Please use this identifier to cite or link to this item:
http://hdl.handle.net/10553/122023
DC Field | Value | Language |
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dc.contributor.author | Salas-Collado, Laura | en_US |
dc.contributor.author | Gómez, May | en_US |
dc.contributor.author | Dugdale, Richard C. | en_US |
dc.contributor.author | Martínez, Ico | en_US |
dc.contributor.author | Blasco, Dolors | en_US |
dc.contributor.author | Barber, Richard T. | en_US |
dc.contributor.author | Wilkerson, Frances P. | en_US |
dc.contributor.author | Packard, Theodore T. | en_US |
dc.date.accessioned | 2023-04-24T14:24:14Z | - |
dc.date.available | 2023-04-24T14:24:14Z | - |
dc.date.issued | 2023 | en_US |
dc.identifier.isbn | 978-84-9042-477-3 | en_US |
dc.identifier.uri | http://hdl.handle.net/10553/122023 | - |
dc.description.abstract | New Production (NP) is limited by NO3−, NH4+, and light (hv). Here we use a model derived from Michaelis-Menten kinetics to calculate NP from euphotic-zone phytoplankton NR activity and hv. NP = − ∂[NO3−]/ ∂t = [NR] ∗ [hv]/(Klt + [hv]) We calculated Peruvian upwelling NP at 15° S (C-Line) during austral fall, March-April-May 1977 from R/V WECOMA data of the Coastal Upwelling Ecosystem Analysis program. NP, at 50% hv, ranged from 1.37 μM C h−1 at the upwelling centre, to 0.15 μMC h−1 9 km downstream, to 0.37 μM C h−1 57 km further downstream over the Peru Trench. It compared well with 14C carbon productivity measurements ranging from 0.29 - 2.65 μMC h−1 and 0.04 - 1.37 μM C h−1 for the 6 h (gross) and 24 h (net) productivity. Oceanographic conditions during April 1977 made the C-Line an ideal site to compare spring 1977 NP with fall 1976 NP data collected by the R/V Eastward. Those 1976 NP values ranged slightly higher (0.15 to 3.49 μM C h−1) than those we found. The surface temperature background at the upwelling-centre in April 1977 reached 16.41 °C whereas in September 1976 it was 14.07 °C. For the C-Line, NO3− stayed above 10 μM, and NH4 + stayed below 0.1 μM. C-Line Chlorophyll, averaging 1.39 μg L−1 in April 1977, was lower than what it was for the same stations 6 months earlier (3.85 μg L−1). NR, averaging 0.045 μM h−1 for C-Line stations in April 1977, was a fourth of what it was 6 months earlier in September 1976 (0.20 μM h−1). In conclusion, overall NP for austral fall 1977, in nitrogen units, ranged from 22.6 to 206.8 nM N h−1. In carbon units, median NP in austral fall was only 42% (0.76 μM C h−1) of NP in austral spring (1.82 μM C h−1). | en_US |
dc.language | eng | en_US |
dc.publisher | Servicio de Publicaciones y Difusión Científica de la Universidad de Las Palmas de Gran Canaria (ULPGC) | en_US |
dc.source | Abstracts Volume VIII International Symposium on Marine Sciences, July 2022 / coordinación, María Esther Torres Padrón, p. 183 | en_US |
dc.subject | 251007 Oceanografía física | en_US |
dc.subject | 251002 Oceanografía química | en_US |
dc.subject | 241708 Fitobiología | en_US |
dc.subject.other | Primary production | en_US |
dc.subject.other | Nitrogen uptake | en_US |
dc.subject.other | Nitrate reductase | en_US |
dc.subject.other | Phytoplankton | en_US |
dc.title | Modelling new production from nitrate reductase activity and light in the Peru current upwelling | en_US |
dc.type | info:eu-repo/semantics/conferenceObject | en_US |
dc.type | Conference poster | en_US |
dc.relation.conference | VIII International Symposium on Marine Sciences (ISMS 2022) | en_US |
dc.description.firstpage | 183 | en_US |
dc.investigacion | Ciencias | en_US |
dc.type2 | Póster de congresos | en_US |
dc.description.numberofpages | 1 | en_US |
dc.utils.revision | Sí | en_US |
dc.identifier.ulpgc | Sí | en_US |
dc.contributor.buulpgc | BU-BAS | en_US |
dc.contributor.buulpgc | BU-BAS | en_US |
dc.contributor.buulpgc | BU-BAS | en_US |
dc.contributor.buulpgc | BU-BAS | en_US |
item.fulltext | Con texto completo | - |
item.grantfulltext | open | - |
crisitem.author.dept | GIR ECOAQUA: Ecofisiología de Organismos Marinos | - |
crisitem.author.dept | IU de Investigación en Acuicultura Sostenible y Ec | - |
crisitem.author.dept | Departamento de Biología | - |
crisitem.author.dept | GIR ECOAQUA: Ecofisiología de Organismos Marinos | - |
crisitem.author.dept | IU de Investigación en Acuicultura Sostenible y Ec | - |
crisitem.author.dept | GIR ECOAQUA: Ecofisiología de Organismos Marinos | - |
crisitem.author.dept | IU de Investigación en Acuicultura Sostenible y Ec | - |
crisitem.author.orcid | 0000-0002-7396-6493 | - |
crisitem.author.orcid | 0000-0002-7676-2066 | - |
crisitem.author.orcid | 0000-0002-5880-1199 | - |
crisitem.author.parentorg | IU de Investigación en Acuicultura Sostenible y Ec | - |
crisitem.author.parentorg | IU de Investigación en Acuicultura Sostenible y Ec | - |
crisitem.author.parentorg | IU de Investigación en Acuicultura Sostenible y Ec | - |
crisitem.author.fullName | Gómez Cabrera, María Milagrosa | - |
crisitem.author.fullName | Martínez Sánchez, Ico | - |
crisitem.author.fullName | Packard, Theodore Train | - |
crisitem.event.eventsstartdate | 06-07-2022 | - |
crisitem.event.eventsenddate | 08-07-2022 | - |
Appears in Collections: | Póster de congreso |
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