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智利北部沿海阿塔卡马沙漠叶肉质灌木的干旱响应模式。

Patterns of drought response in leaf-succulent shrubs of the coastal Atacama Desert in Northern Chile.

作者信息

Rundel P W, Ehleringer J, Mooney H A, Gulmon S L

机构信息

Department of Ecology and Evolutionary Biology, University of California, 92717, Irvine, USA.

Department of Biology, University of Utah, 84112, Salt Lake City, Utah, USA.

出版信息

Oecologia. 1980 Jan;46(2):196-200. doi: 10.1007/BF00540126.

DOI:10.1007/BF00540126
PMID:28309673
Abstract

Despite the extrame aridity of the coastal Atacama Desert in northern Chile, sparse communities of leaf succulent shrubs and small cacti are regularly present. While most shrub species have small succulent leaves and accumulate high concentrations of salts in their tissues, the variable rooting patterns and mixed dominance of CAM and C species indicates a significant divergence in adaptive strategies. All dominant shrubs are readily surviving extended drought, but some species are much better able than others to maintain active growth and flowering. Regular flowering may not be a prerequisite for shrub population maintenance since large piles of viable seeds are present under the canopies of many species.

摘要

尽管智利北部沿海的阿塔卡马沙漠极度干旱,但仍经常出现由肉质叶灌木和小型仙人掌组成的稀疏群落。虽然大多数灌木物种的叶子肉质小且组织中积累了高浓度的盐分,但不同的根系模式以及景天酸代谢(CAM)植物和C3植物的混合优势表明其适应策略存在显著差异。所有优势灌木都能轻松度过长期干旱,但有些物种比其他物种更能保持活跃生长和开花。定期开花可能不是灌木种群维持的先决条件,因为许多物种的树冠下都有大量 viable seeds。 (注:原文中“viable seeds”未翻译,可能是输入有误,若为“ viable seeds”,可译为“ viable seeds”,若为“ viable seeds”,可译为“有活力的种子” ) (注:原文中“CAM and C species”应明确具体含义,这里按常见理解翻译,若有特定准确信息,翻译需调整 ) (注:原文中“extrame”可能拼写错误,若为“extreme”,译为“极度” ) 尽管智利北部沿海的阿塔卡马沙漠极度干旱,但仍经常出现由肉质叶灌木和小型仙人掌组成的稀疏群落。虽然大多数灌木物种的叶子肉质小且组织中积累了高浓度的盐分,但不同的根系模式以及景天酸代谢(CAM)植物和C3植物的混合优势表明其适应策略存在显著差异。所有优势灌木都能轻松度过长期干旱,但有些物种比其他物种更能保持活跃生长和开花。定期开花可能不是灌木种群维持的先决条件,因为许多物种的树冠下都有大量有活力的种子。 (注:最后调整译文表述,使其更通顺自然 ) 尽管智利北部沿海的阿塔卡马沙漠极度干旱,但仍时常存在由肉质叶灌木和小型仙人掌构成的稀疏群落。大多数灌木物种的叶子肉质且小,其组织中积累了高浓度盐分,不过不同的根系模式以及景天酸代谢(CAM)植物和C3植物的混合优势表明它们在适应策略上存在显著差异。所有优势灌木都能轻松熬过长期干旱,然而有些物种比其他物种更善于保持活跃生长和开花。定期开花或许并非灌木种群维持的必要条件,因为许多物种的树冠下都有大量有活力的种子。

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本文引用的文献

1
Orientation and its consequences for Copiapoa (Cactaceae) in the Atacama Desert.阿塔卡马沙漠中龙爪球属(仙人掌科)的方向及其影响
Oecologia. 1980 Jul;46(1):63-67. doi: 10.1007/BF00346967.
2
Spatial relationships and competition in a Chilean desert cactus.智利沙漠仙人掌的空间关系与竞争
Oecologia. 1979 Dec;44(1):40-43. doi: 10.1007/BF00346395.
3
Carbon isotope ratio measurements of succulent plants in southern Africa.南非多肉植物的碳同位素比率测量
与钠相关的干旱适应性:旱生植物的新见解
Front Plant Sci. 2018 Nov 20;9:1678. doi: 10.3389/fpls.2018.01678. eCollection 2018.
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Orientation and its consequences for Copiapoa (Cactaceae) in the Atacama Desert.阿塔卡马沙漠中龙爪球属(仙人掌科)的方向及其影响
Oecologia. 1980 Jul;46(1):63-67. doi: 10.1007/BF00346967.
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Diurnal and seasonal variations in activity of crassulacean acid metabolism and plant water status in a northern latitude population of Opuntia erinacea.北方地区仙人掌属植物的景天酸代谢和植物水分状况的昼夜和季节性变化。
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Mineral ion composition and osmotic relations of Atriplex confertifolia and Eurotia lanata.密叶滨藜和绵毛优若藜的矿质离子组成及渗透关系
Oecologia. 1972 Mar;11(1):67-78. doi: 10.1007/BF00345711.
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Atmospheric water uptake by an atacama desert shrub.阿塔卡马沙漠一种灌木对大气水分的吸收
Science. 1980 Aug 8;209(4457):693-4. doi: 10.1126/science.209.4457.693.
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A comparison of photosynthetic characteristics of encelia species possessing glabrous and pubescent leaves.具有无毛和有毛叶片的恩塞利娅属植物的光合特性比较。
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