Nitrogen cycling in sediments of the Lagoon of Venice, Italy.
(2000) In Marine Ecology - Progress Series 199. p.1-11- Abstract
- In order to identify the importance of different areas for nitrogen retention in the Lagoon of Venice, Italy, undisturbed sediment cores of different origin were collected in late April 1998. The cores were transferred to the laboratory and incubated for denitrification activity using the method of 'nitrogen isotope pairing'. The sampled sediments were collected in a freshwater stream (Stn A)I an intertidal area (Stn B), in an area characterised by Ulva sp. (Stn C) and in an area vegetated by Zostera sp. (Stn D). Stn D was close to the lagoon outlet (mouth) and highly affected by tidal actions. The ambient concentrations of water column nitrate ranged from 132 to 4.4 mu M. The highest denitrification rate was found in the area with the... (More)
- In order to identify the importance of different areas for nitrogen retention in the Lagoon of Venice, Italy, undisturbed sediment cores of different origin were collected in late April 1998. The cores were transferred to the laboratory and incubated for denitrification activity using the method of 'nitrogen isotope pairing'. The sampled sediments were collected in a freshwater stream (Stn A)I an intertidal area (Stn B), in an area characterised by Ulva sp. (Stn C) and in an area vegetated by Zostera sp. (Stn D). Stn D was close to the lagoon outlet (mouth) and highly affected by tidal actions. The ambient concentrations of water column nitrate ranged from 132 to 4.4 mu M. The highest denitrification rate was found in the area with the highest concentration of water nitrate, i.e. at Stns A and B, 292 +/- 75 and 204 +/- 52 mu mol m(-2) h(-1), respectively. Sediment denitrification in the areas closer the lagoon outlet was significantly lower, 16 +/- 2 mu mol m(-2) h(-1) at Stn C and 11 +/- 2 mu mol m(-2) h(-1) at Stn D. Oxygen and nitrate consumption, release of ammonium and denitrification in the sediment at Stn B was correlated to the biomass of benthic infauna. About 30% of the denitrification in the B sediment was explained by the presence of benthic infauna. More than 50% of the denitrification in the sediment at Stn D was due to denitrification of nitrate produced by nitrification. (Less)
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https://lup.lub.lu.se/record/149795
- author
- Svensson, J M ; Carrer, M and Bocci, M
- publishing date
- 2000
- type
- Contribution to journal
- publication status
- published
- subject
- in
- Marine Ecology - Progress Series
- volume
- 199
- pages
- 1 - 11
- publisher
- Inter-Research
- external identifiers
-
- scopus:0034717825
- ISSN
- 1616-1599
- language
- English
- LU publication?
- no
- additional info
- The information about affiliations in this record was updated in December 2015. The record was previously connected to the following departments: Limnology (Closed 2011) (011007000)
- id
- 92be886c-3dac-45c4-9ab0-c022bdfdad4f (old id 149795)
- alternative location
- http://www.int-res.com/abstracts/meps/v199/p1-11/
- date added to LUP
- 2016-04-01 12:34:53
- date last changed
- 2022-04-21 17:27:49
@article{92be886c-3dac-45c4-9ab0-c022bdfdad4f,
abstract = {{In order to identify the importance of different areas for nitrogen retention in the Lagoon of Venice, Italy, undisturbed sediment cores of different origin were collected in late April 1998. The cores were transferred to the laboratory and incubated for denitrification activity using the method of 'nitrogen isotope pairing'. The sampled sediments were collected in a freshwater stream (Stn A)I an intertidal area (Stn B), in an area characterised by Ulva sp. (Stn C) and in an area vegetated by Zostera sp. (Stn D). Stn D was close to the lagoon outlet (mouth) and highly affected by tidal actions. The ambient concentrations of water column nitrate ranged from 132 to 4.4 mu M. The highest denitrification rate was found in the area with the highest concentration of water nitrate, i.e. at Stns A and B, 292 +/- 75 and 204 +/- 52 mu mol m(-2) h(-1), respectively. Sediment denitrification in the areas closer the lagoon outlet was significantly lower, 16 +/- 2 mu mol m(-2) h(-1) at Stn C and 11 +/- 2 mu mol m(-2) h(-1) at Stn D. Oxygen and nitrate consumption, release of ammonium and denitrification in the sediment at Stn B was correlated to the biomass of benthic infauna. About 30% of the denitrification in the B sediment was explained by the presence of benthic infauna. More than 50% of the denitrification in the sediment at Stn D was due to denitrification of nitrate produced by nitrification.}},
author = {{Svensson, J M and Carrer, M and Bocci, M}},
issn = {{1616-1599}},
language = {{eng}},
pages = {{1--11}},
publisher = {{Inter-Research}},
series = {{Marine Ecology - Progress Series}},
title = {{Nitrogen cycling in sediments of the Lagoon of Venice, Italy.}},
url = {{http://www.int-res.com/abstracts/meps/v199/p1-11/}},
volume = {{199}},
year = {{2000}},
}