Forest Sciences Commons^™

Macroinvertebrates, Mitchell J. Kukla, Corey Kuminecz, Margaret E. Maloney, Joseph Murphy, Taylor M. Buskey, Jenea I. Adams, Michelle N. Little, Eric B. Borth, Taylor M. Sparbanie, Sean D. Mahoney, Kevin W. Custer, Julia I. Chapman, Ryan W. Mcewan

Data Files

No abstract provided.

Conventional Method Comparison Data (Ves And Hess), Margaret E. Maloney, Eric B. Borth, Julia I. Chapman, Ryan W. Mcewan

Data Files

No abstract provided.

Herbaceous Vegetation: June, Julia I. Chapman, Margaret E. Maloney, Erin C. Rowekamp, Mitchell J. Kukla, Sean D. Mahoney, Eric B. Borth, Ryan W. Mcewan

Data Files

June

Lonicera Maackii Leaf Feeding Tests: Survival, Growth, Loss Of Leaf Mass, Kevin W. Custer, Julia I. Chapman, Ryan W. Mcewan

Data Files

Lymnaea stagnalis, Hyalella Azteca, and Allocapnia spp.

Lonicera Maackii Leaf Leachate Toxicity: Physicochemical Data, Eric B. Borth, Kevin W. Custer, Julia I. Chapman, Ryan W. Mcewan

Data Files

Lymnaea stagnalis and Hyalella azteca

A Comparison Of Two Methods Of Quantifying Mating Success In Low Density Gypsy Moth (Lymantria Dispar) Populations, Alexandra Barry, Hannah Byrne, Derek M. Johnson

UROP Posters

The gypsy moth (Lymantria dispar) is a defoliating pest native to Europe and invasive to North America. The gypsy moth is subject to depressed mating success in low density populations, which may restrict spread of the forest pest. Research focusing on gypsy moth density as it relates to mating behavior has often used counts of males caught in pheromone-baited delta traps as a proxy to estimate the probability of female mating success. The purpose of this project was to determine whether pheromone trap counts provide accurate estimates of female mating success probability, by comparing data gathered from pheromone-baited …

Knowledge And Practices On Family Development Of 4ps Beneficiaries In Camarines Sur, Philippines, Stanley O. Dy

Journal of Public Affairs and Development

The study assessed the knowledge and practices on family development among the 4Ps beneficiaries in Camarines Sur. Research methods employed were survey, KIIs, and review of secondary data. The data gathered from the 169 randomly selected respondents were analyzed through descriptive statistics, particularly frequency, percentage, and mean. Most topics discussed during family development sessions relate to disaster risk reduction and management, according to 27% of the respondents. Other topics were on fire, gardening, barangay improvement, community, and nutrition. Almost all respondents indicated that the family development sessions (e.g., proper parenting) are effective, relevant, interesting, and are easy to apply. They …

Dendroclimatic Analysis Of White Pine (Pinus Strobus L.) Using Long-Term Provenance Test Sites Across Eastern North America, Sophan Chhin, Ronald S. Zalesny Jr, William C. Parker, John Brissette

Faculty & Staff Scholarship

Background: The main objective of this study was to examine the climatic sensitivity of the radial growth response of 13 eastern white pine (Pinus strobus L.) provenances planted at seven test sites throughout the northern part of the species’ native distribution in eastern North America.

Methods: The test sites (i.e., Wabeno, Wisconsin, USA; Manistique, Michigan, USA; Pine River, Michigan, USA; Newaygo, Michigan, USA; Turkey Point, Ontario, Canada; Ganaraska, Ontario, Canada; and Orono, Maine, USA) examined in this study were part of a range-wide white pine provenance trial established in the early 1960s in the eastern United States and Canada. Principal …

Recycling Wood Waste From Construction And Demolition To Produce Particleboards, Rafael Rosa Azambuja, Vincius Gomes Castro, Rosilani Trianoski, Setsuo Iwakiri

Faculty & Staff Scholarship

The objective of this study was to evaluate the feasibility of construction and demolition (C&D) waste wood to produce of particleboard. The raw material was obtained from a waste recycling company and it was divided into four types of materials: MDF (medium density fiberboard), MDP (medium density particleboard), plywood and timber. After reduction of these wood product residues to particles, particleboards were produced, in the UFPR Laboratory, with urea-formaldehyde resin and a target density of 0,75 g / cm3 and their physical and mechanical properties were determined. Particleboards made from industrial Pinus spp. particles were also produced as control samples. …

Phosphorus Limitation Of Aboveground Production In Northern Hardwood Forests, Shinjini Goswami, Melany C. Fisk, Matthew A. Vadeboncoeur, Mariann Garrison-Johnston, Ruth D. Yanai, Timothy J. Fahey

All Materials

Forest productivity on glacially derived soils with weatherable phosphorus (P) is expected to be limited by nitrogen (N), according to theories of long-term ecosystem development. However, recent studies and model simulations based on resource optimization theory indicate that productivity can be co-limited by N and P. We conducted a full factorial N × P fertilization experiment in 13 northern hardwood forest stands of three age classes in central New Hampshire, USA, to test the hypothesis that forest productivity is co-limited by N and P. We also asked whether the response of productivity to N and P addition differs among species …

Carbon Fluxes And Interannual Drivers In A Temperate Forest Ecosystem Assessed Through Comparison Of Top-Down And Bottom-Up Approaches, Andrew P. Ouimette, Scott V. Ollinger, Andrew D. Richardson, David Y. Hollinger, Trevor F. Keenan, Lucie C. Lepine, Matthew A. Vadeboncoeur

All Materials

Despite decades of research, gaining a comprehensive understanding of carbon (C) cycling in forests remains a considerable challenge. Uncertainties stem from persistent methodological limitations and the difficulty of resolving top-down estimates of ecosystem C exchange with bottom-up measurements of individual pools and fluxes. To address this, we derived estimates and associated uncertainties of ecosystem C fluxes for a 100-125 year old mixed temperate forest stand at the Bartlett Experimental Forest, New Hampshire, USA, using three different approaches: (1) tower-based eddy covariance, (2) a biometric approach involving C flux measurements of individual ecosystem subcomponents, and (3) an inventory approach involving changes …

Hydrological Niche Segregation Defines Forest Structure And Drought Tolerance Strategies In A Seasonal Amazon Forest, Mauro Brum, Matthew A. Vadeboncoeur, Valeriy Ivanov, Heidi Asbjornsen, Scott Saleska, Luciana F. Alves, Deliane Pinha, Jadson D. Dias, Luiz E O C Aragão, Fernanda Barros, Paulo Bittencourt, Luciano Pereira, Rafael S. Oliveira

All Materials

1. The relationship between rooting depth and above‐ground hydraulic traits can potentially define drought resistance strategies that are important in determining species distribution and coexistence in seasonal tropical forests, and understanding this is important for predicting the effects of future climate change in these ecosystems.
2. We assessed the rooting depth of 12 dominant tree species (representing c. 42% of the forest basal area) in a seasonal Amazon forest using the stable isotope ratios (δ¹⁸O and δ²H) of water collected from tree xylem and soils from a range of depths. We took advantage of a major ENSO‐related …

Great Basin Forb Restoration: Lupine Response To Altered Precipitation Predicted By Climate Change, Andrea Jo Johnson, Kristin Hulvey, Scott Jensen, Tom Monaco

Research on Capitol Hill

Abundance of native forb species is declining, leading to degraded ecosystems within the Great Basin.

Forbs provide many ecosystem functions, including wildlife habitat for species such as Sage Grouse, increased biodiversity, resistance to erosion, and protection from invasive plant species.

Climate change is predicted to affect timing, frequency, and intensity of precipitation within the Great Basin. During the fall season, precipitation is expected to increase by 30%.

Changes in precipitation will likely affect fall emergence of forbs, which is essential for overwintering and establishment.

Learning how precipitation affects forb emergence could lead to new methods that increase fall emergence and …

Within-Fire Patchiness Associated With Prescribed Burning In The Northern Jarrah Forests Of Western Australia, Zigourney Nielsen

Theses: Doctorates and Masters

There is growing understanding of the importance of landscape mosaics and heterogeneity for biodiversity outcomes in Western Australia. However, there is limited information on the patchiness (spatial configuration of unburnt and burnt patches which occur at a range of spatial scales) within the perimeter of a single prescribed burn. Of particular concern is the idea that prescribed burning operations, carried out under very restricted weather and environmental conditions, can lead to structural and floristic homogenization of the area within a burn perimeter. This may be evident as reduced post-fire vegetation patchiness. Western Australian Jarrah (Eucalyptus marginata) forests are managed to …

Game Of Tones: Sugars, Organic Acids, And Phenolics In Green And Purple Asparagus (Asparagus Officinalis L.) Cultivars, Ana Slatnar, Maja Mikulic Petkovsek, Franci Stampar, Robert Veberic, Jasmina Horvat, Marijana Jakse, Helena Sircelj

Turkish Journal of Agriculture and Forestry

The content of selected compounds was compared among different spear sections (the tip, the middle, and the base) of green (Ariane F1, Dariana F1, Darsiane F1, Mondeo F1, Primaverde F1, and Viridis F1) and purple (Burgundine F1 and Pacific Purple F1) asparagus cultivars. Sugars, organic acids, anthocyanins, flavonols, flavones, and hydroxycinnamic acids were determined by HPLC. No significant differences in the content of organic acids, sugars, and hydroxycinnamic acids were detected among cultivars. However, purple cultivars contained the highest levels of anthocyanins. The content of flavonols, flavones, hydroxycinnamic acids, and total phenols were not color-dependent. High flavonol content was characteristic …

Variation In Secondary Metabolites Contents Of Spinoso Sardo Artichoke (Cynara Cardunculus L.) Under Different Day Lengths, Angela Fadda, Adriana Virdis, Antonio Barberis, Sara Melito

Turkish Journal of Agriculture and Forestry

Globe artichoke (Cynara cardunculus L. var. scolymus Fiori) is an economically important crop in the Mediterranean basin and particularly in Italy, which is a leading producer. In this research, we studied the effect of extended photoperiod (15 and 17 h) on polyphenolic, flavonoids, lignin concentrations, and antioxidant activity in edible and inedible organs of artichoke. The influence of day length on morphological traits and biomass accumulation was also assessed. The total phenolic content of whole plants grown under natural day length conditions exceeds that of photoperiod extended for 15 and 17 h by 31% and 32.4%, respectively. The decrease of …

Large Effect Quantitative Trait Loci For Salicinoid Phenolic Glycosides In Populus: Implications For Gene Discovery, Scott A. Woolbright, Brian J. Rehill, Richard L. Lindroth

Aspen Bibliography

Genomic studies have been used to identify genes underlying many important plant secondary metabolic pathways. However, genes for salicinoid phenolic glycosides (SPGs)—ecologically important compounds with significant commercial, cultural, and medicinal applications—remain largely undescribed. We used a linkage map derived from a full‐sib population of hybrid cottonwoods (Populus spp.) to search for quantitative trait loci (QTL) for the SPGs salicortin and HCH‐salicortin. SSR markers and primer sequences were used to anchor the map to the V3.0 P. trichocarpa genome. We discovered 21 QTL for the two traits, including a major QTL for HCH‐salicortin (R2 = .52) that colocated …

The Impact Of Reconstructed Soils Following Oil Sands Exploitation On Aspen And Its Associated Belowground Microbiome, Franck Stefani, Nathalie Isabel, Marie-Josee Morency

Aspen Bibliography

Oil sands surface mining in the Athabasca region of northern Alberta (Canada) is a significant anthropogenic disturbance that resets boreal forest development and succession to early stages. During surface mining, the vegetation is cleared, the topsoil is salvaged, and the overburden (the layer of sand and clay in between the topsoil and the oil sands) is piled (see Fig. 2 in Audet et al.1 for an explanation of the land-reclamation procedure). After mining is finished, the landforms (composed of overburden and tailings sand) are capped with organic matter-rich soil covers made of either upland-derived forest floor-mineral mix (FFMM) or a …

Hart Prairie Preserve Site Visit To Assess Aspen Health Nature Conservancy, Flagstaff, Az, Amanda Grady

Aspen Bibliography

On June 11, 2018, Amanda Grady, Entomologist, Arizona Zone, Forest Health Protection, performed a site visit to evaluate aspen health on the Nature Conservancy lands at Heart Prairie Preserve (HPP) near Flagstaff. Specifically, the evaluation was to determine whether or not the aspen within exclosures on Fern Mountain have symptoms or signs of Oystershell scale (OSS), an emergent forest pest contributing to aspen decline in northern Arizona.

Effects Of Climate Change On Forest Vegetation In The Northern Rockies Region, Robert E. Keane, Mary Frances Mahalovich

Aspen Bibliography

No abstract provided.