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DOI | 10.1073/pnas.1719963115 |
Allometric scaling of estuarine ecosystem metabolism | |
Nidzieko, Nicholas J. | |
2018-06-26 | |
发表期刊 | PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA
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ISSN | 0027-8424 |
出版年 | 2018 |
卷号 | 115期号:26页码:6733-6738 |
文章类型 | Article |
语种 | 英语 |
国家 | USA |
英文摘要 | There are still significant uncertainties in the magnitude and direction of carbon fluxes through coastal ecosystems. An important component of these biogeochemical budgets is ecosystem metabolism, the net result of organismal metabolic processes within an ecosystem. In this paper, I present a synthesis of published ecosystem metabolism studies from coastal ecosystems and describe an empirical observation that size-dependent patterns in aquatic gross primary production and community respiration exist across a wide range of coastal geomorphologies. Ecosystem metabolism scales to the 3/4 power with volume in deeper estuaries dominated by pelagic primary production and nearly linearly with area in shallow estuaries dominated by benthic primary production. These results can be explained by applying scaling arguments for efficient, directed transport networks developed to explain similar size-dependent patterns in organismal metabolism. The main conclusion from this synthesis is that the residence time of new, nutrient-rich water is a fundamental organizing principle for the observed patterns. Residence time changes allometrically with size in pelagic ecosystems because velocities change by only an order of magnitude across systems that span more than ten orders of magnitude in size. This nonisometric change in velocity with size requires lower specific metabolic rates at larger ecosystem sizes. This change in transport may also explain a shift from predominantly net heterotrophy to net autotrophy with increasing size. The scaling results are applied to the total estuarine area in the continental United States to estimate the contribution of estuarine systems to the overall coastal budget of organic carbon. |
英文关键词 | ecosystem metabolism estuaries primary production allometric scaling metabolic theory |
领域 | 地球科学 ; 气候变化 ; 资源环境 |
收录类别 | SCI-E |
WOS记录号 | WOS:000436245000074 |
WOS关键词 | ORGANIC-CARBON BALANCE ; COASTAL OCEAN ; PHYTOPLANKTON COMMUNITIES ; AQUATIC ECOSYSTEMS ; SIZE-STRUCTURE ; VARIABILITY ; ECOLOGY ; PREDICTION ; DIVERSITY ; ABUNDANCE |
WOS类目 | Multidisciplinary Sciences |
WOS研究方向 | Science & Technology - Other Topics |
URL | 查看原文 |
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文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/204941 |
专题 | 地球科学 资源环境科学 气候变化 |
作者单位 | Univ Calif Santa Barbara, Dept Geog, Santa Barbara, CA 93106 USA |
推荐引用方式 GB/T 7714 | Nidzieko, Nicholas J.. Allometric scaling of estuarine ecosystem metabolism[J]. PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA,2018,115(26):6733-6738. |
APA | Nidzieko, Nicholas J..(2018).Allometric scaling of estuarine ecosystem metabolism.PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA,115(26),6733-6738. |
MLA | Nidzieko, Nicholas J.."Allometric scaling of estuarine ecosystem metabolism".PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA 115.26(2018):6733-6738. |
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