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Impacts of Quaternary Climate History on the Biogeography of Specialized Butterflies in the Great Basin of North AmericaNARA Subscribed
Aim Dramatic Quaternary climate fluctuations impacted the evolutionary history and contemporary biogeography of many residents of the Great Basin Desert of western North America. This study investigates the historical biogeographic processes that shaped the contemporary distribution of genetic variation in a polytypic group of specialized butterflies that are residents of unique dune and playa habitats. Many of the subspecies...
The hyperiid amphipod Brachyscelus rapacoides is a warm-water species associated with gelatinous zooplankton. In the Mediterranean it has been reported in association with Rhopilema nomadica in both Israel and Turkey. Here, we document the first record of B. rapacoides in Greek waters, representing the first confirmed record for Europe, based on both morphological examination and DNA barcoding of the mitochondrial COI gene. Sp...
Biomass dynamics of primary producers provide a basis for assessing their capacity to capture carbon and mitigate excess greenhouse gases. Here, we estimate inter-annual and seasonal biomass cycles in canopy-forming Sargassaceae at 19 sites spanning ~ 200 km of the Ningaloo World Heritage Area over 11 consecutive years. Our global average summer estimate of 1.53 kg wet wt m −2 equates to 4.1–9.4 Gg of standing macroalgal carbo...
Sporecasting Biogeography Across Scales: Continental Patterns and Local Constraints on Macrofungal DispersalNARA Subscribed
Understanding how aerial fungal diversity varies across space, habitat, and disturbance is key to linking local‐scale sporocarp (fruiting body) reproduction with continental‐scale biogeography. In this study, we combined passive spore trap metabarcoding with macrofungal sporocarp records from 31 plots in eight sites across North America to quantify how site, habitat, and fire history shape aerial macrofungal communities. From...
We investigated the effects of whole reservoir nitrogen (N) addition on kokanee growth in Dworshak Reservoir, Idaho. We hypothesized that N addition would improve the growth of kokanee ( Oncorhynchus nerka ) at a given level of abundance by increasing the availability of Daphnia , an important food source. Age‐specific size (length, weight, and relative weight) and biomass were compared for periods with and without N addition....
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...
SNAPSHOT USA 2024: Year 6 of the Coordinated National Camera Trap Survey of the United StatesNARA Subscribed
Motivation SNAPSHOT USA is an annual, multi‐contributor camera trap survey of mammals across the United States. The growing SNAPSHOT USA dataset is intended for tracking the spatial and temporal responses of mammal populations to changes in land use, land cover and climate. These data will be useful for exploring the drivers of spatial and temporal changes in relative abundance and distribution, as well as the impacts of speci...
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...
Patagonian deglaciation: aquatic macroinvertebrate biodiversity in proglacial and paraglacial pondsNARA Subscribed
Glacier retreat is rapidly transforming cryospheric landscapes with new pond networks establishing in deglaciated landscapes. However, our understanding of the aquatic biodiversity within these rapidly evolving landscapes has been limited, especially in southern Patagonia despite having the largest temperate icefields globally. We examined the aquatic macroinvertebrate diversity in paraglacial forest and proglacial ponds at th...
Marine megafauna species are affected by a wide range of anthropogenic threats. To evaluate the risk of such threats, species’ vulnerability to each threat must first be determined. We build on the existing threats classification scheme and ranking system of the International Union for Conservation of Nature (IUCN) Red List of Threatened Species by assessing the vulnerability of 256 marine megafauna species to 23 at‐sea threat...
The Toxicology Investigators Consortium 2024 Annual ReportNARA Subscribed
Age‐based population dynamics of the four‐rayed rattail Coryphaenoides subserrulatus from the Chatham Rise, New ZealandNARA Subscribed
This study explores the age‐based population dynamics of the four‐rayed rattail Coryphaenoides subserrulatus, a bycatch species from the Chatham Rise orange roughy ( Hoplostethus atlanticus ) fishery. Age and size distribution of C. subserrulatus ranged from 2 to 27 years, and 139 mm to 366 mm (TL), respectively. The sampled population was female‐dominated, especially in the older and larger classes, with a sex ratio of 1.69 f...