Quantification of land–sea nutrient fluxes supplied by allis shad across the species’ range

Poulet, Miss Camille; Barber-O'Malley, Betsy; Lassalle, Géraldine; Lambert, Patrick

doi:10.1139/cjfas-2021-0012

Cited by 3 publications

(1 citation statement)

References 68 publications

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“…Amphidromous fish migrate from one environment to another with a return migration at an earlier life stage first for feeding and then maturing and reproducing (Potter et al, 2015). Diadromous species are recognized as operating a crucial link between fresh waters and marine environments through nutrient flows (Poulet et al, 2022). Despite their ecological and socio-economical values, most of them are threatened or even close to extinction.…”

Section: Introductionmentioning

confidence: 99%

From the modeling of diadromous species’ marine distributions to the characterization of their current and future marine habitats

Navarro,

Janc,

Lassalle

et al. 2023

Front. Mar. Sci.

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IntroductionMany diadromous fish species are currently facing the threat of generalized population extirpations across their range, and conservation efforts implemented primarily within the continental domain may not be sufficient to ensure their viability. In consequence, better understanding the use of the marine environment by these species turned out to be critical.Material and methodWe developed marine species distribution models for two species, Allis shad (Alosa alosa) and the European flounder (Platichthys flesus), and proposed a way to interpret the habitat suitability from a more functional perspective. Our approach defined marine habitats as highly suitable environments that remained with a high potential through the species life stage duration at sea. First, a species-specific probabilistic threshold was applied to select for highly suitable environments each year of the simulations. Then, annual maps of high suitability were combined into recurrence maps showing areas were the environmental conditions remained the most suitable across the life at sea of the given species, these areas being called ‘marine habitats’. We applied this approach to study the current and future marine habitats of Allis shad and European flounder under climate change scenarios.ResultsThe main current marine habitats of these species were coastal, primarily in the Bay of Biscay for Allis shad and in the English Channel-North Sea for European flounder. These habitats are expected to experience minimal changes by mid-century, and the species may even benefit from new habitats at higher latitudes. However, the European flounder is likely to face greater challenges in the central part of its range by the end of the century, as potential spawning grounds may be threatened.DiscussionThis study provided a way to rethink ‘traditional’ suitability maps by integrating basic knowledge on the diadromous species life at sea. Our findings were part of a larger effort to link continental and marine habitats in improving management of diadromous species.

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Section: Introductionmentioning

confidence: 99%

From the modeling of diadromous species’ marine distributions to the characterization of their current and future marine habitats

Navarro,

Janc,

Lassalle

et al. 2023

Front. Mar. Sci.

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The decline of the ecosystem services generated by anadromous fish in the Iberian Peninsula

et al. 2023

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This work aims to present an historical review of the ecosystem services provided by anadromous fish (i.e., species that migrate from the sea to the river to spawn) throughout Human time, as well as of the main related threats, focusing on the Iberian Peninsula region. Anadromous fish provide important provision, cultural, regulatory and supporting ecosystem services across their distribution range and have been extensively exploited by humans since prehistoric times. In the Iberian Peninsula, sea lamprey, allis and twaite shads, sea trout, Atlantic salmon and European sturgeon were once abundantly present in several river basins covering what is now Portuguese and Spanish territory. These species have suffered a severe decline across their distribution range, mainly due to habitat loss and overexploitation. Considered regal delicacies, these fishes were once a statement on the tables of the highest social classes, a much appreciated bounty for the poorer population and are still an important part of the local gastronomy and economy. Such high economic and cultural interest encouraged intensive fishing. Currently, management efforts are being implemented, pairing habitat rehabilitation (e.g., construction of fish passes in obstacles to migration such as weirs and dams) with sustainable fisheries. Considering the present climate change scenario, these species are bound to endure increased pressures, demanding novel management approaches to ensure population numbers that are able to secure their sustainable exploitation.

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An evidence base of ecosystems services provided by diadromous fish in the European Atlantic Area

Ashley,

Murillas,

Muench

et al. 2023

Ecosystem Services

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Quantification of land–sea nutrient fluxes supplied by allis shad across the species’ range

Cited by 3 publications

References 68 publications

From the modeling of diadromous species’ marine distributions to the characterization of their current and future marine habitats

From the modeling of diadromous species’ marine distributions to the characterization of their current and future marine habitats

The decline of the ecosystem services generated by anadromous fish in the Iberian Peninsula

An evidence base of ecosystems services provided by diadromous fish in the European Atlantic Area

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