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Regional oceanographic controls on water column nitrogen fixation in northern Australian watersOA Marine
Large blooms of the diazotrophic cyanobacteria, Trichodesmium , have been reported along the north coast of Australia and are readily evident in remote sensing images. During a research cruise in November 1999, we sampled from Townsville to Broome, examined Trichodesmium population densities and their rates of carbon and N 2 fixation alongside microscopy-based cell counts of them and other cyanobacterial diazotrophs. Additiona...
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...
The Toxicology Investigators Consortium 2024 Annual ReportNARA Subscribed
The Toxicology Investigators Consortium 2023 Annual ReportNARA Subscribed
The Western Tropical North Atlantic is a highly dynamic marine system where the Amazon River Plume (ARP) generates a patchwork of environmental conditions that favor different phytoplankton groups. To study phytoplanktonic community structure in such heterogeneous conditions, we used a set of five standard ship-based measurements taken from oceanographic surveys between 2010 and 2021 to characterize different habitat types. We...
The Toxicology Investigators Consortium 2022 Annual ReportNARA Subscribed
Articles You Might Have MissedNARA Subscribed
The Safe Operating Space ( SOS ) of a recreational fishery is the multidimensional region defined by levels of harvest, angler effort, habitat, predation and other factors in which the fishery is sustainable into the future. SOS boundaries exhibit trade‐offs such that decreases in harvest can compensate to some degree for losses of habitat, increases in predation and increasing value of fishing time to anglers. Conversely, hig...
Amazon River influence on nitrogen fixation and export production in the western tropical North AtlanticNARA Subscribed
As part of the ANACONDAS program, we investigated the role of the Amazon plume in stimulating offshore nitrogen fixation and export production during the river's high‐discharge period (May–June 2010). Using the shipboard underway system, we performed high‐resolution sampling of over 450,000 km 2 of surface waters, characterizing the distribution of nutrients, phytoplankton, particulate organic matter (POM), and stable carbon a...
The application of GIS and spatiotemporal analyses to investigations of unusual marine mammal strandings and mortality eventsNARA Subscribed
In 2006–2007, an unusually high number of harbor porpoises ( Phocoena phocoena ) stranded along the Washington and Oregon coastlines. Spatiotemporal analyses were used to examine their ability to detect clusters of porpoise strandings during an unusual mortality event (UME) in the Pacific Northwest using stranding location data. Strandings were evaluated as two separate populations, outer coast and inland waters. The presence...