Inter- and intra-annual variations of macroinvertebrate assemblages are related to the hydroperiod in Mediterranean temporary ponds |
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Authors: | Margarita Florencio Laura Serrano Carola Gómez-Rodríguez Andrés Millán Carmen Díaz-Paniagua |
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Institution: | 1.Do?ana Biological Station-CSIC,Seville,Spain;2.Department of Plant Biology and Ecology,University of Seville,Seville,Spain;3.Department of Ecology and Hydrology,University of Murcia,Murcia,Spain |
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Abstract: | Macroinvertebrate assemblages of 22 temporary ponds with different hydroperiod were sampled monthly during a dry year (2005–2006)
and a wet year (2006–2007). Coleopteran and Heteropteran adults were most abundant at the end of the hydroperiod, while Coleopteran
larvae, mainly Dytiscidae, were mostly recorded in spring. Macroinvertebrate assemblages differed between study years. The
shorter hydroperiod of ponds in the dry year constrained the length of the aquatic period for macroinvertebrates, and three
distinct wet phases of community composition could be distinguished: filling phase, aquatic phase and drying phase. In the
wet year, with a longer pond hydroperiod, five phases could be identified, with the aquatic phase differentiated into winter,
early spring and late spring phases. Dispersers such as Anisops sardeus, Berosus guttalis or Anacaena lutescens were typical during the filling phase and Corixa affinis or Enochrus fuscipennis during the drying phase. The ponds with intermediate hydroperiod showed a similar composition (mainly dispersers) at the
beginning and end of their wet period; this is not being seen in early drying or long hydroperiod ponds. A general pattern
was detected, with similar variation between both years, which may be associated with the life histories of the macroinvertebrate
taxa recorded.
Guest editors: B. Oertli, R. Cereghino, A. Hull & R. Miracle
Pond Conservation: From Science to Practice. 3rd Conference of the European Pond Conservation Network, Valencia, Spain, 14–16
May 2008 |
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Keywords: | Aquatic macroinvertebrates Temporal variation Wet phases Hydroperiod Community composition Life cycle |
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