Silent oceans: ocean acidification impoverishes natural soundscapes by altering sound production of the world's noisiest marine invertebrate
| Autor: | Ivan Nagelkerken, Tullio Rossi, Sean D. Connell |
|---|---|
| Rok vydání: | 2016 |
| Předmět: |
0106 biological sciences
Soundscape Marine life Biology 010603 evolutionary biology 01 natural sciences General Biochemistry Genetics and Molecular Biology Loudness Hydrothermal Vents Decapoda Animals Seawater Ecosystem 14. Life underwater Research Articles General Environmental Science General Immunology and Microbiology Ecology Soundscape ecology 010604 marine biology & hydrobiology Ocean acidification General Medicine Carbon Dioxide Hydrogen-Ion Concentration 15. Life on land Shrimp Oceanography Italy Habitat 13. Climate action Vocalization Animal General Agricultural and Biological Sciences New Zealand |
| Zdroj: | Proceedings of the Royal Society B: Biological Sciences. 283:20153046 |
| ISSN: | 1471-2954 0962-8452 |
| Popis: | Soundscapes are multidimensional spaces that carry meaningful information for many species about the location and quality of nearby and distant resources. Because soundscapes are the sum of the acoustic signals produced by individual organisms and their interactions, they can be used as a proxy for the condition of whole ecosystems and their occupants. Ocean acidification resulting from anthropogenic CO 2 emissions is known to have profound effects on marine life. However, despite the increasingly recognized ecological importance of soundscapes, there is no empirical test of whether ocean acidification can affect biological sound production. Using field recordings obtained from three geographically separated natural CO 2 vents, we show that forecasted end-of-century ocean acidification conditions can profoundly reduce the biological sound level and frequency of snapping shrimp snaps. Snapping shrimp were among the noisiest marine organisms and the suppression of their sound production at vents was responsible for the vast majority of the soundscape alteration observed. To assess mechanisms that could account for these observations, we tested whether long-term exposure (two to three months) to elevated CO 2 induced a similar reduction in the snapping behaviour (loudness and frequency) of snapping shrimp. The results indicated that the soniferous behaviour of these animals was substantially reduced in both frequency (snaps per minute) and sound level of snaps produced. As coastal marine soundscapes are dominated by biological sounds produced by snapping shrimp, the observed suppression of this component of soundscapes could have important and possibly pervasive ecological consequences for organisms that use soundscapes as a source of information. This trend towards silence could be of particular importance for those species whose larval stages use sound for orientation towards settlement habitats. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|