Hydraulic traits are not robust predictors of tree species stem growth during a severe drought in a wet tropical forest
Hydraulic traits are not robust predictors of tree species stem growth during a severe drought in a wet tropical forest
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DOI：
10.1111/1365-2435.14235
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发表时间：
2022-11
影响因子：
5.2
通讯作者：
Chris M. Smith‐Marin;Robert Muscarella;Roi Ankori‐Karlinsky;S. Delzon;Samuel L. Farrar;Melissa Salva‐Sauri;Jill Thompson;J. Zimmerman;M. Uriarte
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作者：
Chris M. Smith‐Marin;Robert Muscarella;Roi Ankori‐Karlinsky;S. Delzon;Samuel L. Farrar;Melissa Salva‐Sauri;Jill Thompson;J. Zimmerman;M. Uriarte
1.严重的干旱导致全球许多生态系统，包括热带森林的植物生长减缓和死亡率升高。干旱脆弱性因物种而异，但对热带森林群落这种变化的性质和程度的共识有限。了解物种对干旱的脆弱性需要检查水力特征，因为这些反映了物种为生存干旱而采用的不同策略。2.在这里，我们研究了水力特性和生长减少严重干旱期间的12个常见的木本物种在潮湿的热带森林社区在波多黎各问：Q1。在干旱期间，水力性状在多大程度上可以预测生长下降？我们预计，具有更水力脆弱的木质部和更窄的安全边界（SM P50）的物种
1. Severe droughts have led to lower plant growth and high mortality in many ecosystems worldwide, including tropical forests. Drought vulnerability differs among species, but there is limited consensus on the nature and degree of this variation in tropical forest communities. Understanding species- level vulnerability to drought requires examination of hydraulic traits since these reflect the different strategies species employ for surviving drought. 2. Here, we examined hydraulic traits and growth reductions during a severe drought for 12 common woody species in a wet tropical forest community in Puerto Rico to ask: Q1. To what extent can hydraulic traits predict growth declines during drought? We expected that species with more hydraulically vulnerable xylem and narrower safety margins (SM P50