Browsing by Issue Date, starting with "2024-10-16"
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- An assessment model of the Algarve as a sustainable tourism destination: a conceptual frameworkPublication . Nobre Pereira, Luis; Muhs, Christina Susanne; Andraz, Jorge; Nunes, Rui Miguel da Cunha; Lança, Milene; Silva, joãoSustainable tourism assessment models emphasize the need for holistic, integrated evaluations of tourism destinations, particularly in mature and mass tourism areas. While best practices can be shared, each destination requires a tailored approach, considering its unique features like infrastructure and natural assets. Research shows that sustainable tourism should involve continuous evaluation rather than a one-time assessment. This article develops a model for the ongoing review of sustainable tourism in the Algarve, a famous sun, sea, and sand destination in Portugal. Using qualitative and quantitative methods, the model was designed by analyzing existing frameworks and their relevant dimensions. A questionnaire was then administered to local stakeholders to validate and refine the selected indicators, which were ultimately used to create a framework for monitoring sustainable tourism in the region.
- Seagrass biodiversity under the latest‐generation scenarios of projected climate changePublication . Gouvêa, Lidiane; Fragkopoulou, Eliza; Araújo, Miguel B.; Serrao, Ester A.; Assis, JorgeAimThe potentially cascading consequences of climate changes on redistribution of habitat-forming species, like seagrasses, remain a major research gap. Empirical demonstrations of local population changes are increasingly reported without a globally integrated predictive framework as a leading testable hypothesis. Therefore, here, we aimed to estimate changes in species richness, community composition, and areas of climatic refugia under future climate scenarios.LocationGlobal scale.Time PeriodPresent-day conditions (from 2010 to 2020) and for three Shared Socioeconomic Pathway (SSP) scenarios of future climate change (from 2090 to 2100).Major Taxa StudiesSeagrasses (plantae).MethodsWe coupled seagrass occurrences with environmental predictors (temperature, salinity, nitrate, wave energy, and ice) in stacked species distribution modelling.ResultsModels estimated a present global extent of 917,169 km2 with high species richness in Temperate Australasia, Indo-Pacific, and Temperate North Pacific. Future projections predicted widespread spatial redistribution, with Arctic expansions, losses in lower latitudes, and deeper vertical ranges, while globally maintaining the area extent occupied worldwide by seagrass species (only 5% of change). Species richness increased poleward under more drastic scenarios (SSP3-7.0 and SSP5-8.5), with losses in tropical zones (30oN to 30oS). Local climatic refugia are retained in all scenarios but decrease under higher emissions. Additionally, even where seagrass species remain, widespread community composition changes were predicted.Main ConclusionsOur findings serve as baselines to inform, anticipate, and mitigate cascading consequences of shifts in seagrass ecosystems that provide essential services for humanity.