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dc.contributor.author
Rennella, Armando Martin
dc.contributor.author
Quiros, Rolando
dc.date.available
2017-05-17T20:51:45Z
dc.date.issued
2006-12
dc.identifier.citation
Rennella, Armando Martin; Quiros, Rolando; The Effects of Hydrology on Plankton Biomass in Shallow Lakes of the Pampa Plain; Springer; Hydrobiologia; 556; 1; 12-2006; 181-191
dc.identifier.issn
0018-8158
dc.identifier.uri
http://hdl.handle.net/11336/16603
dc.description.abstract
Climatic and hydrological variability is usually high in the Pampa Plain (Argentina). However it has not studied yet how this variability may affect the phytoplankton and zooplankton biomass and community structure in aquatic systems of this region. The main purpose of this study was to assess flushing effects on nutrient and plankton dynamics in two interconnected very shallow lakes of the Pampa Plain. In order to study the impact of hydrology on the plankton biomass and community structure, we compared the summer plankton community among three consecutive years with contrasting hydrological characteristics. Water residence time varied an order of magnitude among years and this variability was correlated to strong changes in physicochemical and biological lake characteristics. Depending on the water discharge level, the hydrological regime within the lakes ranged from lentic to more lotic conditions. Nutrient and phytoplankton biomass were positively related to water discharges. During high flushing periods, nutrients import from intensive agriculture lands leads to a dramatic increase in trophic conditions. On the other hand, macrozooplankton biomass was positively related to water residence time and showed a dramatic decrease during high flushing years. Rotifers biomass was not affected by interannual water discharge variability during the study period. Our results support that in case of lakes with high flushing rates, zooplankton development is dependent on water residence time and that hydrology may have stronger effects on macrozooplankton biomass than top-down control by planktivores.
dc.format
application/pdf
dc.language.iso
eng
dc.publisher
Springer
dc.rights
info:eu-repo/semantics/restrictedAccess
dc.rights.uri
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.subject.classification
Pesca
dc.subject.classification
Agricultura, Silvicultura y Pesca
dc.subject.classification
CIENCIAS AGRÍCOLAS
dc.title
The Effects of Hydrology on Plankton Biomass in Shallow Lakes of the Pampa Plain
dc.type
info:eu-repo/semantics/article
dc.type
info:ar-repo/semantics/artículo
dc.type
info:eu-repo/semantics/publishedVersion
dc.date.updated
2017-05-16T20:36:46Z
dc.journal.volume
556
dc.journal.number
1
dc.journal.pagination
181-191
dc.journal.pais
Alemania
dc.journal.ciudad
Berlín
dc.description.fil
Fil: Rennella, Armando Martin. Universidad de Buenos Aires. Facultad de Agronomia. Departamento de Producción Animal. Cátedra de Sistemas de Producción Acuatica; Argentina
dc.description.fil
Fil: Quiros, Rolando. Universidad de Buenos Aires. Facultad de Agronomia. Departamento de Producción Animal. Cátedra de Sistemas de Producción Acuatica; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Parque Centenario; Argentina
dc.journal.title
Hydrobiologia
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/https://link.springer.com/article/10.1007/s10750-005-0318-y
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/doi/http://dx.doi.org/10.1007/s10750-005-0318-y
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