scholarly journals Soil and Nutrient Cycling Responses in Riparian Forests to the Loss of Ash (Fraxinus spp. L) from Emerald Ash Borer (Agrilus planipennis, Fairmaire)

Forests ◽  
2020 ◽  
Vol 11 (5) ◽  
pp. 489
Author(s):  
Paul K. Sibley ◽  
David Dutkiewicz ◽  
David P. Kreutzweiser ◽  
Paul Hazlett
Keyword(s):  
Nutrient Cycling ◽  
Riparian Forest ◽  
Emerald Ash Borer ◽  
Soil Nutrient ◽  
The United States ◽  
Canopy Gaps ◽  
Riparian Forests ◽  
Ground Vegetation ◽  
Significant Difference ◽  
Soil Nutrient Cycling

Emerald ash borer (EAB) is an alien invasive species that is spreading across Canada and the United States killing ash trees. In riparian forests where ash may be abundant; loss of ash can induce significant structural changes; including the creation of canopy gaps; changes in light penetration; expansion of ground vegetation; and alteration of soil nitrogen and carbon cycling. In 2014 and 2015, we examined the effects of EAB-caused gaps in riparian forests on soil nutrient dynamics. Two sites with different infestation timelines, a “new” site (mortality in past 2–3 years) and an “old” site (infested 10 years previous) were selected to determine temporal differences in effects of canopy gaps created by ash loss on litterfall, herbaceous ground vegetation, and soil nutrient cycling. Within both sites, plots with clustered dead ash (canopy gap plots—CG) were paired with nearby plots of full canopy and no ash (canopy closed plots—CC), and differences between paired plots determined. Total litterfall was observed at all sites but was only significant at the new infestation site. Reductions in leaf litter deposition in CG plots resulted in reduced N and C flux to the forest floor but soil C and N concentrations, and nitrogen mineralization rates, were not significantly different between CG and CC plots. Nitrate concentration in soil solution was significantly greater in CG plots compared to CC plots at the new infestation sites but showed the opposite trend at the old infestation sites. Herbaceous ground vegetation biomass was significantly greater (up to 10×) in CG plots than in CC plots. Overall, despite changes to riparian forest canopy structure and litterfall, there was no significant difference in soil nutrient cycling between EAB-induced canopy gaps and closed canopy plots after 10 years, suggesting a high resilience of riparian forest soils to EAB infestation

Interactions between plant growth and soil nutrient cycling under elevated CO2 : a meta-analysis

2006 ◽  
Vol 12 (11) ◽  
pp. 2077-2091 ◽  
Author(s):  
MARIE-ANNE De GRAAFF ◽  
KEES-JAN Van GROENIGEN ◽  
JOHAN SIX ◽  
BRUCE HUNGATE ◽  
CHRIS Van KESSEL
Keyword(s):  
Plant Growth ◽  
Nutrient Cycling ◽  
Elevated Co2 ◽  
Meta Analysis ◽  
Soil Nutrient ◽  
Soil Nutrient Cycling

scholarly journals Filtered mud improves sugarcane growth and modifies the functional abundance and structure of soil microbial populations

PeerJ ◽  
2022 ◽  
Vol 10 ◽  
pp. e12753
Author(s):  
Ahmad Yusuf Abubakar ◽  
Muhammed Mustapha Ibrahim ◽  
Caifang Zhang ◽  
Muhammad Tayyab ◽  
Nyumah Fallah ◽  
...  
Keyword(s):  
Nutrient Cycling ◽  
High Throughput ◽  
High Throughput Sequencing ◽  
Soil Nutrient ◽  
Clay Loam ◽  
Sugarcane Production ◽  
Bacterial Phyla ◽  
Soil Microbial ◽  
Soil Nutrient Cycling ◽  
Growth Properties

Background Exploring high-quality organic amendments has been a focus of sustainable agriculture. Filtered mud (FM), a sugar factory waste derived from sugarcane stems, could be an alternative organic amendment for sugarcane production. However, the effects of its application proportions on soil fertility, nutrient cycling, structure of soil bacterial and fungal communities, and the growth of sugarcane in clay-loam soils remain unexplored. Methods Three application proportions of FM: (FM1-(FM: Soil at 1:4), FM2-(FM: Soil at 2:3), and FM3-(FM: Soil at 3:2)) were evaluated on sugarcane growth and soil nutrient cycling. High throughput sequencing was also employed to explore soil microbial dynamics. Results We observed that FM generally increased the soil’s nutritional properties while improving NO3− retention compared to the control, resulting in increased growth parameters of sugarcane. Specifically, FM1 increased the concentration of NH4+−N, the N fraction preferably taken up by sugarcane, which was associated with an increase in the plant height, and more improved growth properties, among other treatments. An increase in the proportion of FM also increased the activity of soil nutrient cycling enzymes; urease, phosphatase, and β-glucosidase. High throughput sequencing revealed that FM reduced the diversity of soil bacteria while having insignificant effects on fungal diversity. Although increasing FM rates reduced the relative abundance of the phyla Proteobacteria, its class members, the Gammaproteobacteria and Betaproteobacteria containing some N-cycling related genera, were stimulated. Also, FM stimulated the abundance of beneficial and lignocellulose degrading organisms. These included the bacterial phyla Actinobacteria, Bacteroidetes, Acidobacteria, Chloroflexi, and the fungal phylum Ascomycota. The distribution of the soil microbial community under FM rates was regulated by the changes in soil pH and the availability of soil nutrients. Since FM1 showed more promise in improving the growth properties of sugarcane, it could be more economical and sustainable for sugarcane production in clay-loam soils.

Wood-feeding beetles and soil nutrient cycling in burned forests: implications of post-fire salvage logging

2010 ◽  
Vol 12 (1) ◽  
pp. 9-18 ◽  
Author(s):  
Tyler P. Cobb ◽  
Kirsten D. Hannam ◽  
Barbara E. Kishchuk ◽  
David W. Langor ◽  
Sylvie A. Quideau ◽  
...  
Keyword(s):  
Nutrient Cycling ◽  
Soil Nutrient ◽  
Salvage Logging ◽  
Soil Nutrient Cycling
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