Periphyton biomass on Echinochloa polystachya (H.B.K.) Hitch. of a lake of the Lower Parana River floodplain, Argentina

Spatial and temporal variation of periphyton biomass on Echinochloa polystachya (H.B.K.) Hitch. was studied monthly in a turbid lake of the Lower Parana River floodplain from May 1995 to May 1996. Measures of chlorophyll a, dry weight and ash free dry weight were obtained from material scraped off t...

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Autor principal:	Pizarro, Haydee Norma
Publicado:	1999
Materias:	Biomass Lake Natural substrata Parana River floodplain Periphyton biomass periphyton spatial variation temporal variation Argentina Echinochloa Echinochloa polystachya Polystachya
Acceso en línea:	https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00188158_v397_n_p227_Pizarro http://hdl.handle.net/20.500.12110/paper_00188158_v397_n_p227_Pizarro
Aporte de:	Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires

id	paper:paper_00188158_v397_n_p227_Pizarro
record_format	dspace
spelling	paper:paper_00188158_v397_n_p227_Pizarro2023-06-08T14:39:45Z Periphyton biomass on Echinochloa polystachya (H.B.K.) Hitch. of a lake of the Lower Parana River floodplain, Argentina Pizarro, Haydee Norma Biomass Lake Natural substrata Parana River floodplain Periphyton biomass periphyton spatial variation temporal variation Argentina Echinochloa Echinochloa polystachya Polystachya Spatial and temporal variation of periphyton biomass on Echinochloa polystachya (H.B.K.) Hitch. was studied monthly in a turbid lake of the Lower Parana River floodplain from May 1995 to May 1996. Measures of chlorophyll a, dry weight and ash free dry weight were obtained from material scraped off the stems of the plant. Two sampling sites with different macrophyte cover were selected: Montiel (littoral area of lake Montiel) and Ciego (littoral area of a vegetated environment connected to the lake). Physical and chemical variables were measured at each sampling site in order to characterize the environments. The sampling sites differed: Montiel appeared influenced by inputs from the Parana River, while Ciego was less affected due to the effect of the macrophytes. The influence of the substrata on the periphyton dynamics was evident at both sampling sites. The values of periphytic biomass variables were lower at Ciego station where macrophyte development was more important. Multiple regression analyses performed with the different biomass variables, revealed that a combination of physical-chemical variables could explain the variability of the biomass, both at Ciego and Montiel, confirming that it is difficult to detect a single factor affecting the periphytic community in natural systems. Fil:Pizarro, H. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. 1999 https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00188158_v397_n_p227_Pizarro http://hdl.handle.net/20.500.12110/paper_00188158_v397_n_p227_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	Biomass Lake Natural substrata Parana River floodplain Periphyton biomass periphyton spatial variation temporal variation Argentina Echinochloa Echinochloa polystachya Polystachya
spellingShingle	Biomass Lake Natural substrata Parana River floodplain Periphyton biomass periphyton spatial variation temporal variation Argentina Echinochloa Echinochloa polystachya Polystachya Pizarro, Haydee Norma Periphyton biomass on Echinochloa polystachya (H.B.K.) Hitch. of a lake of the Lower Parana River floodplain, Argentina
topic_facet	Biomass Lake Natural substrata Parana River floodplain Periphyton biomass periphyton spatial variation temporal variation Argentina Echinochloa Echinochloa polystachya Polystachya
description	Spatial and temporal variation of periphyton biomass on Echinochloa polystachya (H.B.K.) Hitch. was studied monthly in a turbid lake of the Lower Parana River floodplain from May 1995 to May 1996. Measures of chlorophyll a, dry weight and ash free dry weight were obtained from material scraped off the stems of the plant. Two sampling sites with different macrophyte cover were selected: Montiel (littoral area of lake Montiel) and Ciego (littoral area of a vegetated environment connected to the lake). Physical and chemical variables were measured at each sampling site in order to characterize the environments. The sampling sites differed: Montiel appeared influenced by inputs from the Parana River, while Ciego was less affected due to the effect of the macrophytes. The influence of the substrata on the periphyton dynamics was evident at both sampling sites. The values of periphytic biomass variables were lower at Ciego station where macrophyte development was more important. Multiple regression analyses performed with the different biomass variables, revealed that a combination of physical-chemical variables could explain the variability of the biomass, both at Ciego and Montiel, confirming that it is difficult to detect a single factor affecting the periphytic community in natural systems.
author	Pizarro, Haydee Norma
author_facet	Pizarro, Haydee Norma
author_sort	Pizarro, Haydee Norma
title	Periphyton biomass on Echinochloa polystachya (H.B.K.) Hitch. of a lake of the Lower Parana River floodplain, Argentina
title_short	Periphyton biomass on Echinochloa polystachya (H.B.K.) Hitch. of a lake of the Lower Parana River floodplain, Argentina
title_full	Periphyton biomass on Echinochloa polystachya (H.B.K.) Hitch. of a lake of the Lower Parana River floodplain, Argentina
title_fullStr	Periphyton biomass on Echinochloa polystachya (H.B.K.) Hitch. of a lake of the Lower Parana River floodplain, Argentina
title_full_unstemmed	Periphyton biomass on Echinochloa polystachya (H.B.K.) Hitch. of a lake of the Lower Parana River floodplain, Argentina
title_sort	periphyton biomass on echinochloa polystachya (h.b.k.) hitch. of a lake of the lower parana river floodplain, argentina
publishDate	1999
url	https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00188158_v397_n_p227_Pizarro http://hdl.handle.net/20.500.12110/paper_00188158_v397_n_p227_Pizarro
work_keys_str_mv	AT pizarrohaydeenorma periphytonbiomassonechinochloapolystachyahbkhitchofalakeofthelowerparanariverfloodplainargentina
_version_	1768545537725825024

Periphyton biomass on Echinochloa polystachya (H.B.K.) Hitch. of a lake of the Lower Parana River floodplain, Argentina

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