| Autor: |
Maximilian Barczok, Chelsea Smith, Nicolle Di Domenico, Lauren Kinsman-Costello, Elizabeth Herndon |
| Jazyk: |
angličtina |
| Rok vydání: |
2023 |
| Předmět: |
|
| Zdroj: |
Frontiers in Environmental Science, Vol 11 (2023) |
| Druh dokumentu: |
article |
| ISSN: |
2296-665X |
| DOI: |
10.3389/fenvs.2023.1114814 |
| Popis: |
Vernal ponds are ephemeral landscape features that experience intermittent flooding and drying, leading to variable saturation in underlying soils. Redox potential (Eh) is an important indicator of biogeochemical processes that changes in response to these hydrological shifts; however, high-resolution measurements of Eh in variably inundated environments remain sparse. In this study, the responses of soil Eh to ponding, drying, and rewetting of a vernal pond were investigated over a 5-month period from late spring through early autumn. Soil Eh was measured at 10-min frequencies and at multiple soil depths (2–48 cm below the soil surface) in shallow and deep sections within the seasonally ponded lowland and in unsaturated soils of the surrounding upland. Over the study period, average Eh in surface soils (0–8 cm) was oxidizing in the upland (753 ± 79 mV) but relatively reducing in the shallow lowland (369 ± 49 mV) and deep lowland (198 ± 37 mV). Reducing conditions (Eh |
| Databáze: |
Directory of Open Access Journals |
| Externí odkaz: |
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