Suchergebnisse

This study was carried out within the framework of projects DOSMARES (ref. CTM2012-2180-CO3-02) and SCAPA (ref. CTM2013-45089) from the Ministry of Science and Innovation, Spanish Government. S. Romero-Romero was supported by a FPU fellowship (ref. 12/00851) from the Ministry of Education, Culture and Sports

This research was funded by the project Malaspina 2010 Circumnavigation Expedition (Consolider-Ingenio 2010, CSD2008-00077) and cofounded by the Basque Government (Department Deputy of Agriculture, Fishing and Food Policy). We thank Simon Benoit for technical assistance in "Marmap", Maximino Delgado for phytoplankton identification, Angel Borja for useful comments, and the crew of R/V Hesperides and all participants in the Malaspina Expedition for their help and contributions. E.V. was supported by a PhD Scholarship granted by the Inaki Goenaga-Technology Centres Foundation. This is contribution 835 from AZTI Marine Research Division. ; Villarino, E., Watson, J.R., Jönsson, B., Gasol, J.M., Salazar, G., Acinas, S.G., Estrada, M., Massana, R., Logares, R., Giner, C.R., Pernice, M.C., Olivar, M.P., Citores, L., Corell, J., Rodríguez-Ezpeleta, N., Acuña, J.L., Molina-Ramírez, A., González-Gordillo, J.I., Cózar, A., Martí, E., Cuesta, J.A., Agustí, S., Fraile-Nuez, E., Duarte, C.M., Irigoien, X., Chust, G.

This work was financed by the Spanish Government through the project DOSMARES (CTM2010-21810-C03-02, Ministerio de Ciencia e Innovación, Spain). AR is supported by an FPU fellowship (Ref. AP2010-5376, Ministerio de Educación de España, Grant no.AP2010-5376). SG thanks the Iniciativa Científica Milenio P10-033F and Conicyt FB 0002.

5th International Jellyfish Bloom Symposium, 30 May to 3 June 2016, Barcelona.-- 1 page ; Blooms of the salp Thalia democratica are a recurrent feature in many coastal areas where they have significant ecological and societal impacts. To understand the environmental drivers of those blooms in the Catalan Sea, we conducted 8 sampling surveys of T. democratica populations at contrasting seasonal, temperature and chlorophyll conditions. During each survey we used a drifting buoy to track a salp population which we sampled every 30 minutes during a period of three hours, and determined short term variations in the abundances of the different stages. We built a set of different stage-classified population matrix models, each one representing different assumptions about the influence of temperature and chlorophyll on the different stages. The best model was one where only the females were affected by temperature, while matrix elements for the other stages were fixed. Elasticity analysis indicates that females drive the population dynamics through arrested reproduction at high temperatures. Whether this is a direct influence of temperature, or an indirect effect reflecting low food availability remains to be solved. In contrast to previous ideas, our results suggest that it is the female, and not the asexual oozooid, that is responsible for latency periods in salp populations ; Peer Reviewed

This work was financed by the Spanish Government through projects COSTAS (CTM2006-05588/MAR, Ministry of Education and Science) and DOSMARES (CTM2010-21810-C03-02, Ministry of Science and Innovation), and by the Principality of Asturias Government through project FRENTES (IB08-122, FICYT). AR and RGG were supported by a FPU fellowship (ref. AP2010-5376 and AP2008-03992, respectively, Ministerio de Educación de España a) and AFP by a Severo Ochoa FICYT-PCTI fellowship (ref. BP09038, Asturias Regional Government). The funders had no role in study design, data collection and analysis, decision to publish, or preparation of the manuscript.

Ministry of Education and Science, Spanish Government) and FRENTES (IB08-122, FICYT, Government of the Principality of Asturias)

Spanish Ministry of Economy and Competitiveness [CSD2008-00077, CTM2016-78853-R]; European Union, Horizon 2020 [817806, 817578]

8 pages, 4 figures, 1 table, supplementary information https://doi.org/10.1038/s41467-020-19875-7.-- Data sets generated during and/or analyzed during the current study are available at PANGAEA (http://www.pangaea.de). The zooplankton biomass from the Malaspina cruise is available in https://doi.org/10.1594/PANGAEA.922974, the deep-sea zooplankton biomass reviewed is available in https://doi.org/10.1594/PANGAEA.923149, the reviewed carbon flux and respiration are available in https://doi.org/10.1594/PANGAEA.923832, the acoustic backscatter is available in https://doi.org/10.1594/PANGAEA.922619, and the stable isotope data in https://doi.org/10.1594/PANGAEA.919314 ; The biological pump transports organic carbon produced by photosynthesis to the meso- and bathypelagic zones, the latter removing carbon from exchanging with the atmosphere over centennial time scales. Organisms living in both zones are supported by a passive flux of particles, and carbon transported to the deep-sea through vertical zooplankton migrations. Here we report globally-coherent positive relationships between zooplankton biomass in the epi-, meso-, and bathypelagic layers and average net primary production (NPP). We do so based on a global assessment of available deep-sea zooplankton biomass data and large-scale estimates of average NPP. The relationships obtained imply that increased NPP leads to enhanced transference of organic carbon to the deep ocean. Estimated remineralization from respiration rates by deep-sea zooplankton requires a minimum supply of 0.44 Pg C y−1 transported into the bathypelagic ocean, comparable to the passive carbon sequestration. We suggest that the global coupling between NPP and bathypelagic zooplankton biomass must be also supported by an active transport mechanism associated to vertical zooplankton migration ; This study was funded by projects Malaspina (CSD2008-00077), Bathypelagic (CTM2016-78853-R) from the Spanish Ministry of Economy and Competitiveness, and to projects SUMMER (Grant Agreement 817806) and TRIATLAS (Grant Agreement 817578) from the European Union (Horizon 2020 Research and Innovation Programme) ; Peer reviewed