Diatom assemblages determined by differential phase interference microscopy of sediment core POS287_06-2G
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| Language: | en |
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PANGAEA
2026
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| author | Abrantes, Fatima F Santana, André Gebara, Livia Gil, Isabelle M |
| author_facet | Abrantes, Fatima F Santana, André Gebara, Livia Gil, Isabelle M |
| collection | Datos científicos de ciencias marinas y ambientales |
| contents | The Iberian Margin, located in the mid-latitude North Atlantic at the western edge of the European continent, is a key region for climate and oceanographic research. The Portuguese western coast marks the northernmost boundary of the Canary Current upwelling system, experiencing seasonal wind-driven coastal upwelling from May to September. Eastern Boundary Upwelling Systems (EBUS) are among the most productive regions in the global ocean. They play a vital role in climate regulation and support both local and global fisheries. As part of the ICW3P project (PTDC/CTA-CLI/2884/2021) 'Impact of climate warming in the coastal upwelling system and primary production off Portugal: a study linking classical and emerging proxies', this study presents multi-proxy records from three inner-shelf sediment sequences. The project aimed to evaluate different nutrient sources and paleoceanographic features of the Iberian Margin and to reconstruct primary productivity and phytoplankton community variability over the past 1,000 years. This dataset presents diatom assemblages from a sediment record where these microfossils are best preserved, collected off the mouth of the Douro River (POS287-06G), in the north-western region of the Portuguese continental shelf, using a gravity coring system during the Poseidon cruise POS287 in 2002. This analysis was conducted at the EMSO-Gold Optical Laboratory at IPMA during 2022 and 2023, using differential phase interference microscopy, Eclipse 80i. |
| format | Dataset Open Access |
| id | pangaea_https___doi_org_10_1594_PANGAEA_989413 |
| institution | PANGAEA |
| language | en |
| publishDate | 2026 |
| publisher | PANGAEA |
| record_format | pangaea |
| spellingShingle | Diatom assemblages determined by differential phase interference microscopy of sediment core POS287_06-2G Abrantes, Fatima F Santana, André Gebara, Livia Gil, Isabelle M Achnanthes clevei; Achnanthes delicatula; Achnanthes hungarica; Achnanthes lanceolata; Achnanthes lanceolata var. rostrata; Achnanthes rostrata; Achnanthes stroemii; Actinocyclus octonarius; Actinocyclus sp.; Actinoptychus senarius; Amphitetras antediluviana; Amphora cf. pediculus; Amphora commutata; Amphora spp.; Amphora veneta; Aneumastus cf. tusculus; Aneumastus pseudotusculus; Asteromphalus flabellatus; Aulacoseira ambigua; Aulacoseira cf. granulata; Aulacoseira sp.; Auliscus sculptus; Azpeitia nodulifer; Brachysira cf. brebissonii; Caloneis aff. silicula; Caloneis bacillum; Caloneis leptosoma; Caloneis sp.; Campyloneis grevillei; Campyloneis grevillei var. argus; Cavinula maculata; Chaetoceros spp.; coastal upwelling; Cocconeis cf. disculus; Cocconeis cf. fluviatilis; Cocconeis cf. neodiminuta; Cocconeis cf. pediculus; Cocconeis cf. placentula; Cocconeis cf. pseudolineata; Cocconeis costata; Cocconeis diminuta; Cocconeis grata; Cocconeis placentula; Cocconeis scutellum; Cocconeis spp.; Cocconeis stauroneiformis; Coscinodiscus asteromphalus; Coscinodiscus cf. curvatulus; Coscinodiscus marginatus; Coscinodiscus oculus-iridis; Coscinodiscus radiatus; Coscinodiscus sp.; Ctenophora pulchella; Cyclostephanos cf. Invisitatus; Cyclostephanos sp.; Cyclotella sp.; Cyclotella striata; Cymatopleura cf. librile; Cymatosira belgica; Cymbella affinis; Cymbella cf. affinis; Cymbella cf. helvetica; Cymbella cf. tumida; Cymbella naviculiformis; Cymbella parva; Cymbella spp.; Cymbella tumida; Cymbella turgidula; Cymbopleura cf. amphicephala; Delphineis surirella; Denticula tenuis; DEPTH, sediment/rock; Depth, sediment/rock, bottom/maximum; Depth, sediment/rock, top/minimum; Diatom; Diatoma anceps; Diatoma cf. ehrenbergii; Diatoma sp.; Diatom assemblage; Diatoma vulgaris; Diatoma vulgaris var. grande; Differential Phase Interference Microscope (DPI), ECLIPSE, 80i [x400 magnification]; Dimeregramma minor; Diploneis bombus; Diploneis didyma; Diploneis elliptica; Diploneis pseudovalis; Diploneis smithii; Diploneis sp.; Ditylum brightwellii; Encyonema cf. lange-bertalotii; Encyonema cf. procerum; Encyonema spp.; Encyonopsis microcephala; Epithemia adnata; Epithemia cf. adnata; Epithemia cf. sorex; Epithemia spp.; Eunotia pectinalis; Eunotia spp.; Eunotogramma laeve; Fragilaria capucina; Fragilaria cf. construens; Fragilaria cf. rinoi; Fragilaria cf. vaucheriae; Fragilaria construens; Fragilaria mesolepta; Fragilaria spp.; Fragilaria tenera; Fragilaria vaucheriae; Fragilariforma bicapitata; Fragilariforma cf. constricta; Fragilariforma sp.; Fragilariforma virescens; Frustulia sp.; Frustulia vulgaris; GC; Gomphoneis olivaceum; Gomphonema acuminatum; Gomphonema aff. tergestinum; Gomphonema angustum; Gomphonema cf. americobtusatum; Gomphonema cf. angustatum; Gomphonema cf. gracile; Gomphonema cf. ibericum; Gomphonema cf. minutum; Gomphonema cf. parvulum; Gomphonema cf. rhombicum; Gomphonema cf. tergestinum; Gomphonema cf. ventricosum; Gomphonema clavatum; Gomphonema lagenula; Gomphonema olivaceum; Gomphonema parvulum; Gomphonema rhombicum; Gomphonema sarcophagus; Gomphonema spp.; Gomphonema truncatum; Gomphonema vibrio; Grammatophora cf. hamulifera; Grammatophora marina; Grammatophora oceanica; Grammatophora sp.; Gravity corer; Gyrosigma acuminatum; Gyrosigma cf. attenuatum; Gyrosigma sp.; Halamphora sp.; Hannaea arcus; Hantzschia amphioxys; Hantzschia cf. distinctepunctata; Hemidiscus cuneiformis; Hippodonta hungarica; Iberian margin; ICW3P; Impact of climate warming in the coastal upwelling system and primary production off Portugal: a study linking classical and emergent proxies; Last millennium; Lemnicola hungarica; Leptocylindrus spp.; Licmophora sp.; Luticola cf. ventricosa; Luticola mutica; Luticola nivalis; Luticola sp.; Luticola stigma; Lyrella hennedyi; Martyana schulzii; Melosira sp.; Melosira varians; Meridion circulare; Meridion circulare var. constrictum; Meridion sp.; microscopy; Navicula aff. pennata; Navicula cf. viridula; Navicula decussis; Navicula digitoradiata; Navicula palpebralis; Navicula radiosa; Navicula salinarum; Navicula slesvicensis; Navicula spp.; Navicula tripunctata; Navicula trivialis; Neidium alpinum; Neidium cf. dubium; Neidium sp.; Nitzschia aff. sociabilis; Nitzschia amphibia; Nitzschia capitellata; Nitzschia cf. amphibia; Nitzschia cf. lacuum; Nitzschia cf. linearis; Nitzschia cf. palea; Nitzschia microcephala; Nitzschia sicula; Nitzschia sinuata var. tabellaria; Nitzschia spp.; Nitzschia subacicularis; Odontella aurita; Odontella sp.; Odontidium cf. mesodon; Odontidium hyemale; Odontidium sp.; PALEO 1; paleoproductivity; Paralia sulcata; Petroneis granulata; Pinnularia borealis; Pinnularia cf. aljustrelica; Pinnularia cf. brebissonii; Pinnularia cf. divergens; Pinnularia cf. divergentissima; Pinnularia cf. saprophila; Pinnularia cf. subcapitata; Pinnularia cf. viridis; Pinnularia major; Pinnularia microstauron; Pinnularia spp.; Plagiogramma staurophorum; Planothidium amphibium; Planothidium frequentissimum; Planothidium sheathii; Pleurosigma sp.; Podosira stelligera; Portuguese Margin; POS287; POS287_06-2G; POS287_06-3G; Poseidon; Psammodiscus nitidus; Psammothidium aff. rossii; Pseudostaurosira brevistriata; Pseudostaurosira sp.; Pseudotriceratium punctatum; Reimeria sinuata; Rhopalodia gibba; Rhopalodia musculus; Rhopalodia sp.; Roperia tesselata; Sample code/label; Sellaphora bacillum; Sellaphora pupula; Sellaphora sp.; Skeletonema sp.; Stauroforma cf. exiguiformis; Stauroneis anceps; Stauroneis anceps var. siberica; Stauroneis cf. anceps; Stauroneis phoenicenteron; Stauroneis sp.; Staurophora tackei; Staurosira binodis; Staurosira cf. elliptica; Staurosirella cf. pinnata; Staurosirella leptostauron; Staurosirella sp.; Stephanocyclus meneghinianus; Stephanodiscus sp.; Stephanopyxis sp.; Surirella angusta; Surirella cf. brebissonii; Surirella cf. crumena; Surirella cf. ovalis; Surirella linearis; Surirella sp.; Surirella tenera; Synedra cf. famelica; Synedra cf. ulna; Synedra ulna; Tabellaria fenestrata; Tabellaria flocculosa; Tabellaria sp.; Thalassionema nitzschioides; Thalassiosira cf. anguste-lineata; Thalassiosira cf. decipiens; Thalassiosira eccentrica; Thalassiosira lineata; Thalassiosira oestrupii; Thalassiosira pacifica; Thalassiosira sp.; Trachyneis aspera; Triceratium alternans; Tryblionella apiculata; Tryblionella cf. compressa; Tryblionella cf. navicularis; Tryblionella coarctata; Tryblionella gracilis; Tryblionella granulata; Tryblionella punctata; Tryblionella sp.; Ulnaria acus The Iberian Margin, located in the mid-latitude North Atlantic at the western edge of the European continent, is a key region for climate and oceanographic research. The Portuguese western coast marks the northernmost boundary of the Canary Current upwelling system, experiencing seasonal wind-driven coastal upwelling from May to September. Eastern Boundary Upwelling Systems (EBUS) are among the most productive regions in the global ocean. They play a vital role in climate regulation and support both local and global fisheries. As part of the ICW3P project (PTDC/CTA-CLI/2884/2021) 'Impact of climate warming in the coastal upwelling system and primary production off Portugal: a study linking classical and emerging proxies', this study presents multi-proxy records from three inner-shelf sediment sequences. The project aimed to evaluate different nutrient sources and paleoceanographic features of the Iberian Margin and to reconstruct primary productivity and phytoplankton community variability over the past 1,000 years. This dataset presents diatom assemblages from a sediment record where these microfossils are best preserved, collected off the mouth of the Douro River (POS287-06G), in the north-western region of the Portuguese continental shelf, using a gravity coring system during the Poseidon cruise POS287 in 2002. This analysis was conducted at the EMSO-Gold Optical Laboratory at IPMA during 2022 and 2023, using differential phase interference microscopy, Eclipse 80i. |
| title | Diatom assemblages determined by differential phase interference microscopy of sediment core POS287_06-2G |
| topic | Achnanthes clevei; Achnanthes delicatula; Achnanthes hungarica; Achnanthes lanceolata; Achnanthes lanceolata var. rostrata; Achnanthes rostrata; Achnanthes stroemii; Actinocyclus octonarius; Actinocyclus sp.; Actinoptychus senarius; Amphitetras antediluviana; Amphora cf. pediculus; Amphora commutata; Amphora spp.; Amphora veneta; Aneumastus cf. tusculus; Aneumastus pseudotusculus; Asteromphalus flabellatus; Aulacoseira ambigua; Aulacoseira cf. granulata; Aulacoseira sp.; Auliscus sculptus; Azpeitia nodulifer; Brachysira cf. brebissonii; Caloneis aff. silicula; Caloneis bacillum; Caloneis leptosoma; Caloneis sp.; Campyloneis grevillei; Campyloneis grevillei var. argus; Cavinula maculata; Chaetoceros spp.; coastal upwelling; Cocconeis cf. disculus; Cocconeis cf. fluviatilis; Cocconeis cf. neodiminuta; Cocconeis cf. pediculus; Cocconeis cf. placentula; Cocconeis cf. pseudolineata; Cocconeis costata; Cocconeis diminuta; Cocconeis grata; Cocconeis placentula; Cocconeis scutellum; Cocconeis spp.; Cocconeis stauroneiformis; Coscinodiscus asteromphalus; Coscinodiscus cf. curvatulus; Coscinodiscus marginatus; Coscinodiscus oculus-iridis; Coscinodiscus radiatus; Coscinodiscus sp.; Ctenophora pulchella; Cyclostephanos cf. Invisitatus; Cyclostephanos sp.; Cyclotella sp.; Cyclotella striata; Cymatopleura cf. librile; Cymatosira belgica; Cymbella affinis; Cymbella cf. affinis; Cymbella cf. helvetica; Cymbella cf. tumida; Cymbella naviculiformis; Cymbella parva; Cymbella spp.; Cymbella tumida; Cymbella turgidula; Cymbopleura cf. amphicephala; Delphineis surirella; Denticula tenuis; DEPTH, sediment/rock; Depth, sediment/rock, bottom/maximum; Depth, sediment/rock, top/minimum; Diatom; Diatoma anceps; Diatoma cf. ehrenbergii; Diatoma sp.; Diatom assemblage; Diatoma vulgaris; Diatoma vulgaris var. grande; Differential Phase Interference Microscope (DPI), ECLIPSE, 80i [x400 magnification]; Dimeregramma minor; Diploneis bombus; Diploneis didyma; Diploneis elliptica; Diploneis pseudovalis; Diploneis smithii; Diploneis sp.; Ditylum brightwellii; Encyonema cf. lange-bertalotii; Encyonema cf. procerum; Encyonema spp.; Encyonopsis microcephala; Epithemia adnata; Epithemia cf. adnata; Epithemia cf. sorex; Epithemia spp.; Eunotia pectinalis; Eunotia spp.; Eunotogramma laeve; Fragilaria capucina; Fragilaria cf. construens; Fragilaria cf. rinoi; Fragilaria cf. vaucheriae; Fragilaria construens; Fragilaria mesolepta; Fragilaria spp.; Fragilaria tenera; Fragilaria vaucheriae; Fragilariforma bicapitata; Fragilariforma cf. constricta; Fragilariforma sp.; Fragilariforma virescens; Frustulia sp.; Frustulia vulgaris; GC; Gomphoneis olivaceum; Gomphonema acuminatum; Gomphonema aff. tergestinum; Gomphonema angustum; Gomphonema cf. americobtusatum; Gomphonema cf. angustatum; Gomphonema cf. gracile; Gomphonema cf. ibericum; Gomphonema cf. minutum; Gomphonema cf. parvulum; Gomphonema cf. rhombicum; Gomphonema cf. tergestinum; Gomphonema cf. ventricosum; Gomphonema clavatum; Gomphonema lagenula; Gomphonema olivaceum; Gomphonema parvulum; Gomphonema rhombicum; Gomphonema sarcophagus; Gomphonema spp.; Gomphonema truncatum; Gomphonema vibrio; Grammatophora cf. hamulifera; Grammatophora marina; Grammatophora oceanica; Grammatophora sp.; Gravity corer; Gyrosigma acuminatum; Gyrosigma cf. attenuatum; Gyrosigma sp.; Halamphora sp.; Hannaea arcus; Hantzschia amphioxys; Hantzschia cf. distinctepunctata; Hemidiscus cuneiformis; Hippodonta hungarica; Iberian margin; ICW3P; Impact of climate warming in the coastal upwelling system and primary production off Portugal: a study linking classical and emergent proxies; Last millennium; Lemnicola hungarica; Leptocylindrus spp.; Licmophora sp.; Luticola cf. ventricosa; Luticola mutica; Luticola nivalis; Luticola sp.; Luticola stigma; Lyrella hennedyi; Martyana schulzii; Melosira sp.; Melosira varians; Meridion circulare; Meridion circulare var. constrictum; Meridion sp.; microscopy; Navicula aff. pennata; Navicula cf. viridula; Navicula decussis; Navicula digitoradiata; Navicula palpebralis; Navicula radiosa; Navicula salinarum; Navicula slesvicensis; Navicula spp.; Navicula tripunctata; Navicula trivialis; Neidium alpinum; Neidium cf. dubium; Neidium sp.; Nitzschia aff. sociabilis; Nitzschia amphibia; Nitzschia capitellata; Nitzschia cf. amphibia; Nitzschia cf. lacuum; Nitzschia cf. linearis; Nitzschia cf. palea; Nitzschia microcephala; Nitzschia sicula; Nitzschia sinuata var. tabellaria; Nitzschia spp.; Nitzschia subacicularis; Odontella aurita; Odontella sp.; Odontidium cf. mesodon; Odontidium hyemale; Odontidium sp.; PALEO 1; paleoproductivity; Paralia sulcata; Petroneis granulata; Pinnularia borealis; Pinnularia cf. aljustrelica; Pinnularia cf. brebissonii; Pinnularia cf. divergens; Pinnularia cf. divergentissima; Pinnularia cf. saprophila; Pinnularia cf. subcapitata; Pinnularia cf. viridis; Pinnularia major; Pinnularia microstauron; Pinnularia spp.; Plagiogramma staurophorum; Planothidium amphibium; Planothidium frequentissimum; Planothidium sheathii; Pleurosigma sp.; Podosira stelligera; Portuguese Margin; POS287; POS287_06-2G; POS287_06-3G; Poseidon; Psammodiscus nitidus; Psammothidium aff. rossii; Pseudostaurosira brevistriata; Pseudostaurosira sp.; Pseudotriceratium punctatum; Reimeria sinuata; Rhopalodia gibba; Rhopalodia musculus; Rhopalodia sp.; Roperia tesselata; Sample code/label; Sellaphora bacillum; Sellaphora pupula; Sellaphora sp.; Skeletonema sp.; Stauroforma cf. exiguiformis; Stauroneis anceps; Stauroneis anceps var. siberica; Stauroneis cf. anceps; Stauroneis phoenicenteron; Stauroneis sp.; Staurophora tackei; Staurosira binodis; Staurosira cf. elliptica; Staurosirella cf. pinnata; Staurosirella leptostauron; Staurosirella sp.; Stephanocyclus meneghinianus; Stephanodiscus sp.; Stephanopyxis sp.; Surirella angusta; Surirella cf. brebissonii; Surirella cf. crumena; Surirella cf. ovalis; Surirella linearis; Surirella sp.; Surirella tenera; Synedra cf. famelica; Synedra cf. ulna; Synedra ulna; Tabellaria fenestrata; Tabellaria flocculosa; Tabellaria sp.; Thalassionema nitzschioides; Thalassiosira cf. anguste-lineata; Thalassiosira cf. decipiens; Thalassiosira eccentrica; Thalassiosira lineata; Thalassiosira oestrupii; Thalassiosira pacifica; Thalassiosira sp.; Trachyneis aspera; Triceratium alternans; Tryblionella apiculata; Tryblionella cf. compressa; Tryblionella cf. navicularis; Tryblionella coarctata; Tryblionella gracilis; Tryblionella granulata; Tryblionella punctata; Tryblionella sp.; Ulnaria acus |
| url | https://doi.org/10.1594/PANGAEA.989413 |