Resilience dynamics and productivity‐driven shifts in the marine communities of the Western Mediterranean Sea

Hidalgo, Manuel; Vasilakopoulos, Paraskevas; García‐Ruíz, Cristina; Esteban, Antonio; López‐López, Lucía; García-Górriz, Elisa

doi:10.1111/1365-2656.13648

Cited by 15 publications

(6 citation statements)

References 44 publications

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“…Moreover, mechanisms such as strong winds, frontal and sub-mesoscale processes and the confluence of deep ocean convection in the close Gulf of Lion, which produce water mixing and fertilization in the northern coast, induce higher nutrient levels and a delayed strengthened bloom, creating a productive feeding ground for sardine [15,65]. The Rhone and Ebro riverine inputs in the Catalan Coast are advected by the Northern Currents and produce high values of nutrients and chlorophyll-a in the photic layers [65,66]. The sea temperature rise and extreme temperature phenomena (e.g., in summer 2022, the Catalan Coast registered the highest SST, with records of more than 28 • C) promoted by climate change, could influence the current dynamics and prolong the stratification period, leading to more oligotrophic waters [67]; it can be difficult for these to facilitate intensive feeding, to allow recovery after spawning.…”

Section: Discussionmentioning

confidence: 99%

Influence of Thermal Regimes on the Relationship between Parasitic Load and Body Condition in European Sardine along the Catalan Coast

Frigola‐Tepe

Caballero‐Huertas

Viñas

et al. 2022

Fishes

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The small pelagic European sardine presents high commercial and ecological values. Due to its cold-temperate water affinity, stocks are affected by global warming. Water temperature rise may change primary productivity patterns, negatively affecting fish condition and increasing parasite incidence. In this context, sardine health status was evaluated through the annual cycle on the Catalan Coast using thermal regimes comparison. Morphogravimetric parameters, sex and gonadal stages were assessed; infection by nematodes was characterised, and body condition was estimated by the Le Cren Factor and lipid content measured using a fish fat meter. Significant statistical differences were observed in spawning dynamics, body condition, and parasite infection between thermal regimes. Sardines from the colder north area had better condition and an earlier spawning, with lower parasite incidence (in terms of total prevalence, mean intensity and abundance) than those from the southern coast. Hysterothylacium spp. was the most abundant nematode, while Anisakis spp. prevalence was null in the two locations. Seasonal differences in nematode load were observed along the Catalan Coast, with lower prevalence during the summer and higher in winter-spring. Although previous studies have underestimated parasite influence on sardine health status, parasite abundance and sardine condition were negatively correlated. Seawater temperature and primary productivity are the proposed factors promoting differentiation in nematode infection and fish condition throughout the annual cycle and between locations.

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Section: Discussionmentioning

confidence: 99%

Influence of Thermal Regimes on the Relationship between Parasitic Load and Body Condition in European Sardine along the Catalan Coast

Frigola‐Tepe

Caballero‐Huertas

Viñas

et al. 2022

Fishes

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“…Subject to their ecological resilience, marine species have varied internal responses to changing ocean stressors that cause shifts in their patterns of productivity 1. Once the resilience of natural ecosystems diminishes, a sudden reorganisation of their components may take place 11. Complex ecosystem reorganisations also include the tendency of fish species to shift locations when conditions are no longer favourable 4…”

Section: Impacts Of Ocean Warming On Ecological Resilience Marine Foo...mentioning

confidence: 99%

“… 1 Once the resilience of natural ecosystems diminishes, a sudden reorganisation of their components may take place. 11 Complex ecosystem reorganisations also include the tendency of fish species to shift locations when conditions are no longer favourable. 4…”

Section: Impacts Of Ocean Warming On Ecological Resilience Marine Foo...mentioning

confidence: 99%

Charting the systemic and cascading impacts of climate change on marine food systems and human health

Teshome

2024

BMJ Glob Health

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“…If a discontinuous response is identified, the predicted lines of the optimal model represent the attractors and form the basis to estimate the position of the tipping points. Ecological resilience is then estimated based on how far each system state lies from both its attractor and its respective tipping point [27,[36][37][38][39]. This method has been applied across different marine ecosystems [27,36,38,40,41].…”

Section: Introductionmentioning

confidence: 99%

Resilience assessment in complex natural systems

Sguotti,

Vasilakopoulos,

Tzanatos

et al. 2024

Proc. R. Soc. B.

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Ecological resilience is the capability of an ecosystem to maintain the same structure and function and avoid crossing catastrophic tipping points (i.e. undergoing irreversible regime shifts). While fundamental for management, concrete ways to estimate and interpret resilience in real ecosystems are still lacking. Here, we develop an empirical approach to estimate resilience based on the stochastic cusp model derived from catastrophe theory. The cusp model models tipping points derived from a cusp bifurcation. We extend cusp in order to identify the presence of stable and unstable states in complex natural systems. Our Cusp Resilience Assessment (CUSPRA) has three characteristics: (i) it provides estimates on how likely a system is to cross a tipping point (in the form of a cusp bifurcation) characterized by hysteresis, (ii) it assesses resilience in relation to multiple external drivers and (iii) it produces straightforward results for ecosystem-based management. We validate our approach using simulated data and demonstrate its application using empirical time series of an Atlantic cod population and marine ecosystems in the North Sea and the Mediterranean Sea. We show that Cusp Resilience Assessment is a powerful method to empirically estimate resilience in support of a sustainable management of our constantly adapting ecosystems under global climate change.

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Resilience dynamics and productivity‐driven shifts in the marine communities of the Western Mediterranean Sea

Abstract: This is an open access article under the terms of the Creat ive Commo ns Attri bution License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited.

Cited by 15 publications

References 44 publications

Influence of Thermal Regimes on the Relationship between Parasitic Load and Body Condition in European Sardine along the Catalan Coast

Influence of Thermal Regimes on the Relationship between Parasitic Load and Body Condition in European Sardine along the Catalan Coast

Charting the systemic and cascading impacts of climate change on marine food systems and human health

Resilience assessment in complex natural systems

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