Structure and dynamics of a benthic trophic web in a Mediterranean seasonal stream

  • Patrizia Elena Vannucchi Università di Perugia, Italy.
  • Manuel Jesús López-Rodríguez | manujlr@ugr.es Universidad de Granada, Spain.
  • José Manuel Tierno de Figueroa Universidad de Granada, Spain.
  • Elda Gaino Università di Perugia, Italy.

Abstract

In this work we present the results of a study conducted on the benthic macroinvertebrate community of a Southern Spain seasonal stream over a year. We constructed the food web focusing on the benthic fauna and we studied the ecology and dynamics of the community in terms of trophic resources. The benthic trophic web was composed by 35 families; these were not all present at the same time, but were incorporating and disappearing throughout the study period. Connectance between trophospecies varied from 0.24 to 0.59. The functional feeding group (FFG) composition of the community turned out to be fairly constant with time with a predominance of scrapers and collector-gatherers. Furthermore, data obtained from the Bray-Curtis measure and the niche overlap study, evidence the stability of the stream from a trophic point of view. Rather widespread is omnivory that plays an important role in the survival of some families. We compared the results of the trophic web study with those of other temporary streams of the same region of Southern Spain.

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Author Biographies

Patrizia Elena Vannucchi, Università di Perugia

Dipartimento di Biologia Cellulare e Ambientale

Ph.D. Student

Manuel Jesús López-Rodríguez, Universidad de Granada

Departamento de Ecología

Assistant Professor

José Manuel Tierno de Figueroa, Universidad de Granada

Departamento de Zoología

Associate Professor

Elda Gaino, Università di Perugia

Dipartimento di Biologia Cellulare e Ambientale

Professor

Published
2013-10-31
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Section
Original Articles
Keywords:
benthic macroinvertebrates, functional feeding groups, trophic web, temporary water, Southern Spain.
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How to Cite
1.
Vannucchi PE, López-Rodríguez MJ, Tierno de Figueroa JM, Gaino E. Structure and dynamics of a benthic trophic web in a Mediterranean seasonal stream. J Limnol [Internet]. 2013Oct.31 [cited 2021May7];72(3):e51. Available from: https://jlimnol.it/index.php/jlimnol/article/view/jlimnol.2013.e51