Effects of climate change and anthropogenic pressures in the water quality of a coastal lagoon (Ria Formosa, Portugal)

Rodrigues, Marta; Rosa, Alexandra; Cravo, Alexandra; Jacob, José; Fortunato, A. B.

doi:10.1016/j.scitotenv.2021.146311

Cited by 27 publications

(7 citation statements)

References 75 publications

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“…Hydrodynamic model applications are common for estuarine and coastal regions (e.g. [53] [54]) and require a set of inputs such as bathymetric and atmospheric data. Although bathymetric data are available at global and regional scales (e.g., GEBCO global ocean dataset 6 or EMODNet Digital Terrain Model for European Sea regions 7 ), these data are often limited at local scales and specific bathymetric surveys might be required for local applications.…”

Section: Evaluation Of the Proposed Methodologymentioning

confidence: 99%

Modeling LoRa Communications in Estuaries for IoT Environmental Monitoring Systems

et al. 2022

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Low-power wide-area networks are extending beyond the conventional terrestrial domain. Coastal zones, rivers, wetlands, among others, are nowadays common deployment settings for Internet-of-Things nodes where communication technologies such as LoRa are becoming popular. In this article, we investigate large-scale fading dynamics of LoRa line-of-sight links deployed over an estuary with characteristic intertidal zones, considering both shore-to-shore and shore-to-vessel communications. We propose a novel methodology for path loss prediction which captures i) spatial, ii) temporal and iii) physical features of the RF signal interaction with the environmental dynamics, integrating those features into the two-ray propagation model. To this purpose, we resort to precise hydrodynamic modeling of the estuary, including the specific terrain profile (bathymetry) at the reflection point. These aspects are key to accounting for a reflecting surface of varying altitude and permittivity as a function of the tide. Experimental measurements using LoRa devices operating in the 868~MHz band show major trends on the received signal power in agreement with the methodology's predictions.

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Section: Evaluation Of the Proposed Methodologymentioning

confidence: 99%

Modeling LoRa Communications in Estuaries for IoT Environmental Monitoring Systems

et al. 2022

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“…The rise in sea levels has threatened coastal estuaries, lagoons, wetlands and groundwater resources in the respective areas. From the above-cited literature, it is evident that, with the increase in the abundance of microplastics, heavy metals, xenobiotic compounds and other toxic substances in the sediment, the risk of those compounds entering the food chain is apparent [15]. The species richness, species diversity and habitat spatial structure of aquatic inhabitants have become vulnerable due to salinization.…”

Section: Anthropogenic Activities Levels Of Salinity and Ecological T...mentioning

confidence: 99%

Anthropization, Salinity and Oxidative Stress in Animals in the Coastal Zone

Bal

Paital

2023

Ecws-7 2023

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“…These relationships may also be useful to predict the effects of environmental variability in the RF lagoon. Considering the effects of warming on picophytoplankton in the RF lagoon [54,66], the influence of freshwater inputs on nutrient availability in the RF [42,47,120], and the effects of nutrient reduction on phytoplankton composition (e.g., [22,183]), the anticipated warming and rainfall reduction over southern Europe (see [184]), exacerbated in shallow confined lagoonal systems, may have profound effects on phytoplankton assemblages. These conditions have been reported to favor smaller and mixotrophic phytoplankton groups, eventually HAB-forming taxa, intensified microbial interactions, and less efficient food webs in coastal lagoonal systems [129,152,185].…”

Section: Iv-indian Oceanmentioning

confidence: 99%

Patterns and Predictors of Phytoplankton Assemblage Structure in a Coastal Lagoon: Species-Specific Analysis Needed to Disentangle Anthropogenic Pressures from Ocean Processes

Lima,

Barbosa,

Correia

et al. 2023

Water

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Phytoplankton are dominant primary producers and key indicators in aquatic ecosystems. Understanding the controlling factors on the structure of phytoplankton assemblages is fundamental, but particularly challenging at the land–ocean interface. To identify the patterns and predictors of phytoplankton assemblage structure in the Ria Formosa coastal lagoon (south Portugal), this study combined phytoplankton abundance along a transect between the discharge point of a wastewater treatment plant and a lagoon inlet, over two years, with physico-chemical, hydrographic, and meteo-oceanographic variables. Our study identified 147 operational taxonomic units (OTUs), and planktonic diatoms (60–74%) and cryptophyceans (17–25%) dominated the phytoplankton in terms of abundance. Despite strong lagoon hydrodynamics, and the lack of spatial differences in the phytoplankton abundance and most diversity metrics, the multivariate analysis revealed differences in the assemblage structure between stations (p < 0.001) and seasons (p < 0.01). Indicator analysis identified cryptophyceans as lagoon generalists, and 11 station-specific specialist OTUs, including Kryptoperidinium foliaceum and Oscillatoriales (innermost stations) and potentially toxigenic species (Pseudo-nitzschia and Dinophysis; outer lagoon station, p < 0.05). Water temperature, pH, and nutrients emerged as the variables that best explained the changes in the phytoplankton assemblage structure (p < 0.001). Our findings provide insight into the relevance of local anthropogenic and natural forcings on the phytoplankton assemblage structure and can be used to support the management of RF and other coastal lagoons.

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Effects of climate change and anthropogenic pressures in the water quality of a coastal lagoon (Ria Formosa, Portugal)

Cited by 27 publications

References 75 publications

Modeling LoRa Communications in Estuaries for IoT Environmental Monitoring Systems

Modeling LoRa Communications in Estuaries for IoT Environmental Monitoring Systems

Anthropization, Salinity and Oxidative Stress in Animals in the Coastal Zone

Patterns and Predictors of Phytoplankton Assemblage Structure in a Coastal Lagoon: Species-Specific Analysis Needed to Disentangle Anthropogenic Pressures from Ocean Processes

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