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en.wikipedia.org/wiki/Daphnia

The following are listed as vulnerable by IUCN: Daphnia nivalis, Daphnia coronata, Daphnia occidentalis, and Daphnia jollyi. Some species are halophiles, and can be found in hypersaline lake environments, an example of which is the Makgadikgadi Pan. Uses. Daphnia spp. are a popular live food in tropical and marine fish keeping.

www.ncbi.nlm.nih.gov/books/NBK2042

Daphnia populations can be found in a range of water bodies, from huge lakes down to very small temporary pools, such as rock pools (Figures 2.18 and 2.19) and vernal pools (seasonally flooded depressions). Often they are the dominant zooplanktor and form, as such, an essential part of the food web in lakes and ponds.

www.caudata.org/daphnia

I have found that lakes/ponds located in limestone-based areas are good sources of Daphnia, but have never found D. hyalina in small lakes/ponds. But no matter where you are in the world, the chances are there is a locally occuring species of daphnid which is as good as any for fish food purposes.

animaldiversity.org/accounts/Daphnia_magna

This species of water flea can be found in rocky pools along the Atlantic coastline of the northeastern United States. It is not considered to be widespread in this area, but is regularly found in certain pools in Maine. ... Daphnia, but can cause problems when space and resources are limited. Even though these water fleas are one of the larger ...

en.wikipedia.org/wiki/Daphnia_magna

Daphnia magna is a small planktonic crustacean (adult length 1.5–5.0 mm) that belongs to the subclass Phyllopoda.It inhabits a variety of freshwater environments, ranging from acidic swamps to rivers made of snow runoff, and is broadly distributed throughout the Northern Hemisphere and South Africa.. The species has been subject of biological research since the 18th century.

www.microscopy-uk.org.uk/mag/artoct01/hwdaphnia.html

I have a lot of fun collecting and researching daphnia, and over time have found that it doesn't take a lot of effort or expense. While I have found a good number of technical articles on daphnia, much of what I have learned on an amateur level has come more by experimenting and making mistakes, than from any written material.

www.theaquariumwiki.com/wiki/Daphnia

Use a turkey baster to feed the daphnia tank green water several times per day. It is said that keeping pond snails in with your daphnia can help produce food for daphnia from the snail's own waste. It has often been found that daphnia will put up with less-than-perfect conditions too. Dried Daphnia [edit | edit source]

animaldiversity.org/accounts/Daphnia_pulex

Daphnia pulex is the most common species of the water flea, an organism which can be found in almost every permanent, eutrophic (nutrient-rich) water body. A few species are marine, but generally Daphnia , including Daphnia pulex , are freshwater organisms.

betadifferentiatie.files.wordpress.com/2010/09/background...

Background information on Daphnia Part 1 - Physical description Daphnia, commonly called water fleas, are a freshwater zooplankton found in ponds and lakes all over the world. Daphnia received the name water flea due to their jerky swimming motions.

www.amnh.org/learn-teach/curriculum-collections/young...

I found through this study that the Daphnia population increased more in the control and non-polluted pond water than in the polluted pond water (Figure 6) . One of my favorite things about conducting research projects is that you get to meet different people. During the first months of research, I made a visit to the campus of Iowa State ...