scholarly journals Fish assemblage patterns across a gradient of flow regulation in an Australian dryland river system

2011 ◽  
Vol 27 (2) ◽  
pp. 168-183 ◽  
Author(s):  
S. R. Balcombe ◽  
A. H. Arthington ◽  
M. C. Thoms ◽  
G. G. Wilson
2013 ◽  
Vol 64 (10) ◽  
pp. 932 ◽  
Author(s):  
L. B. Bucater ◽  
J. P. Livore ◽  
C. J. Noell ◽  
Q. Ye

Estuaries are transition zones that link freshwater and marine ecosystems and are often used as nursery areas by fish. The Murray–Darling Basin, which is heavily affected by flow regulation and water extraction, is the largest river system in Australia and terminates at the Murray Mouth estuary. Protracted drought conditions resulted in extremely low flows to the Murray Mouth that affected water condition, fish abundance, community structure and fish use of the estuary (e.g. nursery areas). The aims of the present study were to examine temporal changes in larval fish assemblages in this estuary. The assemblages were dominated by two gobiid species, Arenigobius bifrenatus and Tasmanogobius lasti. There was a noticeable absence or low abundance of freshwater, diadramous and large-bodied marine species that use this estuary for reproductive functions. Monthly differences in larval fish assemblages, between August–September and October–November, were attributed to increases in the abundances of A. bifrenatus in October and November and oscillation in T. lasti during the entire sampling period. The outcomes of the present study suggested that larval fish assemblages in drought conditions are limited to small-bodied species tolerant of high salinities and that freshwater flows are needed for the estuary to function as a nursery for other species.


2018 ◽  
Vol 88 ◽  
pp. 103-114 ◽  
Author(s):  
Peng Bun Ngor ◽  
Pierre Legendre ◽  
Thierry Oberdorff ◽  
Sovan Lek
Keyword(s):  

2014 ◽  
Vol 352 ◽  
pp. 100-110 ◽  
Author(s):  
Jiaguang Li ◽  
Marinus E. Donselaar ◽  
Seyed Enayat Hosseini Aria ◽  
Roderik Koenders ◽  
Anneleen M. Oyen

2014 ◽  
Vol 54 (5) ◽  
pp. 1090-1101 ◽  
Author(s):  
Helen M. Poulos ◽  
Kate E. Miller ◽  
Michelle L. Kraczkowski ◽  
Adam W. Welchel ◽  
Ross Heineman ◽  
...  

Author(s):  
Marinus E. Donselaar ◽  
Margarita C. Cuevas Gozalo ◽  
Koen A. Toorenenburg ◽  
Jakob Wallinga

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