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Articles 1 - 7 of 7
Full-Text Articles in Life Sciences
Minerva 2009, The Honors College
Minerva 2009, The Honors College
Minerva
This issue of Minerva includes a story on alumna Betsy Leitch and her husband Bill Leitch, Betsy's connection to Colvin Hall, and their ongoing support of Honors; an article about Colvin Hall renovations and the opening of the Margaret Chase Smith Visiting Faculty Suite; and an interview with Pulitzer Prize-winning Honors graduate, Bettina Boxall. Other highlights include the story of Honors graduate Adam Jones and his involvement in saving the USS Alabama.
Salinity And Stratification In The Gulf Of Maine: 2001-2008, Heather E. Deese-Riordan
Salinity And Stratification In The Gulf Of Maine: 2001-2008, Heather E. Deese-Riordan
Electronic Theses and Dissertations
The salinity and vertical density structure (stratification) of the Gulf of Maine strongly influence the physical and biological character of the region including: circulation and transport, vertical mixing, and primary productivity. Variability in salinity and stratification also provides insights into the character and timing of the oceanic waters entering the region, a key to predicting regional climate change. This thesis addresses outstanding questions related to variability in salinity and the relative role of salinity and temperature in creating stratification. Hourly observations from Ocean Observing System buoys throughout the Gulf provide the primary data source for this investigation. Analysis of estimated …
Investigating Saxitoxin Resistance In Softshell Clams (Mya Arenaria): Patterns Of Inheritance And Improvements On Methodology For Tracking And Identification, Scott A. Hamilton
Investigating Saxitoxin Resistance In Softshell Clams (Mya Arenaria): Patterns Of Inheritance And Improvements On Methodology For Tracking And Identification, Scott A. Hamilton
Electronic Theses and Dissertations
Attempts to characterize and study the population dynamics of the softshell clam Mya arenaria in relation to a mutation which confers resistance to paralytic shellfish toxins are complicated by a lack of non-lethal genotyping techniques, reliable tagging methods and an understanding of the inheritance patterns of the marker. Presented here, is a straightforward and non-lethal technique for clam genotyping, a new method for the long term tagging of clams, and the offspring genotype frequencies from a number of pair matings between clams of known genotype. Hemolymph extracted from M. arenaria was used directly in a polymerase chain reaction (PCR) to …
Collaborative Research: The Response Of Lakes To Disturbance And Climate Change: Calibrating Sedimentary Records To Test The Landscape Position Concept, Jasmine E. Saros
Collaborative Research: The Response Of Lakes To Disturbance And Climate Change: Calibrating Sedimentary Records To Test The Landscape Position Concept, Jasmine E. Saros
University of Maine Office of Research Administration: Grant Reports
Landscape disturbance and climate change affect lakes in proportion to their contact with ground water, sometimes resulting in different responses in neighboring lakes. This project develops methods for reconstructing past water chemistry and food webs of lakes. The biological and chemical deposits in surface sediment samples will be compared with the water in 62 modern lakes. The resulting relationships will be tested by comparing sediment cores with 24 years of observations from the North Temperate Lakes Long Term Ecological Research (NTL-LTER) site. The methods will then be used to reconstruct 150 years of history for several lakes, adding perspective to …
Collaborative Research: Abandoned Elephant Seal Colonies In Antarctica: Integration Of Genetic, Isotopic, And Geologic Approaches Toward Understanding Holocene Environmental Change, Brenda L. Hall
University of Maine Office of Research Administration: Grant Reports
During previous NSF-sponsored research, the PI's discovered that southern elephant seal colonies once existed along the Victoria Land coast (VLC) of Antarctica, a region where they are no longer observed. Molted seal skin and hair occur along 300 km of coastline, more than 1000 km from any extant colony. The last record of a seal at a former colony site is at ~A.D. 1600. Because abandonment occurred prior to subantarctic sealing, disappearance of the VLC colony probably was due to environmental factors, possibly cooling and encroachment of land-fast, perennial sea ice that made access to haul-out sites difficult. The record …
Tb202: Composition And Biomass Of Forest Floor Vegetation In Experimentally Acidified Paired Watersheds At The Bear Brook Watershed In Maine, Peter Kenlan, G. B. Wiersma, A. S. White, I. J. Fernandez
Tb202: Composition And Biomass Of Forest Floor Vegetation In Experimentally Acidified Paired Watersheds At The Bear Brook Watershed In Maine, Peter Kenlan, G. B. Wiersma, A. S. White, I. J. Fernandez
Technical Bulletins
The percentage cover (abundance), frequency of occurrence, biomass, species richness, and species diversity of understory herbs was measured on a paired watershed ecosystem in eastern Maine, USA. This paired watershed site (Bear Brook Watershed in Maine, BBWM) has had the West Bear Brook Watershed treated bi-monthly with granular ammonium sulfate at a rate of 28.8 kg S ha-1 yr-1 and 25.2 kg N ha-1 yr-1 since 1989. East Bear Brook Watershed serves as the reference site. More than 100 plots were randomly located across the two watersheds. The data suggest that there is generally a lower frequency of occurrence of …
Maine Forest Landowner Study, James Acheson
Maine Forest Landowner Study, James Acheson
University of Maine Office of Research Administration: Grant Reports
One of the most important questions for resource management is, under what conditions will users conserve the resources on which their livelihood depends? This project studies the forest management strategies of different types of forest landowner groups in Maine. Some owners are doing a far better job of managing their forests sustainably than are others. The quality of management practices is a crucial issues at this time, because the rapid depletion of forests is a world-wide problem. Maine is a particularly good laboratory to study forest management issues because it is the most heavily forested state in the country, and …