Long‐term patterns in the establishment, expansion and decline of invading macrozoobenthic species in the brackish and marine waters of Southwest Netherlands
Abstract The fluctuations in densities or biomass of a number of invading and native polychaete and mollusc species in the S outhwest N etherlands were compared over a period of 20 years. For recent invaders a lag phase of 7–10 years occurred after their first appearance, followed by an exponential increase in abundance or biomass for 2–3 years. High numbers and biomass then continued for about 5 years, followed by a strong decline. The total sequence from introduction to decline lasted about 15 years. The densities or biomass of invaders appearing decades or even centuries ago in the D elta a... Mehr ...
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Dokumenttyp: | Artikel |
Erscheinungsdatum: | 2013 |
Reihe/Periodikum: | Marine Ecology ; volume 35, issue s1, page 50-55 ; ISSN 0173-9565 1439-0485 |
Verlag/Hrsg.: |
Wiley
|
Sprache: | Englisch |
Permalink: | https://search.fid-benelux.de/Record/base-28808806 |
Datenquelle: | BASE; Originalkatalog |
Powered By: | BASE |
Link(s) : | http://dx.doi.org/10.1111/maec.12085 |
Abstract The fluctuations in densities or biomass of a number of invading and native polychaete and mollusc species in the S outhwest N etherlands were compared over a period of 20 years. For recent invaders a lag phase of 7–10 years occurred after their first appearance, followed by an exponential increase in abundance or biomass for 2–3 years. High numbers and biomass then continued for about 5 years, followed by a strong decline. The total sequence from introduction to decline lasted about 15 years. The densities or biomass of invaders appearing decades or even centuries ago in the D elta area have fluctuated in a similar manner to those of native species, indicating that the densities or biomass of invading species after a 15‐year period of strong changes become governed largely by the same environmental factors as native species. The conclusion may be that after some decades, invading species can become part of a balanced co‐existence with the native species, and that this may yield a net gain in the overall diversity.