Mercury trends in herring gull (Larus argentatus) eggs from Atlantic Canada, 1972–2008: Temporal change or dietary shift?

Burgess, Neil M.; Bond, Alexander L.; Hebert, Craig E.; Neugebauer, Ewa; Champoux, Louise

doi:10.1016/j.envpol.2012.09.001

Cited by 74 publications

(39 citation statements)

References 84 publications

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“…갈매기류는 해양생태계 오염 지표로서 알려져 있고 크롬(Cr), 납(Pb), 비소(As), 잔류성유 기화합물(PCBs, DDTs 등) 등과 같은 오염물질의 생 물농축 모니터링에 사용되고 있다 (Burger and Gochfeld, 1995a;Burger and Gochfeld, 1995b;Choi et al, 2001;Fujihara et al, 2003). 특히, 개 체를 죽이지 않고 깃털이나 알 등을 채취하는 방법으 로 장기적인 모니터링을 수행하는 연구들도 적지 않 다 (Ayas et al, 2008;Burger, 2002;Burgess et al, 2013;Moksnes and Norheim, 1986;Klein et al, 2012) …”

Section: 서 론unclassified

Sampling Procedure of Black-tailed Gull (Larus crassirostris)'s eggs in National Environmental Specimen Bank for Monitoring Long-term Marine Environmental Pollution

Lee¹,

Lee²,

Lee³

et al. 2013

Journal of Environmental Impact Assessment

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Environmental Specimen Banks (ESBs) have been established widely in the world since 1979 for monitoring long-term bio-accumulation of environmental pollutants. The ESBs perform the retrospective analysis of representative biological samples collected regularly and store them in cryogenic condition. In Korea, National Environmental Specimen Bank (NESB) was established in 2009. Since then, NESB had prepared the standard operating procedures (SOPs) for the seven kinds of specimens (Red Pine (Pinus densiflora), Common Carp (Cyprinus carpio), and etc.) for monitoring the effect of environmental pollution on the terrestrial ecosystem and river ecosystem.

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Section: 서 론unclassified

Sampling Procedure of Black-tailed Gull (Larus crassirostris)'s eggs in National Environmental Specimen Bank for Monitoring Long-term Marine Environmental Pollution

Lee¹,

Lee²,

Lee³

et al. 2013

Journal of Environmental Impact Assessment

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“…We were especially interested in whether there were consistent differences across metals levels for both species and for all colonies combined between the 2 years, whether there were differences among islands, and whether the same islands had the highest levels of most metals. Normally the differences in metals levels among years and colonies are small (Burgess et al 2013). …”

Section: Introductionmentioning

confidence: 99%

“…Thompson et al 1993; Weseloh et al 2011; Burgess et al 2013). Black-backed Gulls are twice as large as Herring Gulls, and can thus eat larger food items, and are more voracious and aggressive predators.…”

Section: Introductionmentioning

confidence: 99%

Contaminant levels in Herring (Larus argentatus) and Great Black-backed Gull (Larus marinus) eggs from colonies in the New York harbor complex between 2012 and 2013

Burger

Elbin

2014

Ecotoxicology

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Birds living in coastal areas are exposed to severe storms and tidal flooding during the nesting season, but also to contaminants that move up the food chain from the water column and sediment to their prey items. We examine metals in Herring Gull (Larus argentatus) and Great Black-backed Gull (Larus marinus) eggs collected from the New York/New Jersey harbor estuary in 2012 and in 2013 to determine if there were significant yearly differences in metal levels. We test the null hypothesis that there were no significant yearly differences in metal levels. We investigate whether there were consistent differences in metals from 2012 to 2013 that might suggest a storm-related effect because Superstorm Sandy landed in New Jersey in October 2012 with high winds and extensive flooding, and view this research as exploratory. Except for arsenic, there were significant inter-year variations in the mean levels for all colonies combined for Herring Gull, and for lead, mercury and selenium for Great Black-backed Gulls. All metal levels in 2013 were less than in 2012, except for lead. These differences were present for individual colonies as well. Metal levels varied significantly among islands for Herring Gulls in both years (except for cadmium in 2013). No one colony had the highest levels of all metals for Herring Gulls. A long term data set on mercury levels in Herring Gulls indicated that the differences between 2012 and 2013 were greater than usual. Several different factors could account for these differences, and these are discussed.

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“…Egg volume was calculated following Harris (1964): V = l × w² × k / 1000 where V = volume (mm³), l = length (mm), w = width (mm), k = constant of 0.476. Additional egg measurements from Kent Island were obtained from 11 years between 1988 and 2014 from archived data of the Environment and Climate Change Canada toxicological egg sampling program (Burgess et al 2013), where 15 eggs were measured every four years from 1988 to 2008 and then annually from 2010 for a total sample size of 170 eggs. These archived data included only one egg sampled randomly from each nest.…”

Section: Egg Volumementioning

confidence: 99%

“…Axes for tonnage of landings vary by fisheries because they are reported from raw data from different areas; they reflect regional trends in fisheries activity but do not reflect local landings around the study area. Egg measurements were obtained from collections by Environment and Climate Change Canada, which sampled 1 egg from each of 5 nests in 1988 and 1 egg from each of 15 nests every 1 to 4 years between 1992 and 2015 (Burgess et al 2013). See methods for details on data sources.…”

Section: Population Estimate and Clutch Sizementioning

confidence: 99%

Variability in egg size and population declines of Herring Gulls in relation to fisheries and climate conditions

Bennett¹,

Jamieson²,

Ronconi³

et al. 2017

ACE

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ABSTRACT. Changes in clutch and egg size in many avian species have been linked to seasonal variation, female physiological state, and laying date during breeding season. These reproductive variables have also been linked to population status and habitat variables. Recent declines in Herring Gull (Larus argentatus) populations in the Atlantic region may be associated with environmental changes, fishery activities, or natural species interactions and fluctuations. We studied variability and trends in Herring Gull egg, clutch, and population size at a cluster of three islands of the Grand Manan Archipelago in the Bay of Fundy, Canada. A generalized linear model investigating variability in Herring Gull egg volume over a 28-year period (1988 to 2015) showed increasing egg volume since a low in 2000, significant positive correlations with regional fisheries landings, and weak interactions with sea surface temperature and the winter North Atlantic Oscillation (NAO) index. Herring Gull egg size decreased by 11.6% from 1988 to 2000, but both egg size and clutch size have increased significantly since 2001. A 2015/2016 population estimate of the three islands showed a 36% decline in Herring Gull numbers since 2001. Changes in annual and seasonal availability of various fishery related food sources, specifically decreasing Atlantic herring (Clupea harengus) and groundfish landings and increasing American lobster (Homarus americanus) landings, may be linked to these increases in reproductive variables. However, it appears that other factors may be influencing the declining gull population because despite increased availability of alternative food sources and increased clutch size and egg volume, there has been no documented increase in abundance. Interspecific interactions, anthropogenic activities, and climatic variability may also have a role in these population dynamics. Variabilité de la taille des oeufs et baisse des populations chez le Goéland argenté en relation avec la pêche commerciale et les conditions climatiquesRÉSUMÉ. Les changements dans la taille des oeufs et de la ponte chez plusieurs espèces d'oiseaux ont été associés aux variations saisonnières, à l'état physiologique des femelles et à la date de ponte pendant la saison de nidification. Des diminutions récentes des populations de Goélands argentés (Larus argentatus) dans la région de l'Atlantique seraient peut-être liées à des changements environnementaux, aux activités de pêche ou aux interactions et fluctuations naturelles des espèces. Nous avons étudié la variabilité et la tendance de la taille des oeufs, de la ponte et des populations dans un groupe de trois îles dans l'archipel de Grand Manan dans la baie de Fundy, Canada. Un modèle linéaire généralisé conçu pour examiner la variabilité du volume des oeufs de ce goéland sur une période de 28 ans (1988 à 2015) a révélé un volume croissant depuis un minimum atteint en 2000, une corrélation positive significative avec les débarquements de pêche commerciale régionale et de faibles interactions avec la ...

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Mercury trends in herring gull (Larus argentatus) eggs from Atlantic Canada, 1972–2008: Temporal change or dietary shift?

Cited by 74 publications

References 84 publications

Sampling Procedure of Black-tailed Gull (Larus crassirostris)'s eggs in National Environmental Specimen Bank for Monitoring Long-term Marine Environmental Pollution

Sampling Procedure of Black-tailed Gull (Larus crassirostris)'s eggs in National Environmental Specimen Bank for Monitoring Long-term Marine Environmental Pollution

Contaminant levels in Herring (Larus argentatus) and Great Black-backed Gull (Larus marinus) eggs from colonies in the New York harbor complex between 2012 and 2013

Variability in egg size and population declines of Herring Gulls in relation to fisheries and climate conditions

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