Effects of Organophosphorus Insecticides on Sage Grouse in Southeastern Idaho

Blus, Lawrence J.; Staley, C. S.; Henny, Charles J.; Pendleton, Grey W.; Craig, Tim; Craig, Erica H.; Halford, Douglas K.

doi:10.2307/3809623

Cited by 49 publications

(29 citation statements)

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“…Recently, most concern regarding the nomogram has focused on this category. The nomogram value for forage became a concern when reports of sage grouse deaths in Idaho after feeding on alfalfa in fields treated with organophosphate pesticides [26]. Bennett et al [12] and Schauber et al [13] performed detailed analysis of this category with alfalfa treated with several concentrations of azinphos-methyl showing that the nomogram values underestimated residue values.…”

Section: Nomogram Categoriesmentioning

confidence: 97%

Field evaluation of the EPA (kenaga) nomogram, a method for estimating wildlife exposure to pesticide residues on plants

Pfleeger

Fong

Hayes

et al. 1996

Enviro Toxic and Chemistry

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Abstract-The Kenaga nomogram was developed by the U.S. Environmental Protection Agency (EPA) in the mid 1970s and has since been used prior to the registration of a pesticide to estimate the maximum potential pesticide residue level on plant material in the food chain of wildlife. The objective of this study was to evaluate the nomogram using field data. Six pesticides representing a variety of pesticide classes were applied to 15 plant species. Five of the six nomogram categories were tested with plant parts representing differences in surface morphology (i.e., glabrous vs. pubescent leaves). The sixth category was a mixed-grass community seeded with three grass species. Pesticide residue levels were determined the day of application and up to 32 d afterward. While the linear nomogram model does not represent the data as well as other models, relatively few data points (10%) collected on the day of pesticide application exceeded the nomogram predictions. The one systemic pesticide tested had degradation rates similar to nonsystemic pesticides in most categories. Present nomogram categories were significantly different from each other in most cases. However, the forage category should be combined with the leaves and leafy-crop category and have higher estimated residue levels than the Kenaga nomogram. A considerable amount of variation occurs in the level of pesticide residue on plant materials even under controlled experimental conditions and therefore nomogram values should be used as an estimate only until actual field residue data are available. The nomogram, with modifications, appears to be a reasonable regulatory device if careful thought is given in selecting the plant category for making residue estimates.

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Section: Nomogram Categoriesmentioning

confidence: 97%

Field evaluation of the EPA (kenaga) nomogram, a method for estimating wildlife exposure to pesticide residues on plants

Pfleeger

Fong

Hayes

et al. 1996

Enviro Toxic and Chemistry

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“…Some insecticides, such as organophosphates [9], often affect bird species so that birds die on fields sprayed with the chemical.…”

Section: Discussionmentioning

confidence: 99%

A comparison of two methods of estimating bird mortalities from field‐applied pesticides

Madrigal

Pixton

Collings³

et al. 1996

Enviro Toxic and Chemistry

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Abstract-At least two search methods for bird carcasses have been suggested to estimate bird mortality from the use of a pesticide, one outlined by the U.S. Environmental Protection Agency (EPA) and one we propose. The proposed estimator provides a nonparametric, model-free procedure for estimation of nontarget bird kills. Data were collected during a field study to compare the methods. These data were used to provide parameters for a computer simulation comparing characteristics of the mortality estimates produced by the two methods. The proposed method demonstrates marked advantages with respect to bias and mean squared error when compared to several interpretations of the EPA method in various search and mortality scenarios. In addition, the proposed method often provides estimates in instances where the EPA method cannot. The proposed estimator allows the estimation of search efficiency and survival probability simultaneously.

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“…Sharp-tailed grouse occur sympatrically with sage-grouse in the area where the dieoff was documented. However, Blus et al (1989) did not find any dead sharp-tailed grouse or mention their presence.…”

Section: Pesticidesmentioning

confidence: 99%

“…No mention was made of the type of insecticide used or the number of birds found dead. Blus et al (1989) document that sage-grouse in Idaho died or were severely intoxicated after feeding in alfalfa fields sprayed with the organophosphorus insecticides dimethoate and methamidophus. Intoxicated grouse could not walk or fly, were emaciated, and had diarrhea, and they likely would have died or succumbed to predation.…”

Section: Pesticidesmentioning

confidence: 99%

Double-brooding observed in a Columbian Sharp-tailed Grouse (Tympanachus phasianellus columbianus) in Idaho

Proett

Roberts

Messmer

2016

The Wilson Journal of Ornithology

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of the University of Wyoming conducted the lifecycle model analyses and prepared the summary of the results. C.E. Braun and an anonymous reviewer provided constructive comments that substantially improved the quality of the assessment. Finally, the authors are extremely grateful to G.D. Patton and P.M. McDonald with the USDA Forest Service, Rocky Mountain Region. Their support, technical guidance, understanding, and most of all, patience, made the preparation of this assessment easier. AUTHORS' BIOGRAPHIESRichard W. Hoffman earned his B.Sc. and M.Sc. Degrees in wildlife biology from Colorado State University. He subsequently worked for the Colorado Division of Wildlife for over 30 years as an avian researcher specializing in upland game birds. He has conducted research on population dynamics, habitat relationships, nutritional ecology, and behavior of white-tailed ptarmigan, dusky grouse, greater prairie-chickens, Columbian sharp-tailed grouse, and wild turkey. In retirement, he continues to work on projects involving white-tailed ptarmigan, greater sage-grouse, and Columbian sharp-tailed grouse.Allan E. Thomas earned his B.Sc. Degree in wildlife management with minors in fisheries and range management from the University of Arizona. He also conducted graduate work at the same university and received additional credits from attending schools in Washington, South Dakota, Arkansas, Alaska, and Idaho. His work experience spans more than 50 years and includes positions primarily with the Bureau of Land Management (22 years) and U.S. Fish and Wildlife Service (19 years). He retired from the Bureau of Land Management in 1999 and started another career as a private consultant in Boise, Idaho. DEDICATIONSadly, Allan E. Thomas passed away before this assessment was completed. Allan was a devoted conservation biologist who believed strongly in documenting and communicating biological information. This assessment is testimony to Allan's work ethic and is dedicated to his memory. COVER PHOTO CREDITPhotograph of male Columbian sharp-tailed grouse in an alert posture by Richard W. Hoffman. 3 SUMMARY OF KEY COMPONENTS FOR CONSERVATION OF COLUMBIAN SHARP-TAILED GROUSE StatusThe Columbian sharp-tailed grouse (Tympanuchus phasianellus columbianus; CSTG) is one of six existing subspecies of sharp-tailed grouse in North America. It is endemic to big sagebrush (Artemisia tridentata), shrubsteppe, mountain shrub, and riparian shrub plant communities of western North America. The subspecies currently occupies less than 10 percent of its historic range, with only three metapopulations remaining in central British Columbia, southeastern Idaho and northern Utah, and northwestern Colorado and south-central Wyoming. Within Region 2 of the USDA Forest Service (USFS), this grouse formerly occurred in as many as 22 counties in western Colorado and in portions of 11 counties in west-central, southwestern, and south-central Wyoming. Today, viable populations occur in only three counties in Colorado and one county in Wyoming. Attempts are being ...

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Effects of Organophosphorus Insecticides on Sage Grouse in Southeastern Idaho

Cited by 49 publications

References 0 publications

Field evaluation of the EPA (kenaga) nomogram, a method for estimating wildlife exposure to pesticide residues on plants

Field evaluation of the EPA (kenaga) nomogram, a method for estimating wildlife exposure to pesticide residues on plants

A comparison of two methods of estimating bird mortalities from field‐applied pesticides

Double-brooding observed in a Columbian Sharp-tailed Grouse (Tympanachus phasianellus columbianus) in Idaho

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