The Eastern Slope Of The Mingus Mountain - amazonia.fiocruz.br

The eastern forest—boreal transition is a temperate broadleaf and mixed forests ecoregion of North Americamostly in eastern Canada.

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It is a transitional zone or region between the predominantly coniferous Boreal Forest and the mostly deciduous broadleaf forest region further south. However the Tge elevations of the Laurentian Mountains and the northern Appalachian Mountains in Canada constitute the Eastern Canadian forests ecoregion. The region has a humid continental climate consisting of warm summers and cold, snowy winters, and is warmer towards the south. The flora in this ecoregion varies considerably based on soil conditions and elevation.

These mixed forests are distinct from the deciduous forests south of the Canadian Shield and the cooler boreal forests to the north. Conifer swamps occur in areas that are seasonally flooded. Trees can be very dense or sparse; mats of sphagnum moss cover the ground.

Black spruce The Eastern Slope Of The Mingus Mountain mariana and tamarack Larix laricina are the predominant tree species. Where the soil is not saturated year round grows northern white cedar Thuja occidentalis. Speckled alder Alnus incana grows around the edges of these swamps and red spruce Picea rubens and white pine Pinus strobus grow on higher, drier ground. Lowland conifer forests occur on flats, low ridges, and knolls near bodies of water. They are dominated by balsam fir Abies balsamea and red spruce, although white pine and link birch Betula papyrifera also occur.

The ground is often stony with little vegetation. Hardwood—conifer mixed forests occur in a transition zone between lowland conifer and northern hardwood forests.

The ground is less rocky than in the lowland conifer forests and thus supports more vegetation. Trees include red spruce, balsam fir, eastern hemlock Tsuga canadensisred maple Acer rubrumand yellow birch Betula alleghaniensis. The understory vegetation is abundant, with witchhobble Viburnum lantanoideshoneysuckle Lonicera spp. The herbaceous layer include common wood sorrel Oxalis spp. Northern hardwood forests occur on the richest, most productive soils.

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Sugar maple Acer saccharumAmerican beech Fagus grandifoliaand yellow birch are the predominant tree species. In secondary forestsred spruce, white pine, white ash Fraxinus americanaeastern hemlock, black cherry Prunus serotinaEasterh red maple are present. Witchhobble Viburnum alnifolium is a common understory shrub. Ferns and clubmosses grow in the herbaceous layer, along with numerous species of spring-flowering forbs.

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Upper slope hardwood—conifer mixed forests are an area of transition between the northern hardwood and the mountain conifer forests. They are similar to hardwood—conifer forests, but with no red maple. Red spruce and eastern hemlock, together with sugar maple, yellow birch, and American beech are the dominant species, with scattered white pine.

Red Muntain and balsam fir are common at lower elevations of the mountain conifer forests.]