Long-Term Dynamic in Nutrients, Chlorophyll a, and Water Quality Parameters in a Coastal Lagoon During a Process of Eutrophication for Decades, a Sudden Break and a Relatively Rapid Recovery

Frontiers in Marine Science, Journal Year: 2019, Volume and Issue: 6

Published: Feb. 11, 2019

Coastal lagoons are among the marine habitats with highest biological productivity, and supports a great variety of human activities pressures that makes them especially vulnerable to trophic imbalances. While dystrophic crises common in many lagoons, others like Mar Menor show homeostatic mechanisms, high resilience clear waters. This paper analyses water column descriptors dynamic during last 22 years this lagoon, context eutrophication process produced by an increase nutrient inputs, mainly derived from agriculture. Despite nitrate loads, lagoon maintained two decades regulation, keeping transparency relatively low levels nutrients chlorophyll (Prebreak phase), followed sudden change state 2016 abrupt concentration loss (Break rapid recovery after reduction discharges (Recovery phase). The activation regulation mechanisms is manifested ammonium production, as consequence web activity. relationship between nutrients, at small spatio-temporal scales, disagrees traditional models, suggesting response primary producers inputs zooplankton control short-term, which turn controlled rest components. Homeostatic properties provide resistance deal based on several mechanisms: channelling its production towards benthic system (maintaining biomasses producers, filter feeders detritivores), top-down pelagic exerted ichthyoplankton jellyfish, exporting surplus outside system. Resilience would be turnover species composition related restricted connectivity sea, variability environmental conditions, multiplicity spatial-temporal scales involved processes. TRIX index was sensitive quality changes. However, our study, current score does not allow anticipate or alert risk breakpoint

Language: Английский

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Groundwater dependent ecosystems in coastal Mediterranean regions: Characterization, challenges and management for their protection

Water Research, Journal Year: 2020, Volume and Issue: 172, P. 115461 - 115461

Published: Jan. 2, 2020

Language: Английский

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On the Use of an IoT Integrated System for Water Quality Monitoring and Management in Wastewater Treatment Plants

Water, Journal Year: 2020, Volume and Issue: 12(4), P. 1096 - 1096

Published: April 12, 2020

The deteriorating water environment demands new approaches and technologies to achieve sustainable smart management of urban systems. Wireless sensor networks represent a promising technology for quality monitoring management. use wireless facilitates the improvement current centralized systems traditional manual methods, leading decentralized adaptable dynamic heterogeneous distribution infrastructure cities. However, there is need low-cost node solution on market that enables cost-effective deployment this generation This paper presents integration network preliminary validation in wastewater treatment plant scenario device close-to-market stage. consists nitrate nitrite analyzer based novel ion chromatography detection method. analytical integrated using an Internet Things software platform tested under real conditions. By doing so, system conceived developed accomplished. In presented scenario, such allows online near-real-time communication with several devices deployed multiple plants provides preventive data analytics mechanisms support decision making. results obtained comparing laboratory measured demonstrate reliability method implemented device.

Language: Английский

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A Synthesis: What Is the Future for Coasts, Estuaries, Deltas and Other Transitional Habitats in 2050 and Beyond?

Elsevier eBooks, Journal Year: 2019, Volume and Issue: unknown, P. 1 - 28

Published: Jan. 1, 2019

Language: Английский

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Biodiversity impacts by multiple anthropogenic stressors in Mediterranean coastal wetlands

The Science of The Total Environment, Journal Year: 2021, Volume and Issue: 818, P. 151712 - 151712

Published: Nov. 17, 2021

Mediterranean coastal wetlands are considered biodiversity hot-spots and contain a high number of endemic species. The these ecosystems is endangered by several pressures resulting from agricultural urban expansion, climate change, the alteration their hydrological cycle. In this study we assess state-of-the-art regarding impact stressor groups on (i.e., lagoons, marshes, estuaries). Particularly, describe impacts eutrophication, chemical pollution, invasive species, salinization, temperature rise, analyze existing literature multiple stressors ecosystems. Our denotes clear asymmetry both in terms areas evaluated. majority studies focus lagoons estuaries north-west parts basin, while African Asian coast have been less represented. Eutrophication pollution were most studied compared to others like rise or species invasions. Most evaluating individually show direct indirect effects primary producers invertebrate communities, changes dominance patterns that contribute decline populations. few available addressing interactions shown non-additive responses, which important define appropriate ecosystem management restoration measures. Finally, propose research needs advance our understanding anthropogenic guide future interventions protect biodiversity.

Language: Английский

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Microplastic pollution in water, sediments and commercial fish species from Ciénaga Grande de Santa Marta lagoon complex, Colombian Caribbean

The Science of The Total Environment, Journal Year: 2022, Volume and Issue: 829, P. 154643 - 154643

Published: March 16, 2022

Language: Английский

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Using Machine-Learning Algorithms for Eutrophication Modeling: Case Study of Mar Menor Lagoon (Spain)

International Journal of Environmental Research and Public Health, Journal Year: 2020, Volume and Issue: 17(4), P. 1189 - 1189

Published: Feb. 13, 2020

The Mar Menor is a hypersaline coastal lagoon with high environmental value and characteristic example of highly anthropized hydro-ecosystem located in the southeast Spain. An unprecedented eutrophication crisis 2016 2019 abrupt changes quality its waters caused great social alarm. Understanding modeling level indicator, such as chlorophyll-a (Chl-a), benefits management this complex system. In study, we investigate potential machine learning (ML) methods to predict Chl-a. Particularly, Multilayer Neural Networks (MLNNs) Support Vector Regressions (SVRs) are evaluated using target dataset information up nine different water parameters. most relevant input combinations were extracted wrapper feature selection which simplified structure model, resulting more accurate efficient procedure. Although performance validation phase showed that SVR models obtained better results than MLNNs, experimental indicated both ML algorithms provide satisfactory prediction Chl-a concentration, reaching 0.7 R2CV (cross-validated coefficient determination) for best-fit models.

Language: Английский

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Reviewing the Ecosystem Services, Societal Goods, and Benefits of Marine Protected Areas

Frontiers in Marine Science, Journal Year: 2021, Volume and Issue: 8

Published: June 1, 2021

Marine protected areas (MPAs) are globally important environmental management tools that provide protection from the effects of human exploitation and activities, supporting conservation marine biological diversity, habitats, ecosystems processes they host, as well resources in a broad sense. Consequently, also expected to manage enhance ecosystem services material, non-material, consumptive non-consumptive goods, benefits for humans. There is however certain confusion on what constitutes an service, it not always easy distinguish between them societal benefits. The main nuance service aptitude has or develops naturally consequence action, manifests through its own properties (productivity, stability, quality key parameters, etc.), while benefit economic other profitability (emotional, educational, scientific, etc.) humans obtain said quality. In this work, 268 publications, together with our experiences different investigations carried out MPAs part BiodivERsA3-2015-21 RESERVEBENEFIT European project, have been selected, reviewed discussed analyze knowledge status derived them, sometimes providing information their evidence, when exist. We define classify protection, elaborate conceptual model cause-effect relationships them.

Language: Английский

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A Review of Knowledge on the Impacts of Multiple Anthropogenic Pressures on the Soft-Bottom Benthic Ecosystem in Mediterranean Coastal Lagoons

Estuaries and Coasts, Journal Year: 2023, Volume and Issue: 46(8), P. 2190 - 2207

Published: March 21, 2023

Language: Английский

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Fifty years of ecological changes: Regime shifts and drivers in a coastal Mediterranean lagoon during oligotrophication

The Science of The Total Environment, Journal Year: 2020, Volume and Issue: 732, P. 139292 - 139292

Published: May 11, 2020

Language: Английский

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