Article (Scientific journals)
Temporal dynamics in diversity patterns of fish sound production in the Condor seamount (Azores, NE Atlantic)
Carriço, R.; Silva, M. A.; Menezes, G. M. et al.
2020In Deep-Sea Research. Part I, Oceanographic Research Papers
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Keywords :
Biodiversity; Deep-water fishes; Fish sound detection distance; Fish sounds; Passive acoustic monitoring; Temporal patterns; Acoustic generators; Acoustic noise; Conservation; Cost effectiveness; Dynamics; Fish; Fisheries; Submarine geology; Surveys; Background noise levels; Marine protected area; Non-intrusive method; Seasonal patterns; Sound source levels; Taxonomic diversity; Temporal dynamics; Fishing (oil wells)
Abstract :
[en] Fish sounds are important components of Azorean soundscapes. Therefore, unraveling their patterns can contribute to a better assessment of local biodiversity dynamics. Passive Acoustic Monitoring (PAM) is a cost-effective, non-intrusive method providing long-term information regardless of weather or logistic conditions, which can be especially useful when monitoring remote areas. Using PAM, we assess temporal dynamics of fish vocal activity in a protected seamount and validate PAM as an important tool for biodiversity assessment in deep-sea fish communities. Thus, we evaluated the annual, seasonal and diel patterns of variation of putative fish sounds identified in an Azorean protected seamount, the Condor (ca.190 m depth). Here, 3 years (2008, 2010 and 2012) of acoustic data were collected and analysed for diversity and abundance of the most prevalent fish sounds. We compared abundance and diversity of fish sounds before and after the establishment of the marine protected area in 2010, to assess its initial protection effects. We also compared abundance and biodiversity measures (richness and Shannon diversity index) of acoustic data with fishing data from deep-water longline surveys, to verify if acoustic diversity and taxonomic diversity show a similar trend. Additionally, we estimated a likely distance range of fish sound sources from the acoustic data loggers for local background noise and typical fish sound levels. Estimated detection distance of different fish sounds, considering Condor background noise level and reported fish sound source levels, were typically larger than 10 m and could reach hundreds of meters in some species suggesting that this study potentially targeted sounds of the deep-sea fish fauna. Fish acoustic activity was prevalent at dusks and nights of all years, while no overall seasonal pattern was detected. However, one sound sequence (#1) was dominant in the autumns of all studied period. A decrease in abundance and richness of sounds was observed from 2008 to 2012 in line with the results of fishing surveys. Although unexpected, these consistent trends suggest that PAM provides a reliable representation of fish biodiversity dynamics. Taken together, this study shows that monitoring fish sounds with PAM is a valid and promising tool for fish biodiversity assessment in deep Azorean seamounts. © 2020 Elsevier Ltd
Disciplines :
Aquatic sciences & oceanology
Author, co-author :
Carriço, R.;  OKEANOS - R&D Centre and IMAR - Institute of Marine Research, University of the Azores, Horta, 9900-138, Portugal, MARE - Marine and Environmental Sciences Centre, ISPA - Instituto Universitário, Lisbon, 1149-041, Portugal
Silva, M. A.;  OKEANOS - R&D Centre and IMAR - Institute of Marine Research, University of the Azores, Horta, 9900-138, Portugal, Biology Department, Woods Hole Oceanographic Institution, Woods HoleMA, United States
Menezes, G. M.;  OKEANOS - R&D Centre and IMAR - Institute of Marine Research, University of the Azores, Horta, 9900-138, Portugal
Vieira, M.;  MARE - Marine and Environmental Sciences Centre, ISPA - Instituto Universitário, Lisbon, 1149-041, Portugal, Departamento de Biologia Animal and cE3c - Centre for Ecology, Evolution and Environmental Changes, Faculdade de Ciências, Universidade de Lisboa, Lisbon, Portugal
Bolgan, Marta ;  Université de Liège - ULiège > Département de Biologie, Ecologie et Evolution > Morphologie fonctionnelle et évolutive
Fonseca, P. J.;  Departamento de Biologia Animal and cE3c - Centre for Ecology, Evolution and Environmental Changes, Faculdade de Ciências, Universidade de Lisboa, Lisbon, Portugal
Amorim, M. C. P.;  MARE - Marine and Environmental Sciences Centre, ISPA - Instituto Universitário, Lisbon, 1149-041, Portugal, Departamento de Biologia Animal, Faculdade de Ciências, Universidade de Lisboa, Lisbon, Portugal
Language :
English
Title :
Temporal dynamics in diversity patterns of fish sound production in the Condor seamount (Azores, NE Atlantic)
Publication date :
2020
Journal title :
Deep-Sea Research. Part I, Oceanographic Research Papers
ISSN :
0967-0637
eISSN :
1879-0119
Publisher :
Elsevier Ltd
Peer reviewed :
Peer Reviewed verified by ORBi
Name of the research project :
AZORES 2020 operational programme
Funders :
FCT - Fundação para a Ciência e a Tecnologia
EC - European Commission
Funding text :
Data collection for this study was supported by the Fundação para a Ciência e a Tecnologia (FCT), Azores 2020 Operational Programme and the Fundo Regional para a Ciência e Tecnologia (FRCT), through research projects TRACE (PTDC/MAR/74071/2006), MAPCET (M2.1.2/F/012/2011), FCT-Exploratory (IF/00943/2013/CP1199/CT0001), WATCH IT (Acores-01-0145-FEDER-000057), and MISTIC SEAS II (GA11.0661/2017/750679/SUB/ENV.C2), through funds from FEDER, COMPETE, QREN, POPH, ESF
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