Centennial Ecological Shifts in Western Jakarta Bay: Insights from Short Core Investigation | Chapter 7 | Current Research on Geography, Earth Science and Environment Vol. 2

 

Hypoxia is a widespread aquatic problem caused by a combination of natural and anthropogenic factors. Eutrophication poses a significant threat to the coastal waters, triggering hypoxia that has a twofold impact on aquatic ecosystems. Firstly, it reduces oxygen availability for biotic respiration, and secondly, it enhances the toxicity of certain minerals, further exacerbating the environmental stress. Coastal areas, such as Jakarta Bay, have been facing significant environmental pressures due to development intensity and various scales of human activities for more than a century. This study investigated the hypoxic condition in the western part of Jakarta Bay using benthic foraminifera (Ammonia and Elphidium) as proxies, the AE-index. Sampling was conducted in 2016 using a short core sampler, and Pb-210 scanning was used to determine the age of sediment deposition. The results revealed a notable increase in the AE-index from the late 1970s to early 1990s, coinciding with a rise in concentrations of four metals: Cu, Pb, Ni, and Zn. The main factor contributing to the increase in environmental stress in Jakarta coastal waters is the change of Jakarta’s governance status to a Special Capital Region led to a population surge and accelerated regional development. This research reveals evidence of periodic hypoxia in the western part of Jakarta Bay over several centuries, attributed to the rapid development along the northern coast of Jakarta and its surrounding regions.

 

 

Author(s) Details

Ricky Rositasari
Research Center for Oceanography, National Research and Innovation Agency, Jl. Pasir Putih I, Ancol Timur, Jakarta Utara, 1440, Indonesia.

 

Fitri Budiyanto
Research Center for Oceanography, National Research and Innovation Agency, Jl. Pasir Putih I, Ancol Timur, Jakarta Utara, 1440, Indonesia.

 

Reza Cordova
Research Center for Oceanography, National Research and Innovation Agency, Jl. Pasir Putih I, Ancol Timur, Jakarta Utara, 1440, Indonesia.

 

Rachma Puspitasari
Research Center for Oceanography, National Research and Innovation Agency, Jl. Pasir Putih I, Ancol Timur, Jakarta Utara, 1440, Indonesia.

 

Please see the book here :- https://doi.org/10.9734/bpi/crgese/v2/5296