Sardina pilchardus) (primavera y otoño), 3 cruceros acústicos dirigidos a la bacaladilla (Micromesistius poutassou) y 9 cruceros demersales (verano y otoño) fueron utilizados para describir la distribución y abundancia relativa del trompetero (Macroramphosus spp.) en la costa portuguesa y Golfo de Cádiz en los últimos años (1998-2003). El trompetero (con tallas comprendidas entre 8 y 17 cm) estuvo presente frecuentemente en aguas portuguesas, en ocasiones en elevadas concentraciones y ha estado ausente del Golfo de Cádiz. En las aguas del Norte de Portugal, el trompetero estuvo presente sobre el exterior de la plataforma continental y la parte superior del talud, claramente separado de la sardina (la especie más abundante de la plataforma interior) y sobrepuesto parcialmente a la bacaladilla, la especie más abundante del talud superior. El trompetero fue más abundante en el exterior de la plataforma continental del Sudoeste de Portugal, encontrándose preferencialmente en elevadas densidades alrededor del cañón de Setúbal, solapándose parcialmente al ochavo (Capros aper) y a la bacaladilla, ambos abundantes en el talud superior del sudoeste de Portugal. Al sur de Portugal, el trompetero se encontró casi exclusivamente en la plataforma exterior, siendo los individuos significativamente más pequeños que en el sudoeste (medianos) y en el norte (mayores). La estimación acústica de la biomasa del trompetero osciló entre 176000-504000 toneladas en el periodo estudiado, con más de mitad en la zona sudoeste de Portugal. En el periodo de 1998-2003, se verificó un descenso acentuado en la abundancia y un ligero aumento del tamaño medio de los individuos, especialmente en el sudoeste de Portugal.