Hemiptera: Adelgidae tsugae Annad

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Presentation transcript:

Hemiptera: Adelgidae tsugae Annad

Life Cycle

Prospect Hill, Harvard Forest Quercus rubra (Northern Red Oak), Acer rubrum (Red Maple), Betula lenta (Sweet Birch), Betula papyrifera (Paper Birch), Fraxinus americana (White Ash) Pinus strobus (Eastern White Pine) Tsuga canadensis (Eastern Hemlock)

Prospect Hill, Harvard Forest Characteristic Hemlock Deciduous Watershed area (ha) 24 27 Riparian hemlock (%) 88 36 Mean summer temperature (°C) 10.8 11.2 pH 5.2 5.4 Dissolved organic carbon (mg/L) 1.4 1.5 Nitrate (mg/L) 0.018 0.019 Phosphate (􀂗g/L) 0.9 1.0 PAR (􀂗mol m-2 s-1) 22 64