Angeler, David
- Institutionen för vatten och miljö, Sveriges lantbruksuniversitet
Sammanfattning
In this study we compare phytoplankton community similarity between sites in a semiarid floodplain wetland over a 6-year period with variable hydroperiod and connectivity regimes. Phytoplankton communities showed a relatively high site idiosyncrasy during most parts of the study; however, during situations of low connectivity when individual sites were highly fragmented, phytoplankton communities occasionally became more similar between sites. This suggests that mass effects related to dispersal-mediated processes could be important. Viewed from a metacommunity perspective, phytoplankton community assembly at the wetland scale involves complex hierarchical processes that can act independently at different spatial extents. The main conclusion of this study is that the well-known effects of environmental variability associated with hydrological disturbance alone may not be sufficient for explaining, and by extension predicting, community assembly in this wetland. Other processes, perhaps involving overland dispersal, may eventually add a new dimension to, and complicate our understanding of, community processes in fluctuating wetlands.
Nyckelord
Community structure; Dispersal; Wetlands; Environmental fluctuation; Metacommunity ecology
Publicerad i
Ecological Research
2010, volym: 25, nummer: 3, sidor: 513-520
Utgivare: SPRINGER TOKYO
SLU författare
UKÄ forskningsämne
Ekologi
Miljövetenskap
Publikationens identifierare
- DOI: https://doi.org/10.1007/s11284-009-0681-7
Permanent länk till denna sida (URI)
https://res.slu.se/id/publ/59878