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Aim We investigate the distribution of dispersal modes — endozoochory (via animal ingestion), synzoochory (via animal seed accumulation) and anemochory (via wind)—and seed mass of woody plants across Brazilian ecosystems, testing whether their relative abundance in local plant communities could be predicted by climate, edaphic factors and dispersal agents (e.g., the main vectors moving seeds). We expected climate to be the mai...
The Toxicology Investigators Consortium 2024 Annual ReportNARA Subscribed
The Toxicology Investigators Consortium 2023 Annual ReportNARA Subscribed
Meteorological records at Signy Station in the South Orkney Islands (SOIs) have recently been digitized to cover the period of 1947–1995. This study compares the newly available near‐surface air temperatures at Signy with those from a nearby station, Orcadas and with reanalysis datasets to provide a more comprehensive picture of the weather and climate variability in the SOIs. Temperatures from both stations show a higher degr...
The Toxicology Investigators Consortium 2022 Annual ReportNARA Subscribed
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...
Variability and change in near‐surface air temperature at 17 Antarctic stations is examined using data from the SCAR READER database. We consider the relationships between temperature, and atmospheric circulation, sea ice concentration and forcing by the tropical oceans. All 17 stations have their largest inter‐annual temperature variability during the winter and the annual mean temperature anomalies are dominated by winter te...
Variability and trends in the Southern Hemisphere high latitude, quasi‐stationary planetary wavesNARA Subscribed
We investigate variability and trends of the Southern Hemisphere quasi‐stationary planetary waves over 1979–2013 using the European Centre for Medium‐range Weather Forecasts (ECMWF) Interim reanalyses. The effects of tropical and extra‐tropical forcing factors on the phase and amplitude of the planetary waves are identified. The amplitudes of wave numbers 1–3 exhibit an annual cycle with a minimum in summer and maximum over th...
The morphological change of a headland bay beach—Tenby, West Wales, UK—was analysed over a 73-year period (1941–2014). Geo-referenced aerial photographs were used to extract shoreline positions which were subsequently compared with wave models based on storm event data. From the 1941 baseline, results showed shoreline change rates reduced over time with regression models enabling a prediction of shoreline equilibrium circa 206...
Cross-shore profiles and environmental forcing were used to analyse morphological change of a headland bay beach: Tenby, West Wales (51.66 N; −4.71 W) over a mesoscale timeframe (1996–2013). Beach profile variations were attuned with longer term shoreline change identified by previous research showing southern erosion and northern accretion within the subaerial zone and were statistically significant in both sectors although c...
The Amundsen Sea lowNARA Subscribed
We develop a climatology of the Amundsen Sea low (ASL) covering the period 1979–2008 using ECMWF operational and reanalysis fields. The depth of the ASL is strongly influenced by the phase of the Southern annular mode (SAM) with positive (negative) mean sea level pressure anomalies when the SAM is negative (positive). The zonal location of the ASL is linked to the phase of the mid‐tropospheric planetary waves and the low moves...
The impact of changes in sea ice advance on the large winter warming on the western Antarctic PeninsulaNARA Subscribed
Over 1979–2007 near‐surface air temperatures on the maritime western side of the Antarctic Peninsula have increased throughout the year, with the greatest monthly temperature rise of 1.7 °C dec −1 occurring in July as recorded at Faraday/Vernadsky (F/V) station (65.4°S, 64.4°W). The warming trend in this month has been the result of a loss of very cold days at the station with the average number of days with mean temperature b...
Physiological and environmental regulation of interannual variability in CO 2 exchange on rangelands in the western United StatesNARA Subscribed
For most ecosystems, net ecosystem exchange of CO 2 (NEE) varies within and among years in response to environmental change. We analyzed measurements of CO 2 exchange from eight native rangeland ecosystems in the western United States (58 site‐years of data) in order to determine the contributions of photosynthetic and respiratory (physiological) components of CO 2 exchange to environmentally caused variation in NEE. Rangeland...
Boronic Acid Based Modular Fluorescent Sensors for GlucoseNARA Subscribed
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