Multiple asynchronous drought facets drive Mediterranean natural and cultivated ecosystems.

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Tác giả: Georgie Elias, Ghaleb Faour, Georgia Majdalani, Florent Mouillot, Delphine Renard

Ngôn ngữ: eng

Ký hiệu phân loại:

Thông tin xuất bản: Netherlands : The Science of the total environment , 2025

Mô tả vật lý:

Bộ sưu tập: NCBI

ID: 722592

Drought is a keystone constraint with far-reaching implications for agro-environmental threats. Yet, drought indices are mostly hydro-meteorological or agricultural, obscuring evidence of the key role agro-ecosystem diversity plays in buffering the consequences of regional climatic variability. We then question how contrasted drought facets could differentially drive the functioning of agro-ecosystems, and whether the interannual asynchrony of these facets might prevent multi-crisis events. Here, we examine how a multifaceted characterization of yearly drought events differentially relates to key agro-environmental sectors and test how these drought facets synchronize over Lebanon, a Middle Eastern drought-prone country grappling with socio-economic and political crises. Using parsimonious multiple linear regression (MLR) models, we captured the combined functional roles of six yearly drought facets (duration, onset, offset, drying rate, peak drought day, and mean intensity of episodic rainfall pulses) on major agro-environmental sectors, including winter wheat yield, tree-ring radial growth, and area burned by wildfires. Delayed drought offset and faster spring soil moisture drying rates appeared more closely associated to increased burned areas (R
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