{"id":1898,"date":"2023-10-13T20:08:18","date_gmt":"2023-10-13T20:08:18","guid":{"rendered":"https:\/\/www.laspa.slg.br\/?page_id=1898"},"modified":"2023-10-13T20:08:18","modified_gmt":"2023-10-13T20:08:18","slug":"hidrogenio-e-calcio-em-braun-blanquet-1932","status":"publish","type":"page","link":"https:\/\/www.laspa.slg.br\/en\/projetos\/a-agencia-social-dos-elementos-quimicos\/levantamentos-da-presenca-de-elementos-quimicos-em-livros\/hidrogenio-e-calcio-em-braun-blanquet-1932\/","title":{"rendered":"Hidrog\u00eanio e c\u00e1lcio em Braun-Blanquet (1932)"},"content":{"rendered":"<p>1. <strong>Calcium<\/strong>.\u2014In its effect upon the distribution and grouping of plants the bivalent <strong>calcium<\/strong> ion (Ca++) is second only in ionic effect to the <strong>hydrogen<\/strong> (H+). <strong>Calcium<\/strong>, whose manifold importance in plant structure is well known, is found extensively in nature as humate in organic combination, as a <strong>sulphur<\/strong>ic salt (gypsum), as a silicate, but most abundantly in the form of a carbonate. Certain limestone rocks, such as marble, consist of as much as 99 per cent of CaCO<sub>3<\/sub>. Even some siliceous rocks, as syenite, plagioclase gneiss, and diorite, contain considerable quantities of <strong>calcium<\/strong>. The effectiveness of the <strong>calcium<\/strong> content for plants is determined by its solubility rather than by the absolute amount of <strong>calcium<\/strong> present. For, according to Klochmann, in water saturated with CO<sub>2<\/sub>, <strong>calcium<\/strong> carbonates dissolve in the proportion of 9 to 12 parts per 10,000, while the dolomitic carbonates dissolve in the proportion of 3 to 10 per 10,000. (Braun-Blanquet 1932:181)<\/p>\n<p>BRAUN-BLANQUET, Josias. 1932. <em>Plant sociology: the study of plant communities<\/em>. (Trans.: George D. Fuller; Henry S. Conard) New York: McGraw-Hill Book Company.<\/p>","protected":false},"excerpt":{"rendered":"<p>1. Calcium.\u2014In its effect upon the distribution and grouping of plants the bivalent calcium ion (Ca++) is second only in ionic effect to the hydrogen (H+). Calcium, whose manifold importance in plant structure is well known, is found extensively in nature as humate in organic combination, as a sulphuric salt (gypsum), as a silicate, but most abundantly in the form [&hellip;]<\/p>\n","protected":false},"author":2,"featured_media":0,"parent":1212,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"footnotes":""},"class_list":["post-1898","page","type-page","status-publish","hentry"],"jetpack_sharing_enabled":true,"_links":{"self":[{"href":"https:\/\/www.laspa.slg.br\/en\/wp-json\/wp\/v2\/pages\/1898","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.laspa.slg.br\/en\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/www.laspa.slg.br\/en\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/www.laspa.slg.br\/en\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/www.laspa.slg.br\/en\/wp-json\/wp\/v2\/comments?post=1898"}],"version-history":[{"count":1,"href":"https:\/\/www.laspa.slg.br\/en\/wp-json\/wp\/v2\/pages\/1898\/revisions"}],"predecessor-version":[{"id":1899,"href":"https:\/\/www.laspa.slg.br\/en\/wp-json\/wp\/v2\/pages\/1898\/revisions\/1899"}],"up":[{"embeddable":true,"href":"https:\/\/www.laspa.slg.br\/en\/wp-json\/wp\/v2\/pages\/1212"}],"wp:attachment":[{"href":"https:\/\/www.laspa.slg.br\/en\/wp-json\/wp\/v2\/media?parent=1898"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}