Find research datasets worth reusing
Search datasets from major research repositories and use ShareScore to quickly assess how well each record supports discovery, access, and reuse.
78
datasets available to search
ShareScore release 0.9.0
Dataset results
78 results for “soil nematodes”
Рис. 3. Teratocephalon hexahamus gen. n., sp. n.: A — трофико-сенсорный отΑеΛ теΛа; B — трофико-генитаΛьный отΑеΛ теΛа; C, D — переΑний конец теΛа. a — анус, am — амфиΑы, v — вуΛьва, cc — гоΛовная капсуΛа, ve — «жеΛуΑочек», pu — заΑняя матка, nr — нервное коΛьцо, rc — прямая кишка, au — переΑняя матка, r — ренетта, ep — экскреторная пора, o — яичник, e — яйцо Fig. 3. Teratocephalon hexahamus gen. n., sp. n.: A — trophic-sensory part of the body; B — trophic-reproductive part of the body; C, D — anterior end of the body. a — anus; am — amphids; v — vulva; cc — cephalic capsule; ve — "ventricle"; pu — posterior uterus; nr — nerve ring; pu — anterior uterus; r — renetta; rc — rectum; ep — excretory pore; o — ovary; e — egg in Recent data on soil nematodes of the families Teratocephalidae and Metateratocephalidae from Primorsky Region, Russia
Рис. 3. Teratocephalon hexahamus gen. n., sp. n.: A — трофико-сенсорный отΑеΛ теΛа; B — трофико-генитаΛьный отΑеΛ теΛа; C, D — переΑний конец теΛа. a — анус, am — амфиΑы, v — вуΛьва, cc — гоΛовная капсуΛа, ve — «жеΛуΑочек», pu — заΑняя матка, nr — нервное коΛьцо, rc — прямая кишка, au — переΑняя матка, r — ренетта, ep — экскреторная пора, o — яичник, e — яйцо Fig. 3. Teratocephalon hexahamus gen. n., sp. n.: A — trophic-sensory part of the body; B — trophic-reproductive part of the body; C, D — anterior end of the body. a — anus; am — amphids; v — vulva; cc — cephalic capsule; ve — "ventricle"; pu — posterior uterus; nr — nerve ring; pu — anterior uterus; r — renetta; rc — rectum; ep — excretory pore; o — ovary; e — egg
Рис. 1. Teratocephalus lirellus Andrassy, 1969: A — трофико-сенсорный отΑеΛ теΛа; B — поΛовая система; C — фрагмент теΛа с боковым поΛем; D — хвост; E — фрагмент поΛовой системы и среΑней кишки; F, G — переΑний конец теΛа. am — амфиΑы, lf — боковое поΛе, v — вуΛьва, cc — гоΛовная капсуΛа, pu — заΑняя матка, au — переΑняя матка, r — ренетта, ep — экскреторная пора, o — яичник Fig. 1. Teratocephalus lirellus Andrassy, 1969: A — trophic-sensory part of the body; B — reproductive system; C — fragment of the body with a lateral field; D — tail; E — fragment reproductive system and intestine; F, H — anterior end of the body. am — amphid; lf — lateral field; v — vulva; cc — cephalic capsule; pu — posterior uterus; au — anterior uterus; r — renetta; ep — excretory pore; o — ovary in Recent data on soil nematodes of the families Teratocephalidae and Metateratocephalidae from Primorsky Region, Russia
Рис. 1. Teratocephalus lirellus Andrassy, 1969: A — трофико-сенсорный отΑеΛ теΛа; B — поΛовая система; C — фрагмент теΛа с боковым поΛем; D — хвост; E — фрагмент поΛовой системы и среΑней кишки; F, G — переΑний конец теΛа. am — амфиΑы, lf — боковое поΛе, v — вуΛьва, cc — гоΛовная капсуΛа, pu — заΑняя матка, au — переΑняя матка, r — ренетта, ep — экскреторная пора, o — яичник Fig. 1. Teratocephalus lirellus Andrassy, 1969: A — trophic-sensory part of the body; B — reproductive system; C — fragment of the body with a lateral field; D — tail; E — fragment reproductive system and intestine; F, H — anterior end of the body. am — amphid; lf — lateral field; v — vulva; cc — cephalic capsule; pu — posterior uterus; au — anterior uterus; r — renetta; ep — excretory pore; o — ovary
Рис. 2. Euteratocephalus montanus sp. n.: A — трофико-сенсорый и трофико-генитаΛьный отΑеΛы теΛа; B — хвост; C — трофико-генитаΛьный отΑеΛ теΛа; D — фрагмент теΛа с боковым поΛем; E, F — переΑний конец теΛа. am — амфиΑы, lf — боковое поΛе, v — вуΛьва, va — вагина, g — гемизониΑ, cc — гоΛовная капсуΛа, ve — «жеΛуΑочек», pr — преректум,r — ренетта, f — фазмиΑа,ep — экскреторная пора, o — яичник, e — яйцо Fig. 2. Euteratocephalus montanus sp. n.: A — trophic-sensory and trophic-reproductive parts of the body; B — tail; C — trophic-reproductive part of the body; D — fragment of the body with a side field; E, F — anterior end of the body. am — amphid, lf — lateral field; v — vulva; va — vagina; g — gemizonid; cc — cephalic capsule; ve — "ventricle"; pr — prerectum; r — renetta; f — phasmids, ep — excretory pore; o — ovary; e — egg in Recent data on soil nematodes of the families Teratocephalidae and Metateratocephalidae from Primorsky Region, Russia
Рис. 2. Euteratocephalus montanus sp. n.: A — трофико-сенсорый и трофико-генитаΛьный отΑеΛы теΛа; B — хвост; C — трофико-генитаΛьный отΑеΛ теΛа; D — фрагмент теΛа с боковым поΛем; E, F — переΑний конец теΛа. am — амфиΑы, lf — боковое поΛе, v — вуΛьва, va — вагина, g — гемизониΑ, cc — гоΛовная капсуΛа, ve — «жеΛуΑочек», pr — преректум,r — ренетта, f — фазмиΑа,ep — экскреторная пора, o — яичник, e — яйцо Fig. 2. Euteratocephalus montanus sp. n.: A — trophic-sensory and trophic-reproductive parts of the body; B — tail; C — trophic-reproductive part of the body; D — fragment of the body with a side field; E, F — anterior end of the body. am — amphid, lf — lateral field; v — vulva; va — vagina; g — gemizonid; cc — cephalic capsule; ve — "ventricle"; pr — prerectum; r — renetta; f — phasmids, ep — excretory pore; o — ovary; e — egg
Figure 1 in Soil mineral nitrogen content is increased by soil mesofauna and nematodes - a meta-analysis
Figure 1. Overall effect of the presence of soil (micro- and/or meso) fauna ('All', purple), as well as differentiated by size classes (blue: microfauna, red: mesofauna, orange: micro- and mesofauna) on soil mineral nitrogen compounds. Shown are the mean effect sizes (logarithm of the response ratio), 95 % confidence intervals, and the number of observations (within parentheses). Asterisks indicate levels of significance (* P = 0.05, ** P = 0.01, *** P <0.001).
Figure 1 in Positioning entomopathogenic nematodes for the future viticulture: exploring their use against biotic threats and as bioindicators of soil health
Figure 1. Example of the progression of authorized phytosanitary product usage in Spain against the most important diseases and pests of vineyards during the last decade. The size of each circle is proportional to the total number of phytosanitary authorized against each biotic threat.1
Soil biota (earthworm, nematode and soil surface fauna) data of organic, permaculture and conventional horticultural farms of Central Hungary
<p>This dataset has been produced from the PhD research of Alfréd Szilágyi supervised by Csaba Centeri and Eszter Kovács Tormáné. The study compared permaculture, organic and conventional farming systems regarding their ecosystem-service provision potential and sustainability. Multiple ecological indicators were measured in the field during the field study in 2020, and the basic datasets (soil test results; photo gallery of the studied farms with soil core sample; soil resistance and moisture; decomposition; earthworms; nematodes; soil surface fauna; pollinators; agrobiodiversity and habitat types) are uploaded in Zenodo separately to provide scientific data on permaculture systems. In this way, we hope to contribute to international efforts to evaluate the performance of agroecological agriculture alternatives. These publications also serve as supplements to the PhD thesis. For the sake of further usability of the datasets short description of the used methods is described. For further information please contact the authors.</p>
Nematode abundance in soil cores collected beneath mesquite trees in irrigated and non-irrigated plots at the Jornada Basin LTER site, 1988
This data package contains nematode abundance in soils subjected to an irrigation experiment in mesquite coppice dune habitats during the early years of Jornada Basin LTER (LTER-I and II). The purpose of this study was to quantify total nematode abundance, and the abundance of nematode functional groups, in irrigated and non-irrigated (control) soils beneath mesquite plants (Prosopis glandulosa). Soil cores were taken from three depths (0-50cm, 50-100cm, and 100-150cm) then divided into subsamples for nematode investigation. Nematodes were quantified via a semi-automatic elutriator with sugar flotation-sieving and the Baerman Funnel technique. Nematodes were counted and separated into trophic groups: fungal feeders, bacterial feeders, plant parasites, and omnivore-predators. The data collection began in March 1988 and ended in October 1988. This dataset is complete.
McMurdo Dry Valleys Soil Depth Effects on Anhydrobiosis of Nematodes
Investigation of the effect of soil depth on soil biota and properties was part of the McMurdo Dry Valleys Long Term Ecological Research (LTER) project. The proportion of soil nematodes found in an anhydrobiotic survival state was monitored at various soil depths in Taylor Valley to help accomplish this. Samples were taken on 21-Nov-1994 and 26-Dec-1994.
McMurdo Dry Valleys Soil Effects on Anhydrobiosis of Nematodes
Investigation of the effect of short-term variation in soil moisture and soil temperature on nematode anhydrobiosis as part of the McMurdo Dry Valleys Long Term Ecological Research (LTER) project. Â The percent of anhydrobiotic (coiled) nematodes with relation to soil moisture, temperature, and salinity was determined. Â The study began in the austral summer of 1996/1997. Locations on the south sides of both the Lake Hoare and Fryxell. Also, at a moss site near the Canada Glacier. Â Samples gathered on Jan 1st 1997
McMurdo Dry Valleys Soil wetting Effects on Anhydrobiosis of Nematodes
Investigation of the effect of short-term variation in soil moisture and soil temperature on nematode anhydrobiosis as part of the McMurdo Dry Valleys Long Term Ecological Research (LTER) project. The percent of anhydrobiotic (coiled) nematodes with relation to soil moisture and temperature was determined. The study began at 1030 on 10 December 1997 and ended on 11 December 1997. The samples were taken at 0, 6, 12, 18, and 24 hrs. Â Samples were collected in the south side of the Lake Hoare, Taylor Valley, Victoria lands, Antarctica
Environmental, molecular, and life history data associated with ecological and evolutionary nematode responses to soil phosphorus availability, McMurdo Dry Valleys, Antarctica
Elemental stoichiometry is a useful theoretical framework for understanding the sources and controls on nutrient availability that can structure the composition, diversity, and life history of biotic communities. One such relationship, as postulated by the growth rate hypothesis (GRH), is that organismal development rate is positively linked to cellular phosphorus (P). To test the GRH as part of the McMurdo Dry Valleys Long Term Ecological Research (LTER) program, we examined the effects of phosphorus (P) availability both in situ and in vitro, on the evolution of growth and development of free-living soil nematodes (primarily Plectus murrayi) that occur in the McMurdo Dry Valleys of Antarctica. During the 2008-2009 austral summer, we collected soils from two glacial till sequences, the Ross Sea till and Taylor II till, occurring in the Lake Fryxell and Lake Bonney basins, respectively, of Taylor Valley. Through a variety of subsequent analyses, we generated the environmental, molecular, and life history trait data contained herein. In addition, this package contains body size and biomass data for nematodes isolated from soil samples collected during the 1999-2000 and 2004-2005 austral summers.
McMurdo Dry Valleys Soils Snowfence Nematode and Metazoa Survey Experiment
Increases in soil moisture from snow packs may influence distribution and abundances of soil invertebrates. In this study, two snow fences were erected in Lake Fryxell and Lake Bonney basins to trap snow and examine the effects of increased snow pack on soil physical, chemical and biological properties.
Long-term nitrogen addition alters the community and energy channel but not diversity of soil nematodes in a subtropical forest
Summary <ol> <li>Research has indicated that increases in nitrogen (N) deposition can greatly affect ecosystem processes and functions. There is limited information about the effects of long-term N addition on soil nematodes and their functional composition, although nematodes are the most abundant multicellular animals on Earth.</li> <li>We conducted a field experiment in 2004 with four levels of N addition (0, 60, 120, and 240 kg N ha<sup>-1 </sup>yr<sup>-1</sup>) in a subtropical <i>Cunninghamia lanceolata</i> forest. Soil samples with three depths (0-20, 20-40 and 40-60 cm) were collected and the community structure, diversity and trophic groups of soil nematodes were determined in 2014.</li> <li>N addition significantly increased the abundance of bacterial- and fungal-feeding nematodes, but decreased the abundance of plant-feeding nematodes at the 0-20 cm soil layer. Accordingly, the plant parasite index and enrichment index decreased but the basal index and channel index increased, which weaken the importance of the plant-based energy channel, but enhance the importance of the fungal-based energy channel. N addition had no effects on the diversity of soil nematodes in three soil depths. Structural equation modeling analysis indicated that N loading directly changed plant-feeding (total <i>r<sup>2</sup></i>=0.42) nematodes, or indirectly affected bacterial- (<i>r<sup>2</sup></i>=0.43), fungal- (<i>r<sup>2</sup></i>=0.31) and plant-feeding nematodes via change soil nutrients, soil water content and pH.</li> <li>These findings suggest that N addition can change the community structure and energy channels soil nematodes, which would affect soil processes and food web functions in forest soils under future environmental change scenarios.</li> </ol>
Drivers of nematode diversity in forest soils across climatic zones
<p>Nematodes are the most abundant multi-cellular animals in soil, influencing key processes and functions in terrestrial ecosystems. Yet, little is known about the drivers of nematode abundance and diversity in forest soils across climatic zones. This is despite forests cover approximately 30% of the earth's land surface, provide many crucial ecosystem services but strongly vary in hydrothermal conditions and associated ecosystem properties across climatic zones. Here, we collected nematode samples from 13 forests across a latitudinal gradient. We divided this gradient in temperate, warm-temperate, and tropical climatic zones and found that across the gradient, nematode abundance and diversity were mainly influenced by soil organic carbon. However, mean annual temperature and total soil phosphorus in temperate zones, soil pH in warm-temperate zones, and mean annual precipitation in tropical zones were more important in driving nematode alpha-diversity, biomass and abundance. Additionally, nematode beta-diversity was higher in temperate than in warm-temperate and tropical zones. Together, our findings demonstrate that the drivers of nematode diversity in forested ecosystems are affected by the spatial scale and climatic conditions considered. This implies that high resolution studies are needed to accurately predict how soil functions respond if climate conditions move beyond the coping range of soil organisms.</p>
Figure 5 in Comparative analysis of soil nematode biodiversity from five different fruit orchards in Osmaneli district, Bilecik, Türkiye
Figure 5: Feeding types and their relative abundance of nematodes at different fruit tree orchards.
Agriculture erases climate constraints on soil nematode communities across large spatial scales
<p>Data supporting "Agriculture erases climate constraints on soil nematode communities across large spatial scales".</p>
Figure 2 in Community analysis of soil-inhabiting nematodes in natural vegetations of Singalila National Park, West Bengal (India)
Figure 2. Taxonomic diversity (abundance and genera) of nematode orders in Singalila National Park.
Data from: Non-linear responses of soil nematode community composition to increasing aridity
Aim: Increasing aridity under global change is predicted to have a profound impact on the structure and functioning of terrestrial ecosystems, yet we have poor understanding of how belowground communities respond. In order to understand the longer-term responses of different trophic levels in the soil food web to increasing aridity, we investigated the abundance, richness and community similarity of the soil nematode community along a 3200-km aridity gradient. Location: A transect across semi-arid and arid grasslands in Northern China, where the aridity ranges from 0.43 to 0.97. Time period: July and August 2012. Major taxa studied: Soil-borne Nematoda. Methods: We used Generalized Additive (Mixed) Models to analyze the abundance, richness and community similarity patterns of soil nematodes. We used Structural Equation Modelling (SEM) to disentangle the direct and indirect environmental drivers (aridity, soil and plant variables) of the nematode community. Results: The abundance, richness and similarity of nematode communities declined non-linearly with increasing aridity. The most pronounced decline in nematode richness and community similarity occurred under arid conditions (aridity > 0.80). However, the shape of response to aridity differed among nematode feeding groups. Under arid conditions, the abundance and richness of bacterial feeders were less sensitive to changes in aridity than fungal feeders. The SEM analysis revealed that nematode community responses to aridity were not mediated via changes in plant and soil variables, but rather were directly affected by aridity. Main conclusions: Our results show that in mesic grasslands increasing aridity primarily caused decline in nematode abundance, whereas increasing aridity in xeric grasslands led to loss of nematode diversity. The non-linear responses of nematodes to aridity could result in non-linear shifts in ecosystem functioning as well, because soil nematodes operate at various trophic levels in the soil food web, thereby influencing the performance of plants, soil biodiversity and biogeochemical cycling.
Functional traits of soil nematodes define their response to nitrogen fertilization
<p>1. Nitrogen (N) fertilization and warming are two crucial global change factors affecting the soil nematode communities. The effects of N fertilization and warming, however, on nematode communities in soils are inconsistent across ecosystems and maybe be even opposite.</p> <p>2. One key reason is that the commonly used taxonomic diversity is less sensitive to environmental changes than the seldom-used trait-based indicators. To verify this, we performed an eight-year field experiment with four N fertilization levels with and without soil warming and collected an extensive dataset consisting of (i) six traits related to the nematode performance, i.e., body size, maximum body length, maximum body width, stylet length, esophagus length, and intestinal length; (ii) the taxonomic alpha (richness and abundance) and beta-diversity (Bray-Curtis dissimilarities) of the whole nematode community and each nematode functional group, (iii) soil food web resources (the total taxonomic richness and abundance of plant, bacterial and fungal communities), and (iv) soil properties (pH, total, ammonium and nitrate N, microbial N and C, total and available P and soil water content).</p> <p>3. We found that N fertilization altered plant diversity and soil nitrate levels, which in turn decreased taxonomic alpha diversity of two nematode functional groups (phytophagous nematodes and predators), but taxonomic diversity for the whole nematode community remained stable. The decreased taxonomic alpha diversity of phytophagous nematodes resulted in increased maximum body width, but decreased stylet length and esophageal length. Mild warming (~ 0.7 °C) had no effects on soil properties and soil food web resources, and the taxonomic diversity or nematode traits remained unchanged.</p> <p>4. Our results reveal that nematode functional traits show strong responses to N fertilization as individual nematode groups adapted quickly to changed soil properties and food web resources. Taxonomic diversity indices, however, were more stable under these changes showing that the functional composition of nematode communities may respond in the short-term despite little effects on species diversity. Thus, the trait-based indicators not only reveal how nematodes respond to N fertilization, but also how nematodes mediate the effects of N fertilization on ecosystem functioning (i.e., soil nutrient cycling).</p>
Data from: Nonlinear responses of soil nematode community composition to increasing aridity
Open the record for dataset details and reuse information.
ScienceDex guides
Understand access before you commit
These curated guides explain access requirements, typical timelines, costs, and reuse considerations for widely used research datasets.
Allen Brain Atlas
Allen Brain Atlas is an Allen Institute collection of brain map atlases, datasets, APIs, and analysis tools covering mouse, human, and non-human primate brain resources.
Annotated Behaviour and Observability Dataset (ABODe)
ABODe is a University of Edinburgh DataShare dataset for behavior classification in group-housed mice using home-cage video, identities, bounding boxes, ground-plate positions, and annotator labels.
DANDI Archive for NWB datasets
DANDI is a BRAIN Initiative archive for publishing and sharing neurophysiology data, including electrophysiology, optophysiology, and behavioral data packaged as NWB and related standards.
International Brain Laboratory public data
The International Brain Laboratory public data releases expose standardized mouse decision-making experiments, including Neuropixels recordings, widefield calcium imaging, behavior, and session metadata accessed through the ONE API.
OpenNeuro
OpenNeuro is a free, open platform for sharing neuroimaging datasets, with public search, dataset pages, and download paths for web, S3, DataLad, and the OpenNeuro CLI.