Taxonomic recommendations for British birds: eighth report

Sangster, George; Collinson, J. Martin; Crochet, Pierre André; Knox, Alan G.; Parkin, David T.; Votier, Stephen C.

doi:10.1111/j.1474-919x.2012.01273.x

Cited by 73 publications

(43 citation statements)

References 74 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Here we present a case study for estimating the population size of Cory's shearwater (Calonectris borealis, recently split from C. diomedea (Sangster et al 2012)) nesting on a rugged island in the Azores archipelago in the North Atlantic Ocean. The Azores are estimated to hold a significant proportion of the Cory's shearwater world population, with a breeding population between 49.500 and 89.000 pairs (Monteiro et al 1996).…”

Section: Introductionmentioning

confidence: 99%

Estimating population size of a nocturnal burrow-nesting seabird using acoustic monitoring and habitat mapping

Oppel¹,

Hervías²,

Oliveira³

et al. 2014

View full text Add to dashboard Cite

Estimating population size of a nocturnal burrow-nesting seabird using acoustic monitoring and habitat mapping. Nature Conservation 7: 1-13. doi: 10.3897/natureconservation.7.6890 Abstract Population size assessments for nocturnal burrow-nesting seabirds are logistically challenging because these species are active in colonies only during darkness and often nest on remote islands where manual inspections of breeding burrows are not feasible. Many seabird species are highly vocal, and recent technological innovations now make it possible to record and quantify vocal activity in seabird colonies. Here we test the hypothesis that remotely recorded vocal activity in Cory's shearwater (Calonectris borealis) breeding colonies in the North Atlantic increases with nest density, and combined this relationship with cliff habitat mapping to estimate the population size of Cory's shearwaters on the island of Corvo (Azores). We deployed acoustic recording devices in 9 Cory's shearwater colonies of known size to establish a relationship between vocal activity and local nest density (slope = 1.07, R 2 = 0.86, p < 0.001). We used this relationship to predict the nest density in various cliff habitat types and produced a habitat map of breeding cliffs to extrapolate nest density around the island of Corvo. The mean predicted nest density on Corvo ranged from 6.6 (2.1-16.2) to 27.8 (19.5-36.4) nests/ha. Extrapolation of habitat-specific nest densities across the cliff area of Corvo resulted in an estimate of 6326 Cory's shearwater nests (95% confidence interval: 524). This population size estimate is similar to previous assessments, but is too imprecise to detect moderate changes in population size over time. While estimating absolute population size from acoustic recordings may not be sufficiently precise, the strong positive relationship that we found between local nest density and recorded calling rate indicates that passive acoustic monitoring may be useful to document relative changes in seabird populations over time. RESEARCH ARTICLE Launched to accelerate biodiversity conservation A peer-reviewed open-access journalSteffen Oppel et al. / Nature Conservation 7: 1-13 (2014) 2

show abstract

Section: Introductionmentioning

confidence: 99%

Estimating population size of a nocturnal burrow-nesting seabird using acoustic monitoring and habitat mapping

Oppel¹,

Hervías²,

Oliveira³

et al. 2014

View full text Add to dashboard Cite

show abstract

“…These are two closely related medium-sized petrel species that breed in the northern hemisphere waters during summer and migrate south for wintering (Dias et al, 2011;Ristow et al, 2000). Until 2012, they were considered a single species (Sangster et al, 2012), so their employment as model species allows a direct comparison of the response to DMS in different habitats. Cory's shearwater (Calonectris borealis Cory 1881), breeds in north Atlantic islands and migrates to different areas of both hemispheres of the Atlantic Ocean (Dias et al, 2011), while the Scopoli's shearwater (Calonectris diomedea Scopoli, 1769) breeds in the Mediterranean Sea and migrates to the Atlantic Ocean during winter (Brooke, 2004;Ristow et al, 2000).…”

Section: Introductionmentioning

confidence: 99%

Olfactory foraging in temperate waters: Sensitivity to dimethylsulfide by shearwaters in the Atlantic Ocean and Mediterranean Sea

Dell’Ariccia

Célérier

Gabirot

et al. 2014

Journal of Experimental Biology

View full text Add to dashboard Cite

Many procellariiforms use olfactory cues to locate food patches over the seemingly featureless ocean surface. In particular, some of them are able to detect and are attracted by dimethylsulphide (DMS), a volatile compound naturally occurring over worldwide oceans in correspondence with productive feeding areas. However, current knowledge is restricted to sub-Antarctic species and to only one study realized under natural conditions at sea. Here, for the first time, we investigated the response to DMS in parallel in two different environments in temperate waters, the Atlantic Ocean and the Mediterranean Sea, employing Cory's (Calonectris borealis) and Scopoli's (Calonectris diomedea) shearwaters as models. To test whether these birds can detect and respond to DMS, we presented them with this substance in a Y-maze. Then, to determine whether they use this molecule in natural conditions, we tested the response to DMS at sea. The number of birds that chose DMS in the Y-maze and that were recruited at DMS-scented slicks at sea suggests that these shearwaters are attracted to DMS in both non-foraging and natural contexts. Our findings show that the use of DMS as a foraging cue may be a strategy adopted by procellariiforms across oceans but that regional differences may exist, giving a worldwide perspective to previous hypotheses concerning the use of DMS as a chemical cue.

show abstract

“…Among Procellariiformes, Cory's shearwater, Calonectris borealis (Sangster et al, 2012), is a good candidate for studying oceanic navigation, as most of the populations of this species nest on small oceanic islands in the North-Eastern Atlantic Ocean and then disperse widely during their post-breeding migration (Dias et al, 2011;González-Solís et al, 2007). In order to test the role of geomagnetic and olfactory information in Cory's shearwater navigation, we displaced -in the open ocean -adult birds subjected to a magnetic disturbance ('magnetic' birds), birds subjected to olfactory deprivation ('anosmic' birds) and untreated control birds.…”

Section: Introductionmentioning

confidence: 99%

Oceanic navigation in Cory's shearwaters: evidence for a crucial role of olfactory cues for homing after displacement

Gagliardo

Bried

Lambardi

et al. 2013

Journal of Experimental Biology

118

121

View full text Add to dashboard Cite

SUMMARYPelagic birds, which wander in the open sea most of the year and often nest on small remote oceanic islands, are able to pinpoint their breeding colony even within an apparently featureless environment, such as the open ocean. The mechanisms underlying their surprising navigational performance are still unknown. In order to investigate the nature of the cues exploited for oceanic navigation, Cory's shearwaters, Calonectris borealis, nesting in the Azores were displaced and released in open ocean at about 800km from their colony, after being subjected to sensory manipulation. While magnetically disturbed shearwaters showed unaltered navigational performance and behaved similarly to unmanipulated control birds, the shearwaters deprived of their sense of smell were dramatically impaired in orientation and homing. Our data show that seabirds use olfactory cues not only to find their food but also to navigate over vast distances in the ocean. Supplementary material available online at

show abstract

Taxonomic recommendations for British birds: eighth report

Cited by 73 publications

References 74 publications

Estimating population size of a nocturnal burrow-nesting seabird using acoustic monitoring and habitat mapping

Estimating population size of a nocturnal burrow-nesting seabird using acoustic monitoring and habitat mapping

Olfactory foraging in temperate waters: Sensitivity to dimethylsulfide by shearwaters in the Atlantic Ocean and Mediterranean Sea

Oceanic navigation in Cory's shearwaters: evidence for a crucial role of olfactory cues for homing after displacement

Contact Info

Product

Resources

About