American Avocet (Recurvirostra americana)

Ackerman, Joshua T.; Hartman, C. Alex; Herzog, Mark P.; Takekawa, John Y.; Robinson, Julie A.; Oring, Lewis W.; Skorupa, Joseph P.; Boettcher, Ruth

doi:10.2173/bna.275

Cited by 23 publications

(28 citation statements)

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“…The models in the best subset only contained variables from the finest and intermediate scales, which suggest the largest scale effects are not influential to this species (Appendix 4). No data were available on home range size to support this finding (Robinson et al 1997). …”

Section: Habitat Modelsmentioning

confidence: 97%

“…This species is known for its association with wetland habitat for foraging and nesting (Robinson et al 1997), so its association at the larger landscape scale was not unexpected. The models in the best subset only contained variables from the finest and intermediate scales, which suggest the largest scale effects are not influential to this species (Appendix 4).…”

Section: Habitat Modelsmentioning

confidence: 98%

“…None of the focal species occur in the same range year round, so models must account for temporal differences in abundance and distribution across the study area. For example, the American Avocet occurs in the study region during the breeding season but not during the winter season (Robinson et al 1997). In addition, behavior also differs temporally among seasons.…”

Section: Birdsmentioning

confidence: 98%

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A Habitat-based Wind-Wildlife Collision Model with Application to the Upper Great Plains Region

Forcey¹

2012

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Executive SummaryWind energy is a rapidly growing and relatively clean source of renewable energy, which can ultimately meet growing demands for electricity in the US (Manville 2005). Despite the large potential for wind energy production in the US (AWEA 2009) and the minimal carbon emissions that occur from producing this power, the proliferation of wind energy has some drawbacks, including land disturbance caused by the installation of a wind facility, potential decline in aesthetics of a landscape, difficulty in attaining public acceptance, and threats to aerial and terrestrial wildlife (Kunz et al. 2007a;Kuvlesky et al. 2007). Wind project facilities pose two possible hazards to wildlife: the potential for mortality (i.e., collisions with wind turbines and associated power lines) and the potential for habitat effects (Kuvlesky et al. 2007). While both collisions and habitat effects can impact wildlife, this study examined collision hazards only; other studies currently being funded by the US Department of Energy (DOE) are examining habitat displacement effects.Most previous studies on collision impacts at wind facilities have taken place at the site-specific level and have only examined small-scale influences on mortality. In this study, we examine landscape-level influences using a hierarchical spatial model combined with existing datasets and life history knowledge for six bird and three bat species: Horned Lark, Red-eyed Vireo, Mallard, American Avocet, Golden Eagle, Whooping Crane, red bat, silver-haired bat, and hoary bat. These species were modeled in the central United States within Bird Conservation Regions 11, 17, 18, and 19 (NABCI 2012). For the bird species, we modeled bird abundance from existing datasets as a function of habitat variables known to be preferred by each species to develop a relative abundance prediction for each species. For bats, there are no existing abundance datasets so we identified preferred habitat in the landscape for each species and assumed that greater amounts of preferred habitat would equate to greater abundance of bats. The abundance predictions for bird and bats were modeled with additional exposure factors known to influence collisions such as visibility, wind, temperature, precipitation, topography, and behavior to form a final mapped output of predicted collision risk within the study region. Separate collision models were derived for each season given differences in habitat and behavior across seasons; season-specific models were combined to form a cumulative model representing collision risk throughout the year. To evaluate our collision predictions, we reviewed published mortality studies from wind farms in our study region and collected data on reported mortality of our focal species to compare to our modeled predictions. Because of the uncertainty with the degree to which abundance and exposure factors influence collision risk, we performed a sensitivity analysis evaluating model performance of 6 different scenarios where habitat and exposure factors were w...

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Section: Habitat Modelsmentioning

confidence: 97%

Section: Habitat Modelsmentioning

confidence: 98%

Section: Birdsmentioning

confidence: 98%

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A Habitat-based Wind-Wildlife Collision Model with Application to the Upper Great Plains Region

Forcey¹

2012

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“…Macroscopically, most shorebird breeding ecology studies have involved particular species in a single location or have focused on species of concern, like endangered piping plovers (Charadrius melodius) (Haig & Oring, 1985) and threatened snowy plovers (Warriner et al, 1986). However, microscopically, more recent research focuses on shorebirds nesting and post-nesting success, for example, natal dispersal of American avocets in California (Robinson & Oring, 1997). Bowen and Kruse examined habitat use and nesting success of upland sandpipers (Bartramia longicuda) in south-central North Dakota (Bowen & Kruse, 1993).…”

Section: Overview Of Previous Research On Shorebirdsmentioning

confidence: 99%

A Critique of Conservation and Management of Shore-nesting Birds

Li¹

2012

IJB

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Shorebirds are usually migratory animals that regularly travel between northern and southern parts of the world. In the past few decades, damage and alteration of habitat and the potential problem of population decrease have encouraged more and more people to attach great importance of the management of shorebirds on refuges, and to preserve for both breeding and migrating species. This dissertation chiefly examines the differences between chosen measures for shorebird protection and throws light upon potential knowledge gaps when it comes to management of those creatures. As a result, active measures that can be taken to make significant improvements, for example, learn to recognize potential nesting habitat and built viewing platforms to contain eco-tourists and promote sustainable development.

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“…This bird inhabits a wide variety of wetlands, freshwater and brackish, preferably shallow, and with fine sediment (Hamilton 1975, Robinson et al 1997, Danufsky and Colwell 2003; it preys upon a variety of invertebrates with its long, slender, recurved bill. During prealternate molt, the head becomes progressively cinnamon while the rest of the plumage remains light gray (Prater et al 1977).…”

Section: Introductionmentioning

confidence: 99%

Distribución invernal, densidad y estructura poblacional de Avoceta americana (Recurvirostra americana, Gmelin 1789) en Marismas Nacionales, Nayarit, México

Molina

Cavitt

Carmona

et al. 2017

Huitzil Rev. Mex. Ornitol.

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The Marismas Nacionales wetland system (Nayarit, Mexico) is a Site of International Importance as designated by the Western Hemispheric Shorebird Reserve Network. The American Avocet (Recurvirostra americana) is one of the most numerous shorebirds in the area; nevertheless, there is little information about its overwintering stay at Marismas Nacionales, despite part of the site being decreed as a Biosphere Reserve. In order to clarify some aspects of American Avocet winter ecology, we used transects and scanning sampling method during the winter: to determine distribution and abundance in the Marismas Nacionales (2010-2011), as well as density and population structure in one of the sectors of the Biosphere Reserve (2011-2013). The American Avocet wintering population in the Biosphere Reserve was calculated to be about 26,000 individuals (5.7% of the world’s population), but approximately 36% of avocet wintering population in Marismas Nacionales was outside of the reserve, also there was a certain preference for some wetlands. Evidence suggests that spring migration starts during the first weeks of March. We observed some spatial segregation between sexes, but our results, although valid, are inconclusive because of difficulties in sexing individuals in the field. In spite of local changes in these wetlands, American Avocet winter population has apparently been relatively stable over the last twenty years. Therefore, Marismas Nacionales remains a key wetland for American Avocet in North America.

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American Avocet (Recurvirostra americana)

Cited by 23 publications

References 0 publications

A Habitat-based Wind-Wildlife Collision Model with Application to the Upper Great Plains Region

A Habitat-based Wind-Wildlife Collision Model with Application to the Upper Great Plains Region

A Critique of Conservation and Management of Shore-nesting Birds

Distribución invernal, densidad y estructura poblacional de Avoceta americana (Recurvirostra americana, Gmelin 1789) en Marismas Nacionales, Nayarit, México

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