Clarification of a Technique for Analysis of Utilization-Availability Data

Byers, Celina; Steinhorst, R. Kirk; Krausman, Paul R.

doi:10.2307/3801467

Cited by 626 publications

(388 citation statements)

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“…If the expected value was within the confidence intervals, then I concluded that the habitat was used in proportion to its availability. If lower, then the habitat was selected, whereas if higher, then the habitat was avoided (Byers et al 1984). Habitat classes where there was no bat activity (i.e.…”

Section: Discussionmentioning

confidence: 99%

Habitat preferences of bats in anthropogenically altered, mosaic landscapes of northern Poland

Ciechanowski

2015

Eur J Wildl Res

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Few studies refer to the large-scale habitat preferences of bat assemblages in temperate mainland Europe. The study aimed at habitat associations of bats in the postglacial lakelands of northern Poland. Sixty-nine walking transects were divided into sections belonging to 36 habitat classes. Broadband ultrasound detectors were applied to record bat echolocation calls, identified to the species level by spectral analysis. Selection or avoidance of habitat categories was tested using Z statistic with a Bonferroni adjustment, and niche breadth was estimated by calculating Levin's formula and niche overlap-Pianka index. All bats (except Eptesicus serotinus) selected water bodies. They avoided arable land, coniferous and mixed forests, their edges and suburbs. Nyctalus noctula was the most eurytopic species, using most habitats in proportion to their availability. E. serotinus selected villages and roads in coniferous forests. Narrower habitat niches were occupied by morphologically similar pipistrelles. Pipistrellus pipistrellus preferred tree lines, Pipistrellus nathusii avoided tree lines and villages, and Pipistrellus pygmaeus preferred roads in deciduous forests but avoided tree lines. The most stenotopic Myotis sp. avoided roads in mixed and coniferous forests, tree lines and built-up areas. Most species strongly overlapped in habitat niches, and thus, their resource partitioning was probably based on using different hunting tactics. P. pygmaeus, although considered a sibling species of P. pipistrellus, overlapped in habitat niche much more with P. nathusii. In the latter case, resource partitioning may result from larger differences in body size and frequency of echolocation calls. The importance of water bodies for bats was higher than in Western Europe, and importance of woodland was lower, presumably due to much higher limnicity. The results provide a base for regionspecific landscape planning guidelines, applicable to bat conservation.

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Section: Discussionmentioning

confidence: 99%

Habitat preferences of bats in anthropogenically altered, mosaic landscapes of northern Poland

Ciechanowski

2015

Eur J Wildl Res

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“…We evaluated the differences in habitat use and availability by pack using contingency table analysis. We compared habitat use to habitat availability within the home range for each pack during each biological season using independent v 2 -tests and Bonferroni confidence intervals (Neu et al 1974;Byers et al 1984). Because the coyotes did not use diverse terrain (i.e., the valley is relatively flat), we were primarily interested in habitat use based on vegetation types, so the information added by using a resource selection function would have been superfluous.…”

Section: Habitat Use and Availabilitymentioning

confidence: 99%

Space use and social ecology of coyotes (Canis latrans) in a high-elevation ecosystem: relative stability in a changing environment

Gifford

Gese

Parmenter³

2016

J Ethol

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Coyote (Canis latrans) spatial and social ecology are variable, but have been little studied in high-elevation environments. In these temperate ecosystems, large ungulates are prevalent and coyote pack size may be large in order for them to scavenge and defend ungulate carcasses from conspecifics in neighboring packs. We initiated a study to understand the spatial and social ecology of coyotes on the Valles Caldera National Preserve, a high-elevation (2450-3400 m) protected area in northern New Mexico. Our objectives were to (1) describe the home range size and habitat use of coyotes in the preserve, (2) describe coyote movements within and outside of packs, and (3) to evaluate the relationship between coyote social cohesion and the amount of elk (Cervus elaphus) in the coyote diet. We acquired global positioning system and telemetry locations from 33 coyotes from August 2005 to July 2009. We classified 23 coyotes (70 % of individuals) as residents (i.e., territorial) during at least part of the study and ten coyotes (30 %) as transients. Overall mean home range size of resident packs was 10.6 ± 2.2 (SD) km 2 . Home range size varied between packs, but did not vary by season or year. Coyotes used dry and wet meadow habitats as expected based on availability; coyotes used riparian habitat more than expected, and forests less than expected. Social cohesion did not vary among biological seasons. Alpha coyotes were more socially cohesive with each other than with other pack members, and a transient exhibited temporal-spatial avoidance of pack members while inside the pack's territory followed by integration into the pack. Contrary to expectations, we found no relationship between coyote social cohesion and the proportion of elk in coyote diets. We concluded that coyote space use and sociality on the preserve were relatively stable year-round despite changes in biological needs, snow depth, and utilization of variously sized prey.

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“…A partir do teste do qui-quadrado de qualidade de ajustamento ("chi-square goodness-of-fit test") e posterior estimativa do intervalo simultâneo de confiança de Bonferroni (Byers et al, 1984), foi possível verificar de maneira significativa, mesmo com um baixo número de registros (n=44), que a única classe de uso preferida pelo veado-catingueiro foi a MC e, de maneira contrária, houve rejeição à classe CJSC (Tabs I, II).…”

Section: Resultsunclassified

“…Para avaliar se houve uso desproporcional das classes pelo veado-catingueiro em relação à disponibilidade das mesmas, utilizou-se o teste do qui-quadrado de qualidade de ajustamento ("chisquare goodness-of-fit test") e posterior estimativa do intervalo simultâneo de confiança de Bonferroni (Byers et al, 1984). Considerou-se que houve seleção quando o uso foi desproporcional à disponibilidade (seleção de 3ª ordem, Johnson, 1980).…”

Section: Methodsunclassified

Uso de áreas agrícolas por Mazama gouazoubira (Mammalia, Cervidae) no Estado de São Paulo

Rodrigues

Cerveira

Duarte

2014

Iheringia, Sér. Zool.

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O veado-catingueiro, Mazama gouazoubira (Fischer, 1814) é a espécie mais abundante de cervídeo do Brasil e suas populações têm resistido a alterações antrópicas consideráveis e ocupam regularmente áreas modificadas. Pouco se sabe sobre o uso de ambientes agrícolas pela espécie, portanto, este trabalho teve por objetivo analisar a preferência de uso do hábitat por M. gouazoubira em um agrossistema dedicado à produção de cana-de-açúcar. O trabalho foi desenvolvido na Fazenda Santa Cecília, município de Jaboticabal, região nordeste do estado de São Paulo, entre fevereiro de 2011 e janeiro de 2012. A área de estudo abrange cerca de 185 ha, cujas formações podem ser classificadas em plantios de cana-de-açúcar nos estágios (i) adulto (1 a 3 m altura), (ii) jovem (até 1 m) e sem cana (pós-safra), além de (iii) eucalipto e (iv) remanescentes de mata ciliar. Os registros foram obtidos percorrendo-se a pé os aceiros entre os talhões cultivados e o perímetro da área, totalizando 204 km percorridos em busca de pegadas e visualizações. A amostragem foi realizada mensalmente, com duração de dois dias consecutivos, entre 6h e 9h, e para cada registro obteve-se a coordenada geográfica e o tipo de vegetação do entorno. Considerando a rotatividade das culturas anuais, foi estimada a disponibilidade total, em hectares, de cada formação vegetacional ao longo do período de amostragem. Foram obtidos 44 registros, sendo que M. gouazoubira evitou o uso das áreas com cana jovem e sem cana e preferiu ambientes próximos à mata ciliar e aos plantios de eucalipto. Estes resultados sugerem que, embora M. gouazoubira apresente grande plasticidade ecológica, existe preferência por ambientes florestais, sugerindo que um mosaico como o encontrado no presente projeto pode sustentar populações da espécie.

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Clarification of a Technique for Analysis of Utilization-Availability Data

Cited by 626 publications

References 0 publications

Habitat preferences of bats in anthropogenically altered, mosaic landscapes of northern Poland

Habitat preferences of bats in anthropogenically altered, mosaic landscapes of northern Poland

Space use and social ecology of coyotes (Canis latrans) in a high-elevation ecosystem: relative stability in a changing environment

Uso de áreas agrícolas por Mazama gouazoubira (Mammalia, Cervidae) no Estado de São Paulo

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