Large branchiopods

Brendonck, Luc; Rogers, D. Christopher; Vanschoenwinkel, Bram; Pinceel, Tom

doi:10.1016/b978-0-12-822362-8.00007-4

Cited by 7 publications

(6 citation statements)

References 139 publications

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“…Similarly, in a study of Lake Nyamithi in 2016, de Necker et al ( 2021) found that Ostracoda, Sigara sp., Micronecta and Berosus sp. are highly abundant in Lake Nyamithi, resulting from their ability to tolerate high levels of salinity (Brendonck et al, 2022;de Necker et al, 2021;Waterkeyn et al, 2008). In a study of saline lakes in northern Tibet, Wen et al (2005) The presence of Tarebia granifera, an extremely invasive species, in Lake Nyamithi is concerning, because of its resistance to salinity, changes in temperature, and drought, providing it a competitive advantage over many native aquatic biota.…”

Section: Discussionmentioning

confidence: 99%

“…The Phongolo River floodplain wetlands featured muddy substrates and abundant aquatic floating vegetation (Dube et al., 2017 ), while Lake Shokwe had minimal aquatic vegetation, mainly consisting of marginal vegetation (van Rooyen et al., 2022 ; Whittington et al., 2013 ). These differences in physical habitat likely contributed to variations in aquatic invertebrate diversity, as greater availability of habitat structures positively correlates with high biodiversity (Brendonck et al., 2022 ; Collier et al., 2016 ; Dube et al., 2022 ; Piedade et al., 2022 ). Furthermore, the aquatic invertebrates in these floodplain systems showed adaptations to low oxygen conditions, using spiracles or plastrons for air breathing.…”

Section: Discussionmentioning

confidence: 99%

“…This lake is of high ecological importance, as 59 species of wetland-dependent birds have been recorded in and around the lake, while it is also home to a large population of hippopotami and the third largest population of crocodiles in South Africa (Calverley & Downs, 2014;de Necker et al, 2021). The lake receives much of its water during the high flow periods through flooding of the Phongolo River following flood releases from the Pongolapoort Dam, while localised rainfall in the catchment and back flooding from the Usuthu River also contribute to its water supply (de Necker, Brendonck, et al, 2022;van Rooyen et al, 2022).…”

Section: Site Descriptionmentioning

confidence: 99%

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Effects of river regulation on aquatic invertebrate community composition: A comparative analysis in two southern African rivers

de Necker,

van Rooyen,

Gerber

et al. 2024

Ecology and Evolution

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While natural floods play a crucial role in shaping the composition of aquatic communities, the most rivers worldwide are regulated or dammed for anthropogenic purposes, resulting in alterations to the biological and chemical composition of these ecosystems. Studies have demonstrated various negative effects of river regulation on aquatic invertebrate communities globally. However, there is a scarcity of research in Africa, despite its vulnerability to anthropogenic impacts. This study aimed to compare aquatic invertebrate communities in the Phongolo River, an impacted regulated river, and the Usuthu River, a less impacted unregulated river, in South Africa. It further aimed to ascertain whether Lake Nyamithi, a naturally saline lake receiving water from both of the aforementioned systems, exhibited a stronger similarity to one of the two rivers in terms of its aquatic invertebrate composition. Aquatic invertebrate and water samples were collected from 2012 to 2018 over several surveys. The Usuthu River demonstrated a diverse and sensitive aquatic invertebrate community, emphasising its high conservation value. The Phongolo River demonstrated effects of anthropogenic impact, with taxa more resilient to changes in water quality and flow compared to the Usuthu River. Mismanagement and excessive water use may lead to the loss of any remaining sensitive aquatic invertebrate communities in this river. The presence of invasive molluscan in the Phongolo River and Lake Nyamithi also poses a threat to the native aquatic invertebrate communities. These invasive species are currently absent from the Usuthu River although other invasive species, such as the Australian redclaw crayfish, are found in both river systems. Lake Nyamithi displayed a unique aquatic invertebrate community, distinct from both rivers and their floodplains. This study provides important baseline information on the Usuthu River's aquatic invertebrates and emphasises the need to maintain adequate water flow in rivers and floodplains to protect biodiversity and sensitive species.

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Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Section: Site Descriptionmentioning

confidence: 99%

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Effects of river regulation on aquatic invertebrate community composition: A comparative analysis in two southern African rivers

de Necker,

van Rooyen,

Gerber

et al. 2024

Ecology and Evolution

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“…In small endorheic temporary wetlands, biological communities are typically comprised of both fully and semiaquatic organisms (Bird et al, 2019; Dalu & Wasserman, 2022). In arid regions, the fully aquatic component is often dominated by crustaceans, most of which produce dormant eggs for reproductive purposes (Brendonck et al, 2022). These include large branchiopods, which typically do not employ direct development strategies, relying entirely on dormant egg production to facilitate population persistence in temporary aquatic ecosystems.…”

Section: Figurementioning

confidence: 99%

“…carry large numbers of viable eggs within their brood pouches (Figure 1B). Indeed, temporary pans are good foraging patches for predators, given their high levels of secondary production, which are often driven primarily by large branchiopods (Brendonck et al, 2022). Pelomedusa subrufa exhibit predatory behavior and consume invertebrates when available, and invertebrate remains were also detected in the fecal samples when screening for dormant eggs.…”

Section: Figurementioning

confidence: 99%