Microfitobenton del Canal Mercante (provincia de Buenos Aires ) en dos condiciones hidrológicas

In lotic environments, the erosion-sedimentation processes related to the hydrological conditions differ throughout the hydrological cycle, mainly due to rainfall. These processes can produce disturbances in the phytobenthic community. In canals, the current velocity and the water level are the main...

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Detalles Bibliográficos
Autores principales: Dos Santos, Analía, Casco, María Adela, Claps, María Cristina
Formato: Articulo
Lenguaje:Español
Publicado: 2012
Materias:
Ciencias Naturales
Buenos Aires (Argentina)
Hidrología
fitobenton
perturbaciones
Acceso en línea:http://sedici.unlp.edu.ar/handle/10915/68941
Aporte de:
SEDICI (UNLP) de Universidad Nacional de La Plata
id I19-R120-10915-68941
record_format dspace
institution Universidad Nacional de La Plata
institution_str I-19
repository_str R-120
collection SEDICI (UNLP)
language Español
topic Ciencias Naturales
Buenos Aires (Argentina)
Hidrología
fitobenton
perturbaciones
spellingShingle Ciencias Naturales
Buenos Aires (Argentina)
Hidrología
fitobenton
perturbaciones
Dos Santos, Analía
Casco, María Adela
Claps, María Cristina
Microfitobenton del Canal Mercante (provincia de Buenos Aires ) en dos condiciones hidrológicas
topic_facet Ciencias Naturales
Buenos Aires (Argentina)
Hidrología
fitobenton
perturbaciones
description In lotic environments, the erosion-sedimentation processes related to the hydrological conditions differ throughout the hydrological cycle, mainly due to rainfall. These processes can produce disturbances in the phytobenthic community. In canals, the current velocity and the water level are the main forcing variables that act on benthic communities, promoting changes in their structure, composition and biomass. Sediment samples were collected in the canal Mercante during two hydrological conditions: 1) at the beginning of spring, during a period of low rainfall (September 2009) and 2) in early autumn after a summer period with heavy rains (March 2010) to determine the content of organic matter, total phosphorus, chlorophyll a, and also the abundance of microphytobenthic individuals and cells. Simultaneously, some variables were measured in the water column. We identified two states of the community that could be associated with the phenomena of erosion / deposition related to the effect of water flow. In September the algal community in sediments showed a vertical architecture, mainly constituted by benthic algae among which several species had an aggregated distribution. In March, a decrease of the proportion and number of benthic algae was observed coinciding with the presence of planktonic species in sediments. Some benthic taxa exhibited similar abundances in the two periods and could be consider as tolerant to changes in flow velocity and as typical members of the canal Mercante. In conclusion, hydrological changes could have a significant role on the structure and dynamic of phytobenthon.
format Articulo
Articulo
author Dos Santos, Analía
Casco, María Adela
Claps, María Cristina
author_facet Dos Santos, Analía
Casco, María Adela
Claps, María Cristina
author_sort Dos Santos, Analía
title Microfitobenton del Canal Mercante (provincia de Buenos Aires ) en dos condiciones hidrológicas
title_short Microfitobenton del Canal Mercante (provincia de Buenos Aires ) en dos condiciones hidrológicas
title_full Microfitobenton del Canal Mercante (provincia de Buenos Aires ) en dos condiciones hidrológicas
title_fullStr Microfitobenton del Canal Mercante (provincia de Buenos Aires ) en dos condiciones hidrológicas
title_full_unstemmed Microfitobenton del Canal Mercante (provincia de Buenos Aires ) en dos condiciones hidrológicas
title_sort microfitobenton del canal mercante (provincia de buenos aires ) en dos condiciones hidrológicas
publishDate 2012
url http://sedici.unlp.edu.ar/handle/10915/68941
work_keys_str_mv AT dossantosanalia microfitobentondelcanalmercanteprovinciadebuenosairesendoscondicioneshidrologicas
AT cascomariaadela microfitobentondelcanalmercanteprovinciadebuenosairesendoscondicioneshidrologicas
AT clapsmariacristina microfitobentondelcanalmercanteprovinciadebuenosairesendoscondicioneshidrologicas
bdutipo_str Repositorios
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