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Christian Ammer
University of Göttingen
141Publications
24H-index
2,387Citations
Publications 141
Newest
Published on Jan 29, 2019in Forest Ecosystems
Ernst-Detlef Schulze111
Estimated H-index: 111
(MPG: Max Planck Society),
Dylan Craven19
Estimated H-index: 19
+ 8 AuthorsChristian Ammer24
Estimated H-index: 24
(GAU: University of Göttingen)
Background The global decrease in wildlife populations, especially birds, is mainly due to land use change and increasing intensity of land use (Parmesan and Yohe 2003). However, impacts of management tools to mitigate biodiversity loss at regional and global scales are less apparent in forest regions that have a constant forest area, and which did not suffer from habitat degradation, and where forests are sustainably managed, such as in Central Europe or the northeastern USA. A biodiversity ass...
Published on Nov 1, 2019in Agriculture, Ecosystems & Environment3.95
Delphine Clara Zemp8
Estimated H-index: 8
(GAU: University of Göttingen),
Martin Ehbrecht5
Estimated H-index: 5
(GAU: University of Göttingen)
+ 7 AuthorsHolger Kreft36
Estimated H-index: 36
(GAU: University of Göttingen)
Abstract Conversion of structurally complex rainforests into simplified oil palm monocultures leads to dramatic losses of biodiversity and ecosystem functioning. To alleviate negative ecological impacts, enrichment with native tree species may rapidly restore structural complexity in existing oil palm plantations. However, the mechanisms underlying the recovery of structural complexity in mixed-species tree plantings remain poorly understood. We measured structural complexity from terrestrial la...
Published on 2019in Agricultural and Forest Meteorology4.19
Dominik Seidel14
Estimated H-index: 14
(GAU: University of Göttingen),
Martin Ehbrecht5
Estimated H-index: 5
(GAU: University of Göttingen)
+ 1 AuthorsChristian Ammer24
Estimated H-index: 24
(GAU: University of Göttingen)
Abstract Management for complexity has become an important paradigm for European and North American forestry. Recent advancements in data processing allow for a detailed, three-dimensional and objective quantification of structural complexity in forests based on terrestrial laser scanning data. In our study, we used such 3D data from an exemplary temperate broad-leaved forest in Thuringia, Germany, to gain insights to the relationship between tree-level structural complexity and stand-level stru...
Published on 2019in Forests2.12
Katharina Burkardt , Peter Annighöfer11
Estimated H-index: 11
+ 2 AuthorsTorsten Vor14
Estimated H-index: 14
Accurate guidelines for silvicultural management of exotic tree species in Germany are sparse. For example, northern red oak (Quercus rubra L.) is the most commonly planted exotic deciduous tree species in Germany, but its response to varying levels of competition intensity has not yet been adequately explored. Here, we used terrestrial laser scanning to non-destructively examine the responses of stem and crown characteristics of Quercus rubra to intraspecific competition. A total of 100 dominan...
Published on Oct 1, 2019in European Journal of Wildlife Research1.18
Anke Benten2
Estimated H-index: 2
(GAU: University of Göttingen),
Niko Balkenhol21
Estimated H-index: 21
(GAU: University of Göttingen)
+ 1 AuthorsChristian Ammer24
Estimated H-index: 24
(GAU: University of Göttingen)
Collisions of vehicles with wildlife pose a serious risk to humans and animals, causing great financial and ecological damage each year. While various mitigation measures have been developed, only a few are economically and logistically feasible. Among these, wildlife warning reflectors arguably enjoy the greatest popularity, although recent studies have shown that they have no long-term impact on wildlife-vehicle collisions or on the behavior of animals along roads. However, belief in their tem...
Published on 2019in Forestry2.88
Julia Juchheim4
Estimated H-index: 4
,
Martin Ehbrecht5
Estimated H-index: 5
+ 2 AuthorsDominik Seidel14
Estimated H-index: 14
Published on 2019in bioRxiv
Franziska M. Willems1
Estimated H-index: 1
(University of Tübingen),
Niek J. F. Scheepens (University of Tübingen)+ 5 AuthorsOliver Bossdorf29
Estimated H-index: 29
(University of Tübingen)
Many organisms respond to anthropogenic environmental change through shifts in their phenology. In plants, flowering is largely driven by temperature, and therefore affected by climate change. However, on smaller scales climatic conditions are also influenced by other factors, including habitat structure. A group of plants with a particularly distinct phenology are the understorey herbs in temperate forests. In these forests, management alters tree species composition and stand structure and, as...
Published on 2019in Trees-structure and Function1.80
Jérôme Metz2
Estimated H-index: 2
(GAU: University of Göttingen),
Peter Annighöfer11
Estimated H-index: 11
(GAU: University of Göttingen)
+ 3 AuthorsChristian Ammer24
Estimated H-index: 24
(GAU: University of Göttingen)
Key Message Species-specific neighborhood identity effects such as competition reduction or facilitation can positively influence growth patterns of Fagus sylvatica at a given site, but are not strong enough to overcome fundamental growth–environment interactions of European beech.
Published on Jun 21, 2019in Journal of Applied Ecology5.78
Delphine Clara Zemp8
Estimated H-index: 8
(GAU: University of Göttingen),
Anne Gérard2
Estimated H-index: 2
(GAU: University of Göttingen)
+ 5 AuthorsHolger Kreft36
Estimated H-index: 36
(GAU: University of Göttingen)
Published on 2019in Forests2.12
Melissa Stiers1
Estimated H-index: 1
,
Katharina Willim1
Estimated H-index: 1
+ 4 AuthorsPeter Annighöfer11
Estimated H-index: 11
The use of natural regeneration techniques is one of the key elements of modern (close-to-nature) forestry. In natural forests, changes in canopy cover, such as the emergence and successive re-closure of canopy gaps are particularly important, as they influence the light availability on the forest floor. Creating canopy gaps of different size is a promising silvicultural tool allowing the regulation of the light availability in managed forests in order to control regeneration composition and dev...
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