Tiller population dynamics and production on Spartina densiflora (brong) on the floodplain of the Paraná river, Argentina

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Tiller dynamics and net aerial primary productivity (NAPP) were studied in permanent sample plots of Spartina densiflora at Otamendi Natural Reserve (Buenos Aires Province, Argentina) from June 1996 to December 1997. Emergence, growth, senescence, survival, biomass dynamics, and tiller productivity...

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Autores principales:	Fischer, Sylvia Cristina, Madanes, Nora, Pancotto, Veronica Andrea
Publicado:	2002
Materias:	Non-destructive method Primary production Salt marsh Spartina densiflora Tiller population dynamics biomass floodplain nondestructive testing population dynamics primary production senescence Argentina Buenos Aires [Argentina] Otamendi Natural Reserve Parana River South America Western Hemisphere World
Acceso en línea:	https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_02775212_v22_n2_p347_Vicari http://hdl.handle.net/20.500.12110/paper_02775212_v22_n2_p347_Vicari
Aporte de:	Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires

id	paper:paper_02775212_v22_n2_p347_Vicari
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spelling	paper:paper_02775212_v22_n2_p347_Vicari2023-06-08T15:26:00Z Tiller population dynamics and production on Spartina densiflora (brong) on the floodplain of the Paraná river, Argentina Fischer, Sylvia Cristina Madanes, Nora Pancotto, Veronica Andrea Non-destructive method Primary production Salt marsh Spartina densiflora Tiller population dynamics biomass floodplain nondestructive testing population dynamics primary production senescence Argentina Buenos Aires [Argentina] Otamendi Natural Reserve Parana River South America Western Hemisphere World Spartina densiflora Tiller dynamics and net aerial primary productivity (NAPP) were studied in permanent sample plots of Spartina densiflora at Otamendi Natural Reserve (Buenos Aires Province, Argentina) from June 1996 to December 1997. Emergence, growth, senescence, survival, biomass dynamics, and tiller productivity were analyzed. These population attributes varied seasonally during the first study year, whereas variations were not detected in the subsequent year. Tiller density increased slightly during the first twelve months, attaining 2445 ± 869 tillers·m-2, then remaining constant until the end of the study period. Senescence rate was lower than emergence rate on most sampling occasions. Cohorts originated in different seasons showed distinct survival curves. The life span of tillers was at least 18 months. Green biomass reached maximum values (771 ± 410 g·m-2) during the first year but decreased during the last six months of observations. Annual NAPP was 1450 ± 566 g·m-2·y-1. Average productivity rate was higher in the first year than in the second year. The decrease in the population density of tillers of S. densiflora and the increase in its senescence rate were more likely related to grazing and flooding than to population dynamics. © 2002, The Society of Wetland Scientists. Fil:Fischer, S. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. Fil:Madanes, N. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. Fil:Pancotto, V. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. 2002 https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_02775212_v22_n2_p347_Vicari http://hdl.handle.net/20.500.12110/paper_02775212_v22_n2_p347_Vicari
institution	Universidad de Buenos Aires
institution_str	I-28
repository_str	R-134
collection	Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA)
topic	Non-destructive method Primary production Salt marsh Spartina densiflora Tiller population dynamics biomass floodplain nondestructive testing population dynamics primary production senescence Argentina Buenos Aires [Argentina] Otamendi Natural Reserve Parana River South America Western Hemisphere World Spartina densiflora
spellingShingle	Non-destructive method Primary production Salt marsh Spartina densiflora Tiller population dynamics biomass floodplain nondestructive testing population dynamics primary production senescence Argentina Buenos Aires [Argentina] Otamendi Natural Reserve Parana River South America Western Hemisphere World Spartina densiflora Fischer, Sylvia Cristina Madanes, Nora Pancotto, Veronica Andrea Tiller population dynamics and production on Spartina densiflora (brong) on the floodplain of the Paraná river, Argentina
topic_facet	Non-destructive method Primary production Salt marsh Spartina densiflora Tiller population dynamics biomass floodplain nondestructive testing population dynamics primary production senescence Argentina Buenos Aires [Argentina] Otamendi Natural Reserve Parana River South America Western Hemisphere World Spartina densiflora
description	Tiller dynamics and net aerial primary productivity (NAPP) were studied in permanent sample plots of Spartina densiflora at Otamendi Natural Reserve (Buenos Aires Province, Argentina) from June 1996 to December 1997. Emergence, growth, senescence, survival, biomass dynamics, and tiller productivity were analyzed. These population attributes varied seasonally during the first study year, whereas variations were not detected in the subsequent year. Tiller density increased slightly during the first twelve months, attaining 2445 ± 869 tillers·m-2, then remaining constant until the end of the study period. Senescence rate was lower than emergence rate on most sampling occasions. Cohorts originated in different seasons showed distinct survival curves. The life span of tillers was at least 18 months. Green biomass reached maximum values (771 ± 410 g·m-2) during the first year but decreased during the last six months of observations. Annual NAPP was 1450 ± 566 g·m-2·y-1. Average productivity rate was higher in the first year than in the second year. The decrease in the population density of tillers of S. densiflora and the increase in its senescence rate were more likely related to grazing and flooding than to population dynamics. © 2002, The Society of Wetland Scientists.
author	Fischer, Sylvia Cristina Madanes, Nora Pancotto, Veronica Andrea
author_facet	Fischer, Sylvia Cristina Madanes, Nora Pancotto, Veronica Andrea
author_sort	Fischer, Sylvia Cristina
title	Tiller population dynamics and production on Spartina densiflora (brong) on the floodplain of the Paraná river, Argentina
title_short	Tiller population dynamics and production on Spartina densiflora (brong) on the floodplain of the Paraná river, Argentina
title_full	Tiller population dynamics and production on Spartina densiflora (brong) on the floodplain of the Paraná river, Argentina
title_fullStr	Tiller population dynamics and production on Spartina densiflora (brong) on the floodplain of the Paraná river, Argentina
title_full_unstemmed	Tiller population dynamics and production on Spartina densiflora (brong) on the floodplain of the Paraná river, Argentina
title_sort	tiller population dynamics and production on spartina densiflora (brong) on the floodplain of the paraná river, argentina
publishDate	2002
url	https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_02775212_v22_n2_p347_Vicari http://hdl.handle.net/20.500.12110/paper_02775212_v22_n2_p347_Vicari
work_keys_str_mv	AT fischersylviacristina tillerpopulationdynamicsandproductiononspartinadensiflorabrongonthefloodplainoftheparanariverargentina AT madanesnora tillerpopulationdynamicsandproductiononspartinadensiflorabrongonthefloodplainoftheparanariverargentina AT pancottoveronicaandrea tillerpopulationdynamicsandproductiononspartinadensiflorabrongonthefloodplainoftheparanariverargentina
_version_	1768546492092514304

Tiller population dynamics and production on Spartina densiflora (brong) on the floodplain of the Paraná river, Argentina

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