scholarly journals Soil biodiversity and biogeochemical function in managed ecosystems

Soil Research ◽  
2020 ◽  
Vol 58 (1) ◽  
pp. 1 ◽  
Author(s):  
X. D. Chen ◽  
K. E. Dunfield ◽  
T. D. Fraser ◽  
S. A. Wakelin ◽  
A. E. Richardson ◽  
...  
Keyword(s):  
Land Use ◽  
Crop Production ◽  
Nutrient Dynamics ◽  
Forest Ecosystems ◽  
Molecular Techniques ◽  
Trophic Levels ◽  
Planted Forest ◽  
Soil Biodiversity ◽  
Managed Ecosystems ◽  
And Function

A complex combination of environmental, biological, chemical, and physical properties and processes determine soil biodiversity and its relationship to biogeochemical functions and ecosystem services. Vegetation, land-use, and land management, in turn, influence diversity and function in the soil ecosystem. The objective of this review was to assess how different land-use systems (crop production, animal production, and planted forest) affect soil biodiversity, and how consequent changes in soil biodiversity influence energy (carbon) and nutrient dynamics. Deficiencies in understanding relationships between soil biodiversity and biogeochemical function in managed ecosystems are highlighted, along with the need to investigate how diversity influences specific processes across different functional groups and trophic levels. The continued development and application of molecular techniques and data informatics with descriptive approaches will contribute to advancing our understanding of soil biodiversity and function in managed agricultural and forest ecosystems.

The main directions of scientific support for the implementation of the system of organic farming in Ukraine

2016 ◽  
Vol 1 (90) ◽  
pp. 22-24
Author(s):  
V.F. Kaminskyi ◽  
S.G. Korsun
Keyword(s):  
Land Use ◽  
Organic Farming ◽  
Crop Production ◽  
Land Ownership ◽  
Scientific Support ◽  
Speed Up ◽  
Organic Crop Production ◽  
Advanced Production ◽  
And Training ◽  
Organizational Issue

The aim of this work was to study the basic directions of scientific support introduction of organic farming in Ukraine. The study used methods of comparison, synthesis, analysis, induction and deduction. The article indicated on the main areas that need special attention from researchers and suggests one possible mechanism to remove the remaining obstacles to organizational issue introduction of scientific developments in the production of organic and training areas. This can speed up the creation of new and manage existing land ownership and land use organic farming with the introduction of advanced production technology of organic crop production.

Deferring Crisis

2018 ◽  
Author(s):  
Erin Stewart Mauldin
Keyword(s):  
Land Use ◽  
Environmental Impacts ◽  
Shifting Cultivation ◽  
Crop Production ◽  
Animal Husbandry ◽  
Antebellum South ◽  
Westward Expansion ◽  
The Cost ◽  
Land Use Practices ◽  
Ecological Regime

This chapter explores the ecological regime of slavery and the land-use practices employed by farmers across the antebellum South. Despite the diverse ecologies and crop regimes of the region, most southern farmers employed a set of extensive agricultural techniques that kept the cost of farming down and helped circumvent natural limits on crop production and stock-raising. The use of shifting cultivation, free-range animal husbandry, and slaves to perform erosion control masked the environmental impacts of farmers’ actions, at least temporarily. Debates over westward expansion during the sectional crisis of the 1850s were not just about the extension of slavery, they also reflected practical concerns regarding access to new lands and fresh soil. Both were necessary for the continued profitability of farming in the South.

scholarly journals Current and Future Pathotyping Platforms for Plasmodiophora brassicae in Canada

Plants ◽  
2021 ◽  
Vol 10 (7) ◽  
pp. 1446
Author(s):  
Heather H. Tso ◽  
Leonardo Galindo-González ◽  
Stephen E. Strelkov
Keyword(s):  
Crop Production ◽  
Plasmodiophora Brassicae ◽  
Cost Effective ◽  
Turnaround Time ◽  
Molecular Techniques ◽  
Differential Set ◽  
Management Plans ◽  
Increased Sensitivity ◽  
Phenotypic Methods ◽  
Important Disease

Clubroot, caused by Plasmodiophora brassicae, is one of the most detrimental threats to crucifers worldwide and has emerged as an important disease of canola (Brassica napus) in Canada. At present, pathotypes are distinguished phenotypically by their virulence patterns on host differential sets, including the systems of Williams, Somé et al., the European Clubroot Differential set, and most recently the Canadian Clubroot Differential set and the Sinitic Clubroot Differential set. Although these are frequently used because of their simplicity of application, they are time-consuming, labor-intensive, and can lack sensitivity. Early, preventative pathotype detection is imperative to maximize productivity and promote sustainable crop production. The decreased turnaround time and increased sensitivity and specificity of genotypic pathotyping will be valuable for the development of integrated clubroot management plans, and interest in molecular techniques to complement phenotypic methods is increasing. This review provides a synopsis of current and future molecular pathotyping platforms for P. brassicae and aims to provide information on techniques that may be most suitable for the development of rapid, reliable, and cost-effective pathotyping assays.

scholarly journals A Comparison of Approaches to Regional Land-Use Capability Analysis for Agricultural Land-Planning

Land ◽  
2021 ◽  
Vol 10 (5) ◽  
pp. 458
Author(s):  
Tara A. Ippolito ◽  
Jeffrey E. Herrick ◽  
Ekwe L. Dossa ◽  
Maman Garba ◽  
Mamadou Ouattara ◽  
...  
Keyword(s):  
Land Use ◽  
Land Use Planning ◽  
Crop Production ◽  
Agricultural Land ◽  
Arable Land ◽  
Agricultural Activity ◽  
Field Samples ◽  
Agricultural Potential ◽  
Fertility Data ◽  
Using Data

Smallholder agriculture is a major source of income and food for developing nations. With more frequent drought and increasing scarcity of arable land, more accurate land-use planning tools are needed to allocate land resources to support regional agricultural activity. To address this need, we created Land Capability Classification (LCC) system maps using data from two digital soil maps, which were compared with measurements from 1305 field sites in the Dosso region of Niger. Based on these, we developed 250 m gridded maps of LCC values across the region. Across the region, land is severely limited for agricultural use because of low available water-holding capacity (AWC) that limits dry season agricultural potential, especially without irrigation, and requires more frequent irrigation where supplemental water is available. If the AWC limitation is removed in the LCC algorithm (i.e., simulating the use of sufficient irrigation or a much higher and more evenly distributed rainfall), the dominant limitations become less severe and more spatially varied. Finally, we used additional soil fertility data from the field samples to illustrate the value of collecting contemporary data for dynamic soil properties that are critical for crop production, including soil organic carbon, phosphorus and nitrogen.

Land Use History Mediates Soil Biogeochemical Responses to Drought in Temperate Forest Ecosystems

Ecosystems ◽  
2021 ◽  
Author(s):  
Ernest D. Osburn ◽  
Julia S. Simpson ◽  
Brian D. Strahm ◽  
J. E. Barrett
Keyword(s):  
Land Use ◽  
Temperate Forest ◽  
Forest Ecosystems ◽  
Land Use History

scholarly journals Tree Diversity Reduces Fungal Endophyte Richness and Diversity in a Large-Scale Temperate Forest Experiment

Diversity ◽  
2019 ◽  
Vol 11 (12) ◽  
pp. 234 ◽  
Author(s):  
Eric A. Griffin ◽  
Joshua G. Harrison ◽  
Melissa K. McCormick ◽  
Karin T. Burghardt ◽  
John D. Parker
Keyword(s):  
Phylogenetic Diversity ◽  
Large Scale ◽  
High Throughput Sequencing ◽  
Spatial Scales ◽  
Fungal Endophytes ◽  
Fungal Endophyte ◽  
Tree Diversity ◽  
Trophic Levels ◽  
Community Diversity ◽  
And Function

Although decades of research have typically demonstrated a positive correlation between biodiversity of primary producers and associated trophic levels, the ecological drivers of this association are poorly understood. Recent evidence suggests that the plant microbiome, or the fungi and bacteria found on and inside plant hosts, may be cryptic yet important drivers of important processes, including primary production and trophic interactions. Here, using high-throughput sequencing, we characterized foliar fungal community diversity, composition, and function from 15 broadleaved tree species (N = 545) in a recently established, large-scale temperate tree diversity experiment using over 17,000 seedlings. Specifically, we tested whether increases in tree richness and phylogenetic diversity would increase fungal endophyte diversity (the “Diversity Begets Diversity” hypothesis), as well as alter community composition (the “Tree Diversity–Endophyte Community” hypothesis) and function (the “Tree Diversity–Endophyte Function” hypothesis) at different spatial scales. We demonstrated that increasing tree richness and phylogenetic diversity decreased fungal species and functional guild richness and diversity, including pathogens, saprotrophs, and parasites, within the first three years of a forest diversity experiment. These patterns were consistent at the neighborhood and tree plot scale. Our results suggest that fungal endophytes, unlike other trophic levels (e.g., herbivores as well as epiphytic bacteria), respond negatively to increasing plant diversity.

scholarly journals Impact of global climate change and fire on the occurrence and function of understorey legumes in forest ecosystems

2011 ◽  
Vol 12 (2) ◽  
pp. 150-160 ◽  
Author(s):  
Frédérique Reverchon ◽  
Zhihong Xu ◽  
Timothy J. Blumfield ◽  
Chengrong Chen ◽  
Kadum M. Abdullah
Keyword(s):  
Climate Change ◽  
Global Climate Change ◽  
Forest Ecosystems ◽  
Global Climate ◽  
And Function

scholarly journals Effects of Land-Use Change on Soil Functionality and Biodiversity: Toward Sustainable Planning of New Vineyards

Land ◽  
2021 ◽  
Vol 10 (4) ◽  
pp. 358
Author(s):  
Elena Gagnarli ◽  
Giuseppe Valboa ◽  
Nadia Vignozzi ◽  
Donatella Goggioli ◽  
Silvia Guidi ◽  
...  
Keyword(s):  
Land Use ◽  
Land Use Change ◽  
Soil Quality ◽  
Soil Biodiversity ◽  
Soil Microarthropods ◽  
Quick Recovery ◽  
Sustainable Planning ◽  
Soil Functionality ◽  
One Year ◽  
Soil Microarthropod

Sustainable agriculture largely depends on soil biodiversity and requires efficient methods to assess the effectiveness of agronomic planning. Knowledge of the landscape and relative pedosite is enriched by data on the soil microarthropod community, which represent useful bio-indicators for early soil-quality detection in land-use change (LUC). In the hilly Maremma region of Grosseto, Italy, two areas, a >10ys meadow converted into a vineyard and an old biodynamic vineyard (no-LUC), were selected for evaluating the LUC effect. For maintaining soil vitality and ecosystem services by meadow, the vineyard was planted and cultivated using criteria of the patented “Corino method”. The aim was to evaluate the LUC impact, within one year, by assessing parameters characterizing soil properties and soil microarthropod communities after the vineyard was planted. The adopted preservative method in the new vineyards did not show a detrimental impact on the biodiversity of soil microarthropods, and in particular, additional mulching contributed to a quick recovery from soil stress due to working the plantation. In the short term, the adopted agricultural context confirmed that the targeted objectives preserved the soil quality and functionality.

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