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Articles 1 - 15 of 15
Full-Text Articles in Life Sciences
Data From: Target Sequence Capture Of Nuclear-Encoded Genes For Phylogenetic Analysis In Ferns, Paul G. Wolf, Tanner A. Robison, Matthew G. Johnson, Michael A. Sundue, Weston L. Testo, Carl J. Rothfels
Data From: Target Sequence Capture Of Nuclear-Encoded Genes For Phylogenetic Analysis In Ferns, Paul G. Wolf, Tanner A. Robison, Matthew G. Johnson, Michael A. Sundue, Weston L. Testo, Carl J. Rothfels
Browse all Datasets
Premise of the study: Until recently, most phylogenetic studies of ferns were based on chloroplast genes. Evolutionary inferences based on these data can be incomplete because the characters are from a single linkage group and are uniparentally inherited. These limitations are particularly acute in studies of hybridization, which is prevalent in ferns; fern hybrids are common and ferns are able to hybridize across highly diverged lineages, up to 60 million years since divergence in one documented case. However, it not yet clear what effect such hybridization has on fern evolution, in part due to a paucity of available biparentally inherited …
Heritable Sperm Chromatin Epigenetics: A Break To Remember, Ralph G. Meyer, Chelsea C. Ketchum, Mirella L. Meyer-Ficca
Heritable Sperm Chromatin Epigenetics: A Break To Remember, Ralph G. Meyer, Chelsea C. Ketchum, Mirella L. Meyer-Ficca
UAES Publications
Sperm chromatin not only has a unique structure to condense and protect the paternal DNA in transit, but also provides epigenetic information that supports embryonic development. Most of the unique sperm nuclear architecture is formed during the sweeping postmeiotic chromatin remodeling events in spermiogenesis, where the majority of nucleosomes are removed and replaced by protamines. The remaining histones and other chromatin proteins are located in structurally and transcriptionally relevant positions in the genome and carry diverse post-translational modifications relevant to the control of embryonic gene expression. How such postmeiotic chromatin-based programming of sperm epigenetic information proceeds, and how susceptible the …
Oystershell Scale Impacts And Mitigation Options On The Kaibab And Coconino Nf’S, Amanda M. Grady
Oystershell Scale Impacts And Mitigation Options On The Kaibab And Coconino Nf’S, Amanda M. Grady
Aspen Bibliography
This report documents a site visit to evaluate aspen stands experiencing oystershell scale damage on the Kaibab and Coconino National Forest’s. The site visit was requested by Kaibab NF, foresters including; Josh Giles, Jessi Outzs, Michael Sedgeman, Woody Rokala and Coconino Silviculturist, Mark Nabel. On November 19, 2016, Amanda Grady accompanied the individuals listed above, to evaluate stand conditions within three aspen exclosures. Two were located on the Williams Ranger District, Kaibab NF in the vicinity of Spring Valley. The third exclosure was located on the Flagstaff RD, Coconino NF and accessed from HWY 89-A via the Pump House Wash …
Species Delimitation And Lineage Separation History Of A Species Complex Of Aspens In China, Honglei Zheng, Liqiang Fan, Richard I. Milne, Lei Zhang, Yaling Wang, Kangshan Mao
Species Delimitation And Lineage Separation History Of A Species Complex Of Aspens In China, Honglei Zheng, Liqiang Fan, Richard I. Milne, Lei Zhang, Yaling Wang, Kangshan Mao
Aspen Bibliography
Species delimitation in tree species is notoriously challenging due to shared polymorphisms among species. An integrative survey that considers multiple operational criteria is a possible solution, and we aimed to test it in a species complex of aspens in China. Genetic [four chloroplast DNA (cpDNA) fragments and 14 nuclear microsatellite loci (nSSR)] and morphological variations were collected for 76 populations and 53 populations, respectively, covering the major geographic distribution of the Populus davidiana-rotundifoliacomplex. Bayesian clustering, analysis of molecular variance (AMOVA), Principle Coordinate Analysis (PCoA), ecological niche modeling (ENM), and gene flow (migrants per generation), were employed to …
Restoration Of The Iconic Pando Aspen Clone: Emerging Evidence Of Recovery, Paul C. Rogers, Jody A. Gale
Restoration Of The Iconic Pando Aspen Clone: Emerging Evidence Of Recovery, Paul C. Rogers, Jody A. Gale
Aspen Bibliography
Quaking aspen (Populus tremuloides Michx.) is being stressed across the America West from a variety of sources including drought, herbivory, fire suppression, development, and past management practices. Rich assemblages of plants and animals that utilize aspen forests, as well as economic values of tourism, grazing, hunting, and water conservation, make aspen ecosystems among the most valuable vegetation types in this region. The 43-ha Pando clone near Fish Lake, Utah, is an iconic example of an aspen community undergoing rapid decline due to overstory mortality and chronic recruitment failure. As part of a larger project to restore Pando, we fenced, …
Guide To Quaking Aspen Ecology And Management With Emphasis On Bureau Of Land Management Lands In The Western United States, Paul C. Rogers
Guide To Quaking Aspen Ecology And Management With Emphasis On Bureau Of Land Management Lands In The Western United States, Paul C. Rogers
Aspen Bibliography
No abstract provided.
Climatic Sensitivity Of A Mixed Forest Association Of White Spruce And Trembling Aspen At Their Southern Range Limit, Sophan Chhin, G. Geoff Wang
Climatic Sensitivity Of A Mixed Forest Association Of White Spruce And Trembling Aspen At Their Southern Range Limit, Sophan Chhin, G. Geoff Wang
Aspen Bibliography
No abstract provided.
Influence Of Mature Overstory Trees On Adjacent 12-Year Regeneration And The Woody Understory: Aggregated Retention Versus Intact Forest, Miranda T. Curzon, Susan C. Baker, Christel C. Kern, Brian J. Palik, Anthony W. D'Amato
Influence Of Mature Overstory Trees On Adjacent 12-Year Regeneration And The Woody Understory: Aggregated Retention Versus Intact Forest, Miranda T. Curzon, Susan C. Baker, Christel C. Kern, Brian J. Palik, Anthony W. D'Amato
Aspen Bibliography
No abstract provided.
Post-Glacial Biogeography Of Trembling Aspen Inferred From Habitat Models And Genetic Variance In Quantitative Traits, Chen Ding, Stefan G. Schreiber, David R. Roberts, Andreas Hamann, Jean S. Brouard
Post-Glacial Biogeography Of Trembling Aspen Inferred From Habitat Models And Genetic Variance In Quantitative Traits, Chen Ding, Stefan G. Schreiber, David R. Roberts, Andreas Hamann, Jean S. Brouard
Aspen Bibliography
No abstract provided.
Assessment Of Aspen Ecosystem Vulnerability To Climate Change For The Uinta-Wasatch- Cache And Ashley National Forests, Utah, Janine Rice, Tim Bardsley, Pete Gomben, Dustin Bambrough, Stacey Weems, Allen Huber, Linda A. Joyce
Assessment Of Aspen Ecosystem Vulnerability To Climate Change For The Uinta-Wasatch- Cache And Ashley National Forests, Utah, Janine Rice, Tim Bardsley, Pete Gomben, Dustin Bambrough, Stacey Weems, Allen Huber, Linda A. Joyce
Aspen Bibliography
No abstract provided.
Aspen Health On National Forests In The Northern Rocky Mountain Region, James T. Blodgett, Kurt K. Allen, Kendra Schotzko, Al Dymerski
Aspen Health On National Forests In The Northern Rocky Mountain Region, James T. Blodgett, Kurt K. Allen, Kendra Schotzko, Al Dymerski
Aspen Bibliography
No abstract provided.
Quaking Aspen In The Northern Rockies Retention And Restoration, Camille Stevens-Rumann, Penelope Morgan, Eva Strand, Diane Abendroth
Quaking Aspen In The Northern Rockies Retention And Restoration, Camille Stevens-Rumann, Penelope Morgan, Eva Strand, Diane Abendroth
Aspen Bibliography
No abstract provided.
Genotypic Variability In Populus Tremula L. Affects How Anthropogenic Nitrogen Enrichment Influences Litter Decomposition, Franziska Bandau, Benedicte Riber Albrectsen, Riitta Julkunen-Tiitto, Michael J. Gundale
Genotypic Variability In Populus Tremula L. Affects How Anthropogenic Nitrogen Enrichment Influences Litter Decomposition, Franziska Bandau, Benedicte Riber Albrectsen, Riitta Julkunen-Tiitto, Michael J. Gundale
Aspen Bibliography
No abstract provided.
Can Carbon Fluxes Explain Differences In Soil Organic Carbon Storage Under Aspen And Conifer Forest Overstories?, Antra Boca, Helga Van Miegroet
Can Carbon Fluxes Explain Differences In Soil Organic Carbon Storage Under Aspen And Conifer Forest Overstories?, Antra Boca, Helga Van Miegroet
Aspen Bibliography
No abstract provided.
Maintaining Ecosystem Resilience: Functional Responses Of Tree Cavity Nesters To Logging In Temperate Forests Of The Americas, Jose Tomas Ibarra, Michaela Martin, Kristina L. Cockle, Kathy Martin
Maintaining Ecosystem Resilience: Functional Responses Of Tree Cavity Nesters To Logging In Temperate Forests Of The Americas, Jose Tomas Ibarra, Michaela Martin, Kristina L. Cockle, Kathy Martin
Aspen Bibliography
Logging often reduces taxonomic diversity in forest communities, but little is known about how this biodiversity loss affects the resilience of ecosystem functions. We examined how partial logging and clearcutting of temperate forests influenced functional diversity of birds that nest in tree cavities. We used point-counts in a before-after-control-impact design to examine the effects of logging on the value, range, and density of functional traits in bird communities in Canada (21 species) and Chile (16 species). Clearcutting, but not partial logging, reduced diversity in both systems. The effect was much more pronounced in Chile, where logging operations removed critical nesting …