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Evaluation of tropical forests sensitivity to past climate changes (FORSENS) (NERC grant NE/J018562/1)

The dataset is the output of a NERC fellowship aimed to understand the long-term dynamics of tropical vegetation through palaeoecological analysis. For doing this, two sedimentary archives (Laguna Pindo and Laguna Baños) from Ecuador were radiocarbon dated and analysed for pollen, non-pollen palynomorphs, charcoal, chironomids, stable isotopes and XRF of tephra deposits. Each proxy was analysed at different resolution. Laguna Pindo is a mid-elevation lake (1250 m asl) that spans the last 50,000 years. Laguna Baños is an Andean lake located at 3800 m asl and contains sediments representative of the last 6500 years. Both water bodies are very shallow. The data is presented mainly in excel spreadsheets as raw data (except for radiocarbon dating data, which are the PDF files provided by NRCF), without any math treatment or conversion. Publication associated with NERC grant, Frazer Matthews-Bird, Stephen J. Brooks, Philip B. Holden, Encarni Montoya, and William D. Gosling (2016), Inferring late-Holocene climate in the Ecuadorian Andes using a chironomid-based temperature inference model. Clim. Past, 12, 1263-1280, 2016. doi:10.5194/cp-12-1263-2016
 
Citation proposal
(2016) . Evaluation of tropical forests sensitivity to past climate changes (FORSENS) (NERC grant NE/J018562/1). https://metadata.bgs.ac.uk/geonetwork/srv/api/records/4064b9bb-e765-38d9-e054-002128a47908

Simple

Date ( Publication )
2016-06
Identifier
http://data.bgs.ac.uk/id/dataHolding/13607029

  Point of contact

Open University - Dr E Montoya Romo (School of Environment, Earth & Ecosystem Sciences )  

Maintenance and update frequency
notApplicable notApplicable
GEMET - INSPIRE themes
  • Geology
BGS Thesaurus of Geosciences
  • Climatology , Quaternary , Palaeoecology , Holocene
Keywords
  • NERC_DDC
Access constraints
otherRestrictions Other restrictions
Use constraints
otherRestrictions Other restrictions
Other constraints
The copyright of materials derived from the British Geological Survey's work is vested in the Natural Environment Research Council [NERC]. No part of this work may be reproduced or transmitted in any form or by any means, or stored in a retrieval system of any nature, without the prior permission of the copyright holder, via the BGS Intellectual Property Rights Manager. Use by customers of information provided by the BGS, is at the customer's own risk. In view of the disparate sources of information at BGS's disposal, including such material donated to BGS, that BGS accepts in good faith as being accurate, the Natural Environment Research Council (NERC) gives no warranty, expressed or implied, as to the quality or accuracy of the information supplied, or to the information's suitability for any use. NERC/BGS accepts no liability whatever in respect of loss, damage, injury or other occurence however caused.
Other constraints
Available under the Open Government Licence subject to the following acknowledgement accompanying the reproduced NERC materials "Contains NERC materials ©NERC [year]"
Metadata language
English English
Topic category
  • Geoscientific information
Geographic identifier
ANDES [id=842000]

 

Date ( Creation )
1979

Geographic identifier
BO

 

Date ( Revision )
2009

Geographic identifier
BOL

 

Date ( Revision )
2009

Geographic identifier
BOLIVIA [id=867000]

 

Date ( Creation )
1979

Geographic identifier
EC

 

Date ( Revision )
2009

Geographic identifier
ECU

 

Date ( Revision )
2009

Geographic identifier
ECUADOR [id=863000]

 

Date ( Creation )
1979

Geographic identifier
PE

 

Date ( Revision )
2009

Geographic identifier
PER

 

Date ( Revision )
2009

Geographic identifier
PERU [id=864000]

 

Date ( Creation )
1979

N
S
E
W


Supplemental Information
NERC grant NE/J018562/1. This grant is linked to NERC studentship grant NE/J500288/1, see metadata entry 13606924.

Reference System Information

No information provided.
Distribution format
  • ()

OnLine resource
https://dx.doi.org/10.5194/cp-12-1263-2016  
OnLine resource
http://www.bgs.ac.uk/services/ngdc/accessions/index.html#item73130  
Hierarchy level
dataset Dataset
Other
dataset

Conformance result

Date ( Publication )
2011
Explanation
See the referenced specification
Pass
false

Conformance result

Date ( Publication )
2010-12-08
Explanation
See http://eur-lex.europa.eu/LexUriServ/LexUriServ.do?uri=OJ:L:2010:323:0011:0102:EN:PDF
Pass
false
Statement
Collection of the sedimentary archives (field work to Ecuador). The recovery of the sediments was performed from a wooded platform on the lakes supported in inflatable boats using a Livingstone corer. - Storage in a cold room based at the Open University (UK) until splitting the cores. - Subsampling the cores using a syringe of 1cc volume. LAB TREATMENT FOR PALYNOLOGICAL ANALYSES (proxies analysed: pollen ,non-pollen palynomorphs, and microcharcoal) - Acid digestion using hot: KOH at 10%, Na4P2O7 at 2.66%, HCl at 10%, HF at 40%, and acetolisis mixture (mix of (CH3CO)2O at 97% and H2SO4 at 95-98% in a proportion of 9:1). Palynological residues obtained from the treatment were mounted in glycerine. LAB TREATMENT FOR CHIRONOMIDS ANALYSIS - Disaggregation of the sediment using hot KOH at 10% - Dehydration of the chironomids head capsules by sequential imbibition using: ethanol (80%), ethanol (100%), and euparal essence. Final mounting in slides using euparal. LAB TREATMENT FOR STABLE ISOTOPES ANALYSIS - Drying of samples at 40ºC - Crushing of the dried sediments to a fine powder - Decalcification: add 0.1M and 1.0M of HCl; dry samples overnight at 40ºC, and transfer the samples to Sn capsules for the analysis LAB TREATMENT FOR XRF ANALYSIS - Drying of samples overnight at 110 °C - Crushing of the dried sediments to a fine powder - Loss-on-ignition was performed on 1.2 g of the powdered sub-sample; the sub-sample was ignited for one hour in a furnace set at 1000 °C - Glass discs were then created using 0.7000 g of the remaining powdered sub-sample and 3.6300 g of lithium metaborate flux - The powder/flux mix was then placed into a muffle furnace at 1100 °C for 20 minutes in order to melt the mixture - When homogenised, the melt was poured into a heated brass mould and a plunger was pressed down steadily, forming the glass disc - The samples (in glass discs) were analysed on an ARL 8420+ dual goniometer wavelength dispersive XRF spectrometer.

gmd:MD_Metadata

File identifier
4064b9bb-e765-38d9-e054-002128a47908   XML
Metadata language
English English
Hierarchy level
dataset Dataset
Date stamp
2021-02-25
Metadata standard version
2.3

  Point of contact

British Geological Survey  
Environmental Science Centre,Keyworth NOTTINGHAM NOTTINGHAMSHIRE NG12 5GG United Kingdom

  +44 115 936 3100  
Dataset URI
http://data.bgs.ac.uk/id/dataHolding/13607029
 
 

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