Digital Commons Network^™

Ltreb: Forest Ecosystem Response To Changes In Atmospheric Chemistry And Climate At The Bear Brook Watershed In Maine (Bbwm), Ivan J. Fernandez, Stephen A. Norton, Lindsey Rustad

University of Maine Office of Research Administration: Grant Reports

The Bear Brook Watershed in Maine (BBWM) is a long-term paired, forested watershed research site with each watershed drained by a first order stream through a v-notch weir. One watershed (West Bear) has been treated bimonthly for 12 years with N and S by aerial helicopter applications, with the second watershed (East Bear) serving as the reference watershed. The objectives of this LTREB proposal are to:

1. Study the response of the calibrated East Bear Watershed to long-term patterns of ambient S, N, and base cation deposition. This will be accomplished by maintaining high quality deposition and stream export data …

Rui: The Role Of Dissolved Organic Material In Regulating Primary Production In Prairie Saline Lakes, Jasmine E. Saros

University of Maine Office of Research Administration: Grant Reports

Grasslands and converted grasslands (i.e. agricultural land) cover extensive areas in semi-arid regions of the world. Lakes situated in grasslands are usually saline and have high concentrations of dissolved organic matter (DOM). We hypothesize that DOM plays a critical role in regulating algal production in prairie saline lakes by binding nutrients and making them less available to algae. To explore this hypothesis, we will survey a suite of chemical and biological parameters in lakes from three areas in the central and northern Great Plains (ND, SD, NE). A series of experiments will be conducted in Years 2 and 3 to …

Abiotic Controls On The Tropic Status Of Oligotrophic Water, Stephen A. Norton

University of Maine Office of Research Administration: Grant Reports

This research will investigate how the elements aluminum (Al) and phosphorus (P), both originally from soil, interact in water moving through soil pores to downstream lakes in ways that prevent P from being biologically available to algae in surface waters. This causes oligotrophic conditions (i.e., water with very low nutrient concentrations). Solid aluminum hydroxide will adsorb and can permanently capture P from the water if the acidity is low. Changes in the acidity of surface waters from "acid rain", climate change, or other factors should induce changes in the interaction between Al and P, and thus changes in the biological …

The Lobster Bulletin, Fall 2008, Lobster Institute, University Of Maine

Lobster Bulletin

The Lobster Bulletin newsletter includes research updates, and information on lobsters and the lobster industry. The Lobster Institute at the University of Maine is dedicated to protecting and conserving the lobster resource, and enhancing lobstering as an industry and a way of life.

Headlines in the Fall 2008 Special Edition announcing the MTAF Challenge issue include:

• The MTAF Challenge
• Heannsler Family Helps to Meet MTAF Challenge
• Research Report: Gifts of Property: How they work and How They Can Benefit the Donor
• Basil & Harriet Heannsler Help the Lobster Institute Meet the MTAF Challenge With a Gift of Property

Acquisition Of An X-Band Satellite Data Groundstation For Regional Multidisciplinary Research, Training And Services In Maine, Andrew C. Thomas

University of Maine Office of Research Administration: Grant Reports

This Major Research Instrumentation award to University of Maine (UM) provides funds for acquisition of an X-band ground station for the real-time reception of the latest generation of earth observation satellite data. The data provide multi-spectral visible and infrared measurements of the ocean, coastal zones, forests and atmosphere. In collaboration with Rutgers University, which operates a similar system, the University of Maine group plans to offer 24/7 satellite-derived products for northeast U.S. ocean observation, merging research and operational requirements. The X-band capability significantly improves both resolution and information over an existing L-band facility at UM, and builds on the technical …

The Lobster Bulletin, Summer 2008, Lobster Institute, University Of Maine

Lobster Bulletin

The Lobster Bulletin newsletter includes research updates, and information on lobsters and the lobster industry. The Lobster Institute at the University of Maine is dedicated to protecting and conserving the lobster resource, and enhancing lobstering as an industry and a way of life.

Headlines in the Summer 2008 issue include:

• Lobstermen's Town Meeting Draws Comments from Australia
• The Lobster Institute's C.O.R.E. Initiative Receives NOAA Funding
• Lobster College at Kenniston Hill Inn B&B
• Research Report: Lobster Health Coalition
• Research Report: Determining the Health Risks of Lobster Bait to Marine Animals
• Research Report: Study to Investigate Lobster Stressors
• Pat and Herb Hodgkins …

Adaptive Divergence Versus Gene Flow In The Wild: Evaluation In Trinidadian Guppy Populations, Michael T. Kinnison, David N. Reznick

University of Maine Office of Research Administration: Grant Reports

This research investigates the impact of gene flow (genetic exchange among populations) on the evolution of biological diversity. The investigators will first document background patterns of diversity in adaptive traits (e.g., morphology, color pattern, life history) and gene flow for wild populations of Trinidadian guppies that face different environmental conditions (high vs. low predation). The investigators will then perform an experimental manipulation of the rate of gene flow between selected populations in order to evaluate theoretical predictions about the impact of gene flow on variation in adaptive traits.

Gene flow is pervasive in the wild, but the activities of humans …

Peet: Lower Worms Of The Meiofauna - Models For Early Metazoan Evolution, Seth Tyler

University of Maine Office of Research Administration: Grant Reports

Among the small invertebrates living between sand grains in the marine environment, are tiny, cryptic worms that many consider to be the most primitive of all bilaterally symmetrical animals (that is, all animals excluding the cnidarians and sponges). These worms include two small groups called acoel and catenulid turbellarians which are now classified in the phylum Platyhelminthes (flatworms) but that, according to some systematists, may not even be related to the more familiar flatworms such as planarians and polyclads. Another of these primitive worm groups is the Gnathostomulida, whose relationships to other phyla of invertebrates have been similarly controversial; by …

The Lobster Bulletin, Spring 2008, Lobster Institute, University Of Maine

Lobster Bulletin

The Lobster Bulletin newsletter includes research updates, and information on lobsters and the lobster industry. The Lobster Institute at the University of Maine is dedicated to protecting and conserving the lobster resource, and enhancing lobstering as an industry and a way of life.

Headlines in the Spring 2008 issue include:

• Lobster Institute Hosts 5^th Canadian/U.S. Lobstermen's Town Meeting
• The Business of Lobstering
• Research Report: Assessing Affects of the Lobster Culture on Coastal Tourism
• Even Lobsters Need Friends

The Dandy Scroll, Spring 2008, University Of Maine Pulp And Paper Foundation

General University of Maine Publications

The Spring 2008 issue of The Dandy Scroll newsletter produced by the University of Maine Pulp and Paper Foundation.

Collaborative Research: What Limits Denitrification And Bacterial Growth In Lake Bonney, Taylor Valley, Antarctica?, Mark L. Wells, Charles Trick

University of Maine Office of Research Administration: Grant Reports

Denitrification is the main process by which fixed nitrogen is lost from ecosystems and the regulation of this process may directly affect primary production and carbon cycling over short and long time scales. Previous investigations of the role of bioactive metals in regulating denitrification in bacteria from permanently ice-covered Lake Bonney in the Taylor Valley of East Antarctica indicated that denitrifying bacteria can be negatively affected by metals such as copper, iron, cadmium, lead, chromium, nickel, silver and zinc; and that there is a distinct difference in denitrifying activity between the east and west lobes of the lake. Low iron …

Collaborative Research: Extreme Discordance Between Allozyme And Non-Allozyme Introgression In Baltic Mussels. Selection On Allozymes?, Paul D. Rawson

University of Maine Office of Research Administration: Grant Reports

A major challenge for evolutionary biologists is to determine the degree to which natural selection shapes genetic variation in natural populations. Hybridization is common between two species of blue mussel found in the North and Baltic Seas. The differential exchange of genes between the two mussel species, particularly genes encoding enzymes involved in central metabolic pathways, suggests those genes may be under selection and involved in adaptation to low salinity conditions in the Baltic Sea. Tests for selection will be conducted by comparing levels of genetic exchange for these metabolic genes against nonmetabolic and presumably neutral (i.e., not under selection) …

The Lobster Bulletin, Winter 2008, Lobster Institute, University Of Maine

Lobster Bulletin

The Lobster Bulletin newsletter includes research updates, and information on lobsters and the lobster industry. The Lobster Institute at the University of Maine is dedicated to protecting and conserving the lobster resource, and enhancing lobstering as an industry and a way of life.

Headlines in the Winter 2008 issue include:

• Over $4 Million for Lobster Research in Canada
• Woodward Preserves a Piece of Lobster Industry History
• Town Meeting Celebrates 5^th Year
• 2007 Friends of the Lobster Institute
• Research Report: Lobster Enhancement Efforts Discussed
• Research Report: Coral Reef Crisis Could Signal Treat to Local Marine Life and Fisheries
• C.O.R.E. Campaign …

The Dandy Scroll, Winter 2008, University Of Maine Pulp And Paper Foundation

General University of Maine Publications

The Winter 2008 issue of The Dandy Scroll newsletter produced by the University of Maine Pulp and Paper Foundation.