Sixteenth Census of Seabird Populations in the Sanctuaries of the North Shore of the Gulf of St. Lawrence, 2005

Rail, Jean‐François; Cotter, Richard C.

doi:10.22621/cfn.v121i3.476

Cited by 17 publications

(12 citation statements)

References 3 publications

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“…After a thriving period that lasted up to the end of the 1980s, the cod fishery collapsed, a situation which probably triggered the decline of the Herring Gull populations on the North Shore (-70% between 1988 and1993;Chapdelaine 1995) and around the Gaspé Peninsula as well (-37% between 1989 and 2002). We think that the disappearance of this abundant anthropogenic food source brought Herring Gull populations back to a more "natural" level, which will stabilize in the future, as has been observed in North Shore sanctuaries since the early 1990s (Rail and Cotter 2007).…”

Section: Resultsmentioning

confidence: 86%

“…Recent downward trends (i.e., negative annual growth rates) have been observed in other regions of eastern Canada: Magdalen Islands (Québec), -1.0%/year, 1989-2000; Anticosti Island (Québec), -2.3%/year, 1985-2004; North Shore Migratory Bird Sanctuaries (Québec), -8.0%, 1988 to 1998-1999 but followed by a stabilization with a rate of 0. 64%, 1998-1999Gull Island (Newfoundland), -2.2%, 1971-2001Great Island (Newfoundland), -9.9%, 1994-2003andBaccalieu Island (Newfoundland), -3.6%, 1984-2003 (CWS, unpublished data;Rail and Cotter 2007;Robertson et al 2004;G. Robertson, personal communication).…”

Section: Resultsmentioning

confidence: 99%

“…Small numbers (1-3 pairs) were also observed at four other sites in 2002 (Tables 4, 6), which along with the new colony at Cap d'Espoir may indicate the population is expanding not only in size but also in its distribution. Rail and Chapdelaine (2004) also reported on the recent appearance of small Great Cormorant colonies in North Shore Migratory Bird Sanctuaries, although the most recent survey of these sanctuaries, in 2005, recorded only 48 Great Cormorants, a sharp decrease from the previous survey in 1998-1999 when 342 adults were counted (Rail and Cotter 2007).…”

Section: Resultsmentioning

confidence: 99%

“…Historically, it nested at several locations along the North Shore of the Gulf of St. Lawrence and on the Magdalen Is lands. However, the only active colony found in the 1998-1999 census of North Shore Migratory Bird Sanctuaries (Corossol Island with 718 active burrows, Rail and Chapdelaine 2004) was deserted in the 2005 census (Rail and Cotter 2007), and no active burrow has been recorded on the Magdalen Islands in the last 20 years, although observations in 2007 of adults in the Île Brion Ecological Reserve during a survey for this species suggest a small colony still exists there (CWS, unpublished data). In some cases, including Bonaventure Island, the presence of Red Foxes (Vulpes vulpes) might be responsible of the abandonment of the colony.…”

Section: Resultsmentioning

confidence: 99%

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Third Census of Seabird Populations of the Gaspé Peninsula, Québec, 2002

Cotter¹,

Rail²

2007

Can Field Nat

Self Cite

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In the tradition of the quinquennial census of seabirds in the Migratory Bird Sanctuaries along Québec’s North Shore, which began in 1925, this paper presents the results of the first three seabird censuses of the Gaspé Peninsula conducted in 1979, 1989, and 2002, with an emphasis on the third census and on changes in seabird populations that occurred between the second and third censuses. In 1979 the population of seabirds was estimated at 134,163 birds, and this increased 72% to 231,186 birds in 1989. The upward trend in population continued in the 1990s but less sharply. The 2002 census recorded 279,276 birds, a 21% increase over the second census. The seabird community of the Gaspé Peninsula comprises 14 species. In each of the three censuses, three species accounted for over 75% of the total seabird population: Northern Gannet, Black-legged Kittiwake, and Common Murre. Between 1989 and 2002, Common Eider, Northern Gannet, Great Cormorant, Ring-billed Gull, Razorbill, and Black Guillemot increased in numbers, whereas Herring Gull, Black-legged Kittiwake, and Common Tern all suffered declines. Populations for Double-crested Cormorant, Great Black-backed Gull, and Common Murre all remained stable. Very small populations (<25 birds) of Leach’s Storm-Petrel and Atlantic Puffin have been recorded during the censuses at only one location, Bonaventure Island. In the 2002 census there were no petrels observed, neither of adults nor of active burrows.À l’instar des inventaires quinquennaux des oiseaux marins dans les refuges d’oiseaux migrateurs de la Côte-Nord, entrepris en 1925, cet article présente les résultats des trois premiers inventaires complets des oiseaux de mer nicheurs en Gaspésie, menés en 1979, 1989 et 2002. Une attention particulière est mise sur le statut des espèces d’après le troisième inventaire, et sur les tendances des populations entre les deux derniers inventaires. En 1979, le nombre d’oiseaux marins nicheur était évalué à 134 163 oiseaux, puis ce total a augmenté de 72% pour atteindre 231 186 oiseaux en 1989. Cette tendance à la hausse a continué dans les années 90, mais moins rapidement. En 2002 l’estimation était de 279 276 oiseaux, soit une hausse de 21 % par rapport au deuxième inventaire. La communauté d’oiseaux de mer de la Gaspésie est formée de 14 espèces nicheuses. Dans chacun des trois inventaires, trois espèces représentaient plus de 75 % de la population totale des oiseaux marins: le Fou de Bassan, la Mouette tridactyle, et le Guillemot marmette. Entre 1989 et 2002, l’Eider à duvet, le Fou de Bassan, le Grand Cormoran, le Goéland à bec cerclé, le Petit Pingouin et le Guillemot à miroir ont vu leurs nombres croître, tandis que le Goéland argenté, la Mouette tridactyle et la Sterne pierregarin subissaient des déclins. Les populations de Cormoran à aigrettes, Goéland marin et Guillemot marmette sont demeurées stables. Les petites populations (<25 oiseaux) d’Océanite cul-blanc et de Macareux moine n’ont été vues durant ces inventaires qu’à l’île Bonaventure. Cependant, aucun nid actif d’océanite ne fut localisé à cet endroit en 2002.

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Section: Resultsmentioning

confidence: 86%

Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

See 2 more Smart Citations

Third Census of Seabird Populations of the Gaspé Peninsula, Québec, 2002

Cotter¹,

Rail²

2007

Can Field Nat

Self Cite

View full text Add to dashboard Cite

show abstract

“…Combining all species, the number of seabirds grew by 47% from 2005 to 2010, and only the Great Black-backed Gull exhibited a large decline (60%). despite encouraging trends for razorbills and Common Murres, this sanctuary has a severely impoverished alcid community compared to historical levels (rail and Chapdelaine 2002;rail and Cotter 2007).…”

Section: Recent Population Trends By Sanctuarymentioning

confidence: 99%