A landscape approach for identifying potential reestablishment sites for extirpated stream fishes: an example with Arctic grayling (Thymallus arcticus) in Michigan

Tingley, Ralph W.; Infante, Dana M.; Dean, Emily M.; Schemske, Douglas W.; Cooper, Arthur R.; Ross, Jared; Daniel, Wesley M.

doi:10.1007/s10750-021-04791-8

Cited by 3 publications

(4 citation statements)

References 75 publications

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“…Further, groups of tributaries may provide unique temperature or river discharge regimes that are distinct from the main channel. The spatial configuration of tributaries may aid in stabilizing mainstem fish abundance by offering contrasting thermal regimes that provide optimal temperatures for juvenile rearing (Phillis et al, 2018), serve as refuge for cool-coldwater fluvial species during warm periods (Barrett and Armstrong, 2022;Tingley et al, 2022), offer thermal refugia habitats necessary for overwintering (Moore et al, 2022a), or support reproduction when suitable temperatures are absent downstream of hypolimneticrelease dams (Clarkson and Childs, 2000). Tributaries can also provide refuge from interspecific competition with invasive species that reside in the mainstem (Pfauserova et al, 2021;Yackulic et al, 2021).…”

Section: Provisioning Of Portfolio Assets By Tributaries For Fish Pop...mentioning

confidence: 99%

Diverse portfolios: Investing in tributaries for restoration of large river fishes in the Anthropocene

Bouska

Healy

Moore

et al. 2023

Front. Environ. Sci.

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Rehabilitation of large Anthropocene rivers requires engagement of diverse stakeholders across a broad range of sociopolitical boundaries. Competing objectives often constrain options for ecological restoration of large rivers whereas fewer competing objectives may exist in a subset of tributaries. Further, tributaries contribute toward building a “portfolio” of river ecosystem assets through physical and biological processes that may present opportunities to enhance the resilience of large river fishes. Our goal is to review roles of tributaries in enhancing mainstem large river fish populations. We present case histories from two greatly altered and distinct large-river tributary systems that highlight how tributaries contribute four portfolio assets to support large-river fish populations: 1) habitat diversity, 2) connectivity, 3) ecological asynchrony, and 4) density-dependent processes. Finally, we identify future research directions to advance our understanding of tributary roles and inform conservation actions. In the Missouri River United States, we focus on conservation efforts for the state endangered lake sturgeon, which inhabits large rivers and tributaries in the Midwest and Eastern United States. In the Colorado River, Grand Canyon United States, we focus on conservation efforts for recovery of the federally threatened humpback chub. In the Missouri River, habitat diversity focused on physical habitats such as substrate for reproduction, and deep-water habitats for refuge, whereas augmenting habitat diversity for Colorado River fishes focused on managing populations in tributaries with minimally impaired thermal and flow regimes. Connectivity enhancements in the Missouri River focused on increasing habitat accessibility that may require removal of physical structures like low-head dams; whereas in the Colorado River, the lack of connectivity may benefit native fishes as the disconnection provides refuge from non-native fish predation. Hydrologic variability among tributaries was present in both systems, likely underscoring ecological asynchrony. These case studies also described density dependent processes that could influence success of restoration actions. Although actions to restore populations varied by river system, these examples show that these four portfolio assets can help guide restoration activities across a diverse range of mainstem rivers and their tributaries. Using these assets as a guide, we suggest these can be transferable to other large river-tributary systems.

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Section: Provisioning Of Portfolio Assets By Tributaries For Fish Pop...mentioning

confidence: 99%

Diverse portfolios: Investing in tributaries for restoration of large river fishes in the Anthropocene

Bouska

Healy

Moore

et al. 2023

Front. Environ. Sci.

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“…There are several biotic factors threatening the Arctic Grayling overall, including loss of habitat and refugia, competition from introduced species, and water pollution (Kaya 1992;Lamothe and Peterson 2007;Peterson et al 2009;Hodge 2021;Albertson et al 2022). However, the factor of most concern affecting the distribution and survival of Arctic Grayling in the future is the likely increases in water temperatures where they reside (Lohr et al 1996;Goble et al 2021;Tingley et al 2022).…”

Section: Impact Statementmentioning

confidence: 99%

“…Unfortunately, the temperature at which no survival was observed in this study was only 2°C warmer than current nominal temperatures within this species' distribution range. Future projections of warming global temperatures may result in water temperature becoming a significant limiting factor in the distribution of Arctic Grayling (Kovach et al 2020;Goble et al 2021;Tingley et al 2022).…”

Section: Growth Proximate Composition and Survivalmentioning

confidence: 99%

Effect of temperature on growth, survival, and chronic stress responses of Arctic Grayling juveniles

Carrillo‐Longoria,

Gaylord,

Andrews

et al. 2023

Trans Am Fish Soc

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ObjectiveArctic Grayling Thymallus arcticus are Holarctically distributed, with a single native population in the conterminous United States occurring in the Big Hole River, Montana, where water temperatures can fluctuate throughout the year from 8°C to 18°C. A gradual increase in mean water temperature has been reported in this river over the past 20 years due to riparian habitat changes and climate change effects. We hypothesized that exposing Arctic Grayling to higher temperatures would result in lower survival, decreased growth, and increased stress responses.MethodsOver a 144‐day trial, Arctic Grayling juveniles were subjected to water temperatures ranging from 8°C to 26°C to measure the effects on growth, survival, gene expression, and antioxidant enzyme activity.ResultFish growth increased with increasing water temperature up to 18°C, beyond which survival was reduced. Fish did not survive at temperatures above 22°C. In response to temperatures above 16°C, 3.0‐fold and 1.5‐fold increases in gene expression were observed for superoxide dismutase (SOD) and glutathione peroxidase (GPx), respectively, but no changes were seen in the gene expression ratio of heat shock protein 70 to heat shock protein 90. Activities of the SOD and GPx enzymes also rose at temperatures above 16°C, indicating heightened oxidative stress. Catalase gene expression and enzyme activity decreased with rising temperatures, suggesting a preference for the GPx pathway, as GPx could also be providing help with lipid peroxidation. An increase in thiobarbituric acid reactive substances was also recorded, which corresponded with rising temperatures.ConclusionOur findings thus underscore the vulnerability of Arctic Grayling to minor changes in water temperature. Further increases in mean water temperature could significantly compromise the survival of Arctic Grayling in the Big Hole River.

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“…The same can be said for environmental flows and their influence on hydropower, irrigation, and other industries (Arthington et al 2018). Restoring processes for a desirable native species may also benefit undesirable invasive species that occupy the same system (Robinson et al 2021, Tingley et al 2022. Tradeoffs of either perspective are scale dependent and further emphasize that spatial scale is a crucial criterion to consider for models and informing management.…”

Section: Managing Rivers As a Site Or A Processmentioning

confidence: 99%

A Spatial Scale Approach to Fish Habitat Ecology and Impacted Rivers

Hansen

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Fish biodiversity in rivers is threatened by continual habitat loss. Evidence to support management and restoration of rivers requires information about the specific habitat requirements for entire fish communities. The complexity of this topic, combined with additional challenges of multiple stressors, data limitation, and natural dynamics of rivers, facilitates novel model development for both applied and theoretical arenas. Central to this area of study is the importance of spatial scale. Spatial scale is the context on which measurements, models, management, and policy have the potential to synchronize in an effective manner. The forefront and progress of river restoration depends on the provisioning of timely evidence for decision-making that comes directly from models. This thesis explores and develops a spatial scale approach to model fish communities and habitat in impacted rivers. I present a comprehensive vision of how the spatial scale approach can be implemented across spatial scales. I then introduce new models at each individual scale: micro-scale, meso-scale, macro-scale, riverscape-scale, and beyond-riverscape-scale. For each scale, I studied a different river or system of rivers from around the world. The variety of modeling techniques I used highlighted new opportunities to extend models for methods in river restoration such as flow regime management, fish passage construction, dam removal, non-native fish regulation, and plastic pollution reduction. Advancements for future models and limitations are discussed in the context of spatial scale and interdisciplinarity.

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A landscape approach for identifying potential reestablishment sites for extirpated stream fishes: an example with Arctic grayling (Thymallus arcticus) in Michigan

Cited by 3 publications

References 75 publications

Diverse portfolios: Investing in tributaries for restoration of large river fishes in the Anthropocene

Diverse portfolios: Investing in tributaries for restoration of large river fishes in the Anthropocene

Effect of temperature on growth, survival, and chronic stress responses of Arctic Grayling juveniles

A Spatial Scale Approach to Fish Habitat Ecology and Impacted Rivers

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