Although recent articles state that jellyfish populations are increasing, most available
evidence shows that jellyfish abundances fluctuate with climatic cycles. Reports of …

Much speculation and some evidence suggest that jellyfish and ctenophore populations
have increased in recent decades. Unfortunately, few past records exist with which to …

This study provides a systematic account of the hydrozoan species collected up to now in
the Mediterranean Sea. All species are described, illustrated and information on morphology …

Outbreaks of jellyfish are reported worldwide, yet the environmental factors that control the
sizes of jellyfish populations are not well understood. The scyphomedusan Chrysaora …

There is a need for monitoring the status and trends of freshwater biodiversity in order to
quantify the impacts of human actions on freshwater systems and to improve freshwater …

Global diversity of inland water cnidarians is low, containing< 40 species belonging to
phylogenetically distinct groups representing independent invasion events: the common and …

Little is known on the biogeography of Rotifera, particularly regarding the littoral taxa. Here,
the biogeography of the most specious group of littoral Rotifera, Lecane, is discussed based …

According to the fossil record and DNA data, the Cladocera is an ancient crustacean group.
Recent revisions make their taxonomy amenable to zoogeographical analysis. A bipolar …

Recent catches of jellyfishes have exceeded 500 000 Mt yr–1 and almost all of the
jellyfishes harvested are of the Order Rhizostomeae. In this review we emphasise the …

Several species of scyphozoan medusae occur in river estuaries and other brackish waters
but it is often unknown if the planulae settle and the scyphopolyps reproduce in those low …