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Title:
NILEx tracer (leaf): dry weight of leaves, leaf decomposition
Access rights:
Free within projects
Usage rights:
Usage rights: dataset is available on request for all Tracer NILEx members; Acknowledgement of non members: Manuel Hiß, Mr. Qi and other Chinese helpers (fieldwork), Benjamin Plaga and German helpers (labwork)
Published:
No information available
Abstract:
Leaf decomposition plays an important role in ecosystem biogeochemistry. Nutrients are released from decomposing litter by leaching of soluble substances and the break-down by animals, microbes and fungi, and will thus become again available for uptake by plants. These decomposition processes might be influenced by the composition and diversity of litter species. To gain a deeper understanding about the relationships between litter diversity, nutrient cycling and uptake by plants, we established a leaf decomposition experiment at the forest rim of Site A in a small natural forest.
Design:
Unlabelled, and 15N and Li labelled leaves of the native tree species Sapindus saponaria, Quercus actusissima and Schima superba were used to create 1-, 2- and 3-species mixtures with one species labelled each per mixture. In total, 12 plots with all possible mixtures were replicated three times arranged in three blocks. Leaves of the respective species mixtures were placed in mesocosms together with one phytometer plant (Carex spec.). Over a timeperiode of six month, leaves and phytometer plants of each mixture were recovered in four timesteps (after 12, 37, 101 an 171 days). All leaves were cleaned, separated into species, dried at 40°C, weighted and analyzed for their Li and 15N content. 15N analysis were also carried out with the leaves and roots of the respective phytometer plant.
Spatial extent:
No information available
Temporal extent:
No information available
Taxonomic extent:
The 15N an Li labelled and unlabelled leaves of tree native tree species were used: Sapindus saponaria, Schima superba, Quercus acutissima. The trees were transplanted to a field near site B from a nursery in Dexing in spring 2011. The senescend leaves were collected in autumn 2011.
Measurement cirumstances:
not easy to clean the leaves
Data analysis:
The total weight of litter mixtures was measured after cleaning and drying at 40°C

Filter:
Dataset column

Name:
plot_ID
Definition:
Plot identity code; is composed of the following informatioN: T (=TracerNILEx) + number of the respective block + number of the respective plot + Litter diversity Level + Labelled litter species in the Mixture
Unit:
No information available
Datagroup:
NILEx research plot
Keywords:
TraxerNILEx, NILEx, plot
Values:
T_B1_P03_D1_Querc
T_B1_P09_D2_Querc_Schi
T_B1_P10_D2_Querc_Schi
T_B1_P07_D1_Schi
T_B1_P05_D1_Sap
Contributors:
No information available

Dataset column

Name:
mesocosm_ID
Definition:
Mesocosm identity code; is composed of the following informatioN: T (=TracerNILEx) + Timestep + number of the respective block + number of the respective mesocosm + Litter diversity Level + Labelled litter species in the Mixture
Unit:
No information available
Datagroup:
NILEx research plot
Keywords:
TraxerNILEx, NILEx, plot, mesocosm
Values:
T_T0_B1_P07_D1_Schi
T_T0_B1_P10_D2_Querc_Schi
T_T0_B1_P03_D1_Querc
T_T0_B1_P09_D2_Querc_Schi
T_T0_B1_P05_D1_Sap
Contributors:
No information available

Dataset column

Name:
carex_leaf_barcode
Definition:
Sample identity of reference species. Is composed of: TN(=TracerNILEx)+G(=green leaves)+"-"+Timestep+Block+Plot
Unit:
No information available
Datagroup:
NILEx Barcode
Keywords:
TracerNILEx, reference plant
Values:
TNG-T0B1P09
TNG-T0B1P07
TNG-T0B1P10
TNG-T0B1P05
TNG-T0B1P03
Contributors:
No information available

Dataset column

Name:
carex_ root_barcode
Definition:
Sample identity of reference species. Is composed of: TN(=TracerNILEx)+R(=root)+"-"+Timestep+Block+Plot
Unit:
No information available
Datagroup:
NILEx Barcode
Keywords:
TracerNILEx, reference plant
Values:
TNR-T0B1P09
TNR-T0B1P03
TNR-T0B1P05
TNR-T0B1P07
TNR-T0B1P10
Contributors:
No information available

Dataset column

Name:
timestep
Definition:
Timestep of sample collection ofter exposure
Unit:
No information available
Datagroup:
Time series
Keywords:
TracerNILEx, decomposition, timestep
Values:
T1
T3
T0
T4
T2
Contributors:
No information available

Dataset column

Name:
days
Definition:
Duration of decomposition trial
Unit:
No information available
Datagroup:
Exposure time
Keywords:
TracerNILEx, decomposition, timestep.duration
Values:
37
171
101
0
12
Contributors:
No information available

Dataset column

Name:
block
Definition:
Number of Block within the NILEx experiment
Unit:
No information available
Datagroup:
NILEx research plot
Keywords:
TraxerNILEx, NILEx, plot, block
Values:
B1
B3
B2
Contributors:
No information available

Dataset column

Name:
plot
Definition:
Number of Plot within the respective NILEx plot
Unit:
No information available
Datagroup:
NILEx research plot
Keywords:
TraxerNILEx, NILEx, plot
Values:
P04
P07
P03
P06
P05
Contributors:
No information available

Dataset column

Name:
diversity
Definition:
Diversity of litter mixture: D1= Monoculture, D2= 2-species mixture, D3= 3-species mixture
Unit:
No information available
Datagroup:
Litter diversity
Keywords:
TraxerNILEx, NILEx, litter diversity
Values:
D3
D2
D1
Contributors:
No information available

Dataset column

Name:
composition
Definition:
Species composition within the mixture: Querc= Quercus acutissima, Schi= Schima superba, Sap= Sapindus mukorossi
Unit:
No information available
Datagroup:
Litter species composition
Keywords:
TraxerNILEx, NILEx, litter diversity
Values:
Querc
Querc_Sap
Sap
Querc_Schi
Querc_Sap_Schi
Contributors:
No information available

Dataset column

Name:
labelled_species
Definition:
Indicates the species which was labelled in the respective litter mixture
Unit:
No information available
Datagroup:
Stable isotope
Keywords:
TraxerNILEx, NILEx, litter diversity, labelled
Values:
Querc
Sap
Schi
Contributors:
No information available

Dataset column

Name:
mesocosm_position
Definition:
position of the microcosm selected randomy within the respective plot and respective timestep
Unit:
No information available
Datagroup:
NILEx research plot
Keywords:
TraxerNILEx, NILEx, plot, mesocosm
Values:
3
1
NA
4
2
Contributors:
No information available

Dataset column

Name:
total_weight_g
Definition:
total dry weight of leaf mixture
Unit:
g
Datagroup:
Decomposition
Keywords:
TracerNILEx, decomposition
Values:
0.0496
0.07
0.056
0.09
0.019
Contributors:
No information available

Dataset column

Name:
total_weight_perc
Definition:
total dry weight of leaf mixture
Unit:
%
Datagroup:
Decomposition
Keywords:
TracerNILEx, decomposition
Values:
10.490196078431374
10.554901960784315
0.9725490196078431
100
0.37254901960784315
Contributors:
No information available

Dataset column

Name:
total_weight_mean
Definition:
Mean weight of each litter mixture at the respective timestep
Unit:
g
Datagroup:
Decomposition
Keywords:
TracerNILEx, decomposition
Values:
10.18921568627451
12.919150326797386
100
10.87
19.436405228758172
Contributors:
No information available

Dataset column

Name:
pred_weight_perc
Definition:
predicted mass loss from single species [%] based on mean value
Unit:
%
Datagroup:
Decomposition
Keywords:
TracerNILEx, decomposition
Values:
14.32
10.87
16.775
100
12.24
Contributors:
No information available

Dataset column

Name:
carex_rest_weight
Definition:
dry weight of Carex leaf litter
Unit:
g
Datagroup:
Decomposition
Keywords:
TracerNILEx, decomposition
Values:
0.009
0.007
0.004
0
0.001
Contributors:
No information available

Dataset column

Name:
carex_roots_weight
Definition:
dry weight of Carex roots
Unit:
g
Datagroup:
Decomposition
Keywords:
TracerNILEx, decomposition
Values:
0.002
0.008
0.005
0.01
0.009
Contributors:
No information available

Dataset column

Name:
carex_leaf_weight
Definition:
dry weight of Carex green leaves
Unit:
g
Datagroup:
Decomposition
Keywords:
TracerNILEx, decomposition
Values:
0.01
0.007
0.001498
0.013
0.011
Contributors:
No information available

Dataset column

Name:
carex_leaves_15N
Definition:
15-N stable isotope ratio (d15N) of Carex leaves
Unit:
No information available
Datagroup:
Stable isotope
Keywords:
TracerNILEx, decomposition, isotope ratio, d15N
Values:
0.044
0.07685714285714196
0.16485714285714193
0.154
0.1865
Contributors:
No information available

Dataset column

Name:
carex_roots_15N
Definition:
15-N stable isotope ratio (d15N) of Carex roots
Unit:
No information available
Datagroup:
Stable isotope
Keywords:
TracerNILEx, decomposition, isotope ratio, d15N
Values:
0.035874999999999546
0.01687499999999953
0.056874999999999454
-0.1561250000000005
0.1166666666666667
Contributors:
No information available

Dataset column

Name:
carex_leaves_AP
Definition:
Atomic percentage of 15N in Carex leaves
Unit:
%
Datagroup:
Stable isotope
Keywords:
TracerNILEx, decomposition, isotope ratio, d15N
Values:
0.3642519356381672
0.364291208670171
0.36394169837644863
0.3643042996739588
0.364222117204302
Contributors:
No information available

Dataset column

Name:
carex_roots_AP
Definition:
Atomic percentage of 15N in Carex roots
Unit:
%
Datagroup:
Stable isotope
Keywords:
TracerNILEx, decomposition, isotope ratio, d15N
Values:
0.36410097963319166
0.36461225545479276
0.3644969824880198
0.3644275276694891
0.3645409826109128
Contributors:
No information available

No information available


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94 seidelmann medium

Katrin
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