The species concept is the cornerstone of biodiversity science, and any paradigm shift in the
delimitation of species affects many research fields. Many biologists now are embracing a …

Using a 2010 review of non-indigenous species (NIS) reported in the Mediterranean Sea as
a baseline, this study undertakes a paramount revision of the non-indigenous species list in …

The dynamic geological history of the Ponto-Caspian region drove the evolution of a highly
adaptable endemic fauna that gave rise to notorious aquatic invaders. Amphipod …

A classification is proposed for the order Amphipoda. The Amphipoda includes six
suborders, the Pseudingolfiellidea, Hyperiidea, Colomastigidea, Hyperiopsidea …

The ecological radiation of amphipods is striking among crustaceans. Despite high diversity,
global distribution and key roles in all aquatic environments, little is known about their …

Studies of non-indigenous species (NIS) often tend to focus on medium and large-sized taxa
with potential for remarkable ecological and/or economic impact, whereas the early …

Groundwater is the physically largest freshwater ecosystem, yet one of the least explored
habitats on earth, both because of accessing difficulties and the scarcity of the organisms …

In the last two decades, there has been a substantial progress in the availability of records
for several subterranean taxa, as well as in map** and statistical modeling of biodiversity …

Crustaceans have independently adopted a parasitic mode of life on numerous occasions,
and this chapter reviews the classification and species richness of each of the parasitic …

How far are species distributed on the abyssal plains? Spanning from 3000 to 6000 m below
sea level, abyssal plains cover three-quarters of the ocean floor and are the largest but also …