| Titre : | Carbon Dynamics on the Louisiana Continental Shelf and Cross-Shelf Feeding of Hypoxia |
| Auteurs : | Brian Fry, Auteur ; Dubravko Justic, Auteur ; Philip Riekenberg, Auteur ; Erick M. Swenson, Auteur ; R. Eugene Turner, Auteur ; Lixia Wang, Auteur ; Lora Pride, Auteur ; Nancy N. Rabalais, Auteur ; Janis C. Kurtz, Auteur ; John C. Lehrter, Auteur ; Michael C. Murrell, Auteur ; Elizabeth H. Shadwick, Auteur ; Brandon Boyd, Auteur |
| Type de document : | Article |
| Dans : | Estuaries and Coasts (38(3) MAY 2015) |
| Article en page(s) : | 703-721 |
| Résumé : | Large-scale hypoxia regularly develops during the summer on the Louisiana continental shelf. Traditionally, hypoxia has been linked to the vast winter and spring nutrient inputs from the Mississippi River and its distributary, the Atchafalaya River. However, recent studies indicate that much of the shelf ecosystem is heterotrophic. We used data from five late July shelfwide cruises from 2006 to 2010 to examine carbon and oxygen production and identify net autotrophic areas of phytoplankton growth on the Louisiana shelf. During these summer times of moderate river flows, shelfwide pH and particulate organic carbon (POC) consistently showed strong signals for net autotrophy in low salinity ( |



