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We haven't seen a quarter of known bee species since the 1990s


We haven’t seen a quarter of known bee species since the 1990s
A sweeping analysis shows an overall downward trend in bee diversity worldwide, raising concerns about these crucial pollinators.
ByLiz Langley
Email
But, it seems, these crucial insects aren’t doing very well. A study published today in the journal
One Earth reveals that in recent decades, the number of bee species reported in the wild has declined globally. The sharpest decrease occurred between 2006 and 2015, with roughly 25 percent fewer species spotted even as sightings by citizen scientists were increasing rapidly.
Halictid bees also called sweat bees for their attraction to our perspiration pollinate important crops such as alfalfa, sunflowers, and cherries. Observations of these tiny metallic fliers have fallen by 17 percent since the 1990s, the study found. ....

Providence College , Rhode Island , United States , Provincia De Rio Negro , Rachael Bonoan , Marcelo Aizen , Eduardo Zattara , Argentina National University Of Comahue , Institute For Research On Biodiversity , One Earth , Global Biodiversity Information Facility , National University , North America , ப்ராவிடெந்ஸ் கல்லூரி , ரோட் தீவு , ஒன்றுபட்டது மாநிலங்களில் , மாகாணம் டி ரியோ நீக்ரோ , மார்செலோ ஐஸின் , நிறுவனம் க்கு ஆராய்ச்சி ஆன் பல்லுயிர் , ஒன்று பூமி , உலகளாவிய பல்லுயிர் தகவல் வசதி , தேசிய பல்கலைக்கழகம் , வடக்கு அமெரிக்கா ,

Las abejas perdieron un 25 por ciento de especies en 30 años

Las abejas perdieron un 25 por ciento de especies en 30 años
aimdigital.com.ar - get the latest breaking news, showbiz & celebrity photos, sport news & rumours, viral videos and top stories from aimdigital.com.ar Daily Mail and Mail on Sunday newspapers.

Marcelo Aizen , Eduarda Zattara , Centre Of Information , Argentinians Eduarda , மார்செலோ ஐஸின் , மையம் ஆஃப் தகவல் ,

A quarter of all known bee species haven't been seen since the 1990s


Eduardo E. Zattara
The number of bee species recorded worldwide has been sharply decreasing since the 1990s.
Eduardo Zattara and Marcelo Aizen at the National University of Comahue in Argentina analysed how many wild bee species are observed each year as recorded in the Global Biodiversity Information Facility – a publicly available platform where researchers and citizens can record sightings of bee species.
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They found that there were a quarter fewer species reported between 2006 and 2015, as compared with the records we have from before 1990.
The decline is especially alarming considering the number of bee records in this database has increased by around 55 per cent since 2000, so it isn’t down to a lack of observations. ....

United States , United Kingdom , Gary Powney , Karina Shah , Marcelo Aizen , Eduardoe Zattara , Eduardo Zattara , United Kingdom Centre For Ecology , National University Of Comahue , Scientist Default Image , Giant Patagonian , National University , Global Biodiversity Information Facility , North America , United Kingdom Centre , One Earth , ஒன்றுபட்டது மாநிலங்களில் , ஒன்றுபட்டது கிஂக்டம் , கரினா ஷா , மார்செலோ ஐஸின் , ஒன்றுபட்டது கிஂக்டம் மையம் க்கு சூழலியல் , விஞ்ஞானி இயல்புநிலை படம் , ராட்சத ப்யாடகோநியந் , தேசிய பல்கலைக்கழகம் , உலகளாவிய பல்லுயிர் தகவல் வசதி , வடக்கு அமெரிக்கா ,