While estuaries are considered valuable nurseries for many harvested fish species, little quantitative data exist about the spatial scales over which estuaries supply individuals to coastal reefs and how this influences coastal metapopulations. Quantifying this connectivity between estuaries and coastal reefs will assist the sustainable management of fisheries and key fish habitat. This information is particularly pertinent considering estuaries world-wide are experiencing degradation and habitat loss. We examine how the relative abundance and body length of three exploited fishes (Chrysophrys auratus, Pseudocaranx georgianus and Nemadactylus douglasii) varied in relation to the proximity and size of the nearest estuary, predicting that estuarine dependent species (i.e. C. auratus) would be smaller and more abundant on reefs close to large estuaries. As a network of ‘no-take’ marine reserves exist across the study area, we also assessed for reserve effects and if these were influen
simulating a cough to see how coronavirus droplets may spread new the workplace and other real world situations. this mannequin s mouth is filled with water and glycerin. a pump forces it to expel the mixture similar to a cough. a green laser captures the droplets in the air. the professors aren t so concerned about the big droplets that fall to the ground. it s the smaller aerosolized droplets that linger in the air that pose the greatest risk. to simulate the real world, the scientists use a plexiglas screen similar to those found in many offices, retail stores, nail salons and airports nationwide. when the mannequin coughs, the screen traps most of the larger particles so the person on the other side may avoid a direct hit. but those smaller aerosolized particles still ascape, around the sides and over the top. they re not 100%, the passage of the droplet to the other