Soil macrofauna.

2017 ◽  
pp. 82-93
Author(s):  
J. K. Whalen ◽  
L. Sampedro
Keyword(s):  
2013 ◽  
Vol 19 (4) ◽  
pp. 611-617
Author(s):  
Jiliang LIU ◽  
Jing CAO ◽  
Xiaoyang ZHANG ◽  
Shijie LI ◽  
Chunlin PAN

Pedobiologia ◽  
2021 ◽  
pp. 150770
Author(s):  
G.X. Rousseau ◽  
O. Deheuvels ◽  
D. Celentano ◽  
I.R. Arias ◽  
L.M. Hernández-García ◽  
...  

2009 ◽  
Vol 44 (8) ◽  
pp. 1011-1020 ◽  
Author(s):  
Robélio Leandro Marchão ◽  
Patrick Lavelle ◽  
Leonide Celini ◽  
Luiz Carlos Balbino ◽  
Lourival Vilela ◽  
...  

The objective of this work was to assess the effects of integrated crop-livestock systems, associated with two tillage and two fertilization regimes, on the abundance and diversity of the soil macrofauna. Four different management systems were studied: continuous pasture (mixed grass); continuous crop; two crop-livestock rotations (crop/pasture and pasture/crop); and native Cerrado as a control. Macrofauna was sampled using a modified Tropical Soil Biology and Fertility method, and all individuals were counted and identified at the morphospecies level for each plot. A total of 194 morphospecies were found, distributed among 30 groups, and the most representative in decreasing order of density were: Isoptera, Coleoptera larvae, Formicidae, Oligochaeta, Coleoptera adult, Diplopoda, Hemiptera, Diptera larvae, Arachnida, Chilopoda, Lepidoptera, Gasteropoda, Blattodea and Orthoptera. Soil management systems and tillage regimes affected the structure of soil macrofauna, and integrated crop-livestock systems, associated with no-tillage, especially with grass/legume species associations, had more favorable conditions for the development of "soil engineers" compared with continuous pasture or arable crops. Soil macrofauna density and diversity, assessed at morphospecies level, are effective data to measure the impact of land use in Cerrado soils.


2017 ◽  
Vol 47 (10) ◽  
Author(s):  
Djavan Pinheiro Santos ◽  
Thiago Rodrigo Schossler ◽  
Isis Lima dos Santos ◽  
Nathália Batista Melo ◽  
Glenio Guimarães Santos

ABSTRACT: The aim of this study was to characterize the soil macrofauna under different crop systems and compare them to the macrofauna under the native vegetation of a Cerrado/Caatinga ecotone in southwestern Piauí State, Brazil. The areas studied included areas under sweetsop cultivation (Annona squamosa L.), andropogon grass with three years of use, andropogon grass with six years of use, pivot-irrigated corn, Napier grass, and native vegetation. In each area, soil layers of 0-0.1, 0.1-0.2, and 0.2-0.3m, including the surface litter, were evaluated following the Tropical Soil Biology and Fertility Program (TSBF) recommendations. The soil macrofauna from the different land-use systems were identified to the family level, and the mean density of each taxon was calculated for each soil-management type and layer. The structure of the soil macrofauna was negatively altered under the different crops in comparison to the native Cerrado/Caatinga vegetation, with macrofaunal occurrence varying in the different soil layers. A correlation existed between the functional groups and the soil grain-size distribution and moisture. Napier grass cultivation favored greater soil macrofaunal abundance, with a predominance of families belonging to the orders Isoptera and Hymenoptera. Number of soil macrofaunal families under pivot-irrigated corn was more like the number observed with the native vegetation, and corn also had greater family diversity compared to the other crops studied. Therefore, pivot-irrigated corn can reduce the impact of anthropogenic land use on the diversity of soil macrofauna.


2009 ◽  
Vol 44 (8) ◽  
pp. 996-1001 ◽  
Author(s):  
Pedro Rodolfo Siqueira Vendrame ◽  
Robélio Leandro Marchão ◽  
Osmar Rodrigues Brito ◽  
Maria de Fátima Guimarães ◽  
Thierry Becquer

The objective of this work was to assess the relationship between macrofauna, mineralogy and exchangeable calcium and magnesium in Cerrado Oxisols under pasture. Twelve collection points were chosen in the Distrito Federal and in Formosa municipality, Goiás state, Brazil, representing four soil groups with varied levels of calcium + magnesium and kaolinite/(kaolinite + gibbsite) ratios. Soil macrofauna was collected in triplicate at each collection point, and identified at the level of taxonomic groups. Macrofauna density showed correlation with contents of kaolinite, gibbsite and exchangeable Ca + Mg in the soils. Mineralogy and exchangeable Ca + Mg had significant effects on taxonomic groups and relative density of soil macrofauna. The termites (Isoptera) were more abundant in soils with low exchangeable Ca + Mg; earthworms (Oligochaeta), in soils with high levels of kaolinite; and Hemiptera and Coleoptera larvae were more abundant in gibbsitic soils with higher contents of total carbon.


Soil Research ◽  
1993 ◽  
Vol 31 (1) ◽  
pp. 83 ◽  
Author(s):  
LAL Debruyn

In Durokoppin reserve and surrounding farmland, part of the central wheatbelt region, pitfall trapping and mapping of soil macrofauna activity were used to define the extent of soil macrofauna activity in these two environments. This type of study is a necessary precursor to determining the significance of certain invertebrate activity in soil modification in these habitats. The relative merits of the two techniques in determining the extent of soil macrofauna activity is assessed. The soil macrofauna groups identified by mapping and pitfall trapping as making a substantial contribution (in terms of relative abundance and activity) in all habitats were, in descending order, ants, spiders and scorpions (wandoo woodland only). In general there was good agreement between the two techniques in identifying the major species and trends in species composition between habitats, but mapping failed to identify the rare or cryptic species. Mapping more accurately identified the resident species in each habitat compared with pitfall trapping. Pitfall trapping data indicated that foraging activity of most soil macrofauna was depressed over winter, except for beetles, and was higher in the spring and summer sampling periods. However, mapping revealed a more constant level of soil macrofauna activity, especially for ant nests. It is argued that the two approaches complement one another and that each has value in interpreting the effects of soil macrofauna activity on soil properties in further studies. The discussion is based on the results of a study carried out in the Kellerberrin area of Western Australia.


2019 ◽  
Vol 17 (3) ◽  
pp. 105
Author(s):  
Leónides Castellanos González ◽  
Ana Francisca González Pedraza ◽  
Alfonso Eugenio Capacho Mogollón

El proyecto Plantar (Desarrollo estratégico agroecológico con uso de TIC para el fortalecimiento de cultivos promisorios en el Departamento de Norte de Santander) se desarrolló desde en enero de 2018 y a junio de 2019 en los municipios Arboledas, Convención, La Playa, La Esperanza, Ocaña y Mutiscua.  El objetivo del trabajo fue evaluar la Influencia de 18 sistemas agroforestales del Proyecto Plantar sobre la macrofauna del suelo después de implementados los mismos en los seis municipios. Se compararon las variables de biodiversidad de la macrofauna en dos muestreos (abundancia, Índice de riqueza específica, índice de diversidad de especies de Margalef, índice de equidad de abundancia de Shannon-Wiener e índice de dominancia de Simpson), uno antes de sembrar los cultivos y otro al año de establecidos.  Se realizaron análisis descriptivos de las variables estudiadas para las variables de modelos agroecológico. El establecimiento de los cultivos en los sistemas agroforestales tuvo impactos negativos y positivos sobre la macrofauna del suelo, al parecer debido a la heterogeneidad de la cobertura vegetal y del uso de suelo de las parcelas que aportaron los agricultores al proyecto. Al analizar la abundancia de la macrofauna se verifica que esta disminuye en todos los municipios, sin embargo, un análisis más detenido de otras variables como la riqueza y diversidad de especies, la equidad y la dominancia dentro de los modelos y grupos biológicos aportan resultados más favorables que cuando se analiza solamente de la abundancia. Palabras clave: Biodiversidad, abundancia, equidad, dominancia, modelos agroecológicos. 


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