Epilithic algae from a freshwater stream at Hope Bay, Antarctica

Temporal and spatial variations of the epilithic phycoflora were studied in one of the largest streams at Hope Bay (Antarctic Peninsula) during the summer of 1992/93. A complete floristic inventory was made, and the relative frequencies of each algal taxon were estimated. Periphytic cumulative chlor...

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Detalles Bibliográficos
Publicado:	1996
Materias:	Antarctica chlorophyll a epilithic algae maritime stream Antarctica, Antarctica Peninsula, Hope Bay Chrysococcus rufescens Hydrurus foetidus Leptolyngbya fragilis Phaeogloea mucosa Prasiola crispa
Acceso en línea:	https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_09541020_v8_n2_p161_Pizarro http://hdl.handle.net/20.500.12110/paper_09541020_v8_n2_p161_Pizarro
Aporte de:	Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires

id	paper:paper_09541020_v8_n2_p161_Pizarro
record_format	dspace
spelling	paper:paper_09541020_v8_n2_p161_Pizarro2023-06-08T15:55:47Z Epilithic algae from a freshwater stream at Hope Bay, Antarctica Antarctica chlorophyll a epilithic algae maritime stream epilithic algae maritime stream Antarctica, Antarctica Peninsula, Hope Bay Chrysococcus rufescens Hydrurus foetidus Leptolyngbya fragilis Phaeogloea mucosa Prasiola crispa Temporal and spatial variations of the epilithic phycoflora were studied in one of the largest streams at Hope Bay (Antarctic Peninsula) during the summer of 1992/93. A complete floristic inventory was made, and the relative frequencies of each algal taxon were estimated. Periphytic cumulative chlorophyll a was measured by means of artificial substrata. The stream was a typical maritime Antarctic lotic ecosystem, with evident signs of enrichment by sea-birds. Variability in discharge strongly affected the water chemistry, with the high water level periods characterized by the lowest conductivities and dissolved reactive phosphorus concentrations. Epilithic algal communities predominantly consisted of algal mats or filamentous and foliose forms of Prasiola crispa. Other dominant species were Leptolyngbya fragilis, Hydrurus foetidus, Chrysococcus cl. rufescens and Phaeogloea mucosa. Whereas P. crispa appeared more frequently near to the origin of the stream in Boeckella Lake, Chrysophyceae were better developed towards the mouth. 1996 https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_09541020_v8_n2_p161_Pizarro http://hdl.handle.net/20.500.12110/paper_09541020_v8_n2_p161_Pizarro
institution	Universidad de Buenos Aires
institution_str	I-28
repository_str	R-134
collection	Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA)
topic	Antarctica chlorophyll a epilithic algae maritime stream epilithic algae maritime stream Antarctica, Antarctica Peninsula, Hope Bay Chrysococcus rufescens Hydrurus foetidus Leptolyngbya fragilis Phaeogloea mucosa Prasiola crispa
spellingShingle	Antarctica chlorophyll a epilithic algae maritime stream epilithic algae maritime stream Antarctica, Antarctica Peninsula, Hope Bay Chrysococcus rufescens Hydrurus foetidus Leptolyngbya fragilis Phaeogloea mucosa Prasiola crispa Epilithic algae from a freshwater stream at Hope Bay, Antarctica
topic_facet	Antarctica chlorophyll a epilithic algae maritime stream epilithic algae maritime stream Antarctica, Antarctica Peninsula, Hope Bay Chrysococcus rufescens Hydrurus foetidus Leptolyngbya fragilis Phaeogloea mucosa Prasiola crispa
description	Temporal and spatial variations of the epilithic phycoflora were studied in one of the largest streams at Hope Bay (Antarctic Peninsula) during the summer of 1992/93. A complete floristic inventory was made, and the relative frequencies of each algal taxon were estimated. Periphytic cumulative chlorophyll a was measured by means of artificial substrata. The stream was a typical maritime Antarctic lotic ecosystem, with evident signs of enrichment by sea-birds. Variability in discharge strongly affected the water chemistry, with the high water level periods characterized by the lowest conductivities and dissolved reactive phosphorus concentrations. Epilithic algal communities predominantly consisted of algal mats or filamentous and foliose forms of Prasiola crispa. Other dominant species were Leptolyngbya fragilis, Hydrurus foetidus, Chrysococcus cl. rufescens and Phaeogloea mucosa. Whereas P. crispa appeared more frequently near to the origin of the stream in Boeckella Lake, Chrysophyceae were better developed towards the mouth.
title	Epilithic algae from a freshwater stream at Hope Bay, Antarctica
title_short	Epilithic algae from a freshwater stream at Hope Bay, Antarctica
title_full	Epilithic algae from a freshwater stream at Hope Bay, Antarctica
title_fullStr	Epilithic algae from a freshwater stream at Hope Bay, Antarctica
title_full_unstemmed	Epilithic algae from a freshwater stream at Hope Bay, Antarctica
title_sort	epilithic algae from a freshwater stream at hope bay, antarctica
publishDate	1996
url	https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_09541020_v8_n2_p161_Pizarro http://hdl.handle.net/20.500.12110/paper_09541020_v8_n2_p161_Pizarro
_version_	1768544420510040064

Epilithic algae from a freshwater stream at Hope Bay, Antarctica

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