FORÓFITOS PREFERENCIAIS DE ORQUÍDEAS EPÍFITAS NA APA ILHA DO COMBU, BELÉM, PARÁ, BRASIL
2015
Tonny David Santiago Medeiros | Mário Augusto Gonçalves Jardim | Adriano Costa Quaresma
葡萄牙语. <!--[if gte mso 9]><xml> <o:OfficeDocumentSettings> <o:RelyOnVML /> <o:AllowPNG /> </o:OfficeDocumentSettings> </xml><![endif]--> <p class="MsoNormal" style="margin-right: -3.3pt; text-align: justify;">Foi avaliada a correlação da abundância de orquídeas epífitas com o tipo de casca dos forófitos e a influência do DAP sobre a abundância e a riqueza na Área de Proteção Ambiental (APA) Ilha do Combu, Belém, Pará, Brasil. O estudo foi realizado em 2,85 ha, a partir da demarcação de 114 transectos de 5 m x 50 m, onde foram mensurados todos os forófitos com DAP ≥ 20 cm e anotadas as características da casca, e identificadas as orquídeas epífitas. <span style="mso-bidi-font-weight: bold;">A correlação entre o tipo de casca dos forófitos e a abundância de orquídeas foi verificada através do número de epífitas por forófitos na espécie arbórea <em style="mso-bidi-font-style: normal;">x</em>, e também da razão (n.° epífitas/n.° forófitos) para forófitos rugosos e não-rugosos. Os diâmetros foram categorizados em classes para verificar a influência do DAP sobre a abundância e a riqueza.</span> Trinta e cinco espécies de forófitos (73%) apresentaram casca rugosa, com destaque para <em style="mso-bidi-font-style: normal;">Hevea brasiliensis e <em style="mso-bidi-font-style: normal;">Carapa guianensis que foram os mais amostrados (58 e 42) e mais expressivos em número de orquídeas epífitas; a razão de epífitas por forófitos foi maior em troncos com casca não-rugosa. As classes de diâmetro 2 (31,8┤63,7) e 3 (63,7┤95,5) registraram as maiores abundâncias de orquídeas epífitas. A abundância de orquídeas epífitas é influenciada pela rugosidade da casca e correlacionada aos maiores diâmetros dos forófitos. <!--[if gte mso 9]><xml> <w:WordDocument> <w:View>Normal</w:View> <w:Zoom>0</w:Zoom> <w:TrackMoves /> <w:TrackFormatting /> <w:HyphenationZone>21</w:HyphenationZone> <w:PunctuationKerning /> <w:ValidateAgainstSchemas /> <w:SaveIfXMLInvalid>false</w:SaveIfXMLInvalid> <w:IgnoreMixedContent>false</w:IgnoreMixedContent> <w:AlwaysShowPlaceholderText>false</w:AlwaysShowPlaceholderText> <w:DoNotPromoteQF /> <w:LidThemeOther>PT-BR</w:LidThemeOther> <w:LidThemeAsian>X-NONE</w:LidThemeAsian> <w:LidThemeComplexScript>X-NONE</w:LidThemeComplexScript> <w:Compatibility> <w:BreakWrappedTables /> <w:SnapToGridInCell /> <w:WrapTextWithPunct /> <w:UseAsianBreakRules /> <w:DontGrowAutofit /> <w:SplitPgBreakAndParaMark /> <w:DontVertAlignCellWithSp /> <w:DontBreakConstrainedForcedTables /> <w:DontVertAlignInTxbx /> <w:Word11KerningPairs /> <w:CachedColBalance /> 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