The Vertical Distribution of Marine Macroplankton. XII. Some Observations on the Vertical Distribution of Calanus finmarchicus in Relation to Light Intensity.

1. Observations are given on the vertical distribution of adult Calanus finmarchicus in the daytime off Plymouth in July and August, 1931, as a result of collections made simultaneously with the photo-electric measurement of submarine illumination. 2. A series of nets, usually six, was towed simulta...

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Published in:Journal of the Marine Biological Association of the United Kingdom
Main Author: Russell, F. S.
Format: Article in Journal/Newspaper
Language:English
Published: Cambridge University Press (CUP) 1934
Subjects:
Online Access:http://dx.doi.org/10.1017/s0025315400046646
https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0025315400046646
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spelling crcambridgeupr:10.1017/s0025315400046646 2024-03-03T08:43:23+00:00 The Vertical Distribution of Marine Macroplankton. XII. Some Observations on the Vertical Distribution of Calanus finmarchicus in Relation to Light Intensity. Russell, F. S. 1934 http://dx.doi.org/10.1017/s0025315400046646 https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0025315400046646 en eng Cambridge University Press (CUP) https://www.cambridge.org/core/terms Journal of the Marine Biological Association of the United Kingdom volume 19, issue 2, page 569-584 ISSN 0025-3154 1469-7769 Aquatic Science journal-article 1934 crcambridgeupr https://doi.org/10.1017/s0025315400046646 2024-02-08T08:39:10Z 1. Observations are given on the vertical distribution of adult Calanus finmarchicus in the daytime off Plymouth in July and August, 1931, as a result of collections made simultaneously with the photo-electric measurement of submarine illumination. 2. A series of nets, usually six, was towed simultaneously in such a manner that the depth of each net was known approximately. 3. The female Calanus in July preferred higher intensities of light than did the females in August; this change was coincident with a change in the Calanus population as shown by size measurements. A similar change in distribution and in population was shown by the males. 4. The females in July were living in intensities of 20,000 m.c. and more; but those in August were avoiding such high intensities. The males in July avoided intensities of 40,000 m.c. and over, while in August their upper limit was about 10,000 m.c. Article in Journal/Newspaper Calanus finmarchicus Cambridge University Press Journal of the Marine Biological Association of the United Kingdom 19 2 569 584
institution Open Polar
collection Cambridge University Press
op_collection_id crcambridgeupr
language English
topic Aquatic Science
spellingShingle Aquatic Science
Russell, F. S.
The Vertical Distribution of Marine Macroplankton. XII. Some Observations on the Vertical Distribution of Calanus finmarchicus in Relation to Light Intensity.
topic_facet Aquatic Science
description 1. Observations are given on the vertical distribution of adult Calanus finmarchicus in the daytime off Plymouth in July and August, 1931, as a result of collections made simultaneously with the photo-electric measurement of submarine illumination. 2. A series of nets, usually six, was towed simultaneously in such a manner that the depth of each net was known approximately. 3. The female Calanus in July preferred higher intensities of light than did the females in August; this change was coincident with a change in the Calanus population as shown by size measurements. A similar change in distribution and in population was shown by the males. 4. The females in July were living in intensities of 20,000 m.c. and more; but those in August were avoiding such high intensities. The males in July avoided intensities of 40,000 m.c. and over, while in August their upper limit was about 10,000 m.c.
format Article in Journal/Newspaper
author Russell, F. S.
author_facet Russell, F. S.
author_sort Russell, F. S.
title The Vertical Distribution of Marine Macroplankton. XII. Some Observations on the Vertical Distribution of Calanus finmarchicus in Relation to Light Intensity.
title_short The Vertical Distribution of Marine Macroplankton. XII. Some Observations on the Vertical Distribution of Calanus finmarchicus in Relation to Light Intensity.
title_full The Vertical Distribution of Marine Macroplankton. XII. Some Observations on the Vertical Distribution of Calanus finmarchicus in Relation to Light Intensity.
title_fullStr The Vertical Distribution of Marine Macroplankton. XII. Some Observations on the Vertical Distribution of Calanus finmarchicus in Relation to Light Intensity.
title_full_unstemmed The Vertical Distribution of Marine Macroplankton. XII. Some Observations on the Vertical Distribution of Calanus finmarchicus in Relation to Light Intensity.
title_sort vertical distribution of marine macroplankton. xii. some observations on the vertical distribution of calanus finmarchicus in relation to light intensity.
publisher Cambridge University Press (CUP)
publishDate 1934
url http://dx.doi.org/10.1017/s0025315400046646
https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0025315400046646
genre Calanus finmarchicus
genre_facet Calanus finmarchicus
op_source Journal of the Marine Biological Association of the United Kingdom
volume 19, issue 2, page 569-584
ISSN 0025-3154 1469-7769
op_rights https://www.cambridge.org/core/terms
op_doi https://doi.org/10.1017/s0025315400046646
container_title Journal of the Marine Biological Association of the United Kingdom
container_volume 19
container_issue 2
container_start_page 569
op_container_end_page 584
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