Saved in:
| Main Author: | |
|---|---|
| Format: | Artículo científico |
| Language: | en |
| Published: |
Universidad de Costa Rica
2007
|
| Subjects: | |
| Online Access: | https://www.redalyc.org/articulo.oa?id=44955208 |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
Table of Contents:
- The distribution of nutrients, dissolved oxygen and chlorophyll a in the upper Gulf of Nicoya, Costa Rica, a tropical estuary Daniel Ballestero Jaime Palter Sandra León Coto Biología nutrients Costa Rica Gulf of Nicoya tropical estuary dissolved oxygen in the Gulf of Nicoya on the Pacific Coast of Costa Rica, nutrient rich equatorial subsurface water(ESW) is upwelled in much of the lower gulf. These offshore waters are often regarded as the major source ofnutrients to the gulf. However, for most of the year, the ESW has little influence on the nutrient content of theupper gulf, which has a distinct character from the lower gulf. The upper gulf, extending 40 km north of therestriction between Puntarenas Peninsula and San Lucas island, is bordered primarily by mangrove swamps, isless than 20 m deep, and is less saline than the lower gulf. We surveyed the upper gulf for dissolved inorganicnitrogen, phosphate, silicate, dissolved oxygen, and chlorophyll in November 2000, January and July 2001. Allnutrients are more concentrated in the upper gulf during the rainy and transitional seasons than the dry season,significantly so for phosphate and silicate. Throughout the year, nutrients tend to be much more concentratedin the less saline water of the upper gulf. This trend indicates that discharge from the Tempisque River predominantlycontrols spatial and temporal nutrient variability in the upper gulf. However, nutrient rich ESW,upwelled offshore and mixed to form a mid-temperature intermediate water, may enter the inner gulf to providean important secondary source of nutrients during the dry season. Rev. Biol. Trop. 55 (2): 427-436. Epub 2007June, 29. 2007 artículo científico 0034-7744 https://www.redalyc.org/articulo.oa?id=44955208 en http://www.redalyc.org/revista.oa?id=449 Revista de Biología Tropical application/pdf Universidad de Costa Rica Revista de Biología Tropical (Costa Rica) Num.2 Vol.55