Digital Commons Network^™

Regional Differences Of Climate Change In Maine: Flow Rates, Precipitation, And Snowpack, Caitlyn Rose Daigle, Alex James Debo, Jason Daniel Moore, Lucky Mourredes, Cara Wren Perry, Eme L. Saverese, Kennedy Grace Todd, Sophia Lydia Winters

Research Learning Experiences (RLEs)

● Maine winters are changing rapidly, associated with changes in climate.

● These climate-linked changes are implicated in flooding, changes in snowpack, and changes in flow regimes in Maine.

● In this study, four different regions in Maine were analyzed to evaluate changes over time in snowpack, river ice, fall-through-spring precipitation,February Snowpack water equivalent

Seasonal Variability In Peak Flow Of Maine Rivers, Brianna L. Benson, Salfa Hendrix, Christopher Houdeshell, Emma Mae Hovencamp, Kaylee M. Perron, Wyeth Bird Purkiss

Research Learning Experiences (RLEs)

Questions and Hypotheses

• How has the timing of peak flow changed over time? ○ Hypothesis: Peak flow has moved earlier in the spring due to a warming climate melting snow earlier.

• How has the variation of flow changed over time?

○ Hypothesis: Flow has grown more

variable in more recent years due to an increase in more variable precipitation patterns, especially in the spring months.

Tapping The Sweet Spot: Predicting The Suitability Of A Woodlot’S Potential To Transition Into A Productive Sugarbush In Maine, Deven M. Teisl

Non-Thesis Student Work

Through conversations with Dr. Sara Velardi, a postdoctoral research associate who has been doing research on maple producers’ scale management decisions in Maine, most current owners and operators in the maple syrup industry have the common interest of expanding their current operations, but they are unsure of how to approach that problem. Due to these current issues, my research focused on creating a sugarbush assessment tool. This assessment tool consists of a set of guidelines which can be utilized by current or future producers and can be used to easily assess woodlots without having to hire a consulting forester to …

The Impact Of Climate Change: An In-Depth Analysis Of Warming Ocean Water Temperatures And The Effects On Maine’S Lobstering Industry And Subsequent Effect On The State Economy, Bryce Nitchman

Honors College

The effects of climate change are often not visible to the human eye and can, therefore, be hard to detect. As society has progressed since the industrial revolution, the effects of climate change are omnipresent in global, regional, and local air and water temperatures. This research aims to highlight the correlation between the effects of climate change on potentially rising ocean water temperatures in the Gulf of Maine, and the possible resulting adverse impacts on Maine’s lobster industry and state economy. I will be using data compiled over the last several decades from the University of Maine’s Climate Change Institute …

Field Relations, Geochemistry, And Geochronology Of The Rocks At Perkins Point, Castine, Maine, Robert Knowles, Douglas Reusch

Individual Projects

Northwest of Castine, Maine is the coastline known as Perkins Point, which is home to about 500 meters of bedrock exposure. Previous mapping projects of Penobscot Bay indicate a discrepancy in rock type for this area, and therefore the origin of the rocks is unclear. Preliminary observations suggest that these rocks are mostly volcanic. The goal of this project is to determine the field relations, geochronology, and geochemistry to conclude the true nature of these rocks and ultimately create a geological map.

How Acidic Sediments And Seawater Affect Interactive Effects Of Predation On Survival, Growth, And Recruitment Of Wild And Cultured Soft-Shell Clams, Mya Arenaria L., Along A Tidal Gradient At Two Intertidal Sites In Eastern Maine, Brian F. Beal, William Otto

Miscellaneous Publications

No abstract provided.

High Net Loss Of Intertidal Wetland Coverage In A Maine Estuary By Year 2100, Jack R. Mclachlan

Biology and Ecology Faculty Scholarship

Rising sea levels and coastal land use are predicted to synergistically impact coastal wetlands by reducing their extent and ecosystem functioning through a process known as “coastal squeeze”. Impervious surfaces associated with coastal development prevent the natural process of wetland migration, whereby intertidal wetland area is lost at its seaward edge to rising low water lines, but is replaced by eroding uplands and accumulating new wetland at its landward edge. As these constructed surfaces prevent the replacement of lost wetland, intertidal wetlands are “squeezed” by rising sea levels until they disappear. This study uses geographic information system (GIS) to predict …

Forecasting Labor Force Participation At The Regional Level In The United States: The Case Of Maine, Maryam Kashkooli

Honors College

This project attempts to investigate the future of labor force participation in Maine using an econometric forecasting approach. Forecasting has become an increasingly popular form of statistical analysis which uses historical distributions to help estimate future distributions of econometric models. There exists extensive literature on forecasting employment, however the literature on forecasting labor force participation is relatively small. I adapt existing econometric models and make use of time series information on sociodemographic factors such as age and net migration in order to determine how Maine’s changing demographic structure is affecting its labor force and how these effects will carry on …

Motivation & Meaning In Maine’S Thrift Culture, Johanna Lunn

Honors College

The production of material goods requires resource extraction, leading to the release of carbon emissions into the atmosphere. With the growing threat of climate change, the demand for virgin production is increasingly problematic. Reusing products inherently decreases the demand for material production. As a result, reuse has been shown to mitigate many of the negative impacts of climate change. This thesis focuses on the potential for waste reduction by exploring Mainers’ motivations for participating in Maine’s reuse markets. Eight semi-structured interviews with secondhand shoppers were conducted. Qualitative analysis revealed that four major categories represented consumer motivations to purchase secondhand goods: …

Small-Scale Maine Farmers’ Perceptions And Adaptations To Climate Change, Shireen Luick

Honors College

Climate change is affecting agricultural practices in Maine and all over the world, and this research aims to highlight the effects of climate change on small-scale Maine farmers. Maine has a highly variable climate as well as a strong tradition in agriculture and thus it is important to understand how the different changes may affect farmers statewide. Ten interviews were conducted with small-scale farmers in western Maine. We ask what farmers are perceiving in terms of climatic changes and how they may be adapting to those ongoing changes. Several adaptations resulted from both shifting temperature and precipitation patterns. This research …

Bees Of Maine, With A State Species Checklist, Alison C. Dibble, Francis A. Drummond, Constance Stubbs, Michael Veit, John S. Ascher

Biology and Ecology Faculty Scholarship

We present a new county checklist developed from bee research in Maine since the 1800s. The list contains 278 bee species in 37 genera and 6 families, of which all but 8 are native, with ≥50 taxa each in Andrena and Lasioglossum. Data for 16 counties from publications, museum collections, and recent surveys varied in number of species from 8 (Androscoggin) to 197 (Hancock). Research since 1930 on Vaccinium angustifolium (Lowbush Blueberry) led to many records. Twenty-one species are considered unusual, including 3 first recorded in 2016: Epeoloides pilosulus, Melitta melittoides, and Holcopasites calliopsidis. Maine records …

Late Glacial And Holocene History Of The Penobscot River In The Penobscot Lowland, Maine, Roger Leb. Hooke, Paul R. Hanson, Danile F. Belknap, Alice R. Kelley

Conservation and Survey Division

When the Laurentide ice sheet retreated rapidly (~150 m/a) across the Penobscot Lowland between ~16 and ~15 ka, the area was isostatically depressed and became inundated by the sea. Silt and clay were deposited, but no significant moraines or deltas were formed. The Penobscot River was reborn at ~14 ka when ice retreated onto land in the upper reaches of the river’s East Branch. As isostatic rebound exceeded sea level rise from melting ice, the river extended itself southward. Between ~13.4 and 12.8 ka, it established a course across marine clay and underlying glacial till in the Lowland. Its gradient …

An Analysis Of The Maine Solid Waste Management Hierarchy And Recommendation For Future Implementation, Jaime Steven

Honors College

The current Solid Waste Management Hierarchy does not adequately deter land disposal of waste in Maine. In this paper, I analyze the Maine State Solid Waste Management Hierarchy as it reads in Title 38 M.R.S.A. § 2101, found in Appendix B. The purpose of this paper is to address the hierarchy’s issues, as well as to offer additions to the hierarchy that will help in its goal of reducing solid waste landfilled. In this paper I analyze the original intentions of the hierarchy when it was enacted, and addresses the faults within the hierarchy that do not aid these intentions …

Recruitment Facilitation And Spatial Pattern Formation In Soft-Bottom Mussel Beds, John A. Commito, Ann E. Commito, Rutherford V. Platt, Benjamin M. Grupe, Wendy Dow Piniak, Natasha J. Gownaris, Kyle A. Reeves, Allison M. Vissichelli

Environmental Studies Faculty Publications

Mussels (Mytilus edulis) build massive, spatially complex, biogenic structures that alter the biotic and abiotic environment and provide a variety of ecosystem services. Unlike rocky shores, where mussels can attach to the primary substrate, soft sediments are unsuitable for mussel attachment. We used a simple lattice model, field sampling, and field and laboratory experiments to examine facilitation of recruitment (i.e., preferential larval, juvenile, and adult attachment to mussel biogenic structure) and its role in the development of power-law spatial patterns observed in Maine, USA, soft-bottom mussel beds. The model demonstrated that recruitment facilitation produces power-law spatial structure similar …

Leaf Area And Structural Changes After Thinning In Even-Aged Picea Rubens And Abies Balsamea Stands In Maine, Usa, R. Justin Derose, Robert S. Seymour

Wildland Resources Faculty Publications

We tested the hypothesis that changes in leaf area index (LAI m2 m−2) and mean stand diameter following thinning are due to thinning type and residual density. The ratios of pre- to postthinning diameter and LAI were used to assess structural changes between replicated crown, dominant, and low thinning treatments to 33% and 50% residual density in even-aged Picea rubens and Abies balsamea stands with and without a precommercial thinning history in Maine, USA. Diameter ratios varied predictably by thinning type: low thinnings were 0.7 but 1.0 . LAI change was affected by type and intensity of thinning. On average, …

Changing Water Quality In Great Pond: The Roles Of Lake Sediments, Invasive Macrophytes, And The Watershed, Colby Environmental Assessment Team, Colby College, Problems In Environmental Science Course (Biology 493), Colby College

Colby College Watershed Study: Great Pond (2012, 2010, 1998)

Eutrophication as a result of human activity is a threat to lake water quality globally and within the state of Maine. Great Pond, in the Belgrade Lakes region of Maine, has traditionally been an oligotrophic lake that is experiencing early signs of eutrophication and is currently classified as a mesotrophic lake. In the fall of 2012, the Colby Environmental Assessment Team (CEAT) measured the primary sources of nutrient loading to Great Pond including the catchment and the lake sediment, current water quality in Great Pond, and the potential impact of the variable milfoil invasion on the lake’s water quality. An …

Adrift In A Sea Of Information About Sustainable Seafood: The Maine Consumer Perspective, Catherine V. Schmitt

Maine Sea Grant Publications

Various methods and strategies for communicating "sustainability" information about seafood are reviewed. Seafood guides (e.g., Monterey Bay Aquarium) are comparatively analyzed for their ratings of Maine seafood. There is no single source for consumers to obtain information about seafood fishery status, health benefits, safety risks, recreational fishing opportunities, and local sources

for Maine seafood.

The Employment Impacts Of Wind Power Development In Maine 2003-2010, Charles S. Colgan

Economic Impact Analysis

The development of wind power in Maine has emerged as a significant economic opportunity in the past several years, providing one of the few growing sectors in the latter half of the last decade. The employment impact of this development has been discussed in regulatory filings before, but has not been examined in detail using post-construction data on actual wind power projects. This report examines the employment impacts of three major wind power projects: Mars Hill in Aroostook County, Stetson Mountain in Washington County, and Kibby Mountain in Franklin County. (Stetson and Kibby were undertaken in two phases.) These projects …

The Missing Link: The Ecology Of The Serpentine And The Implications For East And North Ponds [Presentation], Colby Environmental Assessment Team, Colby College, Problems In Environmental Science Course (Biology 493), Colby College

Colby College Watershed Study: East and North Ponds (2011, 1999, 1996, 1991)

No abstract provided.

Watershed Survey And Pilot Lcc Project, Norman Turgeon, Three Ponds Protective Association

PREP Reports & Publications

This describes two projects accomplished in 2010 by the Three Ponds Protective Association (TPPA) and several partners to identify and reduce soil erosion due to storm water runoff into the Milton Three Ponds

Results Of The Gulfwatch 2010 Samples : Memorandum, Matthew A. Wood

PREP Reports & Publications

The purpose of this memorandum is to document the sample collection activities for Gulfwatch 2010. .

Impacts Of Shoreline Development On The Littoral Zone Of Great Pond, Problems In Environmental Science Course (Biology 493), Colby College, Colby Environmental Assessment Team, Colby College

Colby College Watershed Study: Great Pond (2012, 2010, 1998)

The Colby Environmental Assessment Team (CEAT) investigated the littoral zone of Great Pond in the Belgrade Lakes region of central Maine. Data collection occurred in September and October and analysis followed in October and November of 2010. Physical, biological, and chemical parameters were assessed to examine the impacts of shoreline development on the health of the littoral community. The littoral zone and adjacent riparian areas were sampled to allow comparison of aquatic and terrestrial parameters among different levels of shoreline development.

2010 Piscataqua Region Comprehensive Conservation And Management Plan (Ccmp), Piscataqua Region Estuaries Partnership

PREP Reports & Publications

In the fall of 2010, the Piscataqua Region Estuaries Partnership (PREP) completed an 18-month effort to understand current and future environmental issues affecting the Region’s estuaries, to establish realistic goals and objectives for the next 10 years, and to create effective action plans to systematically achieve the shared environmental goals of a broad base of Regional stakeholders.

With input from more than 150 individuals, representing 82 organizations, PREP compiled the 2010 Piscataqua Region Comprehensive Conservation and Management Plan (CCMP) that lays the foundation for work over the next decade to protect and restore the Region’s estuaries and associated watersheds

Slides: Next Evolutionary Steps In State Instream Flow Programs, Lawrence J. Macdonnell

Western Water Law, Policy and Management: Ripples, Currents, and New Channels for Inquiry (Martz Summer Conference, June 3-5)

Presenter: Lawrence J. MacDonnell, attorney and consultant, Boulder, CO

27 slides

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 …

Preserving Assets In At-Risk Municipalities: Financial Strategies For Climate Change Adaptation, New England Environmental Finance Center

Climate Change

A large share of America's population, businesses and economic activity now occurs in coastal areas. At the same time, during this century many coastal communities are likely to be severely impacted by sea level rise and increased storm surge and tidal flooding.

“What to do” about this vulnerability is the subject of this brief. It is intended to help municipalities identify courses of action and steps they might take toward increasing their resilience, especially regarding financial resources that will need to be allocated toward the various strategies identified.

Study Targets Striped Bass, Catherine V. Schmitt

Maine Sea Grant Publications

This article in the Bangor Daily News profiles the Sea Grant-funded research of Dr. Joe Zydlewski, who is studying the striped bass population in the Penobscot River. A must read for all striper fans.

Alewives: Feast Of The Season, Catherine V. Schmitt

Maine Sea Grant Publications

Alewives are sea-run, or diadromous, fish that spend most of their lives in the Atlantic Ocean but return as adults to coastal rivers in spring to spawn in freshwater streams and ponds. This article in Maine Boats, Homes, & Harbors magazine discusses the natural and cultural history of Maine's native runs of alewives and other sea-run fish.

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 …

Biomass And Biofuels In Maine: Estimating Supplies For Expanding The Forest Products Industry, Jonathan Rubin, Kate Dickerson, Jacob Kavkewitz

Energy & the Environment

This paper estimates the renewable energy potential of Maine’s forest resources, and how much energy these resources could potentially provide the state. Using the most recent state-specific data available, and a methodology similar to the Billion Tons Report, we find that ethanol production from Maine’s forest residues could potentially provide 18% of Maine’s transportation (gasoline) fuels with a fermentation wood to ethanol process. Making Fischer-Tropsch diesel (F-T diesel) using forest residues can replace 39% of Maine’s petro-diesel consumption. Actual levels of biofuels that can be produced will depend on conversion factors and forestry residue removals that are subject to uncertainty.