Flowing water ecosystems, such as streams and rivers, are also called ________ ecosystems.
In lakes and ponds, the open water zone extending to the depth of light penetration is referred to as the
________
In lakes and ponds, the deepest zone beneath the compensation depth of light is referred to as the ________
zone.
In lakes and ponds, the ________ zone supports the richest diversity of life.
The tiny, photosynthetic, primary producers of open water such as desmids, diatoms, and filamentous algae, are
referred to as ________.
________ refers to the nutrient enrichment of aquatic ecosystems.
A relatively ________ lake is characterized by an abundance of nutrients, abundant algal growth, and shallow
light penetration.
Pools in streams and rivers are the sites of ______________.
In streams and rivers, the group of invertebrates that feeds on algae coating stones and pebbles is referred to as
the ________.
When rivers flow into the ocean, they create a zone of mixing of freshwater with saltwater referred to as a(n)
________.
________ refers to the plants and animals living on the bottom of the ocean.
What are some important factors for life in freshwater ecosystems?
In lakes and ponds, photosynthesis occurs primarily in the
In lakes and ponds, decomposition occurs primarily in the _____________________.
In lakes and ponds, oxygen concentrations are lowest in the ___________________.
In terms of size and depth an eutrophic lake is most likely to be _____________________.
Which is the location of primary production in streams and rivers?
Which group of invertebrates feeds on coarse debris, such as leaves, that fall into streams and rivers?
Which group of invertebrates feeds on the algal coating of stones and rubble?
As a stream or river descends, it generally grows
What is the difference between a eutrophic and oligotrophic lake?