The Effect on the Brewer's Sparrow of Spraying Big Sagebrush

Schroeder, Max; Sturges, David L.

doi:10.2307/3897780

Cited by 27 publications

(31 citation statements)

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“…Schroeder and Strurges (1975) found that Brewer's sparrows' use of sprayed big sagebrush stands was 67 percent lower the first year after treatment and 99 percent lower for the second year, than on unsprayed stands. After the third year of treatment, no nests were found in the sprayed areas.…”

Section: Obligate Bird Speciesmentioning

confidence: 93%

“…2.4 and 2.5;Best 1972;Booth 1952;Petersen and Best 1985Reynolds 1981;Rich 1978aRich ,b, 1980Schroeder and Strurges 1975;Winter and Best 1985). Only observed Brewer's sparrows nesting in a shrub other than big sagebrush, that being silver sagebrush.…”

Section: Obligate Bird Speciesmentioning

confidence: 98%

“…Best (1972) found that 15 percent of the nests were placed in dead big sagebrush plants, 13 percent in what he termed partially dead (25 to 95 percent dead), and 72 percent in live plants. Best's (1972) study was conducted in an area that had denser populations of Brewer's sparrows at 42 birds per 100 acres versus 24 birds for the Schroeder and Strurges (1975) study, perhaps forcing a small percentage of the birds to nest in dead plants. Further, Schroeder and Strurges (1975) noted that spraying in 100-foot strips was less damaging on Brewer's sparrows than whole plot control.…”

Section: Obligate Bird Speciesmentioning

confidence: 99%

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Big sagebrush: A sea fragmented into lakes, ponds, and puddles

Welch¹

2005

107

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Pioneers traveling along the Oregon Trail from western Nebraska, through Wyoming and southern Idaho and into eastern Oregon, referred to their travel as an 800 mile journey through a sea of sagebrush, mainly big sagebrush (Artemisia tridentata). Today approximately 50 percent of the sagebrush sea has given way to agriculture, cities and towns, and other human developments. What remains is further fragmented by range management practices, creeping expansion of woodlands, alien weed species, and the historic view that big sagebrush is a worthless plant. Two ideas are promoted in this report: (1) big sagebrush is a nursing mother to a host of organisms that range from microscopic fungi to large mammals, and (2) many range management practices applied to big sagebrush ecosystems are not science based.

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Section: Obligate Bird Speciesmentioning

confidence: 93%

Section: Obligate Bird Speciesmentioning

confidence: 98%

Section: Obligate Bird Speciesmentioning

confidence: 99%

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Big sagebrush: A sea fragmented into lakes, ponds, and puddles

Welch¹

2005

107

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“…Brewer's sparrow and sage thrasher, which nest above the ground in shrubs, were associated with unburned islands of sagebrush and did not use the grassy portions of the burned site. If the fire had killed all the shrubs, Brewer's sparrow, which can be eliminated from sagebrush habitats with chemical control of shrubs (Schroeder and Sturges 1975), probably would have been absent.…”

Section: Shrublandsmentioning

confidence: 99%

Wildland fire in ecosystems: effects of fire on fauna

Smith¹

2000

122

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_____________________________________Fires affect animals mainly through effects on their habitat. Fires often cause short-term increases in wildlife foods that contribute to increases in populations of some animals. These increases are moderated by the animals' ability to thrive in the altered, often simplified, structure of the postfire environment. The extent of fire effects on animal communities generally depends on the extent of change in habitat structure and species composition caused by fire. Stand-replacement fires usually cause greater changes in the faunal communities of forests than in those of grasslands. Within forests, standreplacement fires usually alter the animal community more dramatically than understory fires. Animal species are adapted to survive the pattern of fire frequency, season, size, severity, and uniformity that characterized their habitat in presettlement times. When fire frequency increases or decreases substantially or fire severity changes from presettlement patterns, habitat for many animal species declines.

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“…Birds observed on sprayed plots were near sagebrush plants that had survived the spray. No nests were located in sprayed areas one and two years post application (Schroeder and Sturges 1975).…”

Section: Pesticides/herbicidesmentioning

confidence: 97%