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 118
- Downloads 0
Free Radicals Scavenging and Neuroprotective Effects of Ethanolic Leaf Extract of Combretum zenkeri Leaf
Combretum zenkeri is a small tree found in the tropical West Africa that has been applied by locals in the treatment of arthritic and other inflammatory diseases. This study investigated the free radical scavenging activ...
Nutritional Composition and Antioxidant Activity of Leaves and Rhizomes of Bemban (Donax grandis) Grown under Glasshouse Conditions
Aims: The aim of this study is to find out the results of proximate analysis, antioxidant activity and mineral composition of leaves and rhizomes of Donax grandis (locally known as Bemban), an underexploited herbaceous p...
Oryctes owariensis Larvae as Good Alternative Protein Source: Nutritional and Functional Properties
In Côte d’Ivoire, the larvae of Oryctes owariensis are prized and widely consumed as alternative protein source. The present study was aimed at evaluating the nutritional and functional properties of the larva flour for...
Variation of Mineral Micronutrient Elements in Robusta Coffee (Coffea canephora Pierre ex A. Froehner) As Measured by Energy Dispersive X -Ray Fluorescence
Aim: Robusta coffee growing countries of the world such as Uganda, have experienced a decline in market prices since 2002 due to changed consumer preferences for other beverages. In Uganda, where Robusta coffee is the ma...
Antimicrobial Activity of Potato Rhizospheric Pseudomonas chlororaphis subsp. aureofaciens from Sétif Algeria
Aims: This study was assessed to demonstrate the antimicrobial activity in vitro of an identified fluorescent Pseudomonas strain characterized for its capacity to produce phenazine compounds. Methodology: First Pseudomon...