@article{BrueggerGobetSigletal.2018,
  author    = {Br{\"u}gger, Sandra Olivia and Gobet, Erika and Sigl, Michael and Osmont, Dimitri and Papina, Tatyana and Rudaya, Natalia and Schwikowski-Gigar, Margit and Tinner, Willy},
  title     = {Ice records provide new insights into climatic vulnerability of Central Asian forest and steppe communities},
  series = {Global and planetary change},
  volume    = {169},
  journal   = {Global and planetary change},
  publisher = {Elsevier},
  address   = {Amsterdam},
  issn      = {0921-8181},
  doi       = {10.1016/j.gloplacha.2018.07.010},
  pages     = {188 -- 201},
  year      = {2018},
  abstract  = {Forest and steppe communities in the Altai region of Central Asia are threatened by changing climate and anthropogenic pressure. Specifically, increasing drought and grazing pressure may cause collapses of moisture-demanding plant communities, particularly forests. Knowledge about past vegetation and fire responses to climate and land use changes may help anticipating future ecosystem risks, given that it has the potential to disclose mechanisms and processes that govern ecosystem vulnerability. We present a unique paleoecological record from the high-alpine Tsambagarav glacier in the Mongolian Altai that provides novel large-scale information on vegetation, fire and pollution with an exceptional temporal resolution and precision. Our palynological record identifies several late-Holocene boreal forest expansions, contractions and subsequent recoveries. Maximum forest expansions occurred at 3000-2800 BC, 2400-2100 BC, and 1900-1800 BC. After 1800 BC mixed boreal forest communities irrecoverably declined. Fires reached a maximum at 1600 BC, 200 years after the final forest collapse. Our multiproxy data suggest that burning peaked in response to dead biomass accumulation resulting from forest diebacks. Vegetation and fire regimes partly decoupled from climate after 1700 AD, when atmospheric industrial pollution began, and land use intensified. We conclude that moisture availability was more important than temperature for past vegetation dynamics, in particular for forest loss and steppe expansion. The past Mongolian Altai evidence implies that in the future forests of the Russian Altai may collapse in response to reduced moisture availability.},
  language  = {en}
}
@misc{KlasenPohlSigl2015,
  author    = {Klasen, Michael and Pohl, Martin and Sigl, G{\"u}nter},
  title     = {Indirect and direct search for dark matter},
  series = {Progress in particle and nuclear physics},
  volume    = {85},
  journal   = {Progress in particle and nuclear physics},
  publisher = {Elsevier},
  address   = {Amsterdam},
  issn      = {0146-6410},
  doi       = {10.1016/j.ppnp.2015.07.001},
  pages     = {1 -- 32},
  year      = {2015},
  abstract  = {The majority of the matter in the universe is still unidentified and under investigation by both direct and indirect means. Many experiments searching for the recoil of dark-matter particles off target nuclei in underground laboratories have established increasingly strong constraints on the mass and scattering cross sections of weakly interacting particles, and some have even seen hints at a possible signal. Other experiments search for a possible mixing of photons with light scalar or pseudo-scalar particles that could also constitute dark matter. Furthermore, annihilation or decay of dark matter can contribute to charged cosmic rays, photons at all energies, and neutrinos. Many existing and future ground-based and satellite experiments are sensitive to such signals. Finally, data from the Large Hadron Collider at CERN are scrutinized for missing energy as a signature of new weakly interacting particles that may be related to dark matter. In this review article we summarize the status of the field with an emphasis on the complementarity between direct detection in dedicated laboratory experiments, indirect detection in the cosmic radiation, and searches at particle accelerators. (C) 2015 Elsevier B.V. All rights reserved.},
  language  = {en}
}