Ancient DNA analysis of archaeological specimens extends Chinook salmon's known historic range to San Francisco Bay's tributaries and southernmost watershed.
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ABSTRACT:
SUBMITTER: Lanman RB
PROVIDER: S-EPMC8049268 | biostudies-literature |
REPOSITORIES: biostudies-literature
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Project description:Empirical evidence exists that some marine animals perceive and orient to local distortions in the earth's main static geomagnetic field. The magnetic fields produced by undersea electric power cables that carry electricity from hydrokinetic energy sources to shore-based power stations may produce similar local distortions in the earth's main field. Concerns exist that animals migrating along the continental shelves might orient to the magnetic field from the cables, and move either inshore or offshore away from their normal path. We have studied the effect of the Trans Bay Cable (TBC), an 85-km long, high voltage, direct current (DC) transmission line leading underwater from Pittsburg, CA to San Francisco, CA, on fishes migrating through the San Francisco Estuary. These included Chinook salmon smolts (Oncorhynchus tshawytscha) that migrate downstream through the San Francisco Estuary to the Pacific Ocean and adult green sturgeon (Acipenser medirostris), which migrate upstream from the ocean through the estuary to their spawning habitat in the upper Sacramento River and return to the ocean after spawning occurs. Based on a detailed gradiometer survey, we found that the distortions in the earth's main field produced by bridges across the estuary were much greater than those from the Trans Bay Cable. The former anomalies exceeded the latter by an order of magnitude or more. Significant numbers of tagged Chinook salmon smolts migrated past bridges, which produced strong magnetic anomalies, to the Golden Gate Bridge, where they were recorded by dual arrays of acoustic tag-detecting monitors moored in lines across the mouth of the bay. In addition, adult green sturgeon successfully swam upstream and downstream through the estuary on the way to and from their spawning grounds. Hence, the large anomalies produced by the bridges do not appear to present a strong barrier to the natural seasonal movement patterns of salmonid smolts and adult green sturgeon.
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Project description:ObjectivesIn 2017, the Centers for Disease Control and Prevention reported more than 47,600 deaths as a result of opioid overdose in the United States. In an effort to reduce these deaths, California passed legislation providing pharmacists with the ability to furnish naloxone without a prescription. Our study examined pharmacies in San Francisco that furnished naloxone and provided guidance for pharmacies seeking to develop similar programs. The study aims were to (1) identify the legal, structural, social-environmental, and financial components of a pharmacy model that allows for successful naloxone distribution, (2) evaluate the attitudes and beliefs of pharmacy staff members toward patients receiving or requesting naloxone, and (3) assess relationships between these attitudes and beliefs and naloxone furnishing at the pharmacy.MethodsThis cross-sectional study used a series of semistructured interviews of pharmacy staff in San Francisco conducted April-October 2019. Through a thematic, inductive analysis of collected data, emerging themes were mapped to the primary study aims.ResultsWe interviewed 14 pharmacists and pharmacy technicians at 4 community pharmacies. We identified 4 factors for success in implementing a naloxone furnishing protocol: administrative-led efforts, pharmacist-led efforts, increasing pharmacist engagement, and increasing patient engagement. The respondents also discussed the approaches they used to overcome previously identified barriers: cost, time, expectations of unwanted clientele, and patients' feelings of stigma.ConclusionPharmacists' approaches to implementing naloxone furnishing had common features across locations, suggesting many of these strategies could be replicated in other community pharmacies.
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