The role of landscape and habitat characteristics in limiting abundance of grassland nesting songbirds in an urban open space

Haire, Sandra L.; Bock, Carl E.; Cade, Brian S.; Bennett, Barry

doi:10.1016/s0169-2046(00)00044-x

Cited by 48 publications

(34 citation statements)

References 27 publications

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“…For example, Haire et al (2000) found that grassland nesting songbirds decreased in abundance in more urban habitats. In contrast, robins, starlings, grackles, house finches and house sparrows were almost five times as abundant in urban edge plots as remote (interior) plots (Bock et al 1995.…”

Section: Discussionmentioning

confidence: 99%

“…In 1994, Bock and Bock (1994) established a set of grassland biodiversity plots that have been used by various researchers to look for patterns of species composition associated with urbanization. Researchers using these plots have examined raptor (Berry et al 1998), grasshopper (Craig et al 1999), songbird (Haire et al 2000), rodent , and butterfly (Collinge et al 2003) communities. The vegetation of these plots has also been catalogued and plant species have been assigned importance indices based on percentage cover in the plots (Bennett 1997).…”

Section: Introductionmentioning

confidence: 99%

“…The vegetation of these plots has also been catalogued and plant species have been assigned importance indices based on percentage cover in the plots (Bennett 1997). The plots have been characterized as ''urban'' or ''remote'' and evaluated for multiple habitat characteristics (Haire et al 2000). Urban plots bordered on areas of human activity (within 100 m) and remote plots were surrounded by more natural habitat (750 m and greater from development; Bock et al 2002).…”

Section: Introductionmentioning

confidence: 99%

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Environmental factors affecting bee diversity in urban and remote grassland plots in Boulder, Colorado

2009

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Insects provide essential ecological services in both the natural environment and in human-dominated habitats. Because pollinator declines associated with land use change have been reported across the globe, there is great concern that pollinators and the ecosystem services they provide will be negatively affected. This study examines the diversity and abundance of bee pollinators in grasslands in Boulder County, Colorado, USA. Over five years, 5,200 bees were collected in grassland plots with different levels of urbanization. Most of the difference in species composition among three levels of urbanization was due to rare species that may not have been discovered in all plots. Neither the number of species nor their abundance differed significantly among the plot types, although the trend indicated increasing diversity with increasing distance from urbanization. Most notably, measures of urbanization, such as the amount of pavement and development, were not correlated with diversity. The most important factor affecting bee abundance, particularly for ground-nesting bees, was grazing regime. Bee abundance also was positively related to the number of flowering plant species. Other studies of different insects (grasshoppers and butterflies) in these plots showed results similar to ours. In contrast, previous studies on song-birds, raptors, and rodents showed significant differences between urban edge and remote plots in terms of organism abundance and diversity. Together, these results suggest that factors other than the degree of urbanization are important in determining insect abundance and diversity.

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Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Environmental factors affecting bee diversity in urban and remote grassland plots in Boulder, Colorado

2009

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“…Species with other habitat affinities may show similar patterns. Haire et al (2000) examined grassland open spaces of Boulder, Colorado, and found that the amount of urban development within a 96-acre landscape centered on the grassland was negatively related to abundance of several grassland-nesting birds. Accounting for potential impacts of urbanization on remnant habitats is especially important given the affinity of the public to live near forested areas (e.g., Kaplan and Austin 2004), which can result in comparably higher development rates near parks, state forests, and other natural areas.…”

Section: Plan Explicitly For Open Spaces and Natural Habitats Within mentioning

confidence: 99%

Conserving Biodiversity in Urbanizing Areas: Nontraditional Views from a Bird's Perspective

Marzluff¹,

Rodewald²

2008

CATE

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We review common population and community-level responses of wildlife to urbanization, and discuss how: (1) the amount and configuration of land cover and land use, and (2) the alteration of resources (e.g., type of vegetation, presence of food and water) and processes (e.g., natural disturbance regimes, species interactions, intensity of human recreation) within built environments influence animals, with special emphasis on birds. Although each landscape presents unique opportunities and constraints, we suggest that all urban areas have the potential to contribute to the conservation of biodiversity. The ecological value of urban areas may be promoted if planners, managers, and homeowners consider ways to (1) encourage retention and protection of natural habitats within urbanizing landscapes, (2) plan explicitly for open spaces and natural habitats within new subdivisions, (3) use a variety of arrangements of built and open space within developments, (4) enhance and restore habitat within open spaces, (5) improve quality of developed lands (i.e., the urban matrix) rather than directing management efforts only towards parks, reserves, and open areas, and (6) celebrate urban biological diversity to foster connections between people and their natural heritage.

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“…Although these declines have largely been attributed to the conversion of grasslands to agriculture followed by the large-scale intensification and homogenization of agricultural environments (Herkert 1994, Peterjohn andSauer 1999), grassland birds have also been observed to respond negatively to urbanization (Bock et al 1999, Engle et al 1999, Haire et al 2000 and increases in wooded lands (Bakker et al 2002). One reason for this trend might be the intensive vegetation management regimes that are common within urban grasslands.…”

Section: Introductionmentioning

confidence: 99%

Managing urban and rural rights-of-way as potential habitats for grassland birds

Leston¹,

Koper²

2017

ACE

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ABSTRACT. Urban grassy rights-of-way (ROWs) such as along transmission lines could be managed cumulatively as collections of potential grassland habitats to contribute to the conservation of grassland birds. To optimize conservation opportunities, managing urban ROWs for grassland birds may require reductions in frequent mowing and spraying and may also depend on the suitability of landscape structure within the urban environment. We compared effects of mowing regime relative to effects of the matrix surrounding ROWs on grassland bird abundance and occupancy along 48 ROWs in and surrounding Winnipeg, Manitoba, in 2007-2009. We used both hierarchical distance-sampling and multiseason occupancy modeling methods to account for effects of urbanization (e.g., traffic noise), observer experience, time of season, and survey time in the morning on the probability of detecting birds at study sites. We did not find differences in detection of grassland birds due to urbanization, but we did find effects of time of season, survey time in the morning, and observer experience. After accounting for availability, we found that several species declined along ROWs that were surrounded by more urban or wooded land. Western Meadowlark occupancy increased as the amount of grassland within 100 m of ROWs increased. Savannah Sparrow showed some evidence of increasing with mowing, whereas Clay-colored Sparrow showed some evidence of decreasing with mowing, although these species and Western Meadowlark also increased within hayed ROWs. We conclude that urban ROWs managed as grassland bird habitats will probably attract more individuals and species if there is less nearby urban or wooded land and more grassland, and within which there is a mixture of unmowed and hayed ROW sections. Aménagement d'emprises en milieu urbain et rural comme habitat potentiel d'oiseaux champêtresRÉSUMÉ. Les emprises herbeuses en milieu urbain, telles que celles des lignes de transport d'électricité, pourraient être cumulativement aménagées en un ensemble de milieux de prairie potentiels afin de contribuer à la conservation des oiseaux champêtres. En vue d'optimiser les occasions de conservation, l'aménagement des emprises urbaines pour ces oiseaux pourrait nécessiter une diminution de la fréquence du fauchage et de l'épandage, et pourrait aussi dépendre du caractère propice de la structure de paysage dans l'environnement urbain. Nous avons comparé les effets du régime de fauchage en fonction des effets de la matrice environnant les emprises sur l'occurrence et l'abondance d'oiseaux champêtres le long de 48 emprises situées à Winnipeg et ses environs, au Manitoba, en 2007Manitoba, en -2009. Afin de prendre en compte les effets de l'urbanisation (p. ex. bruit de la circulation), de l'expérience de l'observateur, du moment dans la saison et de l'heure de l'inventaire sur la probabilité de détecter les oiseaux aux sites d'étude, nous avons utilisé deux méthodes de modélisation : à partir de l'échantillonnage par distance hiérarchique et de la présence multisaisonn...

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The role of landscape and habitat characteristics in limiting abundance of grassland nesting songbirds in an urban open space

Cited by 48 publications

References 27 publications

Environmental factors affecting bee diversity in urban and remote grassland plots in Boulder, Colorado

Environmental factors affecting bee diversity in urban and remote grassland plots in Boulder, Colorado

Conserving Biodiversity in Urbanizing Areas: Nontraditional Views from a Bird's Perspective

Managing urban and rural rights-of-way as potential habitats for grassland birds

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