Impact of mangrove and seagrass ecosystem on marine productivity of Pramuka Island, Seribu Islands, Indonesia

Abstract

The connectivity between seagrass and mangrove ecosystems has synergistic benefits of conserving the land-sea ecosystems of the small islands. The physicochemical properties of the two ecosystems lead to the success of the habitat of the interconnected zone. This study aimed to analyze the physicochemical factors in the mangrove and seagrass ecosystems on Pramuka Island and understand the factors influencing the phytoplankton production of small island coastal ecosystems. Sediment and water collection were carried out on Pramuka Island, Indonesia, to measure physicochemical parameters. Mangrove and seagrass ecosystems have the highest DO, temperature, and pH values. The phytoplankton counts showed significant variation between the sampling sites with a predominance of the class Cyanophyceae. The estimated primary productivity of chlorophyll-a indicated that its concentration was higher in mangroves than in seagrass. A similar trend was observed in nutrient loads and dissolved inorganic nitrogen. Results of the present study clearly showed that an increased concentration of dissolved inorganic nutrient influence the concentration of chlorophyll-a as an indicator of primary productivity. These findings will provide a preliminary analysis of the physicochemical conditions and productivity on Pramuka Island.

Community Structure and Health Status of Mangrove Ecosystem in Anambas Islands Marine Tourism Park, Indonesia

“…Mangroves can also prevent sedimentation by binding dissolved sediment from rivers and suppressing the rate of seawater intrusion toward the mainland [6]. In addition, mangrove ecosystem has the function as a carbon sink and storage [7] [43]. The potential of carbon storage can be analyzed in the stand structure of mangroves and sediments.…”

Mangroves in a transforming world : Biogeochemical interactions, global change drivers, and innovative mitigation strategies

“…Carbonate chemistry and pH Mangrove, seagrass, coral (Akhand et al, 2021;Camp et al, 2016;George & Lugendo, 2022;Macklin et al, 2019;Middelburg et al, 1996;Saderne et al, 2019) Mangrove, seagrass (Salma et al, 2022;Sandoval-Gil et al, 2016) Mangrove, coral (Camp et al, 2019;Yates et al, 2014a) Seagrass, coral (Unsworth et al, 2012) Mangrove (Chen et al, 2021;Sippo et al, 2016) Seagrass (Barry et al, 2013;Bergstrom et al, 2019;Cyronak et al, 2018;Koweek et al, 2018;Ow et al, 2016;Ricart et al, 2021)…”

“…Furthermore, a study of six different locations along the Australian coast by Sippo et al (2016) demonstrated that mangroves exported DIC and alkalinity to adjacent waters (Figure 2.4) thus creating a buffer against ocean acidification Water pH and alkalinity exhibit high variability within seasons, days, and even hours due to tidal variation, temperature, light intensity, and local hydrodynamic conditions, as well as biotic factors (Cyronak et al, 2018;Saderne et al, 2019). Salma et al (2022) found no significant differences in water pH between mangrovedominated sites, seagrass-dominated sites, and sites where mangroves and seagrass co-occur. Consequently, the results regarding the relative contribution of crossecosystem connectivity to ocean acidification buffering are often contradictory and highly dependent on local conditions.…”