மார்செலோ ஐஸின் News Today : Breaking News, Live Updates & Top Stories | Vimarsana

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 collegeRhode islandUnited statesProvincia de rio negroRachael bonoanMarcelo aizenEduardo zattaraArgentina national university of comahueInstitute for research on biodiversityOne earthGlobal biodiversity information facilityNational universityNorth americaப்ராவிடெந்ஸ் கல்லூரிரோட் தீவுஒன்றுபட்டது மாநிலங்களில்

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 aizenEduarda zattaraCentre of informationArgentinians eduardaமார்செலோ ஐஸின்மையம் 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. Advertisement 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 statesUnited kingdomGary powneyKarina shahMarcelo aizenEduardoe zattaraEduardo zattaraUnited kingdom centre for ecologyNational university of comahueScientist default imageGiant patagonianNational universityGlobal biodiversity information facilityNorth americaUnited kingdom centreOne earth

Scientists Sound Alarm on Global Decline of Bee Species

Since the 1990s, up to 25% of reported bee species have disappeared from scientific records, suggesting a global decline in bee diversity. This photo shows a giant Patagonian bumblebee (Bombus dahlbomii). Four decades ago, these bees were abundant in Chile and Argentina, but now they have become an uncommon sight. (Credit: Eduardo E. Zattara) (CN) Since the 1990s, up to 25% of reported bee species have disappeared from scientific records, suggesting a global decline in bee diversity, according to new research published on Friday. A study published in the journal One Earth detailed the loss of bee species. While their disappearance does not prove whether these species of pollinators are extinct, it indicates that at least some bee species have become too rare to be routinely observed in their natural habitats, say scientists at the Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET) in Argentina.

United statesMarcelo aizenEduardoe zattaraEduardo zattaraPollination ecology groupInstitute for research on biodiversityOne earthConsejo nacional de investigaciones cientGlobal biodiversity information facilityNorth americaCentral americaஒன்றுபட்டது மாநிலங்களில்மார்செலோ ஐஸின்பாலிநேஶந் சூழலியல் குழுநிறுவனம் க்கு ஆராய்ச்சி ஆன் பல்லுயிர்ஒன்று பூமி