1. Department of Environmental Conservation University of Massachusetts Amherst Amherst MA USA
2. Northern Research Station USDA Forest Service Hamden CT USA
3. LR161INRGREF01 Laboratory of Management and Valorization of Forest Resources National Institute for Research in Rural Engineering Water and Forest (INRGREF) University of Carthage Ariana Tunisia
4. LR161INRGREF03 Laboratory of Forest Ecology National Institute for Research in Rural Engineering Water and Forest (INRGREF) University of Carthage Ariana Tunisia
5. Department of Ecology & Evolutionary Biology Yale University New Haven CT USA