Digital Commons Network^™

Planning For Prescribed Burning In New Hampshire: Minimum Recommended Standards For Planning & Implementing Prescribed Burns, Cooperative Extension

UNH Cooperative Extension

No abstract provided.

Vernal Pool Conservation: Enhancing Existing Regulation Through The Creation Of The Maine Vernal Pool Special Area Management Plan, Vanessa R. Levesque, Aram J. K. Calhoun, Elizabeth Hertz

Faculty Publications

Conservation of natural resources is challenging given the competing economic and ecological goals humans have for landscapes. Vernal pools in the northeastern US are seasonal, small wetlands that provide critical breeding habitat for amphibians and invertebrates adapted to temporary waters, and are exceptionally hard to conserve as their function is dependent on connections to other wetlands and upland forests. A team of researchers in Maine joined forces with a diverse array of governmental and private stakeholders to develop an alternative to existing top-down vernal pool regulation. Through creative adoption and revision of various resource management tools, they produced a vernal …

Meat: A Novel, Sergey Belyaev, Boris Pilnyak, Ronald D. Leblanc

Faculty Publications

An English-language translation of a Russian novel that appeared in the Soviet thick journal "Novyi Mir" in three installments during February, March, and April of 1936.

Clarifying The Interpretation Of Carbon Use Efficiency In Soil Through Methods Comparison, Kevin M. Geyer, Paul Dijkstra, Robert Sinsabaugh, Serita D. Frey

Faculty Publications

Accurate estimates of microbial carbon use efficiency (CUE) are required to predict how global change will impact microbially-mediated ecosystem functions such as organic matter decomposition. Multiple approaches are currently used to quantify CUE but the extent to which estimates reflect methodological variability is unknown. This limits our ability to apply or cross-compare published CUE values. Here we evaluated the performance of five methods in a single soil under standard conditions. The microbial response to three substrate amendment rates (0.0, 0.05, and 2.0 mg glucose-C g−1 soil) was examined using: 13C and 18O isotope tracing approaches which estimate CUE based on …

Bow Lake, Cooperative Extension

UNH Cooperative Extension

No abstract provided.

Depot Pond, Cooperative Extension

UNH Cooperative Extension

No abstract provided.

Northeast Pond, Cooperative Extension

UNH Cooperative Extension

No abstract provided.

Townhouse Pond, Cooperative Extension

UNH Cooperative Extension

No abstract provided.

Swains Lake, Cooperative Extension

UNH Cooperative Extension

No abstract provided.

Registration Open For 5th Live Free Or Die Writing Boot Camp, Kristen Melamed

UNH Today Archive

No abstract provided.

Dissertation Year Fellows Get To Work, Kristen Melamed

UNH Today Archive

No abstract provided.

The Apple Of Their Eye, Laura Chisholm

UNH Today Archive

No abstract provided.

Analysis Of Long-Term Productivity Monitoring And Foraging Area Identification Of Breeding Common Terns In Coastal New Hampshire, Jessica Marie Carloni

Master's Theses and Capstones

To restore New Hampshire tern populations, the Isles of Shoals Seabird Restoration Project was initiated in 1997 by New Hampshire Audubon and the New Hampshire Fish and Game Department, and is currently administered through a partnership between Shoals Marine Laboratory and New Hampshire Fish Game Department. This initial program was effective and substantial numbers of common terns and lower numbers of roseate and arctic terns have returned to nest on White and Seavey Islands. Analysis of long-term productivity monitoring over 17 years indicates recent stability in the colony with approximately 2,800 nesting pairs with an average productivity rate of 1.11 …

Population Genetics And Desiccation Stress Of Porphyra Umbilicalis Kützing In The Gulf Of Maine, Yuanyu Cao

Doctoral Dissertations

The red alga Porphyra umbilicalis Kützing is an ecologically and economically important marine macroalga in the Northern Atlantic. Porphyra umbilicalis has a broad distribution within the North Atlantic. In the Northeast Atlantic, it is dioecious and reproduces both sexually and asexually, while in the Northwest Atlantic only asexual reproduction has been observed. As a high intertidal alga, P. umbilicalis regularly experiences desiccation and rehydration cycles with the tidal cycles, so it has high tolerance towards various abiotic stresses. The present work attempts to understand the population structure in asexual populations of P. umbilicalis in the Gulf of Maine by applying …

Addressing The Nitrogen Challenge: Footprint Tools And On-Farm Solutions, Allison M. Leach

Doctoral Dissertations

Nitrogen management presents a unique dilemma: We must use nitrogen to grow our food and sustain life on earth, but excess reactive nitrogen that accumulates in the environment contributes to a cascade of negative impacts to human and ecosystem health. Addressing this nitrogen challenge will require a suite of solutions. This dissertation presents and explores three nitrogen management strategies: 1) The first ever integrated carbon and nitrogen footprint tool for campus sustainability management; 2) Exporting compost to improve a farm’s nitrogen efficiency; and 3) Methods for reducing gas emissions from aerated static pile heat recovery composting.

Nitrogen footprint tools connect …

Enhancing E. Coli Removal From Slow-Rate Biofilters Treating Low-Carbon Source Waters, Darline Simoni Balen

Master's Theses and Capstones

Optimizing ripening periods and maintaining removal efficiencies when treating high-quality source waters are some of the main challenges of slow-rate biofiltration. The ripening period of biofilters treating carbon-limited source waters can be significantly longer than biofilters treating nutrient-rich source waters, especially during colder temperatures. Abrupt changes in the influent water quality, e.g. surface water to groundwater, can also impact biofilter active biomass, and consequently biofilter performance. This study aimed to investigate how to reduce ripening period and improve removal efficiencies of slow-rate biofilters treating low-carbon waters by (i) increasing the organic carbon loading of the source water, and (ii) adding …

Impacts Of Sea-Level Rise And Thin-Layer Deposition On Salt Marsh Elevation Dynamics In New Hampshire, Andrew Payne

Master's Theses and Capstones

The survival of salt marshes depends largely on their ability to build in elevation, thereby preventing increases in flooding due to sea-level rise, but the rate of marsh elevation gain depends on processes that are not well-understood, i.e. belowground productivity, sedimentation, and subsidence. The application of sediment to the marsh surface (thin-layer deposition) is a potential mitigation tool for increased flooding, but its effects on plant growth and elevation gain are understudied, especially in New England marshes. A marsh organ experiment was constructed and installed in the field to examine the effects of tidal flooding and thin-layer deposition on productivity. …

Site-Specific And Landscape Features Associated With Shrubland Bird Occurence In Anthropogenic Shrublands In The Northeastern United States, Randy Shoe

Master's Theses and Capstones

Habitats dominated by low-growing trees and shrubs are becoming increasingly uncommon in the northeastern U.S. Human development, altered natural-disturbance regimes, and forest succession have reduced the quantity and quality of these shrublands. As a result, over half of the shrubland-dependent songbirds in the region have experienced long-term population declines. Anthropogenic shrublands, including regenerating clearcuts, sand and gravel mines, old fields, and transmission line rights-of-way may provide nesting habitat for most shrubland birds; but differences in size, site-specific features, and landscape composition may affect bird use. To assess the features that may influence shrubland bird occurrence in anthropogenic shrublands, I conducted …

Assessing The Impact Of Submerged Vegetation On Methane Dynamics In A Discontinuous Permafrost Lake System, Abisko, Sweden, Christopher Daniel Horruitiner

Master's Theses and Capstones

Across the Arctic, postglacial lakes contribute a substantial amount of the total atmospheric methane (CH4), and their emissions are predicted to increase. However, there is still much uncertainty as to the contribution of northern water bodies to atmospheric CH4 emissions. This is mainly due to the spatiotemporal variability of the predominant pathway of emission from high latitude lakes: ebullition (bubbling). There are a myriad of factors that affect ebullition fluxes, including solar radiation input and atmospheric pressure, which make it difficult to model the impact on regional emissions. Very few studies have correlated sediment characteristics and submerged vegetation density with …

The Impact Of Dams On Floods And Nitrogen Flux In The Lamprey River Watershed, Nh, David Simon

Master's Theses and Capstones

Decisions about dam management require weighing many tradeoffs. Among many other factors, dams and their reservoirs can reduce peak flows and retain nutrients that could otherwise cause downstream eutrophication. This study quantifies how dams and their management alter flows and nutrient retention within a coastal New Hampshire watershed. An annual nitrogen budget was estimated at Pawtuckaway Lake, a dammed reservoir within the Lamprey River watershed, through field work. Results showed that annual total dissolved nitrogen (TDN) and dissolved inorganic nitrogen (DIN) retention within Pawtuckaway Lake were close to estimates predicted by an empirical model developed by Seitzinger et al. 2002. …

The New Hampshire, Vol. 108 [109], No. 13 (Nov. 29, 2018), The New Hampshire

The New Hampshire Print Edition

An independent student produced newspaper from the University of New Hampshire. This volume was printed as 108, but it is the 109th volume in the series.

Dairy Farmers Of America Recognizes Unh Research Farms With Top Award, Lori Tyler Gula

Media Relations

No abstract provided.

Unh Professor Awarded The Honor Of 2018 Aaas Fellow, Robbin Ray

Media Relations

No abstract provided.

Aaas Honor, Robbin Ray

UNH Today Archive

No abstract provided.

Dynamic Duo, Beth Fornauf

UNH Today Archive

No abstract provided.

Pest And Nutrient Management In Caterpillar Tunnels, Lori Tyler Gula

UNH Today Archive

No abstract provided.

Reduced Carbon Use Efficiency And Increased Microbial Turnover With Soil Warming, Jianwei Li, Gangsheng Wang, Melanie A. Mayes, Steven D. Allison, Serita D. Frey, Zheng Shi, Xiao-Ming Hu, Yiqi Luo, Jerry M. Melillo

Faculty Publications

Global soil carbon (C) stocks are expected to decline with warming, and changes in microbial processes are key to this projection. However, warming responses of critical microbial parameters such as carbon use efficiency (CUE) and biomass turnover (rB) are not well understood. Here, we determine these parameters using a probabilistic inversion approach that integrates a microbial-enzyme model with 22 years of carbon cycling measurements at Harvard Forest. We find that increasing temperature reduces CUE but increases rB, and that two decades of soil warming increases the temperature sensitivities of CUE and rB. These temperature sensitivities, which are derived from decades-long …

A Multiscale Approach To Balance Trade-Offs Among Dam Infrastructure, River Restoration, And Cost, Samuel G. Roy, Emi Uchida, Simone P. De Souza, Ben Blachly, Emma Fox, Kevin H. Gardner, Arthur J. Gold, Jessica Jansujwicz, Sharon Klein, Bridie Mcgreavy, Weiwei Mo, Sean M. C. Smith, Emily Vogler, Karen Wilson, Joseph Zydlewski, David Hart

New Hampshire EPSCoR

Aging infrastructure and growing interests in river restoration have led to a substantial rise in dam removals in the United States. However, the decision to remove a dam involves many complex trade-offs. The benefits of dam removal for hazard reduction and ecological restoration are potentially offset by the loss of hydroelectricity production, water supply, and other important services. We use a multiobjective approach to examine a wide array of trade-offs and synergies involved with strategic dam removal at three spatial scales in New England. We find that increasing the scale of decision-making improves the efficiency of trade-offs among ecosystem services, …

Unh Plays Major Role In Identification Of First Asian Longhorned Tick In Nh, Sarah Schaier

UNH Today Archive

No abstract provided.

Mighty Microbes, Rebecca Irelan

UNH Today Archive

No abstract provided.