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67 results for “macroinvertebrate communities”
Freshwater macroinvertebrate community composition and diversity data from lagoons on Navarino Island, Chile
This study was carried out during the austral summer of 2015 (15 January to 15 February) and assessed freshwater macroinvertebrate diversity associated with lakes and ponds along the altitudinal gradient of the Róbalo river watershed, located in the Magellanic sub-Antarctic ecoregion. The latter has a steep elevational gradient, peaking at around 1000 m a.s.l., and marked changes in temperature and landscape composition can be observed over relatively short distances. Four lagoons were chosen, as they were located on different altitudinal levels, thus allowing for comparison between the different zones found within the gradient. Along with the physical description of each lagoon (temperature, pH and conductivity), the surrounding habitats were characterized. Within each lagoon, four different habitat types were identified based on substrate composition, and the presence/absence and type of vegetation (vascular or non-vascular).
Data from: Experimental N and P additions alter stream macroinvertebrate community composition via taxon‐level responses to shifts in detrital resource stoichiometry
1. Increases in nitrogen (N) and phosphorus (P) availability are changing animal communities, partly by altering stoichiometric imbalances between consumers and their food. Testing relationships between resource stoichiometry and consumer assemblage structure requires ecosystem-level manipulations that have been lacking to date. 2. We analyzed patterns of macroinvertebrate community composition in five detritus-based headwater streams subject to experimental whole-stream N and P additions that spanned a steep gradient in dissolved N:P ratio (2:1, 8:1, 16:1, 32:1, 128:1) over two years, following a one-year pre-treatment period. 3. We predicted that shifts in leaf litter stoichiometry would drive overall patterns of community composition via greater responses of shredders to enrichment than other taxa, as shredders dominate primary consumer biomass and experience larger consumer-resource elemental imbalances than other functional groups in stream ecosystems. Specifically, we expected litter C:P to be a significant predictor of shredder biomass given the greater relative imbalances between shredder and litter C:P than C:N. Finally, we tested whether shredder responses to enrichment were related to other taxon-level traits, including body size and stoichiometry, larval lifespan and growth rate. 4. Whole-community composition shifted similarly across the five streams after enrichment, largely driven by increased shredder and predator biomass. These shifts were limited to the autumn/winter seasons and related to decreased leaf litter C:P, highlighting important links between the quality of seasonal litter subsidies and community phenology. 5. Among 10 taxa that drove structural shifts, two declined while other taxa from the same functional/taxonomic groups responded positively, suggesting that specific life-history traits may determine sensitivity to enrichment. 6. Increases in total shredder biomass, and in biomass of several common shredders, were associated with lower litter C:P. Body C:P did not predict shredder response to enrichment. However, weak negative relationships between shredder response and body size, and larval lifespan, suggest that small-bodied and short-lived taxa may be more responsive to shifting resource stoichiometry. 7. Moderate anthropogenic increases in N and P availability affect resource stoichiometry and can alter animal communities, influencing additional food-web and ecosystem properties. We provide support for ecological stoichiometry as a framework for predicting such outcomes based on changes in the elemental composition of resource pools.
Data from: Nonadditive effects of consumption in an intertidal macroinvertebrate community are independent of food availability but driven by complementarity effects
Suboptimal environmental conditions are ubiquitous in nature and commonly drive the outcome of biological interactions in community processes. Despite the importance of biological interactions for community processes, knowledge on how species interactions are affected by a limiting resource, e.g. low food availability, remains limited. Here, we tested whether variation in food supply causes non-additive consumption patterns, using the macroinvertebrate community of intertidal sandy beaches as a model system. We quantified isotopically labelled diatom consumption by three macroinvertebrate species (Bathyporeia pilosa, Haustorius arenarius and Scolelepis squamata) kept in mesocosms in either monoculture or a 3-species community at a range of diatom densities. Our results show that B. pilosa was the most successful competitor in terms of consumption at both high and low diatom density, while H. arenarius and especially S. squamata consumed less in a community than in their respective monocultures. Non-additive effects on consumption in this macroinvertebrate community were present and larger than mere additive effects, and similar across diatom densities. The underlying species interactions, however, did change with diatom density. Complementarity effects related to niche-partitioning were the main driver of the net diversity effect on consumption, with a slightly increasing contribution of selection effects related to competition) with decreasing diatom density. For the first time we showed that non-additive effects of consumption are independent of food availability in a macroinvertebrate community. This suggests that in communities with functionally different, and thus complementary, species, non-additive effects can arise even when food availability is low. Hence, at a range of environmental conditions, species interactions hold important potential to alter ecosystem functioning.
Data from: Is there an interaction of the effects of salinity and pesticides on the community structure of macroinvertebrates?
Salinization of freshwater ecosystems is a global problem affecting many regions worldwide and can co-occur with pesticides in agricultural regions. Given that both stressors are potent to affect macroinvertebrate communities, their effects could interact. We investigated the effects of salinity and pesticides at 24 sites in an agricultural region of southern Victoria, South-East Australia. We used distance-based redundancy analysis to determine the influence of pesticides, salinity and other environmental variables on the composition of macroinvertebrate communities. Salinity and pesticide toxicity had a statistically significant effect on communities as had the substrate composition and the percentage of pool and riffle sections in the sampled stream reaches. We did not find evidence for interactive effects between salinity and pesticides, i.e. the effect of one of these variables did not depend on the level of the other. Nevertheless, our results show that salinization and exposure to pesticides can be major factors for the structure of macroinvertebrate communities in agricultural regions. Pesticide toxicity acted on a lower taxonomic level compared to salinity, potentially indicating evolutionary adaptation to salinity stress.
A worldwide assessment of soil macroinvertebrate communities
<p>Soil macroinvertebrate communities have been assessed worldwide using the standard ISO/TSBF sampling procedure. The Macrofauna database currently comprises 3694 sites distributed throughout 41 countries, from 55º S latitude to 57ºN, sea level to over 4000m in elevation, in total annual total rainfall regimes between 500 and >3000mm and 5 to 32ºC mean temperature. These communities are significantly influenced by climatic parameters, soil texture and vegetation cover. Abundance and diversity were highest in tropical rain forests (1895 ± 305 individuals m<sup>-2</sup>) and natural savannahs (1796 ± 269), and progressively lower in tropical cropping systems (tree associated crops 1358 ± 101, pastures or transitory crops: 1178 ± 147), temperate grasslands: 583 ± 70, temperate forests: 529 ± 71, annual crops: 232 ± 14 and dry forest: 221 ± 52 systems.</p>
Data from: Is there an interaction of the effects of salinity and pesticides on the community structure of macroinvertebrates?
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Data from: Responses of macroinvertebrate communities to small dam removals: implications for bioassessment and restoration
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Data from: Experimental N and P additions alter stream macroinvertebrate community composition via taxon‐level responses to shifts in detrital resource stoichiometry
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Data from: Does trait-based joint species distribution modelling reveal the signature of competition in stream macroinvertebrate communities?
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A worldwide assessment of soil macroinvertebrate communities
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Data from: Nonadditive effects of consumption in an intertidal macroinvertebrate community are independent of food availability but driven by complementarity effects
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Data supplementing the article "Aquatic biofilms as passive environmental DNA samplers: application to benthic macroinvertebrate communities in rivers" - raw MiSeq data inventories
<p>These data supplement the article “Aquatic biofilms as passive environmental DNA samplers: application to benthic macroinvertebrate communities in rivers” Sinziana F. Rivera, Valentin Vasselon, Nathalie Mary, Olivier Monnier, Fréderic Rimet & Agnès Bouchez submitted to “Molecular Ecology Resources” journal.</p> <p>The directory is composed of: “38_samples_fastq:files”: contains raw demultiplexed fastq files (R1. fastq and R2. fastq) for each of the 38 samples used in this study to produce OTUs and taxonomic inventories.</p> <p>“Samples id.xlsx”: contains the samples ID of the fastq files</p> <p>“Inventories.xlsx”: contains single and multi-habitat morphological inventories as well as molecular inventories resulting from the study</p>
Supplementary material 2 from: Laini A, Beermann AJ, Bolpagni R, Burgazzi G, Elbrecht V, Zizka VMA, Leese F, Viaroli P (2020) Exploring the potential of metabarcoding to disentangle macroinvertebrate community dynamics in intermittent streams. Metabarcoding and Metagenomics 4: e51433. https://doi.org/10.3897/mbmg.4.51433
Table S1, Figures S1–S5
Supplementary material 1 from: Laini A, Beermann AJ, Bolpagni R, Burgazzi G, Elbrecht V, Zizka VMA, Leese F, Viaroli P (2020) Exploring the potential of metabarcoding to disentangle macroinvertebrate community dynamics in intermittent streams. Metabarcoding and Metagenomics 4: e51433. https://doi.org/10.3897/mbmg.4.51433
Raw data
Figure 7 in Macroinvertebrate communities along the Velika Morava River
Figure 7. DCA biplot based on the matrix of 82 taxa and 20 samples displaying 36% of total variance (first DCA axis, 22.3%; second DCA axis, 13.6%). Down-weighting of rare species and the WA method were performed. Ellipse shows the autumn/VM3/VM5 group of samples/taxa. The names of the taxa and species are abbreviated as follows: Bae rho – Baetis rhodani, Pot lut – Potamanthus luteus, Hep fu – Kageronia fuscogrisea, Hep sp. – Heptagenia sp., Eph ig – Ephemerella ignita, Hyd sp – Hydropsyche sp.. etc. (full list of abbreviations is provided in the Appendix). The samples are coded as follows: 1- VM1_7, 2-VM2_7, 3-VM3_7, 4-VM4_7, 5-VM5_7, 6-VM1_8, 7-VM2_8, etc.
Figure 5 in Temporal variability of the macroinvertebrate community associated with Eichhornia azurea (Swarts) Kunth (Pontederiaceae) in a lake marginal to a tropical river
Figure 5. Relative contribution (%) of taxa to the total density (expressed in ind.gDW–1) of the macroinvertebrate community associated with E. azurea in Barbosa Lake during the study period. The group "Others" corresponds to Gomphidae, Leptophlebiidae, Dytiscidae, Noteridae, Belostomatidae, Mesoveliidae, and Veliidae.
Figure 3 in Temporal variability of the macroinvertebrate community associated with Eichhornia azurea (Swarts) Kunth (Pontederiaceae) in a lake marginal to a tropical river
Figure 3. Means and standard deviations of monthly cumulated precipitation values (mm) recorded from 1996 to 2012 (A); monthly accumulated precipitation (mm) (B) and daily water level values (m) (C) recorded in the study site between February 2013 and January 2014.
Macroinvertebrate communities in streams with contrasting water sources in the Japanese Alps
<p>Data on macroinvertebrate community structure and environmental conditions across groundwater and snowmelt fed stream systems in the northern Japanese Alps. </p>
Supplementary material 3 from: Turunen J, Mykrä H, Elbrecht V, Steinke D, Braukmann T, Aroviita J (2021) The power of metabarcoding: Can we improve bioassessment and biodiversity surveys of stream macroinvertebrate communities? Metabarcoding and Metagenomics 5: e68938. https://doi.org/10.3897/mbmg.5.68938
Table S3
Supplementary material 5 from: Turunen J, Mykrä H, Elbrecht V, Steinke D, Braukmann T, Aroviita J (2021) The power of metabarcoding: Can we improve bioassessment and biodiversity surveys of stream macroinvertebrate communities? Metabarcoding and Metagenomics 5: e68938. https://doi.org/10.3897/mbmg.5.68938
Table S5
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Allen Brain Atlas
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Annotated Behaviour and Observability Dataset (ABODe)
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