The British Herpetological Society

The Herpetological Journal is the Society's prestigious quarterly scientific journal. Articles are listed in Biological Abstracts, Current Awareness in Biological Sciences,Current Contents, Science Citation Index, and Zoological Record.

 ISSN 0268-0130

2021 Impact Factor from Clarivate for the Herpetological Journal is 1.194, an increase of 0.332 from 2020.

pdf 03. Collapse of the amphibian community of the Paul do Boquilobo Natural Reserve (central Portugal) after the arrival of the exotic American crayfish Procambarus clarkii


Open Access

pp. 197-204
Authors: Cruz, M.J.; Segurado, P.; Sousa, M. & Rebelo, R.

Abstract: Amphibian populations have suffered declines throughout the world due to factors such as habitat destruction, climate change, chemical pollution or the introduction of exotic species. The correct assessment of the declines, as well as of their causes, is dependent on sound monitoring protocols in selected areas, but medium and long-term studies including data before the declines are extremely rare. The red swamp crayfish, Procambarus clarkii, recently introduced to the Iberian Peninsula, is an efficient predator of amphibian embryos and larvae and recent reports have shown that its presence in a water body is a negative predictor of the presence of amphibian breeding populations. Here we compare data from a survey of the amphibian community of the Paul do Boquilobo Nature Reserve, central Portugal, made in 2001, with data gathered in 1992/93, just after P. clarkii arrived in the reserve. The first survey confirmed the presence of 13 species of amphibians in the reserve, four of them very abundant. In 2001, only six amphibian species were recorded, all in extremely small numbers. In only eight years, most of the previously abundant species strongly declined (e.g. Pleurodeles waltl, Triturus marmoratus and Rana perezi) or went locally extinct (e.g. Hyla arborea and Pelodytes punctatus). However, several species that disappeared from the main water body of the reserve continued to reproduce in nearby ponds without crayfish. Crayfish introduction seems the most probable cause for these declines. Therefore, the survival of several Iberian Peninsula amphibian populations may be dependent upon the correct management of the habitats not easily reached by the crayfish.


Download Access:

The latest 8 issues can be downloaded when logged in with a Herpetological Journal subscription membership.

Individual articles can be purchased for download.

Older issues and occasional Open Access articles are available for public download


For further information and submission guidelines please see our Journal Instructions to Authors

pdfBHS Ethics Policy


Please note that as from Volume 31 Number 1 (January 2021) on, the Herpetological Journal will be available as an online publication only - the last print edition will be Volume 30 Number 4.   

Aligning with this change, it is now no longer possible to purchase a subscription that includes a print copy of the HJ.  All members who have existing HJ print subscriptions that remain active as at end June 2020 will receive the full four 2020 print editions.  New subscribers or renewals after this time will only have option to subscribe to the online only subscription package.  Subscription pricing has been amended to reflect the content changes.