Consideraciones sobre la comunidad de diatomeas en relación a gradientes de altitud y salinidad en humedales de la Puna y los Altos Andes (Catamarca y Jujuy, Argentina)

IF 0.6 4区生物学 Q4 PLANT SCIENCES

Boletin De La Sociedad Argentina De Botanica Pub Date : 2019-11-26 DOI:10.31055/1851.2372.v54.n4.23902

C. Seeligmann, N. Maidana

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引用次数: 3

Abstract

Background and Aims: In the Puna and Prepuna Argentina there is an important number of high altitude wetlands from purely sweet to frankly hyperhaline. This contribution aimed to integrate the information collected in eight years of study (1998 and 2005) and analyze the distribution of taxa along gradients of height (2600-4700 m asl) and salinity (0.2-104 g L -1 ). M&M: We analyzed the diatoms found in our previous surveys of 57 wetlands located in the provinces of Catamarca and Jujuy between 2340 and 4683 m asl. Results: We identified 73 genera of diatoms with 375 infrageneric taxa and many of them recorded for the first time in the country (29) or in the region of our study (331). The best genera represented in terms of number of species were Nitzschia (43), Navicula (37), Pinnularia (21), Surirella (17), Planothidium (15), Halamphora (13) Craticula (12), 2 Amphora and Stauroneis 10). In the oligohaline wetlands, specific richness fluctuated between 7 and 69, mesohaline between 18 and 54 and polyhaline between 29 and 49. Regarding the height, between 4,301-4,500 m asl, there was a significant decrease in the number of species. Conclusions: The specific richness does not seem to have a direct relation with the altitude and salinity, reason why we postulate that other factors have influence on the diversity in the environments of high altitude analyzed. In this contribution, we report new ranges of tolerance to salinity and height for many taxa.

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Puna和los Altos Andes湿地(Catamarca和Jujuy，阿根廷)硅藻群落与海拔和盐度梯度的关系

背景和目的:在阿根廷的普纳和普普una，有大量的高海拔湿地，从纯甜到高盐。本论文旨在整合1998年和2005年8年的研究资料，分析分类群沿海拔(2600 ~ 4700 m)和盐度(0.2 ~ 104 g L -1)梯度的分布。M&M:我们分析了之前在卡塔马卡省和胡胡伊省的57个湿地调查中发现的硅藻，这些湿地位于海拔2340至4683米之间。结果:共鉴定出硅藻73属375个亚属分类群，其中许多为国内首次记录(29个)或本研究地区首次记录(331个)。种数最多的属依次为Nitzschia(43种)、Navicula(37种)、Pinnularia(21种)、Surirella(17种)、Planothidium(15种)、Halamphora(13种)、Craticula(12种)、Amphora(2种)和steroneis(10种)。低盐湿地的比丰富度在7 ~ 69之间波动，中盐湿地在18 ~ 54之间波动，多盐湿地在29 ~ 49之间波动。在海拔4301 ~ 4500 m之间，物种数量明显减少。结论:特定丰富度似乎与海拔和盐度没有直接关系，因此我们假设其他因素对高海拔环境的多样性有影响。在这篇文章中，我们报道了许多分类群对盐度和高度的新耐受范围。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Boletin De La Sociedad Argentina De Botanica PLANT SCIENCES-

CiteScore

1.00

自引率

33.30%

发文量

审稿时长

>12 weeks

期刊介绍： Bol. Soc. Argent. Bot. publishes original scientific works from the whole spectrum of Plant Biology (structure, anatomy, development, physiology, cytology, genetics, evolution, ecology, paleobotany, palynology, ethnobotany, etc.) in the diverse vegetable organisms and related groups (mycology, ficology, lichenology, briology, etc.), both in basic and applied aspects. Taxonomic works (of systematics, phylogeny, monographs, revisions, lectotypifications, nomenclatural acts, descriptions of taxa), phytogeographic and phytosociological works (survey and classification of vegetation at different spatial scales and without restriction of methodological approaches) are considered for publication. Contributions that address complete phytogeographic units or sub-units and those that fill gaps in knowledge of vegetation in little-known territories are especially welcome. Extensions of geographical areas are published only when it comes to new citations for a country. Checklists and lists of annotated plants are not published. Articles submitted for publication must be original and must not have been submitted to another publisher or previously published (print or electronic format). Submissions of papers already published in another language will not be accepted (autoplagio for translation).