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Recent mycological surveys in Northern Mindanao, Philippines, have uncovered two morphologically distinct, previously undescribed species of Ophiocordyceps ( Hypocreales : Ophiocordycipitaceae ). Using an integrative framework that combines morphological assessment with multilocus phylogenetics (nrSSU, nrLSU, tef1‐α , rpb1 , rpb2 ), we propose Ophiocordyceps rogongonensis sp. nov. and Ophiocordyceps xylostellae sp. nov. Phylog...
From field to sky: measurement and modeling of transgenic switchgrass pollen dispersal in the atmosphereNARA Subscribed
Accurate tracking and measurement of pollen dispersal in the atmosphere are essential for assessing cross-pollination risks, particularly in the case of genetically engineered (GE) crops. We conducted a series of unique release-recapture field studies with GE switchgrass in Oliver Springs, TN, USA. Two hundred transgenic switchgrass plants ( Panicum virgatum L. “Performer”) were planted at the center of a clear-cut field, with...
The Bayesian backtracking problem in oceanic drift modellingNARA Subscribed
Metabolic Profiles of Encapsulated Chondrocytes Exposed to Short-Term Simulated MicrogravityNARA Subscribed
The mechanism by which chondrocytes respond to reduced mechanical loading environments and the subsequent risk of developing osteoarthritis remains unclear. This is of particular concern for astronauts. In space the reduced joint loading forces during prolonged microgravity (10 −6 g) exposure could lead to osteoarthritis (OA), compromising quality of life post-spaceflight. In this study, we encapsulated human chondrocytes in a...
Responses of a federally threatened shorebird to trophic downgrading and expansion of domestic cats (Felis catus)NARA Subscribed
Along U.S. Atlantic and Gulf Coast barrier islands, red foxes ( Vulpes vulpes ) are top predators that are thought to impact smaller mesopredators and depredate beach-nesting birds. Starting in 2015, sarcoptic mange epizootics among red foxes led to their eventual temporary extirpation from most of Fire Island, NY, USA. We monitored the subsequent changes to the mammalian predator community on this barrier island and explored...
The use of unique markers in ornithology has a long history and is predicated on the assumption that markers have negligible effects on behavior and survival. The assumption that marks are harmless is particularly important with imperiled species. We studied the effects of two different marking schemes on Piping Plovers ( Charadrius melodus ), a small shorebird protected under the U.S. Endangered Species Act that is intensivel...
A framework to support the identification of critical habitat for wide-ranging species at risk under climate changeNARA Subscribed
To recover species at risk, it is necessary to identify habitat critical to their recovery. Challenges for species with large ranges (thousands of square kilometres) include delineating management unit boundaries within which habitat use differs from other units, along with assessing any differences among units in amounts of and threats to habitat over time. We developed a reproducible framework to support identification of cr...
Low-Cost, Deep-Sea Imaging and Analysis Tools for Deep-Sea Exploration: A Collaborative Design StudyOA Marine
A minuscule fraction of the deep sea has been scientifically explored and characterized due to several constraints, including expense, inefficiency, exclusion, and the resulting inequitable access to tools and resources around the world. To meet the demand for understanding the largest biosphere on our planet, we must accelerate the pace and broaden the scope of exploration by adding low-cost, scalable tools to the traditional...
Prolonging survival in good health is a fundamental societal goal. However, the leading determinants of disability-free survival in healthy older people have not been well established. Data from ASPREE, a bi-national placebo-controlled trial of aspirin with 4.7 years median follow-up, was analysed. At enrolment, participants were healthy and without prior cardiovascular events, dementia or persistent physical disability. Disab...
Common, low-frequency, rare, and ultra-rare coding variants contribute to COVID-19 severityNARA Subscribed
The combined impact of common and rare exonic variants in COVID-19 host genetics is currently insufficiently understood. Here, common and rare variants from whole-exome sequencing data of about 4000 SARS-CoV-2-positive individuals were used to define an interpretable machine-learning model for predicting COVID-19 severity. First, variants were converted into separate sets of Boolean features, depending on the absence or the pr...
Is bog water chemistry affected by increasing N and S deposition from oil sands development in Northern Alberta, Canada?NARA Subscribed
Nitrogen and sulfur emissions from oil sands operations in northern Alberta, Canada have resulted in increasing deposition of N and S to the region’s ecosystems. To assess whether a changing N and S deposition regime affects bog porewater chemistry, we sampled bog porewater at sites at different distances from the oil sands industrial center from 2009 to 2012 (10-cm intervals to a depth of 1 m) and from 2009 to 2019 (top of th...