Digital Commons Network^™

Spring Arrives At The Unh Greenhouse, Unh Communications And Public Affairs

UNH Today Archive

No abstract provided.

Phragmites Australis Management In The United States: 40 Years Of Methods And Outcomes, Eric L. G. Hazelton, Thomas J. Mozdzer, David M. Burdick, Karin M. Kettenring, Dennis F. Whigham

Jackson Estuarine Laboratory

Studies on invasive plant management are often short in duration and limited in the methods tested, and lack an adequate description of plant communities that replace the invader following removal. Here we present a comprehensive review of management studies on a single species, in an effort to elucidate future directions for research in invasive plant management. We reviewed the literature on Phragmites management in North America in an effort to synthesize our understanding of management efforts, identify gaps in knowledge and improve the efficacy of management. Additionally, we assessed recent ecological findings concerning Phragmites mechanisms of invasion and integrated these …

Research Makes A Difference, Rebecca Zeiber

UNH Today Archive

No abstract provided.

Draft Genome Sequence Of Photorhabdus Luminescens Strain Ba1, An Entomopathogenic Bacterium Isolated From Nematodes Found In Egypt, Shimaa M. Ghazal, Sheldon G. Hurst Iv, Krystalynne Morris, Feseha Abebe-Akele, W. Kelley Thomas, Usama M. Badr, Mona A. Hussein, Mohamed A. Abouzaied, Kamal M. Khalil, Louis S. Tisa

Molecular, Cellular & Biomedical Sciences

Photorhabdus luminescens strain BA1 is an entomopathogenic bacterium that forms a symbiotic association with Heterorhabditis nematodes. We report here a 5.0-Mbp draft genome sequence for P. luminscens strain BA1, with a G+C content of 42.46% and 4,250 candidate protein-coding genes.

Mechanisms Of Soil Carbon Accrual And Storage In Bioenergy Cropping Systems, Lisa K. Tiemann, A. Stuart Grandy

Faculty Publications

Annual row cropping systems converted to perennial bioenergy crops tend to accrue soil C, likely a function of increased root production and decreased frequency of tillage; however, very little is known about the mechanisms governing the accrual and stability of this additional soil C. To address this uncertainty, we assessed the formation and stability of aggregates and soil organic C (SOC) pools under switchgrass, giant miscanthus, a native perennial grass mix and continuous corn treatments in Michigan and Wisconsin soils differing in both texture and mineralogy. We isolated different aggregate size fractions, >2 mm, 0.5–2 mm, and <0.5 mm, using a procedure intended to minimize alterations to aggregate biological and chemical properties. We determined SOC, permanganate oxidizable C (POXC), and microbial activities (i.e. enzyme activities and soil respiration rates) associated with these aggregates. Soil type strongly influenced the trajectory of aggregate formation and stabilization with differences between sites in mean aggregate size, stability, SOC and microbial activity under perennial vs. corn cropping systems. At the Michigan site, soil microbial activities were highest in the >2 mm aggregates, …

The New Hampshire, Vol. 103 [104], No. 31 (Feb. 21, 2014), The New Hampshire

The New Hampshire Print Edition

An independent student produced newspaper from the University of New Hampshire. This volume was printed as 103, but it is the 104th volume in the series. This was corrected in pencil.

Luna Tunes, Unh Communications And Public Affairs

UNH Today Archive

No abstract provided.

Luna Tunes, Unh Communications And Public Affairs

UNH Today Archive

No abstract provided.

The New Hampshire, Vol. 103 [104], No. 30 (Feb. 18, 2014), The New Hampshire

The New Hampshire Print Edition

An independent student produced newspaper from the University of New Hampshire. This volume was printed as 103, but it is the 104th volume in the series. This was corrected in pencil.

Joint Report Of Peer Review Panel For Numeric Nutrient Criteria For The Great Bay Estuary New Hampshire Department Of Environmental Services June, 2009, Victor J. Bierman, Robert J. Diaz, W. Judson Kenworthy, Kenneth H. Reckhow

Additional Regional Technical Reports & Resources

This peer review was authorized through a collaborative agreement sponsored by the New Hampshire Department of Environmental Services (DES) and the Cities of Dover, Rochester and Portsmouth, New Hampshire. The purpose was to conduct an independent scientific peer review of the document entitled, “Numeric Nutrient Criteria for the Great Bay Estuary,” dated June, 2009 (DES 2009 Report).

A Noninvasive Method For In Situ Determination Of Mating Success In Female American Lobsters (Homarus Americanus), Winsor H. Watson Iii, Tracy L. Pugh, Jason S. Goldstein, Elizabeth A. Dubofsky

Jackson Estuarine Laboratory

Despite being one of the most productive fisheries in the Northwest Atlantic, much remains unknown about the natural reproductive dynamics of American lobsters. Recent work in exploited crustacean populations (crabs and lobsters) suggests that there are circumstances where mature females are unable to achieve their full reproductive potential due to sperm limitation. To examine this possibility in different regions of the American lobster fishery, a reliable and noninvasive method was developed for sampling large numbers of female lobsters at sea. This method involves inserting a blunt-tipped needle into the female's seminal receptacle to determine the presence or absence of a …

The New Hampshire, Vol. 103 [104], No. 27 (Feb. 7, 2014), The New Hampshire

The New Hampshire Print Edition

An independent student produced newspaper from the University of New Hampshire. This volume was printed as 103, but it is the 104th volume in the series. This was corrected in pencil.

Scaling-Up: A Fifth Year Of Restoring Oyster Reefs In Great Bay Estuary, Nh 2013 Annual Program Report, Ray Konisky, Raymond E. Grizzle, Krystin M. Ward, R. Eckerd, Kara Mcketon

PREP Reports & Publications

The eastern oyster (Crassostrea virginica) in New Hampshire’s Great Bay Estuary has declined in the past decades, with local populations reduced due primarily to disease, excessive siltation, and past over-harvest. The loss of filtering oysters results in diminished ecological benefits for water quality, nitrogen control, and other services that healthy oyster populations provide. In support of management objectives to restore oyster populations, The Nature Conservancy (TNC) and the University of New Hampshire (UNH) have combined for a fifth consecutive year of scaled-up methods to rebuild oyster reefs and populations. Since 2009, we have “planted” seasoned shell, primarily surf-clam …

The View From The Coast, Susan Dumais

UNH Today Archive

No abstract provided.

The New Hampshire, Vol. 103 [104], No. 26 (Feb. 4, 2014), The New Hampshire

The New Hampshire Print Edition

An independent student produced newspaper from the University of New Hampshire. This volume was printed as 103, but it is the 104th volume in the series. This was corrected in pencil.

On A Roll, Suki Casanave

UNH Today Archive

No abstract provided.

Ancient Buzz, Unh Communications And Public Affairs

UNH Today Archive

No abstract provided.

Ocean Interconnections, Unh Communications And Public Affairs

UNH Today Archive

No abstract provided.

Radiation Modeling In The Earth And Mars Atmospheres Using Lro/Crater With The Emmrem Module, Colin J. Joyce, Nathan A. Schwadron, Jody K. Wilson, Harlan E. Spence, Justin Kasper, Michael J. Golightly, J. B. Blake, Lawrence W. Townsend, Anthony Case, E. Semones, Sonya S. Smith, Cary Zeitlin

Physics & Astronomy

Abstract

We expand upon the efforts of Joyce et al. (2013), who computed the modulation potential at the Moon using measurements from the Cosmic Ray Telescope for the Effects of Radiation (CRaTER) instrument on the Lunar Reconnaissance Orbiter (LRO) spacecraft along with data products from the Earth-Moon-Mars Radiation Environment Module (EMMREM). Using the computed modulation potential, we calculate galactic cosmic ray (GCR) dose and dose equivalent rates in the Earth and Mars atmospheres for various altitudes over the course of the LRO mission. While we cannot validate these predictions by directly comparable measurement, we find that our results conform to …

Mechanistic Target Of Rapamycin (Mtor) Signaling Genes In Decapod Crustaceans: Cloning And Tissue Expression Of Mtor, Akt, Rheb, And S6 Kinase In The Green Crab, Carcinus Maenas, And Blackback Land Crab, Gecarcinus Lateralis, Ali M. Abuhagr, Kyle S. Maclea, Ernest S. Chang, Donald L. Mykles

Life Sciences Faculty Scholarship

Mechanistic target of rapamycin (mTOR) controls global translation of mRNA into protein by phosphorylating p70 S6 kinase (S6K) and eIF4E-binding protein-1. Akt and Rheb, a GTP-binding protein, regulate mTOR protein kinase activity. Molting in crustaceans is regulated by ecdysteroids synthesized by a pair of molting glands, or Y-organs (YOs), located in the cephalothorax. During premolt, the YOs hypertrophy and increase production of ecdysteroids. Rapamycin (1 μM) inhibited ecdysteroid secretion in Carcinus maenas and Gecarcinus lateralis YOs in vitro, indicating that ecdysteroidogenesis requires mTOR-dependent protein synthesis. The effects of molting on the expression of four key mTOR signaling genes (mTOR, Akt, …

Macrosystems Ecology: Understanding Ecological Patterns And Processes At Continental Scales, James B. Heffernan, Patricia A. Soranno, Michael J. Angilletta Jr., Lauren B. Buckley, Daniel S. Gruner, Tim H. Keitt, James R. Kellner, John S. Kominoski, Adrian V. Rocha, Jingfeng Xiao, Tamara K. Harms, Simon J. Goring, Lauren E. Koenig, William H. Mcdowell, Heather Powell, Andrew D. Richardson, Craig A. Stow, Rodrigo Vargas, Kathleen C. Weathers

All Materials

Macrosystems ecology is the study of diverse ecological phenomena at the scale of regions to continents and their interactions with phenomena at other scales. This emerging subdiscipline addresses ecological questions and environmental problems at these broad scales. Here, we describe this new field, show how it relates to modern ecological study, and highlight opportunities that stem from taking a macrosystems perspective. We present a hierarchical framework for investigating macrosystems at any level of ecological organization and in relation to broader and finer scales. Building on well-established theory and concepts from other subdisciplines of ecology, we identify feedbacks, linkages among distant …

2013 Unh/Noaa Joint Hydrographic Center Performance And Progress Report, Larry A. Mayer, Noaa-Unh Joint Hydrographic Center (Jhc/Ccom)

Progress Reports

Report Period: 01/01/2013 – 12/31/2013

Effects Of Red-Backed Salamanders On Ecosystem Functions, Daniel J. Hocking, Kimberly J. Babbitt

New Hampshire Agricultural Experiment Station Publications

Ecosystems provide a vast array of services for human societies, but understanding how various organisms contribute to the functions that maintain these services remains an important ecological challenge. Predators can affect ecosystem functions through a combination of top-down trophic cascades and bottom-up effects on nutrient dynamics. As the most abundant vertebrate predator in many eastern US forests, woodland salamanders (Plethodon spp.) likely affect ecosystems functions. We examined the effects of red-backed salamanders (Plethodon cinereus) on a variety of forest ecosystem functions using a combined approach of large-scale salamander removals (314-m2 plots) and small-scale enclosures (2 m2) where we explicitly manipulated …

Amanda Chisolm ’16, Unh Communications And Public Affairs

UNH Today Archive

No abstract provided.

Pre-Med, With Feeling, Beth Potier

UNH Today Archive

No abstract provided.

Energy Input Is Primary Controller Of Methane Bubbling In Subarctic Lakes, Martin Wik, Brett F. Thornton, David Bastviken, Sally Macintyre, Ruth K. Varner, Patrick M. Crill

Faculty Publications

Emission of methane (CH4) from surface waters is often dominated by ebullition (bubbling), a transport mode with high‐spatiotemporal variability. Based on new and extensive CH4 ebullition data, we demonstrate striking correlations (r2 between 0.92 and 0.997) when comparing seasonal bubble CH4 flux from three shallow subarctic lakes to four readily measurable proxies of incoming energy flux and daily flux magnitudes to surface sediment temperature (r2 between 0.86 and 0.94). Our results after continuous multiyear sampling suggest that CH4 ebullition is a predictable process, and that heat flux into the lakes is the dominant driver of gas production and release. Future …

Effects Of Invasive Winter Moth Defoliation On Tree Radial Growth In Eastern Massachusetts, Usa., Michael J. Simmons, Thomas D. Lee, Mark J. Ducey, Joseph S. Elkinton, George H. Boettner, Kevin J. Dodds

Natural Resources & the Environment

Abstract

Winter moth, Operophtera brumata L. (Lepidoptera: Geometridae), has been defoliating hardwood trees in eastern Massachusetts since the 1990s. Native to Europe, winter moth has also been detected in Rhode Island, Connecticut, eastern Long Island (NY), New Hampshire, and Maine. Individual tree impacts of winter moth defoliation in New England are currently unknown. Using dendroecological techniques, this study related annual radial growth of individual host (Quercus spp. and Acer spp.) trees to detailed defoliation estimates. Winter moth defoliation was associated with up to a 47% reduction in annual radial growth of Quercus trees. Latewood production of Quercus was reduced by …

Town Of Merrimack, Nh 2013 Annual Report., Merrimack Town Representatives

Merrimack, NH Annual Reports

This is an annual report containing vital statistics for a town/city in the state of New Hampshire.

Annual Reports Of The Officers, Trustees, Agents, Committees, And Organizations Of The Town Of Plaistow, New Hampshire For The Year 2013., Plaistow Town Representatives

Plaistow, NH Annual Reports

This is an annual report containing vital statistics for a town/city in the state of New Hampshire.

Annual Reports Of The Officers, Trustees, Agents, Committees, And Organizations Of The Town Of Windham, New Hampshire For The Year 2013., Windham Town Representatives

Windham, NH Annual Reports

This is an annual report containing vital statistics for a town/city in the state of New Hampshire.