terclim by ICS banner
IVES 9 IVES Conference Series 9 Local adaptation tools to ensure the viticultural sustainability in a changing climate

Local adaptation tools to ensure the viticultural sustainability in a changing climate

Abstract

Over the next century, the projected changes in regional climates are expected to have important consequences on wine production. They vary from short-term impacts on wine quality and style, to long-term issues such as varietal suitability and the economic sustainability of wine growing regions. To contextualize the possible temporal and spatial climate change impacts, this study first assessed the past and expected (RCP 4.5 and RCP 8.5) viticultural potential of 24 vineyards sites representative of the middle Loire Valley, namely sites with a weakly, moderately and strongly weathered bedrock having various water holding capacities. Simple terrain tools were then applied to illustrate the likely trends in possible wine quality and style for these 24 sites. While wine quality is shaped by natural features as soil properties, winegrowers’ perennial and annual decision-making inevitably play also an important role. Using a water balance model available for the 24 sites, the effect of different soil management practices on vine performance as well as wine quality and style were evaluated. To validate this applied approach using terrain tools, the final part of the study looked at support precision tools, namely vegetation indices derived from satellite imagery. These indices allow to monitor and estimate the vine water status of the different sites and therefore the delineation of viticultural zones with similar features. As a global changing climate denotes an increase in uncertainty, both in time and over space, these local adaptation tools allow winegrowers to better understand the past and expected viticultural potentialities of their vineyards. These tools should also enhance the resilience of winegrowers as they adopt no-regret strategies that are place specific.

DOI:

Publication date: May 31, 2022

Issue: Terclim 2022

Type: Poster

Authors

Etienne Neethling1, Cécile Coulon-Leroy1, Etienne Goulet2,3 and Francois Gallet4

1ESA, USC 1422 INRA-GRAPPE, Ecole Supérieure d’Agricultures, Angers, France
2IFV, Institut Français de la Vigne et du Vin, Beaucouzé, France
3InterLoire, Interprofessions des Vins du Val de Loire, Tours, France
4Scanopy, Quincy, France

Contact the author

Keywords

climate change, adaptation tools, middle Loire Valley, conceptual model, wine identity

Tags

IVES Conference Series | Terclim 2022

Citation

Related articles…

Effects of soil and climate on wine style in Stellenbosch: Sauvignon blanc

Une étude a été menée pendant neuf ans sur deux vignes non-irriguées de Sauvignon blanc commercialisés, plantées à différentes localités (A et B) dans le district de Stellenbosch. Deux parcelles expérimentales, situées sur deux formations géologiques différentes, ont été identifiées au sein de chaque vignoble. A chaque localité une des

Read More

Polyphenol content examination of Tokaji Aszú wines

We must state that two conditions above are only prevalent in the case when the processed grapes are full or over ripened, besides following the Tokaj wines preparation criterions (grape variety, soil, microclimate, vintage, etc.). These two conditions mentioned before were followed up only sensory based analysis up to now, altough the study of chemical idetified compounds which confirms these are obviuos.

Read More

Characterization of a unique mannan from Starmerella bacillaris for protein stabilization in white wine

Yeast cell wall components are valuable biotechnological tools with applications in oenology and beyond [1], [2].

Read More

Moderate wine consumption – part of a balanced diet or a health risk?

Consumption of wine/alcoholic beverages remains a topic of great uncertainty and controversy worldwide. The term “no safe level” dominates the media communication and policy ever since population studies in 2018 [1,2] were published, which denied the existence of a J-curve and suggested that ANY consumption of an alcoholic beverage is harmful to health. The scientific evidence accumulated during the past decades about the health benefits of moderate wine consumption, were questioned and drinking guidelines considered to be too loose.

Read More

Ripening of cv. Cabernet Sauvignon grapes: polysaccharides fractions evolution and phenolic extractability

Polysaccharides and more specifically pectins, make up a significant portion of the cell wall material of the plant cells including the grapes. During the fruit ripening the associated softening is related to the breakdown of the cell wall polysaccharides. During this process, it is expected that polysaccharides that are soluble in red wine will be formed influencing its texture. Anthocyanins are responsible for the wine color and tannins for the astringency, body and bitterness of the wine. In the skins, these compounds are located in the cell vacuoles and the barrier that conditions their extractability is the skin cell wall that may determine the mechanical resistance, the texture and the ease of processing berries. The aim of this work was study the evolution of the polysaccharides and the anthocyanin and tannin extractability during the ripening period in Cabernet Sauvignon grapes, trying to correlate these variables.

Read More