Microhabitat and morphometric variation in two species of Prasiola (Prasiolales, Chlorophyta) from streams in central Mexico

Rodríguez, Rocío Ramírez; Jiménez, Josefina; Delgado, Carlos Martorell

doi:10.1007/s10452-006-9068-9

Cited by 14 publications

(10 citation statements)

References 21 publications

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“…Rodriguez et al . ), most species are either terrestrial (Rindi et al . ) and maritime, or occur in the supralittoral zone of rocky marine habitats (e.g.…”

Section: Introductionmentioning

confidence: 99%

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Physiological ecology of photosynthesis in Prasiola stipitata (Trebouxiophyceae) from the Bay of Fundy, Canada

Kang

Scrosati

Garbary

2013

Phycological Research

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Summary The physiological ecology of Prasiola stipitata was examined in situ from two supralittoral sites in the Bay of Fundy (Nova Scotian, Canada) during November 2011, when the population was undergoing major expansion. Photosynthetic parameters (effective quantum yield, ΦPSII, maximum quantum yield, Fv/Fm, and relative electron transport rate, rETR) were evaluated using chlorophyll fluorescence of PSII. A largely shaded and continuously moist population showed no change in ΦPSII from one hour after sunrise to sunset in which natural irradiance varied between 3 and 300 μmol photons m−2 s−1. High irradiance (up to 1800 μmol photons m−2 s−1) had no apparent negative impacts on either quantum yield or rETR, but high desiccation in the field reduced quantum yield to almost zero. When thalli were brought into the laboratory, no change in Fv/Fm was observed up to 60% dehydration; however, there was a steep decline in Fv/Fm between 60% and 85% dehydration. Thalli showed complete recovery of Fv/Fm within one hour of reimmersion in seawater after 2 days of desiccation. After 15 days of desiccation full recovery required 24 h and after 30 days of desiccation thalli showed only partial recovery. These observations confirm the adaptation to photosynthesis in high irradiances and the rapid recovery following extreme desiccation observed in other Prasiola species.

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“…Rodriguez et al . ), most species are either terrestrial (Rindi et al . ) and maritime, or occur in the supralittoral zone of rocky marine habitats (e.g.…”

Section: Introductionmentioning

confidence: 99%

“…While some species are fully aquatic and grow in freshwater streams (e.g. Rodriguez et al 2007), most species are either terrestrial (Rindi et al 1999) and maritime, or occur in the supralittoral zone of rocky marine habitats (e.g . Friedmann 1969;Anderson & Foster 1999).…”

Section: Introductionmentioning

confidence: 99%

Physiological ecology of photosynthesis in Prasiola stipitata (Trebouxiophyceae) from the Bay of Fundy, Canada

Kang

Scrosati

Garbary

2013

Phycological Research

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“…The alternative, the application of the name Prasiola crispa to the whole group, would lead to major (and in our opinion unnecessary) difficulties in species circumscription. Besides Antarctic Prasiola , this group includes Prasiola borealis and P. mexicana , two species that differ substantially from P. crispa both in terms of morphology and habitat (Reed 1902, Setchell and Gardner 1920a,b, Printz 1964, Rodrìguez and Jiménez 2005, Rodrìguez et al. 2007, Moniz et al.…”

mentioning

confidence: 99%

MOLECULAR PHYLOGENY OF ANTARCTIC PRASIOLA (PRASIOLALES, TREBOUXIOPHYCEAE) REVEALS EXTENSIVE CRYPTIC DIVERSITY¹

Moniz

Rindi

Novis

et al. 2012

Journal of Phycology

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Trebouxiophytes of the genus Prasiola are well known in Antarctica, where they are among the most important primary producers. Although many aspects of their biology have been thoroughly investigated, the scarcity of molecular data has so far prevented an accurate assessment of their taxonomy and phylogenetic position. Using sequences of the chloroplast genes rbcL and psaB, we demonstrate the existence of three cryptic species that were previously confused under Prasiola crispa (Lightfoot) Kützing. Genuine P. crispa occurs in Antarctica; its presence was confirmed by comparison with the rbcL sequence of the type specimen (from the Isle of Skye, Scotland). Prasiola antarctica Kützing is resurrected as an independent species to designate algae with gross morphology identical to P. crispa but robustly placed in a separate lineage. The third species is represented by specimens identified as P. calophylla (Carmichael ex Greville) Kützing in previous studies, but clearly separated from European P. calophylla (type locality: Argyll, Scotland); this alga is described as P. glacialis sp. nov. The molecular data demonstrated the presence of P. crispa in Maritime and Continental Antarctica. P. antarctica was recorded from the Antarctic Peninsula and Shetland Islands, and P. glacialis from the Southern Ocean islands and coast. Such unexpected cryptic diversity highlights the need for a taxonomic reassessment of many published Antarctic records of P. crispa. The results also indicate that marine species of Prasiola form a well-supported monophyletic group, whereas the phylogenetic diversity of freshwater species is higher than previously suspected (at least three separate lineages within the genus include species living in this type of environments).

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“…La primera categoría (G1) reunió ocho especies: dos de algas macroscópicas y seis diatomeas típicas de sitios oligotróficos (CH y TR), y en un 50 % coincide con descripciones previas de ríos fríos de alta montaña y agua poco mineralizada (León-Tejera et al 2003, Potapova et al 2004, Soininen et al 2004, Tornés et al 2007, Ramírez et al 2007, Bojorge et al 2010. Las excepciones fueron Navicula minuscula, Navicula rhynchocephala, Nitzschia incospicua y Staurosirella pinnata, las cuales se describen en una amplia variedad de ríos y con tolerancia a la contaminación, por lo que son especies tolerantes.…”

Section: Discussionunclassified

Estudio Del Valor Indicador De Las Comunidades De Algas Bentónicas: Una Propuesta De Evaluación Y Aplicación en El Río Magdalena, Ciudad De México

Jiménez

Rodríguez

Bojorge-García

et al. 2016

Rev. Int. Contam. Ambie.

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The application and development of environmental laws governing watershed management requires identification of biological indicators, parameters and measures to establish its ecological status, for which the present study aims to characterize the ecological indicator value of stream benthic algae in an urban area of Mexico City. Six sites of the Magdalena river were studied in the most contrasting seasons: drywarm, rainy and dry-cold. At each site the physicochemical parameters of water were recorded and 10 samples were collected: Five with visible algal growths and five with diatoms. The environmental quality of each site was determined by the trophic status and its confirmation with the richness and benthic algal diversity, through a canonical correspondence analysis and the calculation of the indicator value of species (IndVal). According to the trophic status, three groups of sites were recognized. The first group (G1) was assessed as reference of the oligotrophic conditions and presented 11 species with the highest IndVal, protruding: Encyonema silesiacum, Gomphonema parvulum, Navicula cryptocephala, Planothidium lanceolatum, Vaucheria bursata, Placoma regulare and Nostoc parmelioides. A second group (G2) was associated with 15 species considered detectors, which were tolerant to increased nutrients in at least one season, such as Diatoma mesodon and Prasiola mexicana. The third group (G3) included sites with species that had a wide range of tolerance to pollution: Fistulifera saprophila, Nitzschia minuta, Nitzschia palea, Nitzschia recta and Phormidium autumnale. The species IndVal of Magdalena River has established reference sites of good environmental quality and those that are altered by human activities, therefore they are recommended as the first step in a methodological proposal for a long-term biomonitoring through a biological index.

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Microhabitat and morphometric variation in two species of Prasiola (Prasiolales, Chlorophyta) from streams in central Mexico

Cited by 14 publications

References 21 publications

Physiological ecology of photosynthesis in Prasiola stipitata (Trebouxiophyceae) from the Bay of Fundy, Canada

Physiological ecology of photosynthesis in Prasiola stipitata (Trebouxiophyceae) from the Bay of Fundy, Canada

MOLECULAR PHYLOGENY OF ANTARCTIC PRASIOLA (PRASIOLALES, TREBOUXIOPHYCEAE) REVEALS EXTENSIVE CRYPTIC DIVERSITY¹

Estudio Del Valor Indicador De Las Comunidades De Algas Bentónicas: Una Propuesta De Evaluación Y Aplicación en El Río Magdalena, Ciudad De México

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Microhabitat and morphometric variation in two species of Prasiola (Prasiolales, Chlorophyta) from streams in central Mexico

Cited by 14 publications

References 21 publications

Physiological ecology of photosynthesis in Prasiola stipitata (Trebouxiophyceae) from the Bay of Fundy, Canada

Physiological ecology of photosynthesis in Prasiola stipitata (Trebouxiophyceae) from the Bay of Fundy, Canada

MOLECULAR PHYLOGENY OF ANTARCTIC PRASIOLA (PRASIOLALES, TREBOUXIOPHYCEAE) REVEALS EXTENSIVE CRYPTIC DIVERSITY1

Estudio Del Valor Indicador De Las Comunidades De Algas Bentónicas: Una Propuesta De Evaluación Y Aplicación en El Río Magdalena, Ciudad De México

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MOLECULAR PHYLOGENY OF ANTARCTIC PRASIOLA (PRASIOLALES, TREBOUXIOPHYCEAE) REVEALS EXTENSIVE CRYPTIC DIVERSITY¹