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Quidi Vidi Lake (NF022)

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Quidi Vidi Lake (NF022)

St. John's, Terre-Neuve-et-Labrador

Latitude 47,581°N
Longitude 52,690°O
Altitude 0 - 10m
Superficie 7,00km²

Description du site

Quidi Vidi Lake lies within the city limits of St. John's, Newfoundlands capital city. Oriented northeast to southwest, the lake is cigar-shaped, with maximum dimensions of 1,600 by 350 m. The lake is fed from the north by the Virginia River and from the west by Rennies River. The eastern end of the lake empties into the ocean at the Quidi Vidi Gut. The lake shoreline is comprised of gravel and there are no islands, significant points, or emergent vegetation within the lake. From May to December, the lake is used for recreational boating.

Oiseaux

Large numbers of gulls use Quidi Vidi Lake as a day time resting site in the late fall, winter and early spring when there is ice on the lake. At least five species occur in significant numbers (i.e., greater than 1% of their estimated North American populations). These species include: Herring Gull (10,000 as much as 2.8% of the estimated North American population); Great Black-backed Gulls (8,000 as much as 6% of the estimated North American population); Iceland Gull (2,000 as much as 6.6% of the estimated North American population); Glaucous Gull (750 about 1% of the estimated North American population); and Common Black-headed Gull (75 the largest wintering concentration in North America). All of these estimated are based on one-day high counts averaged over several seasons; it is likely that the total number of birds using the site is much larger.

The gulls do not feed at Quidi Vidi Lake except for the few dozen, mostly Herring Gulls, that steal bread from handouts to the ducks. The Herring, Great Black-backed and Glaucous Gulls use the dump as the main food source. Iceland Gulls feed at sewer outflows in St. Johns harbour and one sewer outlet in Quidi Vidi Gut. Iceland Gulls also feed along the coast on more natural food sources. Fifteen species of gulls have been seen at Quidi Vidi Lake with up to ten species present at one time. This site has a worldwide reputation for gull watching. The abundance, diversity and ease of observing gulls at Quidi Vidi Lake has attracted gull watchers from the Netherlands, Ireland, the United States, and the rest of Canada. Other birds commonly recorded at this site include: American Black Ducks (300), Mallards (25), Northern Pintails (50), Ring-billed Gulls, Mew Gulls, and Lesser Black-backed Gulls.

Enjeux de conservation

The waterfowl using Quidi Vidi Lake survive solely on food handouts from people. Numbers increased dramatically in the St. Johns area over the last 10 years. The number of Northern Pintail now wintering in St. Johns (200-300), is exceptionally high for all areas north of Massachusetts.

Waste oil and other toxins sometimes end up in the St. Johns drainage system. Waste oil contamination in winter could affect large numbers of ducks and gulls confined to small areas of open water at the mouth of Rennies and Virginia River.

Catégories ZICO Habitats Usages Menaces Potencielles ou Existantes Status de Protection
Goéland marin
Nombre Année Saison
1 5002017Hiver
2 0002014Hiver
2 0002013Hiver
2 0002013Automne
1 400 - 2 0002011Hiver
1 4002010Hiver
2 0002008Hiver
3 3651996Hiver
5 970 - 8 0001995Hiver
1 7291993Hiver
Goéland arctique (glaucoides ou kumlieni)
Nombre Année Saison
1 000 - 1 5002016Hiver
1 000 - 1 3002015Hiver
1 000 - 2 5002014Hiver
1 000 - 1 5002013Hiver
1 0002012Hiver
800 - 4 0002011Hiver
1 3502010Hiver
1 000 - 1 5002008Hiver
9881996Hiver
2 000 - 2 0871995Hiver
1 9721993Hiver
Mouette rieuse
Nombre Année Saison
4 - 102017Printemps
42016Hiver
25 - 382015Printemps
40 - 702015Hiver
15 - 652014Hiver
40 - 452014Automne
40 - 452014Printemps
20 - 902013Hiver
10 - 902013Automne
8 - 192013Printemps
12 - 752012Hiver
35 - 1052012Automne
202012Printemps
10 - 702011Hiver
42011Été
10 - 252011Printemps
50 - 602010Hiver
10 - 572008Hiver
25 - 652006Printemps
282006Hiver
10 - 152005Hiver
20 - 402005Automne
12 - 1002004Hiver
42004Printemps
252003Hiver
852003Automne
30 - 451997Hiver
901996Hiver
65 - 751995Hiver
5 - 101993Automne
4 - 91993Hiver
5 - 361992Hiver
4 - 231992Automne
15 - 441991Hiver
14 - 531991Automne
151991Printemps
35 - 791990Hiver
25 - 731990Automne
4 - 281990Printemps
Mergule nain
Nombre Année Saison
82016Hiver
452003Hiver
Goéland argenté
Nombre Année Saison
5 0002017Printemps
3 0002017Hiver
3 000 - 5 0002015Hiver
5 000 - 8 0002014Automne
3 5002014Hiver
3 000 - 4 0002013Hiver
3 000 - 8 0002013Automne
3 500 - 3 7502011Hiver
3 5002010Hiver
5 9981996Hiver
4 693 - 10 0001995Hiver
5 4081993Hiver
3 0751992Hiver
Puffin des Anglais
Nombre Année Saison
42000Automne
Mouette blanche
Nombre Année Saison
2 - 52002Hiver
4 - 91998Hiver
Bec-croisé des sapins
Nombre Année Saison
222016Printemps
8 - 102016Hiver
112015Hiver
101996Printemps