Fishing for fish environmental DNA: Ecological applications, methodological considerations, surveying designs, and ways forward

Molecular Ecology, Год журнала: 2022, Номер 31(20), С. 5132 - 5164

Опубликована: Авг. 16, 2022

Abstract Vast global declines of freshwater and marine fish diversity population abundance pose serious threats to both ecosystem sustainability human livelihoods. Environmental DNA (eDNA)‐based biomonitoring provides robust, efficient, cost‐effective assessment species occurrences trends in diverse aquatic environments. Thus, it holds great potential for improving conventional surveillance frameworks facilitate conservation fisheries management. However, the many technical considerations rapid developments underway eDNA arena can overwhelm researchers practitioners new field. Here, we systematically analysed 416 studies summarize research terms investigated targets, aims, study systems, reviewed applications, rationales, methodological considerations, limitations methods with an emphasis on research. We highlighted how technology may advance our knowledge behaviour, distributions, genetics, community structures, ecological interactions. also synthesized current several important concerns, including qualitative quantitative power has recover biodiversity abundance, spatial temporal representations respect its sources. To applications implementing techniques, recent literature was summarized generate guidelines effective sampling lentic, lotic, habitats. Finally, identified gaps limitations, pointed out newly emerging avenues eDNA. As optimization standardization improve, should revolutionize monitoring promote management that transcends geographic boundaries.

Язык: Английский

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Cross-basin and cross-taxa patterns of marine community tropicalization and deborealization in warming European seas

Nature Communications, Год журнала: 2024, Номер 15(1)

Опубликована: Март 8, 2024

Abstract Ocean warming and acidification, decreases in dissolved oxygen concentrations, changes primary production are causing an unprecedented global redistribution of marine life. The identification underlying ecological processes underpinning species turnover, particularly the prevalence increases warm-water or declines cold-water species, has been recently debated context ocean warming. Here, we track mean thermal affinity communities across European seas by calculating Community Temperature Index for 65 biodiversity time series collected over four decades containing 1,817 from different (zooplankton, coastal benthos, pelagic demersal invertebrates fish). We show that most sites have clearly responded to ongoing via abundance (tropicalization, 54%) (deborealization, 18%). Tropicalization dominated Atlantic compared semi-enclosed basins such as Mediterranean Baltic Seas, probably due physical barrier constraints connectivity colonization. Semi-enclosed appeared be vulnerable warming, experiencing fastest rates loss through deborealization.

Язык: Английский

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Temperature change effects on marine fish range shifts: A meta‐analysis of ecological and methodological predictors

Global Change Biology, Год журнала: 2023, Номер 29(16), С. 4459 - 4479

Опубликована: Май 30, 2023

Abstract The current effects of global warming on marine ecosystems are predicted to increase, with species responding by changing their spatial distributions. Marine ectotherms such as fish experience elevated distribution shifts, temperature plays a key role in physiological functions and delineating population ranges through thermal constraints. Distributional response predictions necessary for management have been complicated high heterogeneity magnitude direction movements, which may be explained both biological well methodological study differences. To date, however, there has no comprehensive synthesis the interacting ecological factors influencing distributions climate change confounding that can affect estimation. In this we analyzed published studies meeting criteria reporting range shift responses 115 taxa spanning all major oceanic regions, totaling 595 three‐dimensional (latitudinal, longitudinal, depth), identified significant driver. We found latitudinal shifts were fastest non‐exploited, tropical populations, inversely correlated depth which, turn, dominated at trailing edges ranges. While poleward increased rate latitude, niche was factor predicting (18% variation) (13%), predictors explaining between 10% 28% observed variance change. Finally, strong geographical publication bias limited taxonomical scope, highlighting need more representative standardized research order address improve face climate.

Язык: Английский

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Marine heatwaves are not a dominant driver of change in demersal fishes

Nature, Год журнала: 2023, Номер 621(7978), С. 324 - 329

Опубликована: Авг. 30, 2023

Язык: Английский

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The effects of climate change on the ecology of fishes

PLOS Climate, Год журнала: 2023, Номер 2(8), С. e0000258 - e0000258

Опубликована: Авг. 7, 2023

Ocean warming and acidification are set to reshuffle life on Earth alter ecological processes that underpin the biodiversity, health, productivity, resilience of ecosystems. Fishes contribute significantly marine, estuarine, freshwater species diversity functioning marine ecosystems, not immune climate change impacts. Whilst considerable effort has been placed studying effects fishes, much emphasis their (eco)physiology at organismal level. affected by through impacts various levels biological organisation a large variety traits, making it difficult make generalisations regarding fish responses change. Here, we briefly review current state knowledge fishes across wide range subfields ecology evaluate these scales (from genes ecosystems). We argue more holistic synthesis interconnected integration different needed for better understanding how populations communities might respond or adapt multi-stressor postulate studies using natural analogues change, meta-analyses, advanced integrative modelling approaches, lessons learned from past extreme events could help reveal some general patterns valuable management conservation approaches. many underlying mechanisms responsible observed biodiversity community insights useful create adaptation strategies preservation in rapidly changing ocean.

Язык: Английский

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FISHGLOB_data: an integrated dataset of fish biodiversity sampled with scientific bottom-trawl surveys

Scientific Data, Год журнала: 2024, Номер 11(1)

Опубликована: Янв. 4, 2024

Scientific bottom-trawl surveys are ecological observation programs conducted along continental shelves and slopes of seas oceans that sample marine communities associated with the seafloor. These report taxa occurrence, abundance and/or weight in space time, contribute to fisheries management as well population biodiversity research. Bottom-trawl all over world represent a unique opportunity understand ocean biogeography, macroecology, global change. However, combining these data together for cross-ecosystem analyses remains challenging. Here, we present an integrated dataset 29 publicly available national waters 18 countries standardized pre-processed, covering total 2,170 sampled fish 216,548 hauls collected from 1963 2021. We describe processing steps create dataset, flags, standardization methods developed assist users conducting spatio-temporal stable regional survey footprints. The aim this is support research, conservation, context

Язык: Английский

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Warming underpins community turnover in temperate freshwater and terrestrial communities

Nature Communications, Год журнала: 2024, Номер 15(1)

Опубликована: Март 1, 2024

Abstract Rising temperatures are leading to increased prevalence of warm-affinity species in ecosystems, known as thermophilisation. However, factors influencing variation thermophilisation rates among taxa and particularly freshwater communities with high diversity population decline, remain unclear. We analysed compositional change over time 7123 6201 terrestrial, mostly temperate from multiple taxonomic groups. Overall, temperature was positively linked both realms. Extirpated had lower thermal affinities terrestrial but higher compared those persisting time. Temperature change’s impact on varied community body size, niche breadth, richness baseline temperature; these interactive effects were idiosyncratic the direction magnitude their impacts thermophilisation, across realms While our findings emphasise challenges predicting consequences communities, conservation strategies should consider variable responses when attempting mitigate climate-induced biodiversity loss.

Язык: Английский

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The ecological and evolutionary consequences of tropicalisation

Trends in Ecology & Evolution, Год журнала: 2023, Номер 39(3), С. 267 - 279

Опубликована: Ноя. 28, 2023

Tropicalisation is a marine phenomenon arising from contemporary climate change, and characterised by the range expansion of tropical/subtropical species retraction temperate species. occurs globally can be detected in both tropical/temperate transition zones regions. The ecological consequences tropicalisation single-species impacts (e.g., altered behaviour) to whole ecosystem changes phase shifts intertidal subtidal habitats). Our understanding evolutionary limited, but emerging evidence suggests that could induce phenotypic change as well genotypic composition expanding retracting Given rapid rate research on focusing functioning, biodiversity socioeconomic urgently needed.

Язык: Английский

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Quantifying the ecological consequences of climate change in coastal ecosystems

Cambridge Prisms Coastal Futures, Год журнала: 2023, Номер 1

Опубликована: Янв. 1, 2023

Abstract Few coastal ecosystems remain untouched by direct human activities, and none are unimpacted anthropogenic climate change. These drivers interact with exacerbate each other in complex ways, yielding a mosaic of ecological consequences that range from adaptive responses, such as geographic shifts changes phenology, to severe impacts, mass mortalities, regime loss biodiversity. Identifying the role change these phenomena requires corroborating evidence multiple lines evidence, including laboratory experiments, field observations, numerical models palaeorecords. Yet few studies can confidently quantify magnitude effect attributable solely change, because seldom acts alone ecosystems. Projections future risk further complicated scenario uncertainty – is, our lack knowledge about degree which humanity will mitigate greenhouse-gas emissions, or make ways we impact Irrespective, ocean warming would be impossible reverse before end century, sea levels likely continue rise for centuries elevated millennia. Therefore, risks projected mirror impacts already observed, severity escalating cumulative emissions. Promising avenues progress beyond qualitative assessments include collaborative modelling initiatives, model intercomparison projects, use broader systems. But reduce rapidly reducing emissions greenhouse gases, restoring damaged habitats, regulating non-climate stressors using climate-smart conservation actions, implementing inclusive coastal-zone management approaches, especially those involving nature-based solutions.

Язык: Английский

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The thermal journey of macroalgae: Four decades of temperature-induced changes in the southeastern Bay of Biscay

Marine Environmental Research, Год журнала: 2024, Номер 195, С. 106351 - 106351

Опубликована: Янв. 11, 2024

Global warming is triggering significant shifts in temperate macroalgal communities worldwide, favoring small, warm-affinity species over large canopy-forming, cold-affinity species. The Cantabrian Sea, a region acutely impacted by climate change, also witnessing this shift. This study delved into the impacts of increasing sea surface temperature on subtidal southeastern Bay Biscay last four decades, using data from years 1982, 2007, 2014, and 2020. We found that has shaped community structure, with steadily displacing their counterparts. Notably, new exhibited profusion smaller algal species, explaining observed increased biodiversity within area. In period investigated (2014–2020), we partial recovery communities, coinciding cooler temperatures. Shallow were more reactive to variations than deeper possibly associated higher exposure Our offered insights intricate relationship between changes ocean Biscay, shedding light ongoing ecological region.

Язык: Английский

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