Nutrient dynamics in ship harbour, Nova Scotia

Autor: Peter M. Strain
Rok vydání: 2002
Předmět:
Zdroj: Atmosphere-Ocean. 40:45-58
ISSN: 1480-9214
0705-5900
Popis: An intensive study of the water column distributions of the dissolved nutrients silicate, phosphate, nitrate, ammonia and of dissolved oxygen in Ship Harbour, Nova Scotia in 1991 and 1992, has revealed details of, and some of the mechanisms responsible for, nutrient distributions in temperate inlets. Ship Harbour is ∼10km by ∼1 km wide and has a deeper (∼25 m) inner basin separated from coastal waters by a shallow sill (∼7 m). Nutrient distributions here result from a combination of processes within the inlet and the typical seasonal cycle expected for temperate shelf waters. Different sources and processes control each of the nutrients. In Ship Harbour, offshore nutrient supply is important for nitrate and phosphate, but is not important for silicate and ammonia. Biological uptake during the spring is important for nitrate, silicate and phosphate. Remineralization of organic matter in the deep water or the sediments of the inner basin causes concentrations of silicate, phosphate and ammonia to b...
Databáze: OpenAIRE