|
|
|
|
|
| Kheireddine, Malika; Dall'Olmo, Giorgio; Ouhssain, Mustapha; Krokos, George; Claustre, Hervé; Schmechtig, Catherine; Poteau, Antoine; Zhan, Peng; Hoteit, Ibrahim; Jones, Burton H.. |
| The export and fate of organic carbon in the mesopelagic zone are still poorly understood and quantified due to lack of observations. We exploited data from a biogeochemical‐Argo float that was deployed in the Red Sea to study how a warm and hypoxic environment can affect the fate of the organic carbon in the ocean's interior. We observed that only 10% of the particulate organic carbon (POC) exported survived at depth due to remineralization processes in the upper mesopelagic zone. We also found that POC exported was rapidly degraded in a first stage and slowly in a second one, which may be dependent on the palatability of the organic matter. We observed that apparent oxygen utilization (AOU)‐based loss rates (a proxy of the remineralization of total... |
| Tipo: Text |
Palavras-chave: Carbon export; Carbon loss rates; Mesopelagic zone; Temperature; Oxygen; Tropical ecosystem. |
| Ano: 2020 |
URL: https://archimer.ifremer.fr/doc/00655/76730/77877.pdf |
| |
|
|
| Barbier, Edward B.. |
| This paper investigates the relationships among land-use change, biological invasion, and interspecific competition in a tropical ecosystem by linking a behavioral model of land conversion by agriculture and an ecological model of interspecific competition between a native species and an exotic invader. The model is used to examine how relative farm prices and access to forest areas influence land clearing and thus the ability of the invasive species to eliminate the native species. Simulations show that only a 20% rise in relative prices and a 2.75% increase in forest access are necessary for this outcome to occur. |
| Tipo: Journal Article |
Palavras-chave: Biological invasion; Interspecific competition; Land clearing; Tropical ecosystem; Tropical forest; O13; Q20; Q24. |
| Ano: 2007 |
URL: http://purl.umn.edu/37275 |
| |
|
|
|
