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| Nagubadi, Rao V.; Zhang, Daowei. |
| Land use changes and timberland use by ownership and forest type in Alabama and Georgia between 1972 and 2000 are analyzed using a modified multinomial logit approach. Low average land quality, federal cost-share incentives, and favorable returns to forestry relative to agriculture were the main factors associated with timberland increase. Higher forestry returns helped increase industrial timberland but not nonindustrial private forests. An increase in hardwood forests at the expense of softwood and mixed forests was driven by increasing hardwood returns. Increasing softwood returns and tree planting assistance programs alleviated declines in softwood forests. Because factors influencing timberland use changes differ by ownership and forest type,... |
| Tipo: Journal Article |
Palavras-chave: Forest type; Land use determinants; Modified multinomial logit; Timberland ownership; Land Economics/Use; Q15; Q23; R15. |
| Ano: 2005 |
URL: http://purl.umn.edu/43726 |
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| Tovar-Sánchez,Efraín; Martí-Flores,Erwin; Valencia-Cuevas,Leticia; Mussali-Galante,Patricia. |
| BACKGROUND: Quercus crassifolia is an oak species with characteristics of foundation species, which is a canopy dominant element of different forest types that supports a wide diversity of associated species. Therefore, it is an excellent system to address important ecological questions. We analyzed the effect of individual genetic relatedness of the host plant, forest type (Abies-Quercus, Quercus-Pinus, and Quercus forest), and season (dry vs. rainy) on the canopy arthropod community structure. Thirty oak canopies were fogged (five individuals/season/forest type). RESULTS: We identified 442 arthropod species belonging to 22 orders. The highest values of density, diversity, and richness were recorded during the rainy season for each forest type. Also, the... |
| Tipo: Journal article |
Palavras-chave: Quercus; Foundation species; Individual genetic diversity; Microsatellites; Forest type; Arthropods community. |
| Ano: 2015 |
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0716-078X2015000100007 |
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