English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Global: Zendy Plus annual

Presents the access of premium content as premium feature

Premium Content

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Tools annual

Global: Zendy Free Plan

Global: Zendy Tools monthly

Global: Zendy Plus monthly

This work present~ the primary production of the phytoplankton from some fishculture ponds at Itamaracá estuarine area (Pernambuco-Brazil). Samples were collected with a van Dorn water bottle, from June/80 to August/8l at four ponds, one maintained at natural conditions and the other three fertilized with chicken manure. It was utilized the radioactive carbon (" C) method, with "in situ" incubation. The values of primary production varied from l6,86mgC.h-'. mat pond 18, June/8l to 467,3lmgC.h-'. mat pond 21, August/80.

Produção primária do fitoplâncton em viveiros de cultivo de peixes, (Itamaracá-PE).