The fall of the summer truffle: Recurring hot, dry summers result in declining fruitbody production of Tuber aestivum in Central Europe

Abstract

Global warming is pushing populations outside their range of physiological tolerance.According to the environmental envelope framework, the most vulnerable populations occur near the climatic edge of their species' distributions. In contrast, populations from the climatic center of the species range should be relatively buffered against climate warming. We tested this latter prediction using a combination of linear mixed effects and machine learning algorithms on an extensive, citizen-scientist generated dataset on the fruitbody productivity of the Burgundy (aka summer) truffle (Tuber aestivum Vittad.), a keystone, ectomycorrhizal tree-symbiont occurring on a wide range of temperate climates. T. aestivum's fruitbody productivity was monitored at 3-week resolution over up to 8 continuous years at 20 sites distributed in the climatic center of its European distribution in southwest Germany and Switzerland. We found that T. aestivum fruitbody production is more sensitive to summer drought than would be expected from the breadth of its species' climatic niche. The monitored populations occurring nearly

Compound events of wet and dry extremes: Identification, variations, and risky patterns

“…The ignorance of other climatic and anthropogenic factors could compromise the accuracy of identified extremes (Brunner et al 2022, Stuart-Smith et al 2021. For example, snow and temperature are other crucial indices influencing the behaviors of HMEs referencing snow-melting floods and hot-dry events in Germany (Krug et al 2020, Merz et al 2020, Steidinger et al 2022, Zscheischler and Fischer 2020. At the same time, the formation and impact of HMEs can be either alleviated or aggravated by human activities (Jehanzaib et al 2020, Pirnia et al 2019a, 2019b, Shao and Kam 2020, typically reservoir regulation, agricultural irrigation, and land surface changes caused by urbanization processes.…”

A mesterséges intelligencia szerepe a fenntartható gazdasági döntésekben

“…Nem csak a francia szarvasgomba, hanem például a Magyarországon is honos nyári szarvasgomba (Tuber aestivum) termesztési lehetőségeivel, és a klímaváltozás által befolyásolt termőképességével kapcsolatban folyamatos kutatások zajlanak. (Steidinger et al, 2022). A lengyelországi szarvasgombafogyasztás, termesztés jelenleg reneszánszát éli, a 20. század végén újra a figyelem központjába került, támogató kezdeményezések jöttek létre például a nyári szarvasgomba termesztési lehetőségeivel kapcsolatban (Rosa-Gruszecka et al, 2017).…”

Verification study on how macrofungal fruitbody formation can be predicted by artificial neural network

“…There are few studies, especially for the economically important fungal species that examined the fruitbody formation of a particular species in a natural environment as a function of temperature and precipitation. For example, the water deficit in the soil due to dry summers, together with the high temperature, resulted in a decrease in fruitbody formation in some truffle ( Tuber ) species 55 , 56 . Our findings may open the possibility towards the integration of other fungal species into the estimation of their occurrence based on selected weather parameters with the highest R 2 scores.…”