Treesearch
Displaying 7,501 - 7,510 of 65,188 Publications- Douglas-fir beetle, Dendroctonus pseudotsugae Hopkins (DFB), is the most damaging insect pest of Douglas-fir, Pseudotsuga menziesii (Mirb.) Franco, in western North America. Individual high-value trees and stands can be protected during DFB outbreaks using the beetle's anti-aggregation pheromone, 3-methylcyclohex-2-en-1-one (MCH), which is available in several commercial formulations. However, other methylcyclohexanones similar in molecular structure to MCH have been shown to repel bees from agricultural areas. In forest systems, wild bees (Hymenoptera: Apiformes) provide essential...AuthorsGabriel Foote, Justin B. Runyon, Christopher J. Fettig, Nathaniel Foote, Darrell W. RossKeywordsSourceJournal of Economic Entomology. 114: 2121-2126.Year2021
- Leptographium terebrantis has been implicated as a contributing factor of P. taeda decline and mortality over the past several decades. We examined the potential of L. terebrantis to cause decline symptoms and determined the relationship between pathogen spread and the formation of new sapwood. The study was undertaken in a 13-y-old P. taeda plantation using artificial inoculations of fungal-colonized, sterilized toothpicks. We found that L. terebrantis was not only re-isolated from dying inoculated trees but caused decline symptomology and mortality at a high inoculum density. It was...AuthorsJohn K. Mensah, Mary Anne Sword Sayer, Ryan L. Nadel, George Matusick, Zhaofei Fan, Emily Carter, Lori G. EckhardtSourceFungal EcologyYear2021
- Smoke impacts from large wildfires are mounting, and the projection is for more such events in the future as the one experienced October 2017 in Northern California, and subsequently in 2018 and 2020. Further, the evidence is growing about the health impacts from these events which are also difficult to simulate. Therefore, we simulated air quality conditions using a suite of remotely-sensed data, surface observational data, chemical transport modeling with WRF-CMAQ, one data fusion, and three machine learning methods to arrive at datasets useful to air quality and health impact analyses....AuthorsSusan O'Neill, Minghui Diao, Sean Raffuse, Mohammad Al-Hamdan, Muhammad Barik, Yiqin Jia, Steve Reid, Yufei Zou, Daniel Tong, J. Jason West, Joseph Wilkins, Amy Marsha, Frank Freedman, Jason Vargo, Sim Larkin, Ernesto Alvarado, Patti LoescheKeywordsSourceJournal of the Air & Waste Management Association. 71(7): 791-814.Year2021
- Cover crops planted in the offseason are subjected to uncontrollable weather variables that limit agro-ecological services through modifications in growth and development. The growth of five cover crop species was investigated in response to an array of day/night temperatures, 17/9, 22/14, 27/19, 32/24, and 37/29 °C. Shoot and root parameters were measured 33 d after planting. Quadratic functions best described most of the root and shoot dynamics in response to increasing temperatures except for a linear response of plant height in crimson clover (Trifolium incarnatum) and mustard (Brassica...AuthorsJay Munyon, Raju Bheemanahalli, Charles Hunt Walne, K. Raja. ReddyKeywordsSourceAgronomy Journal. 113(2): 1333-1348.Year2021
- Plant transpiration links physiological responses of vegetation to water supply and demand with hydrological, energy, and carbon budgets at the land-atmosphere interface. However, despite being the main land evaporative flux at the global scale, transpiration and its response to environmental drivers are currently not well constrained by observations. Here we introduce the first global compilation of whole-plant transpiration data from sap flow measurements (SAPFLUXNET, https://sapfluxnet.creaf.cat/, last access: 8 June 2021). We harmonized and quality-controlled individual datasets...AuthorsRafael Poyatos, Victor Granda, Victor Flo, Mark A. Adams, Balazs Adorjan, David Aguade, Marcos P. M. Aidar, Scott Allen, M. Susana Alvarado-Barrientos, Kristina J. Anderson-Teixeira, Luiza Maria Aparecido, M. Altaf Arain, ismael Aranda, Heidi Asbjornsen, Robert Baxter, Eric Beamesderfer, Z. Carter Berry, Daniel Berveiller, Bethany Blakely, Johnny Boggs, Gil Bohrer, Paul V Bolstad, Damien Bonal, Rosvel Bracho, Patricia Brito, Jason Brodeur, Fernando Casanoves, Jerome Chave, Hui Chen, Cesar Cisneros, Ken Clark, Edoardo Cremonese, Hongzhong Dang, Jorge S. David, Teresa S. David, Nicolas Delpierre, Ankur R. Desai, Frederic C. Do, Michal Dohnal, Jean-Christophe Domec, Sebinasi Dzikiti, Colin Edgar, Rebekka Eichstaedt, Tarek S. El-Madany, Jan Elbers, Cleiton B. Eller, Eugenie S. Euskirchen, Brent Ewers, Patrick Fonti, Alicia Forner, et al., Andrew C. Oishi, al. et, Ge Sun, al et.KeywordsSourceEarth System Science DataYear2021
- Wood extractives, solvent-soluble fractions of woody biomass, are considered to be a factor impeding or excluding fungal colonization on the freshly harvested conifers. Among wood decay fungi, the basidiomycete Phlebiopsis gigantea has evolved a unique enzyme system to efciently transform or degrade conifer extractives but little is known about the mechanism(s). In this study, to clarify the mechanism(s) of softwood degradation, we examined the transcriptome, proteome, and metabolome of P. gigantea when grown on defned media containing microcrystalline cellulose and pine sapwood extractives...AuthorsMana Iwata, Ana Gutiérrez, Gisela Marques, Grzegorz Sabat, Philip J. Kersten, Daniel Cullen, Jennifer M. Bhatnagar, Jagjit Yadav, Anna Lipzen, Yuko Yoshinaga, Aditi Sharma, Catherine Adam, Christopher Daum, Vivian Ng, Igor V Grigoriev, Chiaki HoriKeywordsSourceScientific ReportsYear2021
- Many terrestrial vertebrate species are exhibiting geographic distribution changes including poleward range limit shifts in response to increases in regional temperature. Bats are a highly mobile taxa capable of rapid responses to changes in abiotic or biotic conditions. In North America, recent extralimital records of the non-hibernating Lasiurus seminolus (Seminole bat) have been attributed to climate change, however such attributions remain speculative and potentially subject to sampling bias in the form of increased recent sampling efforts at latitudes north of the historical range. We...AuthorsMichael C. True, Roger W. Perry, William M. FordKeywordsSourceActa ChiropterologicaYear2021
- Eucalyptus is one of the fastest growing hardwoods for bioenergy production. Currently, few modeling tools exist to simultaneously estimate soil hydrological processes, nitrogen (N) uptake, and biomass production in a eucalyptus plantation. In this study, a STELLA (Structural Thinking and Experiential Learning Laboratory with Animation)-based model was developed to meet this need. After the model calibration and validation, a simulation scenario was developed to assess eucalyptus (E. grandis × urophylla) annual net primary production (ANPP), woody biomass production (WBP), water use...AuthorsYing Ouyang, Gary Feng, Heidi Renninger, Theodor D. Leininger, Prem Parajuli, Johnny M. GraceKeywordsSourceForestsYear2021
- Preparing cellulose II nanocrystals (CNC II) requires a polymorph transformation of natural cellulose I feedstocks. The transformation is usually achieved via a process such as mercerization or dissolution– regeneration. This study demonstrated a new method to prepare CNC II directly from bleached kraft pulp (BKP, a commercially available cellulose I feedstock) in a mildly acidic lithium bromide trihydrate (MALBTH) system, a concentrated (∼61 wt%) solution of LiBr in water with a very low concentration (2.5 mM) of sulfuric acid. First, the BKP was treated in the MALBTH system to generate a...AuthorsNing Li, Huiyang Bian, Junyong Zhu, Peter N. Ciesielski, Xuejun PanKeywordsSourceGreen ChemistryYear2021
- Carboxylated cellulose nanocrystals (CNCs) were produced from cotton linter using a mixture of a dicarboxylic acid (maleic acid or succinic acid) and its corresponding anhydride with or without catalyst in acetic acid as solvent. The low solubilities of these dicarboxylic acids can ease chemical recovery and decrease environmental impact (especailly maleic acid is a U.S. FDA approved indirect food additive (21CFR175-177)) and capital costs compared with the conventional concentrated sulfuric acid hydrolysis for producing CNCs. The dicarboxylicacid-produced CNCs (DC-CNCs) contained surface...AuthorsChunxiang Lin, Beiqiu Chen, Yushi Liu, Yiting Chen, Minghua Liu, Junyong ZhuSourceCarbohydrate PolymersYear2021