Seasonal Distribution of Phytoplankton in Yellowknife Bay, Great Slave Lake
Abstract The factors influencing the seasonal distribution of phytoplankton were determined between July 1975 and December 1977 in Yellowknife Bay, Great Slave Lake. The initiation of the spring bloom occurred during April of each year in response to changing light conditions and despite the 0 °C wa...
Published in: | Internationale Revue der gesamten Hydrobiologie und Hydrographie |
---|---|
Main Author: | |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
Wiley
1980
|
Subjects: | |
Online Access: | http://dx.doi.org/10.1002/iroh.19800650214 https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1002%2Firoh.19800650214 https://onlinelibrary.wiley.com/doi/pdf/10.1002/iroh.19800650214 |
id |
crwiley:10.1002/iroh.19800650214 |
---|---|
record_format |
openpolar |
spelling |
crwiley:10.1002/iroh.19800650214 2024-06-02T08:07:10+00:00 Seasonal Distribution of Phytoplankton in Yellowknife Bay, Great Slave Lake Moore, James W. 1980 http://dx.doi.org/10.1002/iroh.19800650214 https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1002%2Firoh.19800650214 https://onlinelibrary.wiley.com/doi/pdf/10.1002/iroh.19800650214 en eng Wiley http://onlinelibrary.wiley.com/termsAndConditions#vor Internationale Revue der gesamten Hydrobiologie und Hydrographie volume 65, issue 2, page 283-293 ISSN 0020-9309 journal-article 1980 crwiley https://doi.org/10.1002/iroh.19800650214 2024-05-03T11:37:56Z Abstract The factors influencing the seasonal distribution of phytoplankton were determined between July 1975 and December 1977 in Yellowknife Bay, Great Slave Lake. The initiation of the spring bloom occurred during April of each year in response to changing light conditions and despite the 0 °C water temperatures. Although the plankton showed some fluctuations in density (100–400 mg/m 3 ) during the summer, there was no vernal decrease in the size of the populations. The end of the growing season was characterized by a sharp drop in numbers near the end of October. Multiple regression analysis indicated that changes in the standing crop of the plankton during the summer were primarily related to temperature (r = 0.60) and the concentrations of NO 3 –N (r=–0.74) and SiO 2 (r=–0.82). Changing light conditions probably had little effect on the population during the growing season. Chlamydomonas lapponica was dominant during April of each year. While the growth of this species caused a reduction in the concentrations of total phosphorus and NO 3 –N, the level of SiO 2 remained constant and consequently diatoms ( Asterionella formosa, Stephanodiscus astraea, Diatoma tenue var. elongatum and Melosira islandica ) waxed rapidly during May. By the first of June, nutrient concentrations were low, thereby permitting the development of Dinobryon bavaricum and Dinobryon cylindricum. The extremely rapid decrease in the densities of common species during the fall was probably due to the rapid decline in temperature and light levels and the formation of ice on the bay. Article in Journal/Newspaper Great Slave Lake Yellowknife Wiley Online Library Great Slave Lake ENVELOPE(-114.001,-114.001,61.500,61.500) Yellowknife Yellowknife Bay ENVELOPE(-114.336,-114.336,62.367,62.367) Internationale Revue der gesamten Hydrobiologie und Hydrographie 65 2 283 293 |
institution |
Open Polar |
collection |
Wiley Online Library |
op_collection_id |
crwiley |
language |
English |
description |
Abstract The factors influencing the seasonal distribution of phytoplankton were determined between July 1975 and December 1977 in Yellowknife Bay, Great Slave Lake. The initiation of the spring bloom occurred during April of each year in response to changing light conditions and despite the 0 °C water temperatures. Although the plankton showed some fluctuations in density (100–400 mg/m 3 ) during the summer, there was no vernal decrease in the size of the populations. The end of the growing season was characterized by a sharp drop in numbers near the end of October. Multiple regression analysis indicated that changes in the standing crop of the plankton during the summer were primarily related to temperature (r = 0.60) and the concentrations of NO 3 –N (r=–0.74) and SiO 2 (r=–0.82). Changing light conditions probably had little effect on the population during the growing season. Chlamydomonas lapponica was dominant during April of each year. While the growth of this species caused a reduction in the concentrations of total phosphorus and NO 3 –N, the level of SiO 2 remained constant and consequently diatoms ( Asterionella formosa, Stephanodiscus astraea, Diatoma tenue var. elongatum and Melosira islandica ) waxed rapidly during May. By the first of June, nutrient concentrations were low, thereby permitting the development of Dinobryon bavaricum and Dinobryon cylindricum. The extremely rapid decrease in the densities of common species during the fall was probably due to the rapid decline in temperature and light levels and the formation of ice on the bay. |
format |
Article in Journal/Newspaper |
author |
Moore, James W. |
spellingShingle |
Moore, James W. Seasonal Distribution of Phytoplankton in Yellowknife Bay, Great Slave Lake |
author_facet |
Moore, James W. |
author_sort |
Moore, James W. |
title |
Seasonal Distribution of Phytoplankton in Yellowknife Bay, Great Slave Lake |
title_short |
Seasonal Distribution of Phytoplankton in Yellowknife Bay, Great Slave Lake |
title_full |
Seasonal Distribution of Phytoplankton in Yellowknife Bay, Great Slave Lake |
title_fullStr |
Seasonal Distribution of Phytoplankton in Yellowknife Bay, Great Slave Lake |
title_full_unstemmed |
Seasonal Distribution of Phytoplankton in Yellowknife Bay, Great Slave Lake |
title_sort |
seasonal distribution of phytoplankton in yellowknife bay, great slave lake |
publisher |
Wiley |
publishDate |
1980 |
url |
http://dx.doi.org/10.1002/iroh.19800650214 https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1002%2Firoh.19800650214 https://onlinelibrary.wiley.com/doi/pdf/10.1002/iroh.19800650214 |
long_lat |
ENVELOPE(-114.001,-114.001,61.500,61.500) ENVELOPE(-114.336,-114.336,62.367,62.367) |
geographic |
Great Slave Lake Yellowknife Yellowknife Bay |
geographic_facet |
Great Slave Lake Yellowknife Yellowknife Bay |
genre |
Great Slave Lake Yellowknife |
genre_facet |
Great Slave Lake Yellowknife |
op_source |
Internationale Revue der gesamten Hydrobiologie und Hydrographie volume 65, issue 2, page 283-293 ISSN 0020-9309 |
op_rights |
http://onlinelibrary.wiley.com/termsAndConditions#vor |
op_doi |
https://doi.org/10.1002/iroh.19800650214 |
container_title |
Internationale Revue der gesamten Hydrobiologie und Hydrographie |
container_volume |
65 |
container_issue |
2 |
container_start_page |
283 |
op_container_end_page |
293 |
_version_ |
1800752176279060480 |