geoscience.net logo
+ Resolve Article
+ Follow Us
Follow on FacebookFollow on Facebook
Follow on TwitterFollow on Twitter

+ Translate
+ Subscribe to Site Feed
GeoScience Most Shared ContentMost Shared Content

Camponotus punctulatus ant's demography: a temporal study across land-use types and spatial scales


, : Camponotus punctulatus ant's demography: a temporal study across land-use types and spatial scales. Insectes Sociaux 54(1): 42-52

Agricultural activities promote the explosion of diverse pest populations. In Argentina, the ant Camponotus punctulatus invades agricultural fields after production ceases. The temporal demography and spatial distribution of colonies of C. punctulatus were studied over a five year period using replicated plots of different land use types representing a gradient of increasing agricultural disturbance. We experimentally tested the hypothesis that the increase in C punctulatus colony density was related to increasing levels of agricultural disturbance. Abandoned rice fields represented the situation with greatest disturbance. Sown pastures were intermediate. Natural grasslands represented no agricultural disturbance. The predictions were (1) the greater the soil disturbance produced by agriculture, the greater the susceptibility for invasion by C. punctulatus, (2) rice fields offers greater opportunities for establishment of colonizing species than sown pastures, and (3) disturbed land use areas that were more recently colonized as well as land use areas with greater soil disturbance will exhibit patterns of colony aggregation at a small scale but with time the patterns will become uniform. Initially, colonies in the abandoned rice fields had a higher annual mortality and larger turnover than in sown pastures. Over five years, abandoned rice fields sustained higher densities of colonies than sown pastures. The colonies were the largest and had the longest lifespans in abandoned ricefields. Natural grasslands had the lowest colony density, survivorship, and size but had variable levels of colonization. More than one type of spatial distribution was found in field replicates. At small spatial scales across disturbed land use types, replicates exhibited regular distributions. At greater spatial scales, spatial distributions were mostly random in sown pastures, there were many cases of aggregation in rice fields, although some cases of uniform distributions were also found in all disturbed land uses. These results highlight significant intraspecific variation in ant demography across types of land use, space, and time, and show a clear predisposition of C punctulatus to invade and successfully establish in the most disturbed land use types. Hypotheses that can account for the changes in demography across land use types are discussed.

US$19.90

DOI: 10.1007/s00040-007-0906-0


Other references

Koehler, U., 1961: The heart of the aging person. Das Deutsche Gesundheitswesen 16: 586-591

Penner J.; Swisher S.; Schwartz K.; Murray C.; Bridgham R.; Snellman S., 1987: Impact of blood center guidelines on platelet use. Transfusion (Bethesda) 27(6): 555

Gladilovich B.R.; Antonova G.G.; Vard Y.N.P.; Drel R.I.; Kurbatova R.I.; Mikhailyk E.V.; Timonina N.Y., 1969: Contents of trace elements in loamy sod podzolic soils of the kalinin region. Zapiski Leningradskogo Sel'skokhozyaistvennogo Instituta 134: TRANS 46-51

Byers, A.P.; Hunter, A.G.; Seal, U.S.; Graham, E.F.; Tilson, R.L., 1990: Effect of season on seminal traits and serum hormone concentrations in captive male Siberian tigers (Panthera tigris). Electroejaculates and serum samples were collected throughout the year from 5 male Siberian tigers. Semen quality, seminal plasma chemistry and serum hormone concentrations were evaluated and analysed as a function of season. Semen volume, concent...

Olivin, J., 1980: Relation entre l'ecologie et l'agriculture de plantation. Synthese des travaux effectues par I.R.H.O. and Orstom. Oleagineux, 352: 65-78

Caullet, V.; Marsal, N.; Wolfersberger, D.; Sciamanna, M., 2012: Vortex induced rotation dynamics of optical patterns. We demonstrate that modulation instability leading to optical pattern formation can arise by using nonconventional counterpropagating beams carrying an orbital angular momentum (optical vortices). Such a vortex beam is injected into a nonlinear si...

Peroni, D.; Coghi, A., 2008: Recurrent emergency department visits for asthma in children: an opportunity for asthma care improvement?. Allergologia et Immunopathologia 36(2): 57-58

Thanaraj, T.A.; Robinson, A.; Muilu, J.; Riethoven, J.J., 2001: Paradigm shifts in the approaches for gene annotation. Briefings in Bioinformatics 1(4): 324-329

Khalil, S.K.; Atkins, E.D., 2004: Investigation of glass-ionomer cements using differential scanning calorimetry. Six commercial glass-ionomer cements commonly used for various dental applications have been investigated using differential scanning calorimetry (DSC). The heat-flow behaviour and heat capacity of the cements were measured during isothermal (at 3...

Rodriguez, A.E.; Rodriguez-Granillo, G.A.; Palacios, I.F., 2007: Late stent thrombosis: the Damocle's sword of drug eluting stents?. As a result of the introduction of drug eluting stents (DES) to clinical practice, angiographic and clinical parameters of restenosis have been significantly improved. However, several recent publications have raised concerns about long-term safet...