The hydroecological controls and conservation value of beetles on exposed riverine sediments in England and Wales

The microspatial distribution of beetles (Coleoptera) on exposed riverine sediments (ERS)

“…Our research at the microscale supports the findings of Sadler et al (2004) at a larger scale; that species are associated with distinct microhabitats and that greater microhabitat heterogeneity induces greater diversity of ERS beetles. Species distributions were mainly related to lateral environmental gradients, rather than visibly distinct microhabitats (e.g.…”

“…The study site was within a regulated, but semi-natural "wandering gravel bed" section (sensu Church, 1983) of the River Severn (3°25´E, 52°30´N), that is characterised by a high quality ERS beetle fauna in a UK context (Sadler et al, 2004). Three distinct patches of ERS (Fig.…”

“…sity of microhabitats support more species rich assemblages that contain a larger number of rare and specialist species (Sadler et al, 2004). Increasing the understanding of diversity distribution, resource partitioning and competitive interactions at the microscale, should provide an essential insight into the processes maintaining community diversity and ecological function in ERS and riparian systems.…”

Patterns of beta diversity in riparian ground beetle assemblages (Coleoptera Carabidae): A case study in the River Aniene (Central Italy)

“…Several studies have used ground beetles to signal effects caused by climate change (Ashworth 1996), habitat fragmentation (e.g., Magura et al 2001;Lövei et al 2006), urbanization Magura et al 2004), forest alteration and management (e.g., Niemelä et al 1993;Koivula et al 2002;Pearce & Venier 2006), succession (Koivula et al 2002), land use (Vanbergen et al 2005) and management practices in grasslands Blake et al 1996), in croplands (Kromp 1999) and in logging forests in temperate (Szyszko 1983;Brandmayr et al 2009) or boreal zones (Niemelä et al 1993). In spite of the conservation importance of river banks (Kleinwächter & Rickfelder 2007), the study of community structure of riverine ground beetle assemblages has received considerably less attention (Eyre et al 2001;Bonn et al 2002;Sadler et al 2004). Assessing whether there is a link between community composition of riverine ground beetles and environmental conditions may provide important information for bio-conservation.…”

Dél-alföldi pókközösségek szerkezete

“…Ennek ellenére nem minden esetben találunk ezeken az élőhelyeken magasabb faji diverzitást, a fauna a folyó kiöntéseinek rendszeres zavaráshoz alkalmazkodott specialista fajokból áll össze (Sabo et al 2005). Ezek közül számos igen ritka, csak a folyópartokon fordul elő (Andersen és Hanssen 2005;Sadler et al 2004). A hullámtérben előforduló ízeltlábúak a mentett oldaliak közül nagyrészt azok, amelyek képesek túlélni az áradásokat (r-stratégista, opportunista fajok).…”