G. STEWART results 326
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A framework for identifying paper parksNARA Subscribed
Intertropical convergence zone and El Niño Southern oscillation controls on late Holocene rainfall variability in PalauNARA Subscribed
The Tropical West Pacific is an understudied region in environmental and archaeological studies when compared to continental regions. The unique geologies, climate systems, and ecological dynamics in the Tropical West Pacific greatly limit the transferrability of palaeoenvironmental proxies established from studies outside of this region. To address this gap, we present a ~5600 yr multi-proxy record of environmental change fro...
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...
Purpose The Valsalva manoeuvre (VM) may contribute to the observed increase in pulse wave velocity (PWV) following resistance exercise (RE). However, VM use during RE is rarely reported or discussed in the literature. We compared the acute carotid-femoral PWV response before and following RE with paced breathing, RE with a VM (REVM) and the VM alone. Methods 15 healthy RE-untrained participants (female = 8) (mean ± SD: age, 24...
Energy-conserving behavioural strategies in southern right whale mother-calf pairs during early lactationNARA Subscribed
As capital breeders, baleen whale mothers fast while on the calving grounds, relying on finite energy reserves to give birth and support the rapid growth of their calves. Whereas maternal size and condition provide clear energetic advantages, the role of energy-conserving behaviours is less understood. This study aimed to examine southern right whale ( Eubalaena australis , SRW) mother-calf energy-conserving behaviours through...
Swimming Under the Radar: Trout‐Free Kōaro Populations in Aotearoa Lakes and Tarns Are Rare, Understudied, and DisappearingNARA Subscribed
Over the last 150 years, most large, easily accessible lakes and tarns in Aotearoa (New Zealand) have experienced trout introductions or incursions, leaving few salmonid‐free reference lakes. Using database information and field surveys, we characterized lake, pond/tarn, and wetland systems found throughout Aotearoa that support populations of kōaro ( Galaxias brevipinnis ) known or putatively believed to be trout‐free. These...
DHX37 protein and mRNA expression patterns in breast and ovarian cancer and their prognostic implicationsNARA Subscribed
DEAH-box RNA helicase 37 (DHX37) is a highly conserved RNA helicase involved in ribosome biogenesis, RNA metabolism and immune regulation. Dysregulation of RNA helicases has been implicated in tumourigenesis; however, the clinical significance of DHX37 expression in tumours is still emerging and requires further study. This study investigated the expression of DHX37 in large breast and ovarian cancer patient cohorts using immu...
Interpretable deep learning reveals spatiotemporal MRI features of brain aging that align with neurodegenerationNARA Subscribed
Cortical thinning and atrophy are hallmarks of brain aging that have been characterized using magnetic resonance imaging (MRI). Brain aging involves many neuroanatomic features whose effects on brain structure remain unexplored. To address this challenge, we trained interpretable deep neural networks (DNNs) to estimate brain age (BA) from T 1 -weighted ( T 1 w) MRI. By identifying MRI features unapparent to humans, DNNs can fi...
Comparison of machine learning interpolation models for movement trajectories of desert bighorn sheepNARA Subscribed
Global positioning system (GPS) collars have revolutionized wildlife monitoring by enabling fine-scale inference of animal movement, behavior, and habitat use. However, GPS fix failures associated with terrain, canopy, or animal behavior introduce bias into downstream ecological analyses. In a study of 16 translocated desert bighorn sheep ( Ovis canadensis mexicana ) in Sonora, Mexico, we recorded 55,277 scheduled GPS fixes ov...
Connectivity is a multifaceted concept that has important implications for the management and conservation of marine and freshwater fishes. We developed a conceptual framework that encompasses multiple, interrelated categories of connectedness, including landscape (e.g., structural, functional) connectivity and ecological (e.g., trophic, genetic, demographic) connectivity, that together shape the flow of organisms, energy and...
Alzheimer’s disease (AD) disproportionately affects women and carriers of the apolipoprotein E ε4 allele (APOE4), yet little is known about how sex and APOE interact to influence white matter (WM) integrity during disease progression. We integrated diffusion MRI and matched blood transcriptomic data to investigate these interactions and their underlying biological mechanisms. WM microstructure was quantified using diffusion te...