| Autor: |
Alvaro G. Gutiérrez, Vinci D. Urra, Ignacia P. Guerrero, Stephanie Gibson-Carpintero, Sergio A. Estay, Ronald Rocco, Roberto O. Chávez, Javier A. Domínguez-Concha |
| Rok vydání: |
2020 |
| Předmět: |
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| Zdroj: |
Forest Pest and Disease Management in Latin America ISBN: 9783030351427 |
| DOI: |
10.1007/978-3-030-35143-4_5 |
| Popis: |
Insect outbreaks are among the largest disturbance affecting forest health, and as a consequence of global warming, their frequency can increase and their impact becomes more severe. In the southern tip of South America, massive outbreaks of the native moth Ormiscodes amphimone (Lepidoptera: Hemileucinae) have defoliated large areas of subantarctic Nothofagus pumilio forests. In 2015, the largest Ormiscodes defoliation was documented in the Southern Hemisphere in the valley of El Furioso river (Aysen Region, Chile, 46.8°S). Here, we combined tree-ring and remote sensing analysis to understand the impact of Ormiscodes outbreaks in the N. pumilio forests of this valley. We used MODIS to calculate the Enhanced Vegetation Index (EVI) to detect defoliations and to sample areas where defoliation anomalies were highly frequent (>5 anomalies) and infrequent ( |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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