In this article we discuss the possibility that an extraterrestrial species could be hostile to humanity, and present estimates for the probability that visitors to the Earth will be aggressive. For this pur-pose we develop a generic model of multiple civilizations which are permitted to interact

The paper is a report on the occurrence of the species Gammarus tigrinus Sexton, 1939, in the coastal waters of Puck Bay. Many species of benthic invertebrates have been introduced into the Baltic Sea (Leppäkoski 1984, Olenin & Leppäkoski 2001). Many of them, like the hydrozoan Cordylophora

JSTOR is a not-for-profit service that helps scholars, researchers, and students discover, use, and build upon a wide range of content in a trusted digital archive. We use information technology and tools to increase productivity and facilitate new forms of scholarship. For more information about JSTOR, please contact support@jstor.org. Ecological Society of America is collaborating with JSTOR to digitize, preserve and extend access to Frontiers

Abstract There is growing realisation that integrat-ing genetics and ecology is critical in the context of biological invasions, since the two are explicitly linked. So far, the focus of ecological genetics of invasive alien species (IAS) has been on determining the sources and routes of invasions

Bibliographical reference – how to cite this fact sheet: Heger, T. and Böhmer, H.J. (2006): NOBANIS – Invasive Alien Species Fact Sheet – Senecio inaequidens. – From: Online Database of the European Network on Invasive Alien Species – NOBANIS www.nobanis.org. Date of access x/x/201x.

Abstract We present a contribution to the knowledge of marine and brackish water alien species (infraspecific taxa included) recorded along the Italian coasts. The Italian Peninsula, with over

EASIN-Lit: a geo-database of published alien species records

In Austria, three indigenous crayfish species occur: the noble crayfish (Astacus astacus), the stone crayfish (Austropotamobius torrentium), and the white-clawed crayfish (Austropotamobius pallipes). It is not known if Astacus leptodactylus is autochthonous in the very eastern part of Austria, near

On behalf of the Federal Environmental Agency Publications by the Federal Environmental Agency in the TEXTE series are available subject to advance payment of 10,00 Euro by bank transfer, crossed cheque or paying-in form to

environmental Anticipated costs of meeting the Aichi Biodiversity Targets for 2020: