Coral‐bleaching responses to climate change across biological scales

Global Change Biology, Год журнала: 2022, Номер 28(14), С. 4229 - 4250

Опубликована: Апрель 27, 2022

Abstract The global impacts of climate change are evident in every marine ecosystem. On coral reefs, mass bleaching and mortality have emerged as ubiquitous responses to ocean warming, yet one the greatest challenges this epiphenomenon is linking information across scientific disciplines spatial temporal scales. Here we review some seminal recent coral‐bleaching discoveries from an ecological, physiological, molecular perspective. We also evaluate which data processes can improve predictive models provide a conceptual framework that integrates measurements biological Taking integrative approach scales, using for example hierarchical estimate major coral‐reef processes, will not only rapidly advance science but necessary guide decision‐making conservation efforts. To conserve encourage implementing mesoscale sanctuaries (thousands km 2 ) transcend national boundaries. Such networks protected reefs reef connectivity, through larval dispersal transverse thermal environments, genotypic repositories may become essential units selection environmentally diverse locations. Together, multinational be best chance corals persist change, while humanity struggles reduce emissions greenhouse gases net zero.

Язык: Английский

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Sardines at a junction: Seascape genomics reveals ecological and oceanographic drivers of variation in the NW Mediterranean Sea

Molecular Ecology, Год журнала: 2023, Номер 32(7), С. 1608 - 1628

Опубликована: Янв. 3, 2023

Abstract By evaluating genetic variation across the entire genome, one can address existing questions in a novel way while raising new ones. The latter includes how different local environments influence adaptive and neutral genomic within among populations, providing insights into adaptation of natural populations their responses to global change. Here, under seascape approach, ddRAD data 4609 single nucleotide polymorphisms (SNPs) from 398 sardines ( Sardina pilchardus ) collected 11 Mediterranean Atlantic site were generated. These used along with oceanographic ecological information detect signals divergence gene flow environmental gradients. studied constitute two clusters F ST = 0.07), pattern attributed outlier loci, highlighting putative adaptation. trend number days sea surface temperature above 19°C, critical threshold for successful sardine spawning, was crucial at all levels population structuring implications on species' key biological processes. Outliers link candidate SNPs region's heterogeneity. Our findings provide evidence dynamic equilibrium which structure is maintained by physical factors opposing influences migration selection. This system warrants continuous monitoring approach that might benefit temporal more detailed spatial dimension. results may contribute complementary studies aimed deeper mechanistic processes underlying structuring. Those are understanding predicting future changes this highly exploited species face climate

Язык: Английский

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Rolling with the punches: Organism-environment interactions shape spatial pattern of adaptive differentiation in the widespread mantis shrimp Oratosquilla oratoria

The Science of The Total Environment, Год журнала: 2024, Номер 917, С. 170244 - 170244

Опубликована: Янв. 24, 2024

Язык: Английский

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Comparative phylogeography in the genomic age: Opportunities and challenges

Journal of Biogeography, Год журнала: 2022, Номер 49(12), С. 2130 - 2144

Опубликована: Окт. 5, 2022

Abstract Aim We consider the opportunities and challenges comparative phylogeography (CP) faces in genomic age to determine: (1) how we can maximise potential of big CP analyses advance biogeographic macroevolutionary theory; (2) what can, will struggle, achieve using approaches this era genomics. Location World‐wide. Taxon All. Methods review literature discuss future ‐ particularly examining insights enabled by genomics that may not be possible for single species and/or few molecular markers. focus on geography species' natural histories interact yield congruent incongruent patterns neutral adaptive processes context both historical recent rapid evolution. also data are being stored, accessed, shared. Results With widespread availability data, shift from a single‐ multi‐locus perspective is resulting detailed inferences an improved statistical rigour phylogeography. However, time effort required collecting co‐distributed accruing species‐specific ecological knowledge continue limiting factors. Bioinformatic skills user‐friendly analytical tools, alongside computational infrastructure limiting. Main conclusions Over last ~35 years, there has been much progress understanding intraspecific genetic variation geographically distributed. The next major steps incorporate evolutionary community perspectives account responses among across temporal scales, including those related anthropogenic change. full only realised if employ robust study designs within sound framework. advocate phylogeographers adopt such consistent enhance comparisons present‐day findings.

Язык: Английский

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Restricted dispersal in a sea of gene flow

Proceedings of the Royal Society B Biological Sciences, Год журнала: 2021, Номер 288(1951), С. 20210458 - 20210458

Опубликована: Май 18, 2021

How far do marine larvae disperse in the ocean? Decades of population genetic studies have revealed generally low levels structure at large spatial scales (hundreds kilometres). Yet this result, typically based on discrete sampling designs, does not necessarily imply extensive dispersal. Here, we adopt a continuous strategy along 950 km coast northwestern Mediterranean Sea to address question four species. In line with expectations, observe weak scale. Nevertheless, our uncovers pattern isolation by distance small (few tens kilometres) two Individual-based simulations indicate that signal is an expected signature restricted At other extreme connectivity spectrum, pairs individuals are closely related genetically were found more than 290 apart, indicating long-distance Such combination dispersal rare events supported high-resolution biophysical model larval study area, and posit it may be common Our results bridge direct implications for design reserve networks.

Язык: Английский

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Seascape Genomics of Elacatinus punctiulatus (Ginsburg, 1938): Understanding the Historical and Contemporary Drivers of Population Structure in the Gulf of California

Molecular Ecology, Год журнала: 2025, Номер unknown

Опубликована: Янв. 31, 2025

The genomic diversity and population structure of marine species represents a complex mosaic shaped by historical contemporary environmental seascape features that maintain or alter it over time. Gulf California (GC) is an interior sea with dynamic history during its formation oceanographic complexity; hence, suitable system to test the effect factors on in species. We investigated redhead goby (Elacatinus puncticulatus; Ginsburg, 1938), cryptobenthic fish, gain insights into drivers shaping GC. A total 4802 SNPs markers were analysed, 3775 loci classified as neutral 27 outlier potentially under selection. Both demonstrated structure, showing two main groups corresponding northern southern locatities. identified additional genetic group emerging central area sampled localities. Genetic differentiation between North South regions demographic simulations was consistent ancient divergence (1.04 Mya) secondary contact (0.15 Mya). association analysis revealed possible adaptive scenario linked ocean temperature. study highlights importance events, factors, circulation E. puncticulatus populations

Язык: Английский

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Strong Environmental and Genome‐Wide Population Differentiation Underpins Adaptation and High Genomic Vulnerability in the Dominant Australian Kelp (Ecklonia radiata)

Ecology and Evolution, Год журнала: 2025, Номер 15(5)

Опубликована: Май 1, 2025

ABSTRACT Ongoing and predicted range loss of kelp forests in response to climatic stressors is pressing marine managers look into the adaptive capacity populations inform conservation strategies. Characterising how genetic diversity structure relate present future environmental variation represents an emerging approach quantifying vulnerability change identifying with genotypes that potentially confer advantage ocean conditions. The dominant Australian kelp, Ecklonia radiata , was genotyped from 10 locations spanning 2000 km coastline a 9.5°C average temperature gradient along east coast Australia, global warming hotspot. ddRAD sequencing generated 10,700 high‐quality single nucleotide polymorphisms (SNPs) characterized levels neutral genomic structure. dataset, reflecting portions genome putatively under selection, used infer by 2050 RCP 8.5 scenario. There strong differentiation between Australia mainland Tasmanian populations, but only weak among within main path East Current. Genetic highest center lowest warm‐edge population. SNP candidates revealed similar patterns, spread alleles across most warm (northern) populations. lowest, unique, values were found both cool population edges, suggesting local adaptation low evolutionary potential. Critically, modeling identified high conditions Populations at edges are unlikely adapt keep pace climate change. Ensuring persistence these forests, boosting resilience change, may require active management strategies assisted gene flow cool‐edge (Tasmania)

Язык: Английский

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Seascape Genomics of the Sugar Kelp Saccharina latissima along the North Eastern Atlantic Latitudinal Gradient

Genes, Год журнала: 2020, Номер 11(12), С. 1503 - 1503

Опубликована: Дек. 13, 2020

Temperature is one of the most important range-limiting factors for many seaweeds. Driven by recent climatic changes, rapid northward shifts species’ distribution ranges can potentially modify phylogeographic signature Last Glacial Maximum. We explored this question in detail cold-tolerant kelp species Saccharina latissima, using microsatellites and double digest restriction site-associated DNA sequencing ( ddRAD-seq) derived single nucleotide polymorphisms (SNPs) to analyze genetic diversity structure 11 sites spanning entire European Atlantic latitudinal range species. In addition, we checked statistical correlation between marker allele frequencies three environmental proxies (sea surface temperature, salinity, water turbidity). Our findings revealed that was significantly higher northernmost locality (Spitsbergen) compared southern ones (Northern Iberia), which discuss light current state knowledge on phylogeography S. latissima potential influence changes population Seven SNPs 12 microsatellite alleles were found be associated with at least variables. speculate putative adaptive functions genes outlier markers importance these successful conservation aquaculture strategies age global change.

Язык: Английский

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Reefscape Genomics: Leveraging Advances in 3D Imaging to Assess Fine-Scale Patterns of Genomic Variation on Coral Reefs

Frontiers in Marine Science, Год журнала: 2021, Номер 8

Опубликована: Июль 15, 2021

Coral reefs across the world are undergoing rapid deterioration, and understanding ecological evolutionary processes that govern these ecosystems is critical to our ability protect them. Molecular studies have been instrumental in advancing such understanding, while initially focused primarily on broad-scale patterns, they gradually uncovered prevalence of local genetic structuring. Genome-wide sequencing approaches provided new opportunities understand both neutral adaptive contributions this largely unexplained diversity, but fine-scale assessments hampered by challenges associated with aquatic environments, terms (geo)referencing, seafloor characterization, situ phenotyping. Here, we discuss potential “reefscape genomics,” leveraging recent advances underwater imaging enable spatially explicit genomic coral reefs. More specifically, consider how (close-range) photogrammetry (1) spatial mapping benthic target organisms, (2) repeatable characterization abiotic biotic reefscape, (3) simultaneous mass-phenotyping. The consideration data –combined detailed environmental phenotypic characterization– opens up opportunity for landscape (and other marine ecosystems). Such assessment spatio-temporal drivers extensive structuring cryptic diversity encountered invertebrates, as reef-building corals. Considering threats facing worldwide, believe reefscape genomics represents a promising advancement molecular toolkit help inform can most effectively conserve restore reef into future.

Язык: Английский

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Local adaptive variation in a highly migratory fish: The smooth hammerhead shark Sphyrna zygaena

Ecological Genetics and Genomics, Год журнала: 2024, Номер 31, С. 100233 - 100233

Опубликована: Фев. 22, 2024

Язык: Английский

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