NDLI: Short-term and seasonal variation in metabolic balance in Liverpool Bay

Content Provider	Springer Nature Link
Author	Panton, Auska Mahaffey, Claire Greenwood, Naomi Hopkins, Joanne Montagnes, David Sharples, Jonathan
Copyright Year	2011
Abstract	Regions of freshwater influence (ROFIs) are dynamic areas within the coastal seas that experience cycles of stability driven by density gradients and the spring-neap tidal cycle. As a result, pulses of biological production may occur on a more frequent timescale than the classic seasonal cycle. Net community production (NCP) rates and chlorophyll a concentration are presented from a site within the ROFI of Liverpool Bay and compared to similar measurements made at a site outside the ROFI during 2009. The influence of water column stability on biological production in the ROFI was also investigated using high-frequency observations from a Cefas Smartbuoy. Both sites were autotrophic from spring to autumn before becoming heterotrophic over winter. NCP at the inshore site was estimated to range from 30.8 to 50.4 gC m−2 year−1. A linear relationship detected between chlorophyll a and NCP from both sites was used to estimate metabolic balance over 1 year at the ROFI site using high-resolution chlorophyll a concentrations from the Smartbuoy but was found to poorly replicate NCP rates compared to those derived from dissolved oxygen fluxes. There was no clear biological response to periods of stratification within the ROFI, and it is proposed that changes in light attenuation in the Liverpool Bay ROFI, driven not only by stratification but also by fluctuations in riverine sediment load, most likely play an important role in controlling phytoplankton growth in this region.
Starting Page	295
Ending Page	306
Page Count	12
File Format	PDF
ISSN	16167341
Journal	Deutsche Hydrografische Zeitschrift
Volume Number	62
Issue Number	2
e-ISSN	16167228
Language	English
Publisher	Springer-Verlag
Publisher Date	2011-10-18
Publisher Place	Berlin, Heidelberg
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Autotrophy Heterotrophy Stratification Liverpool Bay ROFI Oxygen Oceanography Meteorology/Climatology Environmental Monitoring/Analysis Geophysics/Geodesy Fluid- and Aerodynamics
Content Type	Text
Resource Type	Article
Subject	Oceanography

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