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49 results for “soil invertebrates”
Soil Invertebrate Species in Macrosystems Biodiversity Project at Harvard Forest 2012
Leaf litter invertebrates and soil microbes were sampled in an array of 21 1m2 subplots by the Kaspari Ant Lab at the University of Oklahoma as part of a macrosystems biodiversity and latitude project supported by the National Science Foundation under Cooperative Agreement DEB#1065836.
Soil invertebrate surveys from the Shackleton Glacier region of Antarctica during the 2017-2018 austral summer
During the 2017-2018 austral summer, a survey of soil invertebrate diversity and abundance was conducted throughout the Shackleton Glacier region of Antarctica to investigate whether habitat suitability, taxonomic diversity, and community composition follow predictable temporal patterns after the Last Glacial Maximum (LGM). Soil samples were collected along elevation transects from twelve ice-free areas to capture maximum variation in soil properties, geochemistry, and surface exposure age. This data package includes invertebrate abundances (nematodes, tardigrades, rotifers) for each sample categorized by species, sex, and maturity (juvenile, adult).
Integrated measurements of soil micro-invertebrate abundance and associated physicochemical properties from the McMurdo Dry Valleys, Antarctica (1993–2022)
This data package compiles three decades (1993–2022) of soil micro-invertebrate abundance data and associated physicochemical measurements collected as part of the McMurdo Dry Valleys Long Term Ecological Research (MCM LTER) project in Antarctica. Variables include soil micro-invertebrate counts and species richness, along with associated soil physicochemical properties, including gravimetric moisture content, pH, electrical conductivity, soil organic carbon, ammonium, and nitrate. Data originate from both long-term core monitoring efforts and targeted opportunistic sampling campaigns across multiple valleys, including Arena, Beacon, Pearse, Taylor, Victoria, and Wright Valleys. Sampling locations span a range of geomorphic and ecological settings, providing broad spatial and temporal coverage of soil conditions across the Dry Valleys ecosystem. Data were curated to represent the most comprehensive and spatially diverse records available while minimizing sampling bias across years and study types. These integrated measurements provide a valuable resource for understanding the drivers of soil micro-invertebrate abundance and habitat suitability and serve as a foundation for future analyses of long-term ecological change and species distribution modeling in polar desert soils.
Figure 5 in Shells of the Roman snail are important microhabitats for soil invertebrates
Figure 5. Indirect signs of shell utilization with faeces of (A) Isopoda and (B) Dermaptera deposited on top of Gastropoda faeces.
Figure 3 in Comparison of soil invertebrate communities in organic and conventional production systems in Southern Brazil
Figure 3. Non-metric multidimensional scaling (NMDS) plot showing the relationship between macrofauna taxa (black text) and soil chemical and physical properties (red text) of samples taken in four land-use system in Quitandinha, Brazil. NF = Native forest, OH = Organic horticulture, RT = Reduced tillage, CH = Conventional horticulture.
Fig. 3 in Recovery Of Litter And Soil Invertebrate Communities Following Swidden Cultivation In Sarawak, Malaysia
Fig. 3. Nonmetric multidimensional scaling (NMDS) analysis of litter (A) and soil (B) invertebrates and relationship (P<0.05) with microhabitat environmental factors in young (Y) and old (O) fallows and primary forest (P). BA: tree basal area; CanopyOpen: canopy openness; MiniDis: the shortest straight distance from each plot to the primary forest of LHNP; TreeSp: observed number of tree species.
Fig. 4 in Recovery Of Litter And Soil Invertebrate Communities Following Swidden Cultivation In Sarawak, Malaysia
Fig. 4. Nonmetric multidimensional scaling (NMDS) analysis of litter (A) and soil (B) termites and relationship (P<0.05) with microhabitat environmental factors in young (Y) and old (O) fallows and primary forest (P). BA: tree basal area; TreeSp: observed number of tree species.
Fig. 1 in Recovery Of Litter And Soil Invertebrate Communities Following Swidden Cultivation In Sarawak, Malaysia
Fig. 1. Individual density distributions of different functional groups in litter (A) and soil (B) within the three forest types. a Significant difference was detected among forest types in litter (P<0.01) and soil (P<0.05).
Fig. 2 in Recovery Of Litter And Soil Invertebrate Communities Following Swidden Cultivation In Sarawak, Malaysia
Fig. 2. Termite frequency distribution of different feeding guilds in litter (A) and soil (B) within the three forest types. a Significant difference was detected among forest types in soil (P<0.05).
Data from: Decoupled responses of soil bacteria and their invertebrate consumer to warming, but not freeze-thaw cycles, in the Antarctic Dry Valleys
Altered temperature profiles resulting in increased warming and freeze–thaw cycle (FTC) frequency pose great ecological challenges to organisms in alpine and polar ecosystems. We performed a laboratory microcosm experiment to investigate how temperature variability affects soil bacterial cell numbers, and abundance and traits of soil microfauna (the microbivorous nematode Scottnema lindsayae) from McMurdo Dry Valleys, Antarctica. FTCs and constant freezing shifted nematode body size distribution towards large individuals, driven by higher mortality among smaller individuals. FTCs reduced both bacterial and nematode abundance, but bacterial cell numbers also declined under warming, demonstrating decoupled consumer–prey responses. We predict that higher occurrence of FTCs in cold ecosystems will select for large body size within soil microinvertebrates and overall reduce their abundance. In contrast, warm temperatures without FTCs could lead to divergent responses in soil bacteria and their microinvertebrate consumers, potentially affecting energy and nutrient transfer rates in soil food webs of cold ecosystems.
Ground-dwelling invertebrates and plants following the application of inverted soil mounding on seismic lines
<p><span>In northern Alberta, Canada, much of treed boreal peatlands are fragmented by seismic lines – linear disturbances where trees and shrubs are cleared for the exploration of fossil fuel reserves. Seismic lines have been shown to have slow tree regeneration, likely due to the loss of microtopography during the creation of seismic lines. Inverted soil mounding is one of the treatments commonly applied in Alberta to restore seismic lines and to mitigate the use of these corridors by wildlife and humans. In 2018, we assessed the effects of mounding on understory plants and arthropod assemblages, three years after treatment application. We sampled in five mounded and five untreated seismic lines, and in their adjacent treed fens (reference fens) within the <span>Canadian Natural Resources Ltd (CNRL) Kirby South in-situ steam-assisted gravity drainage (SAGD) Plant, in the Athabasca oil sands (55°22'37.2" N, 111°10'3" W) of NW Alberta</span>. Here we provide the species composition at these sites.</span></p>
Data for: Rewilding soil and litter invertebrates and fungi increases decomposition rates and alters detritivore communities
<p>Habitat degradation and associated reductions in ecosystem functions can be reversed by reintroducing or 'rewilding' keystone species. Rewilding projects have historically targeted restoration of processes such as grazing regimes or top-down predation effects. Few projects focus on restoring decomposition efficiency, despite the pivotal role decomposition plays in global carbon sequestration and nutrient cycling. Here, we tested whether rewilding entire communities of detritivorous invertebrates and fungi can improve litter decomposition efficiency and restore detritivore communities during ecological restoration. Rewilding was conducted by transplanting leaf litter and soil, including associated invertebrate and fungal communities from species-rich remnant sites into species-poor, and geographically isolated, revegetated farmland sites in a temperate woodland region of southeastern Australia. We compared communities in sites under the following treatments: remnant (conservation area and source of litter transplant), rewilded revegetation (revegetated farmland site with litter transplant), and control revegetation (revegetated site, no transplant). In one 'before' and three 'after' sampling periods, we measured litter decomposition and the abundance and diversity of detritivorous invertebrates and fungi. We quantified the effect of detritivores on the rate of litter decomposition using piecewise Structural Equation Modelling. Decomposition was significantly faster in rewilding sites than in both control and remnant areas, and was largely driven by a greater abundance of invertebrate detritivores. Similarly, the abundance of invertebrate detritivores in rewilding revegetation sites exceeded the level of remnant communities, whereas there was little difference between control and remnant sites. In contrast, rewilding did not increase saprotrophic fungi relative abundance/diversity and there was no strong relationship between decomposition and fungal diversity. Our findings suggest the relatively simple act of transplanting leaf litter and soil can increase functional efficiency during restoration and alter community composition. Our methods may prove important across a range of contexts where other restoration methods have failed to restore ecosystem processes to pre-degradation levels.</p>
Soil property, microbial abundance, and plant and invertebrate biomass data across a natural soil temperature gradient in Iceland from August 2018
<p><span>This is a dataset of soil physiochemical properties, bacterial and fungal abundance, and above and belowground plant and invertebrate biomass, sampled at 40 plots in the Hengill geothermal valley, Iceland, from 15<sup>th</sup> to 22<sup>nd</sup> August 2018. The plots span a temperature gradient of 10</span><span>-35 °C over the sampling period, and this temperature gradient is consistent over time. The dataset also includes data on the decomposition rate of soil organic matter, which was sampled at 60 plots in the Hengill valley from May to July 2015.</span></p>
Soil ecotoxicology needs robust biomarkers – a meta-analysis approach to test the robustness of gene expression-based biomarkers for measuring chemical exposure effects in soil invertebrates
<p>Gene expression-based biomarkers are regularly proposed as rapid, sensitive and mechanistically informative tools to identify whether soil invertebrates are experiencing adverse effects due to chemical exposure. However, before biomarkers could be deployed within diagnostic studies, systematic evidence of the robustness of such biomarkers to detect effects is needed. Here, we present an approach for conducting a systematic meta-analysis of the robustness of gene expression-based biomarkers in soil invertebrates.</p> <p>The approach was developed and trialled for two measurements of gene expression commonly proposed as biomarkers in soil ecotoxicology: metallothionein (MT) gene expression in earthworms for metals and heat shock protein 70 (HSP70) gene expression in earthworms for organic chemicals. From a systematic analysis of the published literature, we collected 294 unique gene expression data points and used linear mixed-effect models to assess concentration, exposure duration and species effects on the quantified response.</p> <p>This database provided contains gene-expression data from publications that have used gene expression-based biomakers to study effects of chemical pollutants on soil invertebrates. R scripts are provided that were used to study the patterns of gene expression as reported in accompanying publication. </p> <p>We encourage colleagues in the field to apply this approach to other biomarkers, as such quantitative assessment is a prerequisite to ensuring that the suitability and limitations of proposed biomarkers are known and stated.</p>
Ground-dwelling invertebrates and plants following the application of inverted soil mounding on seismic lines
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Data for: Rewilding soil and litter invertebrates and fungi increases decomposition rates and alters detritivore communities
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Soil property, microbial abundance, and plant and invertebrate biomass data across a natural soil temperature gradient in Iceland from August 2018
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Data from: Decoupled responses of soil bacteria and their invertebrate consumer to warming, but not freeze-thaw cycles, in the Antarctic Dry Valleys
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Raw data for the manuscript: Influence of soil organic matter content on the toxicity of pesticides to soil invertebrates: A review
<p>Files containing Survival (LC50) and reproduction (EC50) data for soil invertebrates exposed to organic chemicals in different soils. The first file contains an overview of all the toxicity data used in the study. The second and third files contain the data used for the "direct comparisons" method, and the fourth and fifth files contain the data (and calculated ratios) used for the "indirect comparisons".</p>
FIG. 1 in Response of American Toads and Their Invertebrate Prey to Experimentally Elevated Soil pH
FIG. 1. Schematic demonstrating the experimental design, location of forest plots within the three study forests, and location of 1 m2 subplots within a forest plot. (A) General layout of the experiment among our three scales of interest: study forest, forest plot, and subplot. (B) Typical arrangement of six forest plots within each of the three study forests. Within each forest, white rectangles represent the three forest plots with untreated, acidified soils while lined rectangles represent the three limetreated, elevated soil pH forest plots. (C) An enlarged example from (B) of one possible random arrangement of the three 1 m2 subplots (light gray boxes; not drawn to scale) located along the perimeter of a forest plot with untreated, acidified soil. Each 1 m2 subplot in each forest plot was assigned to one of three enclosure treatments: a) no enclosure, b) enclosure without American Toads, and c) enclosure with four American Toads.
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Allen Brain Atlas
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OpenNeuro
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