Ground-dwelling spiders in agroecosystems of the Dry Chaco: a rapid assessment of community shifts in response to land use changes

Argañaraz, Carina I.; Rubio, Gonzalo; Rubio, Meriam; Castellarini, Fabiana

doi:10.1080/14888386.2020.1831605

Cited by 10 publications

(6 citation statements)

References 68 publications

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“…In agreement with reports on other arid and semi-arid environments in Argentina, the arachnid assemblage in northeastern Patagonia was dominated by species of Philodromidae, Gnaphosidae, and Zodariidae [58][59][60][61][62]. Unlike other local studies that include arachnids as part of the ground-dwelling arthropod assemblages [40,63], this work found a low relative abundance of wolf spiders (Lycosidae).…”

Section: Discussionsupporting

confidence: 89%

“…This could explain the inconsistencies between the current study, based on a high-severity fire, and the results of Pompozzi et al [61]. Finally, L. birabeni has been found to be sensitive to other anthropogenic disturbances such as grazing and agriculture in different areas in Argentina [58,69]. Thus, it could be a useful species for monitoring the response of local biological communities to different types of disturbances.…”

Section: Discussioncontrasting

confidence: 80%

“…In addition, seven of the eight guilds currently proposed on a global scale were recorded [23]. Like the taxonomic composition, the functional structure is similar to that found in other drylands of the region [58,59], with a predominance of species that are active hunters and non-web building. A particularity of the assemblage studied was the higher abundance of philodromids, represented by two species of the genus Petrichus.…”

Section: Discussionmentioning

confidence: 56%

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Ground-Dwelling Arachnids and Fire Disturbance: A Case Study in Northeastern Patagonia (Argentina)

Martínez

Cheli

Grismado

et al. 2022

Fire

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Fire is one of the main disturbances in northeastern Patagonia. Wildfires are becoming more frequent and severe, threatening the sustainability of local ecosystems. Arachnids respond markedly to environmental modifications and can regulate processes linked to lower trophic levels. Assessing changes in arachnid diversity is useful to understand the effect of fire on animal assemblages and ecosystem functionality. The aim of this study was to analyze the response of the ground-dwelling arachnid assemblage to fire disturbance. Eight sampling sites were selected: four burned and four unburned. Arachnids were sampled using pitfall traps. The taxonomic and functional structure of the assemblage was found to differ between burned and unburned areas. This change was related to major taxa turnover. On the other hand, the alpha diversity did not differ significantly according to fire disturbance. The abundance of specialist spiders decreased significantly in burned areas, possibly related to post-fire changes in the composition and structure of the plant community. In addition, significant species indicators of unburned and burned sites were found. The results of this study are useful for ecosystem management and the development of biodiversity conservation strategies in northeastern Patagonia, an area severely affected by fires.

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Section: Discussionsupporting

confidence: 89%

Section: Discussioncontrasting

confidence: 80%

Section: Discussionmentioning

confidence: 56%

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Ground-Dwelling Arachnids and Fire Disturbance: A Case Study in Northeastern Patagonia (Argentina)

Martínez

Cheli

Grismado

et al. 2022

Fire

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“…With this method, spiders, at the species or family level, have been assessed as indicators of different groups. For example, habitat (Ghione et al 2013;Aisen et al 2017;Quijano-Cuervo et al 2019), habitat in a gradient of disturbance (Kaltsas et al 2014;Argañaraz et al 2020a; van Rensburg et al 2020), management (Torma et al 2019;Argañaraz et al 2020b;Topa et al 2021), succession and restoration (Cristofoli et al 2010;Malumbres-Olarte et al 2013;Yekwayo et al 2019), pollution (Horváth et al 2001;Nahmani et al 2006), soil quality (Nuria et al 2011;Rousseau et al 2013), colonization of agroecosystems (Royauté and Buddle 2012), forest fragmentation and degradation (do Amaral Nogueira and Pintoda-Rocha 2016), seasons (Campuzano and Padilla-Ramírez 2021) and ecosystem services (Elie et al 2018). However, the majority of the research mentioned was carried out in non-South American countries.…”

Section: ₁₁₂₁ I��mentioning

confidence: 99%

“…However, the majority of the research mentioned was carried out in non-South American countries. In Argentina, there is an information gap related to this subject as the only studies carried out in this country were those conducted by Aisen et al (2017), Argañaraz et al (2020aArgañaraz et al ( , 2020b, and Martínez et al (2022). Besides, such investigations have been conducted using only soil-dwellers spiders, which are also commonly used in other countries.…”

Section: ₁₁₂₁ I��mentioning

confidence: 99%

Las arañas saltadoras (Araneae: Salticidae) como indicadoras del estado de conservación de los hábitats en el Chaco Oriental

Nadal

2022

Ecol. Austral

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A��. The spiders of the Salticidae family can be valuable indicators of various environmental conditions because they are distributed over almost all continents and are found in a wide variety of habitats and in all climatic seasons. It was assessed if species of Salticidae function as indicators of the conservation status of habitats and if the use of adult+juvenile or adult-only data yields different results. Spiders were collected in two natural parks and two semi-natural areas located between both parks in an area of Eastern Chaco, Argentina. The samples were taken from three types of habitats: foliage, leaf li�er and grassland. The analysis of indicator species was conducted with the indicator value index (IndVal). A high IndVal value for a species in a habitat (e.g., semi-natural grassland) indicates that it is specific (relatively abundant) and faithful (evenly distributed) to that habitat. The species that presented IndVal values >0.45 and >0.70 were classified as detectors and indicators, respectively. Indicator species are highly characteristic of a group (exclusive or nearly exclusive), while detector species prefer a group, but are not exclusive to it. Philira micans was found to be a detector for the semi-natural foliage; Semiopyla viperina, for the natural leaf li�er and Maeota dorsalis, for the natural grassland. The use of the adult+juvenile dataset provided more information about the number of IndVal-significant species; the three detector species mentioned were detected exclusively from this dataset. This study demonstrates that Salticidae spiders in the studied area are sensitive to the conservation status of the analyzed habitats as detector species were recorded. Besides, this study demonstrates that the adult+juvenile dataset improves the detection of species sensitive to changes.

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Urbanization effect of homogenization on ground-dwelling arachnids’ diversity in natural forest and peatland remnants

Argañaraz

Benitez²,

Soler³

et al. 2022

J Insect Conserv

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Ground-dwelling spiders in agroecosystems of the Dry Chaco: a rapid assessment of community shifts in response to land use changes

Cited by 10 publications

References 68 publications

Ground-Dwelling Arachnids and Fire Disturbance: A Case Study in Northeastern Patagonia (Argentina)

Ground-Dwelling Arachnids and Fire Disturbance: A Case Study in Northeastern Patagonia (Argentina)

Las arañas saltadoras (Araneae: Salticidae) como indicadoras del estado de conservación de los hábitats en el Chaco Oriental

Urbanization effect of homogenization on ground-dwelling arachnids’ diversity in natural forest and peatland remnants

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