Imperial College London

Dr Samraat Pawar

Faculty of Natural SciencesDepartment of Life Sciences (Silwood Park)

Reader in Theoretical Ecology



+44 (0)20 7594 2213s.pawar CV




2.4KennedySilwood Park






BibTex format

author = {Kontopoulos, D-G and van, Sebille E and Lange, M and Yvon-Durocher, G and Barraclough, TG and Pawar, S},
doi = {10.1101/452250},
publisher = {Cold Spring Harbor Laboratory},
title = {Phytoplankton thermal responses adapt in the absence of hard thermodynamic constraints},
url = {},
year = {2018}

RIS format (EndNote, RefMan)

AB - <jats:title>Abstract</jats:title><jats:p>To better predict how populations and communities respond to climatic temperature variation, it is necessary to understand how the shape of the response of fitness-related traits to temperature evolves (the thermal performance curve). Currently, there is disagreement about the extent to which the evolution of thermal performance curves is constrained. One school of thought has argued for the prevalence of thermodynamic constraints through enzyme kinetics, whereas another argues that adaptation can—at least partly—overcome such constraints. To shed further light on this debate, we perform a phylogenetic meta-analysis of the thermal performance curves of growth rate of phytoplankton—a globally important functional group—, controlling for environmental effects (habitat type and thermal regime). We find that thermodynamic constraints have a minor influence on the shape of the curve. In particular, we detect a very weak increase of maximum performance with the temperature at which the curve peaks, suggesting a weak “hotter-is-better” constraint. Also, instead of a constant thermal sensitivity of growth across species, as might be expected from strong constraints, we find that all aspects of the thermal performance curve evolve along the phylogeny. Our results suggest that phytoplankton thermal performance curves adapt to thermal environments largely in the absence of hard thermodynamic constraints.</jats:p>
AU - Kontopoulos,D-G
AU - van,Sebille E
AU - Lange,M
AU - Yvon-Durocher,G
AU - Barraclough,TG
AU - Pawar,S
DO - 10.1101/452250
PB - Cold Spring Harbor Laboratory
PY - 2018///
TI - Phytoplankton thermal responses adapt in the absence of hard thermodynamic constraints
UR -
ER -