Phytoplankton and macroinvertebrate diversity and eco-exergy responses to rainfall diverge in semiarid reservoirs

Álvaro, Érica Luana Ferreira; Menezes, Rômulo S. C.; Severiano, Juliana dos Santos; Molozzi, Joseline

doi:10.1016/j.ecolind.2023.110012

Cited by 2 publications

(2 citation statements)

References 87 publications

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“…The findings indicated a declining trend in species richness across the four terrigenic treatments, sug-gesting that high terrigenic input can diminish its impact on the phytoplankton community, reducing species diver-Effects of extreme rainfall events on phytoplankton community in a subtropical eutrophic lake: a mesocos… Israeli Journal of Aquaculture -Bamidgeh sity. 34 Conversely, the abundance of phytoplankton exhibited an increasing trend across the four terrigenic treatments, indicating that high terrigenic input can stimulate phytoplankton reproduction, consistent with Vizzo et al 35 The dominant species within a community play a crucial role in shaping energy transfer, material cycling, and the overall trajectory of community succession. 36 In the context of lake ecosystems, heavy rainfall events leading to increased nutrient concentrations can disrupt the succession patterns of dominant phytoplankton species.…”

Section: Discussionsupporting

confidence: 70%

Effects of extreme rainfall events on phytoplankton community in a subtropical eutrophic lake: a mesocosm experiment

Zhang,

Li,

Zhang

et al. 2024

Israeli Journal of Aquaculture - Bamidgeh

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The impact of global climate change has led to an increase in extreme rainfall events, causing fluctuations in terrigenic inputs that significantly affect aquatic communities. Lake Changhu, the third-largest freshwater lake in Hubei Province, plays a crucial role as a reservoir of aquatic germplasm resources in the middle reaches of the Yangtze River. In recent years, the lake has experienced a series of extreme rainfall events. In response to recent extreme rainfall events, a 42-day mesocosm experiment was conducted to understand the effect of terrigenic inputs on various aspects of phytoplankton in Lake Changhu, such as species composition, abundance, biomass, diversity, community turnover rates, resource use efficiency, and stability. The experiment involved the application of different terrigenic treatments, including a control group (CK, using lake water), low terrigenic input (LT), medium terrigenic input (MT), and high terrigenic input (HT). The results showed a noticeable shift in phytoplankton composition from a co-dominated state of Chlorophyta and Cyanobacteria in the CK treatment to a Cyanobacteria-dominated state in the other terrigenic treatments. Furthermore, the terrigenic inputs increased phytoplankton abundance, community turnover rates, diversity, and resistance. Comparatively, the diversity index of phytoplankton increased by 82.61%, 73.83%, and 70.41% in the LT, MT, and HT treatments, respectively, in contrast to the CK treatment. However, phytoplankton abundance decreased by 6.99%, 15.55%, and 14.76% in the LT, MT, and HT treatments. Additionally, the resource use efficiency decreased by 1.94%, 5.16%, and 14.19% in the LT, MT, and HT treatments, respectively, compared to the CK treatment. These findings provide valuable insights into monitoring and managing the water ecology in Lake Changhu, offering a scientific basis for implementing effective management strategies.

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Section: Discussionsupporting

confidence: 70%

Effects of extreme rainfall events on phytoplankton community in a subtropical eutrophic lake: a mesocosm experiment

Zhang,

Li,

Zhang

et al. 2024

Israeli Journal of Aquaculture - Bamidgeh

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“…The general habitat preferences of the most abundant species are known, but their trophic and reproductive biology, ecological interactions and sensitivity to anthropogenic activities are largely unknown (Terra et al., 2021). Likewise, benthic macroinvertebrate composition, distribution and traits are little known in the region (Takiya et al., 2016), although their role as water quality indicators in reservoirs has been investigated recently (Álvaro et al., 2023; Jovem‐Azevêdo et al., 2019; Paiva et al., 2023).…”

Section: Methodsmentioning

confidence: 99%

Fish and macroinvertebrates respond differently to seasonal drying in tropical non‐perennial streams

Oliveira,

Hughes,

Terra

2024

Austral Ecology

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Surface water drying challenges the persistence of lotic biological assemblages in non‐perennial streams and rivers. However, the effects of natural hydrological disturbances on an assemblage depend on individual species characteristics. In this study, we investigated the structure and association of fish and macroinvertebrate assemblages during two phases in non‐perennial streams (flowing vs. disconnected pools). We sampled fish and macroinvertebrate assemblages in five non‐perennial stream reaches located in the Caatinga (Brazilian semi‐arid region). Fish species were resistant to hydrological dynamics in the streams. On the other hand, some macroinvertebrate taxa from the flowing phase disappeared, and new taxa colonized the disconnected pools. The absence of lotic insects following flow cessation and the colonization of disconnected pools by lentic taxa facilitated macroinvertebrate assemblages persistence in these dynamic streams. Our study showed that fish and macroinvertebrate assemblages respond differently to the same natural flow cessation, which leads us to predict that flow changes will yield different assemblages, depending on the taxa. Thus, it is crucial to consider multi‐assemblage responses to effectively manage and conserve non‐perennial stream ecosystems in a tropical semi‐arid region.

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Phytoplankton and macroinvertebrate diversity and eco-exergy responses to rainfall diverge in semiarid reservoirs

Cited by 2 publications

References 87 publications

Effects of extreme rainfall events on phytoplankton community in a subtropical eutrophic lake: a mesocosm experiment

Effects of extreme rainfall events on phytoplankton community in a subtropical eutrophic lake: a mesocosm experiment

Fish and macroinvertebrates respond differently to seasonal drying in tropical non‐perennial streams

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