Longleaf pine savannas reveal biases in current understanding of savanna biogeography
Longleaf pine savannas reveal biases in current understanding of savanna biogeography
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长叶松稀树草原揭示了当前对稀树草原生物地理学理解的偏见
DOI：
10.1111/geb.13747
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发表时间：
2023
影响因子：
6.4
通讯作者：
Costanza, Jennifer
中科院分区：
文献类型：
--
作者：
Pau, Stephanie;Griffith, Daniel M.;Zampieri, Nicole E.;Costanza, Jennifer
对稀树草原生物地理学的偏见认识 草原和稀树草原存在于多种气候条件下。与干旱和半干旱稀树草原相比，中等稀树草原的树木密度变化很大，尤其容易被误解和研究不足。北美洲历史上拥有广阔的中热带稀树草原，以长叶松为主。长叶松稀树草原可能曾经是北美最大的稀树草原类型，但这些生态系统在全球综合研究中却被忽视了。从全球综合中排除这些“被遗忘的生态系统”会影响我们对稀树草原生物地理学和分布的理解。长叶稀树草原的进化历史和独特气候我们评估了长叶松稀树草原的进化历史和生物地理学。然后，我们将长叶稀树草原的绘图数据与其他大陆上现有的有价值的全球稀树草原合成的绘图数据进行协调。我们的研究表明，与非洲、澳大利亚和南美洲的稀树草原相比，长叶松稀树草原的气候空间截然不同，并且其独特之处在于拥有广泛的树木基底面积。未来的方向人们越来越认识到以草为主的生态系统是古老且生物多样性的，但仍受到威胁和低估。需要对稀树草原生态系统进行新的综合，考虑其全部分布范围，以了解其生态和保护状况。有趣的是，与北美稀树草原及其在中美洲和加勒比地区的亲戚最相似的可能是亚洲稀树草原，其中也包含中火驱动的松树稀树草原，并且在现有的全球综合中同样被忽视。
Biased understanding of savanna biogeographyGrasslands and savannas exist across a wide range of climates. Mesic savannas, with highly variable tree densities, are particularly misunderstood and understudied in comparison to arid and semi‐arid savannas. North America contains historically extensive mesic savannas dominated by longleaf pine. Longleaf pine savannas may have once been the largest savanna type on North America, yet these ecosystems have been overlooked in global syntheses. Excluding these “Forgotten Ecosystems” from global syntheses biases our understanding of savanna biogeography and distribution.Evolutionary history and distinct climate of longleaf savannasWe assessed the evolutionary history and biogeography of longleaf pine savannas. We then harmonize plot data from longleaf savannas with plot data from valuable existing global synthesis of savannas on other continents. We show that longleaf pine savannas occur in a strikingly distinct climate space compared to savannas on Africa, Australia, and South America, and are unique in having wide ranging tree basal areas.Future directionsGrass‐dominated ecosystems are increasingly recognized as being ancient and biologically diverse, yet threatened and undervalued. A new synthesis of savanna ecosystems considering their full range of distributions is needed to understand their ecology and conservation status. Interestingly, the closest analogues to North American savannas and their relatives in Mesoamerica and the Caribbean may be Asian savannas, which also contain mesic fire‐driven pine savannas and have been similarly neglected in existing global syntheses.
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影响因子：
3.7
作者：
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通讯作者：
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影响因子：
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作者：
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DOI：
--
发表时间：
2018
期刊：
影响因子：
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作者：
R. Noss
通讯作者：
R. Noss
稀树草原树木产生的热解燃料可以改造潮湿的稀树草原
影响因子：
6.1
作者：
W. Platt;Darin P. Ellair;J. Huffman;S. E. Potts;B. Beckage
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火灾、气候和物种组成对佛罗里达州不同自然群落的长叶松林分结构和生长率的影响
影响因子：
3.7
作者：
Nicole E. Zampieri;S. Pau
通讯作者：
S. Pau