Seasonal variations in physico-chemical parameters of Buleji and Paradise Point rocky shores at Karachi coast
Journal Title: International Journal of Environment and Geoinformatics - Year 2018, Vol 5, Issue 2
Abstract
The aim of the current study was to determine common physico-chemical parameters (salinity, temperature, chlorophyll-a, dissolved oxygen, and pH) of coastal water of two rocky shores from Buleiji and Paradise Point rocky shores at Karachi monthly basis, from November 2007 to April 2009. The range of air and surface water temperature of Buleji varies from 19 ºC to 30 ºC and 21ºC to 29 ºC, respectively. Almost similar air temperature and seawater temperature (19º to 29º C) were recorded at Paradise Point. Salinity ranged from 35 to 39 ‰ at Buleji while it ranged between 35 to 40 ‰ at Paradise Point. The lowest concentrations of dissolved oxygen was recorded in November’07 and November’08 at both sites, at Buleiji which were 1.6 mg/L and 1.7 mg/L while at Paradise Point it was 1.8 mg/L and 1.7 mg/L, respectively. The pH value ranged from 7.0 to 8.3 at Buleji and from 7.5 to 8.4 at Paradise Point. The concentrations of chlorophyll-a were between 1.2 and 3.7 µg cm-2 at Buleji while it ranged from 0.9 to 3.3 µg cm-2 at Paradise Point. Results showed that the obtained values of temperatures, salinity, pH and chlorophyll-a are favorable for the continued survival of marine biota but the values of dissolved oxygen were found to be below 4 mg/L which are not suitable for various species. Prolonged periods of minimal dissolved oxygen directly upset larval stages of numerous marine organisms. In Karachi coastal areas, seasonal accessibility of surface water is very responsive to the monsoon climate and physiography of coastal belt. These concerns were used to inform the common people and decision-makers about the state of the coastal environments. To protect these dynamic significant habitats, the government organizations and researchers should work with appropriate consideration.
Authors and Affiliations
Fatima Hayat Shaheen Zafar, Zarrien Ayub, Aasia Karim, Mohammad Zahid, Levent Bat
A GIS Approach to Evaluate Infrastructure Variables Influencing the Occurrence of Traffic Accidents in Urban Roads
Several studies worldwide have been developed that seek to explain the occurrence of traffic accidents from different perspectives. The analyses have addressed legal perspectives, technical attributes of vehicles and inf...
The need for ecosystem-based coastal planning in Trabzon city (TR)
Coastal urbanization problem was emanated from willingness of coastal living. Urban sprawl is one of the most important coastal problems in Turkey as it is in Trabzon city which is known for its natural and historical as...
Mapping Drought Hazard Using SPI index And GIS (A Case study: Fars province, Iran)
Drought is defined as the continuous and abnormal moisture deficit. The term of continues means continuation of deficit and the term abnormal means deviation of favorite index of natural condition from the mean. In every...
An Algorithm Approach for the Analysis of Urban Land-Use/Cover: Logic Filters
Accurate classification of land-use/cover based on remotely sensed data is important for interpreters who analyze time or event-based change on certain areas. Any method that has user flexibility on area selection provid...
Natural and anthropogenic threats to the cultural tourism potential of Kıyıköy
This paper discusses the cultural tourism potential of Kıyıköy and the natural and anthropogenic threats to extant cultural tourism values such as the Kıyıköy castle walls, Aya Nicholas Monastery and historical Kıyıköy h...