Tillage system does not affect soil macrofauna in southeastern Buenos Aires province, Argentina

Manetti, Pablo Luis; López, A.; Clemente, Natalia Liliana; Faberi, A. J.

doi:10.5424/sjar/2010082-1189

Cited by 24 publications

(25 citation statements)

References 31 publications

(25 reference statements)

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“…These numbers are comparable to what Dezi et al (2013) found in agricultural soils in India (16.000 ind.m 2 ) and are higher than found by Chan andHeenan (1995) (2000 ind.m 2 ) in arable lands in Australia. Further studies included data on enchytraeid abundance determined by handsorting of soil monoliths in Brazil, such as Brown et al (2001) Manetti et al (2010), appr. 750 ind.m 2 in no-tillage cropping system.…”

Section: Abundance Of Enchytraeids In (Sub)tropical Soilsmentioning

confidence: 99%

“…However, studies on their ecology using standardized methods and thus, globally comparable results, are restricted to a couple of publications (Römbke and Meller, 1999;Römbke et al, 2007) which used the cold wet extraction. In South America, there are a few other reports on abundance of enchytraeids, which numbers were determined by handsorting, but taxonomic groups were not assessed (Sturm, 1978;Vaçulik et al, 2004;López et al, 2005;Aquino et al, 2008;Manetti et al, 2010).…”

Section: Introductionmentioning

confidence: 99%

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Enchytraeid abundance in Araucaria Mixed Forest determined by cold and hot wet extraction

et al. 2015

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Enchytraeids are small oligochaetes found worldwide in soils with sufficient moisture and organic matter, but scarcely studied in the Southern hemisphere. This is the third study on enchytraeid abundance in Brazil using wet extraction and the first carried out in Araucaria Mixed Forest (subtropical region). The sampling and extraction were based on the standard method ISO 23611-3/2007 using an adapted split soil corer and wet extraction with and without heat to assess the abundance of enchytraeids in a forest fragment at Embrapa Forestry in Colombo, Paraná State. The samplings were performed in 3 occasions between September 2011 and April 2012. The average numbers estimated by each method varied from appr. 2.000-12.000 (cold) and 5.000-12.000 ind./ m 2 (hot), respectively, with a maximum of 44.000 ind./ m 2 in one of the samples, the highest value reported so far in Brazil. The hot extraction was more advantageous, given the speed and preservation of the specimens in vivo, allowing taxonomic identification. Advantages and disadvantages of wet extractions compared to handsorting and formol methods are also discussed. Guaranidrilus, Hemienchytraeus, Enchytraeus, Fridericia and Achaeta were the genera identified in the samples.Keywords: Enchytraeidae, Oligochaeta, extraction methods, Araucaria, subtropical. Abundância de enquitreídeos na Floresta Ombrófila Mista determinada por extração úmida quente e fria ResumoOs enquitreídeos são pequenos oligoquetas encontrados no mundo todo em solos com suficiente umidade e matéria orgânica, porém muito pouco estudados no hemisfério Sul. Este é o terceiro estudo sobre a abundância de enquitreídeos no Brasil utilizando o método de extração úmida e o primeiro realizado em Floresta Ombrófila Mista (região subtropical).A amostragem e extração foram baseadas no método padrão ISO 23611-3/2007, utilizando-se um trado desmontável adaptado e extração úmida com e sem aquecimento para acessar a abundância de enquitreídeo em um fragmento de floresta na Embrapa Florestas em Colombo, Paraná. As amostragens foram realizadas em três ocasiões entre setembro, 2011 e abril 2012. Os números médios estimados através de cada método variaram de 2.000-12.000 (frio) e 5.000-12.000 ind./ m 2 (quente), respectivamente, e o máximo de 44.000 ind./ m 2 em uma das amostras, o mais alto já relatado no Brasil. A extração quente foi a mais vantajosa, considerando a rapidez e preservação dos exemplares in vivo. As vantagens e desvantagens das extrações úmidas comparadas aos métodos de triagem manual e extração com formol foram discutidas. Os gêneros Guaranidrilus, Hemienchytraeus, Enchytraeus, Fridericia e Achaeta foram identificados nas amostras.Palaras-chave: Enchytraeidae, Oligochaeta, métodos de extração, Araucária, subtropical.

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Section: Abundance Of Enchytraeids In (Sub)tropical Soilsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Enchytraeid abundance in Araucaria Mixed Forest determined by cold and hot wet extraction

et al. 2015

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“…The present study is a continuation of research (Manetti et al, 2010) conducted to evaluate the influence of CT and NT on soil fauna in two traditional crops, wheat and maize, in Balcarce, Buenos Aires, Argentina. The climate in this area is mesothermal, humid to subhumid (according to the Thornthwaite classification) or temperate humid without a dry season (according to the Köppen classification).…”

Section: Methodsmentioning

confidence: 99%

“…Samples were taken in the same agricultural fields under production used by Manetti et al (2010). These fields were located within 30 km of the Balcarce Agricultural Experimental Station of the National Institute of Agricultural Technology (37°45′45″ S, 58°18′3″ W).…”

Section: Methodsmentioning

confidence: 99%

Macrofauna Activity Density in Contrasting Tillage Systems in Buenos Aires Province, Argentina

et al. 2013

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In Argentina, two tillage systems are used, conventional tillage (CT) and no-till (NT). The aim was to determine the grounddwelling macrofauna taxa and compare the impacts of both NT and CT on their activity density. Samples were taken within wheat (Triticum aestivum L.) (August-December) and maize (Zea mays L.) (November-April) crop fields under CT and NT during three cropping seasons (Cycles 1, 2, and 3). Ten pitfall traps 10 m apart were placed in each field. Traps were collected every 15 d throughout the crop cycles to determine activity density (individuals plot -1 ) of soil macrofauna. Invertebrates were counted and identified to the class level; Insecta were further identified to order, family, or species levels. Higher mean total macrofauna activity density was found under NT than CT for Cycle 1 in wheat and Cycles 1 and 3 in maize. Arachnida activity density was higher under NT than CT in only a few crop cycles. Carabidae showed no preference for any tillage system. Orthoptera showed more activity density under NT than CT. The activity density of the Lepidoptera and Hymenoptera specimens were higher under CT than NT in some wheat and maize seasons. Diplopoda and Crustacea had higher activity density under NT than CT. In conclusion, the total activity density was consistently greater under NT, but there were differences within taxonomic groups.

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“…10 ). Manetti et al ( 2010 ) in Argentina also found that tillage had little effect on soil macrofauma and attributed this to the fact that tillage had little effect Note that the impact of no-till on earthworm density and microbial biomass depends on the use of organic amendment. Moreover, microbial activity is particularly affected by the application of herbicides (Adapted from Mijangos et al 2006 ) on the soil content in organic matter.…”

Section: Tillagementioning

confidence: 99%

Cropping Systems to Improve Soil Biodiversity and Ecosystem Services: The Outlook and Lines of Research

Clermont-Dauphin

Blanchart

Loranger-Merciris

et al. 2014

Sustainable Agriculture Reviews

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The intensive farming practices that have been developed over the past 60 years are based mainly on the use of chemical inputs such as fertilisers and pesticides, mechanical tillage and monoculture. The limitations of these methods are now clear: long-term degradation of soil fertility, impacts on the environment and human health, high consumption of fossil fuels, low efficiency of inputs and threats to food security in a context of climate change. Would farming practices that rely on the activation of ecological processes be an alternative to achieve a balance between high productivity and environmental preservation? While many studies suggest a positive relationship between soil biodiversity and ecosystem services, there is considerable debate on the form such agricultural systems should take. This study reviewed the state of current knowledge and identified aspects requiring further research to achieve the aim of sustainable intensification of agriculture. The following major points emerged: 1) Most studies focused on the evaluation of individual practices. However, changes in farmers’ cropping practices to take advantage of soil biodiversity services would need to manage not only the interactions between various practices but also the trade-off between the technical and socio economic constraints of cropping systems. Advances in agricultural system design approaches may help to ensure appropriate trade-offs. 2) More attention should be given to drawing on knowledge from different sources: laboratory studies focusing on the ecological functions of soil biodiversity, experimental surveys on farmers’ fields to rank the farming practices and processes to be included in site-specific models, and on- station experiments to test hypotheses and acquire additional reference material. 3) Whereas advances in technical and scientific knowledge provide an increasing number of relevant indicators for characterizing biodiversity and ecological functions, studies are rarely targeted at the development of indicators that are accessible to farmers or their technical advisors. The lack of indicators accessible to grassroots players for evaluating the impacts of their decisions on soil biodiversity remains a serious obstacle to the development of innovative agro-ecological systems

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Tillage system does not affect soil macrofauna in southeastern Buenos Aires province, Argentina

Cited by 24 publications

References 31 publications

Enchytraeid abundance in Araucaria Mixed Forest determined by cold and hot wet extraction

Enchytraeid abundance in Araucaria Mixed Forest determined by cold and hot wet extraction

Macrofauna Activity Density in Contrasting Tillage Systems in Buenos Aires Province, Argentina

Cropping Systems to Improve Soil Biodiversity and Ecosystem Services: The Outlook and Lines of Research

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