Spider communities in two localities of the RAMSAR Site Chaco Wetlands, Argentina

Spider communities in two localities of the RAMSAR Site Chaco Wetlands, Argentina

Authors

  • Helga Cecilia Achitte Schmutzler Universidad Nacional del Nordeste
  • Gilberto Avalos Universidad Nacional del Nordeste
  • Elena Beatriz Oscherov Universidad Nacional del Nordeste

DOI:

https://doi.org/10.22458/urj.v8i2.1548

Keywords:

Araneae, diversity, forest, grassland, priority area, Chaco Wetlands, Argentina

Abstract

The RAMSAR Site, Chaco wetlands, covers the eastern fringe of the Chaco province, with a surface of 508 000 ha and several environmental unit, like gallery forest, floodplain forests, palm savannahs, grasslands, and others. The studies about the spider fauna from its site are scarce. This study compares spider communities from forest and grassland in San Francisco ranch (27º30’26’’ S - 59º05’03’’ W) located in San Fernando Department and San Carlos ranch (26º57’’46’’ S - 58º38’12’’ W) located in Bermejo Department; on October and November 2013. The forest structure is different, San Francisco forest is mixed with Chaco vegetation and the cattle activity has destroyed an important part of it. The San Carlos forest is a forest gallery also constituted by paranaense species, with cattle activity too, but it with more control and carefulness by their owners. The spiders were collected by foliage beating, leaf litter sifting, hand collecting and G-vac (vacuum sampling) sampling methods. A total of 1 477 spiders grouped into 261 species/morphospecies from 34 families of Araneomorphae. Eighteen species are new records for Argentina. Araneidae was the most abundant families. Araneidae, Theridiidae and Salticidae were the most richness families. Species accumulation curves with 95% confidence interval show that there was significant difference only for grasslands. Rank abundance curve showed that community structure were different on both sites, referring to abundance, dominant species, species composition and proportion of rare species. The comparison of true diversity showed that San Carlos grassland and forest were more diverse than San Francisco, ones it could be related to vegetation structure and high degree of conservation. This study showed an important richness and abundance of spiders that integrate different communities on RAMSAR site areas, and suggests future research on others environments on this site.

References

Avalos, G., Rubio, G. D., Bar, M.E., & González, A. (2007). Arañas (Arachnida, Araneae) asociadas a dos bosques degradados del Chaco húmedo en Corrientes, Argentina. Revista de Biología. Tropical, 55, 899-909.

Avalos, G., Damborsky, M. P., Bar, M. E., Oscherov, E. B., & Porcel, E. (2009). Composición de la fauna de Araneae (Arachnida) de la Reserva Provincial Iberá, Corrientes, Argentina. Revista de Biología Tropical, 57 (1-2), 339-351.

Bar, M. E., Oscherov, E.B, Damborsky, M. P., Avalos, G., & Núñez, E. (2008). Primer inventario de la fauna de Arthropoda de la Región Chaqueña Húmeda. INSUGEO Miscelánea, 17, 331-353.

Chebez, J.C. (2009) Los que se van. Ecorregiones de la Argentina II: las selvas en galería. Recuperado de: http://www.losquesevan.com/ecorregiones-de-la-argentina-ii-las-selvas-en-galeria.74c.

Colebourne, P. H., (1974). The influence of habitat structure on the distribution of Araneus diadematus. Journal of Animal Ecology, 43, 401-409.

Colwell, R. K., (2013). EstimateS: Statistical estimation of species richness and shared species from samples. (Version 9.1.0). User’s guide and application: http://viceroy.eeb. uconn.edu/estimates.

Corronca, J.A., & Abdala, C.S. (1994). La fauna araneológica de la Reserva Ecológica “El Bagual”, Formosa, Argentina. Nota preliminar. Aracnología, 9, 1-6.

Dippenaar-Schoeman, A.S., van den Berg, A.M, & van den Berg, A., (1989). Species composition and relative seasonal abundance of spiders from the field and tree layers of the Roodeplaat Dam Nature Reserve. Koedoe 32, 25-38.

Enders, F. (1976). Clutch size related to hunting manner of Spider species. Annals of the Entomological Society of America, 69, 991- 998.

Escobar, M. J.; Avalos, G., & Damborsky, M. P. (2012). Diversidad de Araneae (Arachnida) en la Reserva Colonia Benítez, Chaco Oriental Húmedo, Argentina. Revista FACENA, 28, 3-17.

Feinsinger, P. (2004). El diseño de estudios de campo para la conservación de la biodiversidad. Editorial FAN, Santa Cruz. 242 p.

Gertsch, W. J. (1979). American spiders (2nd ed.). New York, Van Nostrand.

Grismado, C., &. Goloboff, P. A. (2014). Rastelloidina. En: Roig-Juñent, S.; L.E. Claps & J.J. Morrone (Directores), Biodiversidad de Artrópodos Argentinos volumen 3, pp. 103-110, Editorial INSUE - UNT, San Miguel de Tucumán, Argentina.

Green, J. (1996). Spiders in biological control- An Australian perspective. Revue Suisse de Zoologie Volume. hors série: 245-253.

Hill, M. O. (1973). Diversity and evenness: a unifying notation and its consequences. Ecology, 54,427-432.

Janetos, A., (1986). Web- site selection: are we asking the right questions?: 9-22 (en) SHEAR, W., Spiders webs, behavior, and evolution. Stanford University Press, California

Jiménez-Valverde, A. & Hortal J. (2003). La curva de acumulación de especies y la necesidad de evaluar los inventarios biológicos. Revista Ibérica de Aracnología, 8,151-161.

Jost, L. (2006). Entropy and diversity. Oikos, 113, 363-375.

Jost, L. (2007). Partitioning diversity into independent alpha and beta components. Ecology, 88, 2427-2439.

Krell, F.T. (2004). Parataxonomy versus taxonomy in biodiversity studies - pitfalls and applicability of ‘morphospecies’ sorting. Entomology, Strength in Diversity, XXII International Congress of Entomology, 15-21 August 2004, Brisbane Queensland Australia.

Longino, J. T., & Colwell, R. K. (1997). Biodiversity assessment using structures inventory: capturing the ant fauna of a tropical rain forest. Ecological Applications, 7(4), 1263-1277.

Longino, J. T., Coddington J., & Colwell, R. K. (2002). The ant fauna of a tropical rainforest: estimating species richness in three different ways. Ecology 83, 689–702.

Magurran, A. E. (2004). Measuring Biological Diversity. Oxford: Blackwell Publishing.

Marshall, S., & Rypstra, A. (1999). Spider competition in structurally simple ecosystems. The journal of Arachnology, 27, 343- 350.

Moreno, C. E. (2001). Métodos para medir la biodiversidad. M & T- Manuales & Tesis. SEA, Zaragoza, España. 83 p.

Moreno, C. E., Barragán, F., Pineda, E., & Pavón, N. P. (2011). Reanálisis de la diversidad alfa: alternativas para interpretar y comparar información sobre comunidades ecológicas. Revista Mexicana de Biodiversidad, 82, 1249-1261.

Morrone, J. J. (2001) Biogeografía de América Latina y el Caribe. Manuales y Tesis. Sociedad Entomológica Aragonesa (SEA), 3, Zaragoza, España, 148 pp.

New, T.R. (1999). Untangling the web: spiders and the challenges of invertebrate conservation. Journal of Insect Conservation, 3, 251-256.

Nyffeler, M. (1999). Prey selection of spiders in the field. The Journal of Arachnology, 27, 317-324.

Riechert, S., & Cady, A., (1983). Patterns of resource use and tests for competitive release in a spider community. Ecology, 64 (4), 899-913.

Riechert, S., & Gillespie, R., (1986). Habitat choice and utilization in web-building spiders: 23-48 (en) SHEAR, W. Spiders webs, behavior, and evolution. Stanford University press, CaliforniaColebourne, 1974.

Rubio, G. D., Corronca, J., & Damborsky M. P. (2008). Do spider diversity and assemblages change in different contiguous habitats? A case study in the protected habitats of the Humid Chaco ecoregión, north-east Argentina. Environmenntal Entomology. 37, 419-430.

Swift, M. J., Heal, O. W., Anderson, J. M., (1979). Decomposition in Terrestrial Ecosystems. University of California Press, Berkeley, CA, USA.

Symondson, W. O. C., Sunderland, K. D., & Greenstone, M. H. (2002). Can generalist predators be effective biocontrol agents? Annual Review Entomology, 47, 561–594.

Uetz, G. W.,Halaj J,.&. Cady, A. B. (1999). Pitfal traping in ecological studies of wandering spider. The Journal Arachnology, 27, 270-280.

Whitmore, C., Slotow, R., Crouch, T. E., & Dippenaar-Schoeman, A. S. (2002). Diversity of spiders (Aranae) in a savanna, Northern province, South Africa. The Journal Arachnology, 30, 344-356.

Wise, D. H. (1993). Spider in Ecological Webs. Cambridge, Cambridge, Inglaterra. 328 p.

Wise, D. H., Modenhauer, D. M., & Halaj, J. (2006): Using stable isotopes to reveal shifts in prey consumption by generalist predators. Ecological Applications, 16, 865–876.

Young, O. P., & Edwards, G. B. (1990). Spiders in United States field crops and their potential effect on crop pests. The Journal Arachnology, 18, 1-27.

Published

2016-10-12

How to Cite

Achitte Schmutzler, H. C., Avalos, G., & Oscherov, E. B. (2016). Spider communities in two localities of the RAMSAR Site Chaco Wetlands, Argentina. UNED Research Journal, 8(2), 115–121. https://doi.org/10.22458/urj.v8i2.1548

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