The inshore benthic macroinvertebrates of Lake Nabugabo, Uganda: seasonal and spatial patterns

Efitre, Jackson; Chapman, Lauren J.; Makanga, B.

doi:10.1080/15627020.2001.11657139

Cited by 26 publications

(25 citation statements)

References 18 publications

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“…In contrast, Dvorak and Best (1982) argued that macrophytes do not affect considerably the taxonomic composition of bottom fauna. Efitre et al (2001) and Merritt et al (2002) even observed an impoverishment of the taxonomic richness of the zoobenthos living in Nuphar stands. However, Efitre et al (2001) observed drastic oxygen depletions near the bottom caused by nymphaeids, and Merritt et al (2002) conducted their study in a river, where abiotic conditions and zoobenthos composition may be very different than in lakes.…”

Section: Discussionmentioning

confidence: 90%

“…Efitre et al (2001) and Merritt et al (2002) even observed an impoverishment of the taxonomic richness of the zoobenthos living in Nuphar stands. However, Efitre et al (2001) observed drastic oxygen depletions near the bottom caused by nymphaeids, and Merritt et al (2002) conducted their study in a river, where abiotic conditions and zoobenthos composition may be very different than in lakes. These examples show that any general conclusions concerning the impact of macrophytes on bottom fauna should be drawn with particular care.…”

Section: Discussionmentioning

confidence: 90%

“…However, most of the existing studies have focused on epiphytic fauna (Van der Velde and Hiddink 1987;Dvorak 1996;Kornijów and Ś cibior 1999a, b;Van de Meutter et al 2008) whereas only a few have explicitly mentioned zoobenthos, clearly distinguishable from epiphytic fauna (Kornijów et al 1990); when zoobenthos had been taken into consideration, it was usually included only as a minor aspect (Moss and Timms 1989;Kornijów and Moss 1997;Efitre et al 2001). A noteworthy exception is the study by Brock and Van der Velde (1996), who specifically studied the impact of Nymphoides peltata on zoobenthos, and suggested that the sediment dwelling fauna constitutes an important component in nymphaeid-dominated systems.…”

Section: Introductionmentioning

confidence: 99%

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Is Nuphar lutea (L.) Sm. a structuring factor for macrozoobenthos and selected abiotic parameters of water and bottom sediments throughout the year?

2010

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Studies on the role of nymphaeids in water bodies are uncommon, despite the fact that they often dominate in eutrophic lakes. Therefore, we decided to evaluate the effect of a nymphaeid Nuphar lutea on its environment. We hypothesised that its presence can increase the diversity and abundance of zoobenthos, as well as modify selected abiotic parameters, both during the growing season (in the presence of leaves) and outside it (with underground structures only). Three pairs of stations (within and outside Nuphar stands) were established in two shallow, eutrophic lakes and sampled monthly during an entire year. Zoobenthos taxon richness, biodiversity and total density were higher among nymphaeids throughout the year. On the other hand, total zoobenthos biomass was not affected by the presence of plants. Most macroinvertebrates reached higher densities within Nuphar stands, the most abundant being Polypedilum nubeculosum, Potamothrix bavaricus, Ephemeroptera and Ceratopogonidae.In turn, Potamothrix hammoniensis, Chaoborus sp. and Tanypus sp. were more abundant outside the stands. Other taxa, including the dominants (Chironomus sp., Procladius spp., Einfeldia dissidens, Valvata piscinalis), were not affected by the presence of Nuphar. Nuphar did not influence water temperature, oxygen concentration, and conductivity, though sediments within the stands exhibited lower water content and higher proportion of large organic particles. Thus, Nuphar effect on macroinvertebrates was probably direct, through increased habitat heterogeneity, physical stability of substratum and food availability. Our study has shown that nymphaeids, despite their structural distinctness, can affect positively bottom fauna similarly to other morphological groups of plants.

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Section: Discussionmentioning

confidence: 90%

Section: Discussionmentioning

confidence: 90%

Section: Introductionmentioning

confidence: 99%

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Is Nuphar lutea (L.) Sm. a structuring factor for macrozoobenthos and selected abiotic parameters of water and bottom sediments throughout the year?

2010

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“…Diversity indices provide more information than simply the number of species present, that is, they account for some species being rare and others being common hence they serve as valuable tools that enable biologists and water managers to quantify diversity in a community and describe its numerical structure (Brown and Lomolino, 1998). Studies by Mwabvu and Sasa (2009) also showed a positive correlation between Physidae (Bulinus africanus) and conductivity (r = 0.56) while Efitre et al (2001) reported that the Uganda lakes with higher conductivity and pH showed greater taxon richness and abundance of Mollusca. Therefore, high conductivity levels could have had an effect on Mollusca diversity in the Malilangwe Reservoir as it has been shown to be great importance for Mollusca shells (Mwabvu and Sasa, 2009).…”

Section: Discussionmentioning

confidence: 99%

Macroinvertebrate communities associated with littoral zone habitats and the influence of environmental factors in Malilangwe Reservoir, Zimbabwe

Dalu

Clegg

Nhiwatiwa

2012

Knowl. Managt. Aquatic Ecosyst.

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Key-words:Macroinvertebrates, diversity, Malilangwe reservoir, macrophyte cover, conductivity, water levelThe aim of our study was to investigate macroinvertebrate communities so as to understand factors and processes structuring macroinvertebrate communities in a small reservoir, Malilangwe reservoir over seven months (April to October). Sampling was performed by active sweep netting and searching soil sediments. Water temperature, conductivity, dissolved oxygen, pH, ammonia, nitrogen, phosphorus, chemical oxygen demand and macrophyte cover were determined. In total, forty-two macroinvertebrate families belonging to 10 orders were identified amongst 13 macrophyte species and sediments. Thiaridae and Physidae (Mollusca) were the dominant and most abundant taxa (57.71%) and there were followed by the Hemiptera (27.31%). High indices for sites 1 to 3 for the Simpsons index, the Shannon-Weaver index and evenness were recorded, while low indices were observed for sites 4 to 5, with significant differences being observed among the study site using the Kruskal-Wallis ANOVA test (p < 0.05). Redundancy Analysis revealed that among environmental factors, hydrologically linked parameters such as conductivity, water level and macrophyte cover had the strongest influence on macroinvertebrate distribution.

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“…This is often related to the scarcity of molluscs that act as an intermediate host of this parasite. It could be connected to the low level of ions, especially calcium, which is needed by molluscs for the development of their calcareous shells (efitre et al 2001;. In 2004 the lake and its surroundings were designated as a RAMSAR-site (protected area).…”

Section: Introductionmentioning

confidence: 99%

Desmids from Lake Nabugabo (Uganda) and adjacent peat bogs.

Geest¹,

Coesel²

2012

Fottea

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Abstract:In 2006 the desmid flora of Lake Nabugabo and some adjacent peat bogs was studied. All in total some 108 taxa were identified. Fourteen taxa, most of them being only known from the African continent, are discussed in detail. Six taxa are newly described: Euastrum gemmatum var. quadrituberosum, Micrasterias stuhlmannii var. nabugabonum, Cosmarium nabugabonum, Xanthidium thomassonii, Staurodesmus eckertii var. africanus and Staurastrum capitulum var. foersteri. The morphological variation found in Staurastrum longicolle is discussed in the light of possible speciation of desmids in a limnetic environment.

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The inshore benthic macroinvertebrates of Lake Nabugabo, Uganda: seasonal and spatial patterns

Cited by 26 publications

References 18 publications

Is Nuphar lutea (L.) Sm. a structuring factor for macrozoobenthos and selected abiotic parameters of water and bottom sediments throughout the year?

Is Nuphar lutea (L.) Sm. a structuring factor for macrozoobenthos and selected abiotic parameters of water and bottom sediments throughout the year?

Macroinvertebrate communities associated with littoral zone habitats and the influence of environmental factors in Malilangwe Reservoir, Zimbabwe

Desmids from Lake Nabugabo (Uganda) and adjacent peat bogs.

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