Physicochemical Properties as Driver of Odonata Diversity in Oil Palm Waterways

Frontiers in Forests and Global Change

Stephen M. Thomas²  Muhamad Ishak³  Siti Nurhidayu³  Amal Ghazali³  Ahmad R. Norhisham⁴  Badrul Azhar⁵ 

[1] Biodiversity Unit, Institute of Bioscience, Universiti Putra Malaysia, Serdang, Malaysia;Department of Fish Ecology and Evolution, EAWAG Swiss Federal Institute of Aquatic Science and Technology, Center for Ecology, Evolution and Biogeochemistry, Dübendorf, Switzerland;Department of Forestry Science and Biodiversity, Faculty of Forestry and Environment, Universiti Putra Malaysia, Serdang, Malaysia;Institute of Tropical Forestry and Forest Products, Universiti Putra Malaysia, Serdang, Malaysia;School of Environmental and Geographical Sciences, University of Nottingham Malaysia, Semenyih, Malaysia;

关键词: aquatic biodiversity;    dragonflies;    damselflies;    habitat degradation;    smallholdings;    water quality;   

DOI  :  10.3389/ffgc.2021.613064

来源: DOAJ

【 摘 要 】

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.

【 授权许可】

Unknown