Vinaora Nivo SliderVinaora Nivo SliderVinaora Nivo SliderVinaora Nivo Slider
Phytoplankton bloom
MODIS ocean colour image
Foam on the beach: A natural phenomenon?
Monitoring the earth oceans from space

isecalogo

log in
[ report an error in this record ]basket (1): add | show Print this page
one publication added to basket [244117]
Effect of increases in temperature and nutrients on phytoplankton community structure and photosynthesis in the western English Channel
Xie, Y.; Tilstone, G.H.; Widdicombe, C.; Woodward, E.M.S.; Harris, C.; Barnes, M.K. (2015). Effect of increases in temperature and nutrients on phytoplankton community structure and photosynthesis in the western English Channel. Mar. Ecol. Prog. Ser. 519: 61-73. http://dx.doi.org/10.3354/meps11101
Peer reviewed article  
Available in  Authors 
Keywords
    Chemical reactions > Photochemical reactions > Photosynthesis
    Eutrophication
    Nutrients
    Properties > Physical properties > Thermodynamic properties > Temperature
    ANE, English Channel [Marine Regions]
    Marine/Coastal
Author keywords
    Phytoplankton community structure; Western English Channel
Authors  Top 
  • Xie, Y.
  • Tilstone, G.H., more
  • Widdicombe, C.
  • Woodward, E.M.S.
  • Harris, C.
  • Barnes, M.K.
Abstract
    Anthropogenic climate change is exerting pressures on coastal ecosystems through increases in temperature, precipitation and ocean acidification. Phytoplankton community structure and photo-physiology are therefore adapting to these conditions. Changes in phytoplankton biomass and photosynthesis in relation to temperature and nutrient concentrations were assessed using a 14 yr dataset from a coastal station in the western English Channel (WEC). Dinoflagellate and coccolithophorid biomass exhibited a positive correlation with temperature, reaching the highest biomass between 15 and 17°C. Diatoms showed a negative correlation with temperature, with highest biomass at 10°C. Chlorophyll a (chl a) normalised maximum light-saturated photosynthetic rates (PBm) exhibited a hyperbolic response to increasing temperature, with an initial linear increase from 8 to 11°C and reaching a plateau from 12°C. There was, however, no significant positive correlation between nutrients and phytoplankton biomass or PBm, which reflects the lag time between nutrient input and phytoplankton growth at this coastal site. The major phytoplankton groups that occurred at this site occupied distinct thermal niches, which in turn modified PBm. Increasing temperature and higher water column stratification were major factors in the initiation of dinoflagellate blooms at this site. Dinoflagellate blooms during summer also co-varied with silicate concentration and acted as a tracer of dissolved inorganic nitrogen and phosphate from river run-off, which were subsequently reduced during these blooms. The data imply that increasing temperature and high river runoff during summer will promote dinoflagellate blooms in the WEC.
All data in the Integrated Marine Information System (IMIS) is subject to the VLIZ privacy policy Top | Authors 
adrinord vito PML greenwich

VLIZ.

nausicaa

 cemare logo NIOZ2 

Part-financed by ERDF through the Interreg IV A 2 Seas Programme “Investing in your Future”
INTERREG IVa 2Seas Project

 “The document reflects the author's views. The INTERREG IVA 2 Seas Programme Authorities are not liable for any use that may be made of the information contained therein.”

Website developed and maintained by VLIZ

Subscribe This email address is being protected from spambots. You need JavaScript enabled to view it. to receive the ISECA newsletter by email