Distance Sampling

Buckland, Stephen T.; Anderson, David R.; Burnham, Kenneth P.; Laake, Jeffrey L.

doi:10.1007/978-94-011-1572-8

Cited by 454 publications

(184 citation statements)

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“…Density estimates were calculated using the program DISTANCE. 15 From mid-May to early July in each year, nests were located by systematic searching and observation of territorial birds and were visited at 3-5 day intervals to monitor nesting success. No attempt was made to monitor later nests.…”

Section: Study Area and Methodsmentioning

confidence: 99%

Breeding ecology of farmland YellowhammersEmberiza citrinella

Stoate¹,

Moreby²,

Szczur³

1998

Bird Study

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Section: Study Area and Methodsmentioning

confidence: 99%

Breeding ecology of farmland YellowhammersEmberiza citrinella

Stoate¹,

Moreby²,

Szczur³

1998

Bird Study

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“…distance allows a number of different detection models and series expansions to be fitted to the data (Buckland et al 2001(Buckland et al , 2004. To overcome potential problems of over fitting the model to the data, the definitions were confined to either a half-normal or uniform model, both with no series expansion.…”

Section: Estimating Densitymentioning

confidence: 99%

Exploring the effects of truncated, pooled and sexed data in distance sampling estimation of breeding bird abundance

Stanbury

Gregory

2009

Bird Study

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“…Summer surveys were not conducted from 1987 to 1990, and there was only one summer flight in 1991, on 31 August. Sightings made during randomly derived transect legs are considered a random sample (Buckland et al, 1993) and are hereafter called transect-sightings (t-SI), each of which represents the location of one or several animals. The number of t-SI, not the total number of whales, was used in all analyses because circling to obtain "best estimates" of group size was seldom conducted.…”

Section: Available Data and Statistical Approachmentioning

confidence: 99%

Cetacean Habitat Selection in the Alaskan Arctic during Summer and Autumn

Moore¹,

DeMaster²,

Dayton³

2000

ARCTIC

118

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ABSTRACT. Ten years of sighting data from aerial surveys offshore of northern Alaska were analyzed to investigate seasonal variability in cetacean habitat selection. Distinct habitats were described for bowhead whales (Balaena mysticetus), white whales (Delphinapterus leucas), and gray whales (Eschrichtius robustus) on the basis of habitat selection ratios calculated for bathymetric and ice cover regimes. In summer, bowheads selected continental slope waters and moderate ice conditions; white whales selected slope and basin waters and moderate to heavy ice conditions; and gray whales selected coastal/shoal waters and open water. In autumn, bowheads selected inner shelf waters and light ice conditions; white whales selected outer shelf and slope waters and moderate to heavy ice; and gray whales selected coastal and shoal/trough habitats in light ice and open water. Habitat differences among species were significant in both seasons (ANOVA F > 28, p < 0.00001). Interseasonal depth and ice cover habitats were significantly different for bowhead whales (p < 0.00002), but not for gray whales (p > 0.35). White whale depth habitat was significantly different between seasons (p < 0.00002), but ice cover habitat was not (p < 0.08).Key words: Alaska, Arctic, Beaufort Sea, bowhead whale, Chukchi Sea, gray whale, habitat selection, white whale RÉSUMÉ. Des données d'observation réalisées sur dix années (1982 -1991) grâce à des relevés aériens au large de l'Alaska septentrional ont été analysées dans le cadre de recherches sur la variabilité saisonnière dans la sélection de l'habitat des cétacés. On a décrit des habitats distincts pour la baleine boréale (Balaena mysticetus), la baleine blanche (Delphinapterus leucas) et la baleine grise de Californie (Eschrichtius robustus) en se fondant sur les taux de sélection de l'habitat calculés pour le régime bathymétrique et celui de la couverture de glace. En été, la baleine boréale choisissait les eaux de la pente continentale et des conditions de glace modérée; la baleine blanche choisissait les eaux de la pente continentale et du bassin océanique, et des conditions de glace allant de modérée à épaisse; et la baleine grise choisissait des eaux côtières et de hauts-fonds ainsi que l'eau libre. En automne, la baleine boréale choisissait les eaux intérieures du plateau continental, où se trouvait une faible concentration de glace; la baleine blanche choisissait les eaux à l'extérieur du plateau et sur la pente, ainsi qu'une glace allant de modérée à épaisse; et la baleine grise choisissait des habitats côtiers et de hauts-fonds ou des fossés à faible concentration de glace et à eau libre. Les différences d'habitat entre les espèces étaient importantes durant les deux saisons (ANOVA F > 28, p < 0,00001). D'une saison à une autre, les habitats différaient sensiblement quant à la profondeur et à la couverture de glace pour la baleine boréale (p < 0,00002), mais pas pour la baleine grise (p > 0,35). La profondeur de l'habitat pour la baleine blanche variait sensiblement d'une saison à u...

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Distance Sampling

Cited by 454 publications

References 0 publications

Breeding ecology of farmland YellowhammersEmberiza citrinella

Breeding ecology of farmland YellowhammersEmberiza citrinella

Exploring the effects of truncated, pooled and sexed data in distance sampling estimation of breeding bird abundance

Cetacean Habitat Selection in the Alaskan Arctic during Summer and Autumn

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