land use intensification
Recently Published Documents


TOTAL DOCUMENTS

135
(FIVE YEARS 42)

H-INDEX

26
(FIVE YEARS 3)

2022 ◽  
Vol 327 ◽  
pp. 107830
Author(s):  
Esra H. Sohlström ◽  
Ulrich Brose ◽  
Roel van Klink ◽  
Björn C. Rall ◽  
Benjamin Rosenbaum ◽  
...  

2022 ◽  
Vol 17 (1) ◽  
Author(s):  
Sana Romdhane ◽  
Aymé Spor ◽  
Samiran Banerjee ◽  
Marie-Christine Breuil ◽  
David Bru ◽  
...  

Abstract Background Soil microbial communities are major drivers of cycling of soil nutrients that sustain plant growth and productivity. Yet, a holistic understanding of the impact of land-use intensification on the soil microbiome is still poorly understood. Here, we used a field experiment to investigate the long-term consequences of changes in land-use intensity based on cropping frequency (continuous cropping, alternating cropping with a temporary grassland, perennial grassland) on bacterial, protist and fungal communities as well as on their co-occurrence networks. Results We showed that land use has a major impact on the structure and composition of bacterial, protist and fungal communities. Grassland and arable cropping differed markedly with many taxa differentiating between both land use types. The smallest differences in the microbiome were observed between temporary grassland and continuous cropping, which suggests lasting effects of the cropping system preceding the temporary grasslands. Land-use intensity also affected the bacterial co-occurrence networks with increased complexity in the perennial grassland comparing to the other land-use systems. Similarly, co-occurrence networks within microbial groups showed a higher connectivity in the perennial grasslands. Protists, particularly Rhizaria, dominated in soil microbial associations, as they showed a higher number of connections than bacteria and fungi in all land uses. Conclusions Our findings provide evidence of legacy effects of prior land use on the composition of the soil microbiome. Whatever the land use, network analyses highlighted the importance of protists as a key element of the soil microbiome that should be considered in future work. Altogether, this work provides a holistic perspective of the differential responses of various microbial groups and of their associations to agricultural intensification.


2022 ◽  
Vol 112 ◽  
pp. 105846
Author(s):  
Mingtao Xiang ◽  
Qiangyi Yu ◽  
Yan Li ◽  
Zhou Shi ◽  
Wenbin Wu

Geoderma ◽  
2022 ◽  
Vol 406 ◽  
pp. 115508
Author(s):  
Emilio Rodríguez-Caballero ◽  
Andrés Reyes ◽  
Alexandra Kratz ◽  
Jennifer Caesar ◽  
Emilio Guirado ◽  
...  

Author(s):  
María E. Sanjuan ◽  
Jaime Martinez-Valderrama ◽  
Alberto Ruiz ◽  
Gabriel del Barrio

We explored the relative importance of climate oscillations and human-driven disturbances on the change of vegetation biomass in agroecosystems, and whether it is associated with land use. The study was carried out in the drylands of the Iberian Peninsula, NW Maghreb, Palestinian West Bank, Mozambique, China and NE Brazil, using satellite time-series and the corresponding climate fields, at ten-year observation periods with spatial and temporal resolutions of 1000 m (250 m in Palestine) and one year, respectively. For each region, we separated the relative weights of climate and time by fitting multiple-stepwise regressions to a vegetation index as the dependent variable, and annual aridity (Aridity) and year number (Time) as predictors. The relative strength of the resulting standard partial regression coefficients was then compared by the Wilcoxon Signed Ranks test, and their combined associations with land uses were determined using chi-square tests. Some points of convergence are: 1. The relative weights of Aridity and Time depend on particular regional conditions and can be determined. 2. Such weights are associated with land use intensification, such that if vegetation increases over Time, Aridity increases its relative importance with intensification; if vegetation is degrading, Aridity is always more important than Time. 3. Aridity is an indicator of vulnerability to climate warming. Resilience can be improved by reducing land use intensification. 4. Vulnerability may worsen under constant climate if agriculture is intensified. These patterns enhance an integrated understanding of Sustainable Development Goals Indicator 15.3.1, particularly its land cover and productivity trend components.


Author(s):  
Kolja Bergholz ◽  
Lara-Pauline Sittel ◽  
Michael Ristow ◽  
Florian Jeltsch ◽  
Lina Weiss

Land-use intensification is the main factor for the catastrophic decline of insect pollinators. However, land-use intensification includes multiple processes that act across various scales and should affect pollinator guilds differently depending on their ecology. We aimed to reveal how two main pollinator guilds, wild bees (specialists) and hoverflies (generalists), respond to different land-use intensification measures, i.e. arable field cover (AFC), landscape heterogeneity (LH) and functional flower composition of local plant communities as a measure of habitat quality. We sampled wild bees and hoverflies on 22 dry grassland sites within a highly intensified landscape (NE Germany) within three campaigns using pan traps. We estimated AFC and LH on consecutive radii (60-3000m) around the dry grassland sites and estimated the local functional flower composition. Wild bee species richness and abundance was positively affected by LH and negatively by AFC at small scales (140-400m). In contrast, hoverflies were positively affected by AFC and negatively by LH at larger scales (500-3000m), where both landscape parameters were negatively correlated to each other. At small spatial scales, though, LH had a positive effect on hoverflies abundance. Functional flower diversity had no positive effect on pollinators, but conspicuous flowers seem to attract abundance of both guilds. In conclusion, landscape parameters contrarily affect two pollinator guilds at different scales. The correlation of landscape parameters may influence the observed relationships between landscape parameters and pollinators. Hence, effects of land-use intensification seems to be highly landscape-specific.


2021 ◽  
Vol 129 ◽  
pp. 107884
Author(s):  
Erika Bazzato ◽  
Elisa Serra ◽  
Simona Maccherini ◽  
Michela Marignani

Sign in / Sign up

Export Citation Format

Share Document