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Little Qualicum Estuary to Nanoose Bay (BC056)

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Little Qualicum Estuary to Nanoose Bay (BC056)

Parksville, Colombie-Britannique

Latitude 49,311°N
Longitude 124,284°O
Altitude 0m
Superficie 169,61km²

Description du site

The IBA covers a 30 km stretch of the coast of Vancouver Island facing the Strait of Georgia, from the Little Qualicum River estuary in the northwest to Nanoose Harbour in the southeast. It extends a few km upriver along several estuaries and out into the Strait, and includes some small islands off the Nanoose Bay peninsula. Partly within its borders and partly adjacent to it are several contiguous municipalities with a combined population of over 30,000. All are growing residential areas. The shoreline, which is broken up by several river drainage basins with estuaries, is mostly rocky with large varied tidal flats of sand, rock, pools, eelgrass beds, and mud. Inland from the IBA, the land slopes gently up to the mountain range of central Vancouver Island. This is the catchment area of the IBAs major rivers (the Little Qualicum and Englishman Rivers), which includes both residential developments and large wooded tracts, some of which have been logged. At the northwest end of the IBA is the Little Qualicum River with a large estuary and, upriver, a Fish Hatchery. To the southeast of here is the Town of Qualicum Beach with its extensive sand and rocky tidal shore bordered by a highway and public footpath. Adjacent is the large private estate of Qualicum Woods, owned by the local university and maintained for its habitat, and the large tidal rocky Columbia Beach in French Creek which extends to the next major estuary where the French and Morningstar Creeks empty into the Strait of Georgia. Here there is a commercial Marina. Southeast from here is the built-up urban area of Parksville, with a community park and a major tidal beach that when uncovered at low tide extends more than 1 km into the Strait. It is bounded to the southeast by the Englishman River Estuary, a protected, undeveloped parkland. The community of San Pareil is next, followed by Rathtrevor Provincial Park. It adjoins Craig Bay which fronts many large resorts and a large condominium development. The stretch from Rathtrevor to Craig Bay has tidal flats consisting of sand, rocks, oyster beds, and tidal pools extending more than 1 km out from the high tide line. Around the corner from Craig Bay, the much deeper Northwest Bay contains an active log sort. Between this bay and Nanoose Harbour lies the peninsula of Nanoose Bay with its rocky shoreline of bays and small offshore islands. The peninsula itself is rocky and has several large hills with a variety of habitat including several large housing developments, farmland, and a large forested and lightly used area controlled by the Department of National Defense. Nanoose Bay Estuary at the western end of Nanoose Harbour has extensive tidal flats and is fed by several creeks running through the protected lands of the Qualicum National Wildlife Area.

Oiseaux

The marine environment of the Georgia Strait with its coastline and estuaries and offshore islands and islets dominates the IBA and supports the most abundant birdlife in the area. However, most of the species associated with this environment are only seasonally present, traveling through during fall or spring migration or residing in the area during the winter months. Globally significant numbers of Brant pass through on spring migration. A sizable fraction of all individuals of the Western population of this species rest and feed for up to 30 days in this area during spring migration coinciding with the herring run. Thayer's Gull and Mew Gull are common to abundant in this IBA from late fall to mid-spring with maximum abundance during the herring run. Numbers suggest that a very significant proportion of the global population of Thayer's Gull passes through this area annually. Very large congregations of birds, of the order of a million in number, can be seen on the water during the second half of April. These include all three scoter species, Long-tailed Duck, and Pacific Loon. The relative importance of the IBA to the other species listed in the table below is under review Common marine winter residents include Bufflehead, both on salt and fresh waters, Harlequin Duck, Black Turnstone, Black-bellied Plover, and Dunlin. Long-tailed Duck is a fairly common winter resident, but usually well off-shore. Black Oystercatcher and Killdeer are among the few species resident throughout the year. Among the non-marine species, Trumpeter Swan is present from fall to spring, usually in small flocks or family groups. The 2004 Christmas Bird Count in this area found 272 individuals. Common year-round residents include Chestnut-backed Chickadee, House Finch, American Robin, Northwestern Crow, Bald Eagle, and California Quail (groups with young of up to 50 can be observed in the winter in residential areas). The latter are subject to predation by both domestic and feral cats. A number of non-marine species breed in the area during the summer, arriving in early to late spring and leaving in mid-summer to early fall. These include Turkey Vulture, Rufous Hummingbird, and passerines. The November-2005 edition of the Parksville-Qualicum Beach Area Bird Checklist lists 292 species, including accidentals.

Enjeux de conservation

Healthy eelgrass beds are crucial to maintaining a large number of birds, mammal, fish and invertebrate species in the IBA; eelgrass supports the spring herring spawn, which in turn attracts the large spring concentrations of many bird species. The condition of the IBA's eelgrass beds is described as fairly healthy, especially in the area of Rathtrevor, but development to accomodate the increasing human population has adversely impacted some areas, e.g., Qualicum Beach. Shoreline development, such as construction of hard retaining walls, may have altered currents and wave action and led to a reduction in terrestrial vegetation. Pollution from run-off associated with urban development is a potential threat; logging and the log sort in Northwest Bay have the potential to negatively impact water quality. Disturbance from recreational use is another threat, with potential to fragment eelgrass beds. There are several docks and marinas in the IBA and numerous aquaculture ventures. The Little Qualicum Estuary to Nanoose Bay IBA falls within the boundaries of a Provincial Wildlife Management Area. Rathtrevor Park is protected, but has a large campground. There is an annual Brant Festival held at the end of March which celebrates the IBA's importance for Brant and many other waterbird species.

Catégories ZICO Habitats Usages Menaces Potencielles ou Existantes Status de Protection
Goéland arctique (thayeri)
Nombre Année Saison
160 - 9042017Printemps
81 - 4082017Hiver
137 - 3882016Hiver
90 - 4122016Automne
80 - 3822016Printemps
100 - 1 0512015Hiver
125 - 2 9112015Printemps
94 - 2 1172014Hiver
100 - 1752014Automne
120 - 1 0002014Printemps
150 - 5602013Hiver
150 - 4002013Automne
141 - 7342013Printemps
85 - 1 3032012Hiver
2042012Automne
310 - 5282012Printemps
100 - 1 6892011Hiver
100 - 2002011Automne
4602011Printemps
79 - 5002010Hiver
3262010Automne
1 3752010Printemps
131 - 6472009Hiver
200 - 5002009Printemps
78 - 1542008Hiver
1582008Automne
151 - 6002008Printemps
139 - 3732007Hiver
1502007Automne
176 - 1 2802007Printemps
120 - 2122006Hiver
832006Automne
432 - 1 7452006Printemps
7822005Hiver
76 - 3002005Automne
1 3902005Printemps
77 - 2542004Hiver
842004Automne
150 - 1802004Printemps
100 - 7702003Hiver
2402003Automne
120 - 1 0002003Printemps
120 - 2 0322002Hiver
5002002Automne
207 - 3922001Hiver
902001Printemps
2502000Printemps
961999Hiver
1361998Hiver
1191997Hiver
5091995Hiver
9631994Hiver
7731992Hiver
5281991Hiver
9601977Hiver
Macreuse à front blanc
Nombre Année Saison
10 400 - 27 3932017Printemps
8 000 - 8 6522016Printemps
6 200 - 35 0002015Printemps
15 000 - 35 0002014Printemps
6 0002010Printemps
12 0002007Printemps
6 7002005Hiver
28 0482004Printemps
16 7752000Printemps
4 6001973Printemps
Grèbe élégant
Nombre Année Saison
1 2451991Hiver
1 6001977Automne
4 8001976Printemps
5 0001972Automne
3 5001931Printemps
??Printemps
Cygne trompette
Nombre Année Saison
5532015Hiver
5222014Hiver
2752013Hiver
8602012Hiver
2932007Hiver
Bernache cravant
Nombre Année Saison
8 0502047Printemps
3 0002017Printemps
3 6402011Printemps
3 8722006Printemps
5 415 - 7 2002000Printemps
2 5001980Printemps
3 4731961Printemps
8 0501947Printemps
Mouette de Bonaparte
Nombre Année Saison
4 500 - 7 2502006Hiver
3 0001985Hiver
??Autre
Goéland à ailes grises
Nombre Année Saison
4 5002017Printemps
5 1052012Hiver
5 1342011Hiver
5 0002011Printemps
5 000 - 10 0002005Printemps
4 9952002Hiver
6 8002001Printemps
5 6301998Hiver
5 0751994Hiver
5 1491991Hiver
1 5001985Hiver
??Hiver
Guillemot marbré
Nombre Année Saison
2141976Printemps
??Autre
Goéland cendré
Nombre Année Saison
2 400 - 10 0002017Printemps
6 155 - 6 8282015Printemps
3 000 - 4 0002014Printemps
2 7432013Automne
2 565 - 3 0002013Printemps
4 5002010Printemps
2 7152007Printemps
2 857 - 12 3272006Hiver
3 750 - 4 6002006Printemps
4 4352005Printemps
2 391 - 3 6542004Printemps
4 3752001Printemps
3 6002000Printemps
4 0001985Printemps
??Printemps
Macreuse brune
Nombre Année Saison
10 0002014Printemps
6 0001985Printemps
??Autre
Goéland argenté
Nombre Année Saison
5 0762013Printemps
Fuligule milouinan
Nombre Année Saison
6 500 - 7 0002017Printemps
Goéland de Heermann
Nombre Année Saison
242014Automne
552008Automne
252002Automne
Petit-duc des montagnes
Nombre Année Saison
12013Hiver
12007Hiver
12006Printemps
22005Hiver
31996Printemps
Grand Héron
Nombre Année Saison
562015Hiver
382013Hiver
372012Hiver
452006Hiver
372005Hiver
402004Hiver
432003Hiver
341999Hiver
371995Hiver
381994Hiver
331977Été
??Autre
Goéland de Californie
Nombre Année Saison
5 0002014Printemps
5 2082005Printemps
Huîtrier de Bachman
Nombre Année Saison
842011Hiver
281985Hiver
??Autre