Zooplankton

Paggi, Susana José de; Paggi, Juan C.

doi:10.1007/978-3-540-70624-3_9

Cited by 39 publications

(16 citation statements)

References 31 publications

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“…The high biodiversity with 61% of littoral species was found among E. crassipes in the water free area, the fact was also mentioned by Poi de Neiff & Carignan (1997), LansacTôha et al (2004) andJosé Paggi &Paggi (2007). Also, the low species richness in the pond with cyanobacteria bloom was found in the zooplankton of aquatic natural communities (Frutos 1993, Poi de Neiff et al 1999) of subtropical lakes of Argentina.…”

Section: Species Richness and Similaritysupporting

confidence: 48%

“…The low zoo-heleoplankton abundance in the pond with E. crassipes was previously reported in the littoral area with a predominance of the same aquatic macrophytes (José de Paggi & Paggi 2007, Frutos 1993. The low zoo-heleoplankton density was indirectly related to abiotic and biotic condition.…”

Section: Zooplankton Structurementioning

confidence: 91%

“…The composition and seasonal variation were related to the increase of dominant species. Although this is important, it was recorded that the Rotifera usually are the most abundant community in tropical and subtropical reservoirs and lakes (Sendazc et al 2006, José de Paggi & Paggi 2007, except in the isolate lake from the Paraná River floodplain where Crustacea were the dominant group (Frutos 1993(Frutos , 1996. Punctually the decrease in zooplankton density in this artificial pond was caused by heavy rains that deposited phytoplankton in the bottom and probably caused sediment remotion.…”

Section: Environmental Variablesmentioning

confidence: 99%

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Zoo-heleoplankton structure in three artificial ponds of North-eastern Argentina

Frutos¹,

Carnevali²

2007

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Abstract:The aim of the present study was to compare the abundance and species richness of zoo-heleoplankton bigger than 53 µm in an annual cycle under similar climate conditions in three artificial ponds, in order to observe the changes during an annual cycle. Samples were taken monthly from June 1993 to July 1994 in Corrientes, Argentina. The first pond (A) was covered an 80% by Eichhornia crassipes (Mart.), the second one (B) with bloom of Microcystis aeruginosa (Kurtzing) and the last one (C) with organic matter deposited in the bottom. The water was more acidic at pond A, and the water at pond B contained more dissolved oxygen concentration than the water at the other two ponds. The zoo-heleoplankton densities varied between 20-1728 ind.l -1 at pond A, 42-4082 ind.l -1 at pond B and 148-2447 ind.l -1 at pond C. The maximum zoo-heleoplankton abundance was found in the pond with cyanobacteria bloom during Autumn 1994 and the minimum abundance was found in the one with a predominance of E. crassipes. The rank of species richness was pond A > pond B > pond C. Rotifera was the most abundant group in pond A whereas the larval stages of Copepoda were abundant in the other two ponds. Anuraeopsis navicula Rousselt 1910 was the dominant population in the pond with macrophytes prevalence. Brachionus calyciflorus Pallas 1776 and larval stage of Copepoda had variable proportions in the pond with cyanobacteria bloom. Thermocyclops decipiens (Kiefer 1929) was present during the annual cycle only in the pond with organic matter deposited in the bottom. The succession of taxa was observed in the pond with coverage of aquatic macrophytes and with cyanobacteria bloom. Differences in species richness and low similarity in zoo-heleoplankton between ponds were determined by differences in the quality of the water in relation to the presence of macrophytes, cyanobacteria, organic matter deposited in the bottom and fish predation. Multiple regression analysis (stepwise) revealed that water transparency, dissolved oxygen and conductivity were the environmental variables that explained more than 42% of variability in the abundance of the dominant species. Rev. Biol. Trop. 56 (3): 1135-1147. Epub 2008 September 30.

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Section: Species Richness and Similaritysupporting

confidence: 48%

Section: Zooplankton Structurementioning

confidence: 91%

Section: Environmental Variablesmentioning

confidence: 99%

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Zoo-heleoplankton structure in three artificial ponds of North-eastern Argentina

Frutos¹,

Carnevali²

2007

RBT

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“…Zooplankton is constituted by numerous groups (mainly rotifers, cladocerans and copepods), which can show great diversity (José de Paggi, ; Paggi, ; Maia‐Barbosa et al ., ). Among the factors affecting its richness and diversity, studies indicate the influence of disturbance caused by a changing macrophyte cover (Fontanarrosa et al ., ) or by frequent flooding (Paidere, ), water level variations (Crome and Carpenter, ; Borges and Pedrozo, ), system connectivity (Jose de Paggi and Paggi, ; Lansac‐Tôha et al ., ), macrophytes presence (Meerhoff and Mazzeo, ; Meerhoff et al ., ; Maia‐Barbosa et al ., ) and architecture (Meerhoff et al ., ; Lucena‐Moya and Duggan, ).…”

Section: Introductionmentioning

confidence: 99%

Effect of Spatial Heterogeneity on Zooplankton Diversity: A Multi-Scale Habitat Approximation in a Floodplain Lake

2013

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Environmental heterogeneity is an essential quality of ecosystems as it has important implications in community structure. Macrophytes are a main component of environmental heterogeneity in floodplain lakes, and their dynamics are highly influenced by water level changes. In this context, we analysed at different spatial scales the relationship among hydrological variations, environmental heterogeneity associated to macrophytes and zooplankton regional diversity (γ diversity) in a South American floodplain lake adjacent to the Paraná River, and we also compared the local zooplankton diversity (α diversity) among the different environments that comprised the lake heterogeneity. At very low waters, the environmental heterogeneity was reduced as the lake was mainly limited to open water areas with low zooplankton diversity. At high waters, the profuse vegetation development (emergent and free‐floating), in mixed or homogeneous patches, determined a higher lake environmental heterogeneity with enhanced regional zooplankton diversity; littoral species increased over limnetic ones. Zooplankton α diversity was higher in environments with free‐floating macrophytes than in those without these plants. The structural complexity in the water column provided by plant roots would be closely related to the enhanced diversity found under free‐floating mats. This study contributes to the knowledge on the effects of strong water level variations on environmental heterogeneity, which is strongly associated to macrophytes and on zooplankton diversity, and highlights the role of free‐floating plants as diversity hosts and ‘key structures’ in floodplain lakes. Copyright © 2013 John Wiley & Sons, Ltd.

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“…The backwaters presented a high species richness (159) considering that, in previous surveys, rotifers and microcrustaceans amounted to 421 species in the plankton of 36 environments of the Upper Paraná River floodplain, including lakes, channels, tributaries, the Paraná River, as well as the studied backwaters . Nonetheless, the recorded pattern of a greater contribution of rotifers to the total species richness has been determined in several studies on wetland environments . One explanation for this is that the plankton from both pelagic and littoral regions can be observed to contain planktonic and tychoplanktonic species, especially in lentic and shallow environments.…”

Section: Discussionmentioning

confidence: 90%

Structure of the zooplankton communities in macrophytes stand of a Neotropical floodplain (the Paraná River, Brazil)

Colares

Bonecker

Simões

et al. 2013

Internat. Rev. Hydrobiol.

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This study evaluated the structure of the invertebrate community in plankton of the littoral region of three backwaters of the Upper Paraná River floodplain close to macrophyte stands during different hydrological periods. Samplings were conducted using vertical hauls with a plankton net (68 μm). A total of 81 rotifer taxa and 78 microcrustacean taxa were identified. Both rotifer and microcrustaceans presented higher richness and abundance during the high water period. On the other hand, the highest species diversity for both groups was observed in the low water period. The dissimilarities in composition between sampling sites within each backwater were greater in the high water period. However, the results for beta diversity highlighted a higher dissimilarity of composition and abundance between backwaters in the low water period. The results suggested a stronger temporal influence on the attributes of rotifer and microcrustacean communities, thus stressing the preponderance of the flood pulse in these environments.

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Zooplankton

Cited by 39 publications

References 31 publications

Zoo-heleoplankton structure in three artificial ponds of North-eastern Argentina

Zoo-heleoplankton structure in three artificial ponds of North-eastern Argentina

Effect of Spatial Heterogeneity on Zooplankton Diversity: A Multi-Scale Habitat Approximation in a Floodplain Lake

Structure of the zooplankton communities in macrophytes stand of a Neotropical floodplain (the Paraná River, Brazil)

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