Diets of Scaled Quail in Southern Arizona

Medina, Alvin L.

doi:10.2307/3800942

Cited by 25 publications

(12 citation statements)

References 7 publications

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“…The elimination of native plant species through competition with alien grasses in turn affects the diversity and persistence of animal populations that rely on grasses for food or habitat (16,100,147,184). For example, the elimination of native dune species by the aggressive alien beachgrass Ammophila arenaria has resulted in a dramatic decline in native insect species, including the elimination of several rare species (147).…”

Section: Resource Competitionmentioning

confidence: 99%

“…For example, the elimination of native dune species by the aggressive alien beachgrass Ammophila arenaria has resulted in a dramatic decline in native insect species, including the elimination of several rare species (147). The replacement of native herbs and shrubs in the Sonoran desert by Eragrostis lehmanniana has resulted in a local decline in native bird and insect species (16,100). The presence of introduced grasses in disturbed prairie in Canada has caused simplification of habitat structure and a shift in species composition of birds (184).…”

Section: Resource Competitionmentioning

confidence: 99%

See 1 more Smart Citation

Biological Invasions by Exotic Grasses, the Grass/Fire Cycle, and Global Change

D’Antonio¹,

Vitousek²

1992

Annu. Rev. Ecol. Syst.

2,717

1,406

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Section: Resource Competitionmentioning

confidence: 99%

Section: Resource Competitionmentioning

confidence: 99%

Biological Invasions by Exotic Grasses, the Grass/Fire Cycle, and Global Change

D’Antonio¹,

Vitousek²

1992

Annu. Rev. Ecol. Syst.

2,717

1,406

View full text Add to dashboard Cite

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“…Plant invasions can alter both the structure and function of ecosystems (Vitousek and Walker 1989) and have been linked to reduced richness and diversity of native species around the world (Young and Evans 1973;Cross 1981;Bock et al 1986;Medina 1988;Holmes and Cowling 1997;Kwiatkowska et al 1997;Christian and Wilson 1999). Although invasions by exotic plants have increased dramatically as human travel and commerce have increased (Vitousek et al 1997), few have been comprehensively described (Mack 2000).…”

Section: Introductionmentioning

confidence: 97%

Red brome (Bromus rubens subsp. madritensis) in North America: possible modes for early introductions, subsequent spread

Salo

2005

Biol Invasions

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Although invasions by exotic plants have increased dramatically as human travel and commerce have increased, few have been comprehensively described. Understanding the patterns of invasive species' spread over space and time will help guide management activities and policy. Tracing the earliest appearances of an exotic plant reveals likely sites of introduction, paving the way for genetic studies to quantify founder events and identify potential source populations. Red brome (Bromus madritensis subsp. rubens) is a Mediterranean winter annual grass that has invaded even relatively undisturbed areas of western North America, where it threatens native plant communities. This study used herbarium records and contemporary published accounts to trace the early introductions and subsequent spread of red brome in western North America. The results challenge the most frequently cited sources describing the early history of this grass and suggest three possible modes for early introductions: the California

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“…At each used location and paired random location, we placed a 20-cm × 50-cm Daubenmire frame over the bird location and random site and at 4 m away in 4 cardinal directions, for 5 sampling frames/site (fourthorder selection; Johnson 1980). Vegetation covariates previously reported to be associated with use by scaled quail included bare ground (Wilson and Crawford 1987), litter (Stormer 1984), canopy cover of forbs (Campbell et al 1973, Medina 1988, native grasses (Medina 1988), prickly pear (Rollins 2000), subshrubs (Stormer 1984), and shrubs (Schemnitz 1961, Reid et al 1979, Wilson and Crawford 1987, Silvy et al 2007). We visually estimated percent cover of bare ground, litter, forbs, and grasses (Daubenmire 1968).…”

Section: Organism-centered Scalementioning

confidence: 99%

Non‐native grasses reduce scaled quail habitat

et al. 2019

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Non‐native grasses are frequently sown in the southwestern United States for livestock forage and erosion control. These grasses often spread from areas where they are planted and replace native grasses and forbs. We tested the hypothesis that chestnut‐bellied scaled quail (Callipepla squamata castanogastris) avoid locations dominated by non‐native grasses. We trapped scaled quail at 5 different sites in southern Texas, USA, and located quail fitted with necklace‐style transmitters 3 times/week during 2013–2014. We manually delineated plant communities using aerial maps and on‐the‐ground knowledge of the study sites. We examined second‐order (home‐range scale) selection by comparing proportion of the areas of plant communities within 62 scaled quail home ranges (used) paired with random home ranges (available). We examined third‐order (within‐home‐range scale) selection by comparing the composition of bird location (used) and random (available) points based on proportion of points within plant communities. For both home‐range scale and within‐home‐range scale analyses, we used non‐parametric multivariate analysis of variance with 9,999 random permutations. We examined fourth‐order (organism‐centered) selection by measuring vegetation variables at used and available locations and then estimating the relative probability of use of vegetation variables and by estimating continuous selection functions for variables that were influential in determining relative probability of use. Buffelgrass (Pennisetum ciliare) and Old World bluestems (Bothriochloa spp., Dichanthium annulatum and other Dichanthium spp.) comprised 99% (95% CI = 98–100%, n = 143 sites where non‐native plants occurred) of the non‐native grasses in our study areas. Scaled quail avoided non‐native and riparian plant communities at the home‐range and within‐home‐range scales of selection. At the organism‐centered scale of selection, odds of use by scaled quail decreased 28% for every 10% increase in non‐native grass cover and increased 12% for every 10% increase in shrub canopy cover. Scaled quail avoided locations with >10% canopy cover of non‐native grasses. Based on avoidance at 3 scales of selection, dominance of buffelgrass and Old World bluestems degrades habitat for scaled quail. Spread and sowing of non‐native grasses and brush clearing may be partly responsible for declines in scaled quail populations. © 2019 The Wildlife Society.

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Diets of Scaled Quail in Southern Arizona

Cited by 25 publications

References 7 publications

Biological Invasions by Exotic Grasses, the Grass/Fire Cycle, and Global Change

Biological Invasions by Exotic Grasses, the Grass/Fire Cycle, and Global Change

Red brome (Bromus rubens subsp. madritensis) in North America: possible modes for early introductions, subsequent spread

Non‐native grasses reduce scaled quail habitat

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