Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1111/gcb.13370 |
Similar temperature responses suggest future climate warming will not alter partitioning between denitrification and anammox in temperate marine sediments | |
Brin, Lindsay D.1; Giblin, Anne E.2; Rich, Jeremy J.3 | |
2017 | |
发表期刊 | GLOBAL CHANGE BIOLOGY
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ISSN | 1354-1013 |
EISSN | 1365-2486 |
出版年 | 2017 |
卷号 | 23期号:1 |
文章类型 | Article |
语种 | 英语 |
国家 | Canada; USA |
英文摘要 | Removal of biologically available nitrogen (N) by the microbially mediated processes denitrification and anaerobic ammonium oxidation (anammox) affects ecosystem N availability. Although few studies have examined temperature responses of denitrification and anammox, previous work suggests that denitrification could become more important than anammox in response to climate warming. To test this hypothesis, we determined whether temperature responses of denitrification and anammox differed in shelf and estuarine sediments from coastal Rhode Island over a seasonal cycle. The influence of temperature and organic C availability was further assessed in a 12-week laboratory microcosm experiment. Temperature responses, as characterized by thermal optima (T-opt) and apparent activation energy (E-a), were determined by measuring potential rates of denitrification and anammox at 31 discrete temperatures ranging from 3 to 59 degrees C. With a few exceptions, T-opt and E-a of denitrification and anammox did not differ in Rhode Island sediments over the seasonal cycle. In microcosm sediments, E-a was somewhat lower for anammox compared to denitrification across all treatments. However, T-opt did not differ between processes, and neither E-a nor T-opt changed with warming or carbon addition. Thus, the two processes behaved similarly in terms of temperature responses, and these responses were not influenced by warming. This led us to reject the hypothesis that anammox is more cold-adapted than denitrification in our study system. Overall, our study suggests that temperature responses of both processes can be accurately modeled for temperate regions in the future using a single set of parameters, which are likely not to change over the next century as a result of predicted climate warming. We further conclude that climate warming will not directly alter the partitioning of N flow through anammox and denitrification. |
英文关键词 | activation energy anammox climate change denitrification marine sediment temperature dependence |
领域 | 气候变化 ; 资源环境 |
收录类别 | SCI-E |
WOS记录号 | WOS:000390218300028 |
WOS关键词 | ANAEROBIC AMMONIUM OXIDATION ; SULFATE-REDUCING BACTERIA ; THERMAL-ACCLIMATION ; NITRATE REDUCTION ; METABOLIC BALANCE ; CHANGING CLIMATE ; NORTH-ATLANTIC ; CARBON-CYCLE ; RESPIRATION ; SOIL |
WOS类目 | Biodiversity Conservation ; Ecology ; Environmental Sciences |
WOS研究方向 | Biodiversity & Conservation ; Environmental Sciences & Ecology |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/17873 |
专题 | 气候变化 资源环境科学 |
作者单位 | 1.Univ New Brunswick, Canadian Rivers Inst, 100 Tucker Pk Rd, St John, NB E2L 4L5, Canada; 2.Marine Biol Lab, Ctr Ecosyst, 7 MBL St, Woods Hole, MA 02543 USA; 3.Univ Maine, Darling Marine Ctr, Sch Marine Sci, Walpole, ME 04573 USA |
推荐引用方式 GB/T 7714 | Brin, Lindsay D.,Giblin, Anne E.,Rich, Jeremy J.. Similar temperature responses suggest future climate warming will not alter partitioning between denitrification and anammox in temperate marine sediments[J]. GLOBAL CHANGE BIOLOGY,2017,23(1). |
APA | Brin, Lindsay D.,Giblin, Anne E.,&Rich, Jeremy J..(2017).Similar temperature responses suggest future climate warming will not alter partitioning between denitrification and anammox in temperate marine sediments.GLOBAL CHANGE BIOLOGY,23(1). |
MLA | Brin, Lindsay D.,et al."Similar temperature responses suggest future climate warming will not alter partitioning between denitrification and anammox in temperate marine sediments".GLOBAL CHANGE BIOLOGY 23.1(2017). |
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