Soil Arthropods (Coleoptera, Isopoda) in Organic and Conventional Agroecosystems

Hadjicharalampous, E; Kalburtji, Kiriaki L.; Mamolos, Andreas P.

doi:10.1007/s00267-001-0056-5

Cited by 32 publications

(21 citation statements)

References 17 publications

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“…Un caso similar ocurre con los Isópodos (Zerbino et al, 2008;Cabrera et al, 2011) característicos de los agroecosistemas donde existe un alto aporte de biomasa que favorece el mantenimiento de humedad (Hadjicharalampous et al, 2002), condición propicia para su desarrollo.…”

Section: Cpunclassified

Macrofauna edáfica asociada a sistemas agroforestales en la Amazonia Colombiana

2015

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ResumenLa densidad, riqueza y diversidad de la macrofauna edáfica son afectadas, entre otros factores, por la configuración de los agroecosistemas y la estacionalidad de la precipitación. Con el fin de evaluar estos efectos en mayo y noviembre de 2011, correspondientes a épocas de máxima y mínima precipitación, respectivamente, se realizaron estudios sobre la composición de la macrofauna edáfica asociada con los arreglos agroforestales ubicados en el Centro de Investigaciones Macagual Cesar Augusto Estrada González, Amazonia, Caquetá, Colombia. El experimento se dispuso en un diseño completo al azar bifactorial con cuatro tratamientos (arreglos agroforestales: AB = abarco -Cariniana pyriformis Miers; CH = caucho Hevea brasiliensis (Willd. ex A. Juss.) Müll. Arg. ; CP = caucho-parica Schizolobium amazonicum Huber; UV = uvito Genipa Americana L.) y dos épocas (máxima y míni-ma precipitación), y cuatro repeticiones en parcelas divididas. Para explorar las relaciones entre los órdenes de macrofauna, se realizó un análisis de componentes principales y se evalúo el efecto de los arreglos agroforestales con una prueba de Monte Carlo. Los resultados mostraron que la densidad de la macrofauna fue mayor en el periodo de máxima precipitación (1129 individuos) en comparación con el de mínima (598 individuos). Los arreglos agroforestales influyen sobre la presencia o ausencia de algunos grupos taxonómicos (P < 0.05) como Homoptera (Insecta) y Raphidioptera (Insecta); además los UV y AB pueden favorecer a la macrofauna del estrés por sequía.Palabras claves: Edafofauna, fauna del suelo, arreglo agroforestal, época, densidad, riqueza, diversidad, Amazonía. AbstractThe density, richness and diversity of soil macrofauna are influenced by diverse factors such as the configuration of agroecosystems, seasonality, among others. In order to assess this influence, sampling was conducted in May and November 2011, corresponding to the periods of maximum and minimum rainfall respectively on the composition of soil macrofauna associated with agroforestal arragements located in the Research Centre Macagual Cesar Augusto Estrada González property of the University of Amazonia, Colombia. The experiment was conducted under a complete randomized bifactorial design with 4 treatments (agroforestry system) and 2 periods (maximum and minimum precipitation), with 4 replicates in split plots. Principal component analysis was performed to explore the relationships between the orders and the effect of the agroforestal arrangements, which was tested with a test of Monte Carlo. The results showed that the density of the macrofauna was higher in the period of maximum pluvial precipitation compared to the minimum (1129 vs 598 subjects, respectively). The agroforestal arrangements influences the presence or absence of some taxonomic groups of soil macrofauna (P<0.05) as Homoptera and Raphidioptera, besides than UV and AB can favor the macrofauna of the stress due to the drought.

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Macrofauna edáfica asociada a sistemas agroforestales en la Amazonia Colombiana

2015

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“…In Greece there are a few studies concerning various aspects of biodiversity in conventional and organic farming systems [48][49][50][51][52] . However, there is a lack of comparative studies on biodiversity between conventional and certified organic olive groves in Greece [53][54][55][56] .…”

Section: Introductionmentioning

confidence: 99%

Comparing conventional and organic olive groves in central Greece: plant and bird diversity and abundance

Solomou

Sfougaris

2011

Renew. Agric. Food Syst.

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The present study was conducted in Magnesia Prefecture, central Greece, during the period May-June 2007. It aimed at the comparison between conventional and certified organic olive groves with regard to olive and olive oil production, diversity of plants (herbaceous and woody) and diversity and abundance of avifauna. Correlations between variables within herbaceous plants (linear regression) and woody plants (Principal Component Analysis), and the role of integration time of olive groves to the organic system were investigated. Also, finding easily measurable parameters indicating high bird diversity levels within organic and conventional management systems was a main target of the study. According to our findings, neither edible olive yield nor olive oil yield showed significant differences between conventional and certified organic olive groves. There is an increasing trend for alpha and beta diversity of herbaceous plant species, woody plant beta diversity, density and cover of woody plants, and density of breeding birds in certified organic olive groves (10 years) in comparison with conventional ones. The effect of time since the adoption of organic procedures is very important and produces benefits for the biodiversity. In the total olive groves 15 insectivorous, six granivorous and three insectivorous/ granivorous birds species were recorded. Nine bird species distinguished by Ward's hierarchical clustering were identified as typical (indicator value, IndVal > 50%) of specific farming systems. Among them, the Eurasian jay, associated with the 10-year certified organic olive groves, and the common cuckoo, Orphean warbler and Red-backed shrike, associated with the 6-year certified organic olive groves, should be regarded as characteristic species (IndVal > 70%). Conclusively, organic farming favors some aspects of diversity of herbaceous and woody plants of olive grove ecosystems. On the contrary, similar effects on breeding bird diversity and density were not clearly recorded. However, breeding bird density proved a good indicator of their richness.

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“…Agri‐environmental indicators are one of the tools intended to describe the current state of agroecosystems. The richness and abundance of invertebrates have often been used to distinguish farming systems for different crops (Álvarez et al , 2000; Letourneau & Goldstein, 2001; Hadjicharalampous et al , 2002; Döring et al , 2003; Purtauf et al , 2005; Clough et al , 2007; Jackson et al , 2007). An alternative approach is to use a higher taxonomic level of insects.…”

Section: Introductionmentioning

confidence: 99%

Testing the suitability of insect orders as indicators for olive farming systems

Cotes

Campos

Garcı́a

et al. 2011

Agricultural and Forest Entomology

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1 A previous study suggested the use of certain insects groups as indicators for detecting organic olive farming in Southern Spain. To validate the use of these groups, insects were collected from olive orchards in Cordoba and Granada, comprising two Andalusian provinces with different surrounding landscapes. 2 Canopies were sampled using the branch-beating technique during pre-blooming and post-blooming periods over 3 years in Granada (1999, 2000 and 2003) and 1 year in Cordoba (2003). 3 Using a nonparametric linear discriminant analysis method, based on the knearest neighbour algorithm, two discriminant functions were constructed. A first discriminant model took into account interannual variability in Granada Province and the second model focused on environmental heterogeneity between the two provinces. Cross-validation techniques, such as leave-one-out and split-sample, were applied to the associated discriminant functions for each model to check their performance. 4 Even though differences existed with respect to the insect composition of the regions, the second model correctly classified 78.1% of the sampled blocks under the nonorganic and organic farming systems at the same time as taking into account two orders: Coleoptera and Hemiptera [excluding Euphyllura olivina olivina (Psyllidae) and the Heteroptera suborder]. The results suggest that the relative abundance of these groups in the post-blooming period could constitute a potential bio-indicator of organic olive farming system.Keywords Hemeroby and Shannon indexes, nonparametric linear discriminant analysis, pre-blooming and post-blooming period.

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Soil Arthropods (Coleoptera, Isopoda) in Organic and Conventional Agroecosystems

Cited by 32 publications

References 17 publications

Macrofauna edáfica asociada a sistemas agroforestales en la Amazonia Colombiana

Macrofauna edáfica asociada a sistemas agroforestales en la Amazonia Colombiana

Comparing conventional and organic olive groves in central Greece: plant and bird diversity and abundance

Testing the suitability of insect orders as indicators for olive farming systems

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