Citation:

PANGAEA.968794 (DOI registration in progress)

Name: Charcoal concentration of sediment core LMAHA-18 from lake Mahasarika, northern Madagascar
Published: 2024
License: https://creativecommons.org/licenses/by/4.0/
Keywords: isotope; Lake sediment; macroscopic charcoal; Madagascar; Magnetic susceptibility; Sediment core; δ13C analysis

Always quote citation above when using data! You can download the citation in several formats below.

RIS Citation BibTeX Citation Text Citation Facebook TwitterShow Map Google Earth

Abstract:

The datasets provided here correspond to sedimentary charcoal counts, magnetic susceptibility measurements, and δ13C isotopic measurements obtained from a lacustrine sediment core recovered from Lake Maharasika in Montagne d'Ambre (northern Madagascar, 1,073 m asl). Fieldwork has been carried out in August 2018. The sediment core LMAHA-18 was taken from the central and deepest part of the lake (7 m water depth; 12.53509S, 49.17701E). Core LMAHA-18 was sampled with a Livingstone piston sediment corer operated from a small platform settled on two rubber boats. Using sampling tubes of ca. 5 cm diameter and 120 cm length, a total of 6 sections of about 100 cm sediment length were sampled with overlaps of 10-50 cm length. Preserved in aluminium tubes for transport to the laboratory, sediment was extruded from each aluminium tube and split into two sister cores, LMAHA-18a and LMAHA-18b. Each sister core was stored under cool (4°C) and dark conditions at the laboratory facilities (LMAHA-18a at the Friedrich-Schiller-University Jena and LMAHA-18b at the University of Goettingen, Germany).

For extraction of charcoal particles, 1 cm3 of sediment was taken every cm along the LMAHA-18 core. Each sample was soaked in a 3% NaP2O4 solution plus bleach for several hours to deflocculate the sediment and oxidise organic matter. The samples were sieved through a 160 μm mesh and the carbon particles were counted using a x40 magnification stereomicroscope.

Keyword(s):

isotope; Lake sediment; macroscopic charcoal; Madagascar; Magnetic susceptibility; Sediment core; δ13C analysis

Related to:

Montade, Vincent; Bremond, Laurent; Teixeira, Helena; Kasper, Thomas; Daut, Gerhard; Rouland, Sylvie; Rasoamanana, Elysée; Ramavovolona, Perle; Favier, Charly; Arnaud, Fabien; Radespiel, Ute; Behling, Hermann (2024): Montane rainforest dynamics under changes in climate and human impact during the past millennia in northern Madagascar. Royal Society Open Science, 11(8), 230930, https://doi.org/10.1098/rsos.230930

Funding:

Deutsche Forschungsgemeinschaft, Bonn (DFG), grant/award no. BE 2116/30: Demographic fluctuations in dynamic landscapes: the integration of molecular and paleoecological evidence in a primate model opens a validated window into the past

Coverage:

Latitude: -12.535090 * Longitude: 49.177010

Minimum DEPTH, sediment/rock: 0.00500 m * Maximum DEPTH, sediment/rock: 4.77103 m

Event(s):

LMAHA-18 * Latitude: -12.535090 * Longitude: 49.177010 * Lake water depth: 7 m * Location: Madagascar * Method/Device: Core (CORE)

Parameter(s):

#	Name	Short Name	Unit	Principal Investigator	Method/Device	Comment
1	DEPTH, sediment/rock	Depth sed	m	Montade, Vincent		Geocode
2	AGE	Age	ka BP	Montade, Vincent		Geocode
3	Charcoal concentration	Charcoal	#/cm³	Montade, Vincent	Stereomicroscope, Leica [40x magnification]

License:

Creative Commons Attribution 4.0 International (CC-BY-4.0)

Status:

Curation Level: Enhanced curation (CurationLevelC)

Size:

470 data points

Data

Download dataset as tab-delimited text — use the following character encoding:

1 Depth sed [m]	2 Age [ka BP]	3 Charcoal [#/cm³]
0.00500	-0.067765000	0
0.01500	-0.067075000	0
0.02500	-0.066380000	0
0.03500	-0.065685000	0
0.04500	-0.064990000	0
0.05500	-0.064295000	0
0.06500	-0.063600000	0
0.07500	-0.062905000	0
0.08500	-0.062215000	11
0.09500	-0.061520000	7
0.10500	-0.060845000	10
0.11500	-0.060195000	9
0.12500	-0.059540000	6
0.13500	-0.058885000	6
0.14500	-0.058235000	7
0.15500	-0.057585000	5
0.16500	-0.056930000	10
0.17500	-0.056275000	11
0.18500	-0.055625000	5
0.19500	-0.054975000	2
0.20500	-0.054335000	7
0.21500	-0.053705000	4
0.22500	-0.053075000	4
0.23500	-0.052445000	9
0.24500	-0.051820000	5
0.25500	-0.051195000	8
0.26500	-0.050565000	20
0.27500	-0.049935000	14
0.28500	-0.049305000	20
0.29500	-0.048675000	7
0.30500	-0.047990000	20
0.31500	-0.047245000	11
0.32500	-0.046500000	13
0.33500	-0.045755000	10
0.34500	-0.045010000	14
0.35500	-0.044265000	5
0.36500	-0.043520000	23
0.37500	-0.042775000	26
0.38500	-0.042030000	10
0.39500	-0.041285000	31
0.40500	-0.040190000	10
0.41500	-0.038750000	18
0.42500	-0.037310000	12
0.43500	-0.035870000	2
0.44500	-0.034425000	4
0.45500	-0.032980000	9
0.46500	-0.031540000	17
0.47500	-0.030100000	6
0.48500	-0.028660000	12
0.49500	-0.027220000	10
0.50500	-0.024785000	21
0.51500	-0.021355000	16
0.52500	-0.017925000	5
0.53500	-0.014495000	22
0.54500	-0.011065000	18
0.55500	-0.007640000	34
0.56500	-0.004215000	21
0.57500	-0.000785000	28
0.58500	0.002645000	18
0.59500	0.006075000	17
0.60500	0.009190000	7
0.61500	0.011985000	19
0.62500	0.014780000	29
0.63083	0.016412400	31
0.64083	0.019211570	39
0.65083	0.022002400	46
0.66083	0.024802400	41
0.67083	0.027602400	34
0.68083	0.030401570	30
0.69083	0.033192400	24
0.70083	0.035988250	22
0.71083	0.038738250	58
0.72083	0.041487420	28
0.73083	0.044228250	41
0.74083	0.046978250	51
0.75083	0.049727420	53
0.76083	0.052468250	31
0.77083	0.055218250	48
0.78083	0.057968250	46
0.79083	0.060717420	47
0.80083	0.063586070	28
0.81083	0.067875240	49
0.82083	0.072156070	21
0.83083	0.076446070	39
0.84083	0.080735240	31
0.85083	0.085016070	30
0.86083	0.089305240	55
0.87083	0.093586070	24
0.88083	0.097875240	21
0.89083	0.102156070	30
0.90083	0.106566420	27
0.91083	0.112305590	15
0.92083	0.118036420	33
0.93083	0.123776420	22
0.94083	0.129516420	37
0.95083	0.135255590	15
0.96083	0.140986420	25
0.97083	0.146726420	21
0.98083	0.152466420	21
0.99083	0.158205590	11
1.00083	0.163941400	15
1.01083	0.169740570	18
1.02083	0.175531400	8
1.03083	0.181330570	6
1.04083	0.187120570	15
1.05083	0.192911400	21
1.06083	0.198710570	19
1.07083	0.204501400	24
1.08083	0.210300570	12
1.09083	0.216091400	17
1.10083	0.222095580	12
1.11083	0.230355580	16
1.12083	0.238615580	14
1.13083	0.246875580	10
1.14083	0.255136410	13
1.15083	0.263405282	20
1.16083	0.265940000	41
1.17083	0.265940000	16
1.18083	0.267055580	24
1.19083	0.275315580	48
1.20083	0.283576410	35
1.21083	0.291845580	43
1.22083	0.300194202	77
1.23083	0.304970000	38
1.24083	0.304970000	28
1.25083	0.304970000	36
1.26083	0.304970000	24
1.27083	0.324015670	24
1.28083	0.349505670	46
1.29083	0.374995670	35
1.30083	0.400485670	66
1.31083	0.425975670	36
1.32083	0.450850000	11
1.33083	0.450850000	12
1.34083	0.450850000	33
1.35083	0.450850000	27
1.36083	0.450850000	32
1.37083	0.450850000	35
1.38083	0.450850000	72
1.39083	0.470635670	99
1.40083	0.496125670	51
1.41083	0.521615670	78
1.42083	0.546289780	48
1.43083	0.560963740	15
1.44083	0.564743740	21
1.45083	0.568524570	60
1.46083	0.572313740	135
1.47083	0.576093740	124
1.48083	0.579873740	121
1.49083	0.583654570	194
1.50083	0.587443740	112
1.51083	0.591223114	166
1.51789	0.593430000	168
1.52789	0.593430000	165
1.53789	0.595101871	184
1.54789	0.600413080	165
1.55789	0.606574920	230
1.56789	0.612854920	308
1.57789	0.619127030	355
1.58789	0.625404920	623
1.59789	0.631684920	489
1.60789	0.637964920	458
1.61789	0.644244920	335
1.62789	0.650524920	238
1.63789	0.656804920	328
1.64789	0.665325680	352
1.65789	0.675108440	489
1.66789	0.685060550	279
1.67789	0.695018440	244
1.68789	0.704978440	303
1.69789	0.714930550	262
1.70789	0.724888440	201
1.71789	0.734848440	127
1.72789	0.744800550	201
1.73789	0.754758440	299
1.74789	0.765617900	168
1.75789	0.776978270	159
1.76789	0.788416160	67
1.77789	0.799848270	102
1.78789	0.811278270	126
1.79789	0.822708270	88
1.80789	0.834146160	96
1.81789	0.845578270	64
1.82789	0.857008270	85
1.83789	0.868438270	90
1.84789	0.874280000	34
1.85789	0.874280000	10
1.86789	0.874280000	8
1.87789	0.874890954	104
1.88789	0.883032460	68
1.89789	0.891172460	81
1.90789	0.895580000	99
1.91789	0.895580000	88
1.92789	0.895580000	85
1.93789	0.902792460	82
1.94789	0.906590000	73
1.95789	0.906590000	181
1.96789	0.910283418	146
1.97789	0.918422460	57
1.98789	0.926562460	107
1.99789	0.934250000	136
2.00789	0.934250000	93
2.01789	0.934250000	77
2.02789	0.940641900	92
2.03789	0.948774570	60
2.04789	0.956951910	76
2.05789	0.965173470	109
2.06789	0.973403470	41
2.07789	0.981641360	69
2.08789	0.989873470	42
2.09789	0.998111360	43
2.10789	1.006343470	74
2.11789	1.014573470	38
2.12789	1.022811360	58
2.13789	1.031043470	39
2.14789	1.038681720	22
2.15789	1.045483180	9
2.16789	1.052103180	12
2.17789	1.058731070	9
2.18789	1.065353180	9
2.19789	1.071973180	6
2.20789	1.078593180	1
2.21789	1.085213180	2
2.22789	1.091833180	1
2.23789	1.098453180	3
2.24789	1.108694690	0
2.25789	1.124007490	2
2.26789	1.140417490	1
2.27789	1.156835380	1
2.28789	1.166060000	5
2.29789	1.166060000	1
2.30789	1.166060000	0
2.31789	1.173688425	1
2.32789	1.190105380	1
2.33789	1.206517490	0
2.34789	1.222927490	0
2.35789	1.239337490	0
2.45500	1.410790000	0
2.46500	1.428710000	0
2.47500	1.445950000	0
2.48500	1.461805000	0
2.49500	1.476960000	0
2.50500	1.492115000	0
2.51500	1.507270000	0
2.52500	1.522430000	1
2.53500	1.537585000	0
2.54500	1.552740000	2
2.55500	1.567895000	0
2.56500	1.583050000	0
2.57500	1.598545000	0
2.58500	1.614715000	0
2.59500	1.631225000	0
2.60500	1.647740000	0
2.61500	1.664255000	0
2.62500	1.680765000	0
2.63500	1.697280000	9
2.64500	1.713795000	0
2.65500	1.730305000	0
2.66500	1.746820000	0
2.67500	1.763405000	0
2.68500	1.780130000	1
2.69500	1.796935000	1
2.70500	1.813740000	1
2.71500	1.830540000	0
2.72500	1.847340000	0
2.73500	1.864140000	0
2.74500	1.880940000	0
2.75500	1.897740000	0
2.76500	1.914540000	0
2.77500	1.931475000	1
2.78500	1.948684242	0
2.79500	1.956040000	1
2.80500	1.956040000	0
2.81500	1.956040000	2
2.82500	1.969200000	0
2.83500	1.986545000	0
2.84500	2.003886667	0
2.85500	2.007440000	0
2.86500	2.007440000	0
2.87500	2.017470000	0
2.88500	2.034810000	0
2.89500	2.052155000	0
2.90500	2.069500000	0
2.91500	2.086840000	1
2.92500	2.102720000	0
2.93500	2.115430000	0
2.94500	2.126430000	0
2.95500	2.137430000	0
2.96500	2.148430000	4
2.97500	2.159430000	1
2.98500	2.170430000	0
2.99500	2.181425000	0
3.00500	2.192420000	1
3.01500	2.200830000	0
3.02500	2.200830000	0
3.03500	2.200830000	0
3.04500	2.207130000	0
3.05500	2.216908351	0
3.06500	2.218440000	0
3.07500	2.219502391	0
3.08500	2.227035000	0
3.09500	2.234565000	2
3.10500	2.242095000	0
3.11500	2.249625000	2
3.12500	2.257155000	0
3.13500	2.264685000	0
3.14500	2.272215000	0
3.15500	2.279745000	0
3.16500	2.287265000	0
3.17500	2.294720000	0
3.18500	2.302120000	0
3.19500	2.309515000	2
3.20500	2.316910000	0
3.21500	2.324305000	4
3.22500	2.331700000	2
3.23500	2.339100000	0
3.24500	2.346495000	0
3.25500	2.353890000	0
3.26500	2.361305000	0
3.27500	2.368865000	0
3.28500	2.376555000	0
3.29500	2.384250000	7
3.30500	2.391947458	9
3.31500	2.394910000	7
3.32500	2.394910000	2
3.33500	2.394910000	0
3.34500	2.394910000	0
3.35500	2.396147279	1
3.35905	2.399259883	0
3.36905	2.406949450	0
3.37905	2.414648500	0
3.38905	2.422339450	0
3.39905	2.430029450	0
3.40905	2.437719450	2
3.41905	2.446242050	0
3.42905	2.455268350	2
3.43905	2.464329300	0
3.44905	2.473398350	0
3.45905	2.482459300	0
3.46905	2.491528350	0
3.47905	2.500598350	1
3.48905	2.509659300	0
3.49905	2.518728350	0
3.50905	2.527789300	0
3.51905	2.537935300	0
3.52905	2.548738300	0
3.53905	2.559589250	0
3.54905	2.570448300	0
3.55905	2.581308300	0
3.56905	2.592159250	0
3.57905	2.603019079	0
3.58905	2.604040000	0
3.59905	2.604040000	0
3.60905	2.604040000	0
3.61905	2.611458174	0
3.62905	2.622309250	0
3.63905	2.633168300	0
3.64905	2.644589400	0
3.65905	2.656775300	0
3.66905	2.669044350	0
3.67905	2.681305300	0
3.68905	2.693574350	1
3.69905	2.705835300	0
3.70905	2.718095300	0
3.71905	2.730364350	0
3.72905	2.742625300	0
3.73905	2.748960000	1
3.74905	2.748960000	0
3.75905	2.748960000	0
3.76905	2.760935300	0
3.77905	2.771910200	1
3.78905	2.782650650	0
3.79905	2.793380650	2
3.80905	2.804110650	0
3.81905	2.814840650	0
3.82905	2.825570650	0
3.83905	2.836300650	2
3.84905	2.847030650	0
3.85905	2.857760650	0
3.86905	2.868490650	0
3.87905	2.878641450	0
3.88905	2.888686200	0
3.89905	2.898735250	0
3.90905	2.908776200	0
3.91905	2.918816200	1
3.92905	2.928856200	0
3.93905	2.938899348	0
3.94905	2.939050000	0
3.95905	2.939050000	1
3.96905	2.939050000	0
3.97905	2.939050000	3
3.98905	2.939050000	4
3.99905	2.939050000	1
4.00905	2.948896200	5
4.01905	2.958945250	1
4.02905	2.968986200	0
4.03905	2.991705250	0
4.04905	3.016705500	0
4.05905	3.041805500	0
4.06905	3.066905500	0
4.07905	3.092014550	0
4.08905	3.117115500	0
4.09905	3.142215500	0
4.10905	3.167315500	0
4.11905	3.192424550	1
4.12905	3.217525500	0
4.13905	3.243096100	1
4.14905	3.268752300	0
4.15905	3.294412300	0
4.16905	3.320072300	0
4.17905	3.345732300	0
4.18905	3.371392300	0
4.19905	3.397052300	0
4.20905	3.422712300	0
4.21905	3.448372300	0
4.23103	3.478727760	0
4.24103	3.500619950	0
4.25103	3.522268920	0
4.26103	3.543909950	0
4.27103	3.565558920	0
4.28103	3.587199950	0
4.29103	3.608848920	0
4.30103	3.630489950	2
4.31103	3.652138920	1
4.32103	3.673779950	0
4.33103	3.694953060	0
4.34103	3.711938040	2
4.35103	3.728618040	1
4.36103	3.745298040	0
4.37103	3.761977698	0
4.38103	3.776920000	0
4.39103	3.776920000	1
4.40103	3.776920000	7
4.41103	3.776920000	3
4.42103	3.788477010	2
4.43103	3.805148040	0
4.44103	3.821828040	0
4.45103	3.838508040	0
4.46103	3.854693640	0
4.47103	3.866115290	1
4.48103	3.873545290	0
4.49103	3.880975290	0
4.50103	3.888405290	0
4.51103	3.895835290	0
4.52103	3.903265290	1
4.53103	3.910695290	0
4.54103	3.918125290	0
4.55103	3.925555290	0
4.56103	3.932996620	0
4.57103	3.940546920	0
4.58103	3.948186920	0
4.59103	3.955826920	0
4.60103	3.963466920	0
4.61103	3.971106920	0
4.62103	3.978746920	0
4.63103	3.986386920	2
4.64103	3.994026920	0
4.65103	4.001666920	0
4.66103	4.009460390	2
4.67103	4.018731180	0
4.68103	4.022720000	2
4.69103	4.022720000	0
4.70103	4.023812530	2
4.71103	4.034321500	0
4.72103	4.044822530	0
4.73103	4.055332530	0
4.74103	4.065842530	0
4.75103	4.076351500	0
4.76103	4.086852530	1
4.77103	4.097362530	0