Of particular note is the wide range of lentic and lotic ecosystems.    From Wordnik.com.  [Tasmanian Wilderness, Australia] Reference

Some of the lentic species have long hairs over their body to help them swim.    From Wordnik.com.  [Insecta (Aquatic)] Reference

Aquatic communities in the Holocene Meander Belts (73a) are largely lentic in nature.    From Wordnik.com.  [Ecoregions of Kentucky (EPA)] Reference

Aquatic communities are largely lentic in nature and Mississippian-type biotic assemblages occur.    From Wordnik.com.  [Ecoregions of Kentucky (EPA)] Reference

Deep-water lentic species like the chironimids can also satisfy their respiratory needs through their body wall.    From Wordnik.com.  [Insecta (Aquatic)] Reference

Rivers and streams are characterized by flowing waters and are called lotic systems (as opposed to lentic systems, such as lakes).    From Wordnik.com.  [River] Reference

Although some wetland types may not have standing surface water at all times, they are considered lentic ecosystems for the purposes of this chapter.    From Wordnik.com.  [Freshwater ecosystems in the Arctic] Reference

Sedimentary deposits in lotic systems are often poorly preserved compared to lentic systems, owing to the relatively greater reworking of most riverine deposits.    From Wordnik.com.  [Historical changes in freshwater ecosystems in the Arctic] Reference

The dynamics of many of the lotic (river) and lentic (lake) environments in the Arctic are related to permafrost, and freezing can reduce or even halt the flow of rivers.    From Wordnik.com.  [Arctic freshwater environments] Reference

Many of the lentic environments are relatively shallow, and so the species within them have to be able to withstand considerable environmental variability, especially when the water bodies freeze.    From Wordnik.com.  [Arctic freshwater environments] Reference

Two major categories of freshwater ecosystems can be defined as lotic (flowing water) and lentic (standing water), but large variation in size, characteristics, and location is exhibited within each.    From Wordnik.com.  [Freshwater ecosystems in the Arctic] Reference

As continuity of deposition and preservation potential are not equal in all environments, there is a systematic bias in the paleoclimatic record toward well-preserved lentic environments, and to a lesser extent wetlands, as compared to lotic systems.    From Wordnik.com.  [Historical changes in freshwater ecosystems in the Arctic] Reference

Dams play a major role in fragmenting and modifying aquatic habitats, transforming lotic (running water) ecosystems into lentic (standing water) and semi-lentic ecosystems, altering the flow of matter and energy, and establishing barriers to migratory species movement.    From Wordnik.com.  [Ecosystems and Human Well-being~ Wetlands and Water~ Wetlands and Water~ Ecosystems and Human Well-being] Reference

As such, the Mackenzie River system offers the best example of a northern lentic system that is unlikely to be significantly affected by changes in hydrologic processes operating within the north (e.g., direct lake evaporation and precipitation) but will be dependent principally on changes in water-balance processes operating well outside the Arctic.    From Wordnik.com.  [Effects of climate change on general hydro-ecology in the Arctic] Reference

In this sense the term "river" includes all kinds of watercourses, from the tiniest of brooks to the largest of rivers (the term "streams are characterized by flowing waters and are called lotic systems (as opposed to lentic systems, such as Biodiversity Institute of Ontario).    From Wordnik.com.  [Featured Articles - Encyclopedia of Earth] Reference