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Arboreal arthropod associations with epiphytes following gap harvesting in the Acadian forest of Maine

Problem Addressed: Sensitivity of Collembola, Araneae, and Diptera to forest management.

Goal(s)/Objective(s): Further examination of gap harvesting on Collembola and their associations with epiphytes and arthropods.

Key Findings: The correlation among bryophytes, Collembola (springtails) and Araneae (spiders) suggest a potential trophic interaction where arboreal spiders, during early developmental stages, were dependent upon availability of Collembolan prey

Recommendation: Dipterans may be good candidates as indicators of forest management impacts on the larger arthropod community

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Early stand production of hybrid poplar and white spruce in mixed and monospecific plantations in eastern Maine

Problem Addressed: Potential benefits of increasing intensity of silvicultural practices on Maine's forestlands.

Goal(s)/Objective(s): Compare early growth of pure white spruce, pure hybrid poplar, and white spruce-hybrid poplar mixed-species plantations on a typical reforestation site in eastern Maine.

Key Findings: Three years post planting, hybrid poplar height and ground line diameter growth rates began to diverge among clones; by 6 years, the Populus nigra x Populus maximowiczii clone clearly outperformed three other Populus spp. clones both in pure stands and in mixtures with white spruce. In mixture, yield of white spruce declined as yield of hybrid poplar increased.

Recommendation: Forest management in northeastern North America could benefit from increasing intensities of silviculture and establishing more plantations.

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Influence of management intensity on the productivity of early successional Acadian stands in eastern Maine

Problem Addressed: Response of early successional stands to management

Goal(s)/Objective(s): Document response of early successional stands to management inputs designed to shift species composition

Key Findings: After 7 years, yields of mixedwood treatments were greater than conifer release treatments; yields of hardwood thinning treatments were similar to the untreated control, but with lower densities.

Recommendation: Early successional stands can be effectively managed during early stand development to improve growth and the longer term composition

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Forest Health Documents

Arboreal arthropod associations with epiphytes following gap harvesting in the Acadian forest of Maine

Early stand production of hybrid poplar and white spruce in mixed and monospecific plantations in eastern Maine

Influence of management intensity on the productivity of early successional Acadian stands in eastern Maine

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