David Berg results 73
· Newest (Page 1/3, per page 25)
Author: David Berg ×Clear All Filters
Search Results
Introduction Dexmedetomidine has been used to treat toxicologic conditions, but high-quality data on its use for this indication in the emergency department setting are lacking. We sought to characterize the use of dexmedetomidine in this context. Methods We conducted a dual-center retrospective cohort study of patients treated with dexmedetomidine in two academic emergency departments. We included patients who received dexmed...
Tree ferns on the move: patterns of movement and current introduction status of Cyatheales species around the worldNARA Subscribed
Tree ferns (order Cyatheales) have been moved from their native ranges for more than two centuries, and the number of species introduced to new countries has recently increased rapidly. However, no comprehensive global list of alien tree ferns exists. Botanical garden collections and the Global Biodiversity Information Facility database were examined, and a systematic literature review was conducted to collect information on t...
Learn to listen and listen to learn: reflections from a co-production process between researchers and composersNARA Subscribed
As platforms for dialogue, art-science collaborations hold the potential to cross disciplinary boundaries to better understand and engage the public in addressing sustainability challenges. Moving beyond documenting outcomes, this study details how researchers and composers combined science communication and artistic expression to co-produce performances as part of the Baltic Sea Festival Science Lab. Drawing on insights from...
Secrets of the Spring‐Keepers: Phylogeographic Analyses of a Freshwater Amphipod Uncover Dispersal Pathways in Eastern North AmericaNARA Subscribed
Aim While the Nearctic freshwater amphipod Gammarus minus is known for its adaptation to groundwater environments, relatively little is known about other aspects of the evolutionary history of the species throughout its range, which spans much of the eastern United States. As a result, we investigated the phylogeography of the species. Location Eastern United States. Taxon Gammarus minus . Methods Sequence data for two nuclear...
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...
Saving what’s left: conservation genomics of Plethobasus, a critically endangered genus of freshwater musselNARA Subscribed
Freshwater mussels (Order Unionida) are diverse, yet highly imperiled, bivalves. In the United States, about 10% of approximately 300 native species are extinct and around 60% of the remaining species are imperiled. Conservation practitioners are engaged in recovery efforts, but without genetic oversight these activities can be counterproductive. The freshwater mussel genus Plethobasus consists of three federally endangered sp...
The Toxicology Investigators Consortium 2024 Annual ReportNARA Subscribed
Scope for growth is optimized across a limited temperature range in an imperiled freshwater musselNARA Subscribed
Predicting effects of rising temperatures on the health and physiology of aquatic organisms is receiving increasing attention, particularly in arid regions with limited freshwater habitat. One approach to estimating energetic health of aquatic ectotherms is scope for growth (SFG)—the net energy available for reproduction and growth after meeting basic maintenance costs. We examined the relationships between temperature, cleara...
Unexpected pathway for intercontinental movement into the Nearctic revealed by phylogenetic analysesNARA Subscribed
Much of North America's freshwater biodiversity is derived from Palearctic lineages. Isopods of the Holarctic family Asellidae are among the most widespread and diverse freshwater crustaceans, but Nearctic species are poorly studied. We examined the evolutionary history of the family, utilizing Sanger sequencing of mitochondrial and nuclear DNA, and both maximum likelihood and Bayesian inference. The genera Calasellus and Salm...
Aim Members of the amphipod genus Gammarus have served as an excellent model for testing biogeographic hypotheses given the number of species within the genus and its unique history, with multiple taxa transitioning from marine to freshwater environments independently. However, while attention has been placed on Palearctic Gammarus , little is known about members in the Nearctic. Given trends observed within the genus, Gammaru...
SNAPSHOT USA 2019–2023: The First Five Years of Data From a Coordinated Camera Trap Survey of the United StatesNARA Subscribed
Motivation SNAPSHOT USA is an annual, multicontributor 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 specie...
Reading tea leaves worldwide: Decoupled drivers of initial litter decomposition mass‐loss rate and stabilizationNARA Subscribed
The breakdown of plant material fuels soil functioning and biodiversity. Currently, process understanding of global decomposition patterns and the drivers of such patterns are hampered by the lack of coherent large‐scale datasets. We buried 36,000 individual litterbags (tea bags) worldwide and found an overall negative correlation between initial mass‐loss rates and stabilization factors of plant‐derived carbon, using the Tea...
Pathways from research to sustainable development: Insights from ten research projects in sustainability and resilienceNARA Subscribed
Drawing on collective experience from ten collaborative research projects focused on the Global South, we identify three major challenges that impede the translation of research on sustainability and resilience into better-informed choices by individuals and policy-makers that in turn can support transformation to a sustainable future. The three challenges comprise: (i) converting knowledge produced during research projects in...
Practical Guide to Measuring Wetland Carbon Pools and FluxesNARA Subscribed
Wetlands cover a small portion of the world, but have disproportionate influence on global carbon (C) sequestration, carbon dioxide and methane emissions, and aquatic C fluxes. However, the underlying biogeochemical processes that affect wetland C pools and fluxes are complex and dynamic, making measurements of wetland C challenging. Over decades of research, many observational, experimental, and analytical approaches have bee...
Addressing chemical pollution in biodiversity researchNARA Subscribed
Climate change, biodiversity loss, and chemical pollution are planetary‐scale emergencies requiring urgent mitigation actions. As these “triple crises” are deeply interlinked, they need to be tackled in an integrative manner. However, while climate change and biodiversity are often studied together, chemical pollution as a global change factor contributing to worldwide biodiversity loss has received much less attention in biod...
Rationale Compulsivity often develops during childhood and is associated with elevated glutamate levels within the frontostriatal system. This suggests that anti-glutamatergic drugs, like memantine, may be an effective treatment. Objective Our goal was to characterize the acute and chronic effect of memantine treatment on compulsive behavior and frontostriatal network structure and function in an adolescent rat model of compul...
Past climate cooling promoted global dispersal of amphipods from Tian Shan montane lakes to circumboreal lakesNARA Subscribed
Climate changes have substantial impacts on the geographic distribution of montane lakes and evolutionary dynamics of cold‐adapted species. Past climate cooling is hypothesized to have promoted the dispersal of cold‐adapted species via montane lakes, while future climate warming is thought to constrain their distributions. We test this hypothesis by using phylogeographic analysis and niche modeling of the Holarctic crustacean...