Evolutionary Applications, Journal Year: 2022, Volume and Issue: 15(3), P. 459 - 470
Published: Feb. 15, 2022
Coastal Indigenous communities that rely on subsistence harvests are uniquely vulnerable to declines in nearshore species. The basket cockle
Language: Английский
Ocean Modelling, Journal Year: 2023, Volume and Issue: 183, P. 102181 - 102181
Published: Feb. 15, 2023
Biophysical models often require shelf-scale domains to map larval dispersal over several weeks, presenting a computational challenge. This can be overcome by decreasing model spatial resolution; however, nearshore processes, which potentially play significant role in dispersal, will inevitably unresolved. Here, we evaluate how simulated the is sensitive resolution. We use an unstructured, finite element, hydrodynamic of topographically-complex coastline North Wales, UK (which includes headlands, bays and channels) at four different scales (50, 100, 250, 500 m) compare influence resolution on transport patterns particles released within region (within 1 km shore). In higher (50 100 simulations, generally travelled offshore more quickly further (∼18%) than coarser (250 simulations. had important implications for potential connectivity along coast: lower retention near source sites was increased ∼50% and, whilst magnitude among discrete regions coast also (by ∼27%), number connected reduced ∼9%), compared with Our results, based case study highly energetic topographically complex region, suggest that ≤100 m should used studies zone. These findings add growing evidence importance using appropriately scaled when simulating material – out coastal zone, many applications, such as marine ecology, biosecurity, planning pollution.
Language: Английский
Citations
20
Evolutionary Applications, Journal Year: 2024, Volume and Issue: 17(3)
Published: March 1, 2024
Abstract Characterizing patterns of genetic connectivity in marine species is critical importance given the anthropogenic pressures placed on environment. For sessile species, population can be shaped by many processes, such as pelagic larval duration, oceanographic boundaries and currents. This study combines restriction‐site associated DNA sequencing (RADseq) passive particle dispersal modelling to delineate pink sea fan, Eunicella verrucosa , a temperate octocoral. Individuals were sampled from 20 sites covering most species' northeast Atlantic range, site northwest Mediterranean Sea inform across Atlantic‐Mediterranean transition. Using 7510 neutral SNPs, geographic cline clusters was detected, partitioning into Ireland, Britain, France, Spain (Atlantic), Portugal (Mediterranean). Evidence significant inbreeding detected at all sites, finding not previous this based microsatellite loci. Genetic characterized an isolation distance pattern (IBD) ( r 2 = 0.78, p < 0.001), which persisted Mediterranean‐Atlantic boundary. In contrast, exploration ancestral assignment using program ADMIXTURE indicated Bay Biscay, we suggest represents natural break possibly linked lack suitable habitat. As duration (PLD) unknown, simulations run for 14 21 days. both modelled PLDs, inter‐annual variations trajectories suggested that long‐lived, range‐wide IBD driven rare, longer events act maintain gene flow. These results may facilitate stepping‐stone E. highlight oceanography breaks range should considered designation ecologically coherent MPA networks.
Language: Английский
Citations
7
Limnology and Oceanography, Journal Year: 2021, Volume and Issue: 67(S2)
Published: Nov. 1, 2021
Abstract Kelp forests are highly productive coastal habitats and emerging as important sources of organic matter for other ecosystems. Although their high rates productivity detritus release expected to lead substantial export carbon, few studies have actually quantified or the persistence detritus. We addressed this in eight subtidal kelp ( Laminaria hyperborea ) spanning length (9° latitude) United Kingdom. Specifically, we production, retention/export from source adjacent habitats, situ decomposition rates. Detritus released via both dislodgment whole plants “May cast” shedding old growth was variable between sites with greatest values recorded our colder, northern sites. This attributable greater plant size biomass regions, rather than density dislodgement On average, annual production 4706 ± 700 g FW m −2 yr −1 301 C . Low retention within forest sedimentary indicated very (> 98% across study). A litterbag experiment showed may take > 4 months decompose, suggesting great potential long distance transport. Overall, findings suggest that L. large amounts subsidies range, which can potentially shape structure distant benthic communities constitute a relevant largely overlooked flux carbon cycle, represent an component natural sequestration.
Language: Английский
Citations
40
Evolutionary Applications, Journal Year: 2020, Volume and Issue: 13(8), P. 1854 - 1867
Published: Feb. 10, 2020
Population dynamics of marine species that are sessile as adults driven by oceanographic dispersal larvae from spawning to nursery grounds. This is mediated life-history traits such the timing and frequency spawning, larval behaviour duration, settlement success. Here, we use 1725 single nucleotide polymorphisms (SNPs) study fine-scale spatial genetic structure in commercially important cockle
Language: Английский
Citations
39
Ecology and Evolution, Journal Year: 2025, Volume and Issue: 15(1)
Published: Jan. 1, 2025
ABSTRACT Many sharks, rays and skates are highly threatened vulnerable to overexploitation, as such reliable monitoring of elasmobranchs is key effective management conservation. The mobile elusive nature these species makes challenging, particularly in temperate waters with low visibility. Environmental DNA (eDNA) methods present an opportunity study the absence visual identification or invasive techniques. However, eDNA data alone can be difficult interpret for monitoring, a marine setting where its distribution influenced by water currents. In this study, we investigated spatial temporal elasmobranch two Special Areas Conservation (SAC) off coast Wales. We took monthly samples 1 year (starting September 2020 March 2022 northern southern SACs, respectively), used metabarcoding reveal presence species. combined hydrodynamic modelling particle tracking simulate potential origins detected eDNA. 11 species, including critically endangered angelshark ( Squatina squatina ) tope Galeorhinus galeus ). Most detections were spring fewest autumn. simulations predicted that was shed, on average, approximately 7 km 15 (in respectively) from sampling stations at which it detected. These results show SACs represent important areas United Kingdom demonstrate new frontier
Language: Английский
Citations
0
Ecology and Evolution, Journal Year: 2025, Volume and Issue: 15(2)
Published: Feb. 1, 2025
ABSTRACT Seascape genomics facilitates integrative research on eco‐evolutionary forces, such as migration and natural selection, which shape genomic connectivity structure provide critical insights for conservation strategies. The green abalone ( Haliotis fulgens ) is distributed from California, United States, to Baja California Sur, Mexico, exposed a latitudinal environmental gradient in the Current System. This study aimed investigate population potential local adaptations of across its distribution. exhibits distinctive neutral genetic structuring influenced by geographic distance marine currents rather than adaptations. Analyses using 9100 17 outlier SNPs revealed three distinct populations: North group (California Ensenada, California), Guadalupe Island, South (coastal locations peninsula). underscores significance life history traits larval dispersal shaping connectivity. Connectivity appears be structure, overshadowing selection's role. Furthermore, no genome–environment associations sea surface temperature values were found. Future should integrate data with ocean circulation modeling better understand mechanisms outcomes emphasizes importance both binational (USA‐Mexico) efforts, suggesting development SNP marker panels traceability management. Collaborative strategies could serve models initiatives other ecoregions, promoting sustainable management populations exploited species national borders.
Language: Английский
Citations
0
BMC Evolutionary Biology, Journal Year: 2020, Volume and Issue: 20(1)
Published: Sept. 16, 2020
Abstract Background As global change and anthropogenic pressures continue to increase, conservation management increasingly needs consider species’ potential adapt novel environmental conditions. Therefore, it is imperative characterise the main selective forces acting on ecosystems, how these may influence evolutionary of populations species. Using a multi-model seascape genomics approach, we compare putative drivers selection in three sympatric southern African marine invertebrates with contrasting ecology life histories: Cape urchin ( Parechinus angulosus ), Common shore crab Cyclograpsus punctatu s), Granular limpet Scutellastra granularis ). Results pooled (Pool-seq), restriction-site associated DNA sequencing (RAD-seq), seven outlier detection methods, genomic variation between along strong biogeographical gradient. Of species, only S. showed significant isolation-by-distance, isolation-by-environment driven by sea surface temperatures (SST). In contrast, salinity (SSS) range air temperature correlated more strongly C. punctatus P. . Differences were also found structuring loci contributing two clusters East West Coasts for , but not Conclusion The findings illustrate distinct across suggesting that species-specific habitat requirements responses stresses be better predictors patterns than gradients within region. We large discrepancies methodologies, thus offer approach identifying principal Overall, this work highlights adding comparative (both multiple models species) can elucidate intricate ecosystems change.
Language: Английский
Citations
26
Frontiers in Marine Science, Journal Year: 2021, Volume and Issue: 8
Published: June 2, 2021
Dispersal is a central process that affects population growth, gene flow, and ultimately species persistence. Here we investigate the extent to which flow occurs between fragmented populations of deep-water brown algae Ericaria zosteroides (Turner) Greville (Sargassaceae, Fucales). These investigations were performed at different spatial scales from bay Marseille (western Provence) Corsica. As dispersal zygotes shown be limited over distances beyond few meters, used multidisciplinary approach, based on Lagrangian modeling genomics test hypothesis drifting fertile parts thallus (eggs branches), mediated by ocean currents, enable occasional populations. Therefore assessed respective contribution oceanographic connectivity, geographical isolation, seawater temperatures genetic structure this species. The was using 10,755 neutral SNPs 12 outlier genotyped dd-RAD sequencing in 261 individuals E. . We find connectivity best predictor structure, while differentiation can explained depth populations, as emphasized minimum temperature predictor. However, further will necessary for clarifying how drives adaptive Our analyses revealed local hydrodynamic conditions are correlated with very high divergence one Bay Marseille. Overall, levels certainly not sufficient counteract drift, but enough allow colonization several kilometers away. This study stresses need consider secondary mechanisms presumed low marine improve inference connectivity.
Language: Английский
Citations
19
Evolutionary Applications, Journal Year: 2021, Volume and Issue: 15(2), P. 262 - 285
Published: Dec. 28, 2021
Knowledge on correlations between environmental factors and genome divergence populations of marine species is crucial for sustainable management fisheries wild populations. The edible cockle (
Language: Английский
Citations
19
Heredity, Journal Year: 2023, Volume and Issue: 131(4), P. 292 - 305
Published: Aug. 18, 2023
Language: Английский
Citations
8