Windstorms as mediator of soil nematode community changes: Evidence from European spruce forest

Renčo, Marek; Čerevková, Andrea

doi:10.1515/helm-2017-0004

Cited by 8 publications

(4 citation statements)

References 35 publications

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“…These findings support our hypothesis that biological diversity would be lowest in the agricultural soils due to periodic perturbation, land management, and crop monoculturing, consistent with the results by Neher et al, (2005); even though AGR had the highest overall nematode abundance, likely due the periodic organic manure inputs (Hu et al, 2018). Bacterivorous nematodes are often the most dominant feeding group in forest (Neher et al, 2005;Yeates, 2007;Renčo & Čerevková, 2017) and agricultural (Neher et al, 2005, Renčo et al, 2010 soils. The preponderance of Ba 2 bacterivores (A. nanus, C. persegnis, and C. propinquus) in all ecosystems in our study was likely due to the high microbial biomasses in FOR and MEA and to the management (tillage and fertilisation) in the corn monoculture in AGR.…”

Section: Relationships Of Ecosystem Type With Soil Properties and Nemsupporting

confidence: 86%

The effect of soil type and ecosystems on the soil nematode and microbial communities

2020

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SummaryIntegrated studies are required to better understand the relationships between groups of soil microfauna under the influence of various biotic and abiotic factors that drive and characterise ecosystems. We analysed soil nematode communities and microbial diversity and the properties of three soil types to assess the effect of these environmental variables on biological diversity in natural (forest), semi-natural (meadow), and managed (agriculture) habitats of the Slovak Republic. The type of ecosystem and soil and the interaction of both factors had considerable effects on most monitored abiotic and biotic soil properties. The forest with a Chernozem soil had the most nematode species, highest nematode diversity, highest abundance of nematode within functional guilds, best values of ecological and functional indices, highest microbial biomass, highest microbial richness and diversity, and the highest values of various soil properties, followed by meadows with a Cambisol soil. The agricultural ecosystem with a Stagnosol soil had the lowest biological diversity and values of the soil properties. Several nematode species were new for Slovak nematode fauna. Sampling date and the interaction of all three factors (ecosystem × soil × date) had minor or no effect on most of the parameters, except soil moisture content, microbial richness, nematode channel ratio, nematode maturity index, and plant parasitic index. Both the biological indicators and basic soil properties indicated that the natural forest with a Chernozem soil was the best habitat from an ecological point of view. This ecosystem is thus the most appropriate for ecological studies.

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Section: Relationships Of Ecosystem Type With Soil Properties and Nemsupporting

confidence: 86%

The effect of soil type and ecosystems on the soil nematode and microbial communities

2020

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“…These changes were likely determined by the sustained nutrient enrichment produced by defoliated and dead trees, which increased the abundance of opportunistic nematodes in the lower c‐p groups (supported by the higher values of the enrichment index under those trees). Previous studies have reported similar trends in the modification of the values of these indices associated to disturbances such as windstorms (Renčo & Čerevková, ), floodings (Wagner, Eisenhauer, & Cesarz, ), experimental warming (Thakur et al., ), or fires (Pen‐Mouratov, He, & Steinberger, ). Functionally, lower values of the maturity index and higher values of the plant parasitic and enrichment indices frequently reflect a high microbial abundance and activity that translate into faster N mineralization and soil respiration rates (Bongers & Bongers, ; Ferris & Matute, ).…”

Section: Discussionsupporting

confidence: 58%

Cascading spatial and trophic impacts of oak decline on the soil food web

et al. 2018

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1. Tree defoliation and mortality have considerably increased world-wide during the last decades due to global change drivers such as increasing drought or invasive pests and pathogens. However, the effects of this tree decline on soil food webs are poorly understood.2. In this study, we evaluated the impacts of Quercus suber decline on soil food webs of Mediterranean mixed forests invaded by the exotic oomycete pathogen Phytophthora cinnamomi, using soil nematodes as bioindicator taxa. We used a spatially explicit neighbourhood approach to predict the characteristics of the nematode community (diversity, trophic structure, and several indices indicative of soil food web conditions) as a function of the characteristics of the tree and shrub community (species composition, size, and health status). 3.Our results indicate that the process of defoliation and mortality of Q. suber caused significant alterations in the nematode trophic structure increasing the abundance of lower trophic levels (bacterivores, fungivores, and herbivores) and decreasing the abundance of higher levels (predators and omnivores). Furthermore, Q. suber decline altered the functional composition of soil communities, producing a setback of the ecological succession in the soil food web to an earlier stage (decrease in the maturity index and increase in the plant parasitic index), simplified soil food webs (decrease in the structure index), and shifts in the predominant decomposition channel (increase in the fungivores/bacterivores ratio). 4. We also detected contrasting characteristics of the nematode community in neighbourhoods dominated by coexisting woody species, which suggests potential for long-term indirect effects on soil food webs due to the substitution of Q. suber by non-declining species. Synthesis.Our study provides novel results that show the major impacts that ongoing health deterioration of dominant tree species can have on the structure and composition of soil food webs in forest systems invaded by exotic pathogens, with cascading consequences for soil biogeochemical processes in both the short-and long term. K E Y W O R D Sbioindicators, neighbourhood models, Phytophthora cinnamomi, plant-soil interactions, Quercus suber, soil food web, soil nematodes, soil-borne pathogens, spatial patterns, tree mortality Handling Editor: Eric Allan | 1201Journal of Ecology DOMÍNGUEZ-BEGINES Et al.

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“…The dying-off process in mountain spruce forests was caused by several biotic (bark beetles) and non-biotic factors (air pollution), forming a cause-and-effect chain that reinforced the disease process, resulting in a total annihilation of the stand over an extended period of time [81][82][83]. Air pollution, prolonged summer droughts in the years 2003-04 and 2006-07, and the catastrophic hurricane of 2004 resulted in the weakening of spruce stands in the montane zone [84,85]. Bark beetles attacked the weakened trees as part of a large-scale infestation which affected a considerable forest area in the Silesian Beskids within a short time [86].…”

Section: Discussionmentioning

confidence: 99%

The Human Impact on Changes in the Forest Range of the Silesian Beskids (Western Carpathians)

Sobala

Rahmonov

2020

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Changes in forest range are caused by human activity in many regions of the world. The aim of this paper is an attempt to determine the impact of pastoral and forest management on changes in forest cover and their fragmentation in the Silesian Beskids (southern Poland) in 1848–2015. Historical maps and landscape metrics were used to study changes in forest cover. Using a digital map of forests, analyses of the distribution of forest communities, site types and their condition were conducted. Since 1848 the forest area has increased by 11.8%, while the area of forest core zones has increased by 16.2%, accompanied by a 4.5% reduction in the forest’s internal buffer zone. From the mid-nineteenth century, the forest range has been systematically growing from 82.1 to 93.9% because of the pastureland abandonment and forest regeneration, despite temporary logging resulting in forest fragmentation. Minor changes in core area index (CAI) from 80.41 to 87.55 indicate that pastoral economy did not result in considerable fragmentation of forests. The impact of forest management was greater as the sites characterised by natural condition occupy only 28% of the forest land and anthropogenically transformed ones dominate occupying over 50%. An artificial spruce monoculture was died-off and large felling areas were created at the beginning of the twenty-first century covering almost 40% of the study area.

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Windstorms as mediator of soil nematode community changes: Evidence from European spruce forest

Cited by 8 publications

References 35 publications

The effect of soil type and ecosystems on the soil nematode and microbial communities

The effect of soil type and ecosystems on the soil nematode and microbial communities

Cascading spatial and trophic impacts of oak decline on the soil food web

The Human Impact on Changes in the Forest Range of the Silesian Beskids (Western Carpathians)

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