Environmental and vertical distribution study of zooplankton in Al-Diwaniyah River, Iraq
Journal Title: Journal of Biodiversity and Environmental Sciences (JBES) - Year 2017, Vol 10, Issue 6
Abstract
The present study was conducted to determine the occurrence and vertical distribution of zooplankton community in the Al-Diwaniyah River during the period from the spring of 2015 to the winter of 2016. Three stations were chosen along the course of the river. The samples were collected from the middle-stream of the river at two depths 30cm and 60cm. Some physical and chemical properties of the water were studied such as: Air temperature, water temperature, pH, turbidity, light penetration, water flow and dissolved oxygen, also the study included some biological aspects which represented by a qualitative and quantitative study of zooplankton. The results showed that the total identified zooplankton taxa in the 30cm depth was 36, 45, 36 taxa at study stations respectively. While in the depth 60cm the study identified at first station was 50, 59, 34 taxa at study stations respectively. The dominance groups were Rotifera, Copepoda followed by Cladocera. A total number of zooplankton varied in depth 30cm and 60cm from 633 to 3367Ind./m3 and 2033 to 6933Ind./m3, respectively. Also the current study recorded two peaks of zooplankton community bloom, the first once in spring and the other in autumn. Finally it was concluded from the current study that the properties of water specially water flow velocity effects on the occurrence and vertical distribution of zooplankton, which are depending on sources and distribution of food, also it was founded that the number of the taxa and the total density in the depth 60cm was higher than its in the depth 30cm.
Authors and Affiliations
Khitam A. Merhoon, Muhanned R. Nashaat, Foad M. Alkam
Keywords
Related Articles
- EP ID EP39165
- DOI -
- Views 184
- Downloads 0
Transhumance and conflicts management on Agonlin plateau in Zou department (Benin)
For thirty years, Agonlin region in Zou department has been subject to extensive movements of national and cross-border transhumance every year: it is a seasonal movement of flocks and their shepherds in search of water...
Morphological and biochemical study of Bulgarian species Agaricus bohusi
Тhe study is first report on the biochemical composition of Agaricus bohusii Bon. The results obtained contribute to the knowledge of the chemical composition of mushrooms belonging to the Agaricus genus. There has been...
Biodiversity of the Macroinvertebrates in the Southern Iraqi Marshes, with a special reference to Oligochaeta
Despite the importance of macroinvertebrates in the dynamics of aquatic ecosystems, however, a little work has been conducted on this group in Iraq. The aim of the present paper is to investigate the distribution and di...
Assessment of genetic diversity in sunflower (Helianthus annus L.) genotypes using agro-morphological traits
Selection of genotypes based on high value of heritability and forecasted genetic conditions would be an effective method for improvement of sunflower lines.The present investigation was carried out to (i) study of some...
Assessment of correlation and path analysis in wheat under drought stress
The study of relationships between plant traits particularly grain yield and its components has resulted in the selection of a components which contribute to an increase in grain yield. The objective of the present stud...