Comparison of morpho-functional phytoplankton classifications in human-impacted shallow lakes with different stable states

Izaguirre, Irina; Allende, Luz; Escaray, Roberto Ulises; Bustingorry, José; Pérez, Gonzalo L.; Tell, Guillermo

doi:10.1007/978-94-007-5790-5_16

Cited by 17 publications

(30 citation statements)

References 33 publications

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“…Furthermore, their growth can be inhibited by mixing, as was explained by de Tezanos Pinto & Litchman (2010). In agreement with Izaguirre et al (2012), heterocysts in the filamentous dominant Raphidiopsis mediterranea were not observed, probably because its nitrogen requirements were satisfied.…”

Section: Discussionsupporting

confidence: 81%

Life strategists and morpho-functional groups applied to the phytoplankton of a Pampean shallow lake

Ruiz

Donagh

Quaíni³

et al. 2014

New Zealand Journal of Marine and Freshwater Research

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Phytoplankton and environmental variables were studied during a year in a shallow eutrophic lake and its inflow in the 'depressed Pampa' of Argentina. The taxa were classified according to the competitors, stress tolerators, ruderals and intermediate categories (CSR) model and were allocated to morphofunctional groups (MFG). As was expected according to the trophic state, scarce transparency and mixing condition, the R-strategists (several cyanobacteria and pennate diatoms) dominated almost all of the study period. C-strategists were more scarce and favoured by short periods of transparency, whereas only three species were attributed to the S-strategist category. Each MFG was represented by a single species at a time, resulting in a high functional miscellany in this shallow lake. Thus, we can assume that the CSR approach is a useful tool to explain the success of the different species of phytoplankton in this shallow lake.

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Section: Discussionsupporting

confidence: 81%

Life strategists and morpho-functional groups applied to the phytoplankton of a Pampean shallow lake

Ruiz

Donagh

Quaíni³

et al. 2014

New Zealand Journal of Marine and Freshwater Research

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“…More generally, the low discriminatory power of classifications based on a limited number of groups has been highlighted by Izaguirre et al . (), Stanković et al . () and Žutinić et al .…”

Section: Synoptic View and Critical Evaluationsmentioning

confidence: 97%

“…Classification of MBFG , based on seven groups, is closer to the diatom ecological guild approach (three groups; Passy, ) than to either FG or MFG . Morphologically Based Functional Groups can explain large‐scale variations (Abonyi et al ., ) and therefore are suitable for analysing large, ecoregional data sets (Izaguirre et al ., ; Hu, Han & Naselli‐Flores, ; Žutinić et al ., ). At finer regional and temporal scales, functional groupings (either FG or MFG ) apparently perform better (Abonyi et al ., ).…”

Section: Synoptic View and Critical Evaluationsmentioning

confidence: 99%

“…Contrary to the FG classification, MFG does not have a clear habitat characterisation, and investigations in this direction have begun only recently (e.g. Izaguirre et al ., ; Salmaso, Naselli‐Flores & Padisák, ; Gallina et al ., ; Hu et al ., ; Mihaljević et al ., ; Thackeray et al ., ). Since species can be accommodated in several functional groups, MFG classifications can be efficiently used to overcome the problems related to differences in taxonomic accuracy and species identification in different ecosystems (e.g.…”

Section: Synoptic View and Critical Evaluationsmentioning

confidence: 99%

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Functional classifications and their application in phytoplankton ecology

2014

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SUMMARY1. Ecologists often group organisms based on similar biological traits or on taxonomic criteria. However, the use of taxonomy in ecology has many drawbacks because taxa may include species with very different ecological adaptations. Further, similar characters may evolve independently in different lineages. 2. In this review, we examine the main criteria that have been used in the identification of nine modes of classifying phytoplankton non-taxonomically. These approaches are based purely on morphological and/or structural traits, or on more complex combinations including physiological and ecological features. 3. Different functional approaches have proved able to explain some fraction of the variance observed in the spatial and temporal distribution patterns of algal assemblages, although their effectiveness varies greatly, depending on the number and characteristics of functional traits used. The attribution of functional traits to single species or broad groups of species has allowed a few classifications (e.g. Functional Groups, FG) to be used in the assessment of ecological status. 4. We stress that the misuse of functional classifications (by applying them under conditions other than those intended) can have serious consequences for interpreting ecological processes. Assigning functional traits or groups cannot be considered a surrogate for the knowledge of species or ecotypes, and the use of specific traits must always be justified and circumscribed within the limits of ecological questions and hypotheses. 5. An important future challenge will be to integrate advances in molecular genetics, metabolomics and physiology with more conventional traits; this will form the basis of the next generation of functional classifications.

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“…These freshwater waterbodies are shallow and commonly eutrophic environments (Quirós & Drago, 1999), characterised by a high limnological variability (Quirós et al, 2002a, b;Allende et al, 2009;Izaguirre et al, 2012). Such variability is strongly influenced by their hydrologic dynamics (Quirós et al, 2002a;Torremorell et al, 2007) driven not only by regional rainfalls but also by water table regimes, which maintain and expand lake areas (Bohn et al, 2011), whereas low precipitation periods along with evaporation and infiltration promote their drying.…”

Section: Introductionmentioning

confidence: 95%

Fish assemblage of a Pampean shallow lake, a story of instability

et al. 2014

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Pampean lakes are characterised by the alternation of flood and drought periods, but little is known about its effects on fish assemblage in an extended temporal scale. This study analyses the temporal variability of the fish assemblage in Chascomús Lake, and discusses the role of temperature and precipitation as potential drivers of fish composition shifts. Data acquisition was based on experimental fishing performed from 1999 to 2013 and from historical fishing records. Two alternative fish assemblage configurations were identified by cluster analysis. Odontesthes bonariensis, Parapimelodus valenciennisand Cyphocharax voga were the dominant species, which accounted for 70-80% of the relative abundance. The species O. bonariensis showed temporal fluctuations in its representativeness, changing from dominant to almost absent, whereas C. voga and P. valenciennis changed their abundance following a similar pattern along time. When historical data were considered, Platanichthys platana appeared as the fourth most relevant species. Precipitation, critical temperatures and fish mortalities were identified as the main drivers of species abundance shifts. This study highlights the importance of long-term assessments to understand the influence of climatic factors and the need to maintain or restore natural ecological processes as the basis to support dynamic sustainable fisheries in Pampean shallow lakes.

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Comparison of morpho-functional phytoplankton classifications in human-impacted shallow lakes with different stable states

Cited by 17 publications

References 33 publications

Life strategists and morpho-functional groups applied to the phytoplankton of a Pampean shallow lake

Life strategists and morpho-functional groups applied to the phytoplankton of a Pampean shallow lake

Functional classifications and their application in phytoplankton ecology

Fish assemblage of a Pampean shallow lake, a story of instability

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