Abstract
This study evaluates the process of ecological restoration by monitoring the height of seedlings of native species in the Cerrado and the factors that affect their growth in riparian forest restoration. The growth pattern of the species were calculated with the average heights, generating linear regression models tested with ANOVA and compared by the likelihood test. The average of the frequencies of leaf herbivory, stem herbivory and absence of sheets (predation, dehydration and malnutrition) was analyzed by cluster analysis (Ward method) as possible factors that influence the growth. The average growth of 13 species was 50.39 cm.year-1, ranging from 15.5 cm.year-1 to 100.1 cm.year-1. Of the thirteen species, eight had growth above 40 cm.year-1, with potential to recover degraded areas. Five species showed significant differences in the linear equations of growth: Calophyllum brasiliense, Croton urucurana, Inga laurina, Myrsine guianensis and Tibouchina stenocarpa. Possible interactions with growth factors (leaf herbivory, stem herbivory and no leaves) resulted in the formation of two groups of species. Among the factors evaluated, overall, the species of both groups had higher leaf herbivory. The leaf herbivores and the absence of leaves affected the two groups differently, which may indicate susceptibility of different species from herbivores. The evaluation of the factors that interfere with growth after planting seedlings can help in adaptive management of areas in restoration process.Keywords: leaf herbivory, stem herbivory, height, recovery of degraded land, gallery forest.
Highlights
Este trabalho avaliou o processo de restauração ecológica por meio do monitoramento da altura das mudas de espécies nativas do Cerrado e dos fatores que afetam o seu crescimento, em área de mata ripária em processo de restauração
This study evaluates the process of ecological restoration by monitoring the height of seedlings of native species in the Cerrado and the factors that affect their growth in riparian forest restoration
The growth pattern of the species were calculated with the average heights, generating linear regression models tested with ANOVA and compared by the likelihood test
Summary
O Centro de Transferência de Tecnologias de Raças Zebuínas com Aptidão Leiteira (CTZL), pertence à Embrapa Cerrados e ocupa uma área de 194 hectares no Núcleo Rural Ponte Alta, no Gama, Distrito Federal, Brasil (15o56’57,27”S e 48o07’28,24” W). No Distrito Federal, a temperatura média anual é cerca de 21oC, com os meses mais quentes registrados em: setembro (23,11°C) e outubro de 2012 (22,91°C); e os mais frios: maio (19,01°C) e julho (19,04°C). A área experimental possui 2,56 ha, localizada na margem direita do Córrego Ponte Alta, dentro da faixa de preservação permanente. O clima é do tipo Aw, segundo Köppen, com verão úmido e chuvoso (outubro a abril) e inverno seco e relativamente frio (maio a setembro), seguindo as características do Bioma Cerrado
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