Results 41 to 50 of about 5,277 (226)

HOPEAPHENOL-O-GLYCOSIDE, A COMPOUND ISOLATED FROM STEM BARK Anisoptera marginata (Dipterocarpaceae)

open access: yesIndonesian Journal of Chemistry, 2010
Isolation and structure elucidation of some compounds from stem bark of Anisoptera marginata had been done. The isolation of those compounds was carried out by chromatographyc method and structure elucidation was performed by interpretation of ...
Sri Atun
doaj   +1 more source

Macromia alleghaniensis (Odonata: Macromiidae): New For Michigan, with Clarifications of Northern Records [PDF]

open access: yes, 2017
An Alleghany River Cruiser, Macromia alleghaniensis Williamson (Odonata: Macromiidae), collected in Cass County, Michigan on 18 June 2014, represents the first record of the species for the state, as well as the northernmost unequivocal record in North ...
Craves, Julie A, O’Brien, Darrin S
core   +2 more sources

The impacts of habitat disturbance on adult and larval dragonflies (Odonata) in rainforest streams in Sabah, Malaysian Borneo [PDF]

open access: yes, 2017
$\textbf{1.}$ Dragonfly assemblages (Odonata: comprising damselflies, Zygoptera; and dragonflies, Anisoptera) in Southeast Asian rainforests are extremely diverse but increasingly threatened by habitat disturbance, including logging and conversion of ...

core   +2 more sources

Forest Loss Influences Biomass Distribution Across Trophic Groups of Amazonian Stream Insects

open access: yesFreshwater Biology, Volume 71, Issue 2, February 2026.
ABSTRACT Changes in resource availability caused by deforestation can negatively impact freshwater ecosystems, with implications for trophic chains. We investigated both the direct and indirect effects of forest cover and allochthonous resource availability on the biomass distribution of larvae of aquatic insects (Ephemeroptera, Plecoptera, Trichoptera
Gabriel Martins Cruz   +8 more
wiley   +1 more source

Observations on the Nesting of \u3ci\u3eCrabro Tenuis\u3c/i\u3e (Hymenoptera: Sphecidae) [PDF]

open access: yes, 2017
Three nests of Crabro tenuis were studied during June 1971-1972 in Oswego County, New York. Females constructed shallow but lengthy, multicelled nests in sand with the cells being built in clusters, sometimes in series. Females plugged the entrances with
Kurczewski, Frank E, Miller, Richard C
core   +2 more sources

Plant Traits as Potential Drivers of Timber Value in the Dipterocarpaceae

open access: yesEcology and Evolution, Volume 16, Issue 1, January 2026.
This study examines how plant traits and wood density influence timber market value in Southeast Asia's Dipterocarpaceae family. Using a phylogenetic approach, it finds that higher wood density is linked to greater timber prices, while conservation status does not correlate with market value.
Nazrin Malik   +2 more
wiley   +1 more source

Odonata (Insecta) diversity of Kuldiha Wildlife Sanctuary and its adjoining areas, Odisha, eastern India

open access: yesJournal of Threatened Taxa, 2018
A study was carried out to assess the Odonata fauna of Kuldiha Wildlife Sanctuary, Odisha, eastern India from November 2012 to October 2013.  During the study a total of 54 species of odonates including 37 species of dragonflies (Anisoptera) and 17 ...
Subrat Debata, Kedar Kumar Swain
doaj   +1 more source

Golf courses and wetland fauna [PDF]

open access: yes, 2009
Golf courses are often considered to be chemical-intensive ecosystems with negative impacts on fauna. Here we provide evidence that golf courses can contribute to the support and conservation of wetland fauna, i.e., amphibians and macroinvertebrates ...
Andersson, Erik   +3 more
core   +1 more source

Integrating eDNA and community science to monitor urban Odonata diversity

open access: yesInsect Conservation and Diversity, Volume 19, Issue 1, Page 84-92, January 2026.
Environmental DNA captured rare and underrepresented taxa often missed by community science observations. Community science revealed adult‐stage observations across a broader temporal window. Integrating both methods improved detection across life stages, seasons, and species prevalence.
Rhema Uche‐Dike   +25 more
wiley   +1 more source

New record of andromorphic Urothemis signata Rambur (Odonata: Libellulidae) from India

open access: yesRevista Chilena de Entomología, 2019
First case of an andromorphic female of Urothemis signata from eastern India is presented. Detail comparisons of the andromorphic female with mature male and female of this species are given.
Arajush Payra
doaj   +1 more source

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