Raguwar Yawan Kwari
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Bincike da yawa sun ba da rahoton raguwar yawan ƙwari. Mafi yawanci raguwar sun haɗa da raguwa da yawa, kodayake a wasu lokuta gabaɗayan nau'ikan ƙarin suna shuɗewa. Ragewar ba ta da nisa daga uniform. A wasu yankunan, an sami rahotannin karuwar yawan kwari, kuma wasu nau'ikan ƙwari suna da girma a duniya.
Raguwar Yawan Kwari | |
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Bayanai | |
Ƙaramin ɓangare na | mortality (en) da reduction (en) |
Facet of (en) | Holocene extinction (en) da biodiversity loss (en) |
Wasu daga cikin ƙwari da abin ya fi shafa sun hada da ƙudan zuma, malam buɗe ido, asu, beetles, dragonflies da damselflies. An ba da shedar ƙaƙƙarfan ƙaƙƙarfan ƙaƙƙarfan ƙwari a cikin ƙarni na ashirin 20; Tunawa da abin da ya faru a fuskar iska misali ne.
Dalilai masu yiwuwa suna kama da sauran asarar halittu, tare da binciken gano: lalata muhalli, gami da aikin gona mai zurfi ; amfani da magungunan kashe qwari (musamman magungunan kashe qwari ); haɓaka birane, da haɓaka masana'antu; gabatar da nau'in ; da sauyin yanayi. Ba duk umarni na kwari ke shafa ta hanya ɗaya ba; Ƙungiyoyi da yawa batutuwa ne na taƙaitaccen bincike, kuma alkaluma masu kwatanta daga shekarun da suka gabata ba sa samuwa.
Dangane da raguwar da aka bayar, an ƙaddamar da ƙarin matakan kiyayewa masu alaƙa da kwari. A cikin shekarar alif dubu biyu da goma sha takwas 2018 gwamnatin Jamus ta ƙaddamar da "Shirin Ayyuka don Kariyar Kwari",[1] kuma a cikin shekarar alif dubu biyu da goma sha tara 2019 ƙungiyar ashirin da bakwai 27 ƙwararru da masu ilimin halittu sun rubuta buɗaɗɗen wasiƙa suna kira ga kafa bincike a Burtaniya "don ba da damar bincike mai zurfi na Haƙiƙanin barazanar rushewar muhalli sakamakon raguwar kwari ba tare da bata lokaci ba”.