Posts Tagged ‘paquets d’abeilles’

www.apiterra.fr élu site à voir

Dimanche, 22 mai 2011 08:38 Written by Apiterra 0 Comments

http://www.sites-a-voir.com/apiterra-fr.php

Le site Apiterra.fr est dédié aux abeilles et à leurs élevages. Cinq menus sont disponibles.  » Apitera Elevage d’Essaims  » nous explique le but de la société Apiterra.  » Ruches en Entreprise s » est une proposition de services de ruches dans les entreprises, les collectivités ou les organismes. C’est l’installation de ruches à la ville comme à la campagne sur les toits ou sur les parkings.  » Apiterra  » nous présente la société.  » Abeilles résistantes  » Varroa explique la collaboration avec l’INRA pour sauver les abeilles. Enfin un  » Kit débutant Apiculture  » nous est proposé pour se lancer dans l’apiculture.

Achats et ventes d’essaims sur cadres et paquets d’abeilles: www.eurobeestock.com

 

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En 50 ans, l’agriculture mondiale s’est 2 fois plus exposée aux pollinisateurs

Dimanche, 03 avril 2011 08:41 Written by Apiterra 0 Comments

L’exposition de l’agiculture mondiale aux pollinisateus a été multiplée par 4 en 50 ans alors que le nombre de colonies d’abeilles augmentait de 45% seulement.

La situation s’aggravent brutalement en Amérique du Nord, territoires particulièrement frappés par la surmortalité des abeilles où la réduction du nombre d’abeilles a été notable (-50% aux Etats-Unis, -20% en Europe occidentale) et où la baisse de production des cultures dépendantes des abeilles pourrait être exponentielle.

Etude de l’UNEP: http://www.eurobeestock.com/site/medias/GlobalBeeColonyDisorderandThreatsinsectpollinators.pdf

Currently available global data and knowledge on the decline of pollinators are not sufficiently conclusive to demonstrate that there is a worldwide pollinator and related crop production crisis54. Although honey bee hives have globally increased close to 45% during the last 50 years55, declines have been reported in several locations, largely in Europe and Northern America. This apparent data discrepancy may be due to interpretations of local declines which may be masked by aggregated regional or global data. During the same 50-year period, agricultural production that is independent from animal pollination has doubled, while agricultural production requiring animal pollination has increased four-fold (reaching 6.1% in 2006). This appears to indicate that global agriculture has become increasingly pollinator dependant over the last 50 years. However, human activities and their environmental impacts may be detrimental to some species but beneficial to others, with sometimes subtle and counter-intuitive causal linkages56, 57. Pollination is not just a free service but one that requires investment and stewardship to protect and sustain it. There should be a renewed focus on the study, conservation and even management of native pollinating species to complement the managed colony tradition. Economic assessments of agricultural productivity should include the costs of sustaining wild and managed pollinator populations58. 12 __________________________________ 54 Ghazoul J, 2005. “Buzziness as usual? Questioning the global pollination crisis”. TRENDS in Ecology and Evolution Vol.20 No.7 July 2005. 55 Aizen M. A. 2009. “The Global Stock of Domesticated Honey Bees Is Growing Slower Than Agricultural Demand for Pollination”. Current Biology 19, 1– 4, June 9. 56 Thomas C. D, and Jones T.M. 1993. “Partial recovery of a skipper butterfly (Hesperia comma) from population refuges: lessons for conservation in a fragmented landscape”. Journal of Animal Ecology 62: 472-481. 57 Benedek P, 1996. “Structure and density of lucerne pollinating wild bee populations as affected by changing agriculture”. Acta Horticulturae 437: 353-357. 58 Ingram M, Nabhan G. and Buchmann S. “Global Pesticide Campaigner”, Volume 6, Number 4, December 1996. Bumble

Repeupler vos ruchers et cheptels d’abeilles avec des essaims sur cadres et paquets d’abeilles disponibles sur www.eurobeestock.com

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La mortalité des abeilles pourrait également affecter la chine

Samedi, 02 avril 2011 08:30 Written by Apiterra 0 Comments

Extrait de l’étude UNEP: http://www.eurobeestock.com/site/medias/GlobalBeeColonyDisorderandThreatsinsectpollinators.pdf

Les 200 000 apiculteurs chinois possédent 6 millions de ruches. Ils commenceraient à connaitres des cas de CCD et subiraient des pertes lourdes. La première cause pourrait en être le varroa.

China has six million bee colonies; about 200 000 beekeepers in this region raise western honey bees (A. mellifera) and eastern honey bees (A. cerana). In recent years, Chinese beekeepers have faced several inexplicable and complex symptoms of colony losses in both Apis species. Certain losses are known to be caused by Varroa mites on A. mellifera, sacbrood viruses on A. cerana and Tropilaelaps mites on both species. However, other factors and mechanisms are being investigated, although no data has been published to date.

Achats et ventes d’essaims sur cadres pour repeuplement de cheptels et de ruchers d’abailles: www.eurobeestock.com

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70% de réduction des pollinisateurs sauvages au Royaume-Uni et Pays Bas depuis 30 ans

Vendredi, 01 avril 2011 08:24 Written by Apiterra 0 Comments

Extrait de l’étude UNEP: http://www.eurobeestock.com/site/medias/GlobalBeeColonyDisorderandThreatsinsectpollinators.pdf

Animal-based pollination services, from wild species like the bumble bee, foster reproductive potential and genetic resilience in many ecosystems. Although conclusive data indicates that some 1 200 wild vertebrate pollinators may be at risk10, there is a lack of data on many invertebrate species that act as pollination agents. Threats to certain invertebrate pollinator populations were reported in Europe as early as 198011, and confirmed in the 1990s. The regression mostly affected long-tongued species; this is likely due to the reduction in plants with long inner petals (e.g. Lamiaceae, Fabaceae, Scrophulariaceae). A British and Dutch study showed that in the United Kingdom (UK) and the Netherlands alone, since the 1980s a 70% drop in wild flowers requiring insect pollination has been recorded, as well as a shift in pollinator community composition12. In the UK, many pollinator species that were relatively rare in the past are becoming rarer, while more common species have become widespread. It was also found that 71% of butterfly species have decreased and 3.4% became extinct over the past 20 years, illustrating the highest net loss compared to native flowering plants (28% decrease in 40 years) and birds (54% decrease over 20 years) in the same UK region13.

Repeuplement de cheptels d’abeilles et de ruchers avec des essaims sur cadres et paquets d’abeilles sur www.eurobeestock.com

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71% des cultures sont dépendantes de la pollinisation de l’abeille, 84% en Europe

Jeudi, 31 mars 2011 08:17 Written by Apiterra 0 Comments

Extrait de l’étude de l’UNEP: http://www.eurobeestock.com/site/medias/GlobalBeeColonyDisorderandThreatsinsectpollinators.pdf

Current evidence demonstrates that a sixth major extinction of biological diversity event is underway.1. The Earth is losing between one and ten percent of biodiversity per decade2, mostly due to habitat loss, pest invasion, pollution, over-harvesting and disease3. Certain natural ecosystem services are vital for human societies. Many fruit, nut, vegetable, legume, and seed crops depend on pollination. Pollination services are provided both by wild, free-living organisms (mainly bees, but also to name a few many butterflies, moths and flies), and by commercially managed bee species. Bees are the predominant and most economically important group of pollinators in most geographical regions. The Food and Agriculture Organisation of the United Nations (FAO)4 estimates that out of some 100 crop species which provide 90% of food worldwide, 71 of these are bee-pollinated. In Europe alone, 84% of the 264 crop species are animalpollinated and 4 000 vegetable varieties exist thanks to pollination by bees5. The production value of one tonne of pollinator-dependent crop is approximately five times higher than one of those crop categories that do not depend on insects6. Has a “pollinator crisis” really been occurring during recent decades, or are these concerns just another sign of global biodiversity decline? Several studies have highlighted different factors leading to the pollinators’ decline that have been observed around the world. This bulletin considers the latest scientific findings and analyses possible answers to this question. As the bee group is the most important pollinator worldwide, this bulletin focuses on the instability of wild and managed bee populations, the driving forces, potential mitigating measures and recommendations.

Achats et ventes d’essaims sur cadres pour repeuplement de ruchers d’abeilles: www.eurobeestock.com

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