• English
    • français
    • español
    • русский
  • English 
    • English
    • français
    • español
    • русский
  • Login
View Item 
  •   Home
  • AFRICA
  • Kenya
  • Kenya Marine and Fisheries Research Institute
  • Thesis
  • View Item
  •   Home
  • AFRICA
  • Kenya
  • Kenya Marine and Fisheries Research Institute
  • Thesis
  • View Item
JavaScript is disabled for your browser. Some features of this site may not work without it.

Browse

All of AquaDocsCommunitiesPublication DateAuthorsTitlesSubjectsThis CollectionPublication DateAuthorsTitlesSubjects

My Account

LoginRegister

User Information

About AquaDocsPoliciesUser GuidesOther Aquatic Repositories

Statistics

Display statistics

Implication of Heavy Metals Dynamics in Sediment Pore-Water Interface on Macro Benthic Invertebrate Assemblage in Makupa Creek, Mombasa.

  • CSV
  • RefMan
  • EndNote
  • BibTex
  • RefWorks
Thumbnail
Name:
ktf0207.pdf
Size:
1.408Mb
Format:
PDF
Download
Average rating
 
   votes
Cast your vote
You can rate an item by clicking the amount of stars they wish to award to this item. When enough users have cast their vote on this item, the average rating will also be shown.
Star rating
 
Your vote was cast
Thank you for your feedback
Author
Gatagwu, Joel Kareithi
Date
2014

Metadata
Show full item record
Abstract
Coastal systems, particularly lagoons, creeks and estuaries worldwide are experiencing increased pollution from anthropogenic inputs including effluents discharged from urban, industrial, agricultural and atmospheric deposition. This has led to degradation of water and sediment quality leading to loss of biological diversity and problems in human health. Loss of biological diversity is significant for ecological integrity of a system and for aquatic food web it is the cause of poor energy transfer along the trophic levels. Heavy metals in sediments cause adverse lethal and sub-lethal effects on the dwelling community. Benthic macro-invertebrates integrate effects of contaminants over time and are useful indicators of aquatic environment health. The objective of this study was to determine the implication of Fe, Cu, Cd, Zn, Mn and Pb dynamics in pore-water sediment interface and sediments quality on spatial distribution of benthic macro invertebrates in Makupa Creek, Mombasa. The results suggested that sewage effluents from domestic and industrial activities, seepage from solid waste disposal and restricted hydrologic dynamics influences benthic macro-invertebrates and heavy metal distribution in both sediment and pore-water concentrations compared to a pristine coastal area. Analysis of similarity (ANOSIM) revealed no significant difference (ANOSIM Global R: = 0.018, -0.026, -0.196 at p>0.05) and was attributed to common species in Makupa Creek stations. SIMPER analysis revealed limnodriloides barnadi, unidentified nematode, Mesanthula Catenula, Heterodrilus jamiessoni, Olavius geniculatus, Oktedrilus monospermlectus, and unidentified polychaete and Lucifer chacei are the species that contributed highest dissimilarity. High values of metals partitioning coefficients Kd indicated a strong affinity of the metal with sediment and suggested restricted bioavailability of the metal to benthic invertebrates. Conservation of estuarine and coastal wetlands is important because they are areas rich in biodiversity that play a very important role in energy transfers in aquatic ecosystem.
Pages
74pp.
Degree
Bachelors
Publisher or University
Egerton University
URI
http://hdl.handle.net/1834/7258
Collections
Thesis

entitlement

 

DSpace software (copyright © 2002 - 2023)  DuraSpace
Quick Guide | Contact Us | Disclaimer
Open Repository is a service operated by 
Atmire NV
 

Export search results

The export option will allow you to export the current search results of the entered query to a file. Different formats are available for download. To export the items, click on the button corresponding with the preferred download format.

By default, clicking on the export buttons will result in a download of the allowed maximum amount of items.

To select a subset of the search results, click "Selective Export" button and make a selection of the items you want to export. The amount of items that can be exported at once is similarly restricted as the full export.

After making a selection, click one of the export format buttons. The amount of items that will be exported is indicated in the bubble next to export format.