Relationships between arthropod abundance and Blue Tit Parus caeruleus density in dehesas during the pre-breeding period

Full article

Published:

Volume 40(1), June 1993. Pages 33-38.

Language:

Spanish

Original title:

Relaciones entre la abundancia de artrópodos y la densidad del Herrerillo Común Parus caeruleus en dehesas durante el periodo prerreproductor

Keywords:

arthropod abundance, dehesas, density, Parus caeruleus, pre-breeding period.

Abstract:

We analyze the relationship between Blue Tit Parus caeruleus density in Holm oak Quercus ilex dehesas, and the abundance of arthropods in the oak canopies, its main food source, during the pre-breeding period of 1992 (April). We found that bird density and arthropod abundance in eight study plots were not correlated. Arthropod abundance was much greater than estimated bird requirements, a fact that could explain the lack of relationship found between bird and food abundances.