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Resilience of a zooplankton community subjected to marine intrusion in a tropical coastal lagoon

Kozlowsky-Suzuki, Betina LU and Bozelli, R L (2004) In Hydrobiologia 522(1-3). p.165-177
Abstract
One of the main disturbances on Imboassica Lagoon is the occasional artificial opening of its sand bar. Following two such events, two environmental gradients were observed. One was directly related to entry of marine water ( salinity gradient); and the other to a decrease in dilution of the nutrient load, because of water level reduction ( trophic status gradient). Two stations were sampled. At Station 1, located near the sand bar, salinity increase caused a decrease in the total zooplankton density and a shift in community composition due to a loss of relatively small individuals (i.e. rotifers) and the subsequent entrance of larger ones (i.e. copepods). High diversity was related to salinity increases. At Station 2, located near the... (More)
One of the main disturbances on Imboassica Lagoon is the occasional artificial opening of its sand bar. Following two such events, two environmental gradients were observed. One was directly related to entry of marine water ( salinity gradient); and the other to a decrease in dilution of the nutrient load, because of water level reduction ( trophic status gradient). Two stations were sampled. At Station 1, located near the sand bar, salinity increase caused a decrease in the total zooplankton density and a shift in community composition due to a loss of relatively small individuals (i.e. rotifers) and the subsequent entrance of larger ones (i.e. copepods). High diversity was related to salinity increases. At Station 2, located near the mouth of a sewage canal, the total zooplankton abundance and dominance were related to the salinity increase, while the highest richness and the lowest dominance were obtained at a high trophic state. The zooplankton community showed high persistence and resilience, which together with other ecological features in the system, returned to the pre-disturbance state 2 months after the sand bar was closed. Canonical correspondence analysis was a useful tool to assess system resilience. (Less)
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author
organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
persistence, sand bar opening, zooplankton, tropical coastal lagoon, resilience
in
Hydrobiologia
volume
522
issue
1-3
pages
165 - 177
publisher
Springer
external identifiers
  • wos:000221806500007
  • scopus:4043073668
ISSN
0018-8158
DOI
10.1023/B:HYDR.0000029970.81767.e5
language
English
LU publication?
yes
id
3bce8d0d-3acd-4a85-af8c-8ad5f03fe87e (old id 276248)
date added to LUP
2007-10-23 19:26:57
date last changed
2017-08-20 03:45:37
@article{3bce8d0d-3acd-4a85-af8c-8ad5f03fe87e,
  abstract     = {One of the main disturbances on Imboassica Lagoon is the occasional artificial opening of its sand bar. Following two such events, two environmental gradients were observed. One was directly related to entry of marine water ( salinity gradient); and the other to a decrease in dilution of the nutrient load, because of water level reduction ( trophic status gradient). Two stations were sampled. At Station 1, located near the sand bar, salinity increase caused a decrease in the total zooplankton density and a shift in community composition due to a loss of relatively small individuals (i.e. rotifers) and the subsequent entrance of larger ones (i.e. copepods). High diversity was related to salinity increases. At Station 2, located near the mouth of a sewage canal, the total zooplankton abundance and dominance were related to the salinity increase, while the highest richness and the lowest dominance were obtained at a high trophic state. The zooplankton community showed high persistence and resilience, which together with other ecological features in the system, returned to the pre-disturbance state 2 months after the sand bar was closed. Canonical correspondence analysis was a useful tool to assess system resilience.},
  author       = {Kozlowsky-Suzuki, Betina and Bozelli, R L},
  issn         = {0018-8158},
  keyword      = {persistence,sand bar opening,zooplankton,tropical coastal lagoon,resilience},
  language     = {eng},
  number       = {1-3},
  pages        = {165--177},
  publisher    = {Springer},
  series       = {Hydrobiologia},
  title        = {Resilience of a zooplankton community subjected to marine intrusion in a tropical coastal lagoon},
  url          = {http://dx.doi.org/10.1023/B:HYDR.0000029970.81767.e5},
  volume       = {522},
  year         = {2004},
}