The challenge of assessing the proper functioning conditions of coastal lagoons to improve their future management

Erostate, Mélanie; Ghiotti, Stéphane; Huneau, Frédéric; Jouffroy, D.; Garel, Émilie; Garrido, Marie; Pasqualini, Vanina

doi:10.1016/j.scitotenv.2021.150052

Cited by 14 publications

(11 citation statements)

References 33 publications

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“…Due to its patrimonial biological and ecological interest, the Biguglia lagoon has been recognized as RAMSAR wetland conservation site since 1991 and is a Natural Reserve (Natural Reserve of the Biguglia Lagoon, RNEB) since 1994. It offers numerous ecosystem services of social and economic interest, like fish exploitation and provision of drinking water, as its aquifer (40 Mm 3 ) is the main source of drinking water for the urban area of Bastia (72,000 inhabitants) (Erostate et al, 2022). The lagoon is set in a highly urbanized context with growing population and increasing artificialization of its watershed and is subjected to regular management efforts under the Water Framework Directive (WFD).…”

Section: Study Sitementioning

confidence: 99%

“…The objective of "good status" imposed by the WFD has been postponed twice for the lagoon since 2010 (in 2015 and 2021) and is now set in 2027, indicating a need for the development of new and effective management strategies. The lagoon historically experienced major disturbances and alterations of its natural functioning and even underwent two major dystrophic crises in the past associated with low salinity conditions (in 1991 and2007;(Cecchi et al, 2016;Garrido et al, 2016;Pasqualini et al, 2017;Erostate et al, 2022). It is currently subjected to ongoing eutrophication, due to increasing urbanization and agricultural exploitation of its watershed, and alterations of its connectivity to the adjacent marine environment (Pasqualini et al, 2020;Erostate et al, 2022).…”

Section: Study Sitementioning

confidence: 99%

“…Moreover, during our 20-year study period, the first 10 years was rainier and colder, while the last few years was dryer and hotter, with impacts on the hydrological functioning of the lagoon. Due to its urban setting, the lagoon is exposed to increasing anthropic pressure, as urbanization has increased over fivefold during the last century (Pasqualini et al, 2020;Erostate et al, 2022). Historically, the lagoon experienced a wide range of environmental conditions and trophic states (Bec et al, 2011;Cecchi et al, 2016;Garrido et al, 2016;Pasqualini et al, 2017).…”

Section: Global Ecological Evolution Contextmentioning

confidence: 99%

“…Until the 1970s, the lagoon showed a good status, characterized by macrophytes dominance; then, it went through multiple statuses and sometimes experienced shifts to phytoplankton and opportunistic macroalgae dominance (Pasqualini et al, 2017;Erostate et al, 2022). The most remarkable event in the ecological history of the lagoon was the dystrophic crisis in 2007.…”

Section: Global Ecological Evolution Contextmentioning

confidence: 99%

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Long-term ecological trajectories of a disturbed Mediterranean coastal lagoon (Biguglia lagoon): Ecosystem-based approach and considering its resilience for conservation?

Ligorini

Garrido²,

Four

et al. 2022

Front. Mar. Sci.

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Coastal lagoons are subjected to ever-increasing direct or indirect anthropic pressures and are inexorably deteriorating with serious issues regarding their resilience. In this paper, we assessed the functioning and evolution of the highly disturbed Biguglia coastal lagoon (Mediterranean Sea, Corsica) through an ecosystem-based approach (EBA), using multiple biotic and abiotic proxies (hydro-climatic context and eutrophication), considering its connectivity to sea and watershed and biological compartments (macrophytes, phytoplankton, and invasive species) and taking into account human influence (management actions and fishing activities). The aim of this work is firstly to provide a comprehensive analysis of its long-term (2000–2021) ecological evolution trajectory and then, based on these results, to anticipate management strategies for supporting its conservation and restoration, and the maintenance of ecosystem services it offers. Results revealed that while the lagoon showed these days a good capacity to recover after disturbance and absorb change, it recently exhibited considerable changes in its phytoplankton community composition, developed an increased susceptibility to biological invasion, and experienced a drastic reduction in fish stocks. The major interannual variations of the mean salinity, strongly dependent on management interventions beyond natural climatic variability, summarized this instability. In the future, the lagoon may no longer be able to cope with even small disturbances, which could then be sufficient to reach a breakpoint and tip the system permanently into undesired/degraded states. We demonstrated that local and punctual management actions are not always beneficial for the entire ecosystem or even detrimental in some instances. Such a retrospective ecosystem-based approach is fundamental for producing the holistic insights required to implement efficient integrated ecosystem management. This further helps enhance lagoon resilience and hence preserve its ecosystem services in the context of increasing global changes. Such lessons are useful anywhere for comparable ecosystems.

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Section: Study Sitementioning

confidence: 99%

Section: Study Sitementioning

confidence: 99%

Section: Global Ecological Evolution Contextmentioning

confidence: 99%

Section: Global Ecological Evolution Contextmentioning

confidence: 99%

See 2 more Smart Citations

Long-term ecological trajectories of a disturbed Mediterranean coastal lagoon (Biguglia lagoon): Ecosystem-based approach and considering its resilience for conservation?

Ligorini

Garrido²,

Four

et al. 2022

Front. Mar. Sci.

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“…There remains a lack of whole‐of‐system understanding for GDEs across coastal catchments, limiting the ability to implement hydrosystem‐based management that considers landscape connectivity (Erostate et al, 2022). Connectivity principals have proved effective in the past.…”

Section: Future Directionsmentioning

confidence: 99%

Ecohydrology of coastal aquifers in humid environments and implications of a drying climate

Dyring

Hofmann

Stanton³

et al. 2022

Ecohydrology

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Coastal groundwater-dependent ecosystems (GDEs), such as wetlands, estuaries and mangrove forests, are globally important habitats that promote biodiversity, provide climate regulation and serve as refugia for plant and animal communities. However, global warming, coastal development and over-abstraction threaten the availability and quality of groundwater in coastal aquifers and, by extension, the ecohydrological function of dependent ecosystems. Because ecohydrological knowledge of coastal groundwater is disparate across disciplines and habitat types, we begin by summarising the physiochemical, biological and hydrological processes supported by groundwater across coastal watersheds. Groundwater makes a significant but poorly recognised contribution to the function and resilience of coastal ecosystems and will play an essential role in climate change mitigation and adaptation. This review then explores how critical ecosystem processes supported by groundwater will be affected in areas of the humid subtropics that are expected to be impacted by climatic drying. Where rainfall is predicted to decrease, reduced groundwater recharge will interrupt the hydrology of coastal GDEs, while anthropogenic pressures, such as land-use intensification and pollution, will diminish the quality of remaining groundwater. The challenges of managing groundwater for multiple purposes under climate change predictions are highlighted. To improve the management of coastal GDEs, research should be aimed at developing robust conceptual models of coastal groundwater systems that quantify biophysical linkages with ecological communities across relevant spatiotemporal scales.

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Assessment of Ecosystem Services Provided by Macrophytes in Southern Baltic and Southern Mediterranean Coastal Lagoons

Robbe,

Rogge,

Lesutienė

et al. 2024

Environmental Management

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The ecological importance of macrophytes is well known and reflected in nature protection law, for example, as a key biological quality element. However, the socio-economic role, such as the impact of macrophyte presence on recreational activities, is often overlooked. The purpose of this study was to assess the human benefits (or ecosystem services) provided by macrophytes. We developed a list of 25 macrophyte ecosystem services and 79 assessment indicators based on expert knowledge and literature data. First, hypothetical scenarios of coastal lagoons were developed to assess the impact of different ecological states (i.e., macrophyte coverage) and management measures (i.e., fisheries) on the ecosystem service provision. Scenario assessments were carried out by stakeholder workshops and literature search. Second, the ecosystem service potential of submerged and emergent macrophyte habitats were assessed by macrophyte experts and literature data. Results showed that cultural services are most important in terms of the overall actual provision of ecosystem services (scenario assessment) but also showing highest potential of the hypothetical ecosystem service provision (habitat assessment). Highest overall potential is shown for reeds and tall forb communities (83 out of maximum 125), followed by seagrass beds (71) and seaweed communities (61). Our ecosystem service assessment approaches (i.e., scenario and habitat-based) using socio-cultural data (i.e., stakeholders and experts-based) and biophysical data (i.e., indicators-based) can serve as supportive tools for coastal management and policy implementation visualizing the benefits of macrophytes to humans.

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The challenge of assessing the proper functioning conditions of coastal lagoons to improve their future management

Cited by 14 publications

References 33 publications

Long-term ecological trajectories of a disturbed Mediterranean coastal lagoon (Biguglia lagoon): Ecosystem-based approach and considering its resilience for conservation?

Long-term ecological trajectories of a disturbed Mediterranean coastal lagoon (Biguglia lagoon): Ecosystem-based approach and considering its resilience for conservation?

Ecohydrology of coastal aquifers in humid environments and implications of a drying climate

Assessment of Ecosystem Services Provided by Macrophytes in Southern Baltic and Southern Mediterranean Coastal Lagoons

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