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  Subjects -> CONSERVATION (Total: 128 journals)
Showing 1 - 37 of 37 Journals sorted by number of followers
Conservation Biology     Hybrid Journal   (Followers: 276)
Biological Conservation     Hybrid Journal   (Followers: 245)
Biodiversity and Conservation     Open Access   (Followers: 194)
Ecological Economics     Hybrid Journal   (Followers: 138)
Ecology and Evolution     Open Access   (Followers: 97)
Global Ecology and Biogeography     Hybrid Journal   (Followers: 65)
Environmental Conservation     Hybrid Journal   (Followers: 63)
Ecology and Society     Open Access   (Followers: 51)
Animal Conservation     Hybrid Journal   (Followers: 48)
Functional Ecology     Hybrid Journal   (Followers: 47)
Restoration Ecology     Hybrid Journal   (Followers: 46)
Frontiers in Ecology and Evolution     Open Access   (Followers: 45)
Aquatic Conservation Marine and Freshwater Ecosystems     Hybrid Journal   (Followers: 44)
Diversity and Distributions     Open Access   (Followers: 42)
Nature Conservation     Open Access   (Followers: 35)
Landscape and Urban Planning     Hybrid Journal   (Followers: 35)
Conservation     Hybrid Journal   (Followers: 28)
Environmental and Resource Economics     Hybrid Journal   (Followers: 28)
Conservation Science     Open Access   (Followers: 28)
Journal for Nature Conservation     Hybrid Journal   (Followers: 27)
Journal of the Institute of Conservation     Hybrid Journal   (Followers: 25)
Conservation Genetics     Hybrid Journal   (Followers: 23)
Ecological Restoration     Full-text available via subscription   (Followers: 22)
Forest Policy and Economics     Hybrid Journal   (Followers: 21)
Society & Natural Resources: An International Journal     Hybrid Journal   (Followers: 21)
Resources, Conservation & Recycling     Hybrid Journal   (Followers: 20)
Oryx     Open Access   (Followers: 20)
Journal of Rural Studies     Hybrid Journal   (Followers: 19)
Wildlife Research     Hybrid Journal   (Followers: 18)
Journal of Industrial Ecology     Hybrid Journal   (Followers: 17)
African Journal of Ecology     Hybrid Journal   (Followers: 17)
International Journal of Sustainable Development     Hybrid Journal   (Followers: 17)
Studies in Conservation     Hybrid Journal   (Followers: 16)
Nature Sustainability     Hybrid Journal   (Followers: 15)
Lakes & Reservoirs Research & Management     Hybrid Journal   (Followers: 14)
Global Ecology and Conservation     Open Access   (Followers: 13)
African Journal of Range & Forage Science     Hybrid Journal   (Followers: 12)
Journal for the Study of Religion, Nature and Culture     Hybrid Journal   (Followers: 12)
Wildfowl     Open Access   (Followers: 11)
Challenges in Sustainability     Open Access   (Followers: 10)
Arid Land Research and Management     Hybrid Journal   (Followers: 10)
Journal of Natural Resources Policy Research     Hybrid Journal   (Followers: 10)
Business Strategy and the Environment     Hybrid Journal   (Followers: 10)
Aquaculture, Aquarium, Conservation & Legislation - International Journal of the Bioflux Society     Open Access   (Followers: 9)
Ideas in Ecology and Evolution     Open Access   (Followers: 9)
Bulletin of the American Museum of Natural History     Open Access   (Followers: 9)
Journal of Cultural Heritage Management and Sustainable Development     Hybrid Journal   (Followers: 8)
International Journal of Global Energy Issues     Hybrid Journal   (Followers: 8)
International Journal of Sustainable Development and World Ecology     Hybrid Journal   (Followers: 8)
Journal of East African Natural History     Full-text available via subscription   (Followers: 7)
Environmental and Sustainability Indicators     Open Access   (Followers: 7)
Natural Resources Forum     Hybrid Journal   (Followers: 7)
Advanced Sustainable Systems     Hybrid Journal   (Followers: 6)
Journal of Urban Ecology     Open Access   (Followers: 6)
Earth's Future     Open Access   (Followers: 6)
Natural Resources and Conservation     Open Access   (Followers: 6)
African Journal of Wildlife Research     Full-text available via subscription   (Followers: 6)
Environment Conservation Journal     Open Access   (Followers: 6)
International Journal of Biodiversity Science and Management     Open Access   (Followers: 6)
Human Dimensions of Wildlife: An International Journal     Hybrid Journal   (Followers: 6)
International Journal of Architectural Heritage: Conservation, Analysis, and Restoration     Hybrid Journal   (Followers: 6)
Journal of Ecology and The Natural Environment     Open Access   (Followers: 5)
Journal of International Wildlife Law & Policy     Hybrid Journal   (Followers: 5)
Environment and Planning E : Nature and Space     Hybrid Journal   (Followers: 5)
American Journal of Rural Development     Open Access   (Followers: 5)
Journal of the American Institute for Conservation     Hybrid Journal   (Followers: 4)
International Journal of Social Ecology and Sustainable Development     Full-text available via subscription   (Followers: 4)
Australasian Plant Conservation: Journal of the Australian Network for Plant Conservation     Full-text available via subscription   (Followers: 4)
Archeomatica     Open Access   (Followers: 4)
Ethnobiology and Conservation     Open Access   (Followers: 3)
Interdisciplinary Environmental Review     Hybrid Journal   (Followers: 3)
Journal of Sustainable Mining     Open Access   (Followers: 3)
Southern Forests : a Journal of Forest Science     Hybrid Journal   (Followers: 3)
International Journal of Environment and Pollution     Hybrid Journal   (Followers: 3)
Ecological Psychology     Hybrid Journal   (Followers: 3)
AICCM Bulletin     Hybrid Journal   (Followers: 3)
Asian Journal of Sustainability and Social Responsibility     Open Access   (Followers: 2)
Rural Sustainability Research     Open Access   (Followers: 2)
Neotropical Biology and Conservation     Open Access   (Followers: 2)
Sustainable Earth     Open Access   (Followers: 2)
Journal of Paper Conservation     Hybrid Journal   (Followers: 2)
International Soil and Water Conservation Research     Open Access   (Followers: 2)
Eastern European Countryside     Open Access   (Followers: 2)
Pacific Conservation Biology     Full-text available via subscription   (Followers: 2)
Tanzania Journal of Forestry and Nature Conservation     Full-text available via subscription   (Followers: 2)
Madagascar Conservation & Development     Open Access   (Followers: 2)
European Countryside     Open Access   (Followers: 1)
Rangeland Journal     Hybrid Journal   (Followers: 1)
Conservation Science and Practice     Open Access   (Followers: 1)
Wildlife Australia     Full-text available via subscription   (Followers: 1)
Forum Journal     Full-text available via subscription   (Followers: 1)
Journal of Threatened Taxa     Open Access   (Followers: 1)
Tropical Conservation Science     Open Access   (Followers: 1)
Park Watch     Full-text available via subscription   (Followers: 1)
Resources, Conservation & Recycling : X     Open Access   (Followers: 1)
World Review of Entrepreneurship, Management and Sustainable Development     Hybrid Journal   (Followers: 1)
Conservación Vegetal     Open Access   (Followers: 1)
npj Urban Sustainability     Open Access  
Recursos Rurais     Open Access  
Madera y Bosques     Open Access  
Intervención     Open Access  
Soil Ecology Letters     Hybrid Journal  
Tropical Ecology     Hybrid Journal  
Socio-Ecological Practice Research     Hybrid Journal  
Process Integration and Optimization for Sustainability     Hybrid Journal  
Water Conservation Science and Engineering     Hybrid Journal  
Nepalese Journal of Development and Rural Studies     Open Access  
VITRUVIO : International Journal of Architectural Technology and Sustainability     Open Access  
Sustainable Environment Agricultural Science (SEAS)     Open Access  
Savana Cendana     Open Access  
Arcada : Revista de conservación del patrimonio cultural     Open Access  
Nusantara Bioscience     Open Access  
Indonesian Journal of Conservation     Open Access  
Indonesian Journal of Sustainability Accounting and Management     Open Access  
One Ecosystem     Open Access  
Revista de Direito e Sustentabilidade     Open Access  
Ambiens. Revista Iberoamericana Universitaria en Ambiente, Sociedad y Sustentabilidad     Open Access  
Revista Meio Ambiente e Sustentabilidade     Open Access  
Revista de Ciencias Ambientales     Open Access  
Recycling     Open Access  
Revista Memorare     Open Access  
Novos Cadernos NAEA     Open Access  
Julius-Kühn-Archiv     Open Access  
In Situ. Revue des patrimoines     Open Access  
Future Anterior     Full-text available via subscription  
Regional Sustainability     Open Access  
Interações (Campo Grande)     Open Access  

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Journal Cover
Soil Ecology Letters
Number of Followers: 0  
 
  Hybrid Journal Hybrid journal (It can contain Open Access articles)
ISSN (Print) 2662-2289 - ISSN (Online) 2662-2297
Published by Springer-Verlag Homepage  [2469 journals]
  • Effects of different fertilization practices on anammox activity,
           abundance, and community compositions in a paddy soil

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      Abstract: Abstract The return of crop residue and green manure into agricultural soil is known to be important agricultural management strategies, yet how they affect the anammox process remains poorly characterized. A field experiment containing four treatments: chemical fertilizer (F), F plus rice straw (FS), FS plus green manure (FSM), FSM with integrated management (FSMM), was performed to examine the effects of incorporation of rice straw and green manure residues on anammox. The results showed that the anammox activities in FS and FSM treatments (0.65 and 0.80 nmol N g−1 soil h−1, respectively) were significantly lower than those in F and FSMM treatments (1.60 and 1.28 nmol N g−1 soil h−1, respectively). Anammox contributed 4.07%–4.95% of total N loss in soil incorporated with residues, lower than soil treated with chemical fertilizer only (9.13%), the remaining being due to denitrification. However, the abundance of the hzsB gene (the hydrazine synthase β-subunit gene) in FS and FSM treatments (1.13 × 106 and 1.18 × 106 copies g−1 soil) were significantly higher than soil using chemical fertilizer only (7.49 × 105 copies g−1 soil) while showed no significant difference with FSMM treatment (8.81 × 105 copies g−1 soil). Illumina sequencing indicated that Brocadia was the dominant anammox genus, following by Scalindua and Kuenenia. Anammox bacterial diversity was altered after 4-year incorporation of rice straw and green manure, as shown by α-diversity indices. We concluded that rice straw and green manure incorporated with mineral fertilizer reduce N removal from paddy soil in terms of anammox in spite of stimulating anammox bacterial growth.
      PubDate: 2022-09-01
      DOI: 10.1007/s42832-021-0103-5
       
  • Immediate and long-term effects of invasive plant species on soil
           characteristics

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      Abstract: Abstract Invasive plant species may alter soil characteristics or interact with the soil microbial community resulting in a competitive advantage. Our objectives were to determine: i) if invasive plant species alter soil properties; and ii) the long-term effects of invasive plant species on soil properties and subsequent implications on ecological restoration efforts. We focused on Lespedeza cuneata, a plant that may be allelopathic. Soil samples were collected from four locations in Central Missouri, USA: an old-field with abundant L. cuneata, two reconstructed sites, and a remnant prairie that has never been plowed. Soil health indictors were used to characterize soil properties at these sites. Nearly every soil property differed significantly between the unplowed prairie reference site and the other three sites. The reconstructed sites, however, generally did not differ from the invaded old-field. These results indicate that the reconstructed prairies are not fully recovered. Although above-ground traits, such as the plant community structure, appear similar to the prairie, the soil microbial community structure still resembles that of an invaded old-field site. These results indicate that more time may be needed before soil microbial populations fully recover after invasive plant removal.
      PubDate: 2022-09-01
      DOI: 10.1007/s42832-021-0104-4
       
  • Assessment of microbial α-diversity in one meter squared topsoil

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      Abstract: Abstract Due to the tremendous diversity of microbial organisms in topsoil, the estimation of saturated richness in a belowground ecosystem is still challenging. Here, we intensively surveyed the 16S rRNA gene in four 1 m2 sampling quadrats in a typical grassland, with 141 biological or technical replicates generating over 11 million sequences per quadrat. Through these massive data sets and using both non-asymptotic extrapolation and non-parametric asymptotic approaches, results revealed that roughly 15 919±193, 27 193±1076 and 56 985±2347 prokaryotic species inhabited in 1 m2 topsoil, classifying by DADA2, UPARSE (97% cutoff) and Deblur, respectively, and suggested a huge difference among these clustering tools. Nearly 500 000 sequences were required to catch 50% species in 1 m2, while any estimator based on 500 000 sequences would still lose about a third of total richness. Insufficient sequencing depth will greatly underestimate both observed and estimated richness. At least ∼911 000, ∼3461 000, and ∼1 878 000 sequences were needed for DADA2, UPARSE, and Deblur, respectively, to catch 80% species in 1 m2 topsoil, and the numbers of sequences would be nearly twice to three times on this basis to cover 90% richness. In contrast, α-diversity indexes characterized by higher order of Hill numbers, including Shannon entropy and inverse Simpson index, reached saturation with fewer than 100 000 sequences, suggesting sequencing depth could be varied greatly when focusing on exploring different α-diversity characteristics of a microbial community. Our findings were fundamental for microbial studies that provided benchmarks for the extending surveys in large scales of terrestrial ecosystems.
      PubDate: 2022-09-01
      DOI: 10.1007/s42832-021-0111-5
       
  • Compatible package-based agriculture systems: an urgent need for
           agro-ecological balance and climate change adaptation

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      Abstract: Abstract Besides contributing majorly in the growth of a country, agriculture is one of the severely affected sectors at present. Several modifications and adaptations are being made in agricultural practices to cope-up with the declining soil fertility and changing climate scenarios across the world. However, the development and adoption of a single agricultural practice may not help in the holistic mitigation of the impacts of climate change and may result in economic vulnerability to farmers. Therefore, it is high time to develop and recommend a group of agricultural practices i.e., package-based agriculture system having some compatibility for one another in the long term. In this article, a viewpoint has been given on some emergent agronomic practices adopted in the tropical agro-ecosystems which have potential to be developed as compatible agricultural package in combination. Moreover, we also emphasized on exploring some key indicators/environmental factors to assess the compatibility of different agronomic practices. For identifying the research transition from single to combined agricultural practices, a bibliometric analysis was performed by using conservation agriculture (CA), the system of rice intensification (SRI), organic agriculture and soil (biochar) amendment as the major agronomic practices being used for improving agro-ecological services such as improving nutrient cycling, soil fertility and crop productivity as well as climate change mitigation. The results revealed that scientific communities are now paying attention to exploring the role of combined agricultural practices for agro-ecological balance and climate change adaptation. Moreover, the limitations of the adoption of agronomic packages under different agro-climatic zones have also been highlighted. The recommendations of the study would further help the environmental decision-makers to develop potential measures for climate change mitigation without compromising the agro-ecological balance.
      PubDate: 2022-09-01
      DOI: 10.1007/s42832-021-0087-1
       
  • Effect and mechanism of changes in physical structure and chemical
           composition of new biochar on Cu(II) adsorption in an aqueous solution

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      Abstract: Abstract To improve the adsorption effect of biochar on heavy metal Cu(II), we prepared new biochar and explored its modification process influence on original biochar’s physical structure and chemical composition as well as its adsorption mechanism for Cu(II) in an aqueous solution. Through research work, we have reached some significant conclusions: (1) The modified biochar (M2–800) can adsorb Cu(II) at the rate of 98.039 mg g−1, 38.8 times higher than that of the original biochar C800 (2.525 mg g−1); (2) The biochar modification process boosts its etching and pore expansion, helping Cu(II) enter the inner surface of the adsorbent, but chemical adsorption is still the most essential fixation method for Cu(II); (3) The alkaline modification process promotes the formation of oxygen-containing functional groups, in which −OH/−COOH and iron ions would form C-O-Fe structures such as hydroxyl bridges (Fe-O−) and carboxy bridges (Fe-OOC−); (4) Carboxyl is the primary site of Cu(II) fixation in M2–800, and M2–800 has higher electronegativity (−47.8 mV) and larger pH (11.61), so that Cu(II) can be removed by electrostatic attraction and precipitation.
      PubDate: 2022-09-01
      DOI: 10.1007/s42832-021-0102-6
       
  • Use of ciliate communities for monitoring ecological restoration of grain
           for the green in north-western China

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      Abstract: Abstract A 1-year baseline survey was conducted in north-western China to evaluate the ecological restoration quality of grain for green (GFG) using soil ciliate communities. The aims of this study were focused on analyzing the changes of soil ciliate communities in four plots (A, GFG for 15 years; B, GFG for 13 years; C, layland; D, cultivated land) for GFG environmental assessment. Simultaneously we studied the effects of vegetation communities and physical-chemical variables with GFG changes on soil ciliates. A total of 114 species of ciliates were identified among the four sample sites, representing 9 classes, 14 orders, 22 families and 37 genera. The community patterns of the soil ciliates were significantly correlated with the individual abundance of aboveground plants, soil water content, and soil porosity. The contents of total nitrogen were the main factor affecting the soil ciliate community composition. The species number, individual abundance, and diversity index of the ciliates were each in the order A>B>C>D; that is, the community composition of ciliates was complicated with the implementation of the GFG. It was shown that the succession of ciliate community shifts toward promoting the complexity with the progress of GFG. These findings demonstrate that soil ciliate communities may be used as a useful indicator to evaluate the effects of the ecological restoration quality of GFG.
      PubDate: 2022-09-01
      DOI: 10.1007/s42832-021-0105-3
       
  • Zooming in to acquire micro-reaction: Application of microfluidics on soil
           microbiome

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      Abstract: Abstract Microfluidics confers unique advantages in microbiological studies as these devices can accurately replicate the micro- and even nano-scale structures of soil to simulate the habitats of bacteria. It not only helps us understand the spatial distribution of bacterial communities (such as biofilms), but also provides mechanistic insights into microbial behaviors including chemotaxis and horizontal gene transfer (HGT). Microfluidics provides a feasible means for real-time, in situ studies and enables in-depth exploration of the mechanisms of interactions in the soil microbiome. This review aims to introduce the basic principles of microfluidic technology and summarize the recent progress in microfluidic devices to study bacterial spatial distribution and functions, as well as biological processes, such bacterial chemotaxis, biofilm streamers (BS), quorum sensing (QS), and HGT. The challenges in and future development of microfluidics for soil microbiological studies are also discussed.
      PubDate: 2022-09-01
      DOI: 10.1007/s42832-021-0073-7
       
  • Umamification of food facilitates the green transition

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      PubDate: 2022-08-21
       
  • Database and primer selections affect nematode community composition under
           different vegetations of Changbai Mountain

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      Abstract: Abstract High-throughput sequencing technology is increasingly used in the study of nematode biodiversity. However, the annotation difference of commonly used primers and reference databases on nematode community is still unclear. We compared two pairs of primers (3NDf/C_1132rmod, NF1F/18Sr2bR) and three databases (NT_v20200604, SILVA138/18s Eukaryota and PR2_v4.5 databases) on the determination of nematode community from four different vegetation types in Changbai Mountain, including mixed broadleaf-conifer forest, dark coniferous forest, betula ermanii Cham and alpine tundra. Our results showed that the selection of different primers and databases influenced the annotation of nematode taxa, but the diversity of nematode community showed consistent pattern among different vegetation types. Our findings emphasize that it is necessary to select appropriate primer and database according to the target taxonomic level. The difference in primers will affect the result of nematode taxa at different classification levels, so sequencing analysis cannot be used for comparison with studies using different primers. In terms of annotation effect in this study, 3NDf/C_1132rmod primers with NT_v20200604 database could provide more information than other combinations at the genus or species levels.
      PubDate: 2022-07-26
       
  • Coming of age for the rhizosphere microbiome transplantation

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      Abstract: Abstract Microbiome transplants have the potential to disrupt agriculture and medicine by transferring the microbial genetic pool (and hence capabilities) from one host to another. Yet, for this technology to become reality, we need to understand the drivers shaping the success of microbiome transplant. We highlight here recent findings by Dr. Gaofei Jiang and colleagues. Using disease suppression as a model function, they highlight the microbiome characteristics making a successful transplant possible. We see this study is a seminal work making microbiome transplant an informed process that will replace the current error-prone trial procedures. We anticipate that the insights may catalyse a paradigm shift in microbiome management in agriculture and medicine.
      PubDate: 2022-07-07
      DOI: 10.1007/s42832-022-0151-5
       
  • Soil microbes-mediated enzymes promoted the secondary succession in
           post-mining plantations on the Loess Plateau, China

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      Abstract: Abstract The diversity of vegetation configuration is the key to ecological restoration in open-pit coal mine dump. However, the recovery outcomes of different areas with the same vegetation assemblage pattern are completely different after long-term evolution. Therefore, understanding the causes of differential vegetation recovery and the mechanism of plant succession is of great significance to the ecological restoration of mines. Three Pinus tabulaeformis plantations with similar initial site conditions and restoration measures but with different secondary succession processes were selected from the open-pit coal mine dump that has been restored for 30 years. Soil physicochemical properties, enzyme activities, vegetation and microbial features were investigated, while the structural equation models were established to explore the interactions between plants, soil and microbes. The results showed that original vegetation configuration and soil nutrient conditions were altered due to secondary succession. With the advancement of the secondary succession process, the coverage of plants increased from 34.8% to 95.5% (P < 0.05), soil organic matter increased from 9.30 g kg−1 to 21.13 g kg−1 (P < 0.05), and total nitrogen increased from 0.38 g kg−1 to 1.01 g kg−1 (P < 0.05). The activities of soil urease and β-glucosidase were increased by 1.7-fold and 53.26%, respectively. Besides, the secondary succession also changed the soil microbial community structure and function. The relative abundance of Nitrospira genus which dominates the nitrification increased 5.2-fold. The results showed that urease and β-glucosidase promoted the increase of vegetation diversity and biomass by promoting the accumulation of soil organic matter and nitrate nitrogen, which promoted the ecological restoration of mine dumps.
      PubDate: 2022-07-07
      DOI: 10.1007/s42832-022-0148-0
       
  • Plant-based diet: “Cook up” the sustainable future

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      PubDate: 2022-07-01
      DOI: 10.1007/s42832-022-0150-6
       
  • No tillage outperforms conventional tillage under arid conditions and
           following fertilization

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      Abstract: Abstract Reduced tillage practices present a tool that could sustainably intensify agriculture. The existing literature, however, lacks a consensus on how and when reduced tillage practices should get implemented. We reanalyzed here an extensive dataset comparing how regular tillage practices (i.e., conventional tillage) impacted yield of eight crops compared to stopping tillage altogether (i.e., no-tillage practice). We observed that aridity and fertilization favored no tillage over conventional tillage whereas conventional tillage performed better under high fertility settings. We further show that the responses are consistent across the crops. Our reanalysis complements the original and fills a gap in the literature questioning the conditions under which reducing tillage presents a viable alternative to common tillage practices.
      PubDate: 2022-07-01
      DOI: 10.1007/s42832-022-0145-3
       
  • Global-scale analysis reveals distinct patterns of non-ribosomal peptide
           and polyketide synthase encoding genes in root and soil bacterial
           communities

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      Abstract: Abstract Secondary metabolites (SMs) produced by soil bacteria, for instance antimicrobials and siderophores, play a vital role in bacterial adaptation to soil and root ecosystems and can contribute to plant health. Many SMs are non-ribosomal peptides and polyketides, assembled by non-ribosomal peptides synthetase (NRPS) and polyketide synthase (PKS) and encoded by biosynthetic gene clusters (BGCs). Despite their ecological importance, little is known about the occurrence and diversity of NRPs and PKs in soil. We extracted NRPS- and PKS-encoding BGCs from 20 publicly available soil and root-associated metagenomes and annotated them using antiSMASH-DB. We found that the overall abundance of NRPSs and PKSs is similar in both environments, however NRPSs and PKSs were significantly clustered between soil and root samples. Moreover, the majority of identified sequences were unique to either soil- or root-associated datasets and had low identity to known BGCs, suggesting their novelty. Overall, this study illuminates the huge untapped diversity of predicted SMs in soil and root microbiomes, and indicates presence of specific SMs, which may play a role in inter- and intra-bacterial interactions in root ecosystems.
      PubDate: 2022-07-01
      DOI: 10.1007/s42832-022-0146-2
       
  • Effects of perfluoroalkyl and polyfluoroalkyl substances (PFAS) on soil
           structure and function

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      Abstract: Abstract Soils are impacted globally by several anthropogenic factors, including chemical pollutants. Among those, perfluoroalkyl and polyfluoroalkyl substances (PFAS) are of concern due to their high environmental persistence, and as they might affect soil structure and function. However, data on impacts of PFAS on soil structure and microbially-driven processes are currently lacking. This study explored the effects of perfluorooctanesulfonic acid (PFOS), perfluorooctanoic acid (PFOA) and perfluorobutanesulfonic acid (PFBS) at environmental-relevant concentrations on soil health, using a 6-week microcosm experiment. PFAS (even at 0.5 ng g−1 for PFBS) significantly increased litter decomposition, associated with positive effects on β-glucosidase activities. This effect increased with PFAS concentrations. Soil pH was significantly increased, likely as a direct consequence of increased litter decomposition affected by PFAS. Soil respiration was significantly inhibited by PFAS in week 3, while this effect was more variable in week 6. Water-stable aggregates were negatively affected by PFOS, possibly related to microbial shifts. PFAS affected soil bacterial and fungal abundance, but not microbial and certain enzyme activities. Our work highlights the potential effects of PFAS on soil health, and we argue that this substance class could be a factor of environmental change of potentially broad relevance in terrestrial ecosystem functioning.
      PubDate: 2022-06-14
      DOI: 10.1007/s42832-022-0143-5
       
  • Continuous cropping of alfalfa (Medicago sativa L.) reduces bacterial
           diversity and simplifies cooccurrence networks in aeolian sandy soil

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      Abstract: Abstract Alfalfa is a perennial herbaceous forage legume that is remarkably and negatively affected by monocropping. However, the contribution of the changes in bacterial communities to soil sickness in alfalfa have not been elucidated. Therefore, we investigated bacterial community structures in response to monocropped alfalfa along the chronosequence. Continuous cropping remarkably reduced bacterial alpha diversity and altered community structures, and soil pH, total P and available P were strongly associated with the changes of bacterial diversity and community structures. Intriguingly, 10 years of monocropped alfalfa might be a demarcation point separating soil bacterial community structures into two obvious groups that containing soil samples collected in less and more than 10 years. The relative abundances of copiotrophic bacteria of Actinobacteria and Gammaproteobacteria significantly increased with the extension of continuous cropping years, while the oligotrophic bacteria of Armatimonadetes, Chloroflexi, Firmicutes and Gemmatimonadetes showed the opposite changing patterns. Among those altered phyla, Actinobacteria, Chloroflexi, Alphaproteobacteria and Acidobacteria were the most important bacteria which contributed 50.86% of the community variations. Additionally, the relative abundances of nitrogen fixation bacteria of Bradyrhizobium and Mesorhizobium obviously increased with continuous cropping years, while the abundances of Arthrobacter, Bacillus, Burkholderiaceae and Microbacterium with potential functions of solubilizing phosphorus and potassium remarkably decreased after long-term continuous cropping. Furthermore, bacterial cooccurrence patterns were significantly influenced by continuous cropping years, with long-term monocropped alfalfa simplifying the complexity of the cooccurrence networks. These findings enhanced our understandings and provided references for forecasting how soil bacterial communities responds to monocropped alfalfa.
      PubDate: 2022-06-01
      DOI: 10.1007/s42832-021-0083-5
       
  • Rhizosphere bacteria degrade auxin to promote root growth

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      PubDate: 2022-06-01
      DOI: 10.1007/s42832-021-0090-6
       
  • The rhizosphere effect on soil gross nitrogen mineralization: A
           meta-analysis

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      Abstract: Abstract Rhizosphere effects play crucial roles in determining soil carbon (C) and nitrogen (N) cycling. However, the rhizosphere effect on soil gross nitrogen (N) mineralization (Nmin) has not been quantitatively assessed on the global scale. Here we performed a meta-analysis of compiled data from 24 publications and 37 species to synthesize the rhizosphere effect on soil gross Nmin and its influencing factors. We found that the rhizosphere effect significantly enhanced soil gross Nmin by 81% on average. Such rhizosphere effect was significantly higher in woody species than in nonwoody species, and higher in ECM (ectomycorrhizal) associated species than in AM (arbuscular mycorrhizal) associated species. Moreover, the variations of the rhizosphere effect on soil gross Nmin were correlated with those on soil C mineralization, phenol oxidase activity and root biomass rather than with other plant (growth form and mycorrhizal association) and climatic (mean annual temperature and precipitation) factors. These results support the ‘microbial activation’ and ‘microbial N mining’ hypotheses of rhizosphere effects and indicate the coupling of soil C and gross N mineralization in the rhizosphere. Overall, these findings provide novel insights into the rhizosphere effect on soil gross Nmin among plant growth forms and mycorrhizal associations, and improve our mechanistic understanding of soil N dynamics in the rhizosphere.
      PubDate: 2022-06-01
      DOI: 10.1007/s42832-021-0098-y
       
  • Research trends of microplastics in the soil environment: Comprehensive
           screening of effects

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      Abstract: Abstract We collated and synthesized previous studies that reported the impacts of microplastics on soil parameters. The data were classified and integrated to screen for the proportion of significant effects, then we suggest several directions to alleviate the current data limitation in future experiments. We compiled 106 datasets capturing significant effects, which were analyzed in detail. We found that polyethylene and pellets (or powders) were the most frequently used microplastic composition and shape for soil experiments. The significant effects mainly occurred in broad size ranges (0.1–1 mm) at test concentrations of 0.1%–10% based on soil dry weight. Polyvinyl chloride and film induced significant effects at lower concentrations compared to other compositions and shapes, respectively. We adopted a species sensitivity distribution (SSD) and soil property effect distribution (SPED) method using available data from soil biota, and for soil properties and enzymes deemed relevant for microplastic management. The predicted-no-effect-concentration (PNEC)-like values needed to protect 95% of soil biota and soil properties was estimated to be between 520 and 655 mg kg−1. This study was the first to screen microplastic levels with a view toward protecting the soil system. Our results should be regularly updated (e.g., quarterly) with additional data as they become available.
      PubDate: 2022-06-01
      DOI: 10.1007/s42832-021-0077-3
       
  • Fungi dominate denitrification when Chinese milk vetch green manure is
           used in paddy soil

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      Abstract: Abstract Fungi play an important role in soil nitrous oxide (N2O) emission in many agricultural soil systems. However, the effect of fungi on N2O emission in Chinese milk vetch (CMV)-containing soils has not been examined sufficiently. This study investigated the contribution of bacteria and fungi to soil N2O emission in CMV-amended soils. We compared soils from an experimental field in the Fujian Academy of Agricultural Sciences that had been treated with 30 000 kg of CMV per 667 m2 per year with one that was not treated with CMV. We incubated soil using cycloheximide and streptomycin to differentiate fungal and bacterial N2O emissions, respectively. Quantitative PCR (qPCR) was performed to investigate bacterial and fungal abundances in the two agricultural soil ecosystems. The contribution of fungi to soil N2O emission in CMV-amended soils was greater than that in non-CMV-amended paddy soils, with fungi accounting for more than 56% of the emissions in CMV-amended soils. Quantitative PCR showed that the ratio of the internal transcribed spacer to 16S rDNA was significantly higher in CMV-amended soils than in non-CMV-amended paddy soils. Furthermore, soil properties, such as pH (P<0.05) and NH4+ concentration (P<0.05), significantly and negatively affected N2O emission by fungi in soil, whereas the total organic carbon (P<0.05) and NO3− concentration (P<0.05) showed significant positive effects. Fungi may be important contributors to N2O production in CMV-amended soils, which may create challenges for mitigating N2O production.
      PubDate: 2022-06-01
      DOI: 10.1007/s42832-020-0064-0
       
 
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