Spatio-temporal occurrence and distribution of copepod in the Karnaphuli river estuary, Bangladesh
Journal Title: Journal of Biodiversity and Environmental Sciences (JBES) - Year 2017, Vol 10, Issue 1
Abstract
A total of 25 major taxa of zooplankton were identified from the Karnaphuli River of which 23 taxa during monsoon, 20 taxa during post monsoon and 20 taxa during pre-monsoon. The sampling sites count started from the Karnaphuli River mouth towards the upstream. The seasonal highest peak of zooplankton recorded 423.54 indivs/m3, 654.4 indivs/m3 and 437.39 indivs/m3 accordingly during monsoon, post-monsoon and pre-monsoon season at site-6, site-4 and site-6 respectively. Copepod occurred at all sites as a dominating species and contributed 40.18% annually. The seasonal highest peak of copepod was 83.02% at site-2 during monsoon, 89.39% at site-4 during post-monsoon and 36.82% at site-1 during pre-monsoon season. Copepod exhibited a weak positive linear relationship with dissolved oxygen; a moderate negative linear relationship with air temperature, water temperature, pH, salinity and a weak negative linear relationship with TDS. In this study copepod showed euryhaline nature. As a consequence, their abundance increased with decreasing salinity and maximum was found in the freshwater region.
Authors and Affiliations
Abu Sayeed Muhammad Sharif, Md. Shafiqul Islam, Md. Simul Bhuyan
Keywords
Related Articles
- EP ID EP39028
- DOI -
- Views 204
- Downloads 0
Reptile Diversity in Mt. Matutum Protected Landscape, South Cotabato, Philippines
Reptiles are highly diversewith high percentage of endemism in the Philippines. However, reptile diversity in Mindanao, the second largest island in the country,is poorly known. To determine the species richness, diversi...
Molecular taxonomy and phylogeny of Silene species (Caryophyllaceae) using DNA-based markers
DNA markers have provided valuable tools in various analyses ranging from phylogenetic analysis to the positional cloning of genes. Silene is a genus of flowering plant in the family Caryophyllaceae. This study compare...
Assessment examine of the modeling ability of ORYZA2000 for rice cultivars in Guilan province (Iran)
Various crop growth simulation models exist for rice but thorough validation and evaluation reports are scarce. We present the model ORYZA2000, which simulates the growth and development of rice under conditions of pot...
Salicylic acid affects antioxidant system of some grape cultivar under cold stress conditions
Salicylic acid (SA) is a plant growth regulator mediates and ameliorates damages caused by cold stress in plant cells. To investigate the effects of SA foliar spray on soluble proteins content, antioxidants enzymes acti...
Medicinal folk recipes and conservation status of gymnospermic flora for livelihood security of Malam Jabba Valley, Hindu Kush Range, Swat, Pakistan
The Malam Jabba Valley, district Swat has a diverse flora with the spectacular scenic beauty and unspoilt nature that attracts tourists across the globe and makes the valley a paradise for the nature and adventure lovers...