The influence of the environment in the incorporation of copper and cadmium in scraper insects

Loureiro, Rafael Chaves; Calisto, Jean Felipe Fossá; Magro, Jacir Dal; Restello, Rozane Maria; Hepp, Luiz Ubiratan

doi:10.1007/s10661-021-08997-0

Cited by 7 publications

(3 citation statements)

References 60 publications

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“…Overall, macroinvertebrates are a well-studied group in subtropical steams, with the diversity of the group being (i) negatively affected by anthropogenic land use (Barbola et al, 2011;Galeti et al, 2020;Tonello et al, 2021); (ii) pos-itively affected by oxygen concentration and high granulometry heterogeneity (Baptista et al, 2014); (iii) influenced by inter-annual temporal factors (Hepp et al, 2021); (iv) negatively affected by the input of leaf litter chemical compounds resulting from anthropogenic land uses (Loureiro et al, 2018(Loureiro et al, , 2021; and (v) highly similar between neighboring areas (i.e., local scale; Hepp & Melo, 2013;Hepp et al, 2021). It is noteworthy that most of these studies focused on forest streams and only a few studied the macroinvertebrate fauna of subtropical grasslands (Baptista et al, 2014;Hepp & Melo, 2013;Hepp et al, 2021;Loureiro et al, 2018Loureiro et al, , 2021Tonello et al, 2021), few of which were in highland grasslands (Galeti et al, 2020;, Montilla et al, 2022Principe et al, 2015). Similarly, subtropical highland grasslands have been understudied compared to tropical highland grasslands (Callisto et al, 2016(Callisto et al, , 2021Castro et al, 2019).…”

Section: Introductionmentioning

confidence: 99%

Land-use effects on aquatic macroinvertebrate diversity in subtropical highland grasslands streams

Bacca¹,

Cararo²,

Lima‐Rezende³

et al. 2023

Limnetica

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Knowledge of the frequency and occurrence of macroinvertebrates throughout landscapes may clarify the effects of anthropic impacts on aquatic systems and help guide conservation actions for watersheds. We evaluated macroinvertebrate α and β diversity in streams in four different subtropical phytophysiognomies: highland grasslands with arboreal riparian vegetation, highland grasslands without arboreal riparian vegetation, mixed ombrophilous forest and silviculture. We also evaluated how environmental factors influence α diversity. We sampled macroinvertebrate communities (by Surber sampler), litter input (by nets) and physicochemical variables of the water (by multiparameter and chemical analysis) at 10 sites in riparian zones of a highland system. A total of 2124 individuals were sampled representing 41 taxa, with high α and β diversity in mixed ombrophilous forest. The results indicate that environmental heterogeneity increases food resource availability, as well as macroinvertebrate diversity. Furthermore, the β diversity was found to increase with distance among the unconnected streams. Areas of silviculture had the highest density values among the sampled areas due high organic material stock in the soil. Therefore, higher leaf litter input may decrease the toxicity effect of secondary compounds released by leaf plant decomposition compared to environments with low systemic leaf litter input, such as highland grasslands. The presence of arboreal riparian vegetation drives canopy openness, water temperature, dissolved oxygen, and orthophosphate in streams, which control the frequency and occurrence of benthic macroinvertebrates. Homogeneous systems, as naturally observed in highland grasslands, plus high canopy openness decrease macroinvertebrate richness and density. The naturally low richness of highland grasslands, although with endemic species, may be an important guideline for legislation on anthropic impacts, management, and conservation of streams in this specific subtropical zone.

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Section: Introductionmentioning

confidence: 99%

Land-use effects on aquatic macroinvertebrate diversity in subtropical highland grasslands streams

Bacca¹,

Cararo²,

Lima‐Rezende³

et al. 2023

Limnetica

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“…More specifically, in agricultural landscapes vegetation maintenance helps in the retention of chemical elements used in crops (e.g. pesticides and metals) (Loureiro et al, 2021;Loureiro & Hepp, 2020). The riparian vegetation removal alters the habitats availability within streams, decreasing the diversity and composition of benthic macroinvertebrates communities (Cornejo et al, 2019;Huiñocana et al, 2020;Meza-Salazar et al, 2020).…”

Section: Introductionmentioning

confidence: 99%

Agriculture affects functional diversity of aquatic insects in Subtropical Atlantic Forest streams

Hepp,

Milesi,

Picolotto

et al. 2023

Acta Limnol. Bras.

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Aim We evaluated the effects of native vegetation and agricultural activities on functional characteristics of aquatic insects’ assemblages in Atlantic Forest streams southern Brazil. Methods We collected information on land uses, riparian zone structural characteristics, and limnological variables of ten streams to characterize their environmental quality. In the same streams, we collected aquatic insects (Ephemeroptera, Plecoptera, and Trichoptera) and determined their functional characteristics (e.g. food habits, mobility, shape, and body size). The information for each trait category was quantified using a fuzzy code technique. To test the environmental conditions on aquatic insect functional attributes, we used an RLQ analysis. Results In our study, only five environmental variables showed variation in streams (temperature, pH, DO, native vegetation, and agriculture use). We collected a total of 2591 organisms distributed in 21 EPT genera. We observed that the functional attributes of EPT formed distinct groups in relation to the stream categories defined by the measured environmental variables. We observed that shredders and larger and flattened organisms were associated with natural streams. These attributes were associated with the genera Phylloicus, Anacroneuria, Tupiperla, and Farrodes. On the other hand, we observed greater proportions of scrapers, with spherical bodies and shelter builders in streams impacted by agriculture. The most frequent genera in these streams were Itaura, Wormaldia and Helicopsyche. Conclusions The modification of natural landscapes by agricultural areas caused significant functional changes in the aquatic invertebrate communities. Since aquatic insects participate effectively in ecological processes, alterations in the functional characteristics of these communities can cause changes in the streams’ functioning.

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“…Runoff from urban and farming landscapes can serve as sources of trace element contaminants in freshwater sediments, where they associate strongly with particulate matter and accumulate over time [3,4]. In sediments, these elements can be found associated with a wide spectrum of dynamic chemical species, where local biogeochemical cycles control their solubility and, thus, the subsequent effects on localised biological processes and release into aquatic food chains on a broader [5,6].…”

Section: Introductionmentioning

confidence: 99%

Copper Contamination Affects the Biogeochemical Cycling of Nitrogen in Freshwater Sediment Mesocosms

Tomoiye,

Huang,

Lehto

2023

Sustainability

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Trace elements can have a wide variety of effects on microbial populations and their function in the aquatic environment. However, specific impacts on chemical and biological processes are often difficult to unravel, due to the wide variety of chemical species involved and interactions between different elemental cycles. A replicated mesocosm experiment was used to test the effect of increasing copper concentrations, i.e., from 6 mg kg−1 to 30 and 120 mg kg−1, on nitrogen cycling in a freshwater sediment under laboratory conditions. Nitrous oxide emissions from the treated sediments were measured over three consecutive 24 h periods. This was followed by measurements of iron, manganese, copper and mineral nitrogen species (nitrate and ammonium) mobilisation in the sediments using the diffusive gradients in thin films (DGT) and diffusive equilibria in thin films (DET) techniques and sequential extractions. Increasing copper concentrations are shown to have resulted in significantly reduced nitrate formation near the sediment–water interface and increased nitrous oxide emissions from the sediment overall. The concomitant mobilisation and sequestration of iron with ammonium in the sediment with the highest Cu treatment strongly imply links between the biogeochemical cycles of the two elements. Modest Cu contamination was shown to affect the nitrogen cycle in the tested freshwater sediment, which suggests that even relatively small loads of the metal in fresh watercourses can exert an influence on nutrient loads and greenhouse gas emissions from these environments.

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The influence of the environment in the incorporation of copper and cadmium in scraper insects

Cited by 7 publications

References 60 publications

Land-use effects on aquatic macroinvertebrate diversity in subtropical highland grasslands streams

Land-use effects on aquatic macroinvertebrate diversity in subtropical highland grasslands streams

Agriculture affects functional diversity of aquatic insects in Subtropical Atlantic Forest streams

Copper Contamination Affects the Biogeochemical Cycling of Nitrogen in Freshwater Sediment Mesocosms

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