{"id":2257,"date":"2021-12-09T14:10:12","date_gmt":"2021-12-09T14:10:12","guid":{"rendered":"https:\/\/dobrowolski.igf.edu.pl\/?p=2257"},"modified":"2021-12-09T14:12:02","modified_gmt":"2021-12-09T14:12:02","slug":"pierwszy-snieg","status":"publish","type":"post","link":"https:\/\/dobrowolski.igf.edu.pl\/pierwszy-snieg\/","title":{"rendered":"Pierwszy \u015bnieg"},"content":{"rendered":"\n

Coraz zimniej – na horyzoncie zaczynaj\u0105 pojawia\u0107 si\u0119 g\u00f3ry lodowe, pada te\u017c pierwszy \u015bnieg. Ale to dopiero przedsmak tego, co b\u0119dzie na Antarktydzie.<\/em><\/p>\n\n\n\n\n\n\n\n

30 dzie\u0144 rejsu<\/h3>\n\n\n\n

54\u00b021,80\u2019 S, 23\u00b002,32\u2019 E, kurs = 110\u00b0, V=14,1 kn, stan morza 5<\/p>

Dzi\u015b temperatura wody -0,4\u00b0C. Pada \u015bnieg. Kapitan przecisn\u0105\u0142 si\u0119 pomi\u0119dzy dwoma centrami ni\u017cowymi, omijaj\u0105c strefy silnych gradient\u00f3w ci\u015bnienia. Teraz mamy wiatr w ruf\u0119. P\u0142yniemy jak po g\u0142adkiej tafli, cho\u0107 morze podekscytowane.<\/p>

Wczoraj po po\u0142udniu pierwsza bry\u0142a lodu. Szcz\u0105tek g\u00f3ry lodowej wielko\u015bci ci\u0119\u017car\u00f3wki. Ale dzi\u015b na horyzoncie pojawi\u0142a si\u0119 mama. Majestatyczna, wygl\u0105da jak kilkunastopi\u0119trowa kamienica o d\u0142ugo\u015bci ok. 1 km (1\/3 wyci\u0105gni\u0119tej pi\u0119\u015bci, tj. ok. 4\u00b0 \u0142uku na horyzoncie \u2013 dobrze licz\u0119?). Moja pierwsza g\u00f3ra lodowa. Nazwa\u0142em j\u0105 MPGL-1-2021 (czyt.: empegieel, nie: empid\u017cel). Mo\u017ce urwa\u0142a si\u0119 Antarktydzie z jakim\u015b pingwinem? Z daleka nie widz\u0119, a chcia\u0142bym, bo \u017cywego pingwina w naturze te\u017c jeszcze nie widzia\u0142em. Za to w zoo \u2013 tak.<\/p>

Czy nie b\u0119dzie tak, \u017ce zoo b\u0119dzie ostatnim refugium dla ziemskiej bioty? Te\u017c si\u0119 w nim znajdziemy? Bar-on, Philips i Milo opublikowali artyku\u0142 The biomass distribution on Earth<\/em>. Publikacja ukaza\u0142a si\u0119 w szanowanym czasopi\u015bmie PNAS w roku 2018. Wed\u0142ug autor\u00f3w kr\u0119gowce, w tym ludzie, stanowi\u0105 ok. 3% biomasy zwierz\u0105t, a ta z kolei to ok. 1% ca\u0142kowitej biomasy na Ziemi przeliczonej na w\u0119giel pierwiastkowy (C). Ziemsk\u0105 biomas\u0119 dominuj\u0105 ro\u015bliny (80%), bakterie (12%) i grzyby (ok. 2%), potem archeony, protisty i zwierz\u0119ta. Na samym ko\u0144cu zwierz\u0119ta dzikie (wildlife<\/em>), w swojej masie kilkakrotnie mniejsze od masy zwierz\u0105t hodowlanych (np. masa ptak\u00f3w hodowlanych przekracza trzykrotnie mas\u0119 dzikiego ptactwa). <\/p>

Znajduj\u0105c si\u0119 prawie na ko\u0144cu szeregu udzia\u0142owc\u00f3w w biomasie z wk\u0142adem ok. 2 promili C, uda\u0142o nam si\u0119 osi\u0105gn\u0105\u0107 niebotyczny sukces ewolucyjny. W ci\u0105gu ostatnich 200 latach zwielokrotnili\u015bmy liczb\u0119 nas samych czterokrotnie. Zapanowali\u015bmy nad \u017cyciem na planecie w spos\u00f3b bezwzgl\u0119dny. Nie ma gatunku, kt\u00f3rego nie mogliby\u015bmy zdziesi\u0105tkowa\u0107 albo wybi\u0107 do nogi. Zredukowali\u015bmy liczb\u0119 ssak\u00f3w l\u0105dowych siedmiokrotnie, ssak\u00f3w morskich pi\u0119ciokrotnie, biomas\u0119 ro\u015blinn\u0105 o 50%. Ostatnio mamy co prawda k\u0142opoty z niepozornym bia\u0142kiem (kt\u00f3re nawet nie jest \u017cywym organizmem), ale to tylko przej\u015bciowo. Przyjdzie czas i na kowidowego wirusa. Takie mnie nasz\u0142y my\u015bli, bo nie mog\u0119 zapomnie\u0107 foki z opony w Kapsztadzie (vide Dzie\u0144 27<\/a>).<\/p>Przes\u0142ane przez Marka Lewandowskiego<\/em><\/cite><\/blockquote>\n","protected":false},"excerpt":{"rendered":"

Coraz zimniej – na horyzoncie zaczynaj\u0105 pojawia\u0107 si\u0119 g\u00f3ry lodowe, pada te\u017c pierwszy \u015bnieg. Ale to dopiero przedsmak tego, co b\u0119dzie na Antarktydzie.<\/p>\n","protected":false},"author":4,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[73],"tags":[],"class_list":["post-2257","post","type-post","status-publish","format-standard","hentry","category-aktualnosci"],"yoast_head":"\nPierwszy \u015bnieg - Strona Stacji A.B. Dobrowolskiego<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/dobrowolski.igf.edu.pl\/pierwszy-snieg\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Pierwszy \u015bnieg - Strona Stacji A.B. 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