open access

https://doi.org/10.14943/lowtemsci.80.483

https://hdl.handle.net/2115/84940

Emission of greenhouse gases influenced by Sika deer disturbance in Ozegahara mire

日本語

sika deer

2022-03-31

低温科学第80巻編集委員会

Low Temperature Science

80

483-489

Ozegahara mire is the largest alpine mire in Japan. The mire has been preserved as a precious peatland ecosystem with high ecological diversity. After the late 20th century, the mire has been exposed to ecosystem disturbance by mire flooding due to heavy rain as well as invasive Sika deer. This manuscript reviewed studies about greenhouse gas emission from wetland and report the effects of Sika deer disturbance on the soil physicochemical properties and the emission of carbon dioxide (CO2) and methane (CH4) from Ozegahara mire. Soil and gas samples were collected at fixed 14 fixed plots on 5 sites with and without mire disturbance by Sika deer in Naka-tashiro of Ozegahara mire through 5 months of 2019 (June to October), and determined their properties and gas composition each month. Groundwater level displayed similar seasonal change in two sites, being affected by precipitation. The concentrations of NH4+ nitrogen in the disturbed sites were higher than those in the undisturbed sites. Mechanical disturbance of the peat soils by deer resulted in mineralization of organic matter. CO2 and CH4 fluxes from the undisturbed sites were highest in August, and those were higher than those from the disturbed sites. Negative correlation was found between CO2 and groundwater level and also correlation between CH4 and groundwater level was negative, suggesting the importance of groundwater level in greenhouse gases flux, depending on the sites and also species of greenhouse gases.

紀要論文

Version of Record

1880-7593