Results 71 to 80 of about 3,291 (171)

Gynacantha subinterrupta Rambur, 1842: an addition to the odonates (Insecta: Odonata: Aeshnidae) of Bangladesh

open access: yesJournal of Threatened Taxa, 2015
Gynacantha subinterrupta Rambu 1842 is first time recorded from Bangladesh. The species is described from two male specimens collected from Tilagor Eco Park, Sylhet.  Description, identification keys and distribution range of the species is provided.  
M. Kawsar Khan
doaj   +3 more sources

Contribution to the Odonata of the Kingdom of Tonga [PDF]

open access: yes, 2013
New data on the Odonata fauna of the Kingdom of Tonga is provided following re-search carried out on Tongatapu and 'Eua islands in July 2012. New localities for Tongatapu Island are put on record and previous studies are compared with new pheno-logical ...
Marinov, Milen
core  

Fluvial habitat associations of riverine dragonflies (Odonata, Gomphidae) in the Huron Mountains (Michigan, USA)

open access: yesRiver Research and Applications, Volume 40, Issue 10, Page 2022-2034, December 2024.
Abstract The presence of sediment‐burrowing clubtail dragonflies (Gomphidae) may be directly related to riverine geomorphic properties. Their synchronous emergence behavior, marked by persistent exuviae, allows for the examination of emerging adult‐stage habitats.
Jessica M. Orlofske   +4 more
wiley   +1 more source

Dry season refuges, refugia and flow‐regime change in Mediterranean climate streams

open access: yesFreshwater Biology, Volume 69, Issue 11, Page 1607-1626, November 2024.
Abstract Climate change is causing stream flow regimes to change in many regions globally, including southwestern Australia (SWA) where many perennial streams have switched to intermittent flow regimes. In drier landscapes, ecological refuges and evolutionary refugia will become critical for conserving freshwater biodiversity.
N. Carey, E. T. Chester, B. J. Robson
wiley   +1 more source

Anax panybeus Hagen, 1867: an addition to the Odonata (Aeshnidae) of India

open access: yesJournal of Threatened Taxa, 2013
A new record of Indian dragonfly fauna- Anax panybeus Hagen, 1867 is reported from Andaman and Nicobar Islands. Two male specimens of this species were identified from National Zoological Collection, Zoological Survey of India, Kolkata.
T.R. Mitra, R. Babu, K.A. Subramanian
doaj   +1 more source

Spatial and Temporal Distribution of Natural Enemies Visiting Refugia in a Paddy Field Area in Malang [PDF]

open access: yes, 2012
Human activities in seeking agricultural lands, has change the traditional agricultural system into intensive cultivation system. One effort to minimize intensive agriculture system is the use of natural enemies to control pests.
Leksono, A. S. (Amin)   +3 more
core   +1 more source

Odonata de un bosque tropical caducifolio: sierra de San Javier, Sonora, México Odonata from a tropical deciduous forest: sierra de San Javier, Sonora, Mexico

open access: yesRevista Mexicana de Biodiversidad, 2009
Se realizó un estudio para conocer la fauna de Odonata del límite norte de distribución del bosque tropical caducifolio localizado en la región de San Javier, Sonora, durante 7 meses entre noviembre del 2003 y octubre del 2004. Se recolectó un total de 1
Enrique González-Soriano   +3 more
doaj  

Previously unpublished Odonata records from Sarawak, Borneo : part 1, Kuching Division excluding Kubah National Park, and Samarahan Division [PDF]

open access: yes, 2013
Records of Odonata from Kuching and Samarahan, the western administrative divisions of Sarawak in Malaysian Borneo, are presented. Forty-two species are listed from Bako National Park, and eighty-nine species are listed from various other locations ...
Dow, Rory A., Reels, Graham T.
core  

The drivers of benthic macroinvertebrates communities along a subtropical river system: Sediments chemistry or water quality?

open access: yesEcohydrology, Volume 17, Issue 5, July 2024.
Abstract Impacts of metal pollution, either on water or in sediments within aquatic systems have been a serious challenge globally. Little is known about the ecological impacts of metal pollution on benthic macroinvertebrates species in sub–tropical river systems.
Linton F. Munyai   +3 more
wiley   +1 more source

Gynandromorphism in the Odonata [PDF]

open access: yes, 2017
In the Odonata, gynandromorphism has been rarely observed or mentioned in the literature. In 1929, Ris reported that only three cases were known to him. Two were in the Calopterygidae, and one in the Libellulidae. Since the gynandromorphic specimens have
Gloyd, Leonora K.
core   +2 more sources

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