Impact of non-indigenous planktonic copepod species on the estuaries of the Basque coast

• Autores: Ziortza Barroeta Legarreta
• Directores de la Tesis: Fernando Villate Guinea (dir. tes.), Ibón Uriarte Capetillo (dir. tes.)
• Lectura: En la Universidad del País Vasco - Euskal Herriko Unibertsitatea ( España ) en 2021
• Idioma: inglés
• Títulos paralelos:
  • Bertakoak ez diren kopepodo espezie planktonikoen eragina Euskal Herriko estuarioetan
• Tribunal Calificador de la Tesis: María Luz Fernández de Puelles Martínez (presid.), Arantza Iriarte Gabikagogeaskoa (secret.), Marco Uttieri (voc.)
• Programa de doctorado: Programa de Doctorado en Medio Ambiente y Recursos Marinos por la Universidad del País Vasco/Euskal Herriko Unibertsitatea
• Materias:
  • Ciencias de la vida
    • Biología animal (zoología)
      • Ecología animal
  • Ciencias de la tierra y del espacio
    • Oceanografía
      • Oceanografía biológica
    • Ciencias del suelo
• Enlaces
  • Tesis en acceso abierto en: ADDI
• Resumen

  • Since 1998, monitoring program on the environmental variables and zooplankton community are carrying out in the estuaries of Bilbao and Urdaibai (Bay of Biscay). In the year 2001 two non-indigenous copepod species (NIS), Acartia tonsa and Oithona davisae, were found in the inner estuary of Bilbao (Bay of Biscay), becoming immediately the dominant copepod species of the zooplankton community. Similarly, in the year 2003 these species occurred in the estuary of Urdaibai (near estuary of Bilbao), A. tonsa becoming very abundant in summer at the inner part of the estuary, but O. davisae occurring sporadically and in very few abundances. Later, in the year 2010 another NIS, Pseudodiaptomus marinus, occurred also in the estuary of Bilbao, together with other expanding copepod species (OES), Calanipeda aquaedulcis and Acartia bifilosa. The impact of this colonizer species has been little studied. Therefore, the aim of this thesis is to analyse the colonization process by NIS and OES of planktonic copepods, and the impact of such colonising species on native zooplankton communities, in estuaries of the Basque coast in relation to the natural and anthropogenic differences between estuaries, in order to assess the invasive character of the studied colonizing copepods and the sensitivity of the studied estuaries to biological invasions. // Since 1998, monitoring program on the environmental variables and zooplankton community are carrying out in the estuaries of Bilbao and Urdaibai (Bay of Biscay). In the year 2001 two non-indigenous copepod species (NIS), Acartia tonsa and Oithona davisae, were found in the inner estuary of Bilbao (Bay of Biscay), becoming immediately the dominant copepod species of the zooplankton community. Similarly, in the year 2003 these species occurred in the estuary of Urdaibai (near estuary of Bilbao), A. tonsa becoming very abundant in summer at the inner part of the estuary, but O. davisae occurring sporadically and in very few abundances. Later, in the year 2010 another NIS, Pseudodiaptomus marinus, occurred also in the estuary of Bilbao, together with other expanding copepod species (OES), Calanipeda aquaedulcis and Acartia bifilosa. The impact of this colonizer species has been little studied. Therefore, the aim of this thesis is to analyse the colonization process by NIS and OES of planktonic copepods, and the impact of such colonising species on native zooplankton communities, in estuaries of the Basque coast in relation to the natural and anthropogenic differences between estuaries, in order to assess the invasive character of the studied colonizing copepods and the sensitivity of the studied estuaries to biological invasions.