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Inés O'Farrell
Facultad de Ciencias Exactas y Naturales
PlanktonFloodplainEcologyPhytoplanktonBiology
18Publications
11H-index
408Citations
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Publications 15
Newest
#1Inés O'Farrell (Facultad de Ciencias Exactas y Naturales)H-Index: 11
#2Carolina Motta (Facultad de Ciencias Exactas y Naturales)H-Index: 1
Last. Ruben J. Lombardo (Facultad de Ciencias Exactas y Naturales)H-Index: 6
view all 8 authors...
Abstract The aim of the present research was to summarize the main reasons that explain the distribution of harmful blooms of cyanobacteria in Argentina. It is a large territory with climates ranging from humid tropical to cold temperate. We performed a meta-analysis of the published data and information in technical reports published from 1945 to 2015, and included additional data from personal non-published studies. A total of 122 water bodies affected by planktonic cyanobacterial blooms were ...
1 CitationsSource
In this work, the dynamics and toxicity of Microcystis spp. in Salto Grande reservoir (Uruguay river), as well as the genetic diversity of their toxic populations were assessed in winter and summer during 2013. Cell abundance of Microcystis spp. variated amongst different sites and between seasons, showing a signifcantly higher cell and toxic genotype abundances (copies of mcyE gene) and microcystin-LR concentration during summer. Furthermore, when genetic diversity of toxic Microcystis was analy...
Source
#1Maria Luz Padulles (Facultad de Ciencias Exactas y Naturales)H-Index: 1
#2Visitación Conforti (Facultad de Ciencias Exactas y Naturales)H-Index: 8
Last. Inés O'Farrell (Facultad de Ciencias Exactas y Naturales)H-Index: 11
view all 4 authors...
This paper analyzes the influence of water quality on phytoplankton, focusing on the euglenoid assemblages of a periurban stream in the province of Buenos Aires (Argentina), strongly impacted by urban and industrial wastewater. The ICA water quality index (Beron 1984) calculated for the main channel and its tributaries showed a marked deterioration of the waters and evidenced a clear spatial pattern. In addition, in some of the sampled sites, water quality indicators exceeded the ranges establis...
2 CitationsSource
#1Juan F. Saad (Facultad de Ciencias Exactas y Naturales)H-Index: 5
#2M. Romina Schiaffino (Facultad de Ciencias Exactas y Naturales)H-Index: 1
Last. Irina Izaguirre (Facultad de Ciencias Exactas y Naturales)H-Index: 17
view all 6 authors...
We analysed the structure of the microbial plankton communities of different typesof freshwater environments from the southernmost region of South America (Tierradel Fuego). Water bodies were grouped in four categories: humic lakes, clear oligo-trophic lakes, beaver ponds and steppe shallow lakes, which differed in their nutrientand dissolved organic carbon (DOC) contents. We tested if microbial planktoniccommunities were different among lakes with dissimilar nutrient and DOC concen-trations, an...
17 CitationsSource
#1Melina Devercelli (CONICET: National Scientific and Technical Research Council)H-Index: 9
#2Inés O'Farrell (Facultad de Ciencias Exactas y Naturales)H-Index: 11
The phytoplankton structure along the mainstem of the Lower Salado River (Argentina) was analysed in relation to the environmental variables and the influence exerted by the inflowing waters from the Parana River (via El Vado Stream) and an adjacent floodplain shallow lake, between December 2003 and August 2004. Phytoplankton driving forces were explored using a functional approach. Small phytoplanktonic organisms with high metabolism and well adapted to live in mixed environments dominated (fun...
27 CitationsSource
#1Irina Izaguirre (Facultad de Ciencias Exactas y Naturales)H-Index: 17
#2Haydée Pizarro (Facultad de Ciencias Exactas y Naturales)H-Index: 10
Last. Josep M. Gasol (CSIC: Spanish National Research Council)H-Index: 64
view all 7 authors...
We used multiple approaches to analyze photosynthetic picoplankton (PPP) structure and production in a wetland in the Lower Parana Basin (Argentina). A seasonal field survey was combined with an experimental study to analyze PPP variability under different light conditions. Flow cytometry analyses showed differences in PPP structure among the aquatic environments. Three main picoplankton populations were distinguished: phycocyanin-rich picocyanobacteria (Pcy), picoeukaryote (Peuk) and anaerobic ...
17 CitationsSource
#1Inés O'Farrell (Facultad de Ciencias Exactas y Naturales)H-Index: 11
#2Paula de Tezanos Pinto (Facultad de Ciencias Exactas y Naturales)H-Index: 9
Last. Irina Izaguirre (Facultad de Ciencias Exactas y Naturales)H-Index: 17
view all 3 authors...
This study analyses the influence of the underwater light climate on the morphometric characteristics of the phytoplankton at the population and community levels. The differences in light conditions across the floodplain were mainly defined by the patchiness of floating macrophytes and humic acids concentration. A morphometric response at the community level to the underwater PAR was registered. Sites with strong light constraints were characterised by non-flagellated organisms or with a small p...
41 CitationsSource
#1Paula de Tezanos Pinto (Facultad de Ciencias Exactas y Naturales)H-Index: 9
#2L. U. Z. Allende (Facultad de Ciencias Exactas y Naturales)H-Index: 1
Last. Inés O'Farrell (Facultad de Ciencias Exactas y Naturales)H-Index: 11
view all 3 authors...
The influence of free-floating plants on the structure of natural phytoplankton was assessed using field mesocosms. Poor underwater light climate (natural macrophyte cover and dark mesh treatments) determined the dominance of shade-adapted, slow-growing filamentous and colonial cyanobacteria [S and L 0 functional groups; Reynolds, C. S., Huszar, V., Kruk, C. et al. (2002) Towards a functional classification of the freshwater phytoplankton. J. Plankton Res., 24, 417-428]. Biovolume and chlorophyl...
43 CitationsSource
#1Ana Fazio (Facultad de Ciencias Exactas y Naturales)H-Index: 1
#2Inés O'Farrell (Facultad de Ciencias Exactas y Naturales)H-Index: 11
This study analyzes the phytoplankton structure and dynamics, as well as the main limnological characteristics in Los Coipos Lake, located in the Reserva Ecologica Costanera Sur (Buenos Aires, Argentina). Phytoplankton generic composition was studied before (April–June 1998), during (July 1998–December 1999), and after (January–October 2003) pumping from the Puelche aquifer waters, characterized by extremely high conductivity values. The capacity of natural recovery from salt contamination was a...
5 CitationsSource
#1Guillermo Tell (Facultad de Ciencias Exactas y Naturales)H-Index: 9
#2Inés O'Farrell (Facultad de Ciencias Exactas y Naturales)H-Index: 11
Last. Ruben J. Lombardo (Facultad de Ciencias Exactas y Naturales)H-Index: 6
view all 3 authors...
Summary 1. This study deals with the distribution of euglenoid morphospecies along the length of the Lower Parana River floodplain. Six sites located in the Parana River, Estevez stream and Montiel shallow lake were surveyed monthly from May 1995 to April 1996. 2. Eighty-eight infrageneric taxa were registered though the total density percentage of euglenoids seldom exceeded 15% of total phytoplankton. The increasing species richness towards the lake is mostly the result of a high contribution o...
5 CitationsSource
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