Reconstructing the biogeochemical consequences of disturbances
نویسندگان
چکیده
منابع مشابه
Reconstructing Disturbances and Their Biogeochemical Consequences over Multiple Timescales
http://bioscience.oxfordjournals.org XXXX XXXX / Vol. XX No. X • BioScience 1 BioScience XX: 1–12. © The Author(s) 2014. Published by Oxford University Press on behalf of the American Institute of Biological Sciences. All rights reserved. For Permissions, please e-mail: [email protected]. doi:10.1093/biosci/bit017 Advance Access publication XXXX XX, XXXX Reconstructing Disturbances a...
متن کاملBiogeochemical consequences of macrofauna burrow ventilation†
The burrow walls created by macrofauna in aquatic sediments are sites of intense chemical mass transfer. Quantitative measurement of their significance is, however, difficult because chemistry in the immediate vicinity of burrow walls is temporally dynamic due to periodic ventilation of burrows by macrofauna. A temporally dynamic, 2D multicomponent diffusion-reaction model was utilized to depic...
متن کاملThe biogeochemical consequences of the mid-Cretaceous superplume
Superplumes have been put forward as a driving mechanism for a variety of global phenomena, ranging from geomagnetic reversal anomalies to global climate warming via massive additions of volcanic CO2. Here I propose that rates of uplift caused by modern superplumes would result in the liberation of hundreds of Gt of carbon from methane clathrates on a timescale from tens to hundreds of millions...
متن کاملThe Biogeochemical Consequences of Saltwater Intrusion to Freshwater Wetland Sediment
Saltwater intrusion driven by water extraction, coastal modifications, and climate change may alter the biogeochemical cycling of freshwater coastal wetlands. Anaerobic respiration in freshwater wetlands is typically dominated by methanogenesis, leading to a high methane (CH 4 ) flux, but the availability of sulfate (SO4 2— ) in seawater may shift the dominant pathway to SO4 2— reduction, decre...
متن کاملBiogeochemical consequences of an oxygenated intrusion into an anoxic fjord
BACKGROUND This paper is based on the studies of the biogeochemical structure of the water column in the anoxic Fjord Hunnbunn (south-eastern Norway) performed in 2009, 2011 and 2012. This Fjord is an enclosed basin of brackish water separated by a narrow and shallow outlet to the sea with a permanently anoxic layer. We show how an oxygenated intrusion could lead to both positive and negative e...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Eos, Transactions American Geophysical Union
سال: 2012
ISSN: 0096-3941
DOI: 10.1029/2012eo470008