TY  - JOUR
PB  - Springer Science and Business Media LLC
A1  - de Groot, Tim R
A1  - Menoud, Malika
A1  - van Bleijswijk, Judith
A1  - van Leeuwen, Sonja M
A1  - van der Molen, J
A1  - Hernando-Morales, Victor
A1  - Czerski, Helen
A1  - Maazallahi, Hossein
A1  - Walter, Sylvia
A1  - Rush, Darci
A1  - Röckmann, Thomas
A1  - Niemann, Helge
JF  - Communications Earth & Environment
N1  - © 2024 Springer Nature Limited. This article is licensed under a Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/).
VL  - 5
UR  - http://dx.doi.org/10.1038/s43247-024-01483-8
ID  - discovery10194933
N2  - The ocean?s methane emission to the atmosphere is dominated by continental shelves where cold seeps are globally common features. Seeps emit methane into the hydrosphere, but temporal variations and controls of seep activity and the efficiency of the microbial methane filter in the water column are scarce. Here we address these knowledge gaps by measuring whole water column methane inventories and methanotrophic activity at a temporal resolution of 2?hours at a North Sea cold seep (Doggerbank) in summer and autumn. We found that bottom water methane inventories were 68% (summer) and 11% (autumn) higher during low tide compared to high tide coinciding with increased methanotrophic activity. The activity of methanotrophs was reduced during autumn when the water column was fully mixed and matched by higher methane emissions to the atmosphere. Our results show that tides are underappreciated controls on seepage and methanotrophic activity and methane sea?atmosphere fluxes.
IS  - 1
AV  - public
TI  - Tidal and seasonal influence on cold seep activity and methanotroph efficiency in the North Sea
Y1  - 2024/07/12/
ER  -