التفاصيل البيبلوغرافية
| العنوان: |
Increased Peatland Nutrient Availability Following the Fort McMurray Horse River Wildfire |
| المؤلفون: |
Christine van Beest, Richard Petrone, Felix Nwaishi, James Michael Waddington, Merrin Macrae |
| المصدر: |
Diversity, Vol 11, Iss 9, p 142 (2019) |
| بيانات النشر: |
MDPI AG, 2019. |
| سنة النشر: |
2019 |
| المجموعة: |
LCC:Biology (General) |
| مصطلحات موضوعية: |
wildfire, peatland, nitrogen, phosphorus, nutrients, Biology (General), QH301-705.5 |
| الوصف: |
Northern peatlands are experiencing increased wildfire disturbance, threatening peatland biogeochemical function and ability to remain major stores of carbon (C) and macronutrients (nitrogen—N, and phosphorus—P). The impacts of climate change-driven drying on peatland nutrient dynamics have been explored previously; however, the impacts of wildfire on nutrient dynamics have not been examined when comparing burned and unburned areas in a post-fire fen. This study assessed the impact of wildfire on N and P bioavailability, change in CNP stoichiometric balance and feedback on plant nutrient limitation patterns in a fen peatland, one-year post-wildfire, by comparing Burned and Unburned areas. Water extractable P increased up to 200 times in shallow leachate, 125 times in groundwater and 5 times in peat. Surface ash leachate had increased concentrations in Ammonium (NH4+) and Nitrate (NO3−), and through groundwater mobility, increased extractable N concentrations were observed in peat throughout the entire fen. The net mineralization of N and P were minimal at the Burned areas relative to Unburned areas. Fire affected plant nutrient limitation patterns, switching from dominantly N-limited to NP co-limited and P-limitation in moss and vascular species respectively. The top 20 cm of the Burned area C concentrations was higher relative to the Unburned area, with increased CN and CP ratios also being found in the Burned area. These findings suggest that the long-term effects of elevated C, N, and P concentrations on plant productivity and decomposition must be re-evaluated for fire disturbance to understand the resiliency of peatland biogeochemistry post-wildfire. |
| نوع الوثيقة: |
article |
| وصف الملف: |
electronic resource |
| اللغة: |
English |
| تدمد: |
1424-2818 |
| Relation: |
https://www.mdpi.com/1424-2818/11/9/142; https://doaj.org/toc/1424-2818 |
| DOI: |
10.3390/d11090142 |
| URL الوصول: |
https://doaj.org/article/76a2e85b83ef4228837ed477711c6939 |
| رقم الانضمام: |
edsdoj.76a2e85b83ef4228837ed477711c6939 |
| قاعدة البيانات: |
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