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Knowledge and attitudes about lung cancer screening amongst American Indian adults who use commercial tobacco.
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Division of Environmental Health Sciences, University of Minnesota School of Public Health, Minneapolis, MN, USA.
Lung cancer is the leading cause of cancer related death in the US and the world. In some parts of the US, American Indian adults experience extreme disparities in lung cancer incidence and mortality that mirror commercial tobacco use disparities. Lung cancer screening (LCS) with low-dose chest computed tomography has been underutilized in all groups, including in American Indian communities, although they have the greatest proportion of people who smoke older than 50 years of age eligible for LCS.
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Competition for waterborne food resources among tropical shallow-water sponges.
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Department of Biology and Marine Biology, Center for Marine Science, University of North Carolina, Wilmington, North Carolina, USA.
A recurrent theme in marine ecology is that the community dynamics of sessile, suspension-feeding animals is primarily limited by the availability of space, but in some habitats, filtration by these organisms may locally deplete water column resources, setting the stage for exploitative competition for food. We examined filtration by sponge assemblages in the shallow waters (~2 m depth) of Florida Bay (Florida, USA), where water residence times are often high and filtration by dense communities of sponges was hypothesized to deplete the water column of food, primarily picoplankton and dissolved organic matter (DOM). We transplanted three sponge species into replicate locations that differed by an order of magnitude in natural sponge community biomass.
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