Final Report to the Oil Spill Recovery Institute

نویسنده

  • Joan F. Braddock
چکیده

Despite large-scale development on the North Slope, no recent studies examining Alaskan arctic marine sediment microbial communities and their ability to metabolize petroleum compounds have been published. Microbial degradation of spilled petroleum hydrocarbons is a major mechanism of removal of these compounds from the environment. In this study we initiated a survey of marine sediment microbial populations in the Arctic Ocean to determine what microorganisms are present and what their metabolic capability is for degradation of various petroleum hydrocarbons. We also began a series of laboratory studies to examine the bioavailability of the polycyclic aromatic hydrocarbon, phenanthrene, to microorganisms in the presence of sediments collected near Barrow, Alaska. In our survey we found high total numbers of microorganisms in the sediments examined (about 10 cells/g dry wt. sediment). Only about 10 of these organisms were culturable in a marine heterotroph medium. Most probable numbers of culturable phenanthrene and hexadecane degraders were fairly high, about 10/g dry wt. sediment each. Mineralization potentials were low for both hexadecane and phenanthrene. Despite the low organic carbon content of these sediments (≤ 1.5%), substantial adsorption to particles occurred; adsorption was rapid. Laboratory bioavailability studies using these same sediments are ongoing. The results of this study will be useful in predicting the fate of spilled petroleum hydrocarbons in the Arctic Ocean.

برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

ثبت نام

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

منابع مشابه

Exxon Valdez Oil Spill Restoration Project Final Report Recovery Status of Barrow’s Goldeneyes Restoration Project 00466 Final Report

Barrow’s goldeneye (Bucephala islandica) population recovery from the Exxon Valdez oil spill was evaluated by examining potential constraints to recovery including food limitation, demographic limitations to population growth, and continued exposure to oil. Food abundance likely did not limit Barrow’s goldeneye population recovery. Although mussel (Mytilus trossulus) biomass was greater on unoi...

متن کامل

Exxon Valdez Oil Spill Restoration Project Final Report Patterns and Processes of Population Change in Selected Nearshore Vertebrate Predators Restoration Project 030423 Final Report

Sea otters (Enhydra lutris) and harlequin ducks (Histrionicus histrionicus) are two species for which there was strong evidence that (1) population recovery from the spill had not occurred by 1998, (2) hydrocarbon exposure was higher in oiled areas of Prince William Sound than in unoiled areas, and (3) demographic differences between areas, particularly survival, were a likely mechanism explain...

متن کامل

Experimental and Simulation - Assisted Feasibility Study of Gas Injection to Increase Oil Recovery Using a Combination of Semi-VAPEX and GAGD Techniques

Gas injection into heavy oil reservoirs could result in high ultimate recovery of oil. Experimental studies showed that an application of a combined technology of Gas Assisted Gravity Drainage (GAGD) and Vapor Extraction (VAPEX) could increase final oil recovery of a candidate viscous oil reservoir. In this paper the results of laboratory investigation are presented, including Pressure-Volu...

متن کامل

Static and dynamic resource allocation models for recovery of interdependent systems: application to the Deepwater Horizon oil spill

Determining where and when to invest resources during and after a disruption can challenge policy makers and homeland security officials. Two decision models, one static and one dynamic, are proposed to determine the optimal resource allocation to facilitate the recovery of impacted industries after a disruption where the objective is to minimize the production losses due to the disruption. The...

متن کامل

Analysis of Hyperspectral Imagery for Oil Spill Detection Using SAM Unmixing Algorithm Techniques

Oil spill is one of major marine environmental challenges. The main impacts of this phenomenon are preventing light transmission into the deep water and oxygen absorption, which can disturb the photosynthesis process of water plants. In this research, we utilize SpecTIR airborne sensor data to extract and classify oils spill for the Gulf of Mexico Deepwater Horizon (DWH) happened in 2010. For t...

متن کامل

ذخیره در منابع من


  با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید

برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

ثبت نام

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

عنوان ژورنال:

دوره   شماره 

صفحات  -

تاریخ انتشار 2001