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Hydroclimatic And Circulation Anomalies Associated With The Gulf Of Mexico Hypoxic Zone, Natalie Amanda Vines
Hydroclimatic And Circulation Anomalies Associated With The Gulf Of Mexico Hypoxic Zone, Natalie Amanda Vines
LSU Master's Theses
The Gulf of Mexico Hypoxic Zone (GMHZ) has been observed along the Louisiana continental shelf west of the mouth of the Mississippi River since 1985. Previous research associated the surface area of the GMHZ with runoff in the Mississippi-Missouri River Basin (MMRB), with "wet" years linked to larger GMHZs than "dry" years. This research uses monthly climate divisional Palmer Drought Severity Index (PDSI) data and Palmer Hydrological Drought Index (PHDI) data and monthly atmospheric teleconnection indices are used to predict the GMHZ extent up to several months in advance, using stepwise multiple regression techniques. The predictive equations are then used …
Benthic Communities In The Northern Gulf Of Mexico Hypoxic Area: Potential Prey For Demersal Fish, Melissa Millman Baustian
Benthic Communities In The Northern Gulf Of Mexico Hypoxic Area: Potential Prey For Demersal Fish, Melissa Millman Baustian
LSU Master's Theses
Bottom-water hypoxia (≤2 mg O2 l-1) usually occurs on an annual basis on the Louisiana/Texas continental shelf from mid-May through mid-September over a large area (up to 20,000 km2 in mid-summer). The effects of hypoxia on the benthic infauna (potential prey) for demersal fish were examined, because changes in optimal diet can lead to negative impacts on growth and reproduction. Benthic samples were taken in three areas (inshore and offshore out of hypoxia and in the hypoxic area) during August 2003. Samples were also taken monthly from September 2003 to October 2004 at a fixed station …