Microhabitat preferences of six Drosera (Droseraceae) from Tibagi river basin, Paraná state, Brazil
We studied the microhabitats and the climatic requirements of six Drosera taxa, which occur in the subtropical grasslands of the Tibagi river basin. They are annual,or most communly, perennial herbs known as carnivorous plants, whose leaves are transformed into traps for the capture and digestion of...
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| Format: | Article |
| Language: | English |
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Instituto de Tecnologia do Paraná (Tecpar)
2004-08-01
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| Series: | Brazilian Archives of Biology and Technology |
| Subjects: | |
| Online Access: | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132004000400001 |
| _version_ | 1811316940295110656 |
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| author | Dennis Panayotis Saridakis José Marcelo Domingues Torezan Galdino Andrade |
| author_facet | Dennis Panayotis Saridakis José Marcelo Domingues Torezan Galdino Andrade |
| author_sort | Dennis Panayotis Saridakis |
| collection | DOAJ |
| description | We studied the microhabitats and the climatic requirements of six Drosera taxa, which occur in the subtropical grasslands of the Tibagi river basin. They are annual,or most communly, perennial herbs known as carnivorous plants, whose leaves are transformed into traps for the capture and digestion of small insects as an adaptation for supplying nutricional deficiencies. They usually occur in distrophic substrata. In order to contribute to conservation plans for the species of the genus, threatened by the conversion of the natural grasslands into pastures, we tried to define their preferential habitats and climatic requirements. We verified that the variables of microhabitat and altitude presented significant correlation at 5% probability level, while the variables in annual average relative humidity, annual average temperature and type of substratum types did not show significant correlation.<br>Nós estudamos os microhabitats e as exigências climáticas de seis taxa de Drosera (Droseraceae), que ocorrem nos campos subtropicais da bacia do rio Tibagi. São ervas perenes, conhecidas como plantas carnívoras, cujas folhas são transformadas em armadilhas para a captura e digestão de pequenos animais, o que tem sido referido como adaptação para suprir deficiências nutricionais, já que geralmente ocorrem em substratos distróficos. Para auxiliar na elaboração de planos de conservação para as espécies do gênero, ameaçadas pela conversão dos campos em pastagens, nós procuramos definir os habitats preferenciais e as exigências climáticas. Verificou-se que as variáveis: tipo de microhabitat e altitude apresentam correlação significativa no nível de 5%, enquanto as variáveis: umidade relativa média anual, temperatura média anual e tipo de substrato, não apresentaram correlação significativa. Os resultados obtidos sugerem que a distribuição dos taxa de Drosera estudados está relacionada principalmente com a variação de altitude e o tipo de microhabitat. |
| first_indexed | 2024-04-13T11:58:03Z |
| format | Article |
| id | doaj.art-38712465e3dd450b8a7f635463e1bd2f |
| institution | Directory Open Access Journal |
| issn | 1516-8913 1678-4324 |
| language | English |
| last_indexed | 2024-04-13T11:58:03Z |
| publishDate | 2004-08-01 |
| publisher | Instituto de Tecnologia do Paraná (Tecpar) |
| record_format | Article |
| series | Brazilian Archives of Biology and Technology |
| spelling | doaj.art-38712465e3dd450b8a7f635463e1bd2f2022-12-22T02:47:52ZengInstituto de Tecnologia do Paraná (Tecpar)Brazilian Archives of Biology and Technology1516-89131678-43242004-08-0147449550110.1590/S1516-89132004000400001Microhabitat preferences of six Drosera (Droseraceae) from Tibagi river basin, Paraná state, BrazilDennis Panayotis SaridakisJosé Marcelo Domingues TorezanGaldino AndradeWe studied the microhabitats and the climatic requirements of six Drosera taxa, which occur in the subtropical grasslands of the Tibagi river basin. They are annual,or most communly, perennial herbs known as carnivorous plants, whose leaves are transformed into traps for the capture and digestion of small insects as an adaptation for supplying nutricional deficiencies. They usually occur in distrophic substrata. In order to contribute to conservation plans for the species of the genus, threatened by the conversion of the natural grasslands into pastures, we tried to define their preferential habitats and climatic requirements. We verified that the variables of microhabitat and altitude presented significant correlation at 5% probability level, while the variables in annual average relative humidity, annual average temperature and type of substratum types did not show significant correlation.<br>Nós estudamos os microhabitats e as exigências climáticas de seis taxa de Drosera (Droseraceae), que ocorrem nos campos subtropicais da bacia do rio Tibagi. São ervas perenes, conhecidas como plantas carnívoras, cujas folhas são transformadas em armadilhas para a captura e digestão de pequenos animais, o que tem sido referido como adaptação para suprir deficiências nutricionais, já que geralmente ocorrem em substratos distróficos. Para auxiliar na elaboração de planos de conservação para as espécies do gênero, ameaçadas pela conversão dos campos em pastagens, nós procuramos definir os habitats preferenciais e as exigências climáticas. Verificou-se que as variáveis: tipo de microhabitat e altitude apresentam correlação significativa no nível de 5%, enquanto as variáveis: umidade relativa média anual, temperatura média anual e tipo de substrato, não apresentaram correlação significativa. Os resultados obtidos sugerem que a distribuição dos taxa de Drosera estudados está relacionada principalmente com a variação de altitude e o tipo de microhabitat.http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132004000400001Ecologycarnivorous plantsDroserasundewBrazilTibagi River Basin |
| spellingShingle | Dennis Panayotis Saridakis José Marcelo Domingues Torezan Galdino Andrade Microhabitat preferences of six Drosera (Droseraceae) from Tibagi river basin, Paraná state, Brazil Brazilian Archives of Biology and Technology Ecology carnivorous plants Drosera sundew Brazil Tibagi River Basin |
| title | Microhabitat preferences of six Drosera (Droseraceae) from Tibagi river basin, Paraná state, Brazil |
| title_full | Microhabitat preferences of six Drosera (Droseraceae) from Tibagi river basin, Paraná state, Brazil |
| title_fullStr | Microhabitat preferences of six Drosera (Droseraceae) from Tibagi river basin, Paraná state, Brazil |
| title_full_unstemmed | Microhabitat preferences of six Drosera (Droseraceae) from Tibagi river basin, Paraná state, Brazil |
| title_short | Microhabitat preferences of six Drosera (Droseraceae) from Tibagi river basin, Paraná state, Brazil |
| title_sort | microhabitat preferences of six drosera droseraceae from tibagi river basin parana state brazil |
| topic | Ecology carnivorous plants Drosera sundew Brazil Tibagi River Basin |
| url | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132004000400001 |
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