Data/hora: 01/06/2024 13:45:11

Biblioteca(s): 	Embrapa Florestas.	
Data corrente: 	25/09/2008	
Data da última atualização: 	25/09/2008	
Autoria: 	MENDES, S.; SERRANO, A.; DIAS, S.; SOUSA, J. P.	
Título: 	Towards a biodiversity monitoring program for Portuguese forests: making the use of soil macrofauna operational tool.	
Ano de publicação: 	2008	
Fonte/Imprenta: 	In: INTERNATIONAL COLLOQUIUM ON SOIL ZOOLOGY, 15; INTERNATIONAL COLLOQUIUM ON APTERYGOTA, 12., 2008, Curitiba. Biodiversity, conservation and sustainabele management of soil animal: abstracts. Colombo: Embrapa Florestas. Editors: George Gardner Brown; Klaus Dieter Sautter; Renato Marques; Amarildo Pasini. 1 CD-ROM.	
Idioma: 	Inglês	
Conteúdo: 	Forest biodiversity is influenced by many kinds of drivers. Identifying, monitoring and evaluating
the effect of these drivers are, therefore, priorities for forest-agricultural policies. Most existing
monitoring programs are based on plant diversity and structural parameters; including other
indicators, like soil invertebrates, in these monitoring schemes has been widely advised, namely
in the implementation of the European Forests Monitoring Programme. In order to make
operational the use of epigeal soil macrofauna in a monitoring programme of forest biodiversity,
namely to assess the feasibility of using surrogate groups and surrogate taxonomic levels as
indicators (thus providing new tools to monitor and assess belowground biodiversity in
Portuguese forested areas), a set of 16 areas was defined considering the dominant tree species
in Portuguese forests: Pinus Pinaster, Pinus Pinea, Quercus ilex, Quercus robur, Quercus suber,
Quercus pyrenaica, Castanea sativa and Eucalyptus globulus. Sampling took place during Spring
2007 using pitfall traps (15 per area) and macrofauna collected was identified to family/order
and species level (when that was not possible, morphospecies was used).
A total of 11551 individuals belonging to 517 species/morphospecies were caught in traps.
Species richness varied among areas, reflecting differences due to the main tree species but
also to geographical location, management practices or interactions of some of these drivers.
Quercus ilex areas presented the highest species richness, opposite to Eucalyptus globulus
areas, where this value was the lowest. Considering main macrofauna groups found on samples,
this pattern is also observed (except for Carabid beetles), especially on areas with higher species
richness. The abundance of invertebrates, on the other hand, appears to be determined by the
richness in vascular plants and understory vegetation coverage on sampled areas; the same
parameters seem to determine the abundance of most macrofauna groups (with the exception
of Coleoptera and Carabids).
A set of key indicator groups and surrogate taxonomic levels was obtained as indicators for
biodiversity. Positive and significant correlations were found between total species richness
and the species richness of Formicidae, Coleoptera and Araneae. The use of GLM techniques
revealed that Araneae and Coleoptera?s species richness can act as surrogates for total species
richness. Furthermore, these analyses showed that total invertebrate family richness can be
used for predicting total invertebrate species richness, thus acting as a useful surrogate for this
parameter. Some other correlations showing that a higher taxonomical level can be used as
surrogate of species richness were found for Spiders and Beetles, where GLM determined that
species richness can be estimated when using fauna data identified at family/order level. All
these models, in spite of all their limitations, point to the fact that surrogates can be used in
Portuguese forested areas at different levels to determine the total richness of soil macrofauna
or the richness of some dominant groups in it. The results obtained can also be used for
establishing a range of baseline values of soil macrofauna richness for Portuguese forested
areas, the first step towards the implementation of a monitoring program using these organisms.	
Categoria do assunto: 	--	
Registro original: 	Embrapa Florestas (CNPF)	
Exemplares: 	CNPF - (43719-1) - UPE - PL - -- - CD0305 -  -  - DIS