The Canopy-Forming Alga Ericaria brachycarpa (J.Agardh) Molinari-Novoa & Guiry (Fucales, Phaeophyceae) Shows Seasonal and Depth Adaptation to the Incoming Light Levels

IF 1.4 4区生物学 Q3 MARINE & FRESHWATER BIOLOGY

Cryptogamie Algologie Pub Date : 2021-04-28 DOI:10.5252/cryptogamie-algologie2021v42a6

N. Sant, E. Ballesteros

{"title":"The Canopy-Forming Alga Ericaria brachycarpa (J.Agardh) Molinari-Novoa & Guiry (Fucales, Phaeophyceae) Shows Seasonal and Depth Adaptation to the Incoming Light Levels","authors":"N. Sant, E. Ballesteros","doi":"10.5252/cryptogamie-algologie2021v42a6","DOIUrl":null,"url":null,"abstract":"ABSTRACT The shallow water canopy-forming alga Ericaria brachycarpa (J.Agardh) Molinari-Novoa & Guiry shows higher photosynthetic efficiency (α), maximum photosynthetic rates (Pmax), light at compensation (Ic) and dark respiration (Rd) in individuals collected at the lower depth limit of distribution of the species (20 m) than at shallower depths (2 and 10 m). Photosynthesis at saturation light levels (Psat) does not change in crossed transplants from 3 to 20 and from 20 to 3 m neither after 11 or 90 days. However, production at low light levels (Pb) increased in transplants from 3 to 20 m and decreased in transplants from 20 to 3 m after 90 days. Photosynthesis, both at high and low light levels increased from June to September. Seasonality explained most of the variance (70%) in the values of Psat, whilst transplantation explained 47% of the variance for Pb and Rd. Thus, E. brachycarpa is able to adapt its photosynthetic performances across its depth distribution limits and easily cope with sudden variations in the light environment associated or not with seasonality.","PeriodicalId":51000,"journal":{"name":"Cryptogamie Algologie","volume":"42 1","pages":"67 - 75"},"PeriodicalIF":1.4000,"publicationDate":"2021-04-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"2","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Cryptogamie Algologie","FirstCategoryId":"99","ListUrlMain":"https://doi.org/10.5252/cryptogamie-algologie2021v42a6","RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q3","JCRName":"MARINE & FRESHWATER BIOLOGY","Score":null,"Total":0}

引用次数: 2

Abstract

ABSTRACT The shallow water canopy-forming alga Ericaria brachycarpa (J.Agardh) Molinari-Novoa & Guiry shows higher photosynthetic efficiency (α), maximum photosynthetic rates (Pmax), light at compensation (Ic) and dark respiration (Rd) in individuals collected at the lower depth limit of distribution of the species (20 m) than at shallower depths (2 and 10 m). Photosynthesis at saturation light levels (Psat) does not change in crossed transplants from 3 to 20 and from 20 to 3 m neither after 11 or 90 days. However, production at low light levels (Pb) increased in transplants from 3 to 20 m and decreased in transplants from 20 to 3 m after 90 days. Photosynthesis, both at high and low light levels increased from June to September. Seasonality explained most of the variance (70%) in the values of Psat, whilst transplantation explained 47% of the variance for Pb and Rd. Thus, E. brachycarpa is able to adapt its photosynthetic performances across its depth distribution limits and easily cope with sudden variations in the light environment associated or not with seasonality.

查看原文本刊更多论文

冠层形成藻brachycarpa (j.a agardh) Molinari-Novoa & Guiry (Fucales, Phaeophyceae)对光照水平的季节和深度适应

浅水冠层形成藻短叶藻(Ericaria brachycarpa, j.a agardh) Molinari-Novoa & Guiry表现出较高的光合效率(α)、最大光合速率(Pmax)、在物种分布的较浅深度(2和10 m)处收集的个体在补偿光(Ic)和暗呼吸(Rd)下的光合作用(Psat)在11天或90天后从3到20和从20到3 m的杂交移植物中都没有变化。然而，90 d后，低光照条件下移植物的产量在3 ~ 20 m范围内增加，在20 ~ 3 m范围内下降。从6月到9月，高光照和低光照下的光合作用都有所增加。季节性解释了Psat值的大部分差异(70%)，而移植解释了Pb和Rd值的47%的差异。因此，短叶藻能够在其深度分布范围内适应其光合性能，并且容易应对与季节性相关或无关的光环境的突然变化。

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

Cryptogamie Algologie 生物-海洋与淡水生物学

CiteScore

2.60

自引率

7.70%

发文量

审稿时长

>12 weeks

期刊介绍： Cryptogamie is a fast-track and peer-reviewed journal of international scope publishing in English only. It accepts original papers and review articles on the taxonomy, biology and ecology of all cryptogams. An issue of Cryptogamie may be devoted to a single topic, under the responsibility of guest editor(s). All articles published in Cryptogamie are compliant with the different nomenclatural codes. A copyright assignment will be signed by the authors before publication. Cryptogamie, Algologie accepts articles on systematics as well as ecology and evolution of any kind of algae (including Cyanobacteria).