Department of Ecology – Research

Invasive Alien Species (Neobiota)

See for extensive details on invasive alien species (IAS) in Luxembourg.

General inventories, studies and conferences

  • Inventories of invasive alien vascular plants (2006-2018)
  • Monitoring of selected invasive neophytes along the major rivers of Luxembourg (2010-2020)
  • Screening for invasive alien species in the former open pit mines of Terres Rouges: Prunus laurocerasus, Rhus typhina, Senecio inaequidens, Solidago canadensis, Solidago gigantea (2018-2019).
  • First records of invasive alien species in Luxembourg (2017-2018)

Single IAS inventories and studies

  • Aedes albopictus (Asian tiger mosquito): screening for alien mosquito species in Luxembourg (2016-2017)
  • Ambrosia artemisiifolia (Common ragweed) in Luxembourg (2007)
  • Heracleum mantegazzianum (Giant hogweed) in Luxembourg (2008)
  • Impatiens glandulifera (Himalayan balsam): management along the river Blees (2017-2020)
  • Prunus laurocerasus (Cherry laurel): screening and management in woodland ecosystems (2018-2020)
  • Senecio inaequidens (narrow-leaved ragwort): distribution along motorways and feeder roads (2014)
Heracleum mantegazzianum

Eradication  of Giant Hogweed (Heracleum mantegazzianum) in the upper Sure nature park.

Determination of mosquito catches in the Lab of the Department of Ecology. F.l.t.r.: Svenja Christian (Department of Invertebrates Zoology MNHNL) and Dr Francis Schaffner (University of Zurich).

Risc assessments

  • Environmental impact assessment and alert, black and watch list classification after the ISEIA protocol for Luxembourg of
    • vascular plants (2012-2013, PDF)
    • vertebrates (2013-2014, PDF)
    • invertebrates (2014-2015, PDF)
  • Risk assessment of invasive alien species in Luxembourg after the Harmonia+ protocol in cooperation with the Belgian Forum on Invasive Species (BFIS) at the Belgian Biodiversity Platform (2017-2018).

EU COST Actions

The curator was / is member of the management committee of the following COST actions (European Cooperation in Science and Technology):

Flora and vegetation of Luxembourg

Floristic and vegetation studies

  • Overview on phytosociological works about Luxembourg (cf. online list)
  • Grass land vegetation (Ferrantia 66)
  • Forest vegetation (Ferrantia 57)
  • Arable land vegetation
    • Inventory of the weed flora of arable land (2010-2014)
    • Inventory of the weed flora of kitchen gardens (2010-2012)
  • Ruderal vegetation
    • Floristic inventories of selected castles in Luxembourg (2011-2014)
    • Screening for salt-tolerant plant species (halophytes) in roadside vegetation in Luxembourg (2017-2018)

Ries C & Y Krippel (editors) (2005) Sandstone Landcapes in Europe. Ferrantia 44.

Niemeyer T, C Ries & W Härdtle (2010). Die Waldgesellschaften Luxemburgs. Ferrantia 57.

Simone Schneider (2011). Die Graslandgesellschaften Luxemburgs. Ferrantia 66.

Further topics

  • Luxembourgian vernacular names of vascular plants in Luxembourg (2017-2022)
  • Vegetation mapping of the low moor areas “Bruch” near Rombach-Martelange and “Sauerwisen” at Huldange (2016-2022)
  • Distribution of Lamium galeobdolon L. and it’s subspecies in the Grand Duchy of Luxembourg (2011-2012) → abstract

Meteorology and climatology of Luxembourg

  • Contribution à la climatologie du Luxembourg. Analyses historiques, scénarios futurs. (Ferrantia 43)
  • Climatic atlas of Luxembourg, 2005 (climate normals 1971-2000)  (
  • MONEAU – Monograph on climatology, meteorology and hydrology of Luxembourg (2006-2010) (
  • Impact of climatic change on competition behaviour of Fagus sylvatica and Quercus petraea (2008-2011)

Ries C (éditeur) (2005) Contribution à la climatologie du Luxembourg. Ferrantia 43.

Pfister L, Wagner C, Vansuypeene E, Drogue G, Hoffmann L (2005) Atlas climatique du grand-duché de Luxembourg.

Freyermuth A & L Pfister (2010) Monographie hydro-climatologique du Luxembourg. 2 vols. 9418 p. [coll.: C Ries, N Martínez–Carreras, C Tailliez, L Hoffmann, D Buchel, P Lepesant, R Schoder et L Wietor.]