objective	SHAPE- The impact of forest management intensity and neighborhood diversity on tree crown attributes
content	The structure and shape of a tree crowns is related to tree growth and is of special importance for species of various taxa. It is well known that crown dimensions can be controlled by forest management. However, information on how silvicultural interventions and competition by neighboring trees modify the shape of tree crowns and branch ramification structure is scarce. This project uses terrestrial laser scanning to provide such information based on three-dimensional models of trees that grew up in stands that are characterized by different management intensities and species diversity. Furthermore, the unique spatial information will be used to measure and compare three-dimensional space filling in forest stands of varying management intensities and species diversity.
appropriation period	01.04.2014-31.03.2017
funded by	German Science Foundation
partners	Biodiversity Exploratories (DFG Priority Programm 1374)
person in charge	Julia Juchheim and Dr. Dominik Seidel
publications	Juchhheim J, Ehbrecht M, Schall P, Ammer C, Seidel D (2020) Effect of tree species mixing on stand structural complexity. Forestry 93: 75-83, DOI:10.1093/forestry/cpz046 Juchheim J, Ammer C, Schall P, Seidel D (2017) Canopy space filling rather than conventional measures of structural diversity explains productivity of beech stands. Forest Ecology and Management 395: 19-26 Juchheim J, Annighöfer P, Ammer C, Calders K, Raumonen P, Seidel D (2017): How management intensity and neighborhood composition affect the morphology of beech (Fagus sylvatica L.) trees. Trees – Structure and Function 31: 1723-1735. DOI 10.1007/s00468-017-1581-z Allan E, Bossdorf O, Dormann CF, Prati D, Gossner MM, Tscharntke T, Blüthgen N, Bellach M, Birkhofer K, Boch S, Böhm S, Börschig C, Chatzinotas A, Christ S, Daniel R, Diekötter T, Fischer C, Friedl T, Glaser K, Hallmann C, Hodac L, Hölzel N, Jung K, Klein AM, Klaus VH, Kleinebecker T, Krauss J, Lange M, Morris EK, Müller J, Nacke H, Pasalic E, Rillig MC, Rothenwöhrer C, Schall P, Scherber C, Schulze W, Socher SA, Steckel J, Steffan-Dewenter I, Türke M, Weiner CN, Werner M, Westphal C, Wolters V, Wubet T, Gockel S, Gorke M, Hemp A, Renner SC, Schöning I, Pfeiffer S, König-Ries B, Buscot F, Linsenmair KE, Schulze E-D, Weisser WW, Fischer M (2014) Interannual variation in land-use intensity enhances grassland multidiversity. Proceedings of the National Academy of Sciences 111 (1): 308-313. doi:10.1073/pnas.1312213111 Ehbrecht M, Schall P, Juchheim J, Ammer C, Seidel D (2016) Effective number of layers: a new measure for quantifying vertical stand structure based on terrestrial LiDAR. Forest Ecology and Management 380: 212-223 Schall P, Ammer C (2013) How to quantify forest management intensity in Central European Forests. European Journal of Forest Research 132: 379-396. DOI: 10.1007/s10342-013-0681-6