Zobrazeno 1 - 10
of 226
pro vyhledávání: '"A. O. Sawakuchi"'
Autor:
A. O. Sawakuchi, E. D. Schultz, F. N. Pupim, D. J. Bertassoli, D. F. Souza, D. F. Cunha, C. E. Mazoca, M. P. Ferreira, C. H. Grohmann, I. D. Wahnfried, C. M. Chiessi, F. W. Cruz, R. P. Almeida, C. C. Ribas
Publikováno v:
Nature Communications, Vol 13, Iss 1, Pp 1-15 (2022)
This study found that millennial periods of higher rainfall combined with rising sea level enhanced sediment accumulation in Amazonian rivers valleys. This fuelled synchronous expansion of vegetation adapted to seasonally flooded substrates and its s
Externí odkaz:
https://doaj.org/article/1bc6d3c900604d2d92295e443cc0ec45
Autor:
D. H. Souza, M. Parra, I. del Rio, A. O. Sawakuchi, F. N. Pupim, J. S. Hernández-González, S. Gomez
Publikováno v:
Frontiers in Earth Science, Vol 10 (2022)
The Tatacoa Desert (TD) is a Cenozoic basin between the Central and Eastern Cordilleras in the southern Colombian Andes. Its sparse vegetation and Badlands morphology resemble a semi-arid environment, despite receiving ∼1,300 mm of mean annual prec
Externí odkaz:
https://doaj.org/article/d34f4e3d807444ff9eeace24c457a9c5
Autor:
K. R. de Araújo, H. O. Sawakuchi, D. J. Bertassoli Jr., A. O. Sawakuchi, K. D. da Silva, T. B. Vieira, N. D. Ward, T. S. Pereira
Publikováno v:
Biogeosciences, Vol 16, Pp 3527-3542 (2019)
The Belo Monte hydropower complex located in the Xingu River is the largest run-of-the-river (ROR) hydroelectric system in the world and has one of the highest energy production capacities among dams. Its construction received significant media atten
Externí odkaz:
https://doaj.org/article/f3a208d10f8e46e299ba22d5908c71dc
Autor:
D. J. Bertassoli Jr, A. O. Sawakuchi, C. M. Chiessi, E. Schefuß, G. A. Hartmann, C. Häggi, F. W. Cruz, M. Zabel, M. M. McGlue, R. A. Santos, F. N. Pupim
Publikováno v:
Geophysical Research Letters, Vol 46, Iss 15, Pp 9013-9022 (2019)
Abstract Late Holocene hydroclimate variations have been extensively recognized in Amazonia, but the effects of such changes on riverine discharge within the Amazon lowlands are still poorly understood. We investigated a sediment core covering circa
Externí odkaz:
https://doaj.org/article/ae7312bcf25d421e92804836af2bc383
Autor:
S. Sun, E. Schefuß, S. Mulitza, C. M. Chiessi, A. O. Sawakuchi, M. Zabel, P. A. Baker, J. Hefter, G. Mollenhauer
Publikováno v:
Biogeosciences, Vol 14, Iss 9, Pp 2495-2512 (2017)
The Amazon River transports large amounts of terrestrial organic carbon (OCterr) from the Andean and Amazon neotropical forests to the Atlantic Ocean. In order to compare the biogeochemical characteristics of OCterr in the fluvial sediments from the
Externí odkaz:
https://doaj.org/article/23f8f1e8538e493cba659a0ce9c2aecb
Autor:
A. O. Sawakuchi, G. A. Hartmann, H. O. Sawakuchi, F. N. Pupim, D. J. Bertassoli, M. Parra, J. L. Antinao, L. M. Sousa, M. H. Sabaj Pérez, P. E. Oliveira, R. A Santos, J. F. Savian, C. H. Grohmann, V. B. Medeiros, M. M. McGlue, D. C. Bicudo, S. B. Faustino
Publikováno v:
Scientific Drilling, Vol 20, Pp 21-32 (2015)
The Xingu River is a large clearwater river in eastern Amazonia and its downstream sector, known as the Volta Grande do Xingu ("Xingu Great Bend"), is a unique fluvial landscape that plays an important role in the biodiversity, biogeochemistry and pr
Externí odkaz:
https://doaj.org/article/855f1bb780c2448188d4ca605443a63d
Autor:
M.-P. Ledru, W. U. Reimold, D. Ariztegui, E. Bard, A. P. Crósta, C. Riccomini, A. O. Sawakuchi
Publikováno v:
Scientific Drilling, Vol 20, Pp 33-39 (2015)
The Colônia Deep Drilling Project held its first International Continental Scientific Drilling Program (ICDP) workshop in September 2014 at the University of São Paulo (Brazil). Twenty-seven experts from six countries discussed the feasibility and
Externí odkaz:
https://doaj.org/article/fffbed539dd749a1a5935bd38b696466
Autor:
A. Govin, C. M. Chiessi, M. Zabel, A. O. Sawakuchi, D. Heslop, T. Hörner, Y. Zhang, S. Mulitza
Publikováno v:
Climate of the Past, Vol 10, Iss 2, Pp 843-862 (2014)
We investigate changes in the delivery and oceanic transport of Amazon sediments related to terrestrial climate variations over the last 250 ka. We present high-resolution geochemical records from four marine sediment cores located between 5 and 12°
Externí odkaz:
https://doaj.org/article/8edb76fd2f0844e682ae48dc3df2aab9
Autor:
Jonathan Schenk, Henrique O. Sawakuchi, Anna K. Sieczko, Gustav Pajala, David Rudberg, Emelie Hagberg, Kjell Fors, Hjalmar Laudon, Jan Karlsson, David Bastviken
Publikováno v:
Frontiers in Earth Science, Vol 9 (2021)
Methane (CH4) is an important component of the carbon (C) cycling in lakes. CH4 production enables carbon in sediments to be either reintroduced to the food web via CH4 oxidation or emitted as a greenhouse gas making lakes one of the largest natural
Externí odkaz:
https://doaj.org/article/0b9abcb7a6a44fa7965e8e6c0eaab13e
Autor:
Henrique O. Sawakuchi, David Bastviken, Alex Enrich-Prast, Nicholas D. Ward, Plínio B. Camargo, Jeffrey E. Richey
Publikováno v:
Frontiers in Environmental Science, Vol 9 (2021)
The global development of hydropower dams has rapidly expanded over the last several decades and has spread to historically non-impounded systems such as the Amazon River’s main low land tributaries in Brazil. Despite the recognized significance of
Externí odkaz:
https://doaj.org/article/bf947d40ae644f0a904b03abb7e8833f