The ecology of deep sublittoral populations of Mediterranean gorgonians

The ecology of deep sublittoral populations of Mediterranean gorgonians

Memoria de tesis doctoral presentada por Andrea Gori para optar al grado de Doctor por la Universitat de Barcelona (UB), realizada bajo la dirección del Dr. Josep Maria Gili Sardá del Institut de Ciències del Mar (ICM-CSIC) y del Dr. Sergio Rossi Heras.-- 155 pages

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Main Author: Gori, Andrea
Other Authors: Gili, Josep Maria
Format: tesis doctoral biblioteca
Published: Universidad de Barcelona
Online Access:http://hdl.handle.net/10261/101033
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spelling dig-icm-es-10261-1010332018-12-21T11:47:28Z The ecology of deep sublittoral populations of Mediterranean gorgonians L'ecologia de les poblacions sublitorals profundes de les gorgònies mediterrànies Gori, Andrea Gili, Josep Maria Rossi, Sergio Memoria de tesis doctoral presentada por Andrea Gori para optar al grado de Doctor por la Universitat de Barcelona (UB), realizada bajo la dirección del Dr. Josep Maria Gili Sardá del Institut de Ciències del Mar (ICM-CSIC) y del Dr. Sergio Rossi Heras.-- 155 pages The understanding of Mediterranean gorgonian ecology increased significantly in the last decades. However, although Mediterranean sublittoral gorgonians are known to be present from shallow to deep waters, the research focused, up to this date, almost only on the shallow gorgonian populations located from the surface to approximately 40 m depth. Intermediate depths, particularly coastal rocky bottoms in the 40-150 m depth range, has remained mostly unexplored until now. This thesis addressed a first description of the ecology of deep sublittoral populations of Mediterranean gorgonians by means of a multidisciplinary approach combining classical methods, new technologies and modern genetic and biochemical analyses. The first chapter presented the results of applying quantitative analysis to underwater video transects performed with Remotely Operated Vehicles (ROV), in order to address the spatial distribution patterns of gorgonian populations. The second chapter combined the analysis of photographic images obtained by ROV, with scanning electronic microscope (SEM) analysis of gorgonian sclerites and histological and genetic analysis, all in order to investigate the morphological variability of gorgonians along a depth gradient. The third chapter offered a combination of classical methods for population size and spatial structure analysis that have been innovatively applied to ROV video transects to address the study of gorgonian populations over a larger bathymetrical scale. Finally, in the fourth chapter the microscopy and histology techniques for the study of gorgonian reproductive cycle were coupled with biochemical analysis of tissue composition (carbohydrate, protein and lipid) in order to determine the energetic state of gorgonian colonies and its relation to the reproductive cycle, as well as the analyses of the stable isotopes and fatty acids composition to get some insight into the trophic ecology of the gorgonians throughout the year and in a depth comparison. Although scientific research often leads to few answers and to much more new questions, we hope that the results of this thesis may serve as a stimulus for future studies focused on hard-bottom benthic communities located at intermediate depths, which have remained fairly ignored for a long time. This thesis was supported by the Consejo Superior de Investigaciones Cientificas (CSIC) through a I3P scholarship and employment contract (Ref. I3P-BPD2005), as well as by the 2003-2004 project INTE-RREG between Catalonia - Languedoc Roussillon ‘‘Pirineus Mediterrànis: La muntanya que uneix’’ of the Consejo Superior de Investigaciones Cientificas (CSIC) and of the Centre National de la Recherche Scientifique (CNRS), the 2009-2013 European project LIFE+INDEMARES “Inventario y designación de la red natura 2000 en áreas marinas del estado español” (LIFE07/NAT/E/000732) of the European Union, and the 2010-2012 project BENTOLARV “Viabilidad larvaria como factor clave en la dinámica de las poblaciones de suspensívoros bentónicos” of the Ministerio de Ciencia e Innovación Peer Reviewed 2011 2014-08-22T09:08:56Z tesis doctoral http://purl.org/coar/resource_type/c_db06 http://hdl.handle.net/10261/101033 open Universidad de Barcelona
institution ICM ES
collection DSpace
country España
countrycode ES
component Bibliográfico
access En linea
databasecode dig-icm-es
tag biblioteca
region Europa del Sur
libraryname Biblioteca del ICM España
description Memoria de tesis doctoral presentada por Andrea Gori para optar al grado de Doctor por la Universitat de Barcelona (UB), realizada bajo la dirección del Dr. Josep Maria Gili Sardá del Institut de Ciències del Mar (ICM-CSIC) y del Dr. Sergio Rossi Heras.-- 155 pages
author2 Gili, Josep Maria
author_facet Gili, Josep Maria
Gori, Andrea
format tesis doctoral
author Gori, Andrea
spellingShingle Gori, Andrea
The ecology of deep sublittoral populations of Mediterranean gorgonians
author_sort Gori, Andrea
title The ecology of deep sublittoral populations of Mediterranean gorgonians
title_short The ecology of deep sublittoral populations of Mediterranean gorgonians
title_full The ecology of deep sublittoral populations of Mediterranean gorgonians
title_fullStr The ecology of deep sublittoral populations of Mediterranean gorgonians
title_full_unstemmed The ecology of deep sublittoral populations of Mediterranean gorgonians
title_sort ecology of deep sublittoral populations of mediterranean gorgonians
publisher Universidad de Barcelona
url http://hdl.handle.net/10261/101033
work_keys_str_mv AT goriandrea theecologyofdeepsublittoralpopulationsofmediterraneangorgonians
AT goriandrea lecologiadelespoblacionssublitoralsprofundesdelesgorgoniesmediterranies
AT goriandrea ecologyofdeepsublittoralpopulationsofmediterraneangorgonians
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