![]() ![]() ![]() ![]() Deforestation of nearby trees can severely impact nest site availability for the Marbled Murrelet. In addition extensive fishing can reduce food availability for seabirds or impact populations via by-catch. The most pressing threats to this area are from potential oil contamination from tankers passing through the area. Nuchatlitz Provincial Park is completely within the IBA, and three other Provincial Parks are partly within the IBA: Catala Island Marine Provincial Park, Santa Gertrudis-Boca del Infierno Provincial Park, and Bligh Island Marine Provincial Park. Despite the scarcity of data in this area, there are strong indications of the importance of Nootka Island Banks as a feeding area for murrelets and other seabirds. inornata), Pigeon Guillemot, Pelagic Cormorant, Sooty Shearwater, Fork-tailed Storm-petrel, Mew gull, Glaucous-winged Gull and White-winged Scoter. There have been sightings at Nootka Island Banks of many other species of seabirds including Pacific Loon, Rhinoceros Auklet, Common Murre (ssp. A record in 1990 of 10,000 to 12,000 Short-tailed and Sooty Shearwaters suggests that this may also be an important feeding area for pelagic seabirds. Brandt's Cormorants sighted here constitute a significant percentage of the national breeding population, though these birds were seen at sea, not breeding. Other Species of Conservation Interest - In addition to Marbled Murrelets, other species are known to use this area as a foraging site. All evidence points to Nootka Sound as one of the most important murrelet breeding habitats in BC and Nootka Island Banks as the critical feeding site for birds breeding in this area. The Nootka Sound area in general also hosted the highest murrelet densities along the coast. In 1999, 2032 Marbled Murrelets were estimated to use the Nootka Sound area which accounts for 1/3 of the estimated number found on the north-west coast of Vancouver Island. In 1991, 352 murrelets were reported feeding here, by far the largest number seen on the area surveys. Two surveys done in 19 both found high densities of murrelets at Nootka Island Banks. Marbled Murrelet is determined to be Threatened by the Committee on the Status of Endangered Wildlife in Canada (COSEWIC wildlife species that have been assessed as at risk by COSEWIC may qualify for legal protection and recovery under Canada's Species at Risk Act). Significant Species - Nootka Island Banks is an important feeding area for Marbled Murrelets during the breeding season. Bajo Reefs are included within the boundaries. There are extensive algae and kelp beds along the coastline. The boundaries of the IBA extend offshore to encompass about 10 km of shallow offshore waters. Huge Sitka spruce dominate along the outer coast with a substantial inter mixture of ancient red cedars, western hemlock and Douglas-fir and a scattering of shore pine and red alder. These areas have a wider diversity of habitat - tidal mudflats, calm interior lagoons and many islands and reefs. In the north, all of Nuchatlitz Provincial Park is included and half of Catala Island Marine Provincial Park. On each end of Nootka Island the IBA curves inland: in the north to included the mouths of Nuchatlitz and Esperanza Inlets, and in the south, Yuquot and much of Bligh Island. Plagioclase-hornblende thermometry and aluminium-in-hornblende barometry indicate metamorphism at up to 710o Celsius and 3.2 kbar of early Jurassic and older rocks.Nootka Island Banks on the west coast of Nootka Island, west of Vancouver Island, is primarily an area of exposed outer coast - jagged rocks, gravelly beaches with several major river outflows, long flat intertidal rock shelves, and intermittent but regular grassy meadows. Groups 1 and 2 resemble the Triassic Karmutsen and Jurassic Bonanza Formations. Group 2 comprises the youngest and consists of calc-alkaline, arc-like basalts, a plutonic suite, and minor hypabyssal bodies. Limestones and siltstones comprise the intervening sedimentary strata. Group 1 contains tholeiitic basalts that have within-plate / E-MORB element signatures. Two main protolith groups are evident on Nootka Island. A guide to Nootka Island & Nootka Sound, Vancouver Island, British Columbia. This work provides a 1:110,000 scale geologic map and synthesises the regional tectonics. Nootka Island represents a portion of an accreted volcanoplutonic arc, on the western coast of Vancouver Island, British Columbia, of the Canadian Cordillera Insular Belt.
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