Colonization of leaf litter of two aquatic macrophytes, Mayaca fluviatilis Aublet and Salvinia auriculata Aublet by aquatic macroinvertebrates in a tropical reservoir

Silva, Fabio Laurindo da; Oliveira, Heliana Rosely Neves; Escarpinati, Suzana Cunha; Fonseca-Gessner, Alaíde Aparecida; Paula, Marcia Cristina de

doi:10.4136/ambi-agua.171

Cited by 6 publications

(6 citation statements)

References 15 publications

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“…The community total density increased since the beginning of the experiment. Some related studies report similar results (Stripari and Henry 2002, Gonçalves et al 2003, Quintão et al 2013; however, others report a decrease in density at the end of the experiment (Gonçalves et al 2004, Silva et al 2011). The increasing invertebrate density observed in this study may be related to the low decomposition rates as the substrate is more stable when the process is slower and consequently, the biological relations become more complex and the probability of colonization of the detritus by a larger number of individuals is greater (Gonçalves et al 2004).…”

Section: Discussionmentioning

confidence: 58%

“…The increasing invertebrate density observed in this study may be related to the low decomposition rates as the substrate is more stable when the process is slower and consequently, the biological relations become more complex and the probability of colonization of the detritus by a larger number of individuals is greater (Gonçalves et al 2004). In contrast, a decrease in the density at the end of the decomposition process may be related to a lower quality of the substrate as a food resource (Silva et al 2011) and an increase in predation or competition for the habitat and food resources.…”

Section: Discussionmentioning

confidence: 59%

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Leaf decomposition of the macrophyte Eichhornia azurea and associated microorganisms and invertebrates

et al. 2018

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The knowledge of the decomposition of macrophytes and associated organisms is important to understand ecological processes that control aquatic ecosystem metabolism. The aims of the study were: 1) to investigate the structure and composition of the aquatic invertebrate community associated with the decomposition of leaves of the macrophyte Eichhornia azurea over time; 2) to determine the biomass of microorganisms (fungi and bacteria) and their relationship with the associated invertebrate communities; and 3) to assess the relationship between biotic and abiotic variables and invertebrate density. To analyze the decomposition process, leaves of E. azurea were put into litter bags and incubated in Barbosa Lake, São Paulo State, Brazil. Litter bags were retrieved at seven sampling occasions during a 2.5 month period. We measured decomposition rates of leaves, and the associated communities of invertebrates, the biomass of bacteria and fungi, and biotic and abiotic variables that might be associated with the decomposition process. Significant differences were found in the densities of invertebrates. The microorganism biomass also varied significantly throughout the experiment. Fungal biomass (ergosterol concentration) was positively associated with the density of most taxonomic groups of aquatic invertebrates, as well as the total density of invertebrates and their taxonomic richness. Total invertebrate density increased during the experiment, but the taxonomic richness of invertebrates did not follow this pattern. Insecta and Crustacea densities were the main contributors to similarity within the groups formed at each sampling time. The different ways that invertebrates use detritus, such as a food source or a feeding site, as well as their feeding plasticity, may have contributed to the increase in the total invertebrate density over time as decomposition progressed. After two months and a half of macrophyte incubation the loss of E. azurea leaf biomass was less than 4.4% of the initial value. Factors such as decreasing temperature throughout the experiment, possible inhibition of microorganism growth by leachates, the predominantly oligotrophic environment and low abrasion due to the environment lentic regime may have contributed to the low rate of decomposition of E. azurea. Our results suggest that decomposition process in the present study has not begun in fact and/or macrophyte decomposition in nature is much slower than previously thought.

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Section: Discussionmentioning

confidence: 58%

Section: Discussionmentioning

confidence: 59%

Leaf decomposition of the macrophyte Eichhornia azurea and associated microorganisms and invertebrates

et al. 2018

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“…Despite its abundance in lentic water bodies throughout Brazil, data on M. fluviatilis decomposition are outdated, been cited 80% of remained mass after 40 days decomposition, in a tropical reservoir in summer (Silva, Oliveira, Escarpinati, Fonseca-Gessner, & Paula, 2011)Several factors influence the rate of decomposition in aquatic systems; temperature (Song, Yan, Cai, & Jiang, 2013), nutrient concentrations (Webster & Benfield, 1986), and the composition of decomposing microbial communities (Shilla, Asaeda, Fugino, & Sanderson, 2006).…”

Section: Resultsmentioning

confidence: 99%

Invertebrates and microbiota associated with aquatic macrophyte degradation in a shallow lake in southern Brazil

et al. 2020

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Aquatic macrophytes are the main producers of organic matter in shallow aquatic ecosystems. They are also food sources for many herbivores. When macrophytes die, they enter the debris chain, are conditioned by microbial action and colonized by benthic invertebrates which remobilize nutrients from their biomass. In subtropical aquatic systems, the participation of shredder invertebrates has been questioned, highlighting the participation of fungi and bacteria in the degradation of organic matter. This study evaluated the degradation of two submerged aquatic macrophytes, Mayaca fluviatilis and Stuckenia pectinata, determining the quality of debris and microbiota and invertebrate trophic group density throughout the degradation process. Our results indicated that plants with lower polyphenol concentrations had higher degradation speeds. The shredders invertebrates had reduced abundance in both macrophytes, emphasizing the importance of bacteria and fungi in the nutrient cycling process in subtropical shallow lakes.

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“…As demonstrated through this index, the distribution of Labrundinia unicolor was restricted to white ginger lily banks (IM), and Labrundinia paulae was strongly associated with partially invaded forest (IF). This genus has been described as an aquatic insect commonly associated with dominant macrophyte species, especially Salvinia (Da Silva et al, 2011). It is believed that this macrophyte with thin and ramified roots, provides shelter against predators, and the algae attached to it serves as a main food resource for macrofauna (Trivinho-Strixino et al, 2000).…”

Section: Discussionmentioning

confidence: 99%

Forecasting the impact of an invasive macrophyte species in the littoral zone through aquatic insect species composition

Saulino

Trivinho‐Strixino

2017

Iheringia, Sér. Zool.

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ABSTRACT. Invasive macrophytes threaten freshwater ecosystem biodiversity. We analyzed the impact of the invasive white ginger lily (Hedychium coronarium J. König, Zingiberaceae) on aquatic insect assemblages living in the littoral zone of a tropical reservoir. We took aquatic insect samples in the littoral zone on four main vegetal profi le banks: white ginger monotypic bank, forest partially invaded, native macrophyte monotypic bank and riparian forest. At each vegetal bank, we measured abiotic variables such as dissolved oxygen, pH, water temperature and depth. We analyzed the aquatic insects through abundance, richness and Simpson diversity. We used the non-Metric Multidimensional Scaling (nMDS) analysis to analyze the spatial distribution of each assemblage, and Analysis of similarities (ANOSIM) to verify diff erences amongst dissimilarity distances. Additionally, we analyzed the main taxa associated with invasive macrophytes through indicator species analyses using IndVal index. We observed that the invasive macrophyte banks presented higher abundance of associated specimens, as well as lower dissimilarity of aquatic insect assemblages. Additionally, invasive macrophytes shifted the water pH and littoral depth of reservoir banks. The IndVal index indicated eight aquatic insects as indicator species. Labrundinia unicolor Silva, 2013, Ablabesmyia depaulai Neubern, 2013 and Diastatops Rambur, 1842 were indicator species on banks. We concluded that invasion of white ginger lily caused loss of shallow littoral habitat and altered the pH of the surrounding water probably by high decomposition rate and high production of plant biomass. We suggest the use of species of aquatic insects as indicator species to monitor white ginger lily impact in freshwater systems.

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Colonization of leaf litter of two aquatic macrophytes, Mayaca fluviatilis Aublet and Salvinia auriculata Aublet by aquatic macroinvertebrates in a tropical reservoir

Cited by 6 publications

References 15 publications

Leaf decomposition of the macrophyte Eichhornia azurea and associated microorganisms and invertebrates

Leaf decomposition of the macrophyte Eichhornia azurea and associated microorganisms and invertebrates

Invertebrates and microbiota associated with aquatic macrophyte degradation in a shallow lake in southern Brazil

Forecasting the impact of an invasive macrophyte species in the littoral zone through aquatic insect species composition

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