Abundance, richness, seasonal and altitudinal dynamics of aquatic true bugs (Heteroptera) in mountain wetlands of Argentina.

SCHEIBLER, E. E.; MELO, M. C.; MONTEMAYOR, S. I.; SCOLLO, A. M.

WETLANDS

SPRINGER

Lugar: Madison; Año: 2016 vol. 36 p. 265 - 274

0277-5212

Mountain wetlands provide unique information because their biota ishighly specific and contributes significantly to regional diversity. The goalsof this study were assessing altitudinal and temporal variation in thedistribution of Heteropteran assemblages inmountain wetlands; and studying the phenology of the most abundant species. Allstages of Heteroptera and data on environmental variables were collectedmonthly over one year from five mountain wetlands. A simple community structure,and also a low richness of aquatic true bugs,composed of four Heteropteran families (Corixidae, Belostomatidae, Notonectidaeand Gelastocoridae), characterized our ponds. Richness and abundance variedtemporally and spatially (p<0.0001); and increased at higher elevations. Additionally,the highest abundance of coldstenothermal species occurred at the highest altitudes where harsh conditions areprevalent. Ectemnostega (E.) quadrata and S. (T.) jensenhaarupi, both endemic to theAndes region, were the most abundant species. Both these species showedunivoltine cycles and overwintered as adults. Biodiversity of the Heteropterareached maximum values in summer when water temperature increased. Temporal and spatial monitoringstudies provide key information on the distribution, diversity, and habitatrequirements of Heteropteran species as well as on conservation and managementof these vulnerable habitats and species which are faced with climate warming.