Results 11 to 20 of about 3,299 (201)

Ten new records of Odonata for Colombia (Coenagrionidae, Aeshnidae)

Biota Colombiana, 2023
We report ten new records of Odonata, including the true distribution of Acanthagrion yungarum Ris, 1918 in Colombia. The genus Dolonagrion Garrison & von Ellenrieder, 2008 is reported for the first time in the country with notes of its habitat.
Yiselle Cano-Cobos, Cornelio Bota-Sierra, Cristian Mendoza-Penagos   +2 more
doaj   +3 more sources

Assessing the Relationship Between Macroinvertebrate Metrics and Fine Sediment Index for Ecological Biomonitoring in the Little Akaki River, Addis Ababa, Ethiopia. [PDF]

Ecol Evol
Habitat quality had a positive correlation with percentage of Ephemeroptera, percentage of EOT, and Shannon diversity index (r = 0.833, r = 0.880, and r = 0.939, respectively). PSI had positive correlation with number of taxa, and ASPT‐ETHbios (r = 0.819, and r = 0.798, respectively). Most sites were heavily sedimented.
Adino A, Mengistou S.
europepmc   +2 more sources

Testing the Optimal Foraging Theory in a Generalist Feeder: The Case of Reintroduced European Pond Turtles and Its Impact on Macroinvertebrates Communities. [PDF]

Ecol Evol
In this study we investigated the macroinvertebrate (MI) communities in two newly created, man‐made ponds concurrently with the diet of captive‐bred European pond turtles that were translocated there. We aimed at assessing whether turtles were operating as generalist feeders, and if successive reintroductions of turtles would affect the overall MI ...
Meyer A, Grac C, Labat F, Meka J, van der Zon KAE, Theissinger K, Georges JY.   +6 more
europepmc   +2 more sources

Aquatic top predator prefers terrestrial prey in an intermittent stream. [PDF]

Ecology
Ecology, Volume 106, Issue 1, January 2025.
Al-Jamal AM, Ruhi A, Mohammadi RM, Bogan MT, Fournier RJ.   +4 more
europepmc   +2 more sources

Relative Effects of Eutrophication and Warming on Freshwater Ecosystems Across Ecological Levels. [PDF]

Glob Chang Biol
This experimental study explores the effects of global change on different ecological levels. We demonstrate that warming primarily impacts lower ecological levels, such as community composition, whereas eutrophication predominantly affects the most integrative ecological level, that is, ecosystem.
Marin V, Colas F, Boulêtreau S, Cucherousset J.   +3 more
europepmc   +2 more sources

Paleopteran molecular clock: Time drift and recent acceleration. [PDF]

Ecol Evol
Constant evolution rates, which form the foundation of the strict molecular clock model, do not apply in the case of Paleoptera, highlighting a notable bias in the molecular clock hypothesis. The current biodiversity may be the outcome of a relatively recent, exponential increase in base substitution rates.
Osozawa S, Nel A.
europepmc   +2 more sources

Leveraging Massive Opportunistically Collected Datasets to Study Species Communities in Space and Time. [PDF]

Ecol Lett
We present a spatiotemporal joint species distribution model to analyse large‐scale opportunistically collected biodiversity data. Our model addresses variable detection probabilities across visits and species by modelling phenological patterns and by extending the use of latent variables to characterise observer‐specific detection and reporting ...
Fajgenblat M, Wijns R, De Knijf G, Stoks R, Lemmens P, Herremans M, Vanormelingen P, Neyens T, De Meester L.   +8 more
europepmc   +2 more sources

First Records for \u3ci\u3eAeshna Sitchensis\u3c/i\u3e (Odonata: Aeshnidae) and \u3ci\u3eEnallagma Clausum\u3c/i\u3e (Odonata: Coenagrionidae), and a Northwestern Record for the State-Endangered \u3ci\u3eSomatochlora Incurvata\u3c/i\u3e (Odonata: Corduliidae) in Wisconsin [PDF]

, 2018
While surveying for Odonata in coastal peatlands and associated shoreline areas adjacent to Lake Superior in Wisconsin, we documented populations of two new state record species, the zig-zag darner (Aeshna sitchensis Hagen) and the alkali bluet ...
DuBois, Robert B, Epstein, Eric J, Mead, Kurt, Pleski, Julie M, Smith, William A   +4 more
core   +2 more sources

First Records of \u3ci\u3eGomphaeschna Furcillata\u3c/i\u3e and \u3ci\u3eAnax Longipes\u3c/i\u3e in Wisconsin (Odonata: Aeshnidae) [PDF]

, 2017
(excerpt) The two new records of Odonata reported here for Wisconsin are north- western range extensions for each species. The genus Gomphaeschna Selys contains two species, antilope (Hagen) and furcillata (Say), the distributions of which are limited to
Tennessen, K. J
core   +2 more sources

Karyotype Evolution in Aeshna (Aeshnidae, Odonata) [PDF]

Hereditas, 2004
The haploid DNA content of Aeshna confusa (2n = 27, n = 13 + XO, male). A. bonariensis (2n = 26, n = 12 + neo-XY, male) and A. cornigera planaltica (2n = 16, n = 7 + neo-XY, male) has been determined (2.16 ± 0.16 pg, 1.81 ± 0.17 pg, and 2.08 ± 0.08 pg, respectively).
Mola, L.M., Papeschi, A.G.
openaire   +3 more sources