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Full-Text Articles in Physical Sciences and Mathematics
Collaborative Research: Interactive Effects Of Chronic N Deposition, Acidification, And Phosphorus Limitation On Coupled Element Cycling In Streams, Kevin S. Simon, Ivan J. Fernandez, Stephen Norton
Collaborative Research: Interactive Effects Of Chronic N Deposition, Acidification, And Phosphorus Limitation On Coupled Element Cycling In Streams, Kevin S. Simon, Ivan J. Fernandez, Stephen Norton
University of Maine Office of Research Administration: Grant Reports
Human activity has doubled the amount of nitrogen on the landscape, creating a pollution problem and changing the balance among multiple nutrients that limit biological activity in ecosystems. At the same time, other disturbances, such as acidification, interact with nitrogen enrichment in ways that strongly influence the productivity and health of terrestrial and aquatic ecosystems. This project examines the interactions among multiple elements and disturbances (nitrogen, phosphorus, metals, and acidification) along a continuum from the atmosphere through soils to streams. This project takes advantage of two unique experiments in which entire watersheds have been experimentally enriched with nitrogen and acid …
Effect Of Forest Vegetation On Nest-Site Selection By Spruce Grouse Across Two Spatial Scales, Nathaniel Scott Parkhill
Effect Of Forest Vegetation On Nest-Site Selection By Spruce Grouse Across Two Spatial Scales, Nathaniel Scott Parkhill
Honors College
The spruce grouse (Falcipennis canadensis) is a gallinaceous bird that is threatened or endangered throughout much of the southeastern limit of its range. Generally associated with short-needled conifer forests like those characteristic of northern Maine, this species may be particularly sensitive to recent changes in timber harvesting practices. I examined nest-site selection to better understand spruce grouse habitat associations in northern Maine. In the summer of 2013, I located the nests of 12 female spruce grouse in commercially-managed forests of north-central Maine. I measured vegetation characteristics at nests and at sampling points 30 meters from nests, as well …
A Preliminary Examination Of The Effects Of Local Precipitation On Beach Water Quality At 3 Coastal Beaches In Maine, M. Sims, K Kaczor
A Preliminary Examination Of The Effects Of Local Precipitation On Beach Water Quality At 3 Coastal Beaches In Maine, M. Sims, K Kaczor
Maine Sea Grant Publications
Stormwater runoff can negatively impact recreational water quality. When rain falls on the land, the water washes over the surface picking up bacterial pollutants from malfunctioning septic systems, wildlife, pet waste, etc. and are transported to the coastal surf-zone by runoff directly to the beach or via freshwater inputs such as rivers, streams and storm drains. The lag time (24-30 hrs) in obtaining fecal indicator bacteria results may pose a public health risk; therefore, some states have implemented an automatic precautionary rainfall advisory system where particularly high risk beaches are closed when rainfall exceeds predetermined levels which can vary widely …