Evaluation and optimization of a long-term fish monitoring program in the Hudson River

Nieman, Chelsey L.; Pendleton, Richard M.; Kenney, Gregg; Solomon, Christopher T.

doi:10.1016/j.ecolind.2021.108344

Cited by 6 publications

(2 citation statements)

References 25 publications

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“…Establishing long-term environmental monitoring programs are essential for understanding long-standing or wide-spread impacts such as climate change. Long-term fish monitoring programs exist and have been used to evaluate impacts from physical habitat change, invasive species introductions, climate change, and the influence of harvest (McClelland et al 2012;Counihan et al 2018;Nieman et al 2021). Similarly, long-term monitoring of water quality has helped to quantify ecological impacts from land-use change, agricultural practices, and other disturbances (Holeck et al 2015;Bock et al 2023).…”

Section: Discussionmentioning

confidence: 99%

A regional analysis of trace element water chemistry with applications for reconstructing environmental life history of fishes

Hamel,

Gerrin

2024

Preprint

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Trace elements and minerals can be important for physiological and biochemical functions in aquatic organisms and are also permanently retained in metabolically inert structures in fish, such as otoliths, which can be examined to reconstruct environmental history. Despite the importance of trace elements for biological function and environmental reconstruction, their distribution and dynamics in river systems is poorly understood. The objective of our study was to quantify trace element concentration data from across 14 river basins in Georgia, USA to create elemental concentration profiles and illustrate how spatial changes in water chemistry can be used to construct research hypotheses or make management decisions using results from chemical analyses on hard calcified parts of fish. Principal component analysis revealed substantial variation in water chemistry among and with river basins. Pairwise comparisons of Sr:Ca and Ba:Ca ratios were useful in quantifying specific differences among river systems within river basins. These data will be useful for establishing a baseline for long-term water chemistry monitoring and provides a framework for future fish chemistry research.

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Section: Discussionmentioning

confidence: 99%

A regional analysis of trace element water chemistry with applications for reconstructing environmental life history of fishes

Hamel,

Gerrin

2024

Preprint

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“…36, e11 Pereira et al, 2021;Perônico et al, 2020). On the other hand, short term monitoring with temporal gaps can provide useful information about the reservoir fish fauna over long time periods, representing an opportunity to investigate temporal variation when information is lost and sampling is non-continuous (Agostinho et al, 2016;Loures & Pompeu, 2018;Nieman et al, 2021).…”

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confidence: 99%

The fish fauna of Itutinga reservoir, 30 years after the first survey

Silva-Sene,

Prado,

Porto

et al. 2024

Acta Limnol. Bras.

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Aim Monitoring altered environments is crucial to understand the impacts and the possible changes in the local fish fauna. Therefore, we aimed to compare the ichthyofauna within a 67-year-old small run-of-the-river reservoir with surveys carried out in 1986 and 2019-2021 and update the checklist of this reservoir. Methods We used the data provided by Alves et al. (1998) and sampled fish in two sites inside Itutinga reservoir using gill nets, seine nets and hand nets and at the one tributary of the area using only hand nets. Results We collected a total of 12,978 individuals belonging to 37 fish species, and the species accumulation curve showed a tendency to the asymptote. Five of the sampled species are non-native and five are migratory. Alves et al. (1998) sampled a total of 25 fish species, 17 genera, 9 families and 3 orders. We added 12 fish species to the checklist that were not recorded by Alves et al. (1998), including four non-native and two migratory. On the other hand, two migratory species and one rheophilic were registered only in the preview study. In addition, we observed important changes in the species abundance rank. Conclusions The differences in the fish assemblage structure comparing both studies indicate important changes in fish assemblages over more than 33 years. Our results highlighted the importance of long-term fish monitoring in altered environments to assess temporal variation in fish assemblages and their responses to the multiple possibilities of external stressors, such as the shift in abundance of non-native species in these environments.

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Understanding the dynamics of fish spawning phenology and habitat in a changing ecosystem using a long-term ichthyoplankton monitoring dataset

Hunt,

Rokosz,

Chen

2024

Can. J. Fish. Aquat. Sci.

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As ecosystems change, understanding the consequences for fish population dynamics and habitat use is essential for their management. Using white perch (Morone americana) survey data on early life stages collected during a long-term ichthyoplankton monitoring program in the Hudson River (New York, USA), an ecosystem under immense pressure from climate change, ecological shifts, and anthropogenic activities, we evaluated the drivers of changes in egg abundance and spawning habitat between 1980-2017. Results indicated that egg abundance is associated nonlinearly with temperature, conductivity, discharge, depth, location, and the week of year. Additionally, large changes in hotspots of spawning activity within the Hudson River were identified and the lower extent of spawning habitat has moved upriver since 1980. We also found that egg abundance has declined within the river over time. This study indicates that the dynamics of white perch early life histories and spawning habitat are changing. It also highlights the utility of a long-term monitoring program for broadening our understanding of fish ecology in the age of big data in changing ecosystems.

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Evaluation and optimization of a long-term fish monitoring program in the Hudson River

Cited by 6 publications

References 25 publications

A regional analysis of trace element water chemistry with applications for reconstructing environmental life history of fishes

A regional analysis of trace element water chemistry with applications for reconstructing environmental life history of fishes

The fish fauna of Itutinga reservoir, 30 years after the first survey

Understanding the dynamics of fish spawning phenology and habitat in a changing ecosystem using a long-term ichthyoplankton monitoring dataset

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