Crop responses to climatic variation: Papers of a Discussion Meeting held at The Royal Society on 26 and 27 April 2005

Food crops an a changing climate

John R. Porter; Mikhail A. Semenov

doi:10.1098/rstb 2005.1752

Crop responses to climatic variation: Papers of a Discussion Meeting held at The Royal Society on 26 and 27 April 2005 Food crops an a changing climate

607 Citations (Scopus)

Abstract

The yield and quality of food crops is central to the well being of humans and is directly affected by climate and weather. Initial studies of climate change on crops focussed on effects of increased carbon dioxide (CO2) level and/or global mean temperature and/or rainfall and nutrition on crop production. However, crops can respond nonlinearly to changes in their growing conditions, exhibit threshold responses and are subject to combinations of stress factors that affect their growth, development and yield. Thus, climate variability and changes in the frequency of extreme events are important for yield, its stability and quality. In this context, threshold temperatures for crop processes are found not to differ greatly for different crops and are important to define for the major food crops, to assist climate modellers predict the occurrence of crop critical temperatures and their temporal resolution. This paper demonstrates the impacts of climate variability for crop production in a number of crops. Increasing temperature and precipitation variability increases the risks to yield, as shown via computer simulation and experimental studies. The issue of food quality has not been given sufficient importance when assessing the impact of climate change for food and this is addressed. Using simulation models of wheat, the concentration of grain protein is shown to respond to changes in the mean and variability of temperature and precipitation events. The paper concludes with discussion of adaptation possibilities for crops in response to drought and argues that characters that enable better exploration of the soil and slower leaf canopy expansion could lead to crop higher transpiration efficiency.

Original language	English
Journal	Philosophical Transactions of the Royal Society of London. Biological Sciences
Volume	360
Issue number	1463
Pages (from-to)	2021-2035
Number of pages	15
ISSN	0962-8436
DOIs	https://doi.org/10.1098/rstb 2005.1752
Publication status	Published - 2005

Keywords

Former LIFE faculty
crop yields; climatic variability; simulation models; grain quality; crop adaptation

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

Access to Document

10.1098/rstb 2005.1752

http://www.pubs.royalsoc.ac.uk.phi_ trans_bio_food_crops.shtml

Cite this

Crop responses to climatic variation : Papers of a Discussion Meeting held at The Royal Society on 26 and 27 April 2005 Food crops an a changing climate. / Porter, John R.; Semenov, Mikhail A.

In: Philosophical Transactions of the Royal Society of London. Biological Sciences, Vol. 360, No. 1463, 2005, p. 2021-2035.

Research output: Contribution to journal › Journal article › Research › peer-review

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