Declining trends in the majority of Greenland’s thick-billed murre (Uria lomvia) colonies 1981–2011

Merkel, Flemming; Labansen, Aili Lage; Boertmann, David; Mosbech, Anders; Egevang, Carsten; Falk, Knud; Linnebjerg, Jannie Fries; Frederiksen, Morten; Kampp, Kaj

doi:10.1007/s00300-014-1500-3

Cited by 32 publications

(37 citation statements)

References 26 publications

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“…Again, the large difference may be caused by a geographical shift within the total winter distribution range, of which we covered only a minor part in both years, or it may be a result of a true population decline. In this case, the large decline in the coastal survey area does indeed coincide with evidence of a significant decline among the breeding populations in Greenland, Iceland and Svalbard, which all contribute to the winter population in south-west Greenland (Descamps et al 2013;Merkel et al 2014). Our lack of observations is also in line with local knowledge from hunters, which state that they more often than in the past need to travel far offshore to shoot murres (Haastrup 2017).…”

Section: Apparent Changes In Distribution and Abundancesupporting

confidence: 75%

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Wintering seabirds in south-west Greenland, 2017

et al. 2019

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Section: Apparent Changes In Distribution and Abundancesupporting

confidence: 75%

“…For the thick-billed murre, hunting is still a conservation concern. Despite a reduction to approximately one-third of previous hunting levels, there are still no signs of recovery among breeding populations of this species (Descamps et al 2013;Merkel et al 2014).…”

Section: Concerns and Recommendationsmentioning

confidence: 99%

Wintering seabirds in south-west Greenland, 2017

et al. 2019

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“…For example, Thick-billed Murre Uria lomvia populations are increasing in Canada (Gaston et al, 2012) but declining in Greenland (Merkel et al, 2014), while Lesser Black-backed Gulls are increasing in Greenland (Boertmann, 2008) and Ivory Gulls Pagophila eburnea have declined in both Canada and Greenland (Gilg et al, 2009). Black-legged Kittiwake Rissa tridactyla numbers have declined in Greenland (Labansen et al, 2010), Norway (Krasnov et al, 2007;Cury et al, 2011), and northwestern Russia (Krasnov et al, 2007), but in Arctic Canada they are apparently increasing (Mallory et al, 2009b).…”

Section: Discussionmentioning

confidence: 99%

The Status of Glaucous Gulls <i>Larus hyperboreus</i> in the Circumpolar Arctic

Petersen¹,

Irons²,

Gilchrist³

et al. 2015

ARCTIC

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ABSTRACT. The entire world population of the Glaucous Gull Larus hyperboreus breeds in the circumpolar Arctic. Some local populations appear to be declining significantly. In this paper, we summarize the current state of knowledge on Glaucous Gull populations and trends. The total Arctic population is estimated at 138 600 to 218 600 breeding pairs (277 200 to 437 200 breeding individuals) distributed among at least 2768 colonies (many not documented). Population declines may be attributable to egg harvest, contaminants, or food shortages, but other factors operating outside the breeding season should not be excluded. We recommend collaborative conservation efforts that will include better population estimates in most countries, as well as standardized monitoring programs.Key words: Glaucous Gull; Larus hyperboreus; Arctic; population status; population trends; monitoring; conservation concerns RÉSUMÉ. Toute la population mondiale de goélands bourgmestres Larus hyperboreus se reproduit dans l'Arctique circumpolaire. Certaines populations locales semblent diminuer considérablement. Dans cette communication, nous résumons l'état actuel des connaissances sur les populations et les tendances concernant le goéland bourgmestre. La population arctique totale est estimé de 138 600 à 218 600 couples reproducteurs (de 277 200 à 437 200 individus reproducteurs) répartis dans au moins 2 768 colonies (dont grand nombre n'ont pas été consignées). Les déclins de population peuvent être attribuables à la récolte des oeufs, aux contaminants ou aux pénuries de nourriture, bien qu'il ne faille pas exclure d'autres facteurs ne se rapportant pas à la saison de reproduction. Nous recommandons des efforts de conservation communs qui comprendront de meilleures estimations de population dans la plupart des pays de même que des programmes de surveillance normalisés.

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“…From the continuous time series of overview and high‐resolution images, classical population and phenology parameters can be easily extracted, such as arrival date for breeding, laying, hatching and fledging, as well as the annual breeding success, population size, or the proportion of individuals in a specific state. Previous studies that would have benefited from such continuous time series include studies in bird colonies, such as thick‐billed murres Uria lomvia (Merkel et al., ), lesser flamingos Phoeniconaias minor (Kaggwa, Gruber, Oduor, & Schagerl, ) and cape gannets Morus capensis (Mullers & Navarro, ). Continuous biological time series, in particular those that span over several years or decades, are scarce but are critical for population modelling to evaluate current and future trends, and to estimate the adaptive capacities of a species to cope with natural and anthropogenic environmental changes.…”

Section: Discussionmentioning

confidence: 99%

“…From the continuous time series of overview and high-resolution images, classical population and phenology parameters can be easily extracted, such as arrival date for breeding, laying, hatching and fledging, as well as the annual breeding success, population size, or the proportion of individuals in a specific state. Previous studies that would have benefited from such continuous time series include studies in bird colonies, such as thick-billed murres Uria lomvia (Merkel et al, 2014), lesser flamingos Phoeniconaias minor (Kaggwa, Gruber, Oduor, & Schagerl, 2013) and cape gannets Morus capensis (Mullers & Navarro, 2010).…”

Section: Relevance and Perspective In Ecology And Evolutionmentioning

confidence: 99%

A remote‐controlled observatory for behavioural and ecological research: A case study on emperor penguins

et al. 2018

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Long‐term photographic recordings of animal populations provide unique insights into ecological and evolutionary processes. However, image acquisition at remote locations under harsh climatic conditions is highly challenging. We present a robust, energetically self‐sufficient and remote‐controlled observatory designed to operate year‐round in the Antarctic at temperatures below −50°C and wind speeds above 150 km/h. The observatory is equipped with multiple overview cameras and a high resolution steerable camera with a telephoto lens for capturing images with high spatial and temporal resolution. Our observatory has been in operation since 2013 to investigate an emperor penguin (Aptenodytes forsteri) colony at Atka Bay near the German Neumayer III research station. Data recorded by this observatory give novel biological insights in animal life cycle and demographic trends, but also in collective and individual behaviour. As an example, we present data showing how wind speed and direction influence movements of the entire colony and of individual penguins. We also estimate daily fluctuations in the total number of individuals present at the breeding site. Our results demonstrate that remote‐controlled observation systems can bridge the gap between remote sensing, simple time‐lapse recording setups, and on‐site observations by human investigators to collect unique biological datasets of undisturbed animal populations.

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Declining trends in the majority of Greenland’s thick-billed murre (Uria lomvia) colonies 1981–2011

Cited by 32 publications

References 26 publications

Wintering seabirds in south-west Greenland, 2017

Wintering seabirds in south-west Greenland, 2017

The Status of Glaucous Gulls <i>Larus hyperboreus</i> in the Circumpolar Arctic

A remote‐controlled observatory for behavioural and ecological research: A case study on emperor penguins

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