Open Access. Powered by Scholars. Published by Universities.®
Physical Sciences and Mathematics Commons™
Open Access. Powered by Scholars. Published by Universities.®
Articles 1 - 3 of 3
Full-Text Articles in Physical Sciences and Mathematics
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 …
Biodegradation And Feasibility Of Three Pleurotus Species On Cigarette Filters, Raymond Updyke
Biodegradation And Feasibility Of Three Pleurotus Species On Cigarette Filters, Raymond Updyke
Honors College
This study was designed to evaluate the biodegradation and feasibility of growing three oyster mushroom species - Pleurotus ostreatus, Pleurotus citrinopileatus, and Pleurotus djamor - on three different cigarette filter waste substrates: intact cigarette filters, blended cigarette filters, and smoked, intact cigarette filters. Cigarette filters are a common waste and are made primarily of cellulose acetate. Oyster mushrooms (Pleurotus spp.) have been shown to degrade synthetic polymers similar to cellulose acetate. In the experiment, the substrates were inoculated with mushroom spawn and placed in a growth chamber maintained at 24° C. After a six-week period, mycelium …
The Effects Of Flooding On The Microbial Communities Of Sparrow Eggs In A Temperate Maine Salt Marsh, Mattie Paradise
The Effects Of Flooding On The Microbial Communities Of Sparrow Eggs In A Temperate Maine Salt Marsh, Mattie Paradise
Honors College
Microbial infection has been shown to reduce hatching success for the eggs of tropical birds. In these ecosystems, humidity and temperature encourage bacterial growth and the transport of microbes through the pores of the egg shell. A single study in a temperate ecosystem found no noticeable change of microbial communities during the length of the incubation cycle, and thus no increased risk of microbial infection by the time of hatching. This study, however, took place in the arid Mediterranean type climate of California, a locale that likely diminishes the abilities of microbial communities to colonize and grow on egg surfaces. …