Transparent exopolymer particle binding of organic and inorganic particles in the Red Sea: Implications for downward transport of biogenic materials
- 1King Abdullah University of Science and Technology (KAUST), Water Desalination and Reuse Center (WDRC), Biological and Environmental Science and Engineering (BESE), Thuwal 23955-6900, Saudi Arabia
- 2Woods Hole Oceanographic Institution, Biology Department, Woods Hole, MA 02543, USA
- 3Coastal and Marine Resources Core Laboratory, King Abdullah University of Science and Technology (KAUST), Thuwal, Saudi Arabia
- 4Guangzhou Institute of Advanced Technology, CAS, Haibin Road #1121, Nansha district, Guangzhou 511458, China
- 5U. A. Whitaker College of Engineering, Emergent Technologies Institute, Florida Gulf Coast University, 16301 Innovation Lane, Fort Myers, Florida 33965-6565
- 6Desalination Technologies Research Institute (DTRI), Saline Water Conversion Corporation (SWCC), P.O. Box 8328, Al-Jubail 31951, Saudi Arabia
- 1King Abdullah University of Science and Technology (KAUST), Water Desalination and Reuse Center (WDRC), Biological and Environmental Science and Engineering (BESE), Thuwal 23955-6900, Saudi Arabia
- 2Woods Hole Oceanographic Institution, Biology Department, Woods Hole, MA 02543, USA
- 3Coastal and Marine Resources Core Laboratory, King Abdullah University of Science and Technology (KAUST), Thuwal, Saudi Arabia
- 4Guangzhou Institute of Advanced Technology, CAS, Haibin Road #1121, Nansha district, Guangzhou 511458, China
- 5U. A. Whitaker College of Engineering, Emergent Technologies Institute, Florida Gulf Coast University, 16301 Innovation Lane, Fort Myers, Florida 33965-6565
- 6Desalination Technologies Research Institute (DTRI), Saline Water Conversion Corporation (SWCC), P.O. Box 8328, Al-Jubail 31951, Saudi Arabia
Abstract. Binding of particulate and dissolved organic matter in the water column by marine gels allows sinking and cycling of organic matter into deeper water of the Red Sea and other marine water bodies. A series of four offshore profiles were made at which concentrations of bacteria, algae, particulate transparent exopolymer particles (p-TEP), colloidal transparent exopolymer particles (c-TEP), and the fractions of natural organic matter (NOM), including biopolymers, humic substances, low molecular weight neutrals, and low molecular weight acids were measured to depths ranging from 90 to 300 m. It was found that a statistically-significant relationship occurs between the concentrations of p-TEP and bacteria while a minimal, non-significant relationship between p-TEP and algae occurs. This likely reflects the low abundance of larger algal species in the study region. Variation in the biopolymer fraction of NOM in relationship to TEP and bacteria suggests that extracellular discharges of polysaccharides and proteins from the bacteria and algae are occurring without immediate abiotic assembly into p-TEP. In the water column below the photic zone, TOC, bacteria, and biopolymers show a generally common rate of reduction in concentration, but p-TEP decreases at a diminished rate, showing that it persists in moving organic carbon deeper into the water column despite consumption by bacteria.
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Preprint
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Abdullah H. A. Dehwah et al.
Interactive discussion


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RC1: 'Comment on 'Transparent exopolymer particle binding of organic and inorganic particles in the Red Sea: Implications for downward transport of biogenic materials'', Anonymous Referee #1, 02 Apr 2019
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AC2: 'Authors response to Reviewer #1 Comments', Thomas M. Missimer, 25 Jul 2019
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AC3: 'Revised Manaucript with Redlined Changes', Thomas M. Missimer, 25 Jul 2019
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AC2: 'Authors response to Reviewer #1 Comments', Thomas M. Missimer, 25 Jul 2019
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RC2: 'Comments', Anonymous Referee #2, 05 Jul 2019
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AC1: 'Authors response to Reviewer #2 Comments', Thomas M. Missimer, 25 Jul 2019
-
AC4: 'Revised Manaucript with Redlined Changes', Thomas M. Missimer, 25 Jul 2019
-
AC1: 'Authors response to Reviewer #2 Comments', Thomas M. Missimer, 25 Jul 2019
Interactive discussion


-
RC1: 'Comment on 'Transparent exopolymer particle binding of organic and inorganic particles in the Red Sea: Implications for downward transport of biogenic materials'', Anonymous Referee #1, 02 Apr 2019
-
AC2: 'Authors response to Reviewer #1 Comments', Thomas M. Missimer, 25 Jul 2019
-
AC3: 'Revised Manaucript with Redlined Changes', Thomas M. Missimer, 25 Jul 2019
-
AC2: 'Authors response to Reviewer #1 Comments', Thomas M. Missimer, 25 Jul 2019
-
RC2: 'Comments', Anonymous Referee #2, 05 Jul 2019
-
AC1: 'Authors response to Reviewer #2 Comments', Thomas M. Missimer, 25 Jul 2019
-
AC4: 'Revised Manaucript with Redlined Changes', Thomas M. Missimer, 25 Jul 2019
-
AC1: 'Authors response to Reviewer #2 Comments', Thomas M. Missimer, 25 Jul 2019
Abdullah H. A. Dehwah et al.
Abdullah H. A. Dehwah et al.
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