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https://www.readbyqxmd.com/read/27896307/data-on-birds-and-habitat-associated-with-forest-management-on-public-conservation-areas-in-the-mississippi-alluvial-valley
#1
Daniel J Twedt, R Randy Wilson
This data article contains data collected from 2006-2012 in forests located on 31 State or Federal conservation lands in or adjacent to the Mississippi Alluvial Valley. We present the location, treatment type, and silvicultural age of data collection locations. Presented data on bird detections and forest habitat were collected during avian point counts and associated forest habitat plots and linked to the publication (D.J. Twedt and R.R. Wilson, 2017) [5].
December 2016: Data in Brief
https://www.readbyqxmd.com/read/27764186/drivers-of-tree-growth-mortality-and-harvest-preferences-in-species-rich-plantations-for-smallholders-and-communities-in-the-tropics
#2
Huong Nguyen, Jerome Vanclay, John Herbohn, Jennifer Firn
There is growing interest in multi-species tropical plantations but little information exists to guide their design and silviculture. The Rainforestation Farming system is the oldest tropical polyculture planting system in the Philippines and provides a unique opportunity to understand the underlying processes affecting tree performance within diverse plantings. Data collected from 85 plots distributed across the 18 mixed-species plantations in the Philippines was used to identify the factors influencing growth, probability of harvest, and death of trees in these complex plantings...
2016: PloS One
https://www.readbyqxmd.com/read/27614911/determining-exhaust-fumes-exposure-in-chainsaw-operations
#3
F Neri, C Foderi, A Laschi, F Fabiano, M Cambi, G Sciarra, M C Aprea, A Cenni, E Marchi
The objective of this study was to investigate the inhalation exposure of forest operators to polycyclic aromatic hydrocarbons (PAHs) and BTEX (benzene, toluene, ethylbenzene and total xylenes) contained in the exhaust fumes released from chainsaws and to suggest possible countermeasures. The study was carried out in four silvicultural treatments (coppice clearcut, conifer thinning, conifer pruning, and sanitary cut), using three types of chainsaw fuel (normal two-stroke petrol mix and two alkylate fuels). Eighty personal air samples were collected; IOM samplers combined with Amberlite XAD-2 sorbent tubes were used for collecting PAHs and Radiello(®) samplers were used for BTEX...
November 2016: Environmental Pollution
https://www.readbyqxmd.com/read/27587430/paradigms-in-eastern-spruce-budworm-lepidoptera-tortricidae-population-ecology-a-century-of-debate
#4
Deepa S Pureswaran, Rob Johns, Stephen B Heard, Dan Quiring
Three main hypotheses have been postulated over the past century to explain the outbreaking population dynamics of eastern spruce budworm, Choristoneura fumiferana (Clemens). The Silviculture Hypothesis first arose in the 1920s, with the idea that outbreaks were driven by forestry practices favoring susceptible softwood species. In the 1960s, it was proposed that populations were governed by Multiple Equilibria, with warm weather conditions releasing low-density populations from the regulatory control of natural enemies...
September 1, 2016: Environmental Entomology
https://www.readbyqxmd.com/read/27575596/limber-pine-pinus-flexilis-james-a-flexible-generalist-of-forest-communities-in-the-intermountain-west
#5
Marcella A Windmuller-Campione, James N Long
As forest communities continue to experience interactions between climate change and shifting disturbance regimes, there is an increased need to link ecological understanding to applied management. Limber pine (Pinus flexilis James.), an understudied species of western North America, has been documented to dominate harsh environments and thought to be competitively excluded from mesic environments. An observational study was conducted using the Forest Inventory and Analysis Database (FIAD) to test the competitive exclusion hypothesis across a broad elevational and geographic area within the Intermountain West, USA...
2016: PloS One
https://www.readbyqxmd.com/read/27550217/genome-analysis-and-avirulence-gene-cloning-using-a-high-density-radseq-linkage-map-of-the-flax-rust-fungus-melampsora-lini
#6
Claire Anderson, Muhammad Adil Khan, Ann-Maree Catanzariti, Cameron A Jack, Adnane Nemri, Gregory J Lawrence, Narayana M Upadhyaya, Adrienne R Hardham, Jeffrey G Ellis, Peter N Dodds, David A Jones
BACKGROUND: Rust fungi are an important group of plant pathogens that cause devastating losses in agricultural, silvicultural and natural ecosystems. Plants can be protected from rust disease by resistance genes encoding receptors that trigger a highly effective defence response upon recognition of specific pathogen avirulence proteins. Identifying avirulence genes is crucial for understanding how virulence evolves in the field. RESULTS: To facilitate avirulence gene cloning in the flax rust fungus, Melampsora lini, we constructed a high-density genetic linkage map using single nucleotide polymorphisms detected in restriction site-associated DNA sequencing (RADseq) data...
2016: BMC Genomics
https://www.readbyqxmd.com/read/27384647/modeling-hematologic-and-biochemical-parameters-with-spatiotemporal-analysis-for-the-free-ranging-eastern-box-turtle-terrapene-carolina-carolina-in-illinois-and-tennessee-a-potential-biosentinel
#7
Terrell C Lloyd, Matthew C Allender, Grace Archer, Christopher A Phillips, John Byrd, A Russell Moore
Box turtles are long-lived, inhabit both aquatic and terrestrial habitats, and have relatively small home ranges making them a suitable candidate as a sentinel. To characterize their changes in response to environmental health, assessment of observed variation of this species is required. Thus, a comparative health assessment was employed in 825 Eastern box turtles in east central Illinois and Oak Ridge, Tennessee, to establish a baseline health assessment with regard to sex, age class, season, and location, identify temporal trends, and map parameters...
July 6, 2016: EcoHealth
https://www.readbyqxmd.com/read/27317969/transcriptional-regulation-of-vascular-cambium-activity-during-the-transition-from-juvenile-to-mature-stages-in-cunninghamia-lanceolata
#8
Huimin Xu, Dechang Cao, Jinling Feng, Hongyang Wu, Jinxing Lin, Yanwei Wang
Cunninghamia lanceolata (Lamb.) Hook., an evergreen conifer distributed in southern China, has been recognized as the most commercially important timber species due to its rapid growth. However, the molecular mechanisms underlying growth alternation due to vascular cambium activity are poorly understood. Here, we used cryosectioning to isolate the vascular cambium tissue of C. lanceolata at three stages, namely, juvenile, transition and mature (3-, 13-, and 35-year-old trees respectively) for transcriptome-wide analysis...
August 1, 2016: Journal of Plant Physiology
https://www.readbyqxmd.com/read/27317690/different-alleles-of-a-gene-encoding-leucoanthocyanidin-reductase-palar3-influence-resistance-against-the-fungus-heterobasidion-parviporum-in-picea-abies
#9
Miguel Nemesio-Gorriz, Almuth Hammerbacher, Katarina Ihrmark, Thomas Källman, Åke Olson, Martin Lascoux, Jan Stenlid, Jonathan Gershenzon, Malin Elfstrand
Despite the fact that fungal diseases are a growing menace for conifers in modern silviculture, only a very limited number of molecular markers for pathogen resistance have been validated in conifer species. A previous genetic study indicated that the resistance of Norway spruce (Picea abies) to Heterobasidion annosum s.l., a pathogenic basidiomycete species complex, is linked to a quantitative trait loci that associates with differences in fungal growth in sapwood (FGS) that includes a gene, PaLAR3, which encodes a leucoanthocyanidin reductase...
August 2016: Plant Physiology
https://www.readbyqxmd.com/read/27239715/ecological-restoration-across-the-mediterranean-basin-as-viewed-by-practitioners
#10
Alice Nunes, Graça Oliveira, Teresa Mexia, Alejandro Valdecantos, Claudio Zucca, Edoardo A C Costantini, Eleni M Abraham, Apostolos P Kyriazopoulos, Ayman Salah, Ruediger Prasse, Otília Correia, Sarah Milliken, Benz Kotzen, Cristina Branquinho
Restoration efforts in the Mediterranean Basin have been changing from a silvicultural to an ecological restoration approach. Yet, to what extent the projects are guided by ecological restoration principles remains largely unknown. To analyse this issue, we built an on-line survey addressed to restoration practitioners. We analysed 36 restoration projects, mostly from drylands (86%). The projects used mainly soil from local sources. The need to comply with legislation was more important as a restoration motive for European Union (EU) than for non-EU countries, while public opinion and health had a greater importance in the latter...
October 1, 2016: Science of the Total Environment
https://www.readbyqxmd.com/read/27179322/modeled-effects-of-soil-acidification-on-long-term-ecological-and-economic-outcomes-for-managed-forests-in-the-adirondack-region-usa
#11
Jesse Caputo, Colin M Beier, Timothy J Sullivan, Gregory B Lawrence
Sugar maple (Acer saccharum) is among the most ecologically and economically important tree species in North America, and its growth and regeneration is often the focus of silvicultural practices in northern hardwood forests. A key stressor for sugar maple (SM) is acid rain, which depletes base cations from poorly-buffered forest soils and has been associated with much lower SM vigor, growth, and recruitment. However, the potential interactions between forest management and soil acidification - and their implications for the sustainability of SM and its economic and cultural benefits - have not been investigated...
September 15, 2016: Science of the Total Environment
https://www.readbyqxmd.com/read/27097097/structure-of-bird-communities-in-eucalyptus-plantations-nestedness-as-a-pattern-of-species-distribution
#12
L I Jacoboski, A de Mendonça-Lima, S M Hartz
Replacement of native habitats by tree plantations has increased dramatically in Brazil, resulting in loss of structural components for birds, such as appropriate substrates for foraging and nesting. Tree plantations can also reduce faunal richness and change the composition of bird species. This study evaluated the structure of avian communities in eucalyptus plantations of different ages and in a native forest. We classified species as habitat specialists or generalists, and assessed if the species found in eucalyptus plantations are a subset of the species that occur in the native forest...
April 19, 2016: Brazilian Journal of Biology, Revista Brasleira de Biologia
https://www.readbyqxmd.com/read/27064429/potential-risks-to-freshwater-aquatic-organisms-following-a-silvicultural-application-of-herbicides-in-oregon-s-coast-range
#13
Jeff Louch, Vickie Tatum, Ginny Allen, V Cody Hale, Jeffrey McDonnell, Robert J Danehy, George Ice
Glyphosate, aminomethylphosphonic acid (AMPA), imazapyr, sulfometuron methyl (SMM), and metsulfuron methyl (MSM) were measured in streamwater collected during and after a routine application of herbicides to a forestry site in Oregon's Coast Range. Samples were collected at three stations: HIGH at the fish/no-fish interface in the middle of the harvest/spray unit; MID at the bottom of the unit; and LOW downstream of the unit. All herbicides were applied by helicopter in a single tank mix. AMPA, imazapyr, SMM, and MSM were not detected (ND) in any sample at 15, 600, 500, and 1000 ng/L, respectively...
April 11, 2016: Integrated Environmental Assessment and Management
https://www.readbyqxmd.com/read/27038616/unravel-biophysical-factors-on-river-water-quality-response-in-chilean-central-southern-watersheds
#14
Mariela A Yevenes, José L Arumí, Laura Farías
Identifying the key anthropogenic (land uses) and natural (topography and climate) biophysical drivers affecting river water quality is essential for efficient management of water resources. We tested the hypothesis that water quality can be predicted by different biophysical factors. Multivariate statistics based on a geographical information system (GIS) were used to explore the influence of factors (i.e., precipitation, topography, and land uses) on water quality (i.e., nitrate (NO 3 (-)), phosphate (PO 4 (3-)), silicate (Si(OH)4), dissolved oxygen (DO), suspended solids (TSS), biological oxygen demand (DO), temperature (T), conductivity (EC), and pH) for two consecutive years in the Itata and Biobío river watersheds, Central Chile (36° 00' and 38° 30')...
May 2016: Environmental Monitoring and Assessment
https://www.readbyqxmd.com/read/26936543/measurement-of-stiffness-of-standing-trees-and-felled-logs-using-acoustics-a-review
#15
Mathew Legg, Stuart Bradley
This paper provides a review on the use of acoustics to measure stiffness of standing trees, stems, and logs. An outline is given of the properties of wood and how these are related to stiffness and acoustic velocity throughout the tree. Factors are described that influence the speed of sound in wood, including the different types of acoustic waves which propagate in tree stems and lumber. Acoustic tools and techniques that have been used to measure the stiffness of wood are reviewed. The reasons for a systematic difference between direct and acoustic measurements of stiffness for standing trees, and methods for correction, are discussed...
February 2016: Journal of the Acoustical Society of America
https://www.readbyqxmd.com/read/26909626/medium-and-large-sized-mammals-in-a-steppic-savanna-area-of-the-brazilian-pampa-survey-and-conservation-issues-of-a-poorly-known-fauna
#16
C C Espinosa, D Galiano, B B Kubiak, J R Marinho
The wildlife of the Brazilian Pampa is threatened by large-scale habitat loss, due in particular to the expansion of soybean cultivation and the conversion of grasslands areas into extensive areas of silviculture. It is essential to study how the mammal fauna copes with the highly fragmented, human-influenced, non-protected landscape. Our study presents the results of a survey of the large- and medium-sized mammals of a typical human-influenced steppic savanna area of the Pampa biome. The survey was conducted exclusively with the use of camera traps over a period of 16 months...
February 2016: Brazilian Journal of Biology, Revista Brasleira de Biologia
https://www.readbyqxmd.com/read/26898361/the-impacts-of-increasing-drought-on-forest-dynamics-structure-and-biodiversity-in-the-united-states
#17
REVIEW
James S Clark, Louis Iverson, Christopher W Woodall, Craig D Allen, David M Bell, Don C Bragg, Anthony W D'Amato, Frank W Davis, Michelle H Hersh, Ines Ibanez, Stephen T Jackson, Stephen Matthews, Neil Pederson, Matthew Peters, Mark W Schwartz, Kristen M Waring, Niklaus E Zimmermann
We synthesize insights from current understanding of drought impacts at stand-to-biogeographic scales, including management options, and we identify challenges to be addressed with new research. Large stand-level shifts underway in western forests already are showing the importance of interactions involving drought, insects, and fire. Diebacks, changes in composition and structure, and shifting range limits are widely observed. In the eastern US, the effects of increasing drought are becoming better understood at the level of individual trees, but this knowledge cannot yet be confidently translated to predictions of changing structure and diversity of forest stands...
July 2016: Global Change Biology
https://www.readbyqxmd.com/read/26888951/host-trait-combinations-drive-abundance-and-canopy-distribution-of-atmospheric-bromeliad-assemblages
#18
Cleber Juliano Neves Chaves, Júlio César Dyonisio, Davi Rodrigo Rossatto
Epiphytes are strongly dependent on the conditions created by their host's traits and a certain degree of specificity is expected between them, even if these species are largely abundant in a series of tree hosts of a given environment, as in the case of atmospheric bromeliads. Despite their considerable abundance in these environments, we hypothesize that stochasticity alone cannot explain the presence and abundance of atmospheric bromeliads on host trees, since host traits could have a greater influence on the establishment of these bromeliads...
2016: AoB Plants
https://www.readbyqxmd.com/read/26853704/towards-the-development-of-multifunctional-molecular-indicators-combining-soil-biogeochemical-and-microbiological-variables-to-predict-the-ecological-integrity-of-silvicultural-practices
#19
Vincent Peck, Liliana Quiza, Jean-Philippe Buffet, Mondher Khdhiri, Audrey-Anne Durand, Alain Paquette, Nelson Thiffault, Christian Messier, Nadyre Beaulieu, Claude Guertin, Philippe Constant
The impact of mechanical site preparation (MSP) on soil biogeochemical structure in young larch plantations was investigated. Soil samples were collected in replicated plots comprising simple trenching, double trenching, mounding and inverting site preparation. Unlogged natural mixed forest areas were used as a reference. Analysis of soil nutrients, abundance of bacteria and gas exchanges unveiled no significant difference among the plots. However, inverting site preparation resulted in higher variations of gas exchanges when compared with trenching, mounding and unlogged natural forest...
May 2016: Microbial Biotechnology
https://www.readbyqxmd.com/read/26840582/medium-and-large-sized-mammals-in-a-steppic-savanna-area-of-the-brazilian-pampa-survey-and-conservation-issues-of-a-poorly-known-fauna
#20
C C Espinosa, D Galiano, B B Kubiak, J R Marinho
The wildlife of the Brazilian Pampa is threatened by large-scale habitat loss, due in particular to the expansion of soybean cultivation and the conversion of grasslands areas into extensive areas of silviculture. It is essential to study how the mammal fauna copes with the highly fragmented, human-influenced, non-protected landscape. Our study presents the results of a survey of the large- and medium-sized mammals of a typical human-influenced steppic savanna area of the Pampa biome. The survey was conducted exclusively with the use of camera traps over a period of 16 months...
January 22, 2016: Brazilian Journal of Biology, Revista Brasleira de Biologia
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