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Göteborgs universitets publikationer

Spatial patterns and environmental correlates in leaf-associated epifaunal assemblages of temperate seagrass (Zostera marina) meadows

Författare och institution:
Martin Gullström (Institutionen för biologi och miljövetenskap); Susanne P. Baden (Institutionen för biologi och miljövetenskap); Mats Lindegarth (Institutionen för biologi och miljövetenskap, Tjärnö marinbiologiska laboratorium)
Publicerad i:
Marine Biology, 159 ( 2 ) s. 413-425
Artikel, refereegranskad vetenskaplig
Sammanfattning (abstract):
We estimated and tested variability of seagrass leaf-associated epifaunal assemblages at a range of scales. Sampling was performed in 36 seagrass (Zostera marina) meadows within three regions along the Swedish west coast following a hierarchical design (samples separated by 10 s m, km or 100 km). Results showed strongest variability (43-81%) at the intermediate amongst-meadow (km) scale using biomass of functional categories, while considering taxa composition the within-meadow (10 s m) scale contributed most to variability (60%). Using functional categories, we found that embayment exposure and seagrass shoot density were the most important predictor variables explaining part of the variability in biomass of suspension feeders (bivalves and barnacles) and grazers. In contrast, variability in epifaunal taxa composition was predicted mainly by sediment chemistry, substratum coverage and geographical positioning. Our findings suggest that models to develop predictive power and mechanistic understanding should focus on variables and processes varying at small and intermediate scales rather than those varying at larger scales.
Ämne (baseras på Högskoleverkets indelning av forskningsämnen):
Biologiska vetenskaper ->
Ekologi ->
Marin ekologi
western-australia, coastal waters, amphibolis-griffithii, epiphytic macroalgae, trophic interactions, posidonia-australis, population-dynamics, nutrient enrichment, community structure, algal epiphytes
Postens nummer:
Posten skapad:
2013-01-07 18:15
Posten ändrad:
2013-01-09 15:51

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