Eutrophication in a tropical estuary: Is it good or bad?

Abstract

Coastal eutrophication is defined as the increase of rate of organic supply into an estuary. In the recent global discussion, eutrophication is seen as a negative situation, in fact, it has positive impacts such as increase in primary production which lead to the increase of fisheries production and hence, community income. This paper promotes a simple diagram called eutrophication-benefit curve which correlates between levels of eutrophication and its benefits to both ecological and economical aspects. In the beginning of eutrophication process, environment gets benefit from the increase of the nutritional state of the water which leads to the increase of primary production and fisheries production. This is obvious in the comparison between northern and southern coast waters of Java Island, showing a higher primary production and phytoplankton biomass and hence fisheries production in the northern coast waters of Java compared to those of the southern coast waters of Java. However, the rapid increase of eutrophication level of the northern coast waters of Java Island causes eutrophication negative effects such as oxygen depletion, algae bloom and disturbance of coral reef ecosystems. This paper shows the optimum level of eutrophication level that can give benefit to both ecological and social environment.

An ecological response index for simultaneous prediction of eutrophication and metal pollution in Domat Al-Gandal lake, Saudi Arabia.

“…Eutrophication and an overall decline in water quality can result from a lake's nutrient burden increasing (El-Serehy et al, 2018;Yan et al, 2019;Damar et al, 2021;Acuña-Alonso et al, 2022;Chen et al, 2022;Hu et al, 2022;Lin et al, 2022a;Zahedi et al, 2022). The seasonal fluctuations of nitrite in the studied area were nearly similar between 10 and 11 µg/L.…”

Variabilitas spasial karakteristik tutupan karang di perairan kecamatan Kepulauan Seribu Utara, DKI Jakarta

“…Kualitas air di wilayah perairan Kepulauan Seribu juga dipengaruhi oleh masa air berbahan organik tinggi dari Teluk Jakarta. Akibat yang muncul berupa pengaruh bahan organik yang kronis bagi terumbu karang dan menyebabkan munculnya dominasi algae (Damar et al 2021), berbagai penyakit dan virus (Baum et al 2016) dan penurunan kualitas air pada berbagai komunitas biota karang Kepulauan Seribu (Cleary et al 2016).…”

Comprehensive analysis of harmful algal blooms in indonesia: from occurrence to impact

“…Increasing inputs of phosphorus (P) and nitrogen (N) are often the leading cause of coastal eutrophication [23]. Nowadays, red tide or algal blooms are often associated with coastal eutrophication in Jakarta Bay [24][25][26][27]. The leading cause of the bloom of the phytoplankton population in Jakarta Bay is the eutrophic condition or nutrient enrichment [21,22].…”