Morphoanatomy and leaf biomass in Espeletia standleyana A.C.Sm. and Espeletia santanderensis A.C.Sm. in a northeastern Colombian paramo

IF 2.3 3区生物学 Q2 PLANT SCIENCES

Alpine Botany Pub Date : 2025-07-14 DOI:10.1007/s00035-025-00332-4

Jimmy Reyes, Miguel Murcia, Fermín Rada, Emoelio Mantilla, Patricia Ochoa

{"title":"Morphoanatomy and leaf biomass in Espeletia standleyana A.C.Sm. and Espeletia santanderensis A.C.Sm. in a northeastern Colombian paramo","authors":"Jimmy Reyes, Miguel Murcia, Fermín Rada, Emoelio Mantilla, Patricia Ochoa","doi":"10.1007/s00035-025-00332-4","DOIUrl":null,"url":null,"abstract":"<div>The adaptive responses of Espeletia standleyana and E. santanderensis populations in a paramo in Northeastern Colombia (3350 m a.s.l.), were studied to characterize their spatial segregation. Their anatomical, morphofunctional and leaf biomass characteristics were determined and compared. We found that many traits such as depth of the stomatal crypts, number of vascular bundles, leaf and peduncle xylem vessel diameters, thickness of the mesophyll, leaf area, rosette height and diameter, leaf water content, leaf area index, and leaf biomass were significantly higher in E. standleyana (P< 0.05). Meanwhile, the diameter of the vascular bundles, width of stomatal crypts, number of leaves, specific leaf area, and percentage of sclerophylly were higher in E. santanderensis (P<0.05). Multifactorial segregation indicated highly differential expressions in their morphofunctional and leaf biomass characteristics, evidencing adaptations to their microhabitats. E. standleyana showed xeromorphic characters in response to the greater ambient fluctuations typical of the paramo, while E. santanderensis responded with scleromorphic traits related to lower soil organic matter and water content, characteristic of the high Andean forest-paramo ecotone. The high spatial heterogeneity of the paramos allows the development of microclimatic and edaphic mosaics that determine population segregation of these growth forms.</div>","PeriodicalId":51238,"journal":{"name":"Alpine Botany","volume":"135 2","pages":"261 - 273"},"PeriodicalIF":2.3000,"publicationDate":"2025-07-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s00035-025-00332-4.pdf","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Alpine Botany","FirstCategoryId":"99","ListUrlMain":"https://link.springer.com/article/10.1007/s00035-025-00332-4","RegionNum":3,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"PLANT SCIENCES","Score":null,"Total":0}

引用次数: 0

Abstract

The adaptive responses of Espeletia standleyana and E. santanderensis populations in a paramo in Northeastern Colombia (3350 m a.s.l.), were studied to characterize their spatial segregation. Their anatomical, morphofunctional and leaf biomass characteristics were determined and compared. We found that many traits such as depth of the stomatal crypts, number of vascular bundles, leaf and peduncle xylem vessel diameters, thickness of the mesophyll, leaf area, rosette height and diameter, leaf water content, leaf area index, and leaf biomass were significantly higher in E. standleyana (P< 0.05). Meanwhile, the diameter of the vascular bundles, width of stomatal crypts, number of leaves, specific leaf area, and percentage of sclerophylly were higher in E. santanderensis (P<0.05). Multifactorial segregation indicated highly differential expressions in their morphofunctional and leaf biomass characteristics, evidencing adaptations to their microhabitats. E. standleyana showed xeromorphic characters in response to the greater ambient fluctuations typical of the paramo, while E. santanderensis responded with scleromorphic traits related to lower soil organic matter and water content, characteristic of the high Andean forest-paramo ecotone. The high spatial heterogeneity of the paramos allows the development of microclimatic and edaphic mosaics that determine population segregation of these growth forms.

查看原文本刊更多论文

紫檀的形态解剖学和叶片生物量。桑坦德螺（eseletia santanderensis）。在哥伦比亚东北部的帕拉莫

研究了哥伦比亚东北部地区（3350 m a.s.l.）一处paramo中，standleyana和E. santanderensis种群的适应反应，以表征它们的空间分离。测定并比较了它们的解剖、形态功能和叶片生物量特征。结果表明，紫菀的气孔隐窝深度、维管束数量、叶和花梗木质部导管直径、叶肉厚度、叶面积、莲座高度和直径、叶含水量、叶面积指数和叶生物量显著高于紫菀（P< 0.05）。同时，桑坦德兰的维管束直径、气孔隐窝宽度、叶片数、比叶面积和硬叶百分率均高于桑坦德兰（P<0.05）。多因子分离表明，它们在形态功能和叶片生物量特征上的表达存在高度差异，表明它们对微生境的适应。standleyana对环境波动的响应表现为旱型特征，而santanderensis对土壤有机质和含水量较低的响应表现为硬型特征，这是高安第斯森林-草甸交错带的特征。paramos的高度空间异质性使得小气候和土壤马赛克的发展决定了这些生长形式的种群隔离。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

求助全文

约1分钟内获得全文求助全文

来源期刊

Alpine Botany PLANT SCIENCES-

CiteScore

5.10

自引率

18.50%

发文量

审稿时长

>12 weeks

期刊介绍： Alpine Botany is an international journal providing a forum for plant science studies at high elevation with links to fungal and microbial ecology, including vegetation and flora of mountain regions worldwide.