Bioecology of Sediment-Polychaete in Estuarine Subtidal Habitat on Bonny River, Nigeria
Journal Title: Annual Research & Review in Biology - Year 2015, Vol 7, Issue 3
Abstract
Midchannel subtidal Polychaete Fauna were collected at the Bonny-estuary and analysed for their composition and abundance in relation to biotic and abiotic factors that are associated with life history strategies through a twelve-month cycle. The diversity index of Shannon-Weiner (0.637 to 2.252) showed that monthly diversity ranges from low to moderate, while the diversity index of Margalef (0.558 to 2.667) showed a moderate to high species diversity. Two Polychaete associations were identified -the generalists made up of 12 species with frequent occurrences and the specialists made up of 13 species with single month occurrences. The species turnover among the specialists with single month occurrences seems to be governed by environmental processes. In contrast, the generalists with the ability to recur throughout the sampling period seem to be less restricted by the prevailing environmental conditions. A positive correlation was observed between Polychaete abundance and silt/clay (p>0.05 r = 0.5429) and organic matter (p>0.05 r = 0.8857), which shows that both organic matter and silt/clay were important in promoting the abundance and diversity of the Polychaete fauna in the study area. The study provides evidence that variation in occurrence of the Polychaetes operates on a range of scales with differing responses to abiotic variables. This should be considered in environmental impact assessments and monitoring studies to fully account for observed distribution.
Authors and Affiliations
John Onwuteaka
Keywords
Related Articles
- EP ID EP353451
- DOI 10.9734/ARRB/2015/18321
- Views 96
- Downloads 0
Physiological Reaction of Erythrocytes’ Micro Rheological Features in Newborn Piglets on Unfavourable Environmental Factors
The aim of research is to find out peculiarities of erythrocytes’ micro rheological features in piglets having undergone the impact of the most abundant unfavourable factors of the environment. We observed 78 newborn pig...
Retrospective Study of 33 Dogs Diagnosed with Osteosarcoma (OSA) by Fine Needle Aspiration Cytology (FNAC) at FMVZ Vet Hospital, UNESP-Botucatu, SP
Aim of Study: Evaluate cases of dogs with osteosarcoma, when diagnoses using FNAC. Study Design: A retrospective study, from archive at Veterinary Hospital, selected 33 dogs of different races, 2...
Molecular Detection of New Delhi Metallo Beta Lactamase 1 (NDM-1) Producing Bacterial Isolates in Kano- Northwestern Nigeria
New Delhi Metallo Beta Lactamase 1 (NDM-1) is an enzyme with zinc ions at its active site that cleaves the amide bond of β-lactam ring and provides resistance against major classes of β-lactam antibiotics. The molecular...
Cardioprotective Effect of Scleria lithosperma on Doxorubicin-induced Cardiotoxicity in Wistar Albino Rats
Aim: The present study was designed to evaluate the protective effects of ethanolic extract of whole plant of Scleria lithosperma (EEWSL) against doxorubicin-induced cardiotoxicity in rats. Methodology: EEWSL was orally...
Effect of Aquaculture Feeding Practices on Commercial Fish Farming in Rawalpindi District, Pakistan
A field survey was carried out in three tehsils namely Rawalpindi, Gujar khan and Kahuta) of Rawalpindi district. A predefined questionnaire was used to gather the information. In the studied farms the average stocking...