Phycogeography of freshwater phytoplankton: traditional knowledge and new molecular tools

Padisák, Judit; Vasas, Gábor; Borics, Gábor

doi:10.1007/s10750-015-2259-4

Cited by 97 publications

(69 citation statements)

References 174 publications

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“…Dispersal of phytoplankton can be mediated by a variety of physical (wind and water) and biological vectors (aquatic birds, mammals, insects, etc.) whose effectiveness might be different in relation to the geographic distribution of water body in a given area (Incagnone et al, 2015;Padisák et al, 2016). Phytoplankton has therefore a true biogeography with well-defined geographic patterns , which allows for identifying a regional pool of species eventually contributing to establish a metacommunity network.…”

Section: Discussionmentioning

confidence: 99%

“…Many studies exist on the dynamics of toxic phytoplankton species and strains and on the environmental conditions triggering toxic blooms in man-made lakes. However, in complex reservoir networks, the architecture of the system itself, especially the temporal and spatial distribution of inflows and the way in which water is transported (open channels or pipelines), may play a role in modulating the mechanisms that allow massive dispersal and effective colonization of phytoplankton in different reservoirs (for a review, see Padisák et al, 2016).…”

Section: Introductionmentioning

confidence: 99%

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Phytoplankton assemblages in a complex system of interconnected reservoirs: the role of water transport in dispersal

Hu,

Duan,

Peng

et al. 2017

Hydrobiologia

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Phytoplankton in a complex network of reservoirs for drinking water supply was sampled in the dry and flood seasons to understand the role of dispersal through hydrochory and of environmental filters in determining the phytoplankton abundance and composition. The main assumptions tested in the present study are that (i) phytoplankton structure in these waterbodies is strongly dependent on the transportation with the river waters flowing through them and (ii) the importance of this stochastic transportation is decreasing as the connectivity with the river decreases allowing environmental filters to shape phytoplankton structure. The multivariate analysis showed that although phytoplankton was inoculated largely by Pearl River water inputs and inflow among the system, the hydraulic architecture of the reservoir network shaped and modulated the composition and abundance of phytoplankton.

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Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Phytoplankton assemblages in a complex system of interconnected reservoirs: the role of water transport in dispersal

Hu,

Duan,

Peng

et al. 2017

Hydrobiologia

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“…The coccoid green algae are important in ecosystem studies but little information is available about its geographic distributions, even with the improvement of the taxonomy (norton et al 1996;PadiSák et al 2015). It is estimated that exists around 14900 freshwater phytoplankton species (Bourrelly 1990).…”

Section: General Viewmentioning

confidence: 99%

Selenastraceae (Sphaeropleales, Chlorophyceae): rbcL, 18S rDNA and ITS-2 secondary structure enlightens traditional taxonomy, with description of two new genera, Messastrum gen. nov. and Curvastrum gen. nov.

Silva¹,

Böck²,

Sant’Anna³

et al. 2017

Fottea

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The phylogeny of the family Selenastraceae was investigated by light microscopy, 18S rDNA, rbcL and ITS-2 analyses. Various morphological features traditionally used for species and genera identification were investigated. All selenastracean strains studied have naked pyrenoids within the chloroplast, except the genus Chlorolobion, which presented starch envelope. The molecular analyses showed that no morphological criterion considered so far is significant for the systematics of the Selenastraceae, but a set of features may be suitable to identify the genera Ankistrodesmus and Chlorolobion. Phylogenetic analyses showed the genera Monoraphidium, Kirchneriella and Selenastrum were not monophyletic and not distinguishable as separate genera. The polyphyly of the genus Selenastrum led to the description of two new genera, Curvastrum gen. nov and Messastrum gen. nov.

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“…This is partly due to the relatively small dimensions of these organisms, to their cryptic method of dispersal and to the inherent difficulties in recognizing colonization events: little attention is paid to a few new species appearing annually in a list of phytoplankton species, especially when their contribution to total biomass is low and when studies are carried out over a period of time of a few years. More in general, for a long time studying biogeography of microorganisms has been considered worthless due to a supposed cosmopolitanism in their distribution, and only recently microbial ecologists put in discussion the real extent of this pattern (see Fontaneto & Brodie, 2011;Incagnone et al, 2015;Padisák et al, 2015).…”

Section: Introductionmentioning

confidence: 99%

“…As recently reviewed by Incagnone et al (2015), several animals (including humans) contribute to successfully disperse propagules of freshwater organisms in the same size range of living phytoplankton cells/colonies (or their resting stages) among freshwaters. Although biological vectors as aquatic birds may represent more effective dispersal vectors than wind (Rogers, 2014), only a few investigations were found in the literature addressed at considering the role of these animals as dispersal agents for phytoplankton (Kristiansen, 1996(Kristiansen, , 2008Cellamare et al, 2010;Padisák et al, 2015).…”

Section: Introductionmentioning

confidence: 99%

Phytoplankton colonization patterns. Is species richness depending on distance among freshwaters and on their connectivity?

2015

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Phytoplankton assemblages in two Sicilian water bodies were compared to test the hypothesis that colonization events and the successful establishment of a new species in an aquatic ecosystem may depend on the number of water bodies in a given area and on their relative distance. The two ecosystems are both natural, shallow lakes and they are protected sites hosting a rich avifauna. Lake Biviere di Gela is located in an area with a high density of ponds, whereas Lake Pergusa is an isolated waterbody without other aquatic ecosystems in its surroundings. Both lakes had almost disappeared about 10 years ago because of the overexploitation of their main inflows. They were therefore re-filled using water from other catchments and their phytoplankton has been sampled since their re-filling. The results show that Lake Pergusa has maintained a species-poor phytoplankton assemblage since its refilling, whereas Lake Biviere di Gela has been showing progressively richer phytoplankton assemblages during time. The composition of samples collected in nearby located temporary ponds suggests that phytoplankton in this area belongs to a species-rich metacommunity which favored its re-establishment in the lake. Aquatic ecosystems conservation plans cannot thus neglect the role of small waters located in the catchments.

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Phycogeography of freshwater phytoplankton: traditional knowledge and new molecular tools

Cited by 97 publications

References 174 publications

Phytoplankton assemblages in a complex system of interconnected reservoirs: the role of water transport in dispersal

Phytoplankton assemblages in a complex system of interconnected reservoirs: the role of water transport in dispersal

Selenastraceae (Sphaeropleales, Chlorophyceae): rbcL, 18S rDNA and ITS-2 secondary structure enlightens traditional taxonomy, with description of two new genera, Messastrum gen. nov. and Curvastrum gen. nov.

Phytoplankton colonization patterns. Is species richness depending on distance among freshwaters and on their connectivity?

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