Odonata of Sungai Bebar, Pahang, Malaysia, with four species recorded for the first time from mainland Asia

Dow, Rory A.; Ng, Yong Foo; Choong, Chee Yen

doi:10.11609/jott.o3041.2417-26

Cited by 3 publications

(3 citation statements)

References 7 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…However, our study suggested that Odonata communities supported by oil palm waterways are impoverished in comparison to natural forests. Prior to forest conversion, as many as 78 Odonate species from 12 families were likely to exist in the study sites (Norma-Rashid et al, 2001), with Dow et al (2012) reporting 50 Odonate species from nine families in comparable natural peat swamp forest on the east coast of Peninsular Malaysia. Despite considerably reduced diversity in the oil palm smallholding waterways studied here, Anisopteran diversity was still appreciable, though characterized by more tolerant, generalist species compared to those recorded from undisturbed swamp habitats.…”

Section: Discussionmentioning

confidence: 99%

Physicochemical Properties as Driver of Odonata Diversity in Oil Palm Waterways

Ishak

Norhisham

Thomas

et al. 2021

Front. For. Glob. Change

View full text Add to dashboard Cite

Large-scale oil palm agriculture has caused deforestation in the tropics, but also degrades stream water quality and reduces aquatic biodiversity. Though the outcomes of industrial-scale oil palm plantations for biodiversity have been explored extensively, the consequences of small-scale oil palm agriculture for freshwater macroinvertebrate fauna are poorly understood. Here, we explored the impacts of small-scale oil palm agriculture on aerial adult Odonata (the dragonflies and damselflies), which, due to their inherent sensitivity to habitat degradation, represent useful indicators of wider ecosystem health. We surveyed riparian corridors of man-made waterways in natural habitats converted into agricultural lands in both peat swamp and mangrove forest, comprising a total of 60 sampling units across a region of Peninsular Malaysia where such small-scale agricultural practices are widespread. We hypothesized that physicochemical water quality of oil palm waterways together with riparian vegetation influence Odonata species richness and composition. Our results revealed that Odonata species richness increased with dissolved oxygen, water temperature and vegetation cover, but decreased with water level, pH, and total dissolved solids. Species composition was influenced by both dissolved oxygen and pH. The present study provides valuable insights into the effects of small-scale oil palm agriculture for water quality of associated aquatic habitats, and subsequent responses of adult Odonata. Therefore, smallholders should reduce the use of chemical pesticides and fertilizers to improve the conservation value of oil palm waterways for both Odonata and aquatic fauna more generally, in order to be certified as biodiversity-friendly agriculture.

show abstract

Section: Discussionmentioning

confidence: 99%

Physicochemical Properties as Driver of Odonata Diversity in Oil Palm Waterways

Ishak

Norhisham

Thomas

et al. 2021

Front. For. Glob. Change

View full text Add to dashboard Cite

show abstract

“…We tested relationships between assemblage pattern and disturbance attributes (time since disturbance, frequency, and intensity of disturbance) using a linear model for species richness and generalized linear models (binomial family, logit link) for proportions of Less than one year since the last disturbance Zygoptera, specialists, and Borneo's endemic species (classification according to Orr 2003, andDow et al 2012). Proportions for each site were weighted by total numbers of species in the GLM.…”

Section: Discussionmentioning

confidence: 99%

“…However, this information may be distorted, because many odonate species previously considered as Borneo endemic, e.g. Tyriobapta laidlawi Ris, 1919, Brachygonia ophelia Ris, 1910, Elattoneura coomansi Lieftinck, 1937, and Elattoneura longispina Lieftinck, 1937, were also found outside Borneo (Dow et al 2012).…”

Section: Discussionmentioning

confidence: 99%

Aquatic insects indicate terrestrial habitat degradation: changes in taxonomical structure and functional diversity of dragonflies in tropical rainforest of East Kalimantan

et al. 2012

View full text Add to dashboard Cite

As a group of freshwater invertebrates, dragonflies (Odonata) are commonly used as ecological indicators of freshwater ecosystems. Despite earlier studies suggesting that adult odonates may be good indicators for complex changes in a landscape, the utility of odonates as suitable indicators to indicate health of non-aquatic (forest) habitats remains poorly understood. This study analyses the adult dragonfly assemblage pattern against spatial and temporal disturbance characteristics in Indonesia's Sungai Wain Protection Forest. The core of this reserve comprises one of the few remaining fragments of primary rain forest along the East Kalimantan coast, whereas the rest of the reserve is covered by secondary forest, scrub, grassland, and farmland. Adult dragonfly assemblages at individual sampling sites were analysed in relation to (1) their intensity, (2) frequency of human-caused disturbances, and (3) the time since the last such disturbance, while controlling random variables (type of aquatic and terrestrial habitat) were removed. This study tests the effect of these factors on (1) species richness, (2) proportion of Zygoptera, (3) proportion of forest specialists, and (4) proportion of Borneo's endemics. The humaninduced disturbances in the rain forest resulted in pronounced changes in the taxonomical composition and functional diversity of the odonate fauna. Results reported here demonstrate that gradual changes in the odonate assemblages correspond to the degree of anthropogenic influences on forest environments. Adult odonates comprise an appropriately sensitive and versatile indicator group for identifying changes in terrestrial forest environments as well as in freshwater habitats.

show abstract

On the identity of two species of Tyriobapta (Odonata: Libellulidae) from Sundaland

Dow

Orr

2022

Notulae odonatologicae

View full text Add to dashboard Cite

Odonata of Sungai Bebar, Pahang, Malaysia, with four species recorded for the first time from mainland Asia

Cited by 3 publications

References 7 publications

Physicochemical Properties as Driver of Odonata Diversity in Oil Palm Waterways

Physicochemical Properties as Driver of Odonata Diversity in Oil Palm Waterways

Aquatic insects indicate terrestrial habitat degradation: changes in taxonomical structure and functional diversity of dragonflies in tropical rainforest of East Kalimantan

On the identity of two species of Tyriobapta (Odonata: Libellulidae) from Sundaland

Contact Info

Product

Resources

About