{"id":802,"date":"2020-04-05T15:32:20","date_gmt":"2020-04-05T15:32:20","guid":{"rendered":"http:\/\/localhost:9999\/rec\/1-mita-on-biodiversiteetti\/"},"modified":"2021-09-16T06:31:16","modified_gmt":"2021-09-16T06:31:16","slug":"1-vad-ar-biodiversitet","status":"publish","type":"post","link":"https:\/\/luonnonmonimuotoisuus.fi\/sv\/1-vad-ar-biodiversitet\/","title":{"rendered":"1. Vad \u00e4r biodiversitet?"},"content":{"rendered":"

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Film om hur biodiversitet kan definieras och vilken skala den har i olika grupper av levande organismer.<\/span><\/p>\n

[\/et_pb_text][\/et_pb_column][\/et_pb_row][\/et_pb_section][et_pb_section fb_built=”1″ _builder_version=”4.4.2″ custom_margin=”-2px|||||” custom_padding=”2px||0px|||” da_disable_devices=”off|off|off” da_is_popup=”off” da_exit_intent=”off” da_has_close=”on” da_alt_close=”off” da_dark_close=”off” da_not_modal=”on” da_is_singular=”off” da_with_loader=”off” da_has_shadow=”on”][et_pb_row _builder_version=”4.4.2″ custom_padding=”||0px|||”][et_pb_column type=”4_4″ _builder_version=”4.4.2″][et_pb_divider _builder_version=”4.4.2″][\/et_pb_divider][\/et_pb_column][\/et_pb_row][et_pb_row _builder_version=”4.4.2″][et_pb_column type=”4_4″ _builder_version=”4.4.2″][et_pb_text _builder_version=”4.4.2″]<\/p>\n

L\u00e4s mera om vetenskaplig forskning<\/b><\/h2>\n

H\u00e4r kan du bekanta dig med n\u00e5gra vetenskapliga studier som f\u00f6rs\u00f6ker uppskatta hur mycket ok\u00e4nda arter det fortfarande finns.<\/p>\n

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  1. \n

    Ett f\u00f6rs\u00f6k att uppskatta antalet arter i hela v\u00e4rlden.<\/b>
    \nUrsprungsartikel<\/a> \u2022 Sammanfattning p\u00e5 svenska<\/a>
    \nMora, C., Tittensor, D. P., Adl, S., Simpson, A. G. B. & Worm, B. 2011: How many species are there on Earth and in the ocean? PLoS Biology 9(8): e1001127. DOI: 10.1371\/journal.pbio.1001127.<\/small><\/p>\n<\/li>\n

  2. \n

    Vilka organismgrupper finns det mest av i v\u00e4rlden r\u00e4knat i biomassa?<\/b>
    \n    Ursprungsartikel<\/a> \u2022 Sammanfattning p\u00e5 svenska<\/a>
    \nBar-On, Y. M., Phillips, R. & Milo, R. 2018. The biomass distribution on Earth. PNAS 115(25): 6506-6511. DOI: 10.1073\/pnas.1711842115<\/small><\/span><\/p>\n<\/li>\n

  3. \n

    Unders\u00f6kning av antalet leddjursarter i en regnskog<\/b>
    \n    Ursprungsartikel<\/a> \u2022 Artikeln i ResearchGate<\/a> \u2022 Sammanfattning p\u00e5 svenska<\/a>
    \nBasset, Y., ym. 2012: Arthropod diversity in a tropical forest. Science 338(6113): 1481-1484. DOI: 10.1126\/science.1226727.<\/small><\/p>\n<\/li>\n<\/ol>\n

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    Ta reda p\u00e5
    <\/b><\/span><\/span><\/h2>\n

    Hur m\u00e5nga arter finns det i v\u00e4rlden? Varf\u00f6r har vi fortfarande inget entydigt svar p\u00e5 den h\u00e4r fr\u00e5gan? F\u00f6rs\u00f6k besvara de h\u00e4r fr\u00e5gorna sj\u00e4lv. <\/span><\/p>\n

    N\u00e4r man talar om biodiversitet avser man oftast antalet arter, men biodiversiteten har tv\u00e5 niv\u00e5er till: den genetiska diversiteten inom arterna och diversiteten av olika livsmilj\u00f6er.<\/span><\/p>\n

    Hur l\u00e4nge m\u00e5ste vi leta f\u00f6r att hitta alla arter?<\/b><\/span><\/h3>\n

    Titta p\u00e5 bild 1 i artikeln av Mora et al.<\/a> d\u00e4r x-axeln st\u00e5r f\u00f6r tiden och y-axeln f\u00f6r antalet k\u00e4nda arter vid varje tid. Kurvorna b\u00f6js efter hand, p\u00e5 grund av att man hittar allt f\u00e4rre nya arter i de grupper som redan b\u00f6rjar vara r\u00e4tt v\u00e4l k\u00e4nda. Om man letar tillr\u00e4ckligt l\u00e4nge hittar man i princip alla arter. N\u00e4r kurvan b\u00f6rjar l\u00f6pa n\u00e4stan v\u00e5gr\u00e4tt kan man uppskatta var det slutliga artantalet borde ligga.<\/span><\/p>\n

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    Experiment i grupper p\u00e5 3 \u2013 8 personer:<\/b><\/span><\/h5>\n