Climate change altered ancient diet

2020 ◽  
Vol 245 (3271) ◽  
pp. 19
Keyword(s):  
2019 ◽  
Author(s):  
Kirsty Owen ◽  
Rebecca Jones

We explore the idea of the 'public benefit' of archaeology and argue that our definition of what this means needs to be broadened, so that those that fund and consume archaeological information, and those that currently do not, can better understand the full breadth of its importance and significance. Archaeological information is relevant to, and in many cases actively contributes to, climate change, the promotion of diversity, the construction of sustainable communities and the appreciation and understanding of place. We will present and discuss some of the range of projects that are currently being supported through Historic Environment Scotland's Archaeology Programme, which is now focused on the delivery of Scotland's Archaeology Strategy. Many of these projects bring together professional archaeologists and members of the public, but how do we get a greater variety of people interested? It will be argued that one of the key roles of a national body is to bridge the gap between people's day-to-day lives and archaeology, making clearer why it is important to everyone. There are clearly challenges inherent in this approach, and we will present these to EAC members for discussion. We argue that different forms of media can be used to amplify the relevance of archaeological information, and that this could be done more effectively. At present, archaeological information is largely consumed as an academic text-based narrative, hard to understand by the general public, and its relevance to everyday life is rarely clearly conveyed. We are seeking to improve this through better, more relevant, stories and imagery. The scientific endeavours of archaeologists, varying from landscape reconstruction to analysis of ancient diet are often relevant to contemporary issues – this could be better explored and promoted.


2019 ◽  
Vol 3 (6) ◽  
pp. 723-729
Author(s):  
Roslyn Gleadow ◽  
Jim Hanan ◽  
Alan Dorin

Food security and the sustainability of native ecosystems depends on plant-insect interactions in countless ways. Recently reported rapid and immense declines in insect numbers due to climate change, the use of pesticides and herbicides, the introduction of agricultural monocultures, and the destruction of insect native habitat, are all potential contributors to this grave situation. Some researchers are working towards a future where natural insect pollinators might be replaced with free-flying robotic bees, an ecologically problematic proposal. We argue instead that creating environments that are friendly to bees and exploring the use of other species for pollination and bio-control, particularly in non-European countries, are more ecologically sound approaches. The computer simulation of insect-plant interactions is a far more measured application of technology that may assist in managing, or averting, ‘Insect Armageddon' from both practical and ethical viewpoints.


2019 ◽  
Vol 3 (2) ◽  
pp. 221-231 ◽  
Author(s):  
Rebecca Millington ◽  
Peter M. Cox ◽  
Jonathan R. Moore ◽  
Gabriel Yvon-Durocher

Abstract We are in a period of relatively rapid climate change. This poses challenges for individual species and threatens the ecosystem services that humanity relies upon. Temperature is a key stressor. In a warming climate, individual organisms may be able to shift their thermal optima through phenotypic plasticity. However, such plasticity is unlikely to be sufficient over the coming centuries. Resilience to warming will also depend on how fast the distribution of traits that define a species can adapt through other methods, in particular through redistribution of the abundance of variants within the population and through genetic evolution. In this paper, we use a simple theoretical ‘trait diffusion’ model to explore how the resilience of a given species to climate change depends on the initial trait diversity (biodiversity), the trait diffusion rate (mutation rate), and the lifetime of the organism. We estimate theoretical dangerous rates of continuous global warming that would exceed the ability of a species to adapt through trait diffusion, and therefore lead to a collapse in the overall productivity of the species. As the rate of adaptation through intraspecies competition and genetic evolution decreases with species lifetime, we find critical rates of change that also depend fundamentally on lifetime. Dangerous rates of warming vary from 1°C per lifetime (at low trait diffusion rate) to 8°C per lifetime (at high trait diffusion rate). We conclude that rapid climate change is liable to favour short-lived organisms (e.g. microbes) rather than longer-lived organisms (e.g. trees).


2001 ◽  
Vol 70 (1) ◽  
pp. 47-61 ◽  
Author(s):  
Robert Moss ◽  
James Oswald ◽  
David Baines

Author(s):  
Brian C. O'Neill ◽  
F. Landis MacKellar ◽  
Wolfgang Lutz
Keyword(s):  

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