Species Diversity of Myrmecofauna and Araneofauna Associated with Agroecosystem and Forest Fragments and their Interaction with Carabidae and Staphylinidae (Coleoptera)

Haddad, Gianni Queiroz; Cividanes, Francisco Jorge; Martins, Ivan Carlos Fernandes

doi:10.1653/024.094.0314

Cited by 10 publications

(6 citation statements)

References 28 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…These remnants of native vegetation are important habitats for the maintenance and conservation of these assemblages of ground spiders, since despite being located in an urban matrix and thus susceptible to anthropic pressures, these areas can conserve structural characteristics of the original natural habitat (Fernández et al 2019), constituting refuges of fundamental importance for the conservation of regional biodiversity (e.g. Candiani et al 2005, Nogueira et al 2006, Haddad et al 2011, Melo et al 2011, Patucci et al 2018, Samu et al 2018).…”

Section: Urban Forest Fragmentsmentioning

confidence: 99%

“…Studies conducted in isolated forest remnants in different anthropogenic matrices show a need to understand this spatial and temporal dynamics, since they are fundamental factors for the conservation of animal communities, including spider assemblages (e.g. Candiani et al 2005, Major et al 2006, Mestre & Gasnier 2008, Benati et al 2010, Haddad et al 2011, Rodríguez-Rodríguez et al 2015.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Ground spiders (Arachnida, Araneae) associated with urban forest fragments in southern Amazon

et al. 2020

View full text Add to dashboard Cite

Forest fragments in urban areas comprise important habitats for a wide variety of species, however, conservationist policies for their maintenance and conservation are still incipient. This study examined the richness and abundance of the ground-spider assemblage in five forest fragments, with areas ranging between 18.5 and 103.98 ha, in the urban perimeter of Sinop, northern Mato Grosso State, southern Amazon region of Brazil. Sampling was carried out using the mini-Winkler extractor and pitfall traps in the dry (July) and rainy (November) seasons of 2017. All fragments were characterized in relation to the area and the Index of Biotic Integrity (IBI), to assess the effect of these variables on richness and abundance of soil spider assemblage. A total of 653 spiders were sampled, corresponding to 25 families and 52 species. Salticidae, Theridiidae, Lycosidae, Linyphiidae, Oonopidae and Symphytognathidae were the most abundant families (63.3% of the total sample). The assemblage was characterized by the dominance of hunting spiders (393 ind.; 60.2%) over web-building spiders (260 ind.; 39.8%). Greater spider abundance and richness was obtained during the rainy season (517 ind.; 79.2%; 41 spp.) as compared with the dry season (136 ind.; 20.8%; 24 spp.). Only 13 species occurred in dry and rainy season. Two species were recorded for the first time in the Amazon region, namely, Anapistula aquytabueraRheims & Brescovit, 2003 (Symphytognathidae) and Opopaea concolor (Blackwall, 1859) (Oonopidae). Species richness was not affected by IBI and area of fragment. Although the statistical model is not significant, species richness increases slightly with IBI and area of fragment. Similarly, abundance of spiders was not affected by IBI and area of fragment. Regardless of the area size, all evaluated forest fragments showed a low and regular IBI, demonstrating that these habitats have suffered with the pressures inherent from the urban perimeter, including the constant expansion of human occupation as well as misuse by the population. Nonetheless, these same fragments revealed considerable richness of species of ground spiders and can thus be categorized as important habitats for the maintenance of regional biodiversity. Therefore, action strategies must be set out to ensure their conservation.

show abstract

Section: Urban Forest Fragmentsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Ground spiders (Arachnida, Araneae) associated with urban forest fragments in southern Amazon

et al. 2020

View full text Add to dashboard Cite

show abstract

“…Ground spiders can reflect changes in land use and agricultural practices (Prieto-Benítez and Méndez 2011) as well as changes in the composition, abundance, and richness of other groups of soil organisms (Dennis et al 2015). Spiders play an important role in natural biological control (Pekár et al 2015), and they are sensitive to tillage (Haddad et al 2011), seeding, harvesting, pesticide application (Rodrigues et al 2013), grazing practices (Bucher et al 2016), and plant cover removal (Bell et al 2001) as well as to changes near the cropping areas.…”

Section: Introductionmentioning

confidence: 99%

Increased grazing intensity in pastures reduces the abundance and richness of ground spiders in an integrated crop-livestock system

Freiberg

Dambros

Rodrigues

et al. 2019

Agron. Sustain. Dev.

View full text Add to dashboard Cite

Ground spiders can reflect the impacts of land-use intensification. In an integrated annual crop-livestock system, the grazing intensification can negatively influence the abundance and richness of ground spiders. We evaluated the difference in abundance, family and species richness, and species composition of ground spiders in the soybean and pasture environments, and the effect of grazing intensity on the spider community under a soybean-pasture rotation. We hypothesized that pastures would have higher spider species richness and a distinct species composition and that the increase in grazing intensity would reduce spider abundance and species richness. We conducted an experiment in an integrated annual croplivestock system under a soybean-pasture rotation in southern Brazil that was managed for 14 years by alternating Glycine max for summer grain production and Avena strigosa + Lolium multiflorum for beef cattle grazing during the winter. We sampled four times over 2 years: twice after the grazing cycles and twice after the soybean harvests. Grazing intensification was measured as grazing heights of 10, 20, 30, and 40 cm. Pitfall traps were installed to capture ground spiders. A total of 2589 spiders were collected and classified into 23 families and 43 species. The abundance of spiders was seven times higher, and species richness was 35% higher in the postgrazing compared with the postsoybean environment. Linear mixed effects models showed that spider abundance and richness were strongly influenced by grazing height, particularly postgrazing, but the influence of grazing height on male spider abundance could still be detected in the postsoybean environment. We have shown for the first time that the management of grazing height affects the abundance and richness of spiders in an integrated annual crop-livestock system. To introduce a grazing cycle to a completely crop-centric production system and regulating grazing intensity can help maintain a more diverse spider community.

show abstract

“…However, species associated with this crop may vary in terms of composition and population levels, depending on the crop year and location (Haddad et al, 2011). Natural enemies of insect pests can also vary and diversity and insect abundance may be altered by agricultural land use as well as forests and other ecosystems near the crops (Pfiffner and Luka, 2000).…”

Section: Introductionmentioning

confidence: 99%

“…Estimates of faunistic indices provide information on distribution, richness and abundance of species within a community. The advantage of such indices is that they generate analyzable data, and by definition, they are devoid of unity, allowing comparisons between communities sampled with a nonstandard method (Wade et al, 2006;Haddad et al, 2011;Martins et al, 2012). Therefore, studies on the diversity of beneficial and pest insects have been performed in different crops (Wade et al, 2006;Stürmer et al, 2012).…”

Section: Introductionmentioning

confidence: 99%

Comparison of beat cloth and entomological net methods for determining faunistic indices of soybean in Rio Grande do Sul, Brazil

Storck

Antúnez

Guedes

et al. 2016

Sci. agric. (Piracicaba, Braz.)

View full text Add to dashboard Cite

Estimates of diversity indices provide information on distribution, richness and abundance of species within a community. The aim of the current study was to estimate faunistic indices (richness, constancy, dominance and abundance) of the species collected by beat cloth and entomological net sampling methods in different soybean crops and to determine the sample size necessary to estimate faunistic indices. Fauna density from 100 soybeans crops located in nine municipalities in Rio Grande do Sul, Brazil, were evaluated. Thirty points, 20 meters apart from one another, were marked in the crops. At each point, insect pests and natural enemies were collected using the two sampling methods. Faunistic indices, including the average and interval estimates carried out by the resampling method, were calculated for each soybean crop. In the samplings using the beat cloth, richness > dominance = abundance > constancy, and using the entomological nets, richness > dominance > abundance > constancy. All faunistic indices other than dominance were greater when using the beat cloth method than those estimated by the entomological net method. The sample sizes required to estimate richness, constancy, dominance and abundance indices were 38, 78, 47 and more than 300, respectively, with an estimation error of 20 % of the average (p = 0.05). Higher values were observed when entomological net was used.

show abstract

Species Diversity of Myrmecofauna and Araneofauna Associated with Agroecosystem and Forest Fragments and their Interaction with Carabidae and Staphylinidae (Coleoptera)

Abstract: BioOne Complete (complete.BioOne.org) is a full-text database of 200 subscribed and open-access titles in the biological, ecological, and environmental sciences published by nonprofit societies, associations, museums, institutions, and presses.

Cited by 10 publications

References 28 publications

Ground spiders (Arachnida, Araneae) associated with urban forest fragments in southern Amazon

Ground spiders (Arachnida, Araneae) associated with urban forest fragments in southern Amazon

Increased grazing intensity in pastures reduces the abundance and richness of ground spiders in an integrated crop-livestock system

Comparison of beat cloth and entomological net methods for determining faunistic indices of soybean in Rio Grande do Sul, Brazil

Contact Info

Product

Resources

About