
iMARES
@iMARES_group
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The iMARES (Integrated Marine Ecosystem Assessments) is a marine research group from the @ICMCSIC founded in 2022. π¦@imares-group.bsky.social
Joined January 2024
@ICMCSIC @LuciaEspasandin @Fran_seabird @ValeSbra @CollMonton π Climate change is already reshaping Mediterranean fisheries. π With indicators like MTC and MTR, we can anticipate risks and opportunities. π‘ Time to act: science, management, and adaptation. #FutureOfFisheries #BlueTransformation
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@ICMCSIC @LuciaEspasandin @Fran_seabird @ValeSbra @CollMonton β οΈ Species like sardine, hake, and Norway lobster are declining. π Fewer catches, lower income. π But others like red shrimp and anchovy are on the rise. #CommercialSpecies #ClimateAndSea.
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@ICMCSIC @LuciaEspasandin @Fran_seabird @ValeSbra @CollMonton π Each port tells a different story. In some places, things are improving. In others, theyβre getting worse. π― Fisheries management must be local and adaptive. #LocalAdaptation #SpatialEcology
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@ICMCSIC @LuciaEspasandin @Fran_seabird @ValeSbra @CollMonton π’ Not all fleets are affected equally by climate change:. π΄ Bottom trawlers and longliners benefit from warm-water species. π‘ Surface longliners and small-scale fisheries are losing cold-water species. #SmallScaleFisheries #Resilience.
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@ICMCSIC @LuciaEspasandin @Fran_seabird @ValeSbra @CollMonton π Cephalopods (like octopus) are the big winners. π¦ Crustaceans are struggling. π Fish show a clear loss of cold-affinity species. #MarineBiodiversity #ClimateImpacts
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@ICMCSIC @LuciaEspasandin @Fran_seabird @ValeSbra @CollMonton π Over 23 years, we saw clear trends:. π‘οΈ Mean Temperature of Catch (MTC): +0.68β―Β°C/decade. πΆ Mean Temperature of Revenue (MTR): +0.58β―Β°C/decade. β‘οΈ Weβre catching more warm-affinity speciesβ¦ and earning more from them too. #OceanWarming #Fisheries
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@ICMCSIC @LuciaEspasandin @Fran_seabird @ValeSbra @CollMonton π‘ We introduced a new indicator: the Mean Temperature of Revenue (MTR). It shows how climate change affects not just what we catch, but also which species bring in the most money. #BlueEconomy #FisheriesScience
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@ICMCSIC @LuciaEspasandin @Fran_seabird @ValeSbra @CollMonton π‘οΈ Sea temperatures have risen between +0.35β―Β°C- +0.37 ΒΊC per decade. π This has led to more warm-water species (like red shrimp) and fewer cold-water ones (like sardine or hake). #Tropicalization #Deborealization
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ππ₯ The sea is warmingβ¦ and thatβs changing what we catch and how much itβs worth. π In the NW Mediterranean, we analyzed 23 years of data to understand how climate change is reshaping fisheries. #ClimateChange #Fisheries #Mediterranean. @ICMCSIC.@LuciaEspasandin
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ππ¬ Climate Impact Hotspots Data is an open-access resource by iMARES to explore climate-driven changes in global marine biodiversity. High-res data for research & conservation planning. π₯ Access & download:. π #OpenData #MarineScience #ClimateChange
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@ICMCSIC @CollMonton @ValeSbra @JoanNavarro_ICM @Joan_Gimenez π Want to read the full study?.π π©βπ¬ Authors: Mar Pardo et al. #MarineScience.
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@ICMCSIC @CollMonton @ValeSbra @JoanNavarro_ICM @Joan_Gimenez βAre young tuna causing the drop in sardines and anchovies?. π§ Not really. π These fish are eaten less by tuna now than in the past.π Tuna adjust their diet based on whatβs available.π Many other factors, like climate and jellyfish blooms, also affect fish populations.
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@ICMCSIC @CollMonton @ValeSbra @JoanNavarro_ICM @Joan_Gimenez π¬ What do isotopes tell us?. π In 2018β19, tuna had a narrower feeding range.π Their diet became more specialized.π Ξ΄15N increased with fish size. #IsotopeAnalysis #MarineBiology
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@ICMCSIC @CollMonton @ValeSbra @JoanNavarro_ICM @Joan_Gimenez π Over 30 years:.β¬οΈ Sardines and anchovies declined.β¬οΈ Horse mackerels increased.π Juvenile tuna adapt to whatβs available.π§ Theyβre flexible feeders, not picky eaters!. #Fisheries
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@ICMCSIC @CollMonton @ValeSbra @JoanNavarro_ICM @Joan_Gimenez π½οΈ What do they eat today?. π Mostly fishβespecially horse mackerels (Trachurus spp.).π¦ Crustaceans.π¦ Cephalopods.π Sardines and anchovies are now less common in their diet. #TrophicEcology #FoodWebs
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@ICMCSIC @CollMonton @ValeSbra @JoanNavarro_ICM @Joan_Gimenez π§ͺ We analyzed 137 tuna stomachs from 3 time periods:.π
1989, 2012β14, and 2018β19.π¬ Using stomach content + stable isotope analysis. π― Goal: understand how their diet has changed over time. #MarineResearch #Ecology
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@ICMCSIC @CollMonton @ValeSbra @JoanNavarro_ICM @Joan_Gimenez π Atlantic bluefin tuna are top predators in the ocean. π Theyβve been heavily overfished, but thanks to conservation efforts. theyβre making a comeback!π. What does this mean for the rest of the ecosystem?.#OceanConservation #Biodiversity
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π¨Paper alert!.π What do young Atlantic bluefin tuna eat in the Mediterranean?.π We studied their diet in the Gulf of Valencia over 30 years. π Have their habits changed? Are they affecting sardines and anchovies?. π Letβs dive in!.@ICMCSIC.#BluefinTuna #MedSea #MarineScience
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@ICMCSIC @MariaBas16 9οΈβ£ π Want to dive deeper? . Read the full article here π #OpenScience #MarineArchaeology.
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