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Monteiro M, Pardal MÂ, Azeiteiro UM, Pereira SC, Vaz N, Primo AL, Ramirez-Romero E, Molinero JC, Marques SC. Climate-driven shifts in decapod larvae assemblages in a temperate estuary. MARINE ENVIRONMENTAL RESEARCH 2024; 198:106526. [PMID: 38723300 DOI: 10.1016/j.marenvres.2024.106526] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/07/2024] [Revised: 04/19/2024] [Accepted: 04/26/2024] [Indexed: 06/11/2024]
Abstract
The study examines the complex impact of climatic patterns, driven by the North Atlantic Oscillation (NAO), on regional climate, hydrology, and sea surface temperatures. Focused on the period from 2003 to 2012, the research specifically investigates the influence of thermal variability on decapod larval communities. Monthly zooplanktonic sampling conducted at the Mondego Estuary, Portugal, entrance over a decade revealed the prevalence of Carcinus maenas, Diogenes pugilator, and Pachigrapsus marmoratus larvae. These assemblages displayed notable interannual and seasonal fluctuations, often corresponding with changes in sea surface temperatures. Significant system shifts around 2007, instigated by the large-scale NAO, led to subsequent modifications in sea surface temperature and decapod larvae communities' dynamics. Post-2007, there was an upward trajectory in both species' abundance and richness. Phenologically during the former period, the community exhibited two abundance peaks, with the earlier peak occurring sooner, attributed to heightened temperatures instead of the unique peak exhibited before 2007. The research further elucidated the occurrences of Marine Heatwaves (MHW) in the region, delving into their temporal progression influenced by the NAO. Although water temperature emerged as a crucial factor influencing decapod larvae communities annually and seasonally, the study did not observe discernible impacts of MHW events on these communities. These communities represent essential trophic links and are crucial for the survival success of adult decapods. Given the rapid pace of climate change and increasing temperatures, it is imperative to assess whether these environmental shifts, particularly in thermal conditions, affect these meroplanktonic communities.
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Affiliation(s)
- Marta Monteiro
- Centre for Environmental and Marine Studies (CESAM), Department of Biology, University of Aveiro, Campus Universitario de Santiago, 3810-193, Aveiro, Portugal; MARE- Marine and Environmental Sciences Centre/ARNET - Aquatic Research Network, School of Tourism and Maritime Technology, Polytechnic of Leiria, Portugal; Centre for Functional Ecology - Science for People & the Planet (CFE), Associate Laboratory TERRA, Department of Life Sciences, University of Coimbra, Calçada Martim de Freitas, 3000-456, Coimbra, Portugal.
| | - Miguel Ângelo Pardal
- Centre for Functional Ecology - Science for People & the Planet (CFE), Associate Laboratory TERRA, Department of Life Sciences, University of Coimbra, Calçada Martim de Freitas, 3000-456, Coimbra, Portugal
| | - Ulisses Miranda Azeiteiro
- Centre for Environmental and Marine Studies (CESAM), Department of Biology, University of Aveiro, Campus Universitario de Santiago, 3810-193, Aveiro, Portugal
| | - Susana Cardoso Pereira
- Centre for Environmental and Marine Studies (CESAM), Department of Physics, University of Aveiro, Campus Universitário de Santiago, 3810-193, Aveiro, Portugal
| | - Nuno Vaz
- Centre for Environmental and Marine Studies (CESAM), Department of Physics, University of Aveiro, Campus Universitário de Santiago, 3810-193, Aveiro, Portugal
| | - Ana Lígia Primo
- Centre for Functional Ecology - Science for People & the Planet (CFE), Associate Laboratory TERRA, Department of Life Sciences, University of Coimbra, Calçada Martim de Freitas, 3000-456, Coimbra, Portugal
| | - Eduardo Ramirez-Romero
- Instituto de Ciencias Marinas de Andalucía, ICMAN, CSIC, República Saharaui, 4, Puerto Real, Cadiz, 11519, Spain
| | | | - Sónia Cotrim Marques
- MARE- Marine and Environmental Sciences Centre/ARNET - Aquatic Research Network, School of Tourism and Maritime Technology, Polytechnic of Leiria, Portugal; Centre for Functional Ecology - Science for People & the Planet (CFE), Associate Laboratory TERRA, Department of Life Sciences, University of Coimbra, Calçada Martim de Freitas, 3000-456, Coimbra, Portugal
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Hjelset AM, Danielsen HEH, Westgaard JI, Agnalt AL. Taxonomic and genetic confirmed findings of snow crab (Chionoecetes opilio) larvae in the Barents Sea. Polar Biol 2021. [DOI: 10.1007/s00300-021-02946-w] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
AbstractThe snow crab (Chionoecetes opilio) is an Arctic cold-water species native to the northwestern Atlantic Ocean and the northern Pacific Ocean. During the recent decades, a population has established in the Barents Sea. Several aspects of the snow crabs’ biology in this area have not been described, including time of hatching, intermoult duration of the different larval stages and larval distribution. Insight into the early-life stages might increase the understanding of the population's dynamics and further spreading in the Barents Sea as well as inform basis for making monitoring and management decisions. The present study investigated the presence and developmental stage of snow crab larva in plankton samples obtained in the central Barents Sea during a research survey in June and July 2019. Presence of snow crab larvae was confirmed through taxonomic and genetic identification. All larvae were identified as zoea I, which gives an indication of the timing of the hatching period. Morphological measurements coincide well with those reported in studies from the species native distribution range. No larvae of native Hyas spp. were found and overlap in temporal and spatial distribution is discussed. The study provides important information for development of further research into the biology of the snow crab in the Barents Sea.
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