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Articles 1 - 20 of 20
Full-Text Articles in Life Sciences
A Watershed Analysis Of Salmon Lake And Mcgrath Pond: Implications For Water Quality And Land Use Management, Colby Environmental Assessment Team, Colby College, Problems In Environmental Science Course (Biology 493), Colby College
A Watershed Analysis Of Salmon Lake And Mcgrath Pond: Implications For Water Quality And Land Use Management, Colby Environmental Assessment Team, Colby College, Problems In Environmental Science Course (Biology 493), Colby College
Colby College Watershed Study: Salmon Lake and McGrath Pond (2009, 1993)
In the summer and fall of 2009, the Colby Environmental Assessment Team (CEAT) studied the water quality of Salmon Lake and McGrath Pond, located in the Belgrade Lakes Region of Maine. The physical, chemical and biological characteristics of water quality were measured and analyzed to evaluate the current health of these lakes. Water quality data collected during the summer and fall of 2009 were compared with data from previous years to study the historic water quality trends. Land use patterns in the Salmon/McGrath watershed were also examined to investigate their impact on the lake water quality. The water quality trends …
A Watershed Analysis Of Pattee Pond: Implications For Water Quality And Land Use Management, Problems In Environmental Science Course (Biology 493), Colby College, Colby Environmental Assessment Team, Colby College
A Watershed Analysis Of Pattee Pond: Implications For Water Quality And Land Use Management, Problems In Environmental Science Course (Biology 493), Colby College, Colby Environmental Assessment Team, Colby College
Colby College Watershed Study: Pattee Pond (2008, 1992)
The Colby Environmental Assessment Team (CEAT) investigated the impact of land use patterns on the water quality of Pattee Pond in Winslow, Maine, during the summer and fall of 2008. Physical, chemical, and biological characteristics of water quality were analyzed to evaluate the current health of the lake. Data collected were compared with previous studies conducted by the Maine Department of Environmental Protection (DEP) and CEAT to examine changes in water quality and land use over time. Trends in Pattee Pond water quality suggest an improvement since the 1970s. However, the lake is still experiencing algal blooms resulting from phosphorus …
The Movement Of The Gastrop Littorina Littorea In The Intertidal Zone During The Onset Of Winter, Jon Lefcheck
The Movement Of The Gastrop Littorina Littorea In The Intertidal Zone During The Onset Of Winter, Jon Lefcheck
Undergraduate Research Symposium (UGRS)
The movement of the snail Littorina littoreaon the North Atlantic coast is poorly understood. Most research has concentrated on the vertical distribution of the snail, and suggests that it prefers the low intertidal zone where its food source is most plentiful. In the winter, this distribution is reinforced by a documented seaward migration of snails from the high intertidal zone in response to falling temperatures. From October 14, 2006 to January 22, 2007, I examined the individual movements and recovery of snails in response to the onset of winter. I proposed that falling water and air temperatures drive the majority …
A Pollen Chase Experiment; Examining Varying Levels Of Embryonic Inbreeding Depression, Emily Wilson, Judy Stone
A Pollen Chase Experiment; Examining Varying Levels Of Embryonic Inbreeding Depression, Emily Wilson, Judy Stone
Undergraduate Research Symposium (UGRS)
A pollen chase experiment was performed upon three Costa Rican populations of Witheringia solanacea to examine the breakdown of genetically enforced self incompatibility (SI) and the extent of embryonic inbreeding depression. Self-pollen was applied in the bud, with outcross pollen applied one day later, and outcross pollinations at both intervals as a control. A variety of responses were found among the populations. BOHS readily accepted self pollen and suffered from very low inbreeding depression. Monteverde and Las Cruces both have lower fruit set with self-pollination precedence indicating that bud pollinations can overcome the self-incompatibility response and that embryonic death due …
Measuring Ultrasonic Communication Between Mouse Pups And Adult Mother Mice, Katie Ludwig
Measuring Ultrasonic Communication Between Mouse Pups And Adult Mother Mice, Katie Ludwig
Undergraduate Research Symposium (UGRS)
Measuring ultrasonic communication provides us with a way to study parental influence on animals. In this study I measured the ultrasonic communication between mouse pups and two maternal females, one of which who had given birth to the pups and the other had raised them. I found that there was no significant difference between the amount of noise expressed by pups in response to each the biological mother and foster mother test groups. Mouse pups call to maternal females regardless of genetic relatedness. Communication in mice may be a more complicated model because of their communal nature.
Differential Habituation Of Male Betta Splendens To Qualitatively Different Stimuli, Lauren Baard
Differential Habituation Of Male Betta Splendens To Qualitatively Different Stimuli, Lauren Baard
Undergraduate Research Symposium (UGRS)
Habituation is a learning mechanism that functions to decrease the amount of energy and attention focused on a certain stimuli. Male Siamese Fighting Fish, Betta splendens, are territorial animals that defend their territories using a number of aggressive displays. Male Bettas have previously shown the ability to habituate to the presence of a conspecific male when visually exposed to each other. Due to the costly nature of many of the male Betta’s displays, I hypothesized that male Bettas should differentially habituate to qualitatively different stimuli. I presented each of three groups of male Betta splendens with a different stimulus, each …
The Isolation And Characterization Of Multiply Antibiotic Resistant Strains Of Fish Pathogenic Flavobacterium Species, Sarah E. Clark, Jaehee Yun, Justin Guay
The Isolation And Characterization Of Multiply Antibiotic Resistant Strains Of Fish Pathogenic Flavobacterium Species, Sarah E. Clark, Jaehee Yun, Justin Guay
Undergraduate Research Symposium (UGRS)
Since the development of the first antibiotics in the 1940’s, there has been widespread overuse in both clinical and agricultural applications. Antibiotic resistance has become a significant problem as a result of subsequent dissemination of antibiotics into the environment, and multiply-resistant strains of bacteria are now a major pathogenic threat. In this study eight separate strains of Flavobacterium responsible for recent disease outbreaks in fish hatcheries throughout Maine were collected and analyzed. All eight strains were found to be resistant to high levels of a number of different antibiotics, including those used for aquaculture as well as human chemotherapeutic applications. …
Climate Change And Its Effects On Polar Bears, Alex C. Jospe, Bethany C. Peck, Emily Sinnott
Climate Change And Its Effects On Polar Bears, Alex C. Jospe, Bethany C. Peck, Emily Sinnott
Undergraduate Research Symposium (UGRS)
Polar bears are key indicators of the effects of climate change on the arctic ecosystem, because their existence is directly related to the sea ice habitat, where they hunt. As the Arctic continues to warm, their habitat will be reduced further and local extinction is likely to occur, especially in southern populations.
Variation In Beach Profile And Sediment Characteristics At Popham Beach, Phippsburg, Me, Kathryn Lidington
Variation In Beach Profile And Sediment Characteristics At Popham Beach, Phippsburg, Me, Kathryn Lidington
Undergraduate Research Symposium (UGRS)
No abstract provided.
The Impact Of Land Use Patterns And Watershed Characteristics On China Lake, Kennebec County, Maine, Rachel N. Carr, Caroline A. Polgar, Jakob B. Moe, F. Russell Cole, David H. Firmage, Kirsten L. Ness
The Impact Of Land Use Patterns And Watershed Characteristics On China Lake, Kennebec County, Maine, Rachel N. Carr, Caroline A. Polgar, Jakob B. Moe, F. Russell Cole, David H. Firmage, Kirsten L. Ness
Undergraduate Research Symposium (UGRS)
China Lake is located in Kennebec County, Maine. Since 1983 the lake has suffered from yearly algal blooms as a result of the addition of excess nutrients. The nutrient load was amplified by erosion within the watershed. Erosion varies widely depending on a number of factors, including the slope of the land, the type of soil, and the way the land is being used. Certain land use types have a high potential to add nutrients to the environment, while others may help absorb excess nutrients and prevent erosion and runoff into the lake. A comprehensive examination of the China Lake …
Man-Made Menopause, Madeline Horwitz
Man-Made Menopause, Madeline Horwitz
Undergraduate Research Symposium (UGRS)
In this study I suggest that there are three distinct time periods mark new developments in society’s understanding of menopause, Victorian America in the mid and late nineteenth century, mid-twentieth century America, and contemporary America. This is the case not only in terms of advances in biological science, but also the ways in which the medical establishment has viewed menopause has also changed, and in terms of changes in prevalent gender assumptions. In this paper I hope to expose the ways science, history, and society has medicalized menopause, and the ways in which menopause has been viewed by individual women, …
Appendix C. Physical Measurements And Chemical Analyses Of China Lake Water Quality, Problems In Environmental Science Course (Biology 493), Colby College, Colby Environmental Assessment Team, Colby College
Appendix C. Physical Measurements And Chemical Analyses Of China Lake Water Quality, Problems In Environmental Science Course (Biology 493), Colby College, Colby Environmental Assessment Team, Colby College
Colby College Watershed Study: China Lake (2005, 1989)
No abstract provided.
A Watershed Analysis Of China Lake [Presentation], Problems In Environmental Science Course (Biology 493), Colby College, Colby Environmental Assessment Team, Colby College
A Watershed Analysis Of China Lake [Presentation], Problems In Environmental Science Course (Biology 493), Colby College, Colby Environmental Assessment Team, Colby College
Colby College Watershed Study: China Lake (2005, 1989)
No abstract provided.
Appendix C: General Data, Problems In Environmental Science Course (Biology 493), Colby College, Colby Environmental Assessment Team, Colby College
Appendix C: General Data, Problems In Environmental Science Course (Biology 493), Colby College, Colby Environmental Assessment Team, Colby College
Colby College Watershed Study: Togus Pond (2004)
No abstract provided.
Fall Data Report, Problems In Environmental Science Course (Biology 493), Colby College, Colby Environmental Assessment Team, Colby College
Fall Data Report, Problems In Environmental Science Course (Biology 493), Colby College, Colby Environmental Assessment Team, Colby College
Colby College Watershed Study: Togus Pond (2004)
No abstract provided.
Total Phosphorus, Colby College, Problems In Environmental Science Course (Biology 493), Colby College, Colby Environmental Assessment Team, Colby College
Total Phosphorus, Colby College, Problems In Environmental Science Course (Biology 493), Colby College, Colby Environmental Assessment Team, Colby College
Colby College Watershed Study: Togus Pond (2004)
No abstract provided.
An Assessment Of Water Quality, Colby College, Problems In Environmental Science Course (Biology 493), Colby College
An Assessment Of Water Quality, Colby College, Problems In Environmental Science Course (Biology 493), Colby College
Colby College Watershed Study: Togus Pond (2004)
No abstract provided.
Water Quality Results From Togus Pond, Colby College, Problems In Environmental Science Course (Biology 493), Colby College
Water Quality Results From Togus Pond, Colby College, Problems In Environmental Science Course (Biology 493), Colby College
Colby College Watershed Study: Togus Pond (2004)
No abstract provided.
A Watershed Analysis Of Threemile Pond: Implications For Water Quality And Land Use Management, Colby Environmental Assessment Team, Colby College, Problems In Environmental Science Course (Biology 493), Colby College
A Watershed Analysis Of Threemile Pond: Implications For Water Quality And Land Use Management, Colby Environmental Assessment Team, Colby College, Problems In Environmental Science Course (Biology 493), Colby College
Colby College Watershed Study: Threemile Pond (2003)
The 2003 Colby Environmental Assessment Team chose to study the Threemile Pond watershed. The Threemile Pond watershed is located in Vassalboro, China., Windsor, and Augusta, Maine. Threemile Pond is a popular site for recreation and is home to a wide range of flora and fauna. Like all other lakes in Maine, it is a young lake. However, intensive human activity in the watershed contributes a substantial amount of nutrients and the lake has algal blooms annually in the summer months. The purpose of this study was to assess the impact of land use and development on the water quality of …
Land Use Patterns In Relation To Lake Water Quality In The Great Pond Watershed, Problems In Environmental Science Course (Biology 493), Colby College, Colby Environmental Assessment Team, Colby College
Land Use Patterns In Relation To Lake Water Quality In The Great Pond Watershed, Problems In Environmental Science Course (Biology 493), Colby College, Colby Environmental Assessment Team, Colby College
Colby College Watershed Study: Great Pond (2012, 2010, 1998)
Lakes are natural resources, which have many effects on the land surrounding them, They support adjacent communities by providing water and regulating temperatures, helping to define the surrounding ecosystem, and serving as sources of drinking water as well as recreation. The prolonged presence of human activity in a watershed can disturb the physical and chemical cycles of the lake and its surrounding ecosystems (Henderson-Sellers and Markland 1987). Over time, lakes undergo a process called eutrophication, a natural aging process during which the nutrient levels increase and dissolved oxygen levels decrease (Smith and Smith 1998). As the lake ages or becomes …