ama-gi 𒂼𒄄 Jun 6, 2024
Ahir al #montjuic de #barcelona van segar una mitjanera força gran entre dos carrers, que no utilitzaran ni els gossos per pixar, que era plena de #flors silvestres i #ruderals, tot per deixar les restes allí mateix. Després ens queixarem de la disminució de la #biodiversitat. Què en faran ara les #papallones, les #abelles i la resta d'#insectes?
Albert CardonaNov 24, 2022
@sergibertran Doncs realment moltes. Algunes poblacions bivoltines es tornen trivoltines, però la tercera no té prou temps de preparar gaires cel·les abans que les mati una gelada, així que a la primavera n'hi pot haver moltes menys. I hi ha tot de plantes que en depenen, d'aquestes abelles solitàries nadiues. L'impacte sobre l'ecosistema pot ésser notable.
#entomologia #abelles
Albert CardonaNov 24, 2022

Les abelles ja dormen i descansem intranquils. Quantes en sortiran a la primavera? Quina tardor tan estranya i calenta. Fins i tot hi ha un grup de #iNaturalist que en recull albiraments fora de temporada https://www.inaturalist.org/projects/out-of-season-bees algunes es passaren dos mesos de llarg!

Per exemple aquesta abella excavadora, Andrena cineraria https://www.inaturalist.org/observations/139536832 albirada el 21 d'octubre, que hauria d'haver estat hibernant des de finals d'agost.

#abelles #insectes #entomologia #fotografia #natura #nativebees

Out of season bees

Bees, in particular solitary species, are known to have short species-specific flight times of few weeks throughout the year. Small temporal and spatial variation of those flight times is normal and published data should always be treated with consideration of their spatial scope. Recently, however, there have been increasing reports of bee species being active far outside their usual flight season. This project is a place to collect all those observations to aid further assessment of possible environmental factors leading to this increase in "out of season" bees. What should be added to the project? - Bees in natural environments far off their reported flight time. - Evidence for a second generation of univoltine species (or a third generation of bivoltine species). What should not be added to the project? - Observations of bee species that are known to be active on warm days during the winter (e.g. Xylocopa spp.). - Observations of out of season bees, where a direct human impact c...

iNaturalist
Albert CardonaNov 22, 2022

Tenim cada borinot més bonic ...

Bombus mesomelas, trobat a la Serra de Montgrony, darrere Campanoles, al Pirineu català https://www.inaturalist.org/observations/127638688

#catalunya #entomologia #Pirineu #iNaturalist #abelles #insectes

Black-backed Bumble Bee (Bombus mesomelas)

Black-backed Bumble Bee from serra de Montgrony, Toses, Girona, ES on July 23, 2022 at 05:50 PM by Albert Cardona

iNaturalist
Show threadAlbert CardonaNov 5, 2022
@raquelcoutoantelo També va per web #iNaturalist. El borinot de la foto em sembla un Bombus pascuorum https://www.inaturalist.org/taxa/55637-Bombus-pascuorum com aquesta que vaig veure fa uns dies—encara tomben tot i el Novembre arribat (que no pas congelat!) https://www.inaturalist.org/observations/140710342 #abelles #nativebees #entomologia
Common Carder Bumble Bee (Bombus pascuorum)

Bombus pascuorum, the common carder bee, is a species of bumblebee present in most of Europe in a wide variety of habitats such as meadows, pastures, waste ground, ditches and embankments, roads, and field margins, as well as gardens and parks in urban areas and forests and forest edges. It is similar in appearance to Bombus muscorum, and is replacing the species in Northern Britain.... (Source: Wikipedia, '', http://en.wikipedia.org/wiki/Bombus_pascuorum, CC BY-SA 3.0 . Photo: (c) Fero Bednar, all rights reserved, uploaded by Fero Bednar)

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