OENO IVAS 2019 banner
IVES 9 IVES Conference Series 9 Viticultural zoning of central chile based on bioclimatic indexes and the impact of climate warming

Viticultural zoning of central chile based on bioclimatic indexes and the impact of climate warming

Abstract

Climate is considered one of the main factors that determines the aptitude of a specific location for growing grapes and producing high quality wine, being in that sense one of the main elements defining the concept of terroir. Several bioclimatic indexes have been proposed that attempt to describe the climatic aptitude for high quality wine production. Based on this, a study was developed to characterize present and future viticultural potential of Chilean zones considering the dynamic of climate change.

 
Maps of central Chile were built based in different climatic parameters and the calculation of bioclimatic indexes like Winkler, Huglin, Mean January Temperature, Cold Nights index and Fregoni. Interactive maps obtained allow determining the aptitude of a locality by introducing the geographic coordinates.

 

In a second step, the future evolution of these climatic parameters was studied considering different models of climatic change (CSIRO-Mk3-6-0; GFDL-CM3 and HadCM3), different scenarios (moderate or severe) and different periods of time. Results obtained are also represented in interactive maps allowing seeing the evolution of a climatic parameter in time depending on the model and severity chosen.

 

Results obtained show a clear evolution of the aptitude of the main viticultural areas with with an increase in aptitude of regions in the south of Chile that presently have limitations for a good maturation, in particular of red varieties. More to the south and closer to the Pacific Ocean areas that are not suitable for wine production now become apt for wine production Northern areas are in general negatively affected by becoming too hot and having increasing problems with water supply.

DOI:

Publication date: June 3, 2020

Issue: OENO IVAS 2019

Type: Article

Authors

Edmundo Bordeu, David Mordales and Francisco Meza

Pontificia Universidad Católica de Chile
Vicuña Mackenna 4860 – Comuna de Macul – Santiago – Chile
Postal code: 7820426

Contact the author

Tags

IVES Conference Series | OENO IVAS 2019

Citation

Related articles…

Adjustments of water use efficiency by stomatal regulation during drought and recovery of Verona province grape varieties grafted on two different vitis hybrid rootstocks

Drought is considered to be the predominant factor both for determining the geographic distribution of vegetation and for restricting crop yields in agriculture. Furthermore

Reconstructing ancient microbial fermentation genomes from the wine residues of Herod, Roman king of Judea

The fortress of the Herodium, built towards the end of the first century BCE/ante Cristo, on the orders of Herod the Great, Roman client king of Judea, attests the expansion of Roman influence in the eastern Mediterranean. During archaeological excavations of the Herodium in 2017[1], a winery was discovered on the ground floor of the palace, with an assortment of clay vessels in situ, including large dolia – clay fermentation vessels each capable of fermenting up to 300-400 L of wine. Thanks to the recent progresses in the field of paleogenomics[2], we could analyse the organic material consistent with grape pomace at the bottom of these vessels, by extracting and sequencing the DNA using shotgun metagenomics and targeted capture, aiming for enrichment of DNA from fermentation associated microbes.

Biochemical characterization of grape skin cell wall during ripening in relation to Botrytis cinerea susceptibility of two Champagne cultivars

Pectins or pectic polysaccharides are one of the major components in grape skin cell wall, they contribute to physiological processes which determine the integrity and rigidity of grape skin tissue

Observatoire du Grenache en Vallée du Rhône: incidence du terroir sur la diversité analytique et sensorielle des vins

Rhone Valley A.O.C. Vineyards cover more than 70 000 hectares, of wich more than 40 000 plantedwith Grenache N. The Grenache observatory was created in 1995.

Plastic cover film on table grapes from field to cold storage

Plastic film covering is a technique largely used in viticulture to protect table grapes vines from adverse weather conditions and to reduce the negative effects of grapevine fungi disease. Plastic film composition affects solar radiation income inside the covering with effects on sunlight wavelengths in relation to different absorbance and reflectance. The interaction of selected light ranges with vines could influence grape ripening and yield and consequently influence shelf life.