Using diver-operated stereo-video to monitor juvenile fish assemblages in Mediterranean coastal habitats formed by macrophytes Julia Castro-Fernández IMEDEA CSIC-UIB, Spain José M. Disdier-Gomez IMEDEA CSIC-UIB, Spain Olga Reñones IEO, Spain Joan Moranta IEO, Spain Inés Castejón-Silvo IMEDEA CSIC-UIB, Spain Jorge Terrados IMEDEA CSIC-UIB, Spain Hilmar Hinz IMEDEA CSIC-UIB, Spain This is a section of Ninth International Symposium “Monitoring of Mediterranean Coastal Areas: Problems and Measurement Techniques”(DOI: 10.36253/979-12-215-0030-1) by Laura Bonora, Donatella Carboni, Matteo De Vincenzi, Giorgio Matteucci Firenze University Press Firenze 2022 https://doi.org/10.36253/979-12-215-0030-1.55

Available for academic research purposes

Open Access

Copyright Author(s)

Content licence CC BY-NC-SA 4.0

Metadata licence CC0 1.0

This is original content, published for academic research purposes

 Digital edition XML powered by Booksflow

Littoral systems with macrophytes are nursery areas for fish. We aim to develop a combination of stereo-video and habitat mapping methods for studying fish recruitment at various temporal and spatial scales. Some benefits are: videos are permanent and data can be used for developments of artificial intelligence. There are also disadvantages: cameras have a limited field of view and video processing is time-consuming. Introducing this methodology is of great importance to assess changes in the habitat structure and the ecosystem functions provided for the fish community.

 Habitat complexity Recruitment Stereo-video Nursery Coastal ecosystems Ecosystem services

It is available online at https://doi.org/10.36253/979-12-215-0030-1.55

References Cheminée A. (2012) - Ecological functions, transformations and management of infralittoral rocky habitats from the Northwestern Mediterranean: the case of fish (Teleostei) nursery habitats. https://tel.archives-ouvertes.fr/tel-01223518 Cheminée A., Sala E., ... Francour P. (2013) - Nursery value of Cystoseira forests for Mediterranean rocky reef fishes. J. Exp. Mar. Bio. Eco., 442, 70–79. 10.1016/j.jembe.2013.02.003 Cheminée A., Pastor J., ... Francour P. (2017) - Juvenile fish assemblages in temperate rocky reefs are shaped by the presence of macro-Algae canopy and its three-dimensional structure. Sci. Rep., 7 (1), 14638. 10.1038/s41598-017-15291-y Cheminée A., Le Direach L., ... Harmelin-Vivien M. (2021) - All shallow coastal habitats matter as nurseries for Mediterranean juvenile fish. Sci. Rep., 11 (1), 14631. 10.1038/s41598-021-93557-2 Coll M., Piroddi C., ... Voultsiadou E. (2010) - The biodiversity of the Mediterranean Sea: Estimates, patterns, and threats. PLoS ONE, 5 (8), e11842. 10.1371/journal.pone.0011842 Cuadros A., Cheminée A., ... Cardona L. (2017) - The three-dimensional structure of Cymodocea nodosa meadows shapes juvenile fish assemblages at Fornells Bay (Minorca Island). Reg. Stud. Mar. Sci., 14, 93–101. 10.1016/j.rsma.2017.05.011 Díaz-Gil C., Grau A.,... Catalán I.A. (2019) - Changes in the juvenile fish assemblage of a Mediterranean shallow Posidonia oceanica seagrass nursery area after half century. Med. Mar. Sci., 20 (3), 603–615. 10.12681/mms.19510 Garcia-Rubies A., Macpherson E. (1995) - Substrate use and temporal pattern of recruitment in juvenile fishes of the Mediterranean littoral. Mar. Bio., 124. 10.1007/BF00349144 Goetze J.S., Bond T., ... Harvey E.S. (2019) - A field and video analysis guide for diver operated stereo-video. Meth. Eco. Evol., 10 (7), 1083–1090. 10.1111/2041-210X.13189 Gratwicke B., Speight M.R. (2005) - Effects of habitat complexity on Caribbean marine fish assemblages. Mar. Eco. Prog. Ser., 292, 301–310. 10.3354/meps292301 Harmelin-Vivien M.L., Harmelin J.G., Leboulleux V. (1995) - Microhabitat requirements for settlement of juvenile sparid fishes on Mediterranean rocky shores. Hydrobiologia, 300–301 (1), 309–320. 10.1007/BF00024471 Harvey E., Shortis M. (1995) - A system for stereo-video measurement of sub-tidal organisms. Mar. Tech. Soc. J., 29 (4), 10–22. Heck Jr. K.L., Hays G., Orth R.J. (2003) - A Critical Evaluation of the Nursery Role Hypothesis for Seagrass Meadows. Mar. Eco. Prog. Ser., 253, 123–136. 10.3354/meps253123 Hinz H., Reñones O., ... Moranta J. (2019) - Fish nursery value of algae habitats in temperate coastal reefs. PeerJ, 2019 (5), e6797. 10.7717/peerj.6797 Knausgård K.M., Wiklund A., ... Goodwin M. (2022). Temperate fish detection and classification: a deep learning based approach. App. Int., 52(6), 6988–7001. 10.1007/s10489-020-02154-9 Louisy P. (2015). Europe and Mediterranean Marine Fish identification guide, Ulmer. Schramm K.D., Harvey E.S., ... Saunders B. J. (2020) - A comparison of stereo-BRUV, diver operated and remote stereo-video transects for assessing reef fish assemblages. J. Exp. Mar. Bio. Eco., 524, 151273. 10.1016/j.jembe.2019.151273 Ventura D., Jona Lasinio G., Ardizzone G. (2015) - Temporal partitioning of microhabitat use among four juvenile fish species of the genus Diplodus (Pisces: Perciformes, Sparidae). Mar. Eco., 36 (4), 1013–1032. 10.1111/maec.12198 Wang J., Ju L., Wang X. (2011) - Image segmentation using local variation and edge-weighted centroidal Voronoi tessellations. IEEE Trans. Ima. Proc., 20 (11), 3242–3256. 10.1109/TIP.2011.2150237