A comparative ecophysiological study of two forest understory ferns (Dryopteris marginalis and Polystichum acrostichoides) during summer drought and excessive heat
Roger Anderson O.
Abstract:This is a study of the photophysiology of two understory fern species growing on Torrey Cliff, Palisades, N.Y. during the summer of 2022 when the northeast incurred a significant period of drought and elevated temperatures. During the peak period of stress (July and August), mean photosynthesis rates of both species were lower than during more moderate weather in early summer and in autumn. Leaf fluorescence analyses indicated that the mean F v /F m values, combining the data for both species, were fairly simi… Show more
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