Temporal variability of benthic-pelagic coupling in shallow enclosed environment: A case study with eutrophying shrimp ponds.
Benthic-pelagic coupling
Bioturbation
Eutrophication
Microphytobenthos
Shrimp
Tropical aquaculture
Journal
Marine environmental research
ISSN: 1879-0291
Titre abrégé: Mar Environ Res
Pays: England
ID NLM: 9882895
Informations de publication
Date de publication:
Apr 2019
Apr 2019
Historique:
received:
19
12
2018
revised:
08
03
2019
accepted:
14
03
2019
pubmed:
27
3
2019
medline:
15
2
2020
entrez:
27
3
2019
Statut:
ppublish
Résumé
The evolution of benthic pelagic coupling was followed in two semi-intensive shrimp ponds in New Caledonia, with a special emphasis on the role of microphytobenthos (MPB). Three distinct periods could be identified. During the first period, MPB activity led to relative decoupling between the water column and the sediment, both compartments being autotrophic with low nutrients exchanges. During the second period, the sediment operated at the edge of a functional switch between autotrophy and heterotrophy. The amplitude of nutrient fluxes depended of the pool considered (DIN, DIP) and showed light dark variation. In the last period, sediment switched to heterotrophy with the establishment of benthic-pelagic coupling concomitantly to a massive sediment resuspension due to the shrimp activity. These findings should be considered for the management of aquaculture ponds and shallow enclosed water bodies.
Identifiants
pubmed: 30910252
pii: S0141-1136(18)30896-1
doi: 10.1016/j.marenvres.2019.03.005
pii:
doi:
Types de publication
Journal Article
Langues
eng
Sous-ensembles de citation
IM
Pagination
46-56Informations de copyright
Copyright © 2019 Elsevier Ltd. All rights reserved.