Now showing items 21-30 of 208
Searching for generality in the patterns of parasite abundance and distribution: Ectoparasites of a South African rodent, Rhabdomys pumilio
(Elsevier Publishers, 2009)
We studied abundance and distribution of seven ectoparasite species (fleas Chiastopsylla rossi and Dynopsyllus ellobius, a louse Polyplax arvicanthis, mites Androlaelaps fahrenholzi and Laelaps giganteus and two ticks ...
Population regulation of a classical biological control agent: larval density dependence in Neochetina eichhorniae (Coleoptera: Curculionidae), a biological control agent of water hyacinth Eichhornia crassipes
The release of classical biological control agents has reduced the economic, environmental and social problems caused by water hyacinth, Eichhornia crassipes; however, additional control measures are needed in some locations. ...
Assessing the distribution of the Argentine ant using physiological data
(Elsevier Masson SAS, 2009)
To address the lack of physiological approaches in current models assessing the potential distribution of the Argentine ant, we used data on brood development from distinct sources to evaluate a series of degreeday models ...
Fresh and dry ant body mass along the Cederberg "Coast-to-Karoo" transect
Fresh and dry body mass of ants collected along an altitudinal gradient in the Greater Cederberg Biodiversity Corridor (the CIB's Coast-to-Karoo transect).
The (bio)diversity of science reflects the interests of society
For ecologists to develop robust generalizations and principles, a broad taxonomic and geographic spread of research is required, but, in practice, most generalizations are based on the research of individual scientists ...
Phenotypic plasticity and geographic variation in thermal tolerance and water loss of the tsetse Glossina pallidipes (Diptera: Glossinidae): implications for distribution modelling
Using the tsetse, Glossina pallidipes, we show that physiologic plasticity (resulting from temperature acclimation) accounts for among-population variation in thermal tolerance and water loss rates. Critical thermal ...
Karoo road verge study: Plot waypoints in UTM format
This zipped geodataset provides the location of the 240 plots. Additional plot-level environmental data include: - Lat/long position in decimal degrees - annual precipitation (Lynch 2003) - altitude - distance (km) ...
Wind speed and direction on Juniors Kop, Marion Island
Wind speed and direction at 1m height were logged at five locations on Juniors Kop (Marion Island). The loggers were deployed in May 2009 and May 2010, but the data time series differ in length due to sensor damage.
The effects of temperature, body mass and feeding on metabolic rate in the tsetse fly, Glossina morsitans centralis
Metabolic rate variation with temperature, body mass, gender and feeding status is documented for Glossina morsitans centralis . Metabolic rate [mean ± SE; VCO2 = 19.78 ± 3.11 uL CO 2 h −1 in males (mean mass = 22.72 ± ...
Evaluation of the soil degradation state along fence-line contrasts
(Klaus Hess Publishers, 2010)
Five pairs of Observatories with contrasting landuse types and/ or landuse intensities, located in the Woodland Savanna, Thornbush Savanna, Nama Karoo, and Succulent Karoo biomes were investigated to examine the infl ...