scholarly journals The functional feeding groups’ structure of aquatic insects in upstreams of Da Nhim river, Lam Dong province

2015 ◽  
Vol 18 (2) ◽  
pp. 25-35
Author(s):  
Thong Ngoc Minh Bui ◽  
Khiem Trong Hoang ◽  
Huy Duc Hoang
Keyword(s):  
Functional Groups ◽  
Aquatic Insects ◽  
Riparian Vegetation ◽  
Nutrient Balance ◽  
Diversity Indices ◽  
Functional Feeding Groups ◽  
Stream Ecosystem ◽  
Functional Feeding Group ◽  
Feeding Groups ◽  
Dry And Rainy Seasons

Study on the functional feeding group (FFG) structure of aquatic insects in upstreams of Da Nhim river to understand the ecological functional groups in the watershed. The study investigated two headwater streams (A and B) of upper Da Nhim river in the dry and rainy seasons 2013). Quantitative sampling, diversity indices, grouping the FFGs and analysing correlation between the FFGs conducted in each season. Results showed that: (1) Shannon - Weiner indices (H') were 3.0-4.4, and Simpson indices (λ) were 0.06-0.13; (2) The FFG structure included five groups: collector - garthering (cg) (46 %), scrapper (sc) (31 %), collector - filtering (cf) (12 %), predator (p) (8 %) and shredder (sh) (3 %); (3) The correlations were possitive and stability in seasons. Shredder (sh) implied the intact riparian vegetation; and the occurrence of predators in both two seasons, implied the nutrient balance in the stream ecosystem. The FFG structures should be documented in the continuing lower reaches of the Da Nhim river to fulfill data in the whole system of Dong Nai river

Preliminary Results on Aquatic Insects in the Me Linh Station for Biodiversity, Vinh Phuc Province

2017 ◽  
Vol 33 (4) ◽  
Author(s):  
Nguyen Van Hieu ◽  
Nguyen Van Vinh
Keyword(s):  
Quantitative Analysis ◽  
Aquatic Insects ◽  
Field Survey ◽  
Aquatic Insect ◽  
Insect Species ◽  
Functional Feeding Groups ◽  
Species Number ◽  
Feeding Groups ◽  
Preliminary Results

An intensive field survey on aquatic insects of Me Linh Station for Biodiversity in Vinhphuc province was conducted in December 2015. Specimens were collected at 8 different sites and aquatic insects were collected both quantitatively by Surber net and qualitatively by hand net, pond net. As a result, a total of 110 aquatic insect species belonging to 98 genera, 49 families and 9 orders were recognized. Among these, the order Ephemeroptera had the highest species number with 26 species, followed by Odonata with 25 species, Trichoptera with 18 species, Coleoptera with 15 species, Hemiptera with 11 species, Diptera with 9 species. Lepidoptera, Plecoptera and Megaloptera had the lowest of species number, represented by 3 species of Lepidoptera, 2 species of Plecoptera and 1 species of Megaloptera. Besides, the quantitative analysis results and the functional feeding groups were provided.

scholarly journals Effects of environmental factors on community structure of Leptophlebiidae (Insecta, Ephemeroptera) in Cerrado streams, Brazil

2013 ◽  
Vol 103 (3) ◽  
pp. 260-265 ◽  
Author(s):  
Leandro S. Brasil ◽  
Yulie Shimano ◽  
Joana Darc Batista ◽  
Helena S. R. Cabette
Keyword(s):  
Species Richness ◽  
Environmental Factors ◽  
Aquatic Insects ◽  
Riparian Vegetation ◽  
Functional Group ◽  
Functional Feeding Groups ◽  
Brazilian Cerrado ◽  
Positive Effects ◽  
Sampling Points ◽  
History Of

We analyzed the effects of environmental factors on abundance, species richness, and functional group richness of Leptophlebiidae in 16 sampling points along four Cerrado streams. Across three periods of 2005, we collected 5,492 larvae from 14 species in stream bed substrate. These species belong to three functional feeding groups: scrapers, filtering collectors and shredders. The abundance and species richness were not affected by water quality, but habitat quality related to presence of riparian vegetation had positive effects on the abundance of shredders. Our results add important information on the natural history of the species and functional groups of aquatic insects and also provide relevant data for the monitoring and conservation of streams in the Brazilian Cerrado.

scholarly journals Fauna of Macroinvertebrates and Composition of Functional Feeding Groups about the Aquatic Insects to Microhabitats from the Geum River, Korea

2006 ◽  
Vol 29 (5) ◽  
pp. 415-424 ◽  
Author(s):  
Young-Jun Park ◽  
Young-Ho Cho ◽  
Yong-Gu Han ◽  
Hong-Sik Oh ◽  
Oh-Seok Kwon ◽  
...  
Keyword(s):  
Aquatic Insects ◽  
Functional Feeding Groups ◽  
Feeding Groups

scholarly journals Functional Feeding Groups of Aquatic Insects Influence Trace Element Accumulation: Findings for Filterers, Scrapers and Predators from the Po Basin

Biology ◽  
2020 ◽  
Vol 9 (9) ◽  
pp. 288
Author(s):  
Paolo Pastorino ◽  
Annalisa Zaccaroni ◽  
Alberto Doretto ◽  
Elisa Falasco ◽  
Marina Silvi ◽  
...  
Keyword(s):  
Trace Elements ◽  
Trace Element ◽  
Aquatic Insects ◽  
Limit Of Detection ◽  
Principal Component ◽  
Aquatic Organisms ◽  
Functional Feeding Groups ◽  
Feeding Groups ◽  
Element Accumulation ◽  
Trace Element Accumulation

For this study, we measured the concentrations of 23 trace elements (Al, As, Ba, Bi, Cd, Cr, Co, Cu, Fe, Ga, Hg, In, Li, Mn, Mo, Ni, Pb, Se, Sr, Ti, Tl, V, and Zn) in the whole bodies of three functional feeding groups (FFG) (filterers—Hydropsychidae, scrapers—Heptageniidae, and predators—Odonata) of aquatic insects collected from two sites in the Po basin (Po Settimo and Malone Front, Northwest Italy) to determine: (a) how FFG influence trace element accumulations, (b) if scrapers accumulate higher elements compared to the other FFG, since they graze on periphyton, which represents one of the major sinks of metals, and (c) the potential use of macroinvertebrates to assess the bioavailability of trace elements in freshwater. The hierarchical clustering analysis generated three main groups based on trace element concentrations: the most abundant elements were Fe and Al, followed by Sr, In, Zn, V, Mo, and Cu. Tl was below the limit of detection (LOD) in all FFG. Ga was detected only in scrapers from both sites and Hg only in predators from Po Settimo. The principal component analysis showed that concentrations of Al, As, Bi, Cd, Co, Cr, Ga, Fe, In, Mn, Pb, Ni, and Sr were highest in scrapers, suggesting that trace elements accumulate from the ingestion of epilithic periphyton (biofilm). Odonata (predators) accumulate certain elements (Ba, Hg, Li, Se, V, Ti, and Zn) in higher concentrations by food ingestion composed of different aquatic organisms. Differently, Cu and Mo concentrations were the highest in filterers due to their bioavailability in the water column. Non-metric multidimensional scaling clearly differentiated the FFG based on their ability to accumulate trace elements. The findings from this study represent an important step toward the definition of an innovative approach based on trace element accumulation by macroinvertebrates.

scholarly journals Microhabitat selection and distribution of functional feeding groups of mayfly larvae (Ephemeroptera) in lotic karst habitats

2018 ◽  
pp. 17 ◽  
Author(s):  
Marina Vilenica ◽  
Andreja Brigić ◽  
Michel Sartori ◽  
Zlatko Mihaljević
Keyword(s):  
Water Current ◽  
Functional Feeding Groups ◽  
Feeding Strategies ◽  
Microhabitat Selection ◽  
Dinaric Karst ◽  
Feeding Groups ◽  
Microhabitat Preferences ◽  
One Year ◽  
Physical And Chemical ◽  
Chemical Water

Research examining mayfly ecology in karst streams and rivers has increased in recent years, though microhabitat preferences remain poorly characterized. We examined mayfly assemblage taxonomy, functional feeding groups and microhabitat preferences in two contrasting lotic Dinaric karst catchments, one pristine and one anthropogenically impacted. At monthly intervals over a one-year period, all major microhabitats (i.e. dominated by boulders, cobbles, sand, silt, mosses, or angiosperms) were sampled at sites spanning springs, upper, middle and lower river reaches, and tufa barriers. In both catchments, mayfly species richness was comparable among microhabitats, while mayfly abundance was highest on mosses and lowest on silt. NMDS ordination did not group assemblages according to microhabitat type, which may reflect the greater influence of physical and chemical water properties. In both catchments and all microhabitats, mayfly assemblages were dominated by grazers/scrapers at upstream sites and by detritivores at downstream sites. Active filter feeders were more abundant in microhabitats with silt substrates and lower current velocities. This study demonstrated that certain mayfly species strongly preferred a specific microhabitat type, reflecting their water current preferences and feeding strategies, while other species shifted between microhabitats, likely in search of food resources and shelter. The results emphasize the importance of habitat heterogeneity in supporting diverse communities in karst rivers.

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