Water Mass Characteristics in the Strait of Malacca using Ocean Data View

Amiruddin, Abd Muhaimin; Ibrahim, Zelina Zaiton; Ismail, Syazwan Aizat

doi:10.3923/rjes.2011.49.58

Cited by 33 publications

(15 citation statements)

References 4 publications

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“…An environmental cline is evident from Singapore in the south through Malaysia in the north (Amiruddin et al, 2011), which could have driven the differences we observe in fungal community composition. Results of the Mantel test and multiple regression on distance matrices support this idea, showing that locations close to one another are more similar in terms of fungal community composition, and those that are separated by increasing geographic distance are less similar.…”

Section: Discussionmentioning

confidence: 83%

Mangrove-Associated Fungal Communities Are Differentiated by Geographic Location and Host Structure

et al. 2019

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Marine fungi on the whole remain understudied, especially in the highly diverse Southeast Asian region. We investigated the fungal communities associated with the mangrove tree Avicennia alba throughout Singapore and Peninsular Malaysia. At each sampling location, we examined ten individual trees, collecting leaves, fruits, pneumatophores, and an adjacent sediment sample from each plant. Amplicon sequencing of the fungal internal transcribed spacer 1 and subsequent analyses reveal significant differences in fungal communities collected from different locations and host structures. Mantel tests and multiple regression on distance matrices show a significant pattern of distance decay with samples collected close to one another having more similar fungal communities than those farther away. Submergence appears to drive part of the variation as host structures that are never submerged (leaves and fruits) have more similar fungal communities relative to those that are covered by water during high tide (pneumatophores and sediment). We suggest that fungi of terrestrial origins dominate structures that are not inundated by tidal regimes, while marine fungi dominate mangrove parts and sediments that are submerged by the incoming tide. Given the critical functions fungi play in all plants, and the important role they can have in determining the success of restoration schemes, we advocate that fungal community composition should be a key consideration in any mangrove restoration or rehabilitation project.

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Section: Discussionmentioning

confidence: 83%

Mangrove-Associated Fungal Communities Are Differentiated by Geographic Location and Host Structure

et al. 2019

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“…The compositional differences in strata create differences in substrate chemistry (e.g., organic, inorganic carbon content, carbon/nitrogen ratio and pH), and these differences can bring about environmental filtering that acts to remove members of the fungal community least suited to the environment (Cline and Zak 2014 ; Goldmann et al 2016 ). Working in tandem with this is an environmental cline of increasing marine water mass salinity and dissolved oxygen with increasing latitude (Muhaimin et al 2011 ). Consequently, locations close to one another are more similar in terms of fungal community composition than those more spatially separated, a result supported by Mantel test and multiple regression on distance matrices.…”

Section: Discussionmentioning

confidence: 99%

Distinct fungal communities associated with different organs of the mangrove Sonneratia alba in the Malay Peninsula

et al. 2020

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Mangrove forests are key tropical marine ecosystems that are rich in fungi, but our understanding of fungal communities associated with mangrove trees and their various organs remains limited because much of the diversity lies within the microbiome. In this study, we investigated the fungal communities associated with the mangrove tree Sonneratia alba throughout Peninsular Malaysia and Singapore. At each sampling location, we collected leaves, fruits, pneumatophores and sediment samples and performed amplicon sequencing of the ribosomal internal transcribed spacer 1 to characterise the associated communities. Results show distinct fungal communities at each sampled location with further differentiation according to the plant part. We find a significant distance decay of similarity, particularly for sediment samples due to the greater variability of sediment environments relative to the more stable fungal habitats provided by living plant organs. We are able to assign taxonomy to the majority of sequences from leaves and fruits, but a much larger portion of the sequences recovered from pneumatophores and sediment samples could not be identified. This pattern underscores the limited mycological research performed in marine environments and demonstrates the need for a concerted research effort on multiple species to fully characterise the coastal microbiome and its role in the functioning of marine ecosystems.

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“…The northern region of the Strait connects with the deeper Andaman Sea and is more saline (>34 PSU) than the middle and southern sectors of the strait (Amiruddin et al, 2011). Major rivers from Sumatra and peninsular Malaysia discharge approximately 19 × 10 10 m 3 of freshwater annually to both sites of the strait, creating hyposaline conditions along most parts of the strait (Hii et al, 2006;Amiruddin et al, 2011). Numerous ecosystems have been reported along the strait, including mangroves, coral reefs, seagrass, and extended mudflats (Yasin et al, 2019).…”

Section: Study Areamentioning

confidence: 99%

“…Two tropical monsoon seasons influence the weather along the Strait of Malacca. These monsoon winds create wetter conditions during the northeast monsoon period and drier conditions during the southwest monsoon period (Hii et al, 2006;Amiruddin et al, 2011).…”

Section: Study Areamentioning

confidence: 99%

The Occurrence and Distribution of Benthic Foraminifera in Tropical Waters Along the Strait of Malacca

et al. 2021

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Foraminifera are shelled single-celled protists that are found in all marine environments. Benthic foraminifera either live in sediments or attach to surfaces on the seafloor. Understanding the distribution and ecological response of benthic foraminifera is crucial, as they can indicate past and current ocean conditions. However, the benthic foraminifera distribution along the busy Strait of Malacca, which connects the Indian Ocean (north) to the Java Sea (south), is undersampled. In this study, we collected 24 surface samples from the northern Strait of Malacca to understand the distribution of foraminifera assemblages in shallow tropical waters. A total of 49 species of benthic foraminifera were identified. Calcareous hyaline species dominated the assemblages, with an extremely low occurrence of calcareous porcelaneous species. The common calcareous hyaline taxa were Asterorotalia pulchella, Pseudorotalia schroeteriana, Discorbinella bertheloti, Ammonia tepida, and Heterolepa praecincta. Cluster analysis categorised the foraminiferal assemblages into three major groups. The first cluster (Group A) consisted of a more diverse assemblage of hyaline and agglutinated species that inhabited a mean water depth of 45 m. The second cluster represented a population that inhabited deeper water environments (average water depth of 59 m). Finally, the third cluster (Group C) consisted of a foraminifera assemblage that inhabited shallow coastal environments (average depth of 22 m) with higher organic matter enrichment. The multivariate canonical correspondence analysis (CCA) showed that the foraminiferal assemblages reflected the shallow to deep water transition in the Malacca Strait. Water depth, which defines the depositional environment, had a greater influence on foraminifera distribution here than organic matter and salinity.

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Water Mass Characteristics in the Strait of Malacca using Ocean Data View

Cited by 33 publications

References 4 publications

Mangrove-Associated Fungal Communities Are Differentiated by Geographic Location and Host Structure

Mangrove-Associated Fungal Communities Are Differentiated by Geographic Location and Host Structure

Distinct fungal communities associated with different organs of the mangrove Sonneratia alba in the Malay Peninsula

The Occurrence and Distribution of Benthic Foraminifera in Tropical Waters Along the Strait of Malacca

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