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Full-Text Articles in Life Sciences
The Long-Term Effects Of A Group-Selection Timber Harvest On The Bird Community Of An Oak-Pine Forest In Maine, Stephen P. Campbell
The Long-Term Effects Of A Group-Selection Timber Harvest On The Bird Community Of An Oak-Pine Forest In Maine, Stephen P. Campbell
Electronic Theses and Dissertations
Bird populations have been monitored at the Holt Research Forest in Arrowsic, Maine since 1983 as part of a long-term forest ecosystem study. In the winter of 1987-1988, 10 ha of the 40-ha study area were subjected to a group-selection timber harvest (i.e., a harvest that creates canopy gaps by removing small groups of trees). I analyzed the first 20 years of these data (5 years of pre-harvest data and 15 years of post-harvest data) for changes in abundance and spatial distribution of birds in response to the harvest. Although species’ responses to the group-selection harvest were idiosyncratic, two general …
Physiological Stress In Native Brook Trout (Salvelinus Fontinalis) During Episodic Acidification Of Streams In The Great Smoky Mountains National Park, Keil Jason Neff
Physiological Stress In Native Brook Trout (Salvelinus Fontinalis) During Episodic Acidification Of Streams In The Great Smoky Mountains National Park, Keil Jason Neff
Masters Theses
Episodes of stream acidification are suspected to be the primary cause of the extirpation of native southern brook trout (Salvelinus fontinalis) from six headwater streams in the Great Smoky Mountains National Park (GRSM). During periods of increased flow from storm events, stream pH can drop below 5.0 (minimum of 4.0) for 2-days or longer. To provide evidence that native brook trout are impacted by stream acidification, in situ bioassay experiments were conducted. Changes in stream water chemistry and brook trout physiology were determined during a 36-hour acidic episode at three remote headwater stream sites in the Middle Prong of the …