<i>EVALUATION OF REGENERATION PROCESS AND STATUS OF PINE FORESTS FROM SIERRA ESPUÑA (MURCIA) BY ANALYSIS OF MEAN INDIVIDUAL BIOMASS IN GROUNDBEETLES</i>

Authors

  • José Serrano
  • Diego Gallego
Keywords: Carabidae, bioindicators, pine forests, Sierra Espuña, Murcia, Spain, mean individual biomass

Abstract

We have determined the Mean Individual Biomass (MIB) of the ground beetle fauna of Sierra Espuña (Murcia, Spain) to assess the status and regeneration capacity of pine forests. Pitfall traps used during autumn 2002 and spring 2003. The relationship between biomass and environmental parameters of the three most abundant species was studied using a Generalized Additive Model (GAM) linked to a Geographic Information System (GIS). En each site we calculated the MIB either by weighing directly the beetles, and indirectly after applying a formula related to beetle length. Likewise, we have weighed the biomass of non-carabid insects and spiders. Data on the three most abundant carabids indicate that there is an optimum around 1,000 m. Site altitude is the parameter that best explains abundance data. Values of MIB are similar or higher than those reported in old pine forests of Poland (300 mg or more in each site). This means that the status and regeneration capacity of pine forests of Sierra Espuña are probably good, and that their potential to resist pest outbreaks is high. Few carabid beetles were collected in pine forests under 800 m. At these altitudes an indirect analysis based on the biomass of the other epigaeic arthropods was not likewise possible as both measures were not significantly related. To corroborate these preliminary conclusions it is necessary to keep on sampling these pine forest through at least 5-10 years.

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Author Biographies

José Serrano

Universidad de Murcia

Diego Gallego

Universidad de Murcia
How to Cite
Serrano, J., & Gallego, D. (2004). <i>EVALUATION OF REGENERATION PROCESS AND STATUS OF PINE FORESTS FROM SIERRA ESPUÑA (MURCIA) BY ANALYSIS OF MEAN INDIVIDUAL BIOMASS IN GROUNDBEETLES</i>. Anales de Biología, (26), 175–178. Retrieved from https://revistas.um.es/analesbio/article/view/30681
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