Next Article in Journal
Environmental Conflicts Related to Urban Expansion Involving Agrarian Communities in Central Mexico
Previous Article in Journal
Identification of Urban Functional Regions Based on Floating Car Track Data and POI Data
Open AccessArticle

The Role of Different Earthworm Species (Metaphire Hilgendorfi and Eisenia Fetida) on CO2 Emissions and Microbial Biomass during Barley Decomposition

1
Graduate School of Agriculture, Hokkaido University, Sapporo Hokkaido 060-8589, Japan
2
Research Faculty of Agriculture, Hokkaido University, Sapporo Hokkaido 060-8589, Japan
*
Author to whom correspondence should be addressed.
Sustainability 2019, 11(23), 6544; https://doi.org/10.3390/su11236544
Received: 17 October 2019 / Revised: 16 November 2019 / Accepted: 18 November 2019 / Published: 20 November 2019
(This article belongs to the Section Sustainable Agriculture)
Earthworms are commonly known as essential modifiers of soil carbon (C) and nitrogen (N) cycles, but the effects of their species on nutrient cycles and interaction with soil microbial activities during the decomposition of organic materials remain unclear. We conducted an incubation experiment to investigate the effect of two different epigeic earthworms (M. hilgendorfi and E. fetida) on C and N concentrations and related enzyme activities in agricultural soils with added barley residues (ground barley powder). To achieve this, four treatments were included; (1) M. hilgendorfi and barley, (2) E. fetida and barley, (3) barley without earthworms, and (4) without earthworms and without barley. After 32 days incubation, we measured soil pH, inorganic N, microbial biomass C (MBC), water or hot-water soluble C, and soil enzyme activities. We also measured CO2 emissions during the incubation. Our results indicated the earthworm activity in soils had no effect on the cumulative CO2 emissions. However, M. hilgendorfi had a potential to accumulate MBC (2.9 g kg−1 soil) and nitrate-N (39 mg kg−1 soil), compared to E. fetida (2.5 g kg−1 soil and 14 mg kg−1 soil, respectively). In conclusion, the interaction between soil microbes and earthworm is influenced by earthworm species, consequently influencing the soil C and N dynamics. View Full-Text
Keywords: epigeic earthworm; soil carbon; soil nitrogen; soil enzyme activity; agricultural soil epigeic earthworm; soil carbon; soil nitrogen; soil enzyme activity; agricultural soil
Show Figures

Figure 1

MDPI and ACS Style

Hamamoto, T.; Uchida, Y. The Role of Different Earthworm Species (Metaphire Hilgendorfi and Eisenia Fetida) on CO2 Emissions and Microbial Biomass during Barley Decomposition. Sustainability 2019, 11, 6544.

Show more citation formats Show less citations formats
Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.

Article Access Map by Country/Region

1
Search more from Scilit
 
Search
Back to TopTop