نتایج جستجو برای: fishes population
تعداد نتایج: 710990 فیلتر نتایج به سال:
The effects of artificial reef deployment on fish communities residing in areas surrounding deployment sites were quantitatively measured. Two arrays of twelve small (2 x I x 0.5 m) artificial reefs made up of2-in PVC pipe and concrete blocks were deployed in highly similar habitat in the Looe Key National Marine Sanctuary, Florida Keys, U.S,A. One array was designated as "control" while the ot...
With a current estimate of ~1,000 million tons, mesopelagic fishes likely dominate the world total fishes biomass. However, recent acoustic observations show that mesopelagic fishes biomass could be significantly larger than the current estimate. Here we combine modelling and a sensitivity analysis of the acoustic observations from the Malaspina 2010 Circumnavigation Expedition to show that the...
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