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This small ecoregion is comprised of the outer headlands of narrow peninsulas in eastern Newfoundland. These headlands are exposed to high winds, cool temperatures and salt spray for most of the year. The ecoregion is classified as having an exposed oceanic low boreal ecoclimate. Mean annual temperature is approximately 5.5°C. Summers are cool, with a mean temperature of 11.5° C, and foggy. Winters tend to be short and relatively mild, with a mean temperature of -1° C. Mean annual precipitation ranges between 1200-1500 mm (ESWG 1995). This ecoregion is underlain predominantly by a mixture of late Precambrian sedimentary and volcanic strata, and its elevations rise abruptly from the sea to about 200 m asl. Stream erosion has cut deeply, and the uplands are dissected, rugged, and rocky along the coastline, but inland they present a rolling terrain of low relief. The surface of the uplands is dominated by peat-covered, rolling to hummocky, sandy morainal deposits with sloped that range 5-30 percent. Surficial deposits of glacial till are common, and wetlands cover more than 25 percent of the ecoregion (ESWG 1995). Precambrian fossils have been found at Mistaken Point Ecological Reserve.
The moss-heath plant associations of this ecoregion, dominated by blanket bogs and Racomitrium heath, are unique to North America. Its closest affinities are in oceanic climates such as Iceland, Northern Scotland, and Spitzbergen (ESWG 1995). The ecoregion supports dense carpets of moss and fruticose lichen, along with closed, low-growing ericaceous shrubs. Dwarf krummholz of balsam fir (Abies balsamea) occurs on some upland sites, and the moss-heath of this region is unique to North America (ESWG 1995). Characteristic wildlife include caribou (Rangifer tarandus), willow ptarmigan (Lagopus lagopus), and many seabird species, including one of the world’s largest Northern gannet (Morus bassanus) colonies, situated at Cape St. Mary’s (ESWG 1995). Habitat Loss and Degradation It is estimated that 95 percent of this small ecoregion remains intact. Some habitat loss has occurred due to the presence of a few very small coastal communities and associated access roads. Remaining Blocks of Intact Habitat The ecoregion is naturally disjunct, and each area could be considered as a separate habitat block. Degree of Fragmentation Very minor habitat fragmentation. Degree of Protection
Types and Severity of Threats The greatest threat is from All Terrain Vehicles (ATV’s) in the lowlands. Recreation activities around the seabird colonies will require careful management. Caribou poaching is a problem in this area.
 Relationship to other classification schemes The South Avalon-Burin Oceanic Barrens occur along the southern tips of the Avalon and Burin peninsulas in Newfoundland (TEC 116) (Ecological Stratification Working Group 1995). The Boreal forest here is also named Avalon (30), as described by Rowe (1972). Prepared by: B. Meades, L. Gratton, A. Perera, K. Kavanagh, M. Sims, G. Mann. This text was originally published in the book Terrestrial ecoregions of North America: a conservation assessment from Island Press. This assessment offers an in-depth analysis of the biodiversity and conservation status of North America's ecoregions. All text by World Wildlife Fund © 2001 For more general information on this ecoregion, go to the WildWorld version of this description.
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