By Beat Oertli, Régis Céréghino, Jeremy Biggs, Steven Declerck, Andrew Hull, Maria Rosa Miracle
Ponds are an outstanding freshwater source around the globe and characterize thirty percentage of the worldwide floor quarter of status water. additionally, the thousands of ponds which exist express a very excessive biodiversity and feature a excessive capability for surroundings features and companies. regardless of those awesome positive factors, ponds face many threats from various human actions and obtain very little safety lower than eu and nationwide laws. for this reason, there's an pressing have to defend, consolidate and elevate the pond source in Europe. as a way to in achieving those pursuits, the eu Pond Conservation community (EPCN) was once introduced 2004 in Geneva. Its goal is to advertise the attention, knowing and conservation of those small water our bodies within the ecu panorama. This quantity of “Developments in Hydrobiology” provides a range of 31 papers provided in the course of EPCN meetings held in 2006 in France (Toulouse) and in 2008 in Spain (Valencia). They signify a various number of topics from around the continent and North Africa and current new and unique insights into issues as extensive ranging as pond biodiversity; human disturbance; panorama ecology; ecological overview and tracking; functional administration measures; ecological recovery; hydrology and weather switch; invasive species and threatened species.
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Extra resources for Pond Conservation in Europe (Developments in Hydrobiology, 210)
Furthermore, these ponds with a low depth (temporary ponds) did not have species assemblages which were different to those in permanent ponds. g. , 1999) or snowmelt ponds in Wisconsin (Schneider, 1999). A clear negative relationship was demonstrated with species richness, and hydroperiod length influenced community structure. g. , 1995). Ponds situated at a small geographical distance from one another tended to have similar macroinvertebrate assemblages. Such positive spatial autocorrelation of community composition is frequently observed in pond networks, at small and large spatial scales (see Briers & Biggs, 2005).
F. F. Mu¨ller, 1785) PN W Daphnia obtusa (Kurz, 1874) W [ PL PN L [ [ [ [ [ [ S [ [ [ [ [ [ [ [ [ [ [ [ [ PL Diaphanosoma brachyurum (Lie´vin, 1848) L [ [ [ Megafenestra aurita (S. F. F. Mu¨ller, 1776) L [ [ [ PL [ [ [ [ [ [ [ D S D [ [ [ [ [ The symbol ‘[’ indicates that the relative abundance of a species is significantly higher in the water body type of the first column than in the corresponding water body type of the first row (see Table 1 for the abbreviations of the water body types) Reprinted from the journal 23 123 Hydrobiologia (2008) 597:19–27 Fig.
Furthermore, chance events (Jeffries, 1988) are perhaps an influential factor in these Macun ponds. In conclusion, assemblages from ponds (composition, richness) are only weakly influenced by local environmental variables in the Macun cirque, and the main structuring processes are regional and namely the connectivity between ponds (physical connection through tributaries and/or small geographical distances among ponds). , 2003). Expected temporal changes of the species assemblages in the Macun ponds As the ponds from Macun have low species richness, and as chance events are possibly the most influential structuring factor, each pond is the subject of colonization events that will be frequently successful.
Pond Conservation in Europe (Developments in Hydrobiology, 210) by Beat Oertli, Régis Céréghino, Jeremy Biggs, Steven Declerck, Andrew Hull, Maria Rosa Miracle