Astronomical and atmospheric impacts on deep-sea hydrothermal vent invertebrates

Type Publication
Publication date 2017-04
Language English
Copyright 2017 The Author(s) Published by the Royal Society. All rights reserved.
Author(s) Lelievre Yann1, 2, Legendre Pierre2, Matabos Marjolaine1, Mihaly Steve3, Lee Raymond W.4, Sarradin Pierre-Marie1, Arango Claudia P.5, Sarrazin Jozee1
Affiliation(s) 1 : IFREMER, Ctr Bretagne, REM EEP, Lab Environm Profond, F-29280 Plouzane, France.
2 : Univ Montreal, Dept Sci Biol, CP 6128,Succursale Ctr Ville, Montreal, PQ H3C 3J7, Canada.
3 : Univ Victoria, Ocean Networks Canada, POB 1700 STN CSC, Victoria, BC V8W 2Y2, Canada.
4 : Washington State Univ, Sch Biol Sci, Pullman, WA 99164 USA.
5 : Queensland Museum, Biodivers Program, POB 3300, South Brisbane, Qld 4101, Australia.
Source Proceedings Of The Royal Society B-biological Sciences (0962-8452) (Royal Soc), 2017-04 , Vol. 284 , N. 1852 , P. 20162123
DOI 10.1098/rspb.2016.2123
Note Lelièvre, Yann; Legendre, Pierre; Matabos, Marjolaine; Mihály, Steve; W. Lee, Raymond; Sarradin, Pierre-Marie; Arango, Claudia P.; Sarrazin, Jozée (2017): Supplementary material from "Astronomical and atmospheric impacts on deep-sea hydrothermal vent invertebrates". figshare. https://doi.org/10.6084/m9.figshare.c.3723970.v1
Keyword(s) deep-sea observatory, hydrothermal vents, macrofaunal abundance, surface storms, ocean tides, time-series analysis
Abstract

Ocean tides and winter surface storms are among the main factors driving the dynamics and spatial structure of marine coastal species, but the understanding of their impact on deep-sea and hydrothermal vent communities is still limited. Multidisciplinary deep-sea observatories offer an essential tool to study behavioural rhythms and interactions between hydrothermal community dynamics and environmental fluctuations. Here, we investigated whether species associated with a Ridgeia piscesae tubeworm vent assemblage respond to local ocean dynamics. By tracking variations in vent macrofaunal abundance at different temporal scales, we provide the first evidence that tides and winter surface storms influence the distribution patterns of mobile and non-symbiotic hydrothermal species (i.e. pycnogonids Sericosura sp. and Polynoidae polychaetes) at more than 2 km depth. Local ocean dynamics affected the mixing between hydrothermal fluid inputs and surrounding seawater, modifying the environmental conditions in vent habitats. We suggest that hydrothermal species respond to these habitat modifications by adjusting their behaviour to ensure optimal living conditions. This behaviour may reflect a specific adaptation of vent species to their highly variable habitat.

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Lelievre Yann, Legendre Pierre, Matabos Marjolaine, Mihaly Steve, Lee Raymond W., Sarradin Pierre-Marie, Arango Claudia P., Sarrazin Jozee (2017). Astronomical and atmospheric impacts on deep-sea hydrothermal vent invertebrates. Proceedings Of The Royal Society B-biological Sciences, 284(1852), 20162123. Publisher's official version : http://doi.org/10.1098/rspb.2016.2123 , Open Access version : http://archimer.ifremer.fr/doc/00380/49122/