G2TT
来源类型Articles
规范类型论文
DOI10.1371/journal.pone.0104818
ISSN1932-6203
How does conversion of natural tropical rainforest ecosystems affect soil bacterial and fungal communities in the Nile river watershed of Uganda?
Watson, R.; Nakicenovic, N.; Rosenthal, E.; Goldenberg, J.; Srivastava, L.; Jiang, K.; Messner, D.; Calverley, D.; Murdiyarso, D.; Griggs, D.; Ürge-Vorsatz, D.; Arent, D.; Zusman, E.; Sealy, H.; Nafo, H.A.; Rehman, I.H.; Inventor, J.; Koakutsu, K.; Tamura, K.; Verchot, L.V.; Grobmyer, M.; Amann, M.; Walsh, M.P.; Sano, N.; Williams, R.; Pachauri, S.; Kartha, S.; Sawyer, S.; Mpanu-Mpanu, T.; Li, Z.
发表日期2014
出处PLoS ONE 9(8): e104818
出版年2014
语种英语
摘要

Uganda’s forests are globally important for their conservation values but are under pressure from increasing human population and consumption. In this study, we examine how conversion of natural forest affects soil bacterial and fungal communities. Comparisons in paired natural forest and human-converted sites among four locations indicated that natural forest soils consistently had higher pH, organic carbon, nitrogen, and calcium, although variation among sites was large. Despite these differences, no effect on the diversity of dominant taxa for either bacterial or fungal communities was detected, using polymerase chain reaction-denaturing gradient gel electrophoresis (PCR-DGGE). Composition of fungal communities did generally appear different in converted sites, but surprisingly, we did not observe a consistent pattern among sites. The spatial distribution of some taxa and community composition was associated with soil pH, organic carbon, phosphorus and sodium, suggesting that changes in soil communities were nuanced and require more robust metagenomic methods to understand the various components of the community. Given the close geographic proximity of the paired sampling sites, the similarity between natural and converted sites might be due to continued dispersal between treatments. Fungal communities showed greater environmental differentiation than bacterial communities, particularly according to soil pH. We detected biotic homogenization in converted ecosystems and substantial contribution of ß-diversity to total diversity, indicating considerable geographic structure in soil biota in these forest communities. Overall, our results suggest that soil microbial communities are relatively resilient to forest conversion and despite a substantial and consistent change in the soil environment, the effects of conversion differed widely among sites. The substantial difference in soil chemistry, with generally lower nutrient quantity in converted sites, does bring into question, how long this resilience will last.

主题conservation ; population density ; population growth
区域Uganda
URLhttps://www.cifor.org/library/4933/
来源智库Center for International Forestry Research (Indonesia)
引用统计
资源类型智库出版物
条目标识符http://119.78.100.153/handle/2XGU8XDN/92702
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GB/T 7714
Watson, R.,Nakicenovic, N.,Rosenthal, E.,et al. How does conversion of natural tropical rainforest ecosystems affect soil bacterial and fungal communities in the Nile river watershed of Uganda?. 2014.
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