Abstract: The nektons in an intertidal creek of a newly formed salt marsh at Yangtze River estuary were sampled by Fyke net to assess its habitat utilization of the salt marsh. A total of 20 nekton species were recorded in three investigations, including 15 fishes and 5 crustaceans. Among the nektons, freshwater species (10 species) were the most abundant ecological groups, followed by estuarine (6 species), migratory (3 species), and coastal species (1 species). In term of numeric abundance, the nektons were highly dominated by Exopalaemon annandalei (35.4%), Acanthogobius luridus (177%), Hemiculter leucisculus (177%), Saurogobio dumerili (92%), and Marobrachium nipponensis (46%). Most of the nektons sampled in this study were juveniles, suggesting that the newly formed salt marsh was the important nursery habitat for many fishes and crustaceans.

Key words: Arbuscular mycorrhizal fungi, Steppe plants, Environmental factors, Tibet Plateau