Zoeken
Zoeken kan via de modus 'eenvoudig zoeken' (één veld) of uitgebreid via 'geavanceerd zoeken' (meerdere velden). Zo kan je bv. zoeken op een combinatie van een auteursnaam (auteur), een jaartal (jaar) en een documenttype.
Boekenmand
Nuttige resultaten kan je aanvinken en toevoegen aan een mandje. De inhoud hiervan kan je exporteren of afdrukken (naar bv. PDF).
RSS
Op de hoogte blijven van nieuw toegevoegde publicaties binnen uw interessegebied? Dit kan door een RSS-feed (?) te maken van jouw zoekopdracht.
nieuwe zoekopdracht
Effects of mean intensity and temporal variance of sediment scouring events on assemblages of rocky shores
Vaselli, S.; Bertocci, I.; Maggi, E.; Benedetti-Cecchi, L. (2008). Effects of mean intensity and temporal variance of sediment scouring events on assemblages of rocky shores. Mar. Ecol. Prog. Ser. 364: 57-66. http://dx.doi.org/10.3354/meps07469
In: Marine Ecology Progress Series. Inter-Research: Oldendorf/Luhe. ISSN 0171-8630; e-ISSN 1616-1599, meer
|   |
| Trefwoorden |
Climatic changes
Disturbance (ecosystem)
Ecological diversity
Erosion > Scouring
Sedimentation
Temporal variations
Marien/Kust |
| Author keywords |
climate change; disturbance; diversity; scour; sedimentation; temporalvariance |
| Auteurs | | Top |
- Vaselli, S.
- Bertocci, I.
- Maggi, E.
- Benedetti-Cecchi, L.
|
|
|
| Abstract |
Climatic models predict an increase in temporal variance and intensity of extreme events such as storms and rainfall for the near future. These events are likely to modify current patterns of sediment delivery on rocky shores. We used a factorial experiment to test the hypothesis that changes in intensity and temporal variance of disturbance due to scouring of sediment affected the establishment of algae and invertebrates on a rocky shore in the northwest Mediterranean. The experimental design included replicated sequences of disturbance events within the high level of temporal variance, so that the effect of variance could be separated from effects associated with any particular sequence of events. Multivariate analyses showed a trend towards an interaction between intensity and temporal variance of disturbance, with assemblages exposed to a combination of low intensity and high temporal variance of disturbance being distinguished from the other assemblages. Similar patterns were displayed by filamentous and coarsely branched algae. Temporal variance enhanced their cover under low intensity of disturbance, whilst the opposite occurred under high intensity. Increasing intensity of disturbance reduced the mean number of taxa in experimental areas regardless of levels of temporal variance. Sequence of disturbance was also significant for all these response variables. These results support the proposition that changes in intensity and temporal variance of disturbance by sediment may have reverberating effects on the structure and diversity of rocky shores assemblages, contributing to explain regime shifts in marine coastal habitats such as the replacement of canopy algae by turf-forming species. |
IMIS is ontwikkeld en wordt gehost door het VLIZ.
