Hansen, Steen

Hansen, Steen; Hattendorf, Jan; Nielsen, Charlotte; Wittenberg, Rüdiger; Nentwig, Wolfgang (2007). Herbivorous arthropods on Heracleum mantegazzianum in its native and invaded disribution range. In: Pseyk, Petr; Cock, Matthew; Nentwig, Wolfgang; Ravn, Hans Peter (eds.) Ecology and Management of Giant Hogweed (Heracleum mantegazzianum) (pp. 170-188). Wallingford: CAB International

Hattendorf, Jan; Hansen, Steen; Nentwig, Wolfgang (2007). Defence systems of Heracleum mantegazzianum. In: Pseyk, Petr; Cock, Matthew; Nentwig, Wolfgang; Ravn, Hans Peter (eds.) Ecology and Management of Giant Hogweed (Heracleum mantegazzianum) (pp. 209-225). Wallingford: CAB International

Hansen, Steen; Hattendorf, Jan; Nentwig, Wolfgang (2006). Mutualistic relationship beneficial for aphids and ants on giant hogweed (Heracleum mantegazzianum). Community ecology, 7(1), pp. 43-52. Budapest: Akadémiai Kiadó 10.1556/ComEc.7.2006.1.5

Hansen, Steen; Hattendorf, Jan; Wittenberg, Ruediger; Reznik, Sergey; Nielsen, Charlotte; Ravn, Hans Peter; Nentwig, Wolfgang (2006). Phytophagous insects of giant hogweed Heracleum mantegazzianum (Apiaceae) in invaded areas of Europe and in its native area of the Caucasus. European journal of entomology, 103(2), pp. 387-395. České Budějovice (Czech Republic): Institute of Entomology, Czech Academy of Sciences :

Hattendorf, Jan; Hansen, Steen; Reznik, Sergey; Nentwig, Wolfgang (2006). Herbivore impact versus host size preference: Endophagous insects on Heracleum mantegazzianum in its native range. Environmental entomology, 35(4), pp. 1013-1020. College Park, Md.: Oxford University Press 10.1603/0046-225X-35.4.1013