Distinct interspecific and intraspecific vulnerability of coastal species to global change

Global Change Biology, Год журнала: 2021, Номер 27(15), С. 3415 - 3431

Опубликована: Апрель 27, 2021

Abstract Characterising and predicting species responses to anthropogenic global change is one of the key challenges in contemporary ecology conservation. The sensitivity marine climate increasingly being described with forecasted distributions, yet these rarely account for population level processes such as genomic variation local adaptation. This study compares inter‐ intraspecific patterns biological composition determine how vulnerability change, its environmental drivers, vary across populations. We compare trajectories three ecologically important southern African invertebrates at two time points future, both level, correlative distribution models, gradient forest models. Reported range shifts are species‐specific include predicted gains losses. Forecasted strongly influenced by changes a suite variables, from sea surface salinity temperature, minimum air temperature. Our results further suggest mismatch between future habitat suitability (where can remain their ecological niche) populations retain composition), highlighting variability species’ change. Overall, this demonstrates importance considering climatic when proactively managing coastal ecosystems Anthropocene.

Язык: Английский

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Implications of Large-Effect Loci for Conservation: A Review and Case Study with Pacific Salmon

Journal of Heredity, Год журнала: 2021, Номер 113(2), С. 121 - 144

Опубликована: Ноя. 7, 2021

The increasing feasibility of assembling large genomic datasets for non-model species presents both opportunities and challenges applied conservation management. A popular theme in recent studies is the search large-effect loci that explain substantial portions phenotypic variance a key trait(s). If such can be linked to adaptations, 2 important questions arise: 1) Should information from these used reconfigure units (CUs), even if this conflicts with overall patterns genetic differentiation? 2) How should viability assessments populations larger CUs? In review, we address context Chinook salmon steelhead (anadromous form rainbow trout) show strong associations between adult migration timing specific alleles one small region. Based on polygenic paradigm (most traits are controlled by many genes effect) data available at time showing early-migrating most closely related nearby late-migrating populations, differences Pacific were considered reflect diversity within CUs rather than separate CUs. Recent data, however, suggest required early migration, lost where conditions do not support phenotypes. Contrasting determinations under US Endangered Species Act State California's equivalent legislation illustrate complexities incorporating genomics into CU configuration decisions. Regardless how defined, consider phenotypes experience disproportionate risks across geographic areas, so it becomes identify serve as reliable sources valuable resources; architecture, especially existence loci, affect evolutionary potential adaptability.

Язык: Английский

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Global, regional, and cryptic population structure in a high gene-flow transatlantic fish

PLoS ONE, Год журнала: 2023, Номер 18(3), С. e0283351 - e0283351

Опубликована: Март 20, 2023

Lumpfish ( Cyclopterus lumpus ) is a transatlantic marine fish displaying large population sizes and high potential for dispersal gene-flow. These features are expected to result in weak structure. Here, we investigated genetic structure of lumpfish throughout its natural distribution the North Atlantic using two approaches: I) 4,393 genome wide SNPs 95 individuals from 10 locations, II) 139 discriminatory 1,669 40 locations. Both approaches identified extensive structuring with major split between East West distinct Baltic Sea population, as well further differentiation English Channel, Iceland, Greenland. The loci displayed ~2–5 times higher divergence than approach, revealing evidence local substructures. Isfjorden Svalbard were highly but resembled most Kattegat area transition zone, formed previously undescribed group. Also, subdivision was detected within America, Greenland, Barents Sea, Norway. Although have considerable gene-flow, observed levels suggests that this species may natal homing behavior populations adaptive differences. This fine-scale calls consideration when defining management units exploitation stocks decisions related sourcing moving cleaner use salmonid aquaculture.

Язык: Английский

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Landscape genomics of the American lobster (Homarus americanus)

Molecular Ecology, Год журнала: 2022, Номер 31(20), С. 5182 - 5200

Опубликована: Авг. 12, 2022

In marine species experiencing intense fishing pressures, knowledge of genetic structure and local adaptation represent a critical information to assist sustainable management. this study, we performed landscape genomics analysis in the American lobster investigate issues pertaining consequences making use putative adaptive loci reliably infer population thus more rigorously delineating biological management units exploited species. Toward end, genotyped 14,893 single nucleotide polymorphism (SNPs) 4190 lobsters sampled across 96 sampling sites distributed along 1000 km northwest Atlantic both Canada USA. As typical for most species, observed weak, albeit highly significant structure. We also found that variation allows detecting fine-scale not resolved by neutral alone. Using recent genome assembly lobster, were able map annotate several SNPs located functional genes potentially implicated processes such as thermal stress response, salinity tolerance growth metabolism pathways. Taken together, our study indicates weak high gene flow systems can be at various spatial scales, putatively substantially enhance delineation

Язык: Английский

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Charting a course for genetic diversity in the UN Decade of Ocean Science

Evolutionary Applications, Год журнала: 2021, Номер 14(6), С. 1497 - 1518

Опубликована: Март 13, 2021

Abstract The health of the world's oceans is intrinsically linked to biodiversity ecosystems they sustain. importance protecting and maintaining ocean has been affirmed through setting UN Sustainable Development Goal 14 conserve sustainably use for society's continuing needs. decade beginning 2021–2030 additionally declared as Decade Ocean Science Development. This program aims maximize benefits science management, conservation, sustainable development marine environment by facilitating communication cooperation at science–policy interface. A central principle conservation species ecosystem components biodiversity. However, a significant omission from draft version Implementation Plan acknowledgment monitoring genetic within species. In this paper, we emphasize diversity adaptive capacity, evolutionary potential, community function, resilience populations, well highlighting some major threats in direct human impacts effects global climate change. We then highlight significance diverse range socioeconomic factors environment, including industries, welfare leisure pursuits, coastal communities, wider society. Genetic ocean, its maintenance, discussed with respect integral role successful realization 2030 vision Science. Finally, suggest how might be better integrated into management practices continued interaction between environmental managers scientists, key leverage points industry requirements Blue Capital financing social responsibility.

Язык: Английский

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Spatial conservation planning of forest genetic resources in a Mediterranean multi-refugial area

Biological Conservation, Год журнала: 2024, Номер 293, С. 110599 - 110599

Опубликована: Апрель 26, 2024

The Kunming-Montreal Global Biodiversity Framework recognised the urgency of taking action to conserve intraspecific genetic diversity (IGD) as an insurance against habitat degradation and environmental change. Recent work suggests that 90–99 % IGD should be conserved safeguard viability future generations. Here, we addressed such a conservation issue in three forest tree species Italy: silver fir (Abies alba Mill.), Heldreich's pine (Pinus heldreichii H. Christ), pedunculate oak (Quercus robur L.). We used microsatellite markers measure 36 (A. alba), 15 (P. heldreichii) 25 (Q. robur) natural sites, including several putative glacial refugia. developed spatial planning (SCP) analysis quantify irreplaceability each site identify minimum set coverage ensuring protection. Finally, compared SCP results with contributions allelic within between total private richness. found 44 73 sites were required alleles, this effort held even when targeting lower percentages alleles protect (50–75 %). Glacial refugia often included coverage, confirming biogeographical expectations. high have higher richness on average. These are discussed light biogeographic history studied current policies for resources.

Язык: Английский

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Reef Adapt: A tool to inform climate-smart marine restoration and management decisions

Communications Biology, Год журнала: 2024, Номер 7(1)

Опубликована: Окт. 30, 2024

Язык: Английский

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Climate differently influences the genomic patterns of two sympatric marine fish species

Journal of Animal Ecology, Год журнала: 2021, Номер 91(6), С. 1180 - 1195

Опубликована: Окт. 30, 2021

Climate influences population genetic variation in marine species. Capturing these impacts remains challenging for fishes which disperse over large geographical scales spanning steep environmental gradients. It requires the extensive spatial sampling of individuals or populations, representative seascape heterogeneity, combined with a set highly informative molecular markers capable revealing climatic-associated variations. We explored how space, dispersal and environment shape genomic patterns two sympatric fish species Mediterranean Sea, ranks among oceanic basins most affected by climate change human pressure. hypothesized that structure climate-associated signatures selection would be stronger less mobile species, as restricted gene flow tends to facilitate fixation locally adapted alleles. To test our hypothesis, we genotyped contrasting abilities: white seabream Diplodus sargus striped red mullet Mullus surmuletus. collected 823 used genotyping sequencing (GBS) detect 8,206 single nucleotide polymorphisms (SNPs) 2,794 mullet. For each identified differentiated regions (i.e. outliers) disentangled relative contribution variables (climate, primary productivity) on outliers' prevalence local adaptation. observed adaptive between The showed distinct Alboran sea panmixia across Sea. revealed additional differentiation within Sea was significantly correlated summer winter temperatures, well productivity. Functional annotation outlier SNPs then candidate genes involved heat tolerance could examined further predict species' responses change. Our results illustrate key steps comparative genomics study aiming unravel evolutionary processes at play better anticipate their response Defining adaptation capacities niches can serve incorporate into conservation planning.

Язык: Английский

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Integration of genomic and ecological methods inform management of an undescribed, yet highly exploited, sardine species

Proceedings of the Royal Society B Biological Sciences, Год журнала: 2024, Номер 291(2018)

Опубликована: Март 6, 2024

Assessing genetic diversity within species is key for conservation strategies in the context of human-induced biotic changes. This important marine systems, where many remain undescribed while being overfished, and conflicts between resource-users agencies are common. Combining niche modelling with population genomics can contribute to resolving those by identifying management units understanding how past climatic cycles resulted current patterns diversity. We addressed these issues on an but already overexploited sardine genus Harengula . find that distribution determined salinity depth, a continuous along Brazilian mainland two disconnected oceanic archipelagos. Genomic data indicate such biogeographic barriers associated divergent intraspecific lineages. Changes habitat availability during last glacial cycle led different demographic histories among stocks. One coastal experienced 3.6-fold expansion, whereas island-associated contracted 3-fold, relative size ancestral population. Our results island should be managed separately from population, Marine Protected Area covering part support viability this lineage.

Язык: Английский

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Connectivity enhances resilience of marine forests after an extreme event

Scientific Reports, Год журнала: 2025, Номер 15(1)

Опубликована: Фев. 11, 2025

Abstract The resilience of populations to extreme climatic events comprises the resistance withstand and ability recover, which depends on factors such as remaining genetic diversity population connectivity. In 2011, a MHW caused 100 km range contraction kelp ( Ecklonia radiata ) off Western Australia, but recently recovering forests were discovered. To understand mechanisms recovery determine if are survivors or immigrants, we used genotyping-by-sequencing assess patterns We found that two three (PG1 2) likely whereas third smaller (PGCr 1) was produced through re-colonisation from nearby surviving forests. Connectivity high among migration analysis identified one (Horrocks) most important source for kelps. All had higher neutral diversity, similar putative adaptive surrounding populations, suggesting local adaptation. Our results elucidate how mixed processes can contribute forest following MHWs cryptic survival maintenance connectivity is key recovery.

Язык: Английский

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