Genetic diversity affects ecosystem functions across trophic levels as much as species diversity, but in an opposite direction

Published: Feb. 11, 2025

Understanding the relationships between biodiversity and ecosystem functioning stands as a cornerstone in ecological research. Extensive evidence now underscores profound impact of species loss on stability dynamics functions. However, it remains unclear whether genetic diversity within key yield similar consequences. Here, we delve into intricate relationship diversity, functions across three trophic levels —primary producers, primary consumers, secondary consumers— natural aquatic ecosystems. Our investigation involves estimating genome-wide -gauged pivotal species-within each level, evaluating seven functions, analyzing magnitude (BEFs). We found that, overall, absolute effect size mirrors that nonetheless unveil striking dichotomy: while was positively correlated with various displays negative correlation these These intriguing antagonist effects persists (underscoring its systemic nature), but were apparent only when BEFs assessed rather than them. This study reveals complexity predicting consequences under conditions, emphasizes need for further mechanistic models integrating two facets biodiversity.

Language: Английский

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Genetic diversity affects ecosystem functions across trophic levels as much as species diversity, but in an opposite direction

eLife, Journal Year: 2025, Volume and Issue: 13

Published: March 20, 2025

Understanding the relationships between biodiversity and ecosystem functioning stands as a cornerstone in ecological research. Extensive evidence now underscores profound impact of species loss on stability dynamics functions. However, it remains unclear whether genetic diversity within key yields similar consequences. Here, we delve into intricate relationship diversity, functions across three trophic levels – primary producers, consumers, secondary consumers natural aquatic ecosystems. Our investigation involves estimating genome-wide gauged pivotal each level, evaluating seven functions, analyzing magnitude (BEFs). We found that, overall, absolute effect size mirrors that nonetheless unveil striking dichotomy: while was positively correlated with various displays negative correlation these These intriguing antagonist effects persist (underscoring its systemic nature), but were apparent only when BEFs assessed rather than them. This study reveals complexity predicting consequences under conditions, emphasizes need for further mechanistic models integrating two facets biodiversity.

Language: Английский

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Clonal reproduction and hydrochory drive colony and population structure in a narrowly endemic and endangered emergent aquatic plant (Sagittaria fasciculata; Alismataceae)

Conservation Genetics, Journal Year: 2025, Volume and Issue: unknown

Published: March 21, 2025

Language: Английский

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

Evolutionary Applications, Journal Year: 2021, Volume and Issue: 14(6), P. 1497 - 1518

Published: March 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.

Language: Английский

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Small-scale population structuring results in differential susceptibility to pesticide exposure

Environmental Sciences Europe, Journal Year: 2022, Volume and Issue: 34(1)

Published: Nov. 24, 2022

Abstract Central European riverine networks are subject to widely varying local anthropogenic pressures, forcing species with limited dispersal abilities adapt or become locally extinct. Previous catchment-wide studies have shown that some invertebrates tend pronounced population structuring throughout mountainous river networks, raising the question of whether this also translates into small-scale phenotypic differentiation and adaptation stressors. One such is headwater crustacean Gammarus fossarum clade 11 (or lineage B), which we restudied in terms structure four years after first assessment. Our aim was not only document temporal stability/dynamics structure, but asked a genetic results different susceptibility commonly applied pesticide. Therefore, re-assessed based on COI haplotypes their frequencies, quantified key parameters related morphological life-history differentiation. Furthermore, examined difference sensitivity towards pyrethroid insecticide deltamethrin. haplotype patterns were found be stable over time confirmed within catchment, isolated populations connected downstream populations. While little observed, marked differences found. Populations from pristine sites responded significantly more tolerant than anthropogenically impacted sites—showing prior exposure spectrum stressors does automatically increase tolerance specific stressor. our study demonstrates capacity reflected variation disturbance. The system thus provides suitable experimental landscape test impact further (e.g., other novel entities, including pesticides modes action) Based these findings, important recommendations for protection intraspecific can developed.

Language: Английский

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Genetic diversity and population dynamics of wild Mozambique tilapia (Oreochromis mossambicus) in South Africa

Global Ecology and Conservation, Journal Year: 2024, Volume and Issue: 54, P. e03043 - e03043

Published: June 19, 2024

Urbanisation and water developments in South Africa have created numerous challenges managing resources. Consequently, the native fish species Oreochromis mossambicus, prominent to freshwater ecosystems now faces threat of extinction amidst introductions alien species. The has recently been classified as Vulnerable on IUCN Red List. Despite economic importance O. mossambicus within African region, little is known about genetic population dynamics In this study, we aimed establish baseline data, determine impact management practices structure. This data crucial for conservation monitoring across Africa. study revealed relatively low diversity sample localities but significant differentiation among populations. analyses identified 16 geographically correlated clusters, indicating substantial catchments. Anthropogenic activities, changes catchment use, strategies significantly influenced structure studied regions. Given distinct patterns, conservation-oriented should prioritise maintaining existing ensure long-term survival vulnerable

Language: Английский

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Along the river: Longitudinal patterns of functional and taxonomic diversity of plants in riparian forests

Journal of Vegetation Science, Journal Year: 2024, Volume and Issue: 35(1)

Published: Jan. 1, 2024

Abstract Questions The River Continuum Concept (RCC) predicts a gradual shift of functional adaptations organisms along the longitudinal (upstream–downstream) gradient, as well maximization biotic diversity in mid‐reaches. Although this theoretical framework was originally developed for stream macroinvertebrates, we tested whether such pattern can also be observed riparian plant communities. Location study conducted upper catchments San and Wisłoka Rivers southeastern Poland. In both catchments, very preserved forests occur continuously rivers. Methods We studied cover species across two river networks. analyzed taxonomic indices, community‐weighted means traits relation to plots' positions catchments. Results richness divergence displayed unimodal patterns increasing values were similar, but some plots lowest reaches more diverse than expected, forming an additional increase diversity. largely line with predictions RCC. discovered significant decrease specific leaf area height herbaceous plants communities gradient. There dispersal syndromes, toward higher importance zoochory lower reaches. Conclusions shows that natural show continuous turnover gradient that, abiotic factors, creates are known from predictions.

Language: Английский

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Population structure and insecticide response of Gammarus spp. in agricultural and upstream forested sites of small streams

Environmental Sciences Europe, Journal Year: 2023, Volume and Issue: 35(1)

Published: June 3, 2023

Abstract Exposure to pesticides may cause adaptation not only in agricultural pests and pathogens, but also non-target organisms. Previous studies mainly searched for adaptations organisms pesticide-polluted sites. However, propagate heritable pesticide effects, such as increased tolerance, non-exposed populations through gene flow. We examined the tolerance—as one of pre-assumptions local adaptation—of freshwater crustacean Gammarus spp. (at genus level reflecting gammarid community). The tolerance was quantified acute toxicity tests using insecticide imidacloprid. Gammarids were sampled at sites (termed agriculture), least impacted upstream refuge) transitional edge) six small streams south-west Germany. Furthermore, we population genetic structure fossarum energy reserves (here lipid content) G. well three site types (i.e. agriculture, edge refuge). found significantly lower imidacloprid from compared refuge sites, potentially due higher environmental stress indicated by a slightly content per mg tissue. no differences between populations, indicating propagation effects edges. among showed significant differentiation streams, within stream across types. suggest that high flow each hindered resulted similar (pre)adaptations levels types, although they exhibited different pollution. Further on target genes (e.g., conferring tolerance), fitness phenotypes particular are required adjacent pristine ecosystems detect potential propagations effects.

Language: Английский

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Genomic and species diversity patterns across multiple trophic levels in riverscapes

Oikos, Journal Year: 2023, Volume and Issue: 2023(9)

Published: June 15, 2023

Testing whether intra‐ and interspecific biodiversity facets co‐vary spatially across trophic levels is of utmost importance to generalize processes driving patterns in natural landscapes. Similar are expected act on diversity, which should lead positive co‐variation between genetic species diversity. Although this prediction has been verified within levels, it rarely tested multiple levels. To meet challenge, we focused a riverine freshwater ecosystem sampled (genomic diversity) (species data three levels: riparian trees, benthic macroinvertebrates fishes. For each level, quantified α‐ β‐diversity at both the (SNP diversity populations Alnus glutinosa , Gammarus sp. or Phoxinus dragarum ) communities). We first for global spatial facets. then relevant environmental parameters similarly affected estimate explained potential among components. did not evidence any facets, neither nor β‐diversity. found that sites situated Western part sampling area had higher α‐diversities, highly connected lower β‐diversities, holds true all Nonetheless, effects other predictors were specific component, likely explaining absence Our study demonstrates rivers can be hard rather idiosyncratic, even though few might have consistent impacts components

Language: Английский

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Movements of common bream Abramis brama in a highly connected, lowland wetland reveal sub‐populations with diverse migration strategies

Freshwater Biology, Journal Year: 2021, Volume and Issue: 66(7), P. 1410 - 1422

Published: May 19, 2021

Abstract Studies suggest the migratory behaviours of potamodromous fishes can be highly variable in barrier‐free systems, where differing movement types enable populations to exploit a wide range food and space resources. This intra‐population diversity spatial temporal resource use is important our ecological understanding fish distribution patterns population structure. Despite this, freshwater ecosystems are increasingly characterised by high levels fragmentation degradation that restrict mobile fauna, limit opportunities study natural, unconstrained behaviour. Common bream Abramis brama ( ) potentially strong model species for testing importance diverse migration lowland rivers, but existing studies have been largely restricted spatially confined and/or anthropogenically modified systems. study's principal focus was examine behaviour connected, system using passive acoustic telemetry, which provided continuous, multi‐year data on movements 181 across tidally influenced, wetland eastern England c . 60 km continuous river length plus numerous interconnected shallow lakes dykes). Tracked were grouped according their initial location timing tagging. Bream varied considerably between tagging groups, with greater consistency within groups. There little mixing groups outside spawning periods, season tidal phase being significant predictors movement. Rates swimming speeds highest spring, also generally occurring direction flows. For sampled just prior spawning, there considerable post‐spawning behaviour, some remaining immediate vicinity sampling others moved areas 25 away. These discrete remained until following period. results this comprised several distinct, semi‐independent subpopulations only share resources indicates connectivity systems enabling maintaining phenotypic fishes.

Language: Английский

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