Data/hora: 07/06/2024 08:19:23

Biblioteca(s): | Embrapa Florestas.
Data corrente: | 25/09/2008
Data da última atualização: | 25/09/2008
Autoria: | HUERTA, E.; KAMPICHLER, C.; OCHOA-GAONA, S.; JONG, B. de; GEISSEN, V.; HERNÁNDEZ-DAUMÁS, S.
Título: | Ecological index for soil quality based in soil macrofauna.
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:

The ?ecological engineers? or ecosystem engineers (sensu Jones et al. 1994) are those
organisms that produce physical structures through which they can modify the availability or
accessibility of a resource for other organisms. Earthworms as ecosystem engineers play an
important role in organic matter decomposition dynamics and influence the supply of nutrients in
several ways. Their presence can be used as a soil quality indicator. In south-eastern Mexico,
the large-scale conversion of native vegetation into agroecosystems commenced in the middle
of the 20th century and is a still going on. Thus, it is important to establish efficient communication
between agriculturists and researchers in order to find strategies for maintaining soil fertility
and/or to promote soil conservation. The objective of this study was to construct a simple model
which could help agriculturists in determining the ecological quality of their soils by the presence/
absence of soil macrofauna, the structure of their community and their biomass. Data of each
variable were grouped in 3, 4 or 5 categories and were normalized between 0 and 1. For the
analysis we used rules and fuzzy logic (Figure 1).
We sampled 8 sites in Balancan and Tenosique municipalities in the state of Tabasco where the
index showed that diverse agro forestry cultures had the highest soil quality. We hope this helps
to enhance tree plantations in agroecosystems in order to promote soil fertility.

Categoria do assunto: | --
Registro original: | Embrapa Florestas (CNPF)
Exemplares: | CNPF - (43716-1) - UPE - PL - -- - CD0305 -  -  - DIS