Morphometry Dynamical of Siombak Lake, Medan Indonesia

Muhtadi, ‪Ahmad; Harahap, Zulham Apandy; Leidonald, Rusdi

doi:10.20884/1.oa.2017.13.2.174

Cited by 12 publications

(20 citation statements)

References 7 publications

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“…In addition to Mytilidae, Cerithidae is a native mangrove gastropod (estuary) that is frequent and abundant in the mangrove ecosystem (estuary) (Budiman 1991). Cerithidae molluscs were found throughout the year (Tables 4 and 5) due to the characteristics of Lake Siombak waters, which are influenced by tides from the Belawan Sea (Malacca Strait) ) (Muhtadi et al 2017), and strong currents from tides can affect the distribution and movement of molluscs in the water (Hummel et al 2016).…”

Section: Spatial and Temporal Distributionmentioning

confidence: 99%

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Biological Conservation of Molluscs Based on Spatial and Temporal Distribution in Tropical Tidal Lake, Medan-Indonesia

et al. 2020

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The tidal lake ecosystem is formed by the flow of the Belmera River and seawater through a tidal process along a course of 12 km from Belawan (Malacca Strait). This lake has a tidal lake that has the characteristics of fresh water to brackish water and Mollusc communities from freshwater species to brackish water species. This study was performed to develop a mollusc conservation strategy based on the spatial and temporal distribution of Mollusca in the tides. The study was conducted from September 2018-August 2019. Mollusc samples were taken every month at high tide and low tide using a Petersen grab tool. Nine Mollusca species, consisting of three bivalves and six gastropods, were identified. Polymedosa expansa is a mollusc species that is considered for conservation. The population size of P. expansa is small, and its distribution is limited to the northern lake. P. expansa was found only in September at high tide and in December at low tide. Competition among Mollusca and habitat availability are obstacles to the survival of P. expansa. The habitat of P. expansa is mangrove, and therefore a conservation approach was carried out through improvement of mangrove quality.

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Section: Spatial and Temporal Distributionmentioning

confidence: 99%

“…Moreover, the lake is still affected by tides. The tides affect the difference in daily water level elevation and month periods (Muhtadi et al 2017;Muhtadi et al 2020a). Muhtadi et al (2020a) reported that the water level elevation ranges from −0.43 to 2.66 m during rains and −0.04 to 2.23 m during the dry season.…”

Section: Introductionmentioning

confidence: 99%

Biological Conservation of Molluscs Based on Spatial and Temporal Distribution in Tropical Tidal Lake, Medan-Indonesia

et al. 2020

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“…This study was then conducted in the Belawan estuary by observing the high and low tide conditions. The Belawan River estuary is a special and unique ecosystem with brackish waters influenced by tides (Muhtadi et al 2017;2020a). Lake Siombak is one of the tropical tidal lakes located on the coast of Medan City, North Sumatra Province, Indonesia.…”

Section: Introductionmentioning

confidence: 99%

Spatial distribution management of Crustacea (Decapoda) based on conservation in tropical tidal lake

Muhtadi

Yulianda²,

Boer³

et al. 2022

Biodiversitas

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Abstract. Muhtadi A, Yulianda F, Boer MF, Krisanti M. 2022. Spatial distribution management of Crustacea (Decapoda) based on conservation in tropical tidal lake. Biodiversitas 23: 4064-4072. Siombak Lake has a unique biological system impacted by high and low tides. Crustaceans (Decapoda) found in this lake are predicted to establish distinctive communities due to their interaction with two biological systems of seawater and freshwater. Therefore, this study aimed to determine the characteristics and distribution of crustacean communities in Siombak Lake, which were influenced by high and low tides. Crustacean samples were taken and observed every month at high and low tides with traps from September 2018 to August 2019. The crustaceans discovered included 5 families and 18 species, with 13 crabs and 5 shrimp. The communities' distribution is extremely dynamic, as seen by the emergence of mangrove crabs at high tide and fiddle crabs during low tide. The crustacean communities are more influenced by tidal ecology, characterized by a higher abundance of individuals at high tide. Furthermore, crustacean density fluctuates throughout the year and reaches the highest in March with 8679 ind/100m2. Penaeid shrimp are always found at high and low tides, dominated by Parapenaeopsis coromandelica, while mangrove crabs are only found at high tide. Therefore, efforts are required to conserve mangrove crabs and enhance their habitats for sustainable usage.

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“…Although it is quite far from the sea (as far as 7.5 km from the Belawan Sea, the Malacca Strait), the tidal influence is very strong in Lake Siombak. This can be seen from the elevation of sea levels that varies according to tidal fluctuations in Belawan with a span of 2 hours in Lake Siombak (Muhtadi et al 2017a). Lake Siombak was originally a dredged area for the construction of the Belawan Medan Tanjung Morawa Toll Road (Belmera) in the mid of 1980s (Muhtadi et al 2016).…”

Section: Introductionmentioning

confidence: 99%

“…Lake Siombak was originally a dredged area for the construction of the Belawan Medan Tanjung Morawa Toll Road (Belmera) in the mid of 1980s (Muhtadi et al 2016). However, over time the area was filled with water and formed a large puddle reaching 28 hectares (Muhtadi et al 2017a).…”

Section: Introductionmentioning

confidence: 99%

The dynamics of the plankton community on Lake Siombak, a tropical tidal lake in North Sumatra, Indonesia

et al. 2020

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Abstract. Muhtadi A, Pulungan A, Nurmaiyah, Fadlhin A, Melati P, Sinaga RZ, Uliya R, Rizki M, Rohim N, Ifanda D, Leidonald R, Wahyuningsih H, Hasani Q. 2020. The dynamics of the plankton community on Lake Siombak, a tropical tidal lake in North Sumatra, Indonesia. Biodiversitas 21: 3707-3719. The tidal lake is a very dynamic estuary ecosystem and very vulnerable to environmental stresses and disturbances. Plankton is an aquatic organism that is very easily affected by environmental pressures and disturbances. This study aimed to reveal the phenomenon of plankton dynamics in tropical tidal lakes in Indonesia. The study was conducted at Siombak Lake from September 2018 to August 2019. Data were collected at high and low tides every month during the full month. The data analysis included plankton abundance, diversity index, and the relationship between water quality and plankton with PCA and succession analysis. The results showed that in Siombak Lake was found 66 genera which consisted of 54 phytoplankton genera and 12 zooplankton genera. Plankton abundance is higher in parts of the lake (stations 1-8) than in the river (stations 9-11) at both high and low tide. Temporally it shows that plankton abundance is higher in the rainy season (Feb-Aug, outside May) than in the rainy season (Sep-Jan, and May). Spatially, plankton in Siombak Lake at high tide is more influenced by TSS, phosphate, and salinity, while at low tide, it is influenced by TSS, Water transparency, BOD, silicate, salinity, and dissolved oxygen. Temporally, plankton in Siombak Lake at high tide is more influenced by salinity, conductivity, Debit, TSS, and salinity, while at low tide, it is influenced by salinity, conductivity, turbidity, TSS, TDS, DO, BOD, and COD. Based on the plankton Frontier succession graph, it shows that Siombak Lake is included in stage 1 and stage 2. Stage 1 occurs before the rainy season (August-September) and the peak of the dry season (March-April).

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Morphometry Dynamical of Siombak Lake, Medan Indonesia

Cited by 12 publications

References 7 publications

Biological Conservation of Molluscs Based on Spatial and Temporal Distribution in Tropical Tidal Lake, Medan-Indonesia

Biological Conservation of Molluscs Based on Spatial and Temporal Distribution in Tropical Tidal Lake, Medan-Indonesia

Spatial distribution management of Crustacea (Decapoda) based on conservation in tropical tidal lake

The dynamics of the plankton community on Lake Siombak, a tropical tidal lake in North Sumatra, Indonesia

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