Studies on marine algae of Newfoundland. I. Occurrence and distribution of free-living Ascophyllum nodosum in Newfoundland
The free-living "beach form" of Ascophyllum nodosum (L.) Le Jol. ecad mackaii (Turn.) Cotton is described for the first time from 10 of a total of 60 Newfoundland localities investigated. Development and form of the free-living plants are similar to descriptions of British populations of t...
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1970
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crcansciencepubl:10.1139/b70-253 2023-12-17T10:38:37+01:00 Studies on marine algae of Newfoundland. I. Occurrence and distribution of free-living Ascophyllum nodosum in Newfoundland South, G. R. Hill, R. D. 1970 http://dx.doi.org/10.1139/b70-253 http://www.nrcresearchpress.com/doi/pdf/10.1139/b70-253 en eng Canadian Science Publishing http://www.nrcresearchpress.com/page/about/CorporateTextAndDataMining Canadian Journal of Botany volume 48, issue 10, page 1697-1701 ISSN 0008-4026 Plant Science journal-article 1970 crcansciencepubl https://doi.org/10.1139/b70-253 2023-11-19T13:39:05Z The free-living "beach form" of Ascophyllum nodosum (L.) Le Jol. ecad mackaii (Turn.) Cotton is described for the first time from 10 of a total of 60 Newfoundland localities investigated. Development and form of the free-living plants are similar to descriptions of British populations of the same entity, and the same ecological conditions appear to cause their development in both areas. Plants arise from fragments of attached plants and have flattened or terete branches which are markedly dichotomous in the advanced stages. In extreme forms a terete, highly dichotomous, and disoriented branching habit is adopted, resulting in globular thalli. Plants generally lack air-bladders and are seldom fertile in intermediate and advanced forms of the ecad. Populations occur in the mid intertidal zone in areas of extreme shelter near a freshwater source, and on muddy or sandy/mud substrates. Parasitic Polysiphonia lanosa (L.) Tandy is absent from ecad mackaii in Newfoundland. Article in Journal/Newspaper Newfoundland Canadian Science Publishing (via Crossref) Canadian Journal of Botany 48 10 1697 1701 |
institution |
Open Polar |
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Canadian Science Publishing (via Crossref) |
op_collection_id |
crcansciencepubl |
language |
English |
topic |
Plant Science |
spellingShingle |
Plant Science South, G. R. Hill, R. D. Studies on marine algae of Newfoundland. I. Occurrence and distribution of free-living Ascophyllum nodosum in Newfoundland |
topic_facet |
Plant Science |
description |
The free-living "beach form" of Ascophyllum nodosum (L.) Le Jol. ecad mackaii (Turn.) Cotton is described for the first time from 10 of a total of 60 Newfoundland localities investigated. Development and form of the free-living plants are similar to descriptions of British populations of the same entity, and the same ecological conditions appear to cause their development in both areas. Plants arise from fragments of attached plants and have flattened or terete branches which are markedly dichotomous in the advanced stages. In extreme forms a terete, highly dichotomous, and disoriented branching habit is adopted, resulting in globular thalli. Plants generally lack air-bladders and are seldom fertile in intermediate and advanced forms of the ecad. Populations occur in the mid intertidal zone in areas of extreme shelter near a freshwater source, and on muddy or sandy/mud substrates. Parasitic Polysiphonia lanosa (L.) Tandy is absent from ecad mackaii in Newfoundland. |
format |
Article in Journal/Newspaper |
author |
South, G. R. Hill, R. D. |
author_facet |
South, G. R. Hill, R. D. |
author_sort |
South, G. R. |
title |
Studies on marine algae of Newfoundland. I. Occurrence and distribution of free-living Ascophyllum nodosum in Newfoundland |
title_short |
Studies on marine algae of Newfoundland. I. Occurrence and distribution of free-living Ascophyllum nodosum in Newfoundland |
title_full |
Studies on marine algae of Newfoundland. I. Occurrence and distribution of free-living Ascophyllum nodosum in Newfoundland |
title_fullStr |
Studies on marine algae of Newfoundland. I. Occurrence and distribution of free-living Ascophyllum nodosum in Newfoundland |
title_full_unstemmed |
Studies on marine algae of Newfoundland. I. Occurrence and distribution of free-living Ascophyllum nodosum in Newfoundland |
title_sort |
studies on marine algae of newfoundland. i. occurrence and distribution of free-living ascophyllum nodosum in newfoundland |
publisher |
Canadian Science Publishing |
publishDate |
1970 |
url |
http://dx.doi.org/10.1139/b70-253 http://www.nrcresearchpress.com/doi/pdf/10.1139/b70-253 |
genre |
Newfoundland |
genre_facet |
Newfoundland |
op_source |
Canadian Journal of Botany volume 48, issue 10, page 1697-1701 ISSN 0008-4026 |
op_rights |
http://www.nrcresearchpress.com/page/about/CorporateTextAndDataMining |
op_doi |
https://doi.org/10.1139/b70-253 |
container_title |
Canadian Journal of Botany |
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48 |
container_issue |
10 |
container_start_page |
1697 |
op_container_end_page |
1701 |
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1785540101863899136 |