Matschullat Jörg matschul@tu-freiberg.de http://tu-freiberg.de/fakultaet3/mineralogie/geochemie/matschullat 0000-0003-0549-7354 TU Bergakademie Freiberg, Freiberg/Sachsen Roeder Eric Eric.Roeder@ioez.tu-freiberg.de TU Bergakademie Freiberg, Freiberg/Sachsen Adam Sean Mark Peter Sean.Adam@mineral.tu-freiberg.de 0009-0009-8787-706X TU Bergakademie Freiberg, Freiberg/Sachsen Lau Maximilian maximilian.lau@ioez.tu-freiberg.de TU Bergakademie Freiberg, Freiberg/Sachsen 2026 Water and sediment (physico)chemical data from Amazonas lakes, Brazil - rainy and dry seasons 2021 - 2023 dataset bundled publication https://doi.org/10.1594/PANGAEA.974323 2026-02-05T06:40:34 Water (physico)chemical and sediment chemical data from shallow tropical lakes and some piscicultures are available. In 5 subsequent field campaigns in both dry (3x) and rainy (2x) seasons from September 2021 to August 2023, we targeted five lake basins, including a large reservoir (Balbina), and 2 pisciculture locations in Amazonas state, Brazil. The lakes are Caldeirão and Jandira (blackwater), and Grande and Iranduba (whitewater), all on Iranduba peninsula to the WSW of Manaus. The two piscicultural locations are near the town of Rio Preto da Eva, NE from Manaus, and comprise various basins each with location 1 being used for raising young fish and location 2 for the production of edible fish. The purpose of the study serves a) availability of high-quality water and sediment data for this underrepresented region, and b) providing related baselines, c) testing the differences between tropical clearwater, blackwater and whitewater lakes, d) elucidating lake sensitivies particularly to drought phases and seasonal changes at large, and e) to obtain data that allows for improving lake management in the region. Matschullat Jörg matschul@tu-freiberg.de http://tu-freiberg.de/fakultaet3/mineralogie/geochemie/matschullat 0000-0003-0549-7354 Bezerra de Lima R M Coimbra Martins Gilvan de Lima Boijink C Dairiki J K Roeder Eric Eric.Roeder@ioez.tu-freiberg.de Lau Maximilian maximilian.lau@ioez.tu-freiberg.de Adam Sean Mark Peter Sean.Adam@mineral.tu-freiberg.de 0009-0009-8787-706X Souza de Oliveira C T Malheiros Ramos Andrea Plessow Alexander Schwatke Christian 0000-0002-4741-3449 Forsberg Bruce R submitted Water and sediment chemistry of shallow tropical lakes show alert signals Journal of Geophysical Research: Biogeosciences Zug S Licht G Börner E de Souza Mota Edjair 0000-0001-7411-0673 Monteiro Bezerra de Lima R Roeder Eric Eric.Roeder@ioez.tu-freiberg.de Matschullat Jörg matschul@tu-freiberg.de http://tu-freiberg.de/fakultaet3/mineralogie/geochemie/matschullat 0000-0003-0549-7354 2025 Taking the pulse of nature – how robotics and sensors assist in lake and reservoir management journal article Geoscientific Instrumentation, Methods and Data Systems 14(2) https://doi.org/10.5194/gi-14-167-2025 167-181 -60.3013 -59.4607 -3.2937 -1.8799 -59.8621529802038 -2.621251341234781 2021-09-24T00:00:00 2023-08-21T12:36:34 RoBiMo Robotergestütztes Binnengewässer-Monitoring https://tu-freiberg.de/geo/hydro/our-research-projects-and-stipends/robimo-robotergestuetztes-binnengewaesser-monitoring TU Bergakademie Freiberg, Freiberg/Sachsen Bundesministerium für Bildung und Forschung BMBF https://www.bmftr.bund.de https://doi.org/10.13039/501100002347 FKZ 01DN21018 Deutsche Bundesstiftung Umwelt DBU https://www.dbu.de/ https://doi.org/10.13039/100007636 Az 36095/01 4 CC-BY-4.0 Creative Commons Attribution 4.0 International https://creativecommons.org/licenses/by/4.0/ Area/locality | Area | Sample ID | Campaign | Season | Water volume, filtered | Vol filtered | Mass | Total | Nitrogen mass | N | Carbon and nitrogen and sulfur (CNS) element analyzer, Elementar, Vario EL Cube | Carbon mass | C | Nitrogen, total | TN | Carbon, total | TC | Annotation | Temperature, water | Temp | Multiprobe, Eureka Water Probes, Manta+35 | pH | Conductivity, electrolytic | EC | Turbidity (Formazin nephelometric unit) | Turbidity | Oxygen saturation | O2 sat | Oxygen | O2 | Chlorophyll a | Chl a | [mV] | Battery, voltage | Ubat | Sublocation | Location | Depth, top/min | Depth top | Depth, bottom/max | Depth bot | Layer description | Layer | GFD, LLD: 0.15 [wt-%] | Aluminium oxide | Al2O3 | see description in data abstract | PPP, LLD: 0.01 [wt-%] | PPP, LLD: 15 | Arsenic | As | MA-Dig, LLD: 0.06 | PPP, LLD: 1 [wt-%] | Diborate | B2O5 | GFD, LLD: 0.01 [wt-%] | Barium oxide | BaO | PPP, LLD: 20 | Barium | Ba | MA-Dig, LLD: 0.0005 | PPP, LLD: 10 | Bismuth | Bi | Bromine | Br | powder, LLD: 0.04 [wt-%] | Carbon, organic | C org | GFD, LLD: 0.02 [wt-%] | Calcium oxide | CaO | PPP, LLD: 0.005 [wt-%] | Cadmium | Cd | MA-Dig, LLD: 0.000429 | PPP, LLD: 50 | Cerium | Ce | MA-Dig, LLD: 0.00006 | PPP, LLD: 30 | Chloride | Cl | Cobalt | Co | MA-Dig, LLD: 0.000185 | Chromium(III) oxide | Cr2O3 | Chromium | Cr | MA-Dig, LLD: 0.00321 | Caesium | Cs | Copper(II) oxide | CuO | Copper | Cu | MA-Dig, LLD: 0.00425 | MA-Dig, LLD: 0.00004 | Dysprosium | Dy | MA-Dig, LLD: 0.00005 | Erbium | Er | MA-Dig, LLD: 0.00003 | Europium | Eu | PPP, LLD: 0.05 [wt-%] | Fluorine | F | GFD, LLD: 0.009 [wt-%] | Iron oxide, total | FeOT=FeO+0.8998*Fe2O3 | PPP, LLD: 0.0015 [wt-%] | Iron oxide, Fe2O3 | Fe2O3 | Iron oxide, FeO | FeO | Gadolinium | Gd | Hafnium oxide | HfO2 | MA-Dig, LLD: 0.000007 | Holmium | Ho | GFD, LLD: 0.1 [wt-%] | Potassium oxide | K2O | PPP, LLD: 0.002 [wt-%] | Lanthanum | La | MA-Dig, LLD: 0.00002 | Lutetium | Lu | GFD, LLD: 0.05 [wt-%] | Magnesium oxide | MgO | PPP, LLD: 0.012 [wt-%] | GFD, LLD: 0.03 [wt-%] | Manganese oxide | MnO | PPP, LLD: 0.003 [wt-%] | Molybdenum | Mo | powder, LLD: 0.003 [wt-%] | Nitrogen | GFD, LLD: 0.2 [wt-%] | Sodium oxide | Na2O | Niobium | Nb | Neodymium | Nd | Nickel | Ni | MA-Dig, LLD: 0.000658 | GFD, LLD: 0.06 [wt-%] | Phosphorus pentoxide | P2O5 | GFD, LLD: 0.005 [wt-%] | Lead oxide | PbO | Lead | Pb | MA-Dig, LLD: 0.000233 | MA-Dig, LLD: 0.00001 | Praseodymium | Pr | Rubidium | Rb | MA-Dig, LLD: 0.000118 | GFD, LLD: 0.3 [wt-%] | Sulfur trioxide | SO3 | PPP, LLD: 0.0025 [wt-%] | powder, LLD: 0.004 [wt-%] | Sulfur | S | Antimony | Sb | MA-Dig, LLD: 0.00398 | Scandium | Sc | Silicon dioxide | SiO2 | Samarium | Sm | Tin | Sn | PPP, LLD: na | Strontium | Sr | MA-Dig, LLD: 0.000188 | Terbium | Tb | Thorium | Th | MA-Dig, LLD: 0.00009 | Titanium dioxide | TiO2 | PPP, LLD: 0.001 [wt-%] | MA-Dig, LLD: 0.0000132 | Thallium | Tl | Thulium | Tm | Uranium | U | Vanadium oxide | V2O5 | Vanadium | V | MA-Dig, LLD: 0.000084 | Tungsten | W | Yttrium | Y | Ytterbium | Yb | Zinc oxide | ZnO | Zinc | Zn | MA-Dig, LLD: 0.01 | Zirconium dioxide | ZrO2 | Depth of Secchi Disk | z(SD) | Aluminium | Al | Beryllium | Be | Measured at 317.933 nm. | Calcium | Ca | Cl- | Carbon, organic, dissolved | DOC | Carbon, inorganic, dissolved | DIC | Measured at 238.204 nm. | Iron | Fe | Gallium | Ga | Measured at 766.490 nm. | Potassium | K | Lithium | Li | Meassured at 285.213 nm. | Magnesium | Mg | Manganese | Mn | Nitrate | [NO3]- | Measured at 589.592 nm. | Sodium | Na | Sulfate | [SO4]2- | Selenium | Se | Measured at 251 nm. | Silicon | Si | Measured at 407.771 nm. | Tellurium | Te citable Amazon Basin carbon - nitrogen - sulphur (CNS) climatological data dissolved organic carbon (DOC) hydrographical profiles major - minor - trace elements physicochemical parameters Seasonality shallow tropical lakes method10213 method17453 method9315 param102453 param102454 param105740 param106876 param106968 param120823 param130692 param130833 param131415 param134113 param15215 param15373 param1546 param16065 param161471 param161814 param171793 param1720 param179057 param181587 param1825 param1826 param1827 param1828 param185470 param18657 param186962 param187035 param187036 param1883 param191457 param191458 param191459 param191460 param191461 param2136 param2191 param27315 param3 param31579 param4 param501123 param507610 param513699 param520669 param52765 param536321 param54969 param6160 param6203 param674 param675 param677 param678 param679 param681 param682 param683 param684 param685 param686 param687 param688 param689 param690 param691 param692 param693 param694 param695 param696 param697 param699 param700 param701 param702 param703 param704 param705 param706 param707 param708 param709 param717 param73 param735 param764 param79439 param79656 param79660 param79662 param79664 param79665 param79666 param79667 param79668 param79669 param79670 param79671 param79675 param79676 param79677 param79679 param81 param811 param813 param814 param816 param817 param8170 param82 param83 param83610 param84 param85 param86 param87 param88102 param88107 param88113 param88114 param91460 param91606 param92516 param92518 param92519 param99418 param99497 pi10900 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