Nutrients as controlling factors of phytoplankton. Production in the Balsfjord - Northern Norway
Fisheries management research is mostly centered on providing the needed knowledge about the fish stock in order to influence fishermen’s behavior at sea for stock sustainability. Management should also integrate knowledge acquired from primary producers (particularly phytoplankton) which form the f...
Main Author: | |
---|---|
Format: | Master Thesis |
Language: | English |
Published: |
Universitetet i Tromsø
2009
|
Subjects: | |
Online Access: | https://hdl.handle.net/10037/9347 |
id |
ftunivtroemsoe:oai:munin.uit.no:10037/9347 |
---|---|
record_format |
openpolar |
spelling |
ftunivtroemsoe:oai:munin.uit.no:10037/9347 2023-05-15T15:37:25+02:00 Nutrients as controlling factors of phytoplankton. Production in the Balsfjord - Northern Norway Adjetey, Eric Teye 2009-05-15 534532 bytes application/pdf https://hdl.handle.net/10037/9347 eng eng Universitetet i Tromsø University of Tromsø https://hdl.handle.net/10037/9347 URN:NBN:no-uit_munin_8905 openAccess Copyright 2009 The Author(s) VDP::Landbruks- og Fiskerifag: 900::Fiskerifag: 920 VDP::Agriculture and fishery disciplines: 900::Fisheries science: 920 Phytoplankton Nitrate Phosphate Silicate Biogenic silica FSK-3910 Master thesis Mastergradsoppgave 2009 ftunivtroemsoe 2021-06-25T17:54:47Z Fisheries management research is mostly centered on providing the needed knowledge about the fish stock in order to influence fishermen’s behavior at sea for stock sustainability. Management should also integrate knowledge acquired from primary producers (particularly phytoplankton) which form the foundations for fish production in implementing fishing controlling measures. Phytoplankton production therefore was studied in the Balsfjord from March to December in 2008. The study focused on nutrients as controlling factors. Water samples were collected at 5, 10 and 50 m from the Balsfjord from early March to early December. Nitrate, phosphate, silicate, Biogenic silica, chlorophyll a concentrations and phytoplankton abundance were analyzed throughout this sampling period. Seawater temperature and pH were also measured during sampling. The peak of the spring bloom occurred on 1st April at 5 and 10 m. Nitrate depletion and phosphate reduction occurred at 5, 10 and 50 m during summer and autumn while silicate showed major reduction during the spring bloom. Change in concentrations of silicate caused a shift in phytoplankton composition and abundance from diatoms to flagellates. The dominant phytoplankton genus and abundance was Chaetoceros during the spring bloom and flagellates after the bloom. Phytoplankton production in this fjord is controlled by nitrate. Master Thesis Balsfjord Northern Norway University of Tromsø: Munin Open Research Archive Norway Balsfjord ENVELOPE(19.227,19.227,69.240,69.240) |
institution |
Open Polar |
collection |
University of Tromsø: Munin Open Research Archive |
op_collection_id |
ftunivtroemsoe |
language |
English |
topic |
VDP::Landbruks- og Fiskerifag: 900::Fiskerifag: 920 VDP::Agriculture and fishery disciplines: 900::Fisheries science: 920 Phytoplankton Nitrate Phosphate Silicate Biogenic silica FSK-3910 |
spellingShingle |
VDP::Landbruks- og Fiskerifag: 900::Fiskerifag: 920 VDP::Agriculture and fishery disciplines: 900::Fisheries science: 920 Phytoplankton Nitrate Phosphate Silicate Biogenic silica FSK-3910 Adjetey, Eric Teye Nutrients as controlling factors of phytoplankton. Production in the Balsfjord - Northern Norway |
topic_facet |
VDP::Landbruks- og Fiskerifag: 900::Fiskerifag: 920 VDP::Agriculture and fishery disciplines: 900::Fisheries science: 920 Phytoplankton Nitrate Phosphate Silicate Biogenic silica FSK-3910 |
description |
Fisheries management research is mostly centered on providing the needed knowledge about the fish stock in order to influence fishermen’s behavior at sea for stock sustainability. Management should also integrate knowledge acquired from primary producers (particularly phytoplankton) which form the foundations for fish production in implementing fishing controlling measures. Phytoplankton production therefore was studied in the Balsfjord from March to December in 2008. The study focused on nutrients as controlling factors. Water samples were collected at 5, 10 and 50 m from the Balsfjord from early March to early December. Nitrate, phosphate, silicate, Biogenic silica, chlorophyll a concentrations and phytoplankton abundance were analyzed throughout this sampling period. Seawater temperature and pH were also measured during sampling. The peak of the spring bloom occurred on 1st April at 5 and 10 m. Nitrate depletion and phosphate reduction occurred at 5, 10 and 50 m during summer and autumn while silicate showed major reduction during the spring bloom. Change in concentrations of silicate caused a shift in phytoplankton composition and abundance from diatoms to flagellates. The dominant phytoplankton genus and abundance was Chaetoceros during the spring bloom and flagellates after the bloom. Phytoplankton production in this fjord is controlled by nitrate. |
format |
Master Thesis |
author |
Adjetey, Eric Teye |
author_facet |
Adjetey, Eric Teye |
author_sort |
Adjetey, Eric Teye |
title |
Nutrients as controlling factors of phytoplankton. Production in the Balsfjord - Northern Norway |
title_short |
Nutrients as controlling factors of phytoplankton. Production in the Balsfjord - Northern Norway |
title_full |
Nutrients as controlling factors of phytoplankton. Production in the Balsfjord - Northern Norway |
title_fullStr |
Nutrients as controlling factors of phytoplankton. Production in the Balsfjord - Northern Norway |
title_full_unstemmed |
Nutrients as controlling factors of phytoplankton. Production in the Balsfjord - Northern Norway |
title_sort |
nutrients as controlling factors of phytoplankton. production in the balsfjord - northern norway |
publisher |
Universitetet i Tromsø |
publishDate |
2009 |
url |
https://hdl.handle.net/10037/9347 |
long_lat |
ENVELOPE(19.227,19.227,69.240,69.240) |
geographic |
Norway Balsfjord |
geographic_facet |
Norway Balsfjord |
genre |
Balsfjord Northern Norway |
genre_facet |
Balsfjord Northern Norway |
op_relation |
https://hdl.handle.net/10037/9347 URN:NBN:no-uit_munin_8905 |
op_rights |
openAccess Copyright 2009 The Author(s) |
_version_ |
1766367980229230592 |