Figure 1
Location of the sampling site. a. Amazon basin, b. Xingu river basin, c. Location of the floodplain lake on Arapujá island (XC1-02) and Xingu Ria (XC-03). Maps adapted from Sawakuchi et al. (2015)Sawakuchi, A.O., Hartmann, G.A., Sawakuchi, H.O., Pupim, F.N., Bertassoli, D.J., Parra, M., Antinao, J.L., Sousa, L.M., PérezSabaj, M.H., Oliveira, P.E., Santos, R.A., Savian, J.F., Grohmann, C.H., Medeiros, V.B., Mcglue, M.M., Bicudo, D.C. & Faustino, S.B. 2015. The Volta Grande do Xingu: reconstruction of past environments and forecasting of future scenarios of a unique Amazonian fluvial landscape. Scientific Drilling 3: 1-12., Almeida et al. (2016)Almeida, C.A., de, Coutinho, A.C., Esquerdo, J.C.D.M., Adami, M., Venturieri, A., Diniz, C.G., Dessay, N., Dirieux, L. & Gomes, A.R. 2016. High spatial resolution land use and land cover mapping of the Brazilian Legal Amazon in 2008 using Landsat-5/TM and MODIS data. Acta Amazonica 46 (3): 291-302. and Bertassoli et al. (2017)Bertassoli, D.J.Jr., Sawakuchi, A.O., Sawakuchi, H.O., Pupim, F.N., Hartmann, G.A., McGlue, M.M., Chiessi, C.M., Zabel, M., Schefuß, E., Pereira, T.S., Santos, R.A., Faustino, S.B., Oliveira, P.E. & Bicudo, D.C. 2017. The fate of carbon in sediments of the Xingu and Tapajós clearwater rivers, eastern Amazon. Frontiers in Marine Science 44 (4): 1-14..
Figures 2-32
Holocene diatoms from Xingu river, Brazil. Diatoms of Xingu core. 2-3. Aulacoseira cf. crassipunctata Krammer. 4-6. Rimoneis sp. 7-8. Staurosira sp. 9-10. Staurosirella acidophila Almeida, Wetzel, Morales, Ector & Bicudo. 11. Staurosirella cf. acutirostrata (Metzeltin & Lange-Bertalot) Almeida & Wetzel. 12-13. Staurosirella dubia (Grunow) E.A.Morales & K.M.Manoylov. 14-15. Staurosirella subcapitata (Frenguelli) Morales. 16. Eunotia camelus Ehrenberg. 17. Eunotia longicamelus Costa, Wetzel, Lange-Bertalot, Ector & Bicudo. 18-19. Eunotia rabenhorstii var. monodon Cleve & Grunow. 20. Eunotia superbidens Lange-Bertalot. 21-22. Eunotia sp. 23. Placoneis exigua (W. Gregory) Mereschkovsky. 24-25. Gomphonema auritum Braun ex Kützing. 26. Gomphonema acuminatum Ehrenberg. 27-28. Gomphonema brasiliensoides Metzeltin, Lange-Bertalot & García-Rodríguez. 29. Gomphonema curvipedatum Kobayasi ex Osada. 30. Gomphonema pseudosphaerophorum Kobayasi. 31-32. Gomphonema sp. Scale bars = 10 µm.