Spatial and Temporal Dynamics of Zooplankton Community Structure in Jakarta Bay

Abstract

The dynamics in zooplankton abundance were regulated by changes in water physical-chemical parameters and interaction with biotic factors. In this research we examined the relationship between zooplankton community dynamic and important biotic factors, such as predation and food availability, in Jakarta bay. Plankton samplings were done in 10 sampling stations in Jakarta bay, from July to November 2009. Zooplankton samples were collected using horizontal towing method with NORPAC plankton net (mesh size 300 µm). Salinity, water depth, water temperature, and water transparency were measured. Phytoplankton samples were also collected with the same method as zooplankton, using Kitahara plankton net (mesh size 80 µm). Zooplankton taxas were grouped into two groups, the prey and predatory zooplankton. The results showed that there were two different patterns in zooplankton groups dynamic i.e., the single and double peak. The abundance peak in most zooplankton groups, such as copepods, cirripeds, luciferids, and tunicates, were induced by the high food availability during the phytoplankton bloom in August. The high abundance of prey zooplankton groups in August was responded by the predatory zooplankton groups, resulting in high abundance of predatory zooplankton in adjacent month. The high abundance of ctenophores and chordates (fish larvae) were suggested as the main factor for the low abundance of other zooplankton in September. Physical and chemical factors were not the regulating factors due to the stability of those factors during this research period. Thus we concluded that food availability and predator-prey interaction were the main factors which regulate zooplankton community dynamics in Jakarta bay.

Vertical Distribution of Diatoms Analysis to Determine the Condition of Rawapening Lake in the Past through Cluster Analysis with the Bray-Curtis Model

“…The DO content of water >5 mg/L is good for phytoplankton and zooplankton [47]. This is in line with the opinion of Damar et al [48], that the high abundance of phytoplankton can contribute to high levels of dissolved oxygen, which is the result of the photosynthesis process.…”

Composition, Abundance, and Distribution of Phytoplankton at Fitu Waters Ternate of North Maluku in Indonesia

“…Water quality parameters are in the optimal range, particularly temperature (29.3 o C), salinity (30ppt), and pH (7.7) (Table 4). For the growth rate of phytoplankton, some references stated the optimum salinity is 25 -32 ppt (Nybakken, 1992), the optimal temperature is 20 -32 o C (Effendi, 2003; Kusumaningtyas et al, 2014;Kadir et al, 2015), and the optimal pH value range is 7 -8.5 (Berge et al, 2010).…”

The Relationship between Plankton Abundance and Abiotic Parameters in the Downstream Section of the Musi River, Palembang

“…Additionally, it was found that water temperature ranged from 34.33 to 38.67 0 C; the highest temperature was in the palm oil mill. Water temperature for phytoplankton and zooplankton ranged, respectively, from 25-30 0 C and 15-35 0 C ( Kadir et al, 2015). The findings showed a temperature distribution which exceeded deviation 3 and was heterogeneous; the condition was not optimum temperature for phytoplankton growth but on the other hand, it was good for zooplankton growth.…”