Sentence examples for concentrations of plastic from inspiring English sources
Located at Earth's midlatitudes, these gyres include the North and South Pacific Subtropical Gyres, whose eastern "garbage patches" (zones with high concentrations of plastic waste circulating near the ocean surface) have garnered the attention of scientists and the media.
In nature, the Daphnia and fish are likely exposed to low concentrations of plastic nanoparticles during their whole life-time, which allows accumulation processes to act for a much longer time period than in our study, since fish, such as crucian carp, may live for more than 10 years37.
Concentrations of plastic resin pellets in the environment were high from the 1970s to the 1990s [63, 64].
And even areas now fairly clear of plastic debris may become hazardous to the birds as concentrations of plastic debris continue to rise, the researchers suggest.
We have also seen "rivers" of calm water and/or plankton that we can navigate and find heavier concentrations of plastic discards than in the surrounding sea water.
According to CSIRO, the largest concentrations of plastic debris are located in the Tasman sea, between Australia and New Zealand, and in the southwestern margin of the Indian Ocean.
To allow the transfer of knowledge we obtained in this study, performed in a lab based environment with controlled and constant parameters, out into the environment proves difficult, as we cannot measure kairomone concentrations and environmental concentrations of plastics are still poorly understood.
Dr. Marcus Eriksen, co-founder of 5 Gyres, says a conservative estimate of the territory covered by these concentrations of plastics in our oceans (21percentt of earth's surface) plus fresh water accumulations, is 25percentt of the earth's surface.
Between 1986 and 2008 there was no increase in the concentration of plastic in the areas looked at despite a steady rise in the amount discarded.
