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Greater Rondeau Area (ON007)

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Greater Rondeau Area (ON007)

Blenheim, Ontario

Latitude 42,297°N
Longitude 81,878°O
Altitude 174 - 178m
Superficie 130,51km²

Description du site

The Greater Rondeau Area is situated on the shoreline of Lake Erie, southeast of the town of Chatham. In addition to Rondeau Provincial Park, this site encompasses adjacent areas including Rondeau Bay and associated marshes and adjacent fields, Bates marsh, Erieau pier, harbour and beach, McGeachy's Pond, and the Morpeth Cliffs. Rondeau is the largest provincial park in southwestern Ontario. It is a low-lying sand spit that consists of a series of ridges and sloughs. A variety of habitats are present which contribute to the bird diversity. These habitats include productive southern hardwood forests, sandy beaches and wetlands ranging from woodland sloughs, to a large marsh and productive inland bay. The unique habitats of the park and surrounding area support many nationally vulnerable, threatened, and endangered species of flora and fauna.

Oiseaux

The Greater Rondeau Area supports significant populations of migrating waterfowl and shorebirds, along with populations of several threatened species that nest in the area.

The wetlands of Rondeau are recognized as a major waterfowl staging area. In addition, shorebirds are also found in large numbers. Species that are present in significant numbers (greater than 1% of their estimated North American or world population) include: Greater Scaup (1.6%); Tundra Swan (4% of their North American population); Common Goldeneye (about 1%); Ruddy Turnstone (1.2%); and Forsters Tern (about 1%). In spring and fall, thousands of Black-bellied Plovers and American Golden-Plovers can be seen feeding in open fields; the exact composition of these flocks, and therefore their significance, is not known, however. Up to 250 Whimbrel have also been recorded in spring migration.

Numerous nationally endangered species nest at Rondeau Provincial Park. The park has traditionally supported the largest breeding population of Prothonotary Warblers in Canada. This species has since declined in numbers, with only 13 pairs being recorded in Canada during 1997, six of which nested at Rondeau. Acadian Flycatchers and King Rails also breed at Rondeau: in 1997, four territorial Acadian Flycatchers were recorded in the mature deciduous forest habitats, and in the adjacent marsh, two King Rails were recorded. For both of these species, the estimated Canadian population is well below 100 pairs. In addition, at least nine pairs of Least Bitterns (nationally vulnerable) were recorded in 1997.

During the 1981 to 1985 surveys for the Atlas of the Breeding Birds of Ontario, the Rondeau area had the highest diversity of breeding birds in the province. Out of the more than 330 species recorded as breeding in Ontario, 134 were recorded in the Greater Rondeau Area.

Enjeux de conservation

Rondeau was designated as a provincial park in 1894. Despite this legislated level of protection, there are still threats to the habitats and wildlife of this area. Natural processes of habitat succession in the forested area, and soil erosion from the adjacent agricultural areas are altering the structure of the ecosystem. Introduced invasive plants such as Phragmites are increasing in numbers and out-competing the native plants. The excessive use of herbicides and pesticides on nearby agricultural fields could also impact wildlife.

Catégories ZICO Habitats Usages Menaces Potencielles ou Existantes Status de Protection
Cygne siffleur
Nombre Année Saison
1 5002016Hiver
1 5002013Printemps
1 9002013Hiver
1 5002011Printemps
2 000 - 7 0002008Printemps
2 0001998Hiver
8 5001996Printemps
Mouette de Bonaparte
Nombre Année Saison
5 0002017Automne
4 5002016Automne
4 0002016Printemps
3 000 - 6 0002015Automne
15 0002014Automne
3 0002012Printemps
5 0002011Printemps
10 0002009Printemps
3 0002007Automne
Fuligule milouinan
Nombre Année Saison
5 000 - 18 0002017Hiver
7 500 - 7 5402016Hiver
15 0002016Automne
12 5001995Printemps
Harle huppé
Nombre Année Saison
2 085 - 3 5002017Automne
3 0002016Automne
2 500 - 7 6002015Automne
2 0002012Printemps
5 0002010Printemps
3 0002008Printemps
3 0002007Automne
Quiscale rouilleux
Nombre Année Saison
150 - 1 2502017Automne
30 - 502017Printemps
60 - 8002016Automne
34 - 752016Printemps
50 - 1 2002015Automne
30 - 952015Printemps
100 - 2002014Printemps
1202013Automne
252012Printemps
2102007Printemps
401994Hiver
Mouette pygmée
Nombre Année Saison
2 - 52016Printemps
2 - 52015Automne
32015Printemps
22014Hiver
2 - 112014Automne
42014Été
22014Printemps
22013Automne
22012Printemps
22011Été
22010Printemps
102009Printemps
22006Été
62002Printemps
22001Été
3 - 41999Été
21999Printemps
Sterne pierregarin
Nombre Année Saison
8 0001998Automne
Martinet ramoneur
Nombre Année Saison
302017Printemps
302010Printemps
Paruline orangée
Nombre Année Saison
2 - 42017Été
1 - 42017Printemps
2 - 42016Été
1 - 42016Printemps
22015Automne
1 - 52015Été
1 - 62015Printemps
1 - 52014Été
1 - 32014Printemps
1 - 22013Été
1 - 22013Printemps
12012Printemps
12011Printemps
1 - 22010Printemps
12009Automne
22009Été
12009Printemps
12008Printemps
1 - 22007Printemps
12006Été
12006Printemps
1 - 22005Été
1 - 42005Printemps
1 - 22004Été
1 - 22004Printemps
12003Été
12003Printemps
22002Été
1 - 22002Printemps
22001Été
1 - 42001Printemps
1 - 22000Printemps
11999Été
1 - 21999Printemps
11998Printemps
1 - 151997Été
11997Printemps
11996Printemps
1 - 21995Printemps
1 - 101994Printemps
1 - 41993Printemps
11992Printemps
1 - 41991Printemps
1 - 21990Printemps
801985Été
2001935Été
Ictérie polyglotte
Nombre Année Saison
12017Été
1 - 22017Printemps
12016Printemps
1 - 22015Printemps
12014Printemps
12013Printemps
12011Printemps
1 - 22010Printemps
12008Printemps
12007Printemps
12006Printemps
12005Été
12003Été
12003Printemps
12002Printemps
12001Été
11999Automne
11998Automne
11997Printemps
11996Automne
1 - 51995Printemps
151995Autre
11991Printemps
Moucherolle vert
Nombre Année Saison
12017Automne
1 - 22017Été
1 - 42017Printemps
3 - 62016Été
2 - 42016Printemps
12015Automne
2 - 62015Été
22015Printemps
1 - 22014Été
12014Printemps
1 - 22013Été
12013Printemps
12012Été
12012Printemps
12011Été
22010Printemps
12009Printemps
12008Printemps
12007Automne
12007Printemps
1 - 22005Été
12005Printemps
12004Printemps
12003Été
12003Printemps
12002Été
12001Printemps
12000Printemps
21999Printemps
1 - 81997Été
11996Printemps
11992Été
21991Printemps
11990Printemps
Râle élégant
Nombre Année Saison
12017Printemps
12005Été
1 - 21997Été
Paruline hochequeue
Nombre Année Saison
41996Été
Bruant de Henslow
Nombre Année Saison
11997Printemps
Paruline de Kirtland
Nombre Année Saison
12017Printemps
12015Printemps
12013Printemps
12011Printemps
12007Printemps
11995Printemps
11994Printemps
Oiseaux aquatiques
Nombre Année Saison
24 0001995Printemps
Érismature rousse
Nombre Année Saison
3 5002016Automne
Fuligule à dos blanc
Nombre Année Saison
4 0002016Hiver
3 4001995Printemps