Zooplankton functional diversity as an indicator of a long‐term aquatic restoration in an Amazonian lake

Josué, Iollanda I. P.; Sodré, Elder de Oliveira; Setubal, Rayanne Barros; Cardoso, Simone Jaqueline; Roland, Fábio; Figueiredo‐Barros, Marcos Paulo; Bozelli, Reinaldo Luiz

doi:10.1111/rec.13365

Cited by 16 publications

(9 citation statements)

References 77 publications

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“…We used a trait‐based approach to evaluate the efficacy of wetland restoration in supporting macroinvertebrate functional diversity in South‐West Spain. Functional traits have been used previously to measure restoration success in other aquatic systems and taxa (Español et al., 2015; Josué et al., 2021), but in our unique study of a Mediterranean restoration we partitioned total functional beta diversity into its turnover and nestedness components, and explored how environmental and spatial variables affected the dissimilarities of the restored area. We found some aspects of alpha functional diversity were still lower in new ponds than in reference sites 6–7 years after restoration, resulting in contrasting mechanisms affecting their contributions to the regional functional beta diversity.…”

Section: Discussionmentioning

confidence: 99%

Functional diversity of macroinvertebrates as a tool to evaluate wetland restoration

Coccia

Almeida

Green

et al. 2021

Journal of Applied Ecology

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Ecological restoration of aquatic ecosystems has become widespread in recent decades. Although the recovery of biodiversity in restored wetlands has been studied from a taxonomic perspective, our knowledge of how functional biodiversity recovers remains poorly understood. We studied the functional diversity of macroinvertebrate communities in 32 Mediterranean temporary ponds 6–7 years after their creation during a restoration in South‐West Spain, and compared them with 10 natural reference sites during two consecutive hydroperiods. We compared alpha functional diversity indices, and the individual contributions of new ponds and reference sites to the regional functional beta diversity, as well as to its turnover and nestedness components. We also investigated the influence of environmental and spatial variables on the dissimilarities of functional beta diversity and its components between new ponds and reference sites. Alpha functional diversity in new ponds was lower than in reference sites. Although the contribution of new ponds to the regional functional beta diversity was similar to that of reference sites, the latter contributed more to functional turnover while new ponds contributed more to functional nestedness. Dispersal limitation coupled with environmental filtering structured the functional variation in communities between new ponds and reference sites, but their relative importance differed between beta components. New ponds can hold species with unique functional compositions, but their contribution to the regional functional beta diversity was mostly due to trait losses with respect to reference sites. Synthesis and applications. Considering different aspects of functional diversity of invertebrate communities can help elucidate the processes and mechanisms through which ecosystems recover following restoration. We encourage the use of trait‐based approaches to identify trends in processes and patterns that can guide future wetland restoration projects.

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Section: Discussionmentioning

confidence: 99%

Functional diversity of macroinvertebrates as a tool to evaluate wetland restoration

Coccia

Almeida

Green

et al. 2021

Journal of Applied Ecology

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“…Interpretation of a relationship between total nutrient concentrations and PhyBM (chlorophyll-a or biovolume) is problematic because nutrients are typically locked up in cells; the relationships may be consequential, at least in part, rather than causative (Kosten et al 2012). We expected an opposite trend for TP in the IA because consistent signs of recovery are continuing due to the natural contribution of the flood-plain area and the restoration of the igapó forest neighboring the lake IA (Bozelli et al 2000, Josué et al 2021 The apparent inconsistency in the negative TP-PhyBM relationship must be analyzed, considering the extreme drought in 2015-2016, unprecedented in the last 100 years in the Amazon. The drought led to anomalously low-water levels and the highest temperature in the 21 st century, due to El Niño years (Marengo et al 2018).…”

Section: Predictorsmentioning

confidence: 98%

“…The silt increased the inorganic turbidity of the system, forming a layer above the sediment, and damaging some of the igapó, a marginal periodically flooded vegetation (Bozelli et al 2000). Then, the ecosystem structure and function, from viruses to the forest, were impaired (Anésio et al 1997, Huszar 2000, Roland et al 2002, Leal et al 2005, Lin & Caramaschi 2005, Barros et al 2010, Dias et al 2012, Scarano et al 2018, Josué et al 2021.…”

Section: Introductionmentioning

confidence: 99%

“…Currently, both programs show signs of recovery of the impacted area. For instance, i) there was an increase in organic matter on the sediments (Bozelli et al 2000, Josué et al 2021; ii) accumulated detritus from aquatic macrophytes on the sediment in the littoral zone formed an organic layer, impeding the resuspension of the tailings and increased nutrient availability in the impacted area ; and iii) the number of zoobenthos groups increased in the impacted area, related to nutrient availability and turbidity reduction (Fonseca & Esteves 1999, Bozelli et al 2000.…”

Section: Introductionmentioning

confidence: 99%

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Phytoplankton Biomass Increases in a Silt-Impacted Area in an Amazonian Flood-Plain Lake Over 15 Years

et al. 2022

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Tailings from bauxite mining in Porto Trombetas (Pará state, Central Amazonia, Brazil) was discharged (1979–1989) into Batata Lake affecting about 30% of its area. The lake belongs to a clear-water flood-plain system along the Trombetas River, a tributary of the Amazon River. Siltation is the main perceived factor impacting aquatic and flooded communities. Besides natural regeneration, a program to restore a section of igapó forest in the impacted area (IA) has been conducted since 1991. Decreased light is the main factor reducing total phytoplankton biomass (PhyBM) in IA. We hypothesized that PhyBM in IA increases over time because of the improvement of the underwater light conditions due to the natural regeneration and restoration. We sampled quarterly PhyBM and limnological variables (depth, transparency, temperature, pH, conductivity, dissolved oxygen, turbidity, suspended solids, total Kjeldahl nitrogen, and total phosphorus), over 15 years (2005–2019) at eight sampling sites in the two areas (N = 349). We also obtained daily climatic and hydrologic data. PhyBM was higher in NIA than in IA. The temporal trend in the annual mean of PhyBM increased significantly over time only in the IA, approximating the NIA values, confirming our general hypothesis. The increase of PhyBM in the IA was negatively related to the residual light attenuation caused by non-phytoplankton turbidity and to total phosphorus, and positively to air temperature and site depth (p < 0.05; Marginal r2 = 0.18; Conditional r2 = 0.29). Instead, in NIA, PhyBM was explained only by the increase in air temperature (p < 0.05; Marginal r2 = 0.15; Conditional r2 = 0.34). We concluded that the PhyBM in the IA positively responds to the synergy between increasing light availability, air temperature, and site depth, and decreasing total phosphorus concentrations, regardless of hydrologic phase.

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“…Environmental variables, such as water turbidity, have shown a negative effect on the functional diversity of microcrustaceans, with the predominance of traits, such as herbivorous trophic group, small filterfeeding Cladocera and asexual reproduction (Josu e et al 2021). Turbidity, combined with the depth of aquatic environments, has caused changes in the functional traits of microcrustaceans, mainly related to the feeding type, life span, reproduction mode and escape from predators (Braghin et al 2020).…”

Section: Introductionmentioning

confidence: 99%

Alternance of alternative stable states influence the functional diversity of microcrustaceans in a shallow subtropical lake

Martins

Albertoni

2022

Austral Ecology

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Shallow lakes in subtropical climate regions may have a clear water state with a predominance of submerged or floating macrophytes and a turbid water state with a predominance of phytoplankton. The relationship between microcrustaceans and these changes in alternative states is still incipient in the literature. And to better understand these relationships, the functional approach is an excellent tool. Thus, the present work seeks to test the hypothesis that changes in alternative stable states over time reflect the variability of composition and functional diversity of microcrustaceans. For this, samples of microcrustaceans collected in a subtropical shallow lake, which underwent alternate state changes in the period to 2000-2014, were used. Our results demonstrate a variation in composition and functional diversity among alternative states, thus supporting our hypothesis. In periods of clear water with a predominance of floating macrophytes, we found a greater functional diversity and richness of genera. This result may be associated with several factors such as greater habitat heterogeneity and lower predation pressure. The lowest values of functional diversity found in periods of turbid waters with predominance of phytoplankton and periods of clear waters with submerged macrophytes are related to the dominance of functional traits, such as scraper feeding type, herbivorous/omnivorous trophic group, littoral habitat and asexual reproduction. These traits are functional features of most Ostracoda genera, a taxonomic group abundant in these two alternative states. The predominance of this group may be related to the environmental characteristics of these periods, such as the high vegetation cover and the availability of niches unoccupied by more sensitive species, since most Ostracoda have high environmental tolerance. We conclude that the functional traits approach combined with taxonomic groups respond to temporal variations of alternative stable states and are important tools to detect environmental changes.

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Zooplankton functional diversity as an indicator of a long‐term aquatic restoration in an Amazonian lake

Cited by 16 publications

References 77 publications

Functional diversity of macroinvertebrates as a tool to evaluate wetland restoration

Functional diversity of macroinvertebrates as a tool to evaluate wetland restoration

Phytoplankton Biomass Increases in a Silt-Impacted Area in an Amazonian Flood-Plain Lake Over 15 Years

Alternance of alternative stable states influence the functional diversity of microcrustaceans in a shallow subtropical lake

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