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Limited By:	Author = Kane, Adam;

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A recipe for scavenging in vertebrates - the natural history of a behaviour (2016)

Kane, Adam; Healy, Kevin; Guillerme, Thomas; Ruxton, Graeme D.; Jackson, Andrew L.

A recipe for scavenging in vertebrates - the natural history of a behaviour (2016)

Kane, Adam; Healy, Kevin; Guillerme, Thomas; Ruxton, Graeme D.; Jackson, Andrew L.

Abstract:

Despite its prevalence, the importance of scavenging to carnivores is difficult to ascertain in modern day forms and impossible to study directly in extinct species. Yet, there are certain intrinsic and environmental features of a species that push it towards a scavenging lifestyle. These can be thought of as some of the principal parameters in optimal foraging theory namely, encounter rate and handling time. We use these components to highlight the morphologies and environments that would have been conducive to scavenging over geological time by focusing on the dominant vertebrate groups of the land, sea and air. The result is a synthesis on the natural history of scavenging. The features that make up our qualitative scale of scavenging can be applied to any given species and allow us to judge the likely importance of this foraging behaviour.

http://hdl.handle.net/10468/3213

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Assessing the effectiveness of foraging radius models for seabird distributions using biotelemetry and survey data (2019)

Critchley, Emma Jane; Grecian, W. J.; Bennison, Ashley; Kane, Adam; Wischnewski, Saskia...

Assessing the effectiveness of foraging radius models for seabird distributions using biotelemetry and survey data (2019)

Critchley, Emma Jane; Grecian, W. J.; Bennison, Ashley; Kane, Adam; Wischnewski, Saskia; Cañadas, A.; Tierney, D.; Quinn, John L.; Jessopp, Mark J.

Abstract:

Relatively simple foraging radius models have the potential to generate predictive distributions for a large number of species rapidly, thus providing a cost‐effective alternative to large‐scale surveys or complex modelling approaches. Their effectiveness, however, remains largely untested. Here we compare foraging radius distribution models for all breeding seabirds in Ireland, to distributions of empirical data collected from tracking studies and aerial surveys. At the local/colony level, we compared foraging radius distributions to GPS tracking data from seabirds with short (Atlantic puffin Fratercula arctica, and razorbill Alca torda) and long (Manx shearwater Puffinus puffinus, and European storm‐petrel Hydrobates pelagicus) foraging ranges. At the regional/national level, we compared foraging radius distributions to extensive aerial surveys conducted over a two‐year period. Foraging radius distributions were significantly positively correlated with tracking data for all specie...

http://hdl.handle.net/10468/9346

Marked Mark

Seabed image acquisition and survey design for cold water coral mound characterisation (2017)

Lim, Aaron; Kane, Adam; Arnaubec, Aurélien; Wheeler, Andrew J.

Seabed image acquisition and survey design for cold water coral mound characterisation (2017)

Lim, Aaron; Kane, Adam; Arnaubec, Aurélien; Wheeler, Andrew J.

Abstract:

Cold-water coral (CWC) habitats are commonly regarded as hotspots of biodiversity in the deep-sea. However, a standardised approach to monitoring the effects of climate change, anthropogenic impact and natural variability through video-surveying on these habitats is poorly-established. This study is the first attempt at standardising a cost-effective video-survey design specific to small CWC mounds in order to accurately determine the proportion of facies across their surface. The Piddington Mound of the Moira Mounds, Porcupine Seabight, offshore Ireland has been entirely imaged by downward-facing video in 2011 and 2015. The 2011 video data is navigated into a full-mound, georeferenced video mosaic. A quadrat-based manual classification of this video mosaic at 0.25 m2 resolution shows the exact proportion of facies abundance across the mound surface. The minimum number of random downward-facing images from the mound are determined to accurately characterise mound surface facies prop...

http://hdl.handle.net/10468/5199

Marked Mark

Spatially explicit poisoning risk affects survival rates of an obligate scavenger (2018)

Monadjem, A.; Kane, Adam; Botha, A.; Kelly, C.; Murn, C.

Spatially explicit poisoning risk affects survival rates of an obligate scavenger (2018)

Monadjem, A.; Kane, Adam; Botha, A.; Kelly, C.; Murn, C.

Abstract:

Obligate scavengers such as vultures provide critical ecosystem services and their populations have undergone severe declines in Asia and Africa. Intentional poisoning is a major threat to vultures in Africa, yet the impact on vulture populations of where poisoned carcasses are positioned is not known. We used re-sightings of 183 African white-backed vultures captured and tagged in two regions of South Africa, some 200 km apart, to estimate spatial differences in relative survival rates across life stages. Juvenile survival rates were similar in the two regions, whilst subadult and adult survival rates differed significantly. Using agent-based modelling, we show that this pattern of relative survival rates is consistent between regions that differ in intensity of poisoning, despite the proximity of the two regions. This may have important consequences for vulture conservation and the targeting of conservation efforts, particularly with regard to the efficacy of "vulture safe zo...

http://hdl.handle.net/10468/5932

Marked Mark

The ecology of obligate scavengers from individual behaviour to population dynamics (2015)

Kane, Adam

The ecology of obligate scavengers from individual behaviour to population dynamics (2015)

Kane, Adam

Abstract:

THESIS 10490
Studies on vultures are on the rise, and just as well given the sharp declines in many of the 23 species. Indeed it seems these population crashes are responsible for this research boost. However, there remain obvious gaps in our knowledge when it comes to the world's only terrestrial example of vertebrate obligate scavengers. It has been suggested that a human aversion to carrion is one of the reasons scavengers are reviled by the public and understudied by science. Broadly, the following body of work is an attempt to fill in some of these gaps.

http://hdl.handle.net/2262/80084

Displaying Results 1 - 5 of 5 on page 1 of 1