The aim of this paper is to review literature on species diversity patterns of freshwater
organisms and underlying mechanisms at large spatial scales. 2. Some freshwater taxa (eg …

Of all ecosystems, freshwaters support the most dynamic and highly concentrated
biodiversity on Earth. These attributes of freshwater biodiversity along with increasing …

Aim Global‐scale studies are required to identify broad‐scale patterns in the distributions of
species, to evaluate the processes that determine diversity and to determine how similar or …

We present a new map depicting the first global biogeographic regionalization of Earth's
freshwater systems. This map of freshwater ecoregions is based on the distributions and …

Aim An intensively debated issue in macroecology is whether unicellular organisms show
biogeographic patterns different from those of macroorganisms. One aspect of this debate …

Feeding strategies are typical traits reflecting the adaptation of species to environmental
conditions. This concept is currently developed in some water quality systems (eg Index of …

Abstract Headwaters (stream orders 1–2) traditionally have been considered depauperate
compared to mid-order streams (orders 3–4)—a conclusion that arises from a perception of …

Freshwater invertebrate conservation faces 5 important challenges. First, ̃10, 000 species of
freshwater invertebrates around the world may already be extinct or imperiled. Second …

The hypotheses that beta diversity should increase with decreasing latitude and increase
with spatial extent of a region have rarely been tested based on a comparative analysis of …

Aquatic insects are the dominant invertebrate fauna in most freshwater ecosystems, and
figure prominently in the work of a diverse range of researchers, students, and …