Association of Ring-Necked Pheasant, Gray Partridge, and Meadowlark Abundance to Conservation Reserve Program Grasslands

Haroldson, Kurt J.; Kimmel, Richard O.; Riggs, Michael R.; Berner, Alfred

doi:10.2193/0022-541x(2006)70[1276:aorpgp]2.0.co;2

Cited by 27 publications

(28 citation statements)

References 17 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…However, the response of meadowlarks to the amount of grassland habitat surrounding a habitat patch and the type of grassland matrix may vary among regions (Johnson and Igl ). For example, Haroldson et al () found abundance to be influenced by the amount of planted grassland in the landscape and Owens and Myres () found little difference in occurrence between survey routes containing 99% native grassland versus routes containing 66% cropland, whereas we found meadowlark abundance increased with the amount of native grassland within 400 m of grassland parcels in AB only.…”

Section: Discussioncontrasting

confidence: 52%

Songbird abundance in native and planted grassland varies with type and amount of grassland in the surrounding landscape

et al. 2013

View full text Add to dashboard Cite

Agriculture and wildlife conservation programs have converted vast amounts of cropland into grasslands planted with exotic species. Understanding how landscape context influences avian use of native and planted grasslands is essential for developing effective conservation strategies in agricultural landscapes. Our primary objective was to determine the extent to which the amount and type of grassland in the surrounding landscape influences the abundance of grassland songbird species on native and planted grassland parcels in southern Saskatchewan and Alberta, Canada. Bird abundance was more strongly influenced by the amount and type of grassland within 400 m of breeding parcels than at larger spatial scales. Grassland specialists responded similarly to habitat and landscape type over both years and provinces. Sprague's pipit (Anthus spragueii) and Baird's sparrow (Ammodramus bairdii) were most common in native grassland parcels surrounded by native grassland and were more likely to occur in planted grasslands surrounded by native grassland. Bobolinks (Dolichonyx oryzivorus) were most common in planted grassland parcels, but their abundance increased with the amount of native grassland surrounding these parcels. Our findings indicate that the suitability of planted grasslands for these species is influenced by their proximity to native grassland. Grassland generalists showed mixed responses to habitat and landscape type over the 2 years (Le Conte's sparrow [Ammodramus leconteii]) and between provinces (Savannah sparrow [Passerculus sandwichensis] and western meadowlark [Sturnella neglecta]). Management to benefit grassland specialists should therefore consider the landscape context when seeding cultivated land to non‐native grassland and conserve extant native grassland. © 2013 The Wildlife Society.

show abstract

Section: Discussioncontrasting

confidence: 52%

Songbird abundance in native and planted grassland varies with type and amount of grassland in the surrounding landscape

et al. 2013

View full text Add to dashboard Cite

show abstract

“…Knutsen and Euliss 2001, Haufler 2005. Research in the PPR has documented the regional-scale positive impacts of the CRP on many species of grassland birds (Johnson 2000, Haroldson et al 2006, Veech 2006, waterfowl (Reynolds et al 2001, Reynolds 2005, and other grassland-dependent wildlife (Knutsen and Euliss 2001). For example, it has been estimated that CRP grasslands in the PPR have contributed to the production of 25.7 million ducks between 1992 and 2003 (Reynolds et al 2001, Reynolds 2005.…”

Section: Wildlife Habitatmentioning

confidence: 99%

USDA conservation program and practice effects on wetland ecosystem services in the Prairie Pothole Region

Gleason

Euliss

Tangen

et al. 2011

Ecological Applications

109

102

View full text Add to dashboard Cite

Implementation of the U.S. Department of Agriculture (USDA) Conservation Reserve Program (CRP) and Wetlands Reserve Program (WRP) has resulted in the restoration of >2 million ha of wetland and grassland habitats in the Prairie Pothole Region (PPR). Restoration of habitats through these programs provides diverse ecosystem services to society, but few investigators have evaluated the environmental benefits achieved by these programs. We describe changes in wetland processes, functions, and ecosystem services that occur when wetlands and adjacent uplands on agricultural lands are restored through Farm Bill conservation programs. At the scale of wetland catchments, projects have had positive impacts on water storage, reduction in sedimentation and nutrient loading, plant biodiversity, carbon sequestration, and wildlife habitat. However, lack of information on the geographic location of restored catchments relative to landscape‐level factors (e.g., watershed, proximity to rivers and lakes) limits interpretation of ecosystem services that operate at multiple scales such as floodwater retention, water quality improvement, and wildlife habitat suitability. Considerable opportunity exists for the USDA to incorporate important landscape factors to better target conservation practices and programs to optimize diverse ecosystem services. Restoration of hydrologic processes within wetlands (e.g., hydroperiod, water level dynamics) also requires a better understanding of the influence of conservation cover composition and structure, and management practices that occur in uplands surrounding wetlands. Although conservation programs have enhanced delivery of ecosystem services in the PPR, the use of programs to provide long‐term critical ecosystem services is uncertain because when contracts (especially CRP) expire, economic incentives may favor conversion of land to crop production, rather than reenrollment. As demands for agricultural products (food, fiber, biofuel) increase, Farm Bill conservation programs will become increasingly important to ensure provisioning of ecosystem services to society, especially in agriculturally dominated landscapes. Thus, continued development and support for conservation programs legislated through the Farm Bill will require a more comprehensive understanding of wetland ecological services to better evaluate program achievements relative to conservation goals.

show abstract

“…We attempted to conduct 10 replicate time‐of‐detection surveys at each study site between 20 April and 29 May 2007. The choice of n = 10 replicates was based on the sampling design for the habitat study (Haroldson et al 2006, 2007), where unpublished data on variation in roadside counts suggested that 10 temporal replicates were needed to meet a target CV of 30%. On three sites, only nine replicate surveys were completed due to weather and logistical problems.…”

Section: Methodsmentioning

confidence: 99%

“…We then simulated a positive but variable relationship ( R 2 = 0.586) between percent grassland and N i at the 18 study sites (e.g., Haroldson et al 2006, Giudice and Haroldson 2007). Next, we used a random multinomial distribution to allocate N i to nine sampling points ( j ) per site based on the distribution of total males detected per sampling event in our crowing surveys.…”

Section: Methodsmentioning

confidence: 99%

“…The Minnesota Department of Natural Resources (MNDNR) has historically used count indices to monitor statewide pheasant trends (e.g., Giudice and Haroldson 2007, Dexter 2012). The MNDNR has also used temporally replicated roadside counts (total number of pheasants observed per km driven) to evaluate pheasant habitat associations (Haroldson et al 2006, 2007). Harwood (2009) attempted to evaluate the male component of the roadside index by conducting both crowing counts (aural point counts) and roadside counts (strip‐transect survey) at 18 sites in southern Minnesota in 2007.…”

mentioning

confidence: 99%

See 1 more Smart Citation

Using time-of-detection to evaluate detectability assumptions in temporally replicated aural count indices: an example with Ring-necked Pheasants

Giudice

Haroldson

Harwood

et al. 2013

Journal of Field Ornithology

Self Cite

View full text Add to dashboard Cite

The validity of treating counts as indices to abundance is based on the assumption that the expected detection probability, E(p), is constant over time or comparison groups or, more realistically, that variation in p is small relative to variation in population size that investigators seek to detect. Unfortunately, reliable estimates of E(p) and var(p) are lacking for most index methods. As a case study, we applied the time-of-detection method to temporally replicated (within season) aural counts of crowing male Ring-necked Pheasants (Phasianus colchicus) at 18 sites in southern Minnesota in 2007 to evaluate the detectability assumptions. More specifically, we used the time-of-detection method to estimate E(p) and var(p), and then used these estimates in a Monte Carlo simulation to evaluate bias-variance tradeoffs associated with adjusting count indices for imperfect detection. The estimated mean detection probability in our case study was 0.533 (SE = 0.030) and estimated spatial variation in E(p) was 0.081 (95% CI: 0.057-0.126). On average, both adjusted (forp ) and unadjusted counts of crowing males qualitatively described the simulated relationship between pheasant abundance and grassland abundance, but the bias-variance tradeoff was smaller for adjusted counts (MSE = 0.003 vs. 0.045, respectively). Our case study supports the general recommendation to use, whenever feasible, formal population-estimation procedures (e.g., mark-recapture, distance sampling, double sampling) to account for imperfect detection. However, we caution that interpreting estimates of absolute abundance can be complicated, even if formal estimation methods are used. For example, the time-of-detection method was useful for evaluating detectability assumptions in our case study and the method could be used to adjust aural count indices for imperfect detection. Conversely, using the time-of-detection method to estimate absolute abundances in our case study was problematic because the biological populations and sampling coverage could not be clearly delineated. These estimation and inference challenges may also be important in other avian surveys that involve mobile species (whose home ranges may overlap several sampling sites), temporally replicated counts, and inexact sampling coverage.RESUMEN. El uso de tiempo de detección para evaluar la suposición de detectabilidad eń ındices de conteo auditivos temporalmente replicados: un ejemplo con Phasianus colchicus La validez de tratar los conteos comoíndices de abundancia se basa en la suposición de que la probabilidad de detección esperado, E(p), es constante a través del tiempo o entre grupos de comparación, o más realísticamente, que la variación en p es pequeño en relación a la variación en el tamaño de la población que los investigadores buscan detectar. Desafortunadamente, las estimaciones confiables de E(p) y var(p) son insuficientes para la mayoría de los métodos deíndice. Aplicamos el método de tiempo de detección a conteos auditivos temporalmente replicados (dentro de la temporada) de...

show abstract

Association of Ring-Necked Pheasant, Gray Partridge, and Meadowlark Abundance to Conservation Reserve Program Grasslands

Cited by 27 publications

References 17 publications

Songbird abundance in native and planted grassland varies with type and amount of grassland in the surrounding landscape

Songbird abundance in native and planted grassland varies with type and amount of grassland in the surrounding landscape

USDA conservation program and practice effects on wetland ecosystem services in the Prairie Pothole Region

Using time-of-detection to evaluate detectability assumptions in temporally replicated aural count indices: an example with Ring-necked Pheasants

Contact Info

Product

Resources

About