Repositorio
Institucional

Zuniga, Alfredo H.

Rau, Jaime R.

Fierro, Andres

Vergara, Pablo M.

Encina-Montoya, Francisco

Fuentes-Ramirez, Andres

Jaksic, Fabian M.

Fire Severity Causes Temporal Changes in Ground-Dwelling Arthropod Assemblages of Patagonian Araucaria-Nothofagus Forests

MDPI

FIRE-SWITZERLAND

en

Fire is one of the main drivers of anthropogenic disturbances in temperate forest ecosystems worldwide, with multiple effects spread across ecological networks. Nevertheless, the biodiversity effects of fire are poorly known for species-diverse groups such as arthropods. In this research, we used a burn gradient generated two and three years after a large fire event to assess how different levels of fire severity affect arthropod diversity in the forest with the main forest forming long-living tree species Araucaria araucana, in southern Chile. The species richness and abundance of arthropods among trophic guilds was estimated annually in four fire-severity levels. We found that arthropods responded differently to fire severity levels, depending on their trophic guilds and years after fire (two and three years after fire). During the second year after fire, zoophages, phytophages, and parasitoids were more diverse in areas with high fire severity within the second year after fire, as compared to those in areas with low severity or unburned stands. In the third year after fire, a change in this trend was observed, where the abundance of all groups dropped significantly, with positive changes in the diversity in zoophages, phytophages, polyphages and saprophages, which is more noticeable in sites with high severity. These results indicate that annual variation in environmental conditions triggers bottom-up cascading effects for arthropods. Forests stands severely impacted by fires support highly fluctuating and possibly unstable arthropod assemblages. Hence, restoration efforts should be focused on recovering microhabitat conditions in these stands to allow the persistence of arthropods.

artículo original

This research was partially funded by FONDECYT 11150487 and DIUFRO DI20-0066. A.F.R. thanks the support received from ANID BASAL FB210015 (CENAMAD), ANID SCIA-Anillo ACT210052 and Universidad de La Frontera DI22-1003. PMV tranks the support received from Proyecto DICYT, 092275WE_Ayudante.

Esta investigación fue financiada parcialmente por FONDECYT 11150487 y DIUFRO DI20-0066. A.F.R. agradece el apoyo recibido de ANID BASAL FB210015 (CENAMAD), ANID SCIA-Anillo ACT210052 y Universidad de La Frontera DI22-1003. PMV agradece el apoyo recibido por parte del Proyecto DICYT, 092275WE_Ayudante.

10.3390/fire5050168

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Araucaria araucana

disturbance

epigeic entomofauna

disturbances

National Reserve

trophic guild

SPECIES-DIVERSITY

ABUNDANCE

EXTRAPOLATION

RAREFACTION

ECOSYSTEMS

INSECTS

DISTURBANCE

WILDFIRES

RESPONSES

NORTHERN

Ecología

Silvicultura

Araucaria araucana

disturbio

entomofauna epigeica

disturbios

Reserva Nacional

gremio trófico

ESPECIES-DIVERSIDAD

ABUNDANCIA

EXTRAPOLACIÓN

RAREFACCIÓN

ECOSISTEMAS

INSECTOS

DISTURBANCIA

INCENDIOS FORESTALES

RESPUESTAS

NORTE

Fire Severity Causes Temporal Changes in Ground-Dwelling Arthropod Assemblages of Patagonian Araucaria-Nothofagus Forests

artículo original

version publicada

CC BY 4.0

CC BY 4.0

acceso abierto

acceso abierto

ANID-FONDECYT 11150487

UFRO DIUFRO DI20-0066

ANID-BASAL FB210015

ANID ACT210052

UFRO DI22-1003

ANID FONDECYT 11150487

ANID BASAL FB210015

WOS:000874349000001