Bosmina remains in lake sediment as indicators of zooplankton community composition

2009 ◽  
Vol 43 (1) ◽  
pp. 51-59 ◽  
Author(s):  
M. L. Alexander ◽  
S. C. Hotchkiss
1984 ◽  
Vol 22 (1) ◽  
pp. 525-532
Author(s):  
John E. Gannon ◽  
Roberta K. Cap ◽  
Kenton M. Stewart ◽  
Wilbur A. Stewart

2017 ◽  
Vol 68 (1) ◽  
pp. 76 ◽  
Author(s):  
Alicia K. Catlin ◽  
Kevin J. Collier ◽  
Ian C. Duggan

We investigated the potential for zooplankton to emerge following inundation of dry soils on the lower Waikato River floodplain, North Island, New Zealand. Soil cores were collected from native forest remnants, scrub (predominantly Salix spp.) and pasture, and from sites inside or outside of stopbanks, to examine the effects of vegetation type and hydrological disconnection. We hypothesised that more larger-bodied zooplankton would emerge from forested floodplain areas, and that areas with high connectivity with the river would produce more zooplankton. Zooplankton appeared from soil cores within 3 days of wetting and no new taxa arose after 12 days. Community composition differed between vegetation types, with larger bodied cladocerans and copepods dominating forested and scrub sites, and rotifers dominating pastoral sites. Connectivity did not play a statistically significant role in determining community composition. Soil conditions were implicated as important in affecting emergent zooplankton community composition, with copepods and cladocerans characteristic of sites with wetter soils and bdelloid rotifers abundant in open sites with higher soil temperatures. Our findings indicate scrub and forested floodplains can be important areas for large-bodied zooplankton production, and that maintaining vegetative heterogeneity on floodplains may promote trophic subsidies for migrating juvenile fish as floodwaters subside.


Ecosphere ◽  
2015 ◽  
Vol 6 (6) ◽  
pp. art105 ◽  
Author(s):  
Mireia Bartrons ◽  
Árni Einarsson ◽  
Regina L. G. Nobre ◽  
Cristina M. Herren ◽  
Kyle C. Webert ◽  
...  

2019 ◽  
Vol 81 (4) ◽  
Author(s):  
Brenda A. Witt ◽  
Jessica E. Beyer ◽  
Thayer C. Hallidayschult ◽  
K. David Hambright

Author(s):  
A. Greenwood ◽  
R.M. O'Riordan ◽  
D.K.A. Barnes

Zooplankton was collected by a diver-towed net close to the substratum at four depths (0, 6, 12 and 18 m) over a 17 month period in three locations in Lough Hyne, Co. Cork, Ireland. Zooplankton was identified to phylum or class levels and mean numbers were calculated for each taxon, site and depth. Seasonality was observed in several meroplanktonic groups (Echinodermata, Nemertea, Mollusca and fish postlarvae), and in gelatinous zooplankton. Depth preference was found to be statistically significant in the polychaetes (larvae and pelagic species), molluscan and ascidian larvae. However, the influence of depth on overall zooplankton community composition was found to be negligible. Sampling location, adjacent substrata and flow conditions were found to influence zooplankton in that area.


Author(s):  
Christine N.W. Lee ◽  
Brian Morton

Crab-baited traps, with a 5-mm diameter opening, were deployed 90 mm off the seabed monthly at Lobster Bay, Hong Kong, for one year between 1998 and 1999. Visitors drawn to the traps were mainly species of Ceradocus (Gammaridea: Melitidae), Tisbe (Harpacticoida: Tisbidae) and Nebalia (Leptostraca: Nebaliacea). Apart from Ceradocus sp., all were scavengers with catches using baited traps significantly exceeding unbaited controls. Ceradocus sp. was apparently drawn to traps for refuge. The trapped scavenger community composition changed with deployment duration in the presence of bait. Nebalia sp., Neanthes cricognatha (Polychaeta: Nereidae) and Lepedepecreum sp. (Gammaridea: Lysianassoidea) were identified mostly two/three-days post-deployment, exhibiting a potential preference for rotten organic matter. Seasonal catches were also identified for all three visitors with maxima between October 1998 and April 1999. Such seasonal patterns might be related to either turbulence destabilizing the substratum during this period or life cycle patterns in the study area.


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