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An Eastern Hemlock branch at the Kortright Centre for Conservation. Tsuga canadensis, also known as eastern hemlock, [3] eastern hemlock-spruce, [4] or Canadian hemlock, and in the French-speaking regions of Canada as pruche du Canada, is a coniferous tree native to eastern North America. It is the state tree of Pennsylvania. [5]
Taxus canadensis, the Canada yew [2] or Canadian yew, is a conifer native to central and eastern North America, thriving in swampy woods, ravines, riverbanks and on lake shores. Locally called simply as "yew", this species is also referred to as American yew or ground-hemlock.
Tsuga heterophylla, the western hemlock [2] or western hemlock-spruce, [3] is a species of hemlock native to the northwest coast of North America, with its northwestern limit on the Kenai Peninsula, Alaska, and its southeastern limit in northern Sonoma County, California. [4] [5] The Latin species name means 'variable leaves'. [6]
FORECAST is a management-oriented, stand-level, forest-growth and ecosystem-dynamics model. The model was designed to accommodate a wide variety of silvicultural and harvesting systems and natural disturbance events (e.g., fire, wind, insect epidemics) in order to compare and contrast their effect on forest productivity, stand dynamics, and a series of biophysical indicators of non-timber values.
Lead researcher Virginia Dale records the plants observed with percentage of cover on Plot 43 during a July 2022 research expedition to Mount St. Helens.
The mid-Holocene hemlock decline was an abrupt decrease in Eastern Hemlock (Tsuga canadensis) populations noticeable in fossil pollen records across the tree's range. [1] It has been estimated to have occurred approximately 5,500 calibrated radiocarbon years before 1950 AD. [2] The decline has been linked to insect activity [1] [3] and to ...
eastern hemlock; Canadian hemlock Pinaceae (pine family) Tsuga caroliniana: Carolina hemlock Pinaceae (pine family) Tsuga chinensis: Chinese hemlock Pinaceae (pine family) Tsuga diversifolia: Northern Japanese hemlock Pinaceae (pine family) Tsuga dumosa: Himalayan hemlock Pinaceae (pine family) Tsuga forrestii: Forest Hemlock Pinaceae (pine family)
Austin T. Blakeslee Natural Area, Monroe County, Pennsylvania. The northern hardwood forest is a general type of North American forest ecosystem found over much of southeastern and south-central Canada, Ontario, and Quebec, extending south into the United States in northern New England, New York, and Pennsylvania, and west along the Great Lakes to Minnesota and western Ontario.