Hazard assessment of selenium to endangered razorback suckers (Xyrauchen texanus)

Hamilton, Steven J.; Holley, Kathleen M.; Buhl, Kevin J.

doi:10.1016/s0048-9697(01)01080-4

Cited by 8 publications

(3 citation statements)

References 24 publications

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“…Ranges in predicted whole-body concentrations for both Razorback Sucker and Colorado Pikeminnow spanned this 4.0 μg g –1 dw threshold in October 2015/2016 with predicted mean Colorado Pikeminnow concentrations exceeding the threshold in both years (Table ). Therefore, despite substantial reductions in Se loading from ∼22,200 to 12,600 lbs Se yr –1 , the persistence of elevated Se levels in the LGRB likely continues to cause adverse effects on the ecological fitness of the diminished Razorback Sucker and Colorado Pikeminnow populations in the LGRB. ,,, …”

Section: Results and Discussionmentioning

confidence: 99%

“…Therefore, despite substantial reductions in Se loading from ∼22,200 to 12,600 lbs Se yr −1 , 44 the persistence of elevated Se levels in the LGRB likely continues to cause adverse effects on the ecological fitness of the diminished Razorback Sucker and Colorado Pikeminnow populations in the LGRB. 18,25,35,71 Temporal Influences on Predicted Se Concentrations for Upper Trophic Level Fishes. Our third aim was to investigate the influence of temporal changes in Se concentrations in the LGRB food web on predicted Se concentrations in upper-trophic-level fishes.…”

Section: ■ Results and Discussionmentioning

confidence: 99%

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Temporal Influences on Selenium Partitioning, Trophic Transfer, and Exposure in a Major U.S. River

Brandt

Roberts

Stricker

et al. 2021

Environ. Sci. Technol.

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Hydrologic and irrigation regimes mediate the timing of selenium (Se) mobilization to rivers, but the extent to which patterns in Se uptake and trophic transfer through recipient food webs reflect the temporal variation in Se delivery is unknown. We investigated Se mobilization, partitioning, and trophic transfer along approximately 60 river miles of the selenium-impaired segment of the Lower Gunnison River (Colorado, USA) during six sampling trips between June 2015 and October 2016. We found temporal patterns in Se partitioning and trophic transfer to be independent of those in dissolved Se concentrations and that the recipient food web sustained elevated Se concentrations from earlier periods of high Se mobilization. Using an ecosystem-scale Se accumulation model tailored to the Lower Gunnison River, we predicted that the endangered Razorback Sucker (Xyrauchen texanus) and Colorado Pikeminnow (Ptychocheilus lucius) achieve whole-body Se concentrations exceeding aquatic life protection criteria during periods of high runoff and irrigation activity (April–August) that coincide with susceptible phases of reproduction and early-life development. The results of this study challenge assumptions about Se trophodynamics in fast-flowing waters and introduce important considerations for the management of Se risks for biota in river ecosystems.

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Section: Results and Discussionmentioning

confidence: 99%

Section: ■ Results and Discussionmentioning

confidence: 99%

Temporal Influences on Selenium Partitioning, Trophic Transfer, and Exposure in a Major U.S. River

Brandt

Roberts

Stricker

et al. 2021

Environ. Sci. Technol.

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“…Techniques like the hazard assessment protocol (Hamilton et al, 2001) and the quotient method (Kimarle et al, 1979) are more amenable to the assessment of water hazards related to toxic chemicals but are less applicable to hazard assessment procedures that hope to capture socio-economic scenarios at the watershed or farm levels. Other specialized ERA frameworks have only concentrated on particular kinds of environmental hazards like landslides (Dai et al, 2002).…”

Section: Hazard Assessment Approachesmentioning

confidence: 99%

Water resource hazard management system: assessing sustainable practices at the farm and catchment scales

Ochola

Kerkides

Argyrokastritis

2002

Irrigation and Drainage

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Water quality is a pivotal environmental indicator of sustainable land management and environmental 'health'. Hazards to water resource use at the farm and catchment scales have far-reaching physical, biological, environmental and socio-economic impacts. These impacts are exacerbated by on-site and off-site agricultural and non-agricultural activities. A prototype water hazard management decision support system that uses an integrated framework to identify, by origin, hazards and related best water management practices guidelines is proposed. The system recommends best management guidelines with respect to the inherent water resource use mitigations. The system has been calibrated by and applied to expert knowledge and experimental and survey data from Kiumbu Catchment in central Kenya. Suggestions are made for the inclusion of GIS capabilities for the production of water resource assessment maps and other spatial water quality indicators. Copyright  2002 John Wiley & Sons, Ltd.KEY WORDS: water quality; water hazard management; water management practices; decision support system RÉSUMÉ La qualité de l'eau est un indice fondamental pour l'estimation de l'aménagement territorial et de la 'santé' environnementale. Les risques dusà l'utilisation des ressources hydriques au niveau des exploitations agricoles et des bassins versants ont de grands impacts physiques, biologiques, environnementaux et socio-économiques. Ces impacts sont de plus en plus accentuées par des activités aussi bien agricoles que non-agricoles. On propose ici un prototype de système d'aideà la décision pour la gestion des risques qui, utilisant une structure integrée, permettra d'identifier les risques selon leur origine et de proposer les grands axes d'une meilleure gestion des ressources hydriques. Le système recommande des directives en rapport avec les mesures environnementales inhérentes au site. Le système aété calibré par des données provenant d'une connaisaance théorique et expérimentale dans le bassin versant Kiumbu du Kenya central. Des suggestions ontété faites afin d'inclure des capacités GIS pour la production des cartes d'estimation des ressources hydriques mais aussi d'autres indicateurs de la qualité de l'eau.

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Selenium and Other Trace Elements in Aquatic Insects in Coal Mine–Affected Streams in the Rocky Mountains of Alberta, Canada

Wayland¹,

Crosley

2006

Arch Environ Contam Toxicol

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We determined levels of Se, As, Cd, Pb, and Zn in aquatic insects at coal mine-impacted and reference sites in streams in the Rocky Mountain foothills of west central Alberta from 2001-2003. Selenium levels were greater at coal mine-impacted sites than at reference sites in caddisflies but not in mayflies or stoneflies. Arsenic levels were greater at coal mine-impacted sites than at reference sites in caddisflies and stoneflies but not in mayflies. Zn levels were higher at coal mine-impacted sites than at reference sites in all three groups of insects. At coal mine-impacted sites, Se levels in mayflies and caddisflies were greater than those in stoneflies while at reference sites mayflies contained greater concentrations of Se than either caddisflies or stoneflies. Arsenic levels in mayflies were greater than those in caddisflies at reference and coal mine-impacted sites and were greater than those in stoneflies at reference sites. At both types of sites Cd differed amongst insect taxa in the order of mayflies > caddisflies > stoneflies. The same was true of Zn at coal mine-affected sites. At reference sites, stoneflies had greater concentrations of Zn than both mayflies and caddisflies. At both types of sites, Pb levels were greater in mayflies and caddisflies than they were in stoneflies. Of the five trace elements considered in this study, only Se was sufficiently elevated in aquatic invertebrates to be of potential concern for consumers such as fish and aquatic birds. Such was the case at both coal mine-impacted and reference sites.

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Hazard assessment of selenium to endangered razorback suckers (Xyrauchen texanus)

Cited by 8 publications

References 24 publications

Temporal Influences on Selenium Partitioning, Trophic Transfer, and Exposure in a Major U.S. River

Temporal Influences on Selenium Partitioning, Trophic Transfer, and Exposure in a Major U.S. River

Water resource hazard management system: assessing sustainable practices at the farm and catchment scales

Selenium and Other Trace Elements in Aquatic Insects in Coal Mine–Affected Streams in the Rocky Mountains of Alberta, Canada

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