Browsing by Author "Loureiro, Nuno de Santos"
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- Análise da acessibilidade de percursos culturais em Faro. Um contributo para a regeneração urbana e o turismo acessívelPublication . Pires Rosa, Manuela; Landim, Isabel; Loureiro, Nuno de SantosO Turismo Acessível para Todos atende ao desenvolvimento de atividades de lazer e tempo livre por todo o tipo de pessoas, independentemente das suas condições físicas, sensoriais, sociais ou culturais. Acontece que na sociedade há um conjunto de barreiras físicas que limitam a atividade turística das pessoas com mobilidade reduzida, sobretudo as com deficiência. Os princípios do Design Universal devem incorporar-se no desenho urbano das cidades, na arquitetura dos edifícios, nos meios de transporte e nas tecnologias de informação e comunicação, de forma a promover a inclusão social e qualidade de vida de todos. Com esta comunicação pretende-se apresentar a análise e o diagnóstico das condições de acessibilidade universal da rede de percursos pedonais, de interesse cultural, localizada no Centro Histórico da cidade de Faro. Pretende averiguar-se se as suas características físicas respeitam as exigências do Regime Jurídico Nacional da Acessibilidade. O diagnóstico é concretizado através de um modelo de avaliação do grau de conformidade dos espaços considerando parâmetros de acessibilidade urbanística. A metodologia aplicada, através de um Sistema de Informação Geográfica, constitui um instrumento de apoio à decisão nos processos de regeneração urbana. Os resultados apontam para situações de inacessibilidade nos percursos culturais comprometendo os objetivos do turismo acessível e sustentável.
- Análise da acessibilidade de percursos culturais em Faro. Um contributo para a regeneração urbana e o turismo acessívelPublication . Pires Rosa, Manuela; Landim, Isabel; Loureiro, Nuno de SantosO Turismo Acessível para Todos atende ao desenvolvimento de atividades de lazer e tempo livre por todo o tipo de pessoas, independentemente das suas condições físicas, sensoriais, sociais ou culturais. Acontece que na sociedade há um conjunto de barreiras físicas que limitam a atividade turística das pessoas com mobilidade reduzida, sobretudo as com deficiência. Os princípios do Design Universal devem incorporar-se no desenho urbano das cidades, na arquitetura dos edifícios, nos meios de transporte e nas tecnologias de informação e comunicação, de forma a promover a inclusão social e qualidade de vida de todos. Com esta comunicação pretende-se apresentar a análise e o diagnóstico das condições de acessibilidade universal da rede de percursos pedonais, de interesse cultural, localizada no Centro Histórico da cidade de Faro. Pretende averiguar-se se as suas características físicas respeitam as exigências do Regime Jurídico Na-cional da Acessibilidade. O diagnóstico é concretizado através de um modelo de avaliação do grau de conformidade dos espaços considerando parâmetros de acessibilidade urbanística. A metodologia aplicada, através de um Sistema de Informação Geográfica, constitui um instrumento de apoio à decisão nos processos de regeneração urbana. Os resultados apontam para situações de inacessibilidade nos percursos culturais comprometendo os objeti-vos do turismo acessível e sustentável.
- Carta agrícola e florestal do Algarve na transição do século XIX para o século XX. Concelho de Loulé. Memória explicativa e descritivaPublication . Loureiro, Nuno de SantosAté hoje, uma história detalhada da ocupação e usos do solo no concelho de Loulé começava nos anos de 1950, a partir da publicação da Carta Agrí cola e Florestal de Portugal levada a cabo pelo Serviço de Reconhecimento Agrário do Ministério da Economia. A recente descoberta das ‘Pranchetas Chorographico-Agricolas’, fruto de levantamentos de campo realizados en tre as décadas de 1880 e 1900 e desenhadas à escala de 1:50.000, permite agora antecipar em cinco décadas essa relevante data. Apresenta-se aqui a Carta Agrícola e Florestal do concelho de Loulé no início do Século XX, preparada com base nas referidas pranchetas corográ fico- agrícolas, até ao momento absolutamente inéditas. É uma cartografi com apreciável detalhe e que ilustra a ocupação e usos do solo num pe ríodo histórico em que o Algarve estava bastante desflorestado e não tinha ainda começado a Campanha do Trigo, a qual viria a impulsionar subs tanciais alterações nas paisagens rurais de todo o Portugal mediterrânico.
- Cultural accessible pedestrian ways. The case of Faro historic centrePublication . Pires Rosa, Manuela; Landim, Isabel Tavares; Loureiro, Nuno de SantosIn a historic city the existence of accessible pedestrian routes constitutes an essential feature to a true access to culture heritage, contributing for processes of social inclusion. It is necessary to create accessible pedestrian infrastructures network to hold a set of attributes that guarantee usability for all citizens. The creation and design of an accessible physical environment should be considered as a criterion of urban quality, which will make walking more pleasant not only for the elderly and people with disabilities but, also, for the entire resident population and tourists. In this case study it is ascertainable whether the physical characteristics of pedestrian infrastructures of cultural interest, located in the Historical Centre of Faro (Portugal), comply with the requirements of the National Law of Accessibility. There has, therefore, been created a methodology for evaluating the accessibility of pedestrian infrastructure through the construction of performance indicators. The analysis is achieved through a model of evaluation of the degree of conformity of the spaces, and presented, spatially, with appeal to a Geographical Information System, which is a tool to support the decision taking in the processes of urban rehabilitation, thus contributing to the choice of priority areas of intervention in the field of accessibility. The diagnosis confirms the existence of inaccessible pedestrian infrastructure and concludes the need to trigger processes of urban renovation.
- Effect of body size on the long-term reproductive output of eastern Atlantic loggerhead turtles Caretta carettaPublication . Martins, Samir; Cardona, L.; Abella, E.; Silva, E.; Loureiro, Nuno de Santos; Roast, M.; Marco, A.We assessed the relationship between body size and several important life history parameters to understand the demographic significance of interpopulation variability in the body size of loggerhead turtles Caretta caretta nesting on Boa Vista Island (Cabo Verde). The adult growth rate (0.34 +/- 0.60 cm yr-1), annual mortality rate (0.13, 95% CI: 0.12-0.15) and remigration interval (3.1 +/- 1.2 yr) were independent of curved carapace length (minimum curved carapace length [CCLmin]). Conversely, the body condition index decreased significantly with female CCLmin. The clutch size, mean egg mass, mean hatchling straight carapace length and mean hatchling mass increased significantly with female CCLmin. However, there was no relationship between female size and hatching success. Randomization and bootstrapping were used to incorporate variability when calculating the average individual fecundity over 20 yr, a period that accumulated, on average, 94% of the adult mortality. The overall fecundity during this period increased with carapace length at first maturity (71 cm CCLmin: 815 eggs, 95% CI: 653-863; 80 cm CCLmin: 906 eggs, 95% CI: 822-959; 90 cm CCLmin: 1089 eggs, 95% CI: 926-1415). However, only 8% of the adult females nesting on Boa Vista Island are larger than 90 cm CCLmin, and they produce less than 12% of the total annual egg production. The scarcity of large females might result from a shortage of high-quality foraging grounds where females may reach first sexual maturity at a large carapace length and from the combined effect of a small carapace length at first sexual maturity, low adult somatic growth and high adult mortality.
- Evaluating loggerhead sea turtle (Caretta caretta) bycatch in the small-scale fisheries of Cabo VerdePublication . Martins, Samir; Tiwari, Manjula; Rocha, Fernando; Rodrigues, Edson; Monteiro, Ravidson; Araújo, Sónia; Abella, Elena; Loureiro, Nuno de Santos; Clarke, Leo J.; Marco, AdolfoThe incidental or target capture of sea turtles by small-scale fisheries (SSF) has been receiving increasing attention in recent years due to its high impact. Here, we evaluated the impact of the SSF on sea turtles in Cabo Verde, which hosts the largest rookery of the endangered Eastern Atlantic loggerhead turtle (Caretta caretta) population. This is the most comprehensive study evaluating the impact of SSF on sea turtles in the Cabo Verde Archipelago involving more than 85% of boats and more than 20% of the fishermen registered in the archipelago. Between the years of 2011 and 2014, 763 artisanal fishermen were interviewed at all the main ports and fishing communities of seven islands. Artisanal fishermen reported a mean annual capture of 1.5 turtles per boat indicating that a minimum of 1675 sea turtles could be landed per year in this fishing sector alone, with 65% in Santiago Island (which host the country's capital, Praia). Most captures (95.7%) occurred from May to September and coincided with the loggerhead turtle nesting season. These results suggest a severe impact of the SSF on adult loggerheads turtles in Cabo Verde as well as green (Chelonia mydas) and hawksbill (Eretmochelys imbricata) juvenile turtles. To mitigate this impact, measures such as revising the current legislation for fisheries, the supervision and control of landings, especially in the most remote ports of the Archipelago, the regulation of the SSF during the nesting season around the main nesting areas, awareness-raising campaigns, sustainable activities, and alternative sources of income in fishing communities are recommended.
- Global phylogeography and evolution of chelonid fibropapilloma-associated herpesvirusPublication . Patricio, A. R.; Herbst, L. H.; Duarte, A.; Velez-Zuazo, X.; Loureiro, Nuno de Santos; Pereira, N.; Tavares, L.; Toranzos, G. A.A global phylogeny for chelonid fibropapilloma-associated herpesvirus (CFPHV), the most likely aetiological agent of fibropapillomatosis (FP) in sea turtles, was inferred, using dated sequences, through Bayesian Markov chain Monte Carlo analysis and used to estimate the virus evolutionary rate independent of the evolution of the host, and to resolve the phylogenetic positions of new haplotypes from Puerto Rico and the Gulf of Guinea. Four phylogeographical groups were identified: eastern Pacific, western Atlantic/eastern Caribbean, mid-west Pacific and Atlantic. The latter comprises the Gulf of Guinea and Puerto Rico, suggesting recent virus gene flow between these two regions. One virus haplotype from Florida remained elusive, representing either an independent lineage sharing a common ancestor with all other identified virus variants or an Atlantic representative of the lineage giving rise to the eastern Pacific group. The virus evolutionary rate ranged from 1.62x10(-4) to 2.22x10(-4) substitutions per site per year, which is much faster than what is expected for a herpesvirus. The mean time for the most recent common ancestor of the modern virus variants was estimated at 192.90-429.71 years ago, which, although more recent than previous estimates, still supports an interpretation that the global FP pandemic is not the result of a recent acquisition of a virulence mutation(s). The phylogeographical pattern obtained seems partially to reflect sea turtle movements, whereas altered environments appear to be implicated in current FP outbreaks and in the modern evolutionary history of CFPHV.
- Hatchery efficiency as a conservation tool in threatened sea turtle rookeries with high embryonic mortalityPublication . Martins, Samir; Ferreira-Veiga, Nádia; Rodrigues, Zuleika; Querido, Adélcio; Loureiro, Nuno de Santos; Freire, Kátia; Abella, Elena; Oujo, Carolina; Marco, AdolfoSea turtles are globally endangered and facing anthropogenic threats. To mitigate the negative impacts on sea turtle populations, different conservation strategies have been developed and implemented. For instance, when an endangered population suffers a high embryonic mortality from predation, human poaching, beach flooding or erosion, the relocation of clutches to safer and controlled areas can lower these threats. However, the use of hatcheries is controversially discussed, with some previous studies reporting negative results such as low hatching success, skewed sex ratio or phenotypic alterations of hatchlings. In this study, we evaluated the efficiency of beach hatcheries compared to in-situ incubation in Cabo Verde using data from six nesting seasons (2013-2018). During this study, several thousand high-risk clutches from loggerhead turtle (Caretta caretta Linnaeus, 1758) were relocated to a hatchery constructed within the Sea Turtle Natural Reserve (STNR, Boa Vista Island). Our findings confirmed that the in-situ nests within the STNR have extremely high egg mortality that is usually over 70%. Mean hatching success of clutches relocated to hatcheries was significantly higher than in-situ clutches with mean values between 70 and 85%. No significant differences were observed in the incubation period, the size and the behavioural response of hatchlings between relocated and in-situ clutches. As long as a sea turtle population is endangered and hatching success is low, clutch relocation programs which are designed to have an impact at the population level, are considered an efficient tool that contributes to its recuperation. Nevertheless, strict recommendations that increase hatching success while maintaining natural hatchling phenotype must be implemented.
- Hatchery efficiency for turtle conservation in Cabo VerdePublication . Martins, Samir; Ferreira-Veiga, Nádia; Rodrigues, Zuleika; Querido, Adélcio; Loureiro, Nuno de Santos; Freire, Kátia; Abella, Elena; Oujo, Carolina; Marco, AdolfoThis paper evaluated the efficiency of beach hatcheries as a conservation tool for threatened sea turtle clutches. During six nesting seasons (2013 to 2018), several thousand high-risk clutches from loggerhead turtles (Caretta caretta) were relocated to a hatchery constructed on the same beach, within the Sea Turtle Natural Reserve (STNR, Boa Vista Island, Cabo Verde). Some parameters like hatching success; incubation period, hatchlings’ morphology and their behavioral response were compared to in-situ clutches.
- High variability in nest site selection in a loggerhead turtle rookery, in Boa Vista Island, Cabo VerdePublication . Martins, Samir; Patrício, Rita; Clarke, Leo J.; Loureiro, Nuno de Santos; Marco, AdolfoAmong sea turtles, nest site selection is a crucial factor for hatching success and population viability. The relocation of otherwise doomed clutches to safe hatcheries has been widely promoted as a conservation strategy, although this may promote artificial selection of poorly adapted genotypes. In this study, we used multiyear spatial nesting data of individual loggerhead turtles (Caretta caretta) from one of the largest Atlantic rookeries, in Cabo Verde, across six consecutive nesting seasons (2013-2018), to identify spatial nesting patterns, assess how individual nest site selection is influenced by female size and age, and estimate the impacts on the reproductive output. Although females nested across the entire beach width, they preferentially nested in the middle of the beach, avoiding to nest both close to the tideline and close to the vegetation line. Hatching success decreased towards the waterline, while the risk of nest inundation or predation was high, regardless of nest location. In general, females showed high variability in nest site selection, except larger females (> 93 cm curved carapace length) that showed higher repeatability (r = 0.50, SE = 0.14, 95% CI: 0.16-0.72) in distances to the vegetation. We therefore suggest that the relocation of doomed clutches should be considered for this endangered rookery, as clutch relocation should not substantially distort the gene pool, assuming nest choice is a heritable trait. In addition, we recommend the preservation of beach vegetation, particularly in areas with human development.