A review of methods to assess connectivity and dispersal between fish populations in the Mediterranean Sea

Calò, Antonio; Félix-Hackradt, Fabiana Cézar; Garcı́a, Jesús; Hackradt, Carlos Werner; Rocklin, Delphine; Otón, Jorge Treviño; Charton, José Antonio García

doi:10.1080/19475721.2013.840680

Cited by 18 publications

(27 citation statements)

References 180 publications

(193 reference statements)

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Realistic larval traits, such as active swimming, could be also implemented, but only large vertical migrations (outside the surface mixed layer) are expected to significantly change the dispersal schemes (Corell et al, 2012). Nevertheless, little information exists about the behaviour and the spatial distribution of larvae of most organisms (Calò et al, 2013), and even when it is relatively well known, Treml et al (2012) found little impact of biological parameterizations on broad-scale connectivity. Lastly, although near-shore areas are not particularly well resolved by the basin-scale model we used, most patterns are in agreement with regional studies based on dedicated high-resolution models (e.g.…”

Section: Modelling Limitations and Future Developmentsmentioning

confidence: 99%

Linking basin‐scale connectivity, oceanography and population dynamics for the conservation and management of marine ecosystems

Dubois

Rossi

Ser‐Giacomi

et al. 2016

Global Ecology and Biogeography

103

100

View full text Add to dashboard Cite

Aim Assessing the spatial structure and dynamics of marine populations is still a major challenge in ecology. The need to manage marine resources from ecosystem and large‐scale perspectives is recognized, but our partial understanding of oceanic connectivity limits the implementation of globally pertinent conservation planning. Based on a biophysical model for the entire Mediterranean Sea, this study takes an ecosystem approach to connectivity and provides a systematic characterization of broad‐scale larval dispersal patterns. It builds on our knowledge of population dynamics and discusses the ecological and management implications. Location The semi‐enclosed Mediterranean Sea and its marine ecosystems are used as a case study to investigate broad‐scale connectivity patterns and to relate them to oceanography and population dynamics. Methods A flow network is constructed by evenly subdividing the basin into sub‐regions which are interconnected through the transport of larvae by ocean currents. It allows for the computation of various connectivity metrics required to evaluate larval retention and exchange. Results Our basin‐scale model predicts that retention processes are weak in the open ocean while they are significant in the coastal ocean and are favoured along certain coastlines due to specific oceanographic features. Moreover, we show that wind‐driven divergent (convergent, respectively) oceanic regions are systematically characterized by larval sources (sinks, respectively). Finally, although these connectivity metrics have often been studied separately in the literature, we demonstrate they are interrelated under particular conditions. Their integrated analysis facilitates the appraisal of population dynamics, informing both genetic and demographic connectivities. Main conclusions This modelling framework helps ecologists and geneticists to formulate improved hypotheses of population structures and gene flow patterns and to design their sampling strategy accordingly. It is also useful in the implementation and assessment of future protection strategies, such as coastal and offshore marine reserves, by accounting for large‐scale dispersal patterns, a missing component of current ecosystem management.

show abstract

Section: Modelling Limitations and Future Developmentsmentioning

confidence: 99%

Linking basin‐scale connectivity, oceanography and population dynamics for the conservation and management of marine ecosystems

Dubois

Rossi

Ser‐Giacomi

et al. 2016

Global Ecology and Biogeography

103

100

View full text Add to dashboard Cite

show abstract

“…The cross-analysis of bathymetry, marine habitats and fish biomass maps have led to retrieve some hardly surprising facts. Over the last decades, numerous studies have highlighted that fish accumulations are more likely located on sites with complex seascapes (such as rocky reefs and seagrass meadows) than on flat deeper zones [19] [20]. Likewise, the surveys, realised at different seasons in a year, allow to correlate the water temperature with the size of the fishes and their schools [21] [22].…”

Section: Discussionmentioning

confidence: 99%

Measuring fish activities as additional environmental data during a hydrographic survey with a multi-beam echo sounder

Lamouret¹,

Abadie²,

Viala³

et al. 2019

OCEANS 2019 - Marseille

View full text Add to dashboard Cite

The modern multi-beam echo sounders (MBES) are advanced instrumentation for active underwater acoustic surveys that can be boarded on oceanic vessels as well on light crafts. Although their versatility allows scientists to perform various environmental studies, their potential is seldom fully exploited. A single data acquisition cruise is not only able to display the seabed backscatter, but also provide an estimation of the fish activities from an underwater site thanks to water column imagery. This work is aiming at developing some (automatic) signal processing techniques to detect, analyse and classify objects observed in the water column with a focus on fish activities to provide fish accumulation and classification but also some comparative analyses along with the seafloor classification.

show abstract

“…Electronic tagging and tracking fish using archival tags would be the best to explore the contemporaneous population connectivity of A. imberbis (Calò et al, ). Archival tags store oceanographic data continuously, allowing the visualization of trajectories on an intermediate spatial scale during a long time.…”

Section: Possible Experimentsmentioning

confidence: 99%

Social flexibility to balance habitat fragmentation? Insights from the Mediterranean cave‐dwelling cardinalfish Apogon imberbis

Rastorgueff¹

2020

Marine Ecology

View full text Add to dashboard Cite

The Mediterranean cave-dwelling cardinalfish Apogon imberbis shows a surprising panmixia for a brooding species inhabiting a fragmented habitat. This is partly attributed to the plasticity of its aggregative behavior, ranging from solitary to large schools. This plasticity allows this cardinalfish to take advantage of a wide variety of shadowed shelters, ranging from small cracks to large caves, which promotes population connectivity. This paper explores whether social flexibility can be the mechanism behind such behavioral plasticity, and the resulting ecological and evolutionary advantages in fragmented habitats. It also explores the limits of the application of this hypothesis to A. imberbis. Finally, it proposes possible experiments to unravel the origin of the behavioral plasticity and the exceptional connectivity of this cardinalfish.

show abstract

A review of methods to assess connectivity and dispersal between fish populations in the Mediterranean Sea

Cited by 18 publications

References 180 publications

Linking basin‐scale connectivity, oceanography and population dynamics for the conservation and management of marine ecosystems

Linking basin‐scale connectivity, oceanography and population dynamics for the conservation and management of marine ecosystems

Measuring fish activities as additional environmental data during a hydrographic survey with a multi-beam echo sounder

Social flexibility to balance habitat fragmentation? Insights from the Mediterranean cave‐dwelling cardinalfish Apogon imberbis

Contact Info

Product

Resources

About