Pesquisa Florestal Brasileira (Dec 2010)
Ecological corridors as an instrument for the desfragmentation of tropical forests Corredores ecológicos como ferramenta para a desfragmentação de florestas tropicais
Abstract
<p>The expansion of the human land use leads to a severe fragmentation of the natural habitats. Biological corridors may facilitate the movement of organisms among habitat patches and have been frequently adopted as a tool to conserve and restore biodiversity. Metapopulation theory gives the theoretical starting point for the actual biological corridors studies, which are still in their infancy. There are not yet a solid scientific knowledge to recommend the use of biological corridors as a tool in conservation biology. Nevertheless, the effects of forest fragmentation are so severe that the planning and executing of strategies to attenuate it are justifiable, even though research results demonstrating its effectiveness and benefits are not available.<!--[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 /> 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margin-bottom:.0001pt; mso-pagination:none; mso-hyphenate:none; font-size:12.0pt; font-family:"Liberation Serif","serif"; mso-fareast-font-family:"DejaVu Sans"; mso-hansi-font-family:"Liberation Serif"; mso-bidi-font-family:"Times New Roman"; mso-font-kerning:.5pt; mso-fareast-language:AR-SA;} .MsoChpDefault {mso-style-type:export-only; mso-default-props:yes; font-size:10.0pt; mso-ansi-font-size:10.0pt; mso-bidi-font-size:10.0pt;} @page WordSection1 {size:612.0pt 792.0pt; margin:70.85pt 3.0cm 70.85pt 3.0cm; mso-header-margin:36.0pt; mso-footer-margin:36.0pt; mso-paper-source:0;} div.WordSection1 {page:WordSection1;} --> <!--[if gte mso 10]> <mce:style><! /* Style Definitions */ table.MsoNormalTable {mso-style-name:"Tabela normal"; mso-tstyle-rowband-size:0; mso-tstyle-colband-size:0; mso-style-noshow:yes; mso-style-priority:99; mso-style-qformat:yes; mso-style-parent:""; mso-padding-alt:0cm 5.4pt 0cm 5.4pt; mso-para-margin:0cm; mso-para-margin-bottom:.0001pt; mso-pagination:widow-orphan; font-size:11.0pt; font-family:"Calibri","sans-serif"; mso-ascii-font-family:Calibri; mso-ascii-theme-font:minor-latin; mso-fareast-font-family:"Times New Roman"; mso-fareast-theme-font:minor-fareast; mso-hansi-font-family:Calibri; mso-hansi-theme-font:minor-latin; mso-bidi-font-family:"Times New Roman"; mso-bidi-theme-font:minor-bidi;} --></p><p>doi: 10.4336/2010.pfb.30.63.207</p>A expansão do uso e ocupação antrópica do espaço terrestre leva a uma severa fragmentação dos habitats naturais. Corredores ecológicos podem facilitar o deslocamento de organismos entre fragmentos de habitats e têm sido cada vez mais adotados como uma ferramenta para manter e restaurar a biodiversidade. A teoria da metapopulação é uma das bases para os atuais estudos sobre corredores ecológicos. Esses estudos ainda estão pouco desenvolvidos, especialmente em ecossistemas tropicais, carecendo de bases científicas sólidas para apoiar a sua utilidade. No entanto, os efeitos da fragmentação florestal são tão severos que é justificável o planejamento e a execução de medidas que busquem atenuá-las, apesar de não estarem disponíveis resultados de pesquisas que demonstrem a eficácia ou mesmo o acerto destas medidas.<br /><br />doi: 10.4336/2010.pfb.30.63.207<br />
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