Rice paddy fields are important habitat for many dragonfly species. In Japan, populations of dragonflies inhabiting rice paddies, in particular Sympetrum (Odonata: Libellulidae), have decreased greatly the last few decades. A major cause decline has been suggested to be use systemic insecticides (e.g., phenylpyrazole and neonicotinoid) nursery boxes seedlings. this study, we examined effects ch...

Abstract Three media (sediment, surface water, and dragonfly larvae tissue) were collected from wetlands surrounding an industrial effluent treatment facility prior to closure. Samples analyzed for metals, total mercury, polychlorinated dibenzo- p -dioxins/polychlorinated dibenzofurans (PCDD/PCDF) concentrations. Sediment water concentrations compared provincial federal guidelines, as well refe...

A year-long study was conducted in the dry deciduous ecoregion of Purulia, West Bengal, India from March 2018 to February 2019 document diversity, species composition, and occurrence odonata different seasons. Direct search opportunistic sighting methods were used combination at five selected sites, namely, Sidho-Kanho-Birsha University campus, Saheb Bandh, Surulia Deer Park (Mini Zoo), Ketika,...

Capung memiliki fungsi yang sangat penting bagi lingkungan, sebab dapat menjaga keseimbangan ekosistem, dengan begitu keanekaragaman jenis capung dijadikan sebagai bioindikator kesehatan suatu kawasan. Penelitian ini bertujuan untuk mengetahui dan distribusi di kawasan padang rumput Desa Bingin Rupit Ulu Kecamatan Rupit. mengunakan metode survei langsung ke lokasi penelitian jelajah. Luas ±1 ha...

We assessed and compared abiotic preferences of aquatic macroinvertebrates in three river basins located in Ecuador, Ethiopia and Vietnam. Upon using logistic regression models we analyzed the relationship between the probability of occurrence of five macroinvertebrate families, ranging from pollution tolerant to pollution sensitive, (Chironomidae, Baetidae, Hydroptilidae, Libellulidae and Lept...