The Experts below are selected from a list of 285 Experts worldwide ranked by ideXlab platform
Jonathan M. Waters - One of the best experts on this subject based on the ideXlab platform.
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durvillaea poha sp nov fucales Phaeophyceae a buoyant southern bull kelp species endemic to new zealand
Phycologia, 2012Co-Authors: Ceridwen I. Fraser, Hamish G. Spencer, Jonathan M. WatersAbstract:Abstract Fraser C.I., Spencer H.G. and Waters J.M. 2012. Durvillaea poha sp. nov. (Fucales, Phaeophyceae): a buoyant southern bull-kelp species endemic to New Zealand. Phycologia 51: 151–156. DOI: 10.2216/11-47.1 Recent molecular and morphological research has demonstrated that the southern bull-kelp genus Durvillaea includes multiple as-yet-unnamed phylogenetic species. One of these, which has previously been recognised as genetically, morphologically and ecologically distinct (the ‘cape’ lineage of D. antarctica, endemic to the New Zealand region), is here described, and named Durvillaea poha sp. nov. Additional molecular analyses (28S sequence data) support the distinct status of this divergent lineage. No evidence of hybridisation among sympatric D. poha and D. antarctica has been observed.
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Multigene phylogeny of the southern bull-kelp genus Durvillaea (Phaeophyceae: Fucales).
Molecular Phylogenetics and Evolution, 2010Co-Authors: Ceridwen I. Fraser, David J. Winter, Hamish G. Spencer, Jonathan M. WatersAbstract:Abstract Durvillaea (southern bull-kelp) is an economically and ecologically important brown algal genus that dominates many exposed, rocky coasts in the cold-temperate Southern Hemisphere. Of its five currently-recognized species, four are non-buoyant and restricted to the south-western Pacific, whereas one is both buoyant and widely distributed. Durvillaea has had an unsettled taxonomic history. Although its position within the brown algae (Phaeophyceae) has now been largely resolved through the use of molecular techniques, the taxonomic status of several Durvillaea species/morphotypes remains unresolved. Previous molecular phylogenetic studies of phaeophycean taxa have included few Durvillaea samples, and have consequently paid little or no attention to variation within this genus. The current study presents phylogenetic analyses of four genetic markers (mitchondrial: COI; chloroplast: rbcL; and nuclear: 18S and 28S) to resolve phylogenetic relationships within Durvillaea. Results support the monophyly of solid-bladed taxa D. willana, D. potatorum, and D. sp. A (an undescribed species from the Antipodes Islands), whereas the widespread, buoyant D. antarctica is paraphyletic, with solid-bladed D. chathamensis placed sister to a D. antarctica clade from northern NZ but within D. antarctica sensu lato. The phylogenetic and ecological diversity detected within D. antarctica indicate that it is a species complex of five deeply divergent clades. Under a phylogenetic species concept, Durvillaea can be interpreted as a complex of nine distinct evolutionary lineages, only one of which has an intercontinental distribution (‘subantarctic’ D. antarctica).
Lena Kautsky - One of the best experts on this subject based on the ideXlab platform.
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Macroscopic sexual dimorphism in Fucus radicans (Phaeophyceae) with implications for its reproductive ecology
Botanica Marina, 2016Co-Authors: Ellen Schagerström, Lena KautskyAbstract:Sexual dimorphism on a macroscopic scale is unusual within Phaeophyceae. In this paper we report for the first time on macroscopic sexual dimorphism in F. radicans. During field collections it was ...
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GENETIC STRUCTURE IN POPULATIONS OF FUCUS VESICULOSUS (Phaeophyceae) OVER SPATIAL SCALES FROM 10 M TO 800 KM1
Journal of Phycology, 2007Co-Authors: Andrey Tatarenkov, Rita B Jonsson, Lena Kautsky, Kerstin JohannessonAbstract:Gentic structure in populations of Fucus vesiculosus (Phaeophyceae) over spatial scales from 10 m to 800 km
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genetic and morphological identification of fucus radicans sp nov fucales Phaeophyceae in the brackish baltic sea1
Journal of Phycology, 2005Co-Authors: Lena Bergstrom, Andrey Tatarenkov, Kerstin Johannesson, Rita B Jonsson, Lena KautskyAbstract:Genetic and morphological identification of Fucus radicans sp. nov. (Fucales, Phaeophyceae) in the brackish Baltic Sea
Ceridwen I. Fraser - One of the best experts on this subject based on the ideXlab platform.
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durvillaea poha sp nov fucales Phaeophyceae a buoyant southern bull kelp species endemic to new zealand
Phycologia, 2012Co-Authors: Ceridwen I. Fraser, Hamish G. Spencer, Jonathan M. WatersAbstract:Abstract Fraser C.I., Spencer H.G. and Waters J.M. 2012. Durvillaea poha sp. nov. (Fucales, Phaeophyceae): a buoyant southern bull-kelp species endemic to New Zealand. Phycologia 51: 151–156. DOI: 10.2216/11-47.1 Recent molecular and morphological research has demonstrated that the southern bull-kelp genus Durvillaea includes multiple as-yet-unnamed phylogenetic species. One of these, which has previously been recognised as genetically, morphologically and ecologically distinct (the ‘cape’ lineage of D. antarctica, endemic to the New Zealand region), is here described, and named Durvillaea poha sp. nov. Additional molecular analyses (28S sequence data) support the distinct status of this divergent lineage. No evidence of hybridisation among sympatric D. poha and D. antarctica has been observed.
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Multigene phylogeny of the southern bull-kelp genus Durvillaea (Phaeophyceae: Fucales).
Molecular Phylogenetics and Evolution, 2010Co-Authors: Ceridwen I. Fraser, David J. Winter, Hamish G. Spencer, Jonathan M. WatersAbstract:Abstract Durvillaea (southern bull-kelp) is an economically and ecologically important brown algal genus that dominates many exposed, rocky coasts in the cold-temperate Southern Hemisphere. Of its five currently-recognized species, four are non-buoyant and restricted to the south-western Pacific, whereas one is both buoyant and widely distributed. Durvillaea has had an unsettled taxonomic history. Although its position within the brown algae (Phaeophyceae) has now been largely resolved through the use of molecular techniques, the taxonomic status of several Durvillaea species/morphotypes remains unresolved. Previous molecular phylogenetic studies of phaeophycean taxa have included few Durvillaea samples, and have consequently paid little or no attention to variation within this genus. The current study presents phylogenetic analyses of four genetic markers (mitchondrial: COI; chloroplast: rbcL; and nuclear: 18S and 28S) to resolve phylogenetic relationships within Durvillaea. Results support the monophyly of solid-bladed taxa D. willana, D. potatorum, and D. sp. A (an undescribed species from the Antipodes Islands), whereas the widespread, buoyant D. antarctica is paraphyletic, with solid-bladed D. chathamensis placed sister to a D. antarctica clade from northern NZ but within D. antarctica sensu lato. The phylogenetic and ecological diversity detected within D. antarctica indicate that it is a species complex of five deeply divergent clades. Under a phylogenetic species concept, Durvillaea can be interpreted as a complex of nine distinct evolutionary lineages, only one of which has an intercontinental distribution (‘subantarctic’ D. antarctica).
Francesco Cinelli - One of the best experts on this subject based on the ideXlab platform.
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benthic marine flora in the tuscan archipelago a second contribution isle of gorgona
Plant Biosystems, 1993Co-Authors: Giorgio Pardi, Ilaria Papi, Luigi Piazzi, Francesco CinelliAbstract:Abstract The benthic marine flora from the Isle of Gorgona has been studied. This paper is a compendium of new and already published data, in which 173 taxa of algae are listed: 3 Bangiophyceae, 116 Florideophyceae, 27 Phaeophyceae, 2 Chlorophyceae and 25 Bryopsidophyceae.
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benthic marine flora in the tuscan archipelago a first contribution isles of capraia elba formiche di grosseto giglio scoglio d africa montecristo and giannutri
Plant Biosystems, 1992Co-Authors: Ilaria Papi, Silvia Lenzini, Lisandro Benedetti Cecchi, Giorgio Pardi, Francesco CinelliAbstract:Abstract Benthic marine flora of Tuscan Archipelago has been studied. Several samples were collected along five islands and some rocks. This paper is a compendium of new and already published data, in which 267 species, varieties, forms and stadia of algae and seagrasses are listed: 5 Bangiophyceae, 182 Florideophyceae, 45 Phaeophyceae, 6 Chlorophyceae, 28 Bryopsidophyceae, 1 Angiospermae.
Maria Luz Piriz - One of the best experts on this subject based on the ideXlab platform.
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the invasive kelp undaria pinnatifida Phaeophyceae laminariales reduces native seaweed diversity in nuevo gulf patagonia argentina
Biological Invasions, 2004Co-Authors: Graciela N Casas, Ricardo A Scrosati, Maria Luz PirizAbstract:The kelp Undaria pinnatifida(Phaeophyceae) is a seaweed native to northeast Asia, but during the last two decades, it has been accidentally or intentionally introduced in several temperate coasts worldwide. In central Patagonia (Argentina), this species was first detected in late 1992, and it is progressively spreading from the point of introduction. Through a manipulative experiment involving Undaria removal in 2001, we found that its presence is associated with a dramatic decrease in species richness and diversity of native seaweeds in Nuevo Gulf. Future prospects are worrisome, as, in addition to the negative impact from a biodiversity viewpoint, native commercial macroalgae and invertebrates might also be affected.
