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Research Article

How do assemblages of epigeal Araneae and Coleoptera respond to changes in habitat structure caused by sugar cane crops in Northern Argentina?

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Pages 323-342 | Received 21 Dec 2021, Accepted 24 Sep 2022, Published online: 18 Oct 2022

Figures & data

Figure 1. Map of the sampling area located in northwestern Argentina showing the location of the sites considered. Abbreviations N = continuous native forests and W = native forest windbreaks.

Figure 1. Map of the sampling area located in northwestern Argentina showing the location of the sites considered. Abbreviations N = continuous native forests and W = native forest windbreaks.

Figure 2. Species richness analysis by interpolation and extrapolation of continuous native forest (N) and native forest windbreak (W) assemblages by sugar cane plots in the province of Salta. Bars indicate 95% confidence intervals. Abbreviations Sobs. = observed species richness, Sexp. = estimated species richness, LCL and UCL = the bootstrap lower and upper confidence limits for the diversity of order q (with a default value of 0.95) and C. hat = the estimated sample coverage.

Figure 2. Species richness analysis by interpolation and extrapolation of continuous native forest (N) and native forest windbreak (W) assemblages by sugar cane plots in the province of Salta. Bars indicate 95% confidence intervals. Abbreviations Sobs. = observed species richness, Sexp. = estimated species richness, LCL and UCL = the bootstrap lower and upper confidence limits for the diversity of order q (with a default value of 0.95) and C. hat = the estimated sample coverage.

Table 1. Abundance and richness of the families and guilds of Araneae and Coleoptera recorded in the Chaco Serrano.

Figure 3. Relative abundance and richness of Araneae (a) and Coleoptera (b) guilds recorded in continuous native forest (N) and native forest windbreak (W) habitats; Abbreviations 3a: AH = Ambush hunters, GH = Ground hunters, OH = Other hunters, OWW = Orb web weavers, S = Specialists, ShWW = Sheet web weavers, SpWW = Space web weavers; Abbreviations 3b C = Coprophagous, D = Detritivorous, F = Fungivores, H = Herbivores, N = Necrophagous, P = Predators, and X = Xylophages.

Figure 3. Relative abundance and richness of Araneae (a) and Coleoptera (b) guilds recorded in continuous native forest (N) and native forest windbreak (W) habitats; Abbreviations 3a: AH = Ambush hunters, GH = Ground hunters, OH = Other hunters, OWW = Orb web weavers, S = Specialists, ShWW = Sheet web weavers, SpWW = Space web weavers; Abbreviations 3b C = Coprophagous, D = Detritivorous, F = Fungivores, H = Herbivores, N = Necrophagous, P = Predators, and X = Xylophages.

Figure 4. Range / abundance curves of families Araneae (a) and Coleoptera (b) collected in continuous native forest (N) and native forest windbreak (W) habitats in northwestern Argentina.

Figure 4. Range / abundance curves of families Araneae (a) and Coleoptera (b) collected in continuous native forest (N) and native forest windbreak (W) habitats in northwestern Argentina.

Figure 5. Ordination obtained by PCA of the assemblages of families and guilds of Araneae (a) and Coleoptera (b) in relation to the habitats selected a priori (N and W) and with the phenological seasons (Spring= Spr and Summer=Sum).

Figure 5. Ordination obtained by PCA of the assemblages of families and guilds of Araneae (a) and Coleoptera (b) in relation to the habitats selected a priori (N and W) and with the phenological seasons (Spring= Spr and Summer=Sum).

Table 2. Values of beta diversity (βSOR) and their components of turnover (βSIM) and nestedness (βNES) for Araneae and Coleoptera comparing between habitats, between sites and between seasons (spring and summer).

Table A1. Araneae: Supplementary material.

Table A2. Coleoptera: Supplementary material.