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Dr Pallavi Anand

Professional biography

My research involves developing biogeochemical tracers in the modern oceanic environment and their application in the past to understand changes in ocean chemistry and climate. In order to understand the past through these tracers, they need to be developed, calibrated and validated against biological, physical and chemical variables in the modern environment. We develop micropalaeontological tools (assemblage and shell parameters) and geochemical tracers (trace elements and isotopes) using microfossils, fish-teeth and bulk sediments to understand past changes in seawater properties, ocean circulation and ocean-continent-atmosphere interactions.  

I am always interested in hearing from motivated students and postdocs willing to come and work on foraminifera, geochemical tracers and palaeoceanographic research at the Open University. Please send me an email to explore possibilities.

Research Experience

Oct 09   Lecturer, The Open University, UK.

Apr 06- Sep 09 NERC Research Fellow (part-time), The Open University, UK.

May 03-Mar 06   Postdoctoral Research Scientist, Free University, Netherlands.

Nov 02-Apr 03   Post-doctoral Researcher, University of Cambridge, UK.

Oct 98-Mar 02    Postgraduate Research Student, University of Cambridge, UK.

Research interests

My broad research interest is in the field of biogeochemical tracers to understand the past changes in Ocean chemistry and climate. I focus on developing and applying trace elements and isotopic compositions of foraminiferal shells from world oceans and reconstruct past changes in ocean chemistry to understand oceanic processes and climate variations on a shorter (decadal, glacial-interglacial) and longer (Cenozoic) geological time-scales. Another research area is in understanding foraminiferal ecology and bio-calcification processes and how anthropogenic ocean acidification has affected calcification in planktonic foraminifera.

  • Quantification and refinement of the biological and environmental controls on trace element/Ca (e.g., Mg/Ca, Li/Ca, B/Ca) and stable isotopes (e.g., oxygen and carbon) during bio-mineralization.
  • Application of coupled trace the element/Ca ratios and oxygen isotope in foraminifera to reconstruct past changes in sea surface and bottom water temperatures and salinities.
  • Study of microfossils species composition and foraminiferal shell parameters (length, size, density and weight) to understand ecology and controls on shell calcification process in the modern environment.
  • Validation and application of isotopic tracers (e.g., Sr, Nd and Li) in microfossils and sediments to understand changes in continental weathering, ocean circulation and provenance during the Cenozoic.

Fully funded PhD position for Oct 2017

Evolution of Indian Summer Monsoon intensification (Open to EU candidates only)

Supervisors: Pallavi Anand (OU), Nigel Harris (OU) and James Bendle (Birmingham)

Project highlights:

  • Multi-proxy monsoon hydroclimate reconstructions on tectonic time scale
  • Evaluate monsoon intensification in response to global climate and/or tectonics
  • Collaboration and networking opportunity with IODP expedition 353 team

PhD Opportunity for 2018 

If you have a first degree in the relevant science subject and a Masters/MSci/MESci or equivalent experience then please contact pallavi.anand at open.ac.uk to develop a project in a research area of interest.

Undergraduate research experience (2017)  

Email me for exploring possibilities for a funded 10 weeks of summer undergraduate research placement in ocean chemistry and climate research at the OU, if you meet all the eligibility criteria stated below.

Student eligibility criteria (must meet all of the following):

  • Be studying for an undergraduate degree in a quantitative discipline outside of NERC’s scientific remit (e.g. mathematics, statistics, computing, engineering, physics).

  • Be applying for a placement in a different department to their undergraduate degree.

  • Be undertaking their first undergraduate degree studies (or integrated Masters).

  • Be expected to obtain a first or upper second class UK honours degree.

  • Be eligible for subsequent NERC PhD funding (i.e. UK, EU or right to remain in the UK).

Nuffield projects 2017 for school students: Contact your regional co-ordinator.

Current PhD projects

  • Late Pliocene stratification and productivity reconstructions: linking monsoon evolution and climate (Yasmin B. Friberg, OU)- 2016

  • Reconstructing the Indian monsoon response to global climate change (Katrina Kerr, OU)- 2015
  • Cenozoic evolution of the Asian Monsoon: tectonic-climate interactions (Kate Newton, University of Birmingham)- 2015
  • Restoration of the long-spined sea urchin, Diadema antillarum (Max Bodmer, OU and Operation Wallacea)- 2014

Teaching interests

  • Oceans
  • An introduction to the Earth - Life System
  • Practical Science
  • Environmental Science
  • Palaeoenvironmental change
  • Geology and Geochemistry

 

Impact and engagement

We host yr 10 school students for science experience in our laboratory. In addition, we have a few As-level students working on various Nuffield funded projects in the lab over the summer break (4-5 weeks). Also, we have an undergraduate research experience placement student for 10 weeks between June-September.

External collaborations

External collaborators on current projects are:

Maureen Conte (BIOS, Bermuda),  P D Naidu (NIO, India),  Dick Kroon (Edinburgh, UK),  Kate Litter (Exeter University), Melanie Leng (BGS, UK),  Steve Clemens (Brown University),  Marci Robinson (USGS), Oscar E. Romero (University of Bremen), Priyank Jaiswal (USA), Yongsong Huang (Brown University, USA), Liviu Giosan (WHOI, USA)

Research Activity

Research groups

NameTypeParent Unit
Centre for Earth, Planetary, Space and Astronomical Research (CEPSAR)CentreFaculty of Science

 

Externally funded projects

Reconstruction of changes in Indian Summer Monsoon precipitation

RoleStart dateEnd dateFunding source
Lead01/Jul/201630/Sep/2016NERC (Natural Environment Research Council)
The Indian Summer Monsoon (ISM, a subsystem of Asian Monsoon) is a classic example of coupling between the solid Earth, ocean and atmospheric processes. The intensity of the ISM is due to anomalous heating of the troposphere over central Asia. This results in the formation of a low-pressure system that draws moist air from the surrounding oceans, and in turn results in intense precipitation across Indochina and south Asia, impacting billions of people. The intensity of this low-pressure system over the Asian continent and in turn, the summer monsoon precipitation intensity, is directly linked to the regional tectonic evolution of present day Asia [1]. This has been the case since the initial collision of India and Asia during the Cenozoic, around 50 Ma [2]. An interesting question on tectonic time-scales (i.e., >1 million years) therefore, is how summer monsoon precipitation varied over past climate extremes (e.g., glacial-interglacial during the Pliocene) and how this in turn affected continental erosion and consequently altered tectonic activity rates (i.e. exhumation and uplift) in the Himalaya and Tibet. The understanding of the variability of ISM precipitation due to climate-modulated processes in controlling tectonic evolution will be a step forward in understanding future changes in ISM precipitation. This study will therefore focus on investigating ISM precipitation variability since the Pliocene, providing a formidable analogue for future climate predictions [3]. This project aims to quantify change in terrestrial input due to the summer monsoon runoff strength. It will utilise newly drilled (International Ocean Discovery Programme Expedition 353) sedimentary sequences from the Andaman Sea (site U1448), one of the core regions of ISM precipitation and runoff, and site receives continental runoff during the ISM from the Irrawaddy and Salween rivers. The project involves: 1) Determination of elemental composition of bulk sediment from IODP site U1448 using portable X-Ray Fluorescence technique. New records of elemental concentration and ratios will be generated to understand changes in terrestrial input derived from monsoon runoff. 2) Reconstruction of total organic carbon and carbon isotopic composition of organic carbon variability to assess changes in organic carbon input from C3 versus C4 plants due to change in continental vegetation. 3) Quantification of variability of terrigenous input and total carbonate fraction during glacial-interglacial and the Pliocene.

How has recent ocean acidification affected the biocalcification and ecology of planktonic foraminifera?

RoleStart dateEnd dateFunding source
Lead01/Apr/201531/Mar/2016Cushman Foundation
This project aims to monitor the biological impact of recent Ocean Acidification (OA) by assessing changes in modern planktonic foraminifera (PF) flux and shell calcification. This project utilises a bi-weekly sediment trap time series (Ocean Flux Program) to quantify seasonal and interannual changes in PF flux, calcification and trace element incorporation in relation to physical and chemical oceanographic changes. These developed proxies will be utilised to constrain the changes in shell calcification and seawater chemistry in the past century (due to anthropogenic OA) and over glacial-interglacial timescales.

Indian Summer Monsoon: initiation and evolution to current strength

RoleStart dateEnd dateFunding source
Lead29/Nov/201431/Mar/2016NERC (Natural Environment Research Council)
The Asian Monsoon is one of the best examples of coupling between solid Earth and atmospheric processes but its initiation and evolution over tectonic (million years) time scales are poorly understood. The key question that this project will address is when did the present strength of the Indian Summer Monsoon (ISM) (a subsystem of the Asian Summer Monsoon) occur? This project will primarily utilise newly drilled continuous sedimentary successions from the Bay of Bengal (IODP Expedition 353) to reconstruct tectonic scale changes in (a) sea surface temperature (Mg/Ca in planktonic foraminifera) and sea surface salinity (d18O seawater from coupled d18O and Mg/Ca of planktonic foraminifera) (b) erosional strength (Al/Si) and continental flux variation as a result of monsoon runoff. The obtained multi-proxy data will provide insights into the initiation and evolution of ISM precipitation/runoff in the past and to its current strength.

NERC Doctoral Training Partnerships

RoleStart dateEnd dateFunding source
Co-investigator01/Oct/201430/Sep/2018NERC (Natural Environment Research Council)
CENTA is a geographically and scientifically coherent consortium offering a wide range of excellent NERC science embedded in a vibrant multidisciplinary environment. The Universities (Birmingham, Leicester, Loughborough, Open and Warwick) and Institutes (British Geological Survey and Centre for Ecology and Hydrology) have a strong track record of producing PhD graduates fit for further research or other relevant employment. We will advance PhD training significantly by offering broad and holistic educational opportunities in the environmental sciences, including innovative approaches to cohort training, supported by the Open University’s Virtual Research Environment learning platform. Where we offer leading national capability, we will offer training to other NERC consortia in addition to CENTA students. We are match-funding this bid for 20 studentships annually.CENTA defines its four areas of science excellence as follows: 1) Anthropogenic impacts and environmental sustainability. 2) Evolution of organisms and ecosystems. 3) Dynamic Earth. 4) Organisms.

Publications

Influence of the Amazon River on the Nd isotope composition of deep water in the western equatorial Atlantic during the Oligocene–Miocene transition (2016-11-15)
Stewart, Joseph; Gutjahr, Marcus; James, Rachael; Anand, Pallavi and Wilson, Paul
Earth and Planetary Science Letters, 454 (pp. 132-141)
Geochemical imprints of genotypic variants of Globigerina bulloides in the Arabian Sea (2016-10)
Sadekov, Aleksey Yu.; Darling, Kate F.; Ishimura, Toyoho; Wade, Christopher M.; Kimoto, Katsunori; Singh, Arun Deo ; Anand, Pallavi; Kroon, Dick; Jung, Simon; Ganssen, Gerald; Ganeshram, Raja; Tsunogai, Urumu and Elderfield, Henry
Paleoceanography, 31(10) (pp. 1440-1452)
Calcification and growth processes in planktonic foraminifera complicate the use of B/Ca and U/Ca as carbonate chemistry proxies (2016-09-01)
Salmon, Kate H.; Anand, Pallavi; Sexton, Philip F. and Conte, Maureen
Earth and Planetary Science Letters, 449 (pp. 372-381)
High precision radiogenic strontium isotope measurements of the modern and glacial ocean : limits on glacial-interglacial variations in continental weathering (2015-04)
Mokadem, Fatima; Parkinson, Ian J.; Hathorne, Ed C.; Anand, Pallavi; Allen, John T. and Burton, Kevin W.
Earth and Planetary Science Letters, 415 (pp. 111-120)
Upper ocean mixing controls the seasonality of planktonic foraminifer fluxes and associated strength of the carbonate pump in the oligotrophic North Atlantic (2015-01-13)
Salmon, K. H.; Anand, P.; Sexton, P. F. and Conte, M.
Biogeosciences, 12(1) (pp. 223-235)
Geochemical assessment of the palaeoecology, ontogeny, morphotypic variability and palaeoceanographic utility of “Dentoglobigerina” venezuelana (2012-03)
Stewart, Joseph A.; Wilson, Paul A.; Edgar, Kirsty M.; Anand, Pallavi and James, Rachael H.
Marine Micropaleontology, 84-85 (pp. 74-86)
Quantifying sea surface temperature ranges of the Arabian Sea for the past 20 000 years (2011-12)
Ganssen, G .; Peeters, F.; Metcalfe, B.; Anand, P.; Jung, S.; Kroon, D. and Brummer, G.-J.
Climate of the Past, 7(4) (pp. 1337-1349)
Mg/Ca and Sr/Ca ratios in planktonic foraminifera: Proxies for upper water column temperature reconstruction (2008)
Cleroux, Caroline; Cortjo, Elsa; Anand, Pallavi; Labeyrie, Laurent; Bassinot, Franck; Caillon, Nicolas and Duplessy, Jean-Claude
Paleoceanography, 23, Article PA3214(3)
Coupled sea surface temperature–seawater δ18O reconstructions in the Arabian Sea at the millennial scale for the last 35 ka (2008)
Anand, Pallavi; Kroon, Dick; Singh, Arun Deo; Ganeshram, Raja S.; Ganssen, Gerald and Elderfield, Henry
Paleoceanography, 23(4) (PA4207)
Calibrations for benthic foraminiferal Mg/Ca paleothermometry and the carbonate ion hypothesis (2006-10)
Elderfield, H.; Yu, J.; Anand, P. and Nyland, B.
Earth and Planetary Science Letters, 250(3-4) (pp. 633-649)
An evaluation of controls on planktonic foraminiferal Sr/Ca: Comparison of water column and core-top data from a North Atlantic transect (2005-12)
Mortyn, P. G.; Elderfield, H.; Anand, P. and Greaves, M.
Geochemistry, Geophysics, Geosystems, 6(12)
Variability of Mg/Ca and Sr/Ca between and within the planktonic foraminifers Globigerina bulloides and Globorotalia truncatulinoides (2005-11)
Anand, Pallavi and Elderfield, Henry
Geochemistry Geophysics Geosystems, 6(11)
Calibration of Mg/Ca thermometry in planktonic foraminifera from a sediment trap time series (2003-06)
Anand, Pallavi; Elderfield, Henry and Conte, Maureen H
Paleoceanography, 18(2) (pp. 28-31)
The retrieval of marine weathering records preserved by strontium stable isotopes in foraminifera (2010-12)
Stevenson, E. I.; Burton, K.; Mokadem, F.; Parkinson, I. J.; Anand, P. and Hathorne, E. C.
In : American Geophysical Union, Fall Meeting 2010. (13-17 December 2010, San Francisco)
Records of continental weathering for the past 15 Ma from paired analysis of lithium and neodymium isotopes in planktonic foraminifera (2010-08)
Anand, Pallavi; James, Rachael and Mokadem, Fatima
In : 10th International Conference on Paleoceanography (29 Aug - 3 Sep 2010, San Diego, USA)
Changes in weathering processes in the Oligocene – Miocene: interpretations of Li/Ca, d7Li and eNd data from the Ceara Rise, western equatorial Atlantic (2010-08)
John, Eleanor; Anand, Pallavi and James, Rachael
In : 10th International Conference on Paleoceanography (29 Aug - 3 Sep 2010, San Diego, USA)
Strontium stable isotope behaviour in foraminiferal calcite and the retrieval of marine records (2009)
Stevenson, E.; Burton, K. W.; Rickaby, R. E. M.; Parkinson, I. J.; Anand, P. and Hathorne, E. C.
In : American Geophysical Union, Fall Meeting 2009 (Dec 2009)
Utility of Li and Li isotopes as tracers of continental weathering (2008)
James, R. H.; Wimpenny, J. B.; Pogge von Strandmann, P. A. E.; Kisakurek, B.; Hathorne, E. C.; Anand, P. and Burton, K. W.
In : American Geophysical Union, Fall Meeting 2008 (15-18 Dec 2008)
d18O and trace element calibrations for 3 deep-dwelling planktonic foraminifera species : potential recorders of past thermocline temperature (2007-01)
Cléroux, C.; Cortijo, E.; Caillon, N.; Anand, P.; Bassinot, F.; Duplessy, J.-C. and Labeyrie, L.
In : European Geosciences Union General Assembly (15 – 20 Apr 2007)
Effect of supra-lysoclinal dissolution on oxygen isotopes and Mg/Ca in planktonic foraminifera (2004)
kroon, D.; Anand, Pallavi; Elderfield, H.; Birse, S. E. A. and Ganssen, G.
In : 8th International Conference on Paleoceanography (5-10 Sept 2004, Biarritz)
Temperature sensitivity of Planktonic foraminiferal Sr/Ca: discriminating against dissolution influence via water column versus core-top comparison (2004)
Mortyn, G. P.; Elderfield, H.; Greaves, M. and Anand, Pallavi
In : VIII International Conference on Paleoceanography (April 2004, Biarritz)
Water mass evolution at intermediate depths off somalia for the past 31 kyr based on the benthic foraminiferal chemistry (2004)
Anand, Pallavi; Kroon, D.; Elderfield, H.; Ganssen, G. and Brise, S. E. A.
In : 8th International conference on Paleoceanography (Sept 2004, Biarritz)
Variability of shell mass, d18O and Mg/Ca in planktonic foraminifera: from production to preservation (2003)
Anand, P.; Ganssen, G.; Elderfield, H.; Peeters, F.; Kroon, D. and Jung, S.
In : American Geophysical Union, Fall Meeting 2003 (December 2003, San Francisco)

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