Revisiting long‐distance dispersal in a coastal marine fish

Manel, Stéphanie; Boulanger, Emilie; Benestan, Laura; Mouillot, David; Dalongeville, Alicia

doi:10.1111/ecog.06867

Cited by 3 publications

(2 citation statements)

References 19 publications

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“…Seagrass and brown macroalgae dispersal stages comprise PD that can vary from hours to dozens of days 4,25,26 . This variability strongly influences oceanographic connectivity estimates, with short PDs limiting dispersal potential, while longer PDs potentially facilitating long-distance dispersal, and enabling species to expand their future ranges 1,25,27 . To incorporate this variability into the BM connectivity estimates, we compiled a database of empirically recorded PDs from the literature 4,19 .…”

Section: Methodsmentioning

confidence: 99%

Oceanographic connectivity strongly restricts future range expansions of critical ecosystem structuring species

Assis,

Legrand,

Fragkopoulou

et al. 2024

Preprint

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Climate change is anticipated to profoundly shift the distribution of marine biodiversity, yet the extent to which species can track suitable habitats remains unknown. In particular, oceanographic connectivity, the exchange of individuals mediated by ocean currents, can play a crucial role in dispersal and future range dynamics. Here, we integrate species distribution models and biophysical models to quantify the extent to which oceanographic connectivity can restrict future range expansions of marine forests of seagrasses and brown macroalgae under contrasting climate change scenarios. Our results show substantial range contractions for both groups, particularly under high emissions. Despite the potential for broad poleward range expansions that could partially offset range constrictions, oceanographic connectivity emerges as a major limiting factor, restricting potential expansion areas of newly suitable habitats by up to 8-fold for seagrasses and by 6.7-fold for brown macroalgae. These restrictions may push up to 90% of species into experiencing negative net habitat changes. Notably, connectivity barriers are well-defined at the global scale, and particularly strong in regions projected to hold extensive future suitable habitat, including the Okhotsk Sea, New Zealand, and the Arctic. Overall, our findings emphasize the need for conservation and management strategies that explicitly integrate both changing habitat suitability and oceanographic connectivity to provide the most accurate and actionable guidance for protecting marine forests in a changing climate.

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Section: Methodsmentioning

confidence: 99%

Oceanographic connectivity strongly restricts future range expansions of critical ecosystem structuring species

Assis,

Legrand,

Fragkopoulou

et al. 2024

Preprint

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show abstract

“…Oceanographic connectivity driven by ocean currents plays a crucial role in shaping the distribution of marine biodiversity. It mediates the extent to which populations exchange genes and individuals, from structuring sharp barriers to dispersal that isolate populations and foster biodiversity differentiation, to enabling long-distance dispersal events that underpin first settlements and the expansion of species’ distributional ranges 1–3 . Accordingly, oceanographic connectivity can facilitate the persistence of marine species in face of climate change by promoting recolonization events and improving resilience through the maintenance of genetic diversity and adaptive potential 4,5 .…”

Section: Introductionmentioning

confidence: 99%

Coastal oceanographic connectivity estimates at the global scale

Assis,

Legrand,

Fragkopoulou

et al. 2024

Preprint

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Oceanographic connectivity driven by ocean currents is critical in determining the distribution of marine biodiversity. It mediates the genetic and individual exchange between populations, from structuring dispersal barriers that promote long-term isolation to enabling long-distance dispersal that underpins species expansion and resilience against climate change. Despite its significance, comprehensive estimates of oceanographic connectivity on a global scale remain unavailable, while traditional approaches, often simplistic, fail to capture the complexity of oceanographic factors contributing to population connectivity. This gap hinders a deeper understating of species dispersal ecology, survival, and evolution, ultimately precluding the development of effective conservation strategies aimed at preserving marine biodiversity. To address this challenge, we present a comprehensive dataset of connectivity estimates along the world's coastlines, known for their rich marine biodiversity. These estimates are derived from a biophysical modelling framework that combines high-resolution ocean current data with graph theory to predict multi-generational stepping-stone connectivity. Alongside, we provide coastalNet, an R package designed to streamline access, analysis, and visualization of connectivity estimates. This tool enhances the utility and application of the data, adhering to the FAIR principles of Findability, Accessibility, Interoperability, and Reusability. The dataset and package set a new benchmark for research in oceanographic connectivity, allowing a better exploration of the complex dynamics of coastal marine ecosystems.

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Evaluating different approaches to integrate genome-wide genetic diversity in spatial conservation prioritization

Andrello,

Manel

2024

Biological Conservation

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Revisiting long‐distance dispersal in a coastal marine fish

Cited by 3 publications

References 19 publications

Oceanographic connectivity strongly restricts future range expansions of critical ecosystem structuring species

Oceanographic connectivity strongly restricts future range expansions of critical ecosystem structuring species

Coastal oceanographic connectivity estimates at the global scale

Evaluating different approaches to integrate genome-wide genetic diversity in spatial conservation prioritization

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