Nitrogen fixation in Red Sea seagrass meadows

Handle URI:
http://hdl.handle.net/10754/624780
Title:
Nitrogen fixation in Red Sea seagrass meadows
Authors:
Abdallah, Malak ( 0000-0002-7561-5419 )
Abstract:
Seagrasses are key coastal ecosystems, providing many ecosystem services. Seagrasses increase biodiversity as they provide habitat for a large set of organisms. In addition, their structure provides hiding places to avoid predation. Seagrasses can grow in shallow marine coastal areas, but several factors regulate their growth and distribution. Seagrasses can uptake different kinds of organic and inorganic nutrients through their leaves and roots. Nitrogen and phosphorous are the most important nutrients for seagrass growth. Biological nitrogen fixation is the conversion of atmospheric nitrogen into ammonia by diazotrophic bacteria. This process provides a significant source of nitrogen for seagrass growth. The nitrogen fixation is controlled by the nif genes which are found in diazotrophs. The main goal of the project is to measure nitrogen fixation rates on seagrass sediments, in order to compare among various seagrass species from the Red Sea. Moreover, we will compare the fixing rates of the Vegetated areas with the bare sediments. This project will help to ascertain the role of nitrogen fixing bacteria in the development of seagrass meadows.
Advisors:
Duarte, Carlos M. ( 0000-0002-1213-1361 )
Committee Member:
Daffonchio, Daniele ( 0000-0003-0947-925X ) ; Agusti, Susana ( 0000-0003-0536-7293 )
KAUST Department:
Biological and Environmental Sciences and Engineering (BESE) Division
Program:
Bioscience
Issue Date:
May-2017
Type:
Thesis
Appears in Collections:
Theses

Full metadata record

DC FieldValue Language
dc.contributor.advisorDuarte, Carlos M.en
dc.contributor.authorAbdallah, Malaken
dc.date.accessioned2017-06-07T11:47:26Z-
dc.date.available2017-06-07T11:47:26Z-
dc.date.issued2017-05-
dc.identifier.urihttp://hdl.handle.net/10754/624780-
dc.description.abstractSeagrasses are key coastal ecosystems, providing many ecosystem services. Seagrasses increase biodiversity as they provide habitat for a large set of organisms. In addition, their structure provides hiding places to avoid predation. Seagrasses can grow in shallow marine coastal areas, but several factors regulate their growth and distribution. Seagrasses can uptake different kinds of organic and inorganic nutrients through their leaves and roots. Nitrogen and phosphorous are the most important nutrients for seagrass growth. Biological nitrogen fixation is the conversion of atmospheric nitrogen into ammonia by diazotrophic bacteria. This process provides a significant source of nitrogen for seagrass growth. The nitrogen fixation is controlled by the nif genes which are found in diazotrophs. The main goal of the project is to measure nitrogen fixation rates on seagrass sediments, in order to compare among various seagrass species from the Red Sea. Moreover, we will compare the fixing rates of the Vegetated areas with the bare sediments. This project will help to ascertain the role of nitrogen fixing bacteria in the development of seagrass meadows.en
dc.language.isoenen
dc.subjectNitrogen fixationen
dc.subjectseagrassesen
dc.subjectRed Seaen
dc.titleNitrogen fixation in Red Sea seagrass meadowsen
dc.typeThesisen
dc.contributor.departmentBiological and Environmental Sciences and Engineering (BESE) Divisionen
thesis.degree.grantorKing Abdullah University of Science and Technologyen_GB
dc.contributor.committeememberDaffonchio, Danieleen
dc.contributor.committeememberAgusti, Susanaen
thesis.degree.disciplineBioscienceen
thesis.degree.nameMaster of Scienceen
dc.person.id142837en
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