Dispersal in freshwater invertebrates
Increased use of molecular markers has provided considerable insight into the frequency of dispersal in freshwater invertebrates, particularly for groups such as crustaceans and bryozoans that disperse passively through the transport of desiccation-resistant propagules.
Mediterranean Europe as an area of endemism for small mammals rather than a source for northwards postglacial colonization
- D. Bilton, P. Mirol, S. Mascheretti, K. Fredga, J. Zima, J. Searle
- Environmental ScienceProceedings of the Royal Society of London…
- 7 July 1998
There is a general perception that central and northern Europe were colonized by range expansion from Mediterranean refugia at the end of the last glaciation. Data from various species support this…
The Effect of Geographical Scale of Sampling on DNA Barcoding
A CO1 data set of aquatic predaceous diving beetles of the tribe Agabini is presented and it is shown that even if samples are collected to maximize the geographical coverage, up to 70 individuals are required to sample 95% of intraspecific variation, showing that the geographical scale of sampling has a critical impact on the global application of DNA barcoding.
Dispersal, Genetic Differentiation and Speciation in Estuarine Organisms
It is concluded that estuarine environments tend to restrict gene flow and impose distinct selective regimes, generating physiologically adapted populations divergent from their marine counterparts, and the potential for in situ speciation in complete or partial isolation.
Does macrophyte fractal complexity drive invertebrate diversity, biomass and body size distributions?
Fractal indices are used to describe the structural complexity of mixed stands of aquatic macrophytes to examine the effects of habitat complexity on the composition of free-living invertebrate assemblages that utilise the habitat in three dimensions, suggesting that both habitat fractal complexity and allometry may control density-body size scaling in lentic macroinvertebrate communities.
How wide to cast the net? Cross-taxon congruence of species richness, community similarity and indicator taxa in ponds
It is suggested that Coleoptera have a number of advantages as a surrogate taxon, being diverse, easily sampled, readily identified, taxonomically stable, ecologically well understood and occurring across a wide spectrum of pond types.
Oxygen supply in aquatic ectotherms: partial pressure and solubility together explain biodiversity and size patterns.
A reappraisal of how organismal thermal physiology and oxygen demands together shape aerobic performance in aquatic ectotherms and the new insight of how these components change with temperature have broad implications for predicting the responses of aquatic communities to ongoing global climate shifts.
Thermal tolerance, acclimatory capacity and vulnerability to global climate change
A positive relationship between upper thermal tolerance and its acclimatory ability is demonstrated in a well-defined clade of closely related European diving beetles, indicating that species with the lowest tolerance to high temperatures will be most at risk from the adverse effects of future warming.
Macrophysiology: A Conceptual Reunification
- K. Gaston, S. Chown, M. van Kleunen
- Biology, Environmental ScienceAmerican Naturalist
- 29 September 2009
This article provides a conceptual framework for the continued development of macrophysiology and subdivides this framework into three major components: the establishment ofmacrophysiological patterns, determining the form of those patterns (the very general ways in which they are shaped), and understanding the mechanisms that give rise to them.
What determines a species' geographical range? Thermal biology and latitudinal range size relationships in European diving beetles (Coleoptera: Dytiscidae).
- P. Calosi, D. Bilton, J. Spicer, S. Votier, A. Atfield
- Environmental ScienceJournal of Animal Ecology
This study is the first to provide empirical support for a relationship between thermal physiology and range size variation in widespread and restricted species, conducted using the same experimental design, within a phylogenetically and ecologically controlled framework.