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...
Guardado en:
| Autores principales: | , , |
|---|---|
| Formato: | JOUR |
| Materias: | |
| Acceso en línea: | http://hdl.handle.net/20.500.12110/paper_09541020_v8_n2_p161_Pizarro |
| Aporte de: |
| id |
todo:paper_09541020_v8_n2_p161_Pizarro |
|---|---|
| record_format |
dspace |
| spelling |
todo:paper_09541020_v8_n2_p161_Pizarro2023-10-03T15:51:40Z Epilithic algae from a freshwater stream at Hope Bay, Antarctica Pizarro, H. Izaguirre, I. Tell, G. 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. JOUR info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by/2.5/ar 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 Pizarro, H. Izaguirre, I. Tell, G. 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. |
| format |
JOUR |
| author |
Pizarro, H. Izaguirre, I. Tell, G. |
| author_facet |
Pizarro, H. Izaguirre, I. Tell, G. |
| author_sort |
Pizarro, H. |
| 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 |
| url |
http://hdl.handle.net/20.500.12110/paper_09541020_v8_n2_p161_Pizarro |
| work_keys_str_mv |
AT pizarroh epilithicalgaefromafreshwaterstreamathopebayantarctica AT izaguirrei epilithicalgaefromafreshwaterstreamathopebayantarctica AT tellg epilithicalgaefromafreshwaterstreamathopebayantarctica |
| _version_ |
1782028148113670144 |