Disentangling structural and functional responses of native versus alien communities by canonical ordination analyses and variation partitioning with multiple matrices

Scientific Reports, Год журнала: 2022, Номер 12(1)

Опубликована: Июль 27, 2022

Abstract Freshwaters are under accelerated human pressure, and mollusk communities among its most sensitive, threatened, valuable components. To the best of our knowledge, overall effects damming, environment, space, time, invasive alien species, on structural functional responses native were not yet compared. Using historical information recent data from a river, we aimed to investigate disentangle these evaluate differences in natives invasives same predictors. Variation partitioning showed that species as important predictors environmental factors time explaining composition freshwater communities. Aliens more independent conditions than responded different drivers, partially their invasion success. The increased abundance some gastropods was positively related taxonomic diversity, while certain bivalves negatively associated with diversity We introduce cumulative variation multiple response (native alien) predictor matrices, along diagram show relations, advocating for conceptual shift future community ecology, “variables matrices” “multivariate analyses multi-matrix statistical modeling”.

Язык: Английский

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An abundant future for quagga mussels in deep European lakes

Environmental Research Letters, Год журнала: 2023, Номер 18(12), С. 124008 - 124008

Опубликована: Ноя. 7, 2023

Abstract Quagga mussels have expanded their range across the northern hemisphere in recent decades owing to dispersal abilities, prolific reproduction rates, and broad ecological tolerances. Their remarkable capacity filter particulates from water column has had profound effects on inland aquatic ecosystems. In North American Great Lakes, quagga mussel populations increased inexorably since late 1980’s, but it remains unclear whether will follow a similar trajectory Europe where they appeared more recently. Here we apply knowledge long-term population monitoring effort lakes predict future deep European lakes, quaggas are quickly becoming conspicuous part of underwater landscape. We that biomass Lakes Biel, Constance, Geneva may increase by factor 9–20 2045. Like America, this be characterized shift larger individuals deeper depths as matures. If realized, rapid expansion would likely drive largest ecosystem change eutrophication period mid-20th century.

Язык: Английский

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Telecoupling lens for integrating ecological and human dimensions of the biological invasion problem

Sustainability Science, Год журнала: 2024, Номер 19(4), С. 1139 - 1154

Опубликована: Март 18, 2024

Язык: Английский

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From ecological menace to roadside attraction: 28 years of evidence support successful biocontrol of purple loosestrife

Ecosphere, Год журнала: 2024, Номер 15(12)

Опубликована: Дек. 1, 2024

Abstract Introduction and spread of non‐native plants provide ecologists evolutionary biologists with abundant scientific opportunities. However, land managers charged preventing ecological impacts face financial logistical challenges to reduce threats by introduced species. The available toolbox (chemical, mechanical, or biological) is also rather limited. Failure permanently suppress species mechanical chemical treatments may result in biocontrol programs using host‐specific insect herbivores. Regardless the chosen method, long‐term assessment management outcomes on both target associated biota should be an essential component programs. data assess whether results desirable beyond short‐term reductions plant are Here, we use implementation a program targeting widespread wetland invader, Lythrum salicaria (purple loosestrife), North America track over more than two decades New York State. After extensive testing, leaf‐feeding beetles ( Galerucella calmariensis pusilla ; hereafter “ ”), root‐feeding weevil Hylobius transversovittatus ) flower‐feeding Nanophyes marmoratus ), were approved for field releases. We used standardized monitoring protocol record abundance L. stem densities heights 1‐m 2 permanent quadrats at 33 different wetlands followed sites up 28 years. As part this monitoring, 20 these wetlands, established factorial experiment releasing either no insects (control), only root feeders, leaf beetles, feeders. documented reduced occupancy following releases time, irrespective site‐specific differences starting communities abundance. could not complete our because dispersal root‐feeder‐only control within 5 years invalidated experimental controls. Our show that it took time significant changes occur, studies misleading results, as initially increased before significantly decreasing. Several after releases, prerelease predictions purple loosestrife declines have been confirmed.

Язык: Английский

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Recent advances in availability and synthesis of the economic costs of biological invasions

Authorea (Authorea), Год журнала: 2023, Номер unknown

Опубликована: Март 17, 2023

Biological invasions are a global challenge that has received insufficient attention.Recently available cost syntheses have provided policy and decision makers with reliable up-to-date information on the economic impacts of invasive alien species, aiming to motivate effective management.The resultant InvaCost database is now publicly freely accessible enables rapid extraction monetary globally.This facilitated knowledge sharing, developed more integrated multidisciplinary network researchers, forged collaborations among diverse organisations stakeholders.Over 50 scientific publications so far used detailed assessments invasion costs across geographic, taxonomic, spatio-temporal scales.These studies been instrumental in guiding legislative decisions, while attracting public media attention.We provide an overview improved availability, reliability, defragmentation costs, how this enhanced science as discipline, outline directions for future development.

Язык: Английский

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An abundant future for quagga mussels in deep European lakes

bioRxiv (Cold Spring Harbor Laboratory), Год журнала: 2023, Номер unknown

Опубликована: Июнь 4, 2023

Abstract Quagga mussels have expanded their range across the northern hemisphere in recent decades owing to dispersal abilities, prolific reproduction rates, and broad ecological tolerances. Their remarkable capacity filter particulates from water column has had profound effects on inland aquatic ecosystems. In North American Great Lakes, quagga mussel populations increased inexorably since late 1980’s, but it remains unclear whether will follow a similar trajectory Europe where they appeared more recently. Here we apply knowledge 33-year population monitoring effort lakes predict future deep European lakes, quaggas are quickly becoming conspicuous part of underwater landscape. We that biomass Lakes Biel, Constance, Geneva may increase by factor 9 – 20 2045. Like America, this be characterized shift larger individuals deeper depths as matures. If realized, rapid expansion would likely drive largest ecosystem change eutrophication period mid-20 th century.

Язык: Английский

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Status and occurrence of the non-indigenous dwarf surf clam Mulinia lateralis (Say, 1822) in the central Wadden Sea (southern North Sea)—a systematic survey

Marine Biodiversity, Год журнала: 2023, Номер 53(6)

Опубликована: Дек. 1, 2023

Abstract The species Mulinia lateralis (Say, 1822) is native to the western North Atlantic Ocean and was first documented in European coastal waters 2017. Since then, M. reported several times large abundances of Netherlands, Belgium, more scattered Germany. While introduction vector still unclear, we assume that dispersal southern Sea driven by larval drift related anti-clockwise residual tidal currents. To test this hypothesis document its current status central Wadden Sea, individuals were sampled systematically from intertidal flats along 10 transects ranging outer Ems River estuary west Elbe east (German coast) between February May 2022. In total, 897 specimens 392 stations (mean abundance 2.3 ± 5.0 ind./m 2 ). shell length ranged 4.0 23.6 mm. Regarding increasing number records at multiple sites Europe since 2017 based on data study, can be considered as established Sea.

Язык: Английский

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Más hallazgos contra el consenso eco-alarmista

Ecología Austral, Год журнала: 2023, Номер 33(2), С. 479 - 488

Опубликована: Май 1, 2023

As a follow-up of previous article (Grau 2022), I present five additional groups findings that challenge fairly established perceptions. 1) The impact climatically originated catastrophes has dramatically decreased, largely due to economic growth. 2) Bee populations are increasing, and even if they decrease, the effect on food security would be minor. 3) Estimates costs invasions by non-native species frequently exaggerated, without an adequate balance benefits. 4) In general, local consumption does not reduce carbon footprint no nutritional advantages. 5) European livestock sometimes increases diversity herbivores associated communities, could contribute mitigate effects extinctions with early humans in Americas. To promote more rigorous less dogmatic environmental science suggest: explicitly accepting change (including migrations invasions), is constitutive component functioning social-ecosystems; emphasizing should assessed through analysis long term trends, discerning between causal correlational relationships, mere observation particular events; preserving ‘essential’ role consisting valuation assertions their consistency reality (data) its functional for political or ideological agendas; proactively stimulating scientific initiatives consensus dominant believes as way creative profound research based data.

Язык: Английский

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Nuanced impacts of the invasive aquatic plant Crassula helmsii on Northwest European freshwater macroinvertebrate assemblages

The Science of The Total Environment, Год журнала: 2023, Номер 913, С. 169667 - 169667

Опубликована: Дек. 30, 2023

Invasive alien species are considered one of the greatest threats to global biodiversity, and particularly problematic in aquatic systems. Given foundational role macrophytes most freshwaters, plant invasions may drive strong bottom-up impacts on recipient biota. Crassula helmsii (New Zealand pygmyweed) is an Australasian macrophyte, now widespread northwest Europe. rapidly invades small lentic waterbodies, where it generally a serious threat native biodiversity. The precise ecological this invasion remain poorly understood, however, with respect macroinvertebrates, which comprise bulk freshwater faunal We conducted field study ponds, ditches lakes across core C. helmsii's invasive range (United Kingdom, Belgium Netherlands), finding that invaded sites had higher macroinvertebrate taxon richness than uninvaded sites, many infrequent rare macroinvertebrates co-occurred helmsii. Alien were more abundant North American amphipod Crangonyx pseudogracilis. At order level, water beetle (Coleoptera) abundance whereas true fly (Diptera) was sites. Taxonomic functional assemblage composition both impacted by invasion, largely relation taxa traits associated detritivory, suggesting partly mediated availability palatability its detritus. nuanced effects found here should encourage further quantitative research plant, perhaps prompt balanced re-evaluation macrofauna.

Язык: Английский

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Threatened stick-nest rats preferentially eat invasive boxthorn rather than native vegetation on Australia’s Reevesby Island

Wildlife Research, Год журнала: 2024, Номер 51(8)

Опубликована: Июль 24, 2024

Context The incorporation of invasive plants into novel ecosystems often has negative effects, but it can also sometimes enhance ecosystem function. threatened native rodent species Leporillus conditor (greater stick-nest rat) is extinct on the Australian mainland and now lives primarily small islands off coast southern Australia. Many these are degraded invaded by African boxthorn (Lycium ferocissimum), a weed national significance. However, L. does not appear to be negatively affected presence boxthorn, raising question how two co-exist. Aims To understand uses we evaluated dietary composition parts Reevesby Island comparing consumption with that vegetation. Methods We identified three key vegetation types centre island used point-intercept surveys estimate relative availability plant in each. then micro-histological faecal analysis proportions each diet conditor, quantified selection using ratios (use/availability). Key results Qualitative evidence activity suggested was mostly confined greater abundance than other (13.5%, compared 5.7% total sampled vegetation). Furthermore, 51.7% content 11.8% resulting ration for 4.4. Native appeared favoured food sources included Olearia axillaris, Myoporum insulare Enchylaena tomentosa. Conclusions Stick-nest rats demonstrate clear both terms (tested quantitatively) nesting (from previous research our field observations). Implications strong declared noxious as its main source persistence require consideration regards management where occurs. More broadly, highlights some elements may have unexpected positive impacts original ecosystems.

Язык: Английский

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