Internal Cycle of Seminars at IMEDEA (CISI) consist on a cycle of seminar presentations given mainly by doctoral students, masters and junior postdocs, although it is not closed to other staff, such as visitors and staff, that take place every Friday from 4:00 p.m. to 4:30 p.m in the seminar room os IMEDEA.

This represents a great opportunity to learn more about the research carried out at the Institute and to bring those with less experience , the chance of increasing their presentation and public speaking skills. Afterwards, there will be soft drinks and beers for all attendees 😉 We strongly encourage you to participate. Join us!

Do you want to participate with a presentation? Please contact the organising team:

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Featured Seminars
22/02/2024
Internal Cycle of Seminars IMEDEA - Amaya Álvarez- «Deep Learning inside the fish market»
  Abstract In this presentation, we will explore the various tasks undertaken by the Fish Ecology Lab at the Palma Fish Market since 2018. Our focus lies in automating the processes employed for extracting fish length measurements. The dynamic distribution of fish lengths plays a crucial role, not only in making informed short-term operational decisions within a fishery co-management framework but also in providing input for traditional fishery models that illuminate mid- and long-term trends in exploited stocks. Traditionally, the estimation of fish length in most fisheries has been a manual endeavor, resulting in precise measurements at the individual fish level. However, due to the high cost and inefficiency associated with supervised sampling, the sample size tends to be limited. Consequently, the precision of population-level estimates often falls short, and biases may arise, especially when adequately stratified sampling programs are economically unfeasible. Conversely, the application of machine learning and artificial intelligence in fisheries science presents a promising avenue for large-scale, unbiased sampling of fish catches. The Fish Ecology Lab has been working with the daily images recived from the auction of the fish market to extract information on various commercial species such as hake, dolphinfish, and red shrimp. This presentation will specifically focus into the deep learning techniques employed for each of these cases.  

Previous Seminars

Internal Cycle os Seminars IMEDEA - Julia Castro «Posidonia oceanica meadows as nursery habitats for fish»

15/02/2024

Asbtract

Seagrass meadows provide essential ecosystem functions and services. They serve as nursery habitats for fish, and the structural complexity is a key factor influencing this function. Despite their ecological importance, seagrasses are being degraded worldwide at an alarming rate, leading to a significant loss of habitat structure. In response to this trend, restoration projects have been developed in recent years, aiming to recover both habitat structure and associated functions We assessed the recovery of habitat structure and the associated nursery function within a restored Posidonia oceanica meadow. Additionally, we conducted habitat selection experiments with two species, Diplodus annularis and Symphodus tinca, to evaluate if they actively select seagrass habitats based on structural complexity. Our results revealed that, despite the presence of some fish species in the restored area, neither the structural complexity nor the nursery function had fully recovered. In the choice experiments, both species exhibited a clear affinity for seagrass habitats over unvegetated areas, demonstrating their ability to actively selected habitats based on visual cues. However, the response in occupancy patterns to increasing seagrass complexity was species-specific.Understanding how juvenile fish respond to changes in seagrass habitat features is crucial for quantifying the nursery service provision and for identifying effective measures to accelerate the restoration process.

 

Link to the video here