The effect of leaf removal on canopy microclimate, vine performance and grape phenolic composition of Merlot (Vitis vinifera L.) grapes in the continental part of Croatia

•Microclimatic measurements can explain the specific conditions under which grapes ripen•Cooler climatic conditions during grape ripening improved leaf removal efficiency•Vintage and modifications of the canopy microclimate affected the content of important phenols•Control berries experienced higher resveratrol content in a season with more rainfall