project 3_ Isabella Kemper
Marine Anthropogenic Litter
The most visible effect of plastic pollution on marine organisms concerns wildlife entanglement in marine debris, often in discarded or lost fishing gear and ropes (Laist 1997; Baulch and Perry 2014). Entangled biota are hindered in their ability to move, feed and breathe. In addition, many marine organisms mistake litter for food and ingest it (Day et al. 1985; Laist 1997). Indigestible debris such as plastics may accumulate in their stomachs and affect individual fitness, with consequences for reproduction and survival, even if not causing direct mortality (Van Franeker 1985; Bjorndal et al.1994; McCauley and Bjorndal 1999).
The total number of marine species with documented records of either entangle- ment and/or ingestion has doubled with an increase from 267 species in Laist (1997) to 557 species in this new review (Table 4.3 and Online Supplements). The increase in number of affected species is substantial in all groups. The documented impact for marine turtles increased from 86 to 100 % of species (now 7 of 7 spe- cies), for marine mammals from 43 to 66 % of species (now 81 of 123 species) and for seabirds from 44 to 50 % of species (now 203 of 406 species). Among marine mammals the percentage of affected whales increased from 37 to 68 % of species (now 54 of 80 species) and seals from 58 to 67 % of species (now 22 of 32 species) (see Table 4.3).
Bergmann, Bergmann, M., Gutow, L., & Klages, M. (2015). Marine Anthropogenic Litter (Bergmann, L. Gutow, & M. Klages, Eds.; 1st ed. 2015.). Springer Nature. https://doi.org/10.1007/978-3-319-16510-3
https://www.youtube.com/watch?v=X6U5O-zKXlk




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