Cryptic diversity of Ulva (Ulvales, Chlorophyta) in the Northwest Atlantic: Introduced and indigenous distromatic species
Distromatic foliose blades of the algal genus Ulva are notoriously difficult to identify due to their simple morphologies and few diagnostic characteristics that often exhibit intraspecific variation and interspecific overlap. Hence, species differentiation is difficult and diversity estimates are o...
Published in: | European Journal of Phycology |
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Online Access: | https://scholars.unh.edu/jel/225 https://doi.org/10.1080/09670261003746201 |
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ftuninhampshire:oai:scholars.unh.edu:jel-1370 2023-05-15T17:45:29+02:00 Cryptic diversity of Ulva (Ulvales, Chlorophyta) in the Northwest Atlantic: Introduced and indigenous distromatic species Hofmann, Laurie C. Nettleton, Jeremy C. Neefus, Christopher D. Mathieson, Arthur C. 2010-08-10T07:00:00Z https://scholars.unh.edu/jel/225 https://doi.org/10.1080/09670261003746201 unknown University of New Hampshire Scholars' Repository https://scholars.unh.edu/jel/225 https://doi.org/10.1080/09670261003746201 Jackson Estuarine Laboratory cryptic species distromatic Ulva foliose U. compressa introduced U. pertusa ITS Northwest Atlantic salinity text 2010 ftuninhampshire https://doi.org/10.1080/09670261003746201 2023-01-30T21:55:31Z Distromatic foliose blades of the algal genus Ulva are notoriously difficult to identify due to their simple morphologies and few diagnostic characteristics that often exhibit intraspecific variation and interspecific overlap. Hence, species differentiation is difficult and diversity estimates are often inaccurate. Two major goals of this study were to assess the diversity of distromatic Ulva spp. in the Great Bay Estuarine System (GBES) of New Hampshire and Maine, USA, and to compare historical and present day records of these species. Molecular analysis (using ITS sequences) of field-collected specimens revealed four distinct taxa: Ulva lactuca, U. rigida, U. compressa, and U. pertusa. Prior to molecular screening, Ulva lactuca was the only distromatic Ulva species reported for the GBES. Ulva pertusa and the foliose form of U. compressa are newly recorded for the Northwest Atlantic, and the range of U. rigida has been extended. Molecular analysis of historical herbarium voucher specimens indicates that U. rigida, U. pertusa, and the foliose form of U. compressa have been present in the GBES since at least 1966, 1967, and 1972, respectively. The distromatic morphotype of U. compressa is found only in low salinity areas, which suggests that salinity may influence its morphological development. Molecular and morphological evaluations are critical if we are to distinguish between cryptic taxa, accurately assess biodiversity, and effectively monitor the spread of non-indigenous macroalgae. Text Northwest Atlantic University of New Hampshire: Scholars Repository European Journal of Phycology 45 3 230 239 |
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University of New Hampshire: Scholars Repository |
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ftuninhampshire |
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topic |
cryptic species distromatic Ulva foliose U. compressa introduced U. pertusa ITS Northwest Atlantic salinity |
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cryptic species distromatic Ulva foliose U. compressa introduced U. pertusa ITS Northwest Atlantic salinity Hofmann, Laurie C. Nettleton, Jeremy C. Neefus, Christopher D. Mathieson, Arthur C. Cryptic diversity of Ulva (Ulvales, Chlorophyta) in the Northwest Atlantic: Introduced and indigenous distromatic species |
topic_facet |
cryptic species distromatic Ulva foliose U. compressa introduced U. pertusa ITS Northwest Atlantic salinity |
description |
Distromatic foliose blades of the algal genus Ulva are notoriously difficult to identify due to their simple morphologies and few diagnostic characteristics that often exhibit intraspecific variation and interspecific overlap. Hence, species differentiation is difficult and diversity estimates are often inaccurate. Two major goals of this study were to assess the diversity of distromatic Ulva spp. in the Great Bay Estuarine System (GBES) of New Hampshire and Maine, USA, and to compare historical and present day records of these species. Molecular analysis (using ITS sequences) of field-collected specimens revealed four distinct taxa: Ulva lactuca, U. rigida, U. compressa, and U. pertusa. Prior to molecular screening, Ulva lactuca was the only distromatic Ulva species reported for the GBES. Ulva pertusa and the foliose form of U. compressa are newly recorded for the Northwest Atlantic, and the range of U. rigida has been extended. Molecular analysis of historical herbarium voucher specimens indicates that U. rigida, U. pertusa, and the foliose form of U. compressa have been present in the GBES since at least 1966, 1967, and 1972, respectively. The distromatic morphotype of U. compressa is found only in low salinity areas, which suggests that salinity may influence its morphological development. Molecular and morphological evaluations are critical if we are to distinguish between cryptic taxa, accurately assess biodiversity, and effectively monitor the spread of non-indigenous macroalgae. |
format |
Text |
author |
Hofmann, Laurie C. Nettleton, Jeremy C. Neefus, Christopher D. Mathieson, Arthur C. |
author_facet |
Hofmann, Laurie C. Nettleton, Jeremy C. Neefus, Christopher D. Mathieson, Arthur C. |
author_sort |
Hofmann, Laurie C. |
title |
Cryptic diversity of Ulva (Ulvales, Chlorophyta) in the Northwest Atlantic: Introduced and indigenous distromatic species |
title_short |
Cryptic diversity of Ulva (Ulvales, Chlorophyta) in the Northwest Atlantic: Introduced and indigenous distromatic species |
title_full |
Cryptic diversity of Ulva (Ulvales, Chlorophyta) in the Northwest Atlantic: Introduced and indigenous distromatic species |
title_fullStr |
Cryptic diversity of Ulva (Ulvales, Chlorophyta) in the Northwest Atlantic: Introduced and indigenous distromatic species |
title_full_unstemmed |
Cryptic diversity of Ulva (Ulvales, Chlorophyta) in the Northwest Atlantic: Introduced and indigenous distromatic species |
title_sort |
cryptic diversity of ulva (ulvales, chlorophyta) in the northwest atlantic: introduced and indigenous distromatic species |
publisher |
University of New Hampshire Scholars' Repository |
publishDate |
2010 |
url |
https://scholars.unh.edu/jel/225 https://doi.org/10.1080/09670261003746201 |
genre |
Northwest Atlantic |
genre_facet |
Northwest Atlantic |
op_source |
Jackson Estuarine Laboratory |
op_relation |
https://scholars.unh.edu/jel/225 https://doi.org/10.1080/09670261003746201 |
op_doi |
https://doi.org/10.1080/09670261003746201 |
container_title |
European Journal of Phycology |
container_volume |
45 |
container_issue |
3 |
container_start_page |
230 |
op_container_end_page |
239 |
_version_ |
1766148533569716224 |