taxonID	type	format	identifier	references	title	description	created	creator	contributor	publisher	audience	source	license	rightsHolder	datasetID
03CA87E1EA45FF8DFE35BC09FE39500D.taxon	http://purl.org/dc/dcmitype/StillImage	image/png	https://zenodo.org/record/16968395/files/figure.png	https://doi.org/10.5281/zenodo.16968395	Fig. 7–12. Cocconeis cf. mascarenica Riaux-Gobin & Compère. SV areolae with no axial rows (7, 9), SV areolae with one marginal row of larger areolae (10 arrow), SV areolae with axial rows (12), SV internal view with undulated SVVC edge (11 arrowhead), RV in internal view with very slightly undulated to straight edge (8 arrowhead) and marginal rim (8 arrow). Scale bars: 2 µm (7–12).	Fig. 7–12. Cocconeis cf. mascarenica Riaux-Gobin & Compère. SV areolae with no axial rows (7, 9), SV areolae with one marginal row of larger areolae (10 arrow), SV areolae with axial rows (12), SV internal view with undulated SVVC edge (11 arrowhead), RV in internal view with very slightly undulated to straight edge (8 arrowhead) and marginal rim (8 arrow). Scale bars: 2 µm (7–12).	2025-12-31	Riaux-Gobin, Catherine;Saenz-Agudelo, Pablo;Coste, Michel;Jordan, Richard W.;Criobe-Uar, René Galzin		Zenodo	biologists	Riaux-Gobin, Catherine;Saenz-Agudelo, Pablo;Coste, Michel;Jordan, Richard W.;Criobe-Uar, René Galzin			
03CA87E1EA45FF8DFE35BC09FE39500D.taxon	http://purl.org/dc/dcmitype/StillImage	image/png	https://zenodo.org/record/16968397/files/figure.png	https://doi.org/10.5281/zenodo.16968397	Fig. 13–18. Cocconeis sp. SV external views, with a slightly elliptic sternum (13, 14), detail of the SV areolae with marginal short slits (15 arrowhead), possible RV in internal view with RVVC undulated edge (17 arrowheads in insert), RV in external view (18), SV of an individual from Hao (16). Scale bars: 2 µm (13–14, 16–18), 200 nm (15).	Fig. 13–18. Cocconeis sp. SV external views, with a slightly elliptic sternum (13, 14), detail of the SV areolae with marginal short slits (15 arrowhead), possible RV in internal view with RVVC undulated edge (17 arrowheads in insert), RV in external view (18), SV of an individual from Hao (16). Scale bars: 2 µm (13–14, 16–18), 200 nm (15).	2025-12-31	Riaux-Gobin, Catherine;Saenz-Agudelo, Pablo;Coste, Michel;Jordan, Richard W.;Criobe-Uar, René Galzin		Zenodo	biologists	Riaux-Gobin, Catherine;Saenz-Agudelo, Pablo;Coste, Michel;Jordan, Richard W.;Criobe-Uar, René Galzin			
03CA87E1EA48FF8CFECBBF79FE855213.taxon	http://purl.org/dc/dcmitype/StillImage	image/png	https://zenodo.org/record/16968399/files/figure.png	https://doi.org/10.5281/zenodo.16968399	Fig. 19–22. Cocconeis cf. molesta Kützing. SV external views with a narrow straight sternum (19– 20) and a small central area (20 arrowhead), RV external view with a 2/3 valve wide fascia (21 arrowheads), in internal view, with the fascia (22 arrowheads) and slightly bent helictoglossae (22 arrow). Scale bars: 3 µm (20), 2 µm (19, 21–22).	Fig. 19–22. Cocconeis cf. molesta Kützing. SV external views with a narrow straight sternum (19– 20) and a small central area (20 arrowhead), RV external view with a 2/3 valve wide fascia (21 arrowheads), in internal view, with the fascia (22 arrowheads) and slightly bent helictoglossae (22 arrow). Scale bars: 3 µm (20), 2 µm (19, 21–22).	2025-12-31	Riaux-Gobin, Catherine;Saenz-Agudelo, Pablo;Coste, Michel;Jordan, Richard W.;Criobe-Uar, René Galzin		Zenodo	biologists	Riaux-Gobin, Catherine;Saenz-Agudelo, Pablo;Coste, Michel;Jordan, Richard W.;Criobe-Uar, René Galzin			
03CA87E1EA48FF8CFECBBF79FE855213.taxon	http://purl.org/dc/dcmitype/StillImage	image/png	https://zenodo.org/record/16968401/files/figure.png	https://doi.org/10.5281/zenodo.16968401	Fig. 23–26. Cocconeis cf. diaphana W.Smith. RV external views (23–25) with a fascia reaching both margins (23), RV apex in external view with areolae present (25), RV internal view (26). Scale bars: 3 µm (23, 26), 2 µm (24–25).	Fig. 23–26. Cocconeis cf. diaphana W.Smith. RV external views (23–25) with a fascia reaching both margins (23), RV apex in external view with areolae present (25), RV internal view (26). Scale bars: 3 µm (23, 26), 2 µm (24–25).	2025-12-31	Riaux-Gobin, Catherine;Saenz-Agudelo, Pablo;Coste, Michel;Jordan, Richard W.;Criobe-Uar, René Galzin		Zenodo	biologists	Riaux-Gobin, Catherine;Saenz-Agudelo, Pablo;Coste, Michel;Jordan, Richard W.;Criobe-Uar, René Galzin			
03CA87E1EA48FF8CFECBBF79FE855213.taxon	http://purl.org/dc/dcmitype/StillImage	image/png	https://zenodo.org/record/16968403/files/figure.png	https://doi.org/10.5281/zenodo.16968403	Fig. 27–30. Cocconeis cf. diaphana W.Smith. SV external view with a 135° diagonal pattern (27 white lines), and very small central area (27 arrowhead), SV supplementary striae (28 arrow) and a marginal continuous row of areolae perpendicular to the SV margin (28 arrowhead). Apex with open SVVC (29 ellipse), SVVC with straight edge (30 arrowhead). Scale bars: 3 µm (27–28), 1 µm (29–30).	Fig. 27–30. Cocconeis cf. diaphana W.Smith. SV external view with a 135° diagonal pattern (27 white lines), and very small central area (27 arrowhead), SV supplementary striae (28 arrow) and a marginal continuous row of areolae perpendicular to the SV margin (28 arrowhead). Apex with open SVVC (29 ellipse), SVVC with straight edge (30 arrowhead). Scale bars: 3 µm (27–28), 1 µm (29–30).	2025-12-31	Riaux-Gobin, Catherine;Saenz-Agudelo, Pablo;Coste, Michel;Jordan, Richard W.;Criobe-Uar, René Galzin		Zenodo	biologists	Riaux-Gobin, Catherine;Saenz-Agudelo, Pablo;Coste, Michel;Jordan, Richard W.;Criobe-Uar, René Galzin			
03CA87E1EA49FF8CFDC0BD7EFB7B5346.taxon	http://purl.org/dc/dcmitype/StillImage	image/png	https://zenodo.org/record/16968405/files/figure.png	https://doi.org/10.5281/zenodo.16968405	Fig. 31–34. Planothidium mathurinense Riaux-Gobin & Al-Handal. SV external views with quadriseriate striae, large fascia in one hemivalve, and largely elliptical sternum (31, 33). RV external views (32, 34). Scale bars: 2 µm (31, 33), 1 µm (32, 34).	Fig. 31–34. Planothidium mathurinense Riaux-Gobin & Al-Handal. SV external views with quadriseriate striae, large fascia in one hemivalve, and largely elliptical sternum (31, 33). RV external views (32, 34). Scale bars: 2 µm (31, 33), 1 µm (32, 34).	2025-12-31	Riaux-Gobin, Catherine;Saenz-Agudelo, Pablo;Coste, Michel;Jordan, Richard W.;Criobe-Uar, René Galzin		Zenodo	biologists	Riaux-Gobin, Catherine;Saenz-Agudelo, Pablo;Coste, Michel;Jordan, Richard W.;Criobe-Uar, René Galzin			
03CA87E1EA49FF8CFDC0BD7EFB7B5346.taxon	http://purl.org/dc/dcmitype/StillImage	image/png	https://zenodo.org/record/16968409/files/figure.png	https://doi.org/10.5281/zenodo.16968409	Fig. 35–40. Planothidium rodriguense Riaux-Gobin & Compère. SV in external view (35–36, 38) with a largely elliptical and concave sternum (35), delicate SV striae bi-seriated on margin. RV in external view (37, 39–40) with delicate and partly irregular biseriate striae (up to rarely triseriate on margin). Scale bars: 2 (35, 37, 39), 1 µm (36, 38, 40).	Fig. 35–40. Planothidium rodriguense Riaux-Gobin & Compère. SV in external view (35–36, 38) with a largely elliptical and concave sternum (35), delicate SV striae bi-seriated on margin. RV in external view (37, 39–40) with delicate and partly irregular biseriate striae (up to rarely triseriate on margin). Scale bars: 2 (35, 37, 39), 1 µm (36, 38, 40).	2025-12-31	Riaux-Gobin, Catherine;Saenz-Agudelo, Pablo;Coste, Michel;Jordan, Richard W.;Criobe-Uar, René Galzin		Zenodo	biologists	Riaux-Gobin, Catherine;Saenz-Agudelo, Pablo;Coste, Michel;Jordan, Richard W.;Criobe-Uar, René Galzin			
03CA87E1EA49FF8EFDC8BCB3FD11511E.taxon	http://purl.org/dc/dcmitype/StillImage	image/png	https://zenodo.org/record/16968411/files/figure.png	https://doi.org/10.5281/zenodo.16968411	Fig. 41. Non-metric Multidimensional Scaling (NMDS) performed on the presence-absence of Achnanthales and Olifantiella diatom taxa observed in Mangareva and Hao islands (see supplementary material). Within different biotopes [upper diagram, green = epiphyte (E), red = diverse (D), blue = epizoic (Z)], along different localities [bottom diagram, red = Gatavake Bay (G), blue = Rikitea (R), kaki = Hao (H), green = Totegegie motu (M), violet = pearl oyster farm, subtidal samples (S)].	Fig. 41. Non-metric Multidimensional Scaling (NMDS) performed on the presence-absence of Achnanthales and Olifantiella diatom taxa observed in Mangareva and Hao islands (see supplementary material). Within different biotopes [upper diagram, green = epiphyte (E), red = diverse (D), blue = epizoic (Z)], along different localities [bottom diagram, red = Gatavake Bay (G), blue = Rikitea (R), kaki = Hao (H), green = Totegegie motu (M), violet = pearl oyster farm, subtidal samples (S)].	2025-12-31	Riaux-Gobin, Catherine;Saenz-Agudelo, Pablo;Coste, Michel;Jordan, Richard W.;Criobe-Uar, René Galzin		Zenodo	biologists	Riaux-Gobin, Catherine;Saenz-Agudelo, Pablo;Coste, Michel;Jordan, Richard W.;Criobe-Uar, René Galzin			
03CA87E1EA49FF8EFDC8BCB3FD11511E.taxon	http://purl.org/dc/dcmitype/StillImage	image/png	https://zenodo.org/record/16968395/files/figure.png	https://doi.org/10.5281/zenodo.16968395	Fig. 7–12. Cocconeis cf. mascarenica Riaux-Gobin & Compère. SV areolae with no axial rows (7, 9), SV areolae with one marginal row of larger areolae (10 arrow), SV areolae with axial rows (12), SV internal view with undulated SVVC edge (11 arrowhead), RV in internal view with very slightly undulated to straight edge (8 arrowhead) and marginal rim (8 arrow). Scale bars: 2 µm (7–12).	Fig. 7–12. Cocconeis cf. mascarenica Riaux-Gobin & Compère. SV areolae with no axial rows (7, 9), SV areolae with one marginal row of larger areolae (10 arrow), SV areolae with axial rows (12), SV internal view with undulated SVVC edge (11 arrowhead), RV in internal view with very slightly undulated to straight edge (8 arrowhead) and marginal rim (8 arrow). Scale bars: 2 µm (7–12).	2025-12-31	Riaux-Gobin, Catherine;Saenz-Agudelo, Pablo;Coste, Michel;Jordan, Richard W.;Criobe-Uar, René Galzin		Zenodo	biologists	Riaux-Gobin, Catherine;Saenz-Agudelo, Pablo;Coste, Michel;Jordan, Richard W.;Criobe-Uar, René Galzin			
