Filtering effect of temporal niche fluctuation and amplitude of environmental variations on the trait-related flowering patterns: lesson from sub-Mediterranean grasslands

摘要: Timing of flowering is a critical component community assembly, but how plant traits respond to heterogeneity resources has been identified mostly through observations spatial variations. Thus, we performed trait-based phenological study in sub-Mediterranean grasslands assess the importance temporal variation species assemblage processes. We found that early have allowing for slow resource acquisition and storage rapid growth rate. Instead, mid- late-flowering exhibited sets strategies devoted minimizing water loss by evapotranspiration or aimed at maximizing species’ competitive ability, thanks rate more efficient acquisition, conservation use. Our findings were consistent with fluctuation niche theory. observed amplitude environmental fluctuations influences type number positively filtered system. In fact, most productive grasslands, highest indicator trait states reflecting competition light. Results seem also indicate plays role differentiation richness within community, filtering composition same direction, as formerly proved resources.