Size-fractionated primary production and nitrogen assimilation in the North-Western Mediterranean Sea during January 1989

Nick Owens; A. P. Rees; E. Malcolm S. Woodward; R. F.C. Mantoura

Size-fractionated primary production and nitrogen assimilation in the North-Western Mediterranean Sea during January 1989

Nick Owens, A. P. Rees, E. Malcolm S. Woodward, R. F.C. Mantoura

SAMS UHI

Research output: Chapter in Book/Report/Conference proceeding › Chapter

Abstract

In situ rates of phytoplankton production and nitrogen assimilation
were measured at five stations in the region of the plume of the
River Rhone. Onshore gradients of increasing production and nitrogen
assimilation were observed, with the highest rates found at the
immediate mouth of the river. At this site ammonium assimilation
appeared to support the majority of the nitrogen requirement. At all
sites, organisms < 5μπι diameter contributed to a significant
proportion of the primary production and nitrogen assimilation
rates; eg up to 75% in the most offshore sites and up to 50% at the
nearshore sites. Various 'nutritional status indices' suggested that
the production over much of the area was slightly nitrogen limited.
A crude estimate of the influence of the Rhone suggests that
production was elevated approximately 2 fold over the entire study
area, and up to 4 fold in the immediate mouth.

Original language	English
Title of host publication	EROS 2000
Subtitle of host publication	(EUROPEAN RIVER OCEAN SYSTEM) FIRST WORKSHOP ON THE NORTH-WEST MEDITERRANEAN SEA PARIS, 7-9 MARCH 1989
Pages	126-135
Number of pages	10
Publication status	Published - 1989

Publication series

Name	Water Pollution Research Reports
Publisher	Commission of the European Communities
Number	13

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Owens, N., Rees, A. P., Woodward, E. M. S., & Mantoura, R. F. C. (1989). Size-fractionated primary production and nitrogen assimilation in the North-Western Mediterranean Sea during January 1989. In EROS 2000: (EUROPEAN RIVER OCEAN SYSTEM) FIRST WORKSHOP ON THE NORTH-WEST MEDITERRANEAN SEA PARIS, 7-9 MARCH 1989 (pp. 126-135). (Water Pollution Research Reports; No. 13). https://op.europa.eu/en/publication-detail/-/publication/673ec9e3-85df-4cd8-9681-3a7034503b39/language-en/format-PDF/source-277759307

@inbook{cf1eb86330e44ebe9b76d19470e95e6b,

title = "Size-fractionated primary production and nitrogen assimilation in the North-Western Mediterranean Sea during January 1989",

abstract = "In situ rates of phytoplankton production and nitrogen assimilationwere measured at five stations in the region of the plume of theRiver Rhone. Onshore gradients of increasing production and nitrogenassimilation were observed, with the highest rates found at theimmediate mouth of the river. At this site ammonium assimilationappeared to support the majority of the nitrogen requirement. At allsites, organisms < 5μπι diameter contributed to a significantproportion of the primary production and nitrogen assimilationrates; eg up to 75% in the most offshore sites and up to 50% at thenearshore sites. Various 'nutritional status indices' suggested thatthe production over much of the area was slightly nitrogen limited.A crude estimate of the influence of the Rhone suggests thatproduction was elevated approximately 2 fold over the entire studyarea, and up to 4 fold in the immediate mouth.",

author = "Nick Owens and Rees, {A. P.} and Woodward, {E. Malcolm S.} and Mantoura, {R. F.C.}",

note = "No part of this publication may be reproduced, stored in a retrieval system, or transmitted in any form or by any means, electronic, mechanical, photocopying, recording or otherwise, without indicating the above mentioned references. Author was not affiliated to SAMS at the time of publication",

year = "1989",

language = "English",

isbn = " 2-87263-031-7",

series = "Water Pollution Research Reports",

publisher = "Commission of the European Communities",

number = "13",

pages = "126--135",

booktitle = "EROS 2000",

}

Owens, N, Rees, AP, Woodward, EMS & Mantoura, RFC 1989, Size-fractionated primary production and nitrogen assimilation in the North-Western Mediterranean Sea during January 1989. in EROS 2000: (EUROPEAN RIVER OCEAN SYSTEM) FIRST WORKSHOP ON THE NORTH-WEST MEDITERRANEAN SEA PARIS, 7-9 MARCH 1989. Water Pollution Research Reports, no. 13, pp. 126-135. <https://op.europa.eu/en/publication-detail/-/publication/673ec9e3-85df-4cd8-9681-3a7034503b39/language-en/format-PDF/source-277759307>

Size-fractionated primary production and nitrogen assimilation in the North-Western Mediterranean Sea during January 1989. / Owens, Nick; Rees, A. P.; Woodward, E. Malcolm S. et al.
EROS 2000: (EUROPEAN RIVER OCEAN SYSTEM) FIRST WORKSHOP ON THE NORTH-WEST MEDITERRANEAN SEA PARIS, 7-9 MARCH 1989. 1989. p. 126-135 (Water Pollution Research Reports; No. 13).

Research output: Chapter in Book/Report/Conference proceeding › Chapter

TY - CHAP

T1 - Size-fractionated primary production and nitrogen assimilation in the North-Western Mediterranean Sea during January 1989

AU - Owens, Nick

AU - Rees, A. P.

AU - Woodward, E. Malcolm S.

AU - Mantoura, R. F.C.

N1 - No part of this publication may be reproduced, stored in a retrieval system, or transmitted in any form or by any means, electronic, mechanical, photocopying, recording or otherwise, without indicating the above mentioned references. Author was not affiliated to SAMS at the time of publication

PY - 1989

Y1 - 1989

N2 - In situ rates of phytoplankton production and nitrogen assimilationwere measured at five stations in the region of the plume of theRiver Rhone. Onshore gradients of increasing production and nitrogenassimilation were observed, with the highest rates found at theimmediate mouth of the river. At this site ammonium assimilationappeared to support the majority of the nitrogen requirement. At allsites, organisms < 5μπι diameter contributed to a significantproportion of the primary production and nitrogen assimilationrates; eg up to 75% in the most offshore sites and up to 50% at thenearshore sites. Various 'nutritional status indices' suggested thatthe production over much of the area was slightly nitrogen limited.A crude estimate of the influence of the Rhone suggests thatproduction was elevated approximately 2 fold over the entire studyarea, and up to 4 fold in the immediate mouth.

AB - In situ rates of phytoplankton production and nitrogen assimilationwere measured at five stations in the region of the plume of theRiver Rhone. Onshore gradients of increasing production and nitrogenassimilation were observed, with the highest rates found at theimmediate mouth of the river. At this site ammonium assimilationappeared to support the majority of the nitrogen requirement. At allsites, organisms < 5μπι diameter contributed to a significantproportion of the primary production and nitrogen assimilationrates; eg up to 75% in the most offshore sites and up to 50% at thenearshore sites. Various 'nutritional status indices' suggested thatthe production over much of the area was slightly nitrogen limited.A crude estimate of the influence of the Rhone suggests thatproduction was elevated approximately 2 fold over the entire studyarea, and up to 4 fold in the immediate mouth.

M3 - Chapter

SN - 2-87263-031-7

T3 - Water Pollution Research Reports

SP - 126

EP - 135

BT - EROS 2000

ER -

Size-fractionated primary production and nitrogen assimilation in the North-Western Mediterranean Sea during January 1989

Abstract

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