TITLE

Trade-offs between microhabitat selection and physiological plasticity in the Antarctic springtail, Cryptopygus antarcticus (Willem)

AUTHOR(S)
Hawes, T. C.; Bale, J. S.; Worland, M. R.; Convey, P.
PUB. DATE
June 2008
SOURCE
Polar Biology;Jun2008, Vol. 31 Issue 6, p681
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
In the maritime Antarctic, terrestrial arthropods have recourse to two strategies to mitigate low summer temperatures: (1) physiological plasticity and (2) avoidance via microhabitat insulation. This study investigated the interaction between these strategies in the springtail, Cryptopygus antarcticus, established in situ within contrasting microcosms (buffered vs. exposed) and within two sets of habitat simulations (wet vs. dry) over diurnal scales through the Antarctic summer. Significant differences were found in the cold hardiness of springtails sampled simultaneously from each microcosm. Exposed animals showed greater plasticity in the “true” austral summer, but as field temperatures declined preceding the onset of winter, buffered animals showed greater resilience. Overall, water was found to inhibit the buffering effect of moss and there was a significantly greater discrimination between buffered and exposed microcosms in the dry treatment. Analysis of microhabitat temperatures indicate that it is thermal variability not lower temperature that is responsible for the greater plasticity of exposed animals.
ACCESSION #
31660890

 

Related Articles

  • Spatial heterogeneity and functional response: an experiment in microcosms with varying obstacle densities. Hauzy, Céline; Tully, Thomas; Spataro, Thierry; Paul, Grégory; Arditi, Roger // Oecologia;Jul2010, Vol. 163 Issue 3, p625 

    Spatial heterogeneity of the environment has long been recognized as a major factor in ecological dynamics. Its role in predator–prey systems has been of particular interest, where it can affect interactions in two qualitatively different ways: by providing (1) refuges for the prey or (2)...

  • Review of the projected impacts of climate change on coastal fishes in southern Africa. Potts, W.; Götz, A.; James, N. // Reviews in Fish Biology & Fisheries;Dec2015, Vol. 25 Issue 4, p603 

    The coastal zone represents one of the most economically and ecologically important ecosystems on the planet, none more so than in southern Africa. This manuscript examines the potential impacts of climate change on the coastal fishes in southern Africa and provides some of the first information...

  • Habitat size determine algae biomass in tank-bromeliads. Marino, Nicholas; Guariento, Rafael; Dib, Viviane; Azevedo, Fernanda; Farjalla, Vinicius // Hydrobiologia;Dec2011, Vol. 678 Issue 1, p191 

    The primary goal of this study was to evaluate the relative importance of habitat physical properties, bottom-up and top-down factors, and their interaction on algae biomass in tank-bromeliads. We sampled algae biomass (chlorophyll-a concentration), micro-metazoan density, mosquito abundance,...

  • Species-area relationships arise from interaction of habitat heterogeneity and species pool. Kolasa, J.; Manne, L.; Pandit, S. // Hydrobiologia;Apr2012, Vol. 685 Issue 1, p135 

    Species-area relationships (SARs) represent a ubiquitous and useful empirical regularity characterizing biodiversity. The rate of species accumulation, captured by the value of the exponent, z, varies substantially and for many reasons. We hypothesized that one of the major contributors to this...

  • An experimental setup to assess earthworm behaviour in compacted soil. Müller-Inkmann, Michael; Fründ, Heinz-Christian; Hemker, Olaf // Biology & Fertility of Soils;Apr2013, Vol. 49 Issue 3, p363 

    A new experimental setup for studying the behaviour of earthworms in compacted soil is described. The main features are (1) the soil column containing the earthworms is surrounded by repellent soil, (2) a compacted soil block is placed on top of this column, (3) the soil block can be prepared...

  • Effect of two commercial formulations of Bacillus thuringiensis subsp. kurstaki (Dipel 8L and Dipel 8AF) on the collembolan species folsomia candida in a soil microcosm study. Addison, J.; Holmes, S. // Bulletin of Environmental Contamination & Toxicology;Nov1995, Vol. 55 Issue 5, p771 

    The article presents a study on the effects of two commercial products of Bacillus thuringiensis on the collembolan species of folsomia candida in the microcosm of soil. The article uses various methods such as providing experiments on the two treatments of Dipel®8L, and the extraction of...

  • Invasive Asian earthworms of the genus Amynthas alter microhabitat use by terrestrial salamanders. Ziemba, Julie L.; Cameron, Alex C.; Peterson, Kim; Hickerson, Cari-Ann M.; Anthony, Carl D. // Canadian Journal of Zoology;2015, Vol. 93 Issue 10, p805 

    Invasive earthworms are rapidly transforming detrital communities in North America. Recent studies have investigated the effects of European earthworms, whereas Asian earthworms, such as species of the genus Amynthas Kinberg, 1867, remain understudied. Amynthas is a surface-dwelling earthworm...

  • Transitory versus Persistent Effects of Connectivity in Environmentally Homogeneous Metacommunities. Limberger, Romana; Wickham, Stephen A.; Mouquet, Nicolas // PLoS ONE;Aug2012, Vol. 7 Issue 8, Special section p1 

    While the effect of habitat connectivity on local and regional diversity has been analysed in a number of studies, time- dependent dynamics in metacommunities have received comparatively little consideration. When local patches of a metacommunity are identical in environmental conditions but...

  • The Spiral Path. Pulver, Fred // Macrobiotics Today;Mar/Apr2003, Vol. 43 Issue 2, p14 

    Comprehends the pattern of life based on the spiral pattern of the macrocosm. Influences that coerce one to think in a linear manner; Example of spiralic education found in George Ohsawa's writing; Ways to enjoy the spiral path of life.

Share

Read the Article

Courtesy of THE LIBRARY OF VIRGINIA

Sorry, but this item is not currently available from your library.

Try another library?
Sign out of this library

Other Topics