Alien species and climate change drive shifts in a riverine fish community and trait compositions over 35 years

Hen, Gwendaline Le; Balzani, Paride; Haase, Peter; Kouba, Antonín; Liu, Chunlong; Nagelkerke, L.A.J.; Theissen, Nikola; Renault, David; Soto, Ismael; Haubrock, Phillip J.

doi:10.1016/j.scitotenv.2023.161486

Cited by 20 publications

(13 citation statements)

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“…Furthermore, there is a pressing need for persistent spatio‐temporal sampling (Leroy et al, 2023). Regular, systematic sampling across different seasons and years would help in understanding temporal trends and the impact of environmental changes (Haubrock et al, 2023; Haubrock & Soto, 2023; Le Hen et al, 2023), such as salinization, climate change and non‐native species introductions, on fish communities (Haubrock, Balzani, et al, 2020; Leite et al, 2022; Haubrock & Soto, 2023). Additionally, incorporating environmental DNA (eDNA) sampling could offer insights into species diversity and presence with less impact on the environment and could be particularly useful for detecting rare or elusive species (Sakata et al, 2021).…”

Section: Discussionmentioning

confidence: 99%

How fish populations in Lake Bafa (Western Anatolia) respond to ecological shifts

Kurtul,

Kaya,

Kaykaç

et al. 2024

Aquatic Conservation

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Long‐term biodiversity monitoring is crucial for freshwater ecosystems as it enables the detection of even subtle changes and biodiversity trends, guiding conservation efforts and ensuring the sustainability of these vital habitats. Despite becoming more commonly considered in the field of freshwater ecology and biological invasions, studies using long‐term time series from Türkiye's freshwater resources have remained scarce. To assess the availability of data and ultimately present a baseline for future efforts, we combined published museum records and samples from recent field studies from the highly anthropogenically‐altered Lake Bafa in Western Anatolia covering the period 1958–2019. Lake Bafa has a very diverse aquatic ecosystem, providing habitat for both freshwater and saltwater species, and is one of the allottees in Türkiye's inland fish production. In the current study, we investigated how fish populations in Lake Bafa were affected by environmental changes and examined changes in taxonomic and functional diversity of non‐native species over time. The analyses revealed—concomitant to an increase in native marine and freshwater species richness—an increase in non‐native species richness over time. Non‐native species did not interfere with native species' niche space, whereas applied models indicate that in this highly altered ecosystem, foremost temperature and salinity shaped the fish community over time, limiting the impacts of non‐native species. These results have implications for the fishery of the lake, which includes highly valuable catadromous fish species, highlighting the value and importance of collecting long‐term data in Türkiye to better understand both invasion dynamics and changes in the naturality of Turkish ecosystems. These findings further underline the importance of long‐term data to create new management strategies for the lake and to start restoration processes, thus improving fisheries management.

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Section: Discussionmentioning

confidence: 99%

How fish populations in Lake Bafa (Western Anatolia) respond to ecological shifts

Kurtul,

Kaya,

Kaykaç

et al. 2024

Aquatic Conservation

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“…To identify periods in which the variance of costs reported within InvaCost (v4.1) changed over time, we applied a first-order autoregressive AR (1) process for the residuals [ 58 ]. This enabled the computation of derivatives of fitted splines using the method of finite differences to estimate the rate of change (slope) in the fitted smoother [ 59 ]. This produces diagnostic plots of the costs over time, where we could identify periods of non-random change(s) and superimpose them on the respective temporal trend [ 60 ].…”

Section: Methodsmentioning

confidence: 99%

Unveiling the hidden economic toll of biological invasions in the European Union

et al. 2023

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Background Biological invasions threaten the functioning of ecosystems, biodiversity, and human well-being by degrading ecosystem services and eliciting massive economic costs. The European Union has historically been a hub for cultural development and global trade, and thus, has extensive opportunities for the introduction and spread of alien species. While reported costs of biological invasions to some member states have been recently assessed, ongoing knowledge gaps in taxonomic and spatio-temporal data suggest that these costs were considerably underestimated. Results We used the latest available cost data in InvaCost (v4.1)—the most comprehensive database on the costs of biological invasions—to assess the magnitude of this underestimation within the European Union via projections of current and future invasion costs. We used macroeconomic scaling and temporal modelling approaches to project available cost information over gaps in taxa, space, and time, thereby producing a more complete estimate for the European Union economy. We identified that only 259 out of 13,331 (~ 1%) known invasive alien species have reported costs in the European Union. Using a conservative subset of highly reliable, observed, country-level cost entries from 49 species (totalling US$4.7 billion; 2017 value), combined with the establishment data of alien species within European Union member states, we projected unreported cost data for all member states. Conclusions Our corrected estimate of observed costs was potentially 501% higher (US$28.0 billion) than currently recorded. Using future projections of current estimates, we also identified a substantial increase in costs and costly species (US$148.2 billion) by 2040. We urge that cost reporting be improved to clarify the economic impacts of greatest concern, concomitant with coordinated international action to prevent and mitigate the impacts of invasive alien species in the European Union and globally.

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“…To identify periods in which the variance of costs reported within InvaCost (v4.1) changed over time, we applied a rst-order autoregressive AR(1) process for the residuals (Nathan et al, 1999). This enabled the computation of derivatives of tted splines using the method of nite differences to estimate the rate of change (slope) in the tted smoother (Le Hen et al, 2023). This produces diagnostic plots of the costs over time, where we could identify periods of non-random change(s) and superimpose them on the respective temporal trend (Simpson, 2018).…”

Section: Temporal Projectionmentioning

confidence: 99%

Unveiling the hidden economic toll of biological invasions in the European Union

Henry

Leung

Cuthbert

et al. 2023

Preprint

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Background: Biological invasions threaten the functioning of ecosystems, biodiversity, and human well-being by degrading ecosystem services and eliciting massive economic costs. The European Union, as the world’s third-largest economy, has historically been a hub for cultural development and global trade, and thus, has extensive opportunities for the introduction and spread of alien species. While reported costs of biological invasions to some member states have been recently assessed, ongoing knowledge gaps in taxonomic and spatio-temporal data suggest that these costs were considerably underestimated. Results: We used the latest available cost data in InvaCost (v4.1) — the most comprehensive database on the costs of biological invasions — to assess the magnitude of this underestimation within the European Union via projections of current and future invasion costs. We used macroeconomic scaling and temporal modelling approaches to project available cost information over gaps in taxa, space, and time, thereby producing a more complete estimate for the European Union economy. We identified that 259 out of 13,331 (~ 1%) of known invasive alien species have reported costs in the European Union. Using a conservative subset of highly reliable, observed, country-level cost entries from 49 species (totalling US$4.7 billion; 2017 value) and information on ~ 13,000 established alien species within European Union member states, we projected unreported cost data for all member states. Conclusions: Our corrected estimate of observed costs was potentially 501% higher (US$28.0 billion) than currently recorded. Using future projections of current estimates, we also identified a substantial increase in costs and costly species (US$148.2 billion) by 2040. We urge for improved cost reporting to clarify economic impacts of greatest concern, concomitant with coordinated international action to prevent and mitigate the impacts of invasive alien species in the European Union and globally.

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Alien species and climate change drive shifts in a riverine fish community and trait compositions over 35 years

Cited by 20 publications

References 115 publications

How fish populations in Lake Bafa (Western Anatolia) respond to ecological shifts

How fish populations in Lake Bafa (Western Anatolia) respond to ecological shifts

Unveiling the hidden economic toll of biological invasions in the European Union

Unveiling the hidden economic toll of biological invasions in the European Union

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