Microbial community size is a potential predictor of nematode functional group in limed grasslands

Neilson, Roy; Caul, Sandra; Fråser, F C; King, Dale; Mitchell, Susan M.; Roberts, David M.; Giles, Madeline

doi:10.1016/j.apsoil.2020.103702

Cited by 32 publications

(13 citation statements)

References 89 publications

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“…Thakur and Geisen (2019) emphasized the importance of top‐down (predators) control on soil microbiome and the function they carry in soils: indirect or direct predator pressure shapes the whole community, which determines nutrient and organic matter turnover. On the other hand, the reverse trend can be observed with a bottom‐up control from the availability in basal resources on higher trophic levels (Neilson et al, 2020). Understanding control mechanisms driving soil trophic functions could be key to regulate soil greenhouse gas emissions or promote plant performance.…”

Section: Discussionmentioning

confidence: 99%

Impacts of field margin orientation on populations of soil‐dwelling invertebrates in relation to the direction and intensity of field traffic

Carlesso

Beadle²,

Cook

et al. 2021

Soil Use and Management

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Sown field margins are a central part of agri‐environmental schemes aiming to improve biodiversity and ecosystem services in agricultural landscapes. Despite the knowledge that key services are delivered by belowground biodiversity, the impacts of field margins on populations of soil invertebrates both within the margins and the neighbouring crops remain unclear. We investigated the effect of field margin orientation with respect to the direction of the tramlines upon populations of soil‐dwelling mesofauna with focus on Acari (mites) and Collembola (springtails). Two margins on adjacent sides of the same field and their neighbouring cropped areas were examined: one margin oriented perpendicular to the tramlines, and one parallel to the tramlines. This sampling design was repeated on two farms with distinct soil management (no till vs. minimum tillage) and crop rotation (diverse‐long‐rotation vs. cereal/oilseed‐short‐rotation) in two seasons (autumn vs. spring) over two years. The distribution of invertebrates in the cropped areas depended on the orientation of the margins and the taxa studied. Reduced abundance of Collembola and Acari were found at both farms in the cropped area where machinery turns (margin perpendicular to tramlines), in comparison with the cropped area where margins and tramlines were parallel. This study suggests the existence of interacting impacts between the margins and field operations (trafficking and resulting compaction) on populations of soil mesofauna.

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Section: Discussionmentioning

confidence: 99%

Impacts of field margin orientation on populations of soil‐dwelling invertebrates in relation to the direction and intensity of field traffic

Carlesso

Beadle²,

Cook

et al. 2021

Soil Use and Management

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“…Nuestro estudio no muestra patrones coincidentes entre las abundancias de hongos y nematodos fungívoros y entre bacterias y nematodos bacterívoros. En ocasiones, se ha encontrado que los nematodos bacterívoros pueden reducir las abundancias de las poblaciones de bacterias (Neilson et al 2020), aunque, si hay recursos abundantes, las abundancias de bacterias y hongos y de nematodos bacterívoros y fungívoros pueden aparecer positivamente relacionados (Kou et al 2020). En ecosistemas antárticos el calentamiento del clima produjo un desacople entre las abundancias de bacterias y los nematodos que se alimentan de ellas (Knox et al 2017).…”

Section: Discussionunclassified

Efecto de la deposición de N y P atmosférico en la microfauna edáfica de sistemas de alta montaña de la red de Parques Nacionales

Moreno

Iglesias²,

Usero

et al. 2021

ECOS

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Los impulsores de Cambio Global con mayor impacto en los ecosistemas de alta montaña son los cambios climático y de uso del suelo y la deposición de nitrógeno (N). En España, un factor adicional es la deposición de fósforo (P) proveniente del polvo sahariano. La deposición atmosférica de N y P puede tener un gran impacto en el ciclado de nutrientes y en la biota edáfica. Durante tres años hemos simulado deposición atmosférica de N y P en cuatro ecosistemas alpinos de la red de Parques Nacionales siguiendo un gradiente latitudinal de aridez y analizado sus efectos sobre las comunidades de nematodos, hongos y bacterias. La microbiota redujo su presencia con la aridez, pero solo los hongos respondieron a la deposición de N. La abundancia de nematodos también disminuyó con la aridez, y, mientras que la deposición de N aumentó su biomasa debido al incremento de la abundancia de nematodos bacterívoros, el P incrementó la contribución porcentual de bacterívoros y fungívoros simplificando las redes tróficas edáficas. Los nematodos fungívoros fueron más sensibles que los bacterívoros a los desbalances estequiométricos y, en general, las comunidades de sistemas áridos se caracterizaron por una prevalencia del canal bacterívoro de descomposición de la materia orgánica y una menor importancia de la herbivoría subterránea. El incremento de la aridez, la deposición de N atmosférico y potencial aumento de la deposición de P sahariano podrían tener efectos a largo plazo en la composición y funciones ecosistémicas de las redes tróficas edáficas de alta montaña.

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“…Concisely, the lower temperature and higher precipitation resulted in the accumulation of SOC (Craine et al, 2010). The SOC serves as a major determinant of microbes, which is positively correlated with nematodes and contribute to the higher nematode diversity in near 30 Neilson et al, 2020;Song et al, 2017). Complementary to SOC, the content of soil total nitrogen (TN) greatly influences the abundance of opportunistic nematodes with cp values of 1 or 2 (Shaw et al, 2019).…”

Section: Effects Of Land-use Change On Nematode Diversity Patterns Along Latitudesmentioning

confidence: 99%

“…Different groups of nematodes have different preferred pH, which could impact on the physiology and community composition of nematodes along a pH gradient (Cong et al, 2020;Xiao et al, 2020). As neutral pH is linked to highest soil microbial diversity (Fierer et al, 2009;Lauber et al, 2009), these changes would be scaled up to the nematodes (Neilson et al, 2020). However, the neutral pH was linked to the lowest CWM speciation rates of nematodes.…”

Section: Contributions Of Speciation Rates To Nematode Diversity Patternsmentioning

confidence: 99%

Agricultural habitats are dominated by rapidly evolving nematodes revealed through phylogenetic comparative methods

Gong

Chen

Geisen

et al. 2021

Soil Biology and Biochemistry

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Microbial community size is a potential predictor of nematode functional group in limed grasslands

Cited by 32 publications

References 89 publications

Impacts of field margin orientation on populations of soil‐dwelling invertebrates in relation to the direction and intensity of field traffic

Impacts of field margin orientation on populations of soil‐dwelling invertebrates in relation to the direction and intensity of field traffic

Efecto de la deposición de N y P atmosférico en la microfauna edáfica de sistemas de alta montaña de la red de Parques Nacionales

Agricultural habitats are dominated by rapidly evolving nematodes revealed through phylogenetic comparative methods

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