Connectivity between coastal lagoons and sea: Asymmetrical effects on assemblages' and populations' structure

Pérez‐Ruzafa, Á.; Pascalis, Francesca De; Ghezzo, Michol; Quispe-Becerra, Jhoni Ismael; Hernández-García, Raquel; Muñoz, Irene; Vergara, Carlos; Pérez-Ruzafa, Isabel; Umgiesser, Georg; Marcos, Concepción

doi:10.1016/j.ecss.2018.02.031

Cited by 53 publications

(34 citation statements)

References 89 publications

(104 reference statements)

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“…This difference cannot be explained by an effect of dilution or export to the Mediterranean. The Mar Menor is a choked lagoon with a Water Renewal Time of 318 days (Umgiesser et al, 2014;Ghezzo et al, 2015;Pérez-Ruzafa et al, 2019a). Hydrodynamic models showed that in less than a year the Mar Menor waters would have reached 100% of the concentration contained in the Albujón watercourse waters, which during the Prebreak period represented el 50-60% of total discharges reaching the lagoon (Pérez-Ruzafa, 2010).…”

Section: Phases Of the Lagoon Eutrophication Process: Prebreak Breakmentioning

confidence: 99%

“…This, added to the particular lagoon homeostatic mechanisms showed by the Mar Menor, stopped the main consequences of the eutrophication process for more than 20 years. Such mechanisms are based on (1) a high spatio-temporal hydrographical and biological heterogeneity (Pérez-Ruzafa et al, 2005a, 2007, induced by a restricted connectivity with the Mediterranean sea (Pérez-Ruzafa, 2015;Pérez-Ruzafa et al, 2018, 2019a, (2) a high benthic micro and macrophytes production and filter feeders, scavengers, and detritivores biomass (Pérez-Ruzafa, 1989), and (3) the accumulation of excess production in the sediments or its export out of the system through fisheries and migratory species (Pérez-Ruzafa et al, 2018).…”

Section: Phases Of the Lagoon Eutrophication Process: Prebreak Breakmentioning

confidence: 99%

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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

et al. 2019

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Coastal lagoons are considered among the marine habitats with the highest biological productivity, and support a great variety of human activities and pressures that make them especially vulnerable to trophic imbalances. While dystrophic crises are common in many lagoons, others like the Mar Menor show homeostatic mechanisms, high resilience, and clear waters. This paper analyses the water column descriptors dynamic during the last 22 years in this coastal lagoon, in the context of a eutrophication process produced by an increase in nutrient inputs, mainly derived from agriculture. Despite water column nitrate concentration increased by one order of magnitude, the lagoon maintained homeostatic regulation for two decades, keeping the water transparency and relatively low levels of nutrients and chlorophyll a (Prebreak phase), followed by a sudden change of state in 2016 with an abrupt increase in average nutrients and chlorophyll a concentration and loss of water transparency (Break phase), and a relatively rapid recovery after the reduction of nutrient discharges (Recovery phase). The activation of the regulation mechanisms seems to manifest through an ammonium production in the water column, as a consequence of the activity in the trophic web. The low correlation between chlorophyll a and nutrients concentration, mainly at small spatio-temporal scales, is in disagreement with eutrophication traditional models, and suggests a rapid response of primary producers to nutrient inputs and a zooplankton control in the short-term, which in turn is controlled by the rest of the trophic web components. Homeostatic properties that in the Mar Menor lagoon have provided resistance to eutrophication are based on several mechanisms: channeling its production toward the benthic system (maintaining high biomasses of primary producers, filter feeders, and detritivores), a top-down control of the pelagic trophic web exerted by ichthyoplankton and jellyfish, and exporting surplus production outside

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Section: Phases Of the Lagoon Eutrophication Process: Prebreak Breakmentioning

confidence: 99%

Section: Phases Of the Lagoon Eutrophication Process: Prebreak Breakmentioning

confidence: 99%

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

et al. 2019

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“…In this sense, there is a threshold for the magnitude of these activities beyond which important environmental effects can be expected [25,26]. Additionally, the SHYFEM has been used to model environmental parameters such as salinity and temperature [26] as well as the connectivity between the Mar Menor lagoon and the Mediterranean using a Lagrangian model [27,28], so as for predicting the effects of climate change [29].The 3D numerical models need precise and updated initial conditions (Xo, Yo, Zo) to run them [1]. In all the cases, but mainly for applications in coastal zones, the applicability and usefulness of the results are highly dependent on the quality and spatial resolution of the bathymetric information and model grid setup, which determines not only the water column depth, but also information on bed roughness and the incorporation of specific structures and features that affect water and sediment transport dynamics.…”

mentioning

confidence: 99%

mentioning

confidence: 99%

Bathymetry Time Series Using High Spatial Resolution Satellite Images

Erena

Domínguez

Atenza

et al. 2020

Water

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The use of the new generation of remote sensors, such as echo sounders and Global Navigation Satellite System (GNSS) receivers with differential correction installed in a drone, allows the acquisition of high-precision data in areas of shallow water, as in the case of the channel of the Encañizadas in the Mar Menor lagoon. This high precision information is the first step to develop the methodology to monitor the bathymetry of the Mar Menor channels. The use of high spatial resolution satellite images is the solution for monitoring many hydrological changes and it is the basis of the three-dimensional (3D) numerical models used to study transport over time, environmental variability, and water ecosystem complexity.

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“…Este índice NDVI nos podría ayudar en un paso posterior a calcular las necesidades hídricas de los cítricos a regional (Jiménez-Bello, 2012) o para caracterizar e identificar las parcelas afectadas en una gran helada a escala regional (Erena et al, 2009). (Gilabert, 1992;García-Ayllón, 2017;Pérez-Ruzafa et al, 2018). Es un caso paradigmático de sistema que mantiene una elevada producción biológica (como demuestra su producción pesquera y las importantes colonias de aves que soporta) con una elevada biodiversidad y gran complejidad estructural (León et al, 2016).…”

Section: áRea De Estudio Del Campo De Cartagenaunclassified

Diseño de una Infraestructura de datos espaciales sobre agricultura y agua en la Región de Murcia-IDEarM: aplicación al Campo de Cartagena y el Mar Menor

Arrabal¹

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The integration of several sources of spatial datasets is relevant to develop of public services in all thematic domains. These services are provided and also used by all levels of the administration. Actually, the demand of these services is increasing among the managers of water to find more efficient solutions in the planning of water resources uses. To reach this aim, the integration of several huge geographical datasets from different sources and spatiotemporal resolutions is needed. At the present, the spatial information presents a relevant role in the decision-taking process in all levels of the administration, considering the 14/2010 Law, of 5th of July, about the infrastructures and geographical information services of Spain, the European INSPIRE Directive, or the executive law of USA President of 2002 that was one of the pioneer in this topic.However, the administrations usually have difficulties to integrate all the available geographical information for a same thematic and territory. The huge diversity of data models, the several specifications, and the different types of connectors used in the organizations with competences in the same territory, constitute barriers in the integration. To avoid these limitations, the organisms should be defined common norms, standard specifications and agreements for sharing and facilitating the interoperability of the spatial datasets among the several involved institutions. In base of these requirements, the Spatial Data Infrastructures (SDI) in different thematic domains, are increasing. The INSPIRE European Directive is providing a framework with several technological recommendations to avoid the problems of datasets integration from several sources. The SDIs include spatial datasets, user requirements, and access system by internet, norms and politics with the aim to facilitate the integration of several sources of spatial datasets. To reach the effective integration of spatial datasets, these should be characterized to allow the development of interoperable and efficient query services.The research strategy was designed to reach the following specific objectives: (i) to identify the barriers, both technological and others, that are avoiding an effective integration of several dataset within a regional thematic SDI about agriculture and water in the Murcia Region (IDEarM); (ii) to characterize the available datasets for both thematic (agriculture and water); to design a model dataset about these topics; (iv) to analyze the relevant components of interoperability tools for facilitating the implementation of INSPIRE European Directive; and finally (v) to develop the implementation of IDEarM as a tool to support the decision-taking process to characterize the citrus crops in the Campo of Cartagena area and the monitoring of water quality and bathymetry in the Mar Menor, the management of geographical information resources and the implementation of associated services with the integration of datasets considering the technological, institutional, political, legal an...

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Connectivity between coastal lagoons and sea: Asymmetrical effects on assemblages' and populations' structure

Cited by 53 publications

References 89 publications

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

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

Bathymetry Time Series Using High Spatial Resolution Satellite Images

Diseño de una Infraestructura de datos espaciales sobre agricultura y agua en la Región de Murcia-IDEarM: aplicación al Campo de Cartagena y el Mar Menor

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