Gian-Reto Walther

TL;DR: It is emphasised that global warming has enabled alien species to expand into regions in which they previously could not survive and reproduce and management practices regarding the occurrence of 'new' species could range from complete eradication to tolerance.

TL;DR: There is need not only to continue to focus on the impacts of climate change on the actors in ecological networks but also and more intensively tofocus on the linkages between them, and to acknowledge that biotic interactions and feedback processes lead to highly complex, nonlinear and sometimes abrupt responses.

TL;DR: It is shown that microclimatic effects brought about by forest canopy closure can buffer biotic responses to macroclimate warming, thus explaining an apparent climatic lag.

TL;DR: It is found that both climate change and alien species will ultimately lead to the creation of novel communities, and certain interactions may no longer occur while there will also be potential for the emergence of new relationships.

TL;DR: In this paper, the contribution of atmospheric nitrogen (N) deposition versus other ecological drivers on forest understorey plant communities by combining a temporal and spatial approach was assessed by combining data from 1205 (semi-permanent vegetation plots taken from 23 rigorously selected under-storey resurvey studies along a large deposition gradient across deciduous temperate forest in Europe.