English
 
Help Privacy Policy Disclaimer
  Advanced SearchBrowse

Item

ITEM ACTIONSEXPORT
  Particulate matter filtration and seasonal nutrient dynamics in permeable carbonate and silicate sands of the Gulf of Aqaba, Red Sea

Rasheed, M., Badran, M. I., & Huettel, M. (2003). Particulate matter filtration and seasonal nutrient dynamics in permeable carbonate and silicate sands of the Gulf of Aqaba, Red Sea. Coral Reefs, 22(2), 167-177.

Item is

Basic

show hide
Genre: Journal Article

Files

show Files
hide Files
:
Rasheed3.pdf (Publisher version), 548KB
 
File Permalink:
-
Name:
Rasheed3.pdf
Description:
-
Visibility:
Restricted ( Max Planck Society (every institute); )
MIME-Type / Checksum:
application/pdf
Technical Metadata:
Copyright Date:
-
Copyright Info:
-
License:
-

Locators

show

Creators

show
hide
 Creators:
Rasheed, M.1, Author              
Badran, M. I., Author
Huettel, M.1, Author              
Affiliations:
1Flux Group, Max Planck Institute for Marine Microbiology, Max Planck Society, ou_2481701              

Content

show
hide
Free keywords: carbonate; silicate; sediment; coral reef; nutrients; pore water; advection
 Abstract: This study compares mineralization in permeable silicate and carbonate sands in the shallow shelf of the Gulf of Aqaba. From July 1999 to March 2000, we monitored concentrations of inorganic nutrients in water and pore water at two neighboring sites, one dominated by silicate, the other by carbonate sand. Although the carbonate was coarser than the quartz sand, organic matter, dissolved inorganic nitrogen (DIN), and ortho-phosphate concentrations in the biogenic carbonate sediment always exceeded those in the terrigenic silicate sands (factor 1.5–2.0 for organic matter, 1.7–14.0 for nutrients). Higher nutrient concentrations in the water column during winter months caused increases in pore-water nutrient concentrations in both sediments down to 10 cm depth with no significant delay, emphasizing the effect of advective transport of solutes and particles into permeable sands. An experiment was conducted where sieved clean quartz and carbonate sands of same grain size (250–500 µm) were incubated in-situ. Although exposed to the same water and boundary current conditions, the sieved carbonate sand accumulated more organic matter and developed higher nutrient concentrations than the incubated silicate sediment. We conclude that the mineralogical characteristics of the carbonate sand (higher porosity, sorption capacity and pH buffer capacity) enhance the filtration capacity, and the biocatalytic conversion efficiency relative to the smooth crystalline quartz grains.

Details

show
hide
Language(s): eng - English
 Dates: 2003-05-072003-07
 Publication Status: Published in print
 Pages: 11
 Publishing info: -
 Table of Contents: -
 Rev. Type: Peer
 Identifiers: eDoc: 178578
ISI: 000184019500012
 Degree: -

Event

show

Legal Case

show

Project information

show

Source 1

show
hide
Title: Coral Reefs
  Other : Coral Reefs
Source Genre: Journal
 Creator(s):
Affiliations:
Publ. Info: Berlin : Springer
Pages: - Volume / Issue: 22 (2) Sequence Number: - Start / End Page: 167 - 177 Identifier: ISSN: 0722-4028
CoNE: https://pure.mpg.de/cone/journals/resource/954925533008