The Experts below are selected from a list of 435 Experts worldwide ranked by ideXlab platform
Christian Boedeker - One of the best experts on this subject based on the ideXlab platform.
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microsatellite design for species delimitation and insights into ploidy for the lake baikal cladophoraceae species flock
Phycologia, 2020Co-Authors: Sergio Diaz Martinez, Christian Boedeker, Giuseppe C ZuccarelloAbstract:Ancient lakes are centres of adaptive radiation and speciation. The Cladophoraceae endemic to ancient Lake Baikal is a morphologically diverse group nested within Rhizoclonium that may represent a ...
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newly discovered molecular and ecological diversity within the widely distributed green algal genus pseudoRhizoclonium cladophorales ulvophyceae
Phycologia, 2019Co-Authors: Alison R. Sherwood, Christian Boedeker, Amy J Havens, Amy L Carlile, Michael D Wilcox, Frederik LeliaertAbstract:The recently described green algal genus PseudoRhizoclonium was erected for Rhizoclonium-like specimens that resolved as a separate clade from Rhizoclonium sensu stricto based on nuclear ribosomal ...
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the endemic cladophorales ulvophyceae of ancient lake baikal represent a monophyletic group of very closely related but morphologically diverse species
Journal of Phycology, 2018Co-Authors: Christian Boedeker, Frederik Leliaert, O A Timoshkin, Vasily S Vishnyakov, Sergio Diazmartinez, Giuseppe C ZuccarelloAbstract:Lake Baikal, the oldest lake in the world, is home to spectacular biodiversity and extraordinary levels of endemism. While many of the animal species flocks from Lake Baikal are famous examples of evolutionary radiations, the lake also includes a wide diversity of endemic algae that are not well investigated with regards to molecular-biological taxonomy and phylogeny. The endemic taxa of the green algal order Cladophorales show a range of divergent morphologies that led to their classification in four genera in two families. We sequenced partial large- and small-subunit rDNA as well as the internal transcribed spacer region of 14 of the 16 described endemic taxa to clarify their phylogenetic relationships. One endemic morphospecies, Cladophora kusnetzowii, was shown to be conspecific with the widespread Aegagropila linnaei. All other endemic morphospecies formed a monophyletic group nested within the genus Rhizoclonium (Cladophoraceae), a very surprising result, in stark contrast to their morphological affinities. The Baikal clade represents a species flock of closely related taxa with very low genetic differentiation. Some of the morphospecies were congruent with lineages recovered in the phylogenies, but due to the low phylogenetic signal in the rDNA sequences the relationships within the Baikal clade were not all well resolved. The Baikal clade appears to represent a recent radiation, based on the low molecular divergence within the group, and it is hypothesized that the large morphological variation results from diversification in sympatry from a common ancestor in Lake Baikal.
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The endemic Cladophorales (Ulvophyceae) of ancient Lake Baikal represent a monophyletic group of very closely related but morphologically diverse species
'Victoria University of Wellington Library', 2018Co-Authors: Christian Boedeker, Frederik Leliaert, O A Timoshkin, Vs Vishnyakov, S Díaz-martínez, Giuseppe ZuccarelloAbstract:© 2018 Phycological Society of America Lake Baikal, the oldest lake in the world, is home to spectacular biodiversity and extraordinary levels of endemism. While many of the animal species flocks from Lake Baikal are famous examples of evolutionary radiations, the lake also includes a wide diversity of endemic algae that are not well investigated with regards to molecular-biological taxonomy and phylogeny. The endemic taxa of the green algal order Cladophorales show a range of divergent morphologies that led to their classification in four genera in two families. We sequenced partial large- and small-subunit rDNA as well as the internal transcribed spacer region of 14 of the 16 described endemic taxa to clarify their phylogenetic relationships. One endemic morphospecies, Cladophora kusnetzowii, was shown to be conspecific with the widespread Aegagropila linnaei. All other endemic morphospecies formed a monophyletic group nested within the genus Rhizoclonium (Cladophoraceae), a very surprising result, in stark contrast to their morphological affinities. The Baikal clade represents a species flock of closely related taxa with very low genetic differentiation. Some of the morphospecies were congruent with lineages recovered in the phylogenies, but due to the low phylogenetic signal in the rDNA sequences the relationships within the Baikal clade were not all well resolved. The Baikal clade appears to represent a recent radiation, based on the low molecular divergence within the group, and it is hypothesized that the large morphological variation results from diversification in sympatry from a common ancestor in Lake Baikal
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molecular phylogeny of the cladophoraceae cladophorales ulvophyceae with the resurrection of acrocladus nageli and willeella borgesen and the description of lurbica gen nov and pseudoRhizoclonium gen nov
Journal of Phycology, 2016Co-Authors: Christian Boedeker, Frederik Leliaert, Giuseppe C ZuccarelloAbstract:The taxonomy of the Cladophoraceae, a large family of filamentous green algae, has been problematic for a long time due to morphological simplicity, parallel evolution, phenotypic plasticity, and unknown distribution ranges. Partial large subunit (LSU) rDNA sequences were generated for 362 isolates, and the analyses of a concatenated dataset consisting of unique LSU and small subunit (SSU) rDNA sequences of 95 specimens greatly clarified the phylogeny of the Cladophoraceae. The phylogenetic reconstructions showed that the three currently accepted genera Chaetomorpha, Cladophora, and Rhizoclonium are polyphyletic. The backbone of the phylogeny is robust and the relationships of the main lineages were inferred with high support, only the phylogenetic position of both Chaetomorpha melagonium and Cladophora rupestris could not be inferred unambiguously. There have been at least three independent switches between branched and unbranched morphologies within the Cladophoraceae. Freshwater environments have been colonized twice independently, namely by the freshwater Cladophora species as well as by several lineages of the Rhizoclonium riparium clade. In an effort to establish monophyletic genera, the genera Acrocladus and Willeella are resurrected and two new genera are described: PseudoRhizoclonium and Lurbica.
Giuseppe C Zuccarello - One of the best experts on this subject based on the ideXlab platform.
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microsatellite design for species delimitation and insights into ploidy for the lake baikal cladophoraceae species flock
Phycologia, 2020Co-Authors: Sergio Diaz Martinez, Christian Boedeker, Giuseppe C ZuccarelloAbstract:Ancient lakes are centres of adaptive radiation and speciation. The Cladophoraceae endemic to ancient Lake Baikal is a morphologically diverse group nested within Rhizoclonium that may represent a ...
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the endemic cladophorales ulvophyceae of ancient lake baikal represent a monophyletic group of very closely related but morphologically diverse species
Journal of Phycology, 2018Co-Authors: Christian Boedeker, Frederik Leliaert, O A Timoshkin, Vasily S Vishnyakov, Sergio Diazmartinez, Giuseppe C ZuccarelloAbstract:Lake Baikal, the oldest lake in the world, is home to spectacular biodiversity and extraordinary levels of endemism. While many of the animal species flocks from Lake Baikal are famous examples of evolutionary radiations, the lake also includes a wide diversity of endemic algae that are not well investigated with regards to molecular-biological taxonomy and phylogeny. The endemic taxa of the green algal order Cladophorales show a range of divergent morphologies that led to their classification in four genera in two families. We sequenced partial large- and small-subunit rDNA as well as the internal transcribed spacer region of 14 of the 16 described endemic taxa to clarify their phylogenetic relationships. One endemic morphospecies, Cladophora kusnetzowii, was shown to be conspecific with the widespread Aegagropila linnaei. All other endemic morphospecies formed a monophyletic group nested within the genus Rhizoclonium (Cladophoraceae), a very surprising result, in stark contrast to their morphological affinities. The Baikal clade represents a species flock of closely related taxa with very low genetic differentiation. Some of the morphospecies were congruent with lineages recovered in the phylogenies, but due to the low phylogenetic signal in the rDNA sequences the relationships within the Baikal clade were not all well resolved. The Baikal clade appears to represent a recent radiation, based on the low molecular divergence within the group, and it is hypothesized that the large morphological variation results from diversification in sympatry from a common ancestor in Lake Baikal.
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molecular phylogeny of the cladophoraceae cladophorales ulvophyceae with the resurrection of acrocladus nageli and willeella borgesen and the description of lurbica gen nov and pseudoRhizoclonium gen nov
Journal of Phycology, 2016Co-Authors: Christian Boedeker, Frederik Leliaert, Giuseppe C ZuccarelloAbstract:The taxonomy of the Cladophoraceae, a large family of filamentous green algae, has been problematic for a long time due to morphological simplicity, parallel evolution, phenotypic plasticity, and unknown distribution ranges. Partial large subunit (LSU) rDNA sequences were generated for 362 isolates, and the analyses of a concatenated dataset consisting of unique LSU and small subunit (SSU) rDNA sequences of 95 specimens greatly clarified the phylogeny of the Cladophoraceae. The phylogenetic reconstructions showed that the three currently accepted genera Chaetomorpha, Cladophora, and Rhizoclonium are polyphyletic. The backbone of the phylogeny is robust and the relationships of the main lineages were inferred with high support, only the phylogenetic position of both Chaetomorpha melagonium and Cladophora rupestris could not be inferred unambiguously. There have been at least three independent switches between branched and unbranched morphologies within the Cladophoraceae. Freshwater environments have been colonized twice independently, namely by the freshwater Cladophora species as well as by several lineages of the Rhizoclonium riparium clade. In an effort to establish monophyletic genera, the genera Acrocladus and Willeella are resurrected and two new genera are described: PseudoRhizoclonium and Lurbica.
Frederik Leliaert - One of the best experts on this subject based on the ideXlab platform.
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newly discovered molecular and ecological diversity within the widely distributed green algal genus pseudoRhizoclonium cladophorales ulvophyceae
Phycologia, 2019Co-Authors: Alison R. Sherwood, Christian Boedeker, Amy J Havens, Amy L Carlile, Michael D Wilcox, Frederik LeliaertAbstract:The recently described green algal genus PseudoRhizoclonium was erected for Rhizoclonium-like specimens that resolved as a separate clade from Rhizoclonium sensu stricto based on nuclear ribosomal ...
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the endemic cladophorales ulvophyceae of ancient lake baikal represent a monophyletic group of very closely related but morphologically diverse species
Journal of Phycology, 2018Co-Authors: Christian Boedeker, Frederik Leliaert, O A Timoshkin, Vasily S Vishnyakov, Sergio Diazmartinez, Giuseppe C ZuccarelloAbstract:Lake Baikal, the oldest lake in the world, is home to spectacular biodiversity and extraordinary levels of endemism. While many of the animal species flocks from Lake Baikal are famous examples of evolutionary radiations, the lake also includes a wide diversity of endemic algae that are not well investigated with regards to molecular-biological taxonomy and phylogeny. The endemic taxa of the green algal order Cladophorales show a range of divergent morphologies that led to their classification in four genera in two families. We sequenced partial large- and small-subunit rDNA as well as the internal transcribed spacer region of 14 of the 16 described endemic taxa to clarify their phylogenetic relationships. One endemic morphospecies, Cladophora kusnetzowii, was shown to be conspecific with the widespread Aegagropila linnaei. All other endemic morphospecies formed a monophyletic group nested within the genus Rhizoclonium (Cladophoraceae), a very surprising result, in stark contrast to their morphological affinities. The Baikal clade represents a species flock of closely related taxa with very low genetic differentiation. Some of the morphospecies were congruent with lineages recovered in the phylogenies, but due to the low phylogenetic signal in the rDNA sequences the relationships within the Baikal clade were not all well resolved. The Baikal clade appears to represent a recent radiation, based on the low molecular divergence within the group, and it is hypothesized that the large morphological variation results from diversification in sympatry from a common ancestor in Lake Baikal.
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The endemic Cladophorales (Ulvophyceae) of ancient Lake Baikal represent a monophyletic group of very closely related but morphologically diverse species
'Victoria University of Wellington Library', 2018Co-Authors: Christian Boedeker, Frederik Leliaert, O A Timoshkin, Vs Vishnyakov, S Díaz-martínez, Giuseppe ZuccarelloAbstract:© 2018 Phycological Society of America Lake Baikal, the oldest lake in the world, is home to spectacular biodiversity and extraordinary levels of endemism. While many of the animal species flocks from Lake Baikal are famous examples of evolutionary radiations, the lake also includes a wide diversity of endemic algae that are not well investigated with regards to molecular-biological taxonomy and phylogeny. The endemic taxa of the green algal order Cladophorales show a range of divergent morphologies that led to their classification in four genera in two families. We sequenced partial large- and small-subunit rDNA as well as the internal transcribed spacer region of 14 of the 16 described endemic taxa to clarify their phylogenetic relationships. One endemic morphospecies, Cladophora kusnetzowii, was shown to be conspecific with the widespread Aegagropila linnaei. All other endemic morphospecies formed a monophyletic group nested within the genus Rhizoclonium (Cladophoraceae), a very surprising result, in stark contrast to their morphological affinities. The Baikal clade represents a species flock of closely related taxa with very low genetic differentiation. Some of the morphospecies were congruent with lineages recovered in the phylogenies, but due to the low phylogenetic signal in the rDNA sequences the relationships within the Baikal clade were not all well resolved. The Baikal clade appears to represent a recent radiation, based on the low molecular divergence within the group, and it is hypothesized that the large morphological variation results from diversification in sympatry from a common ancestor in Lake Baikal
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molecular phylogeny of the cladophoraceae cladophorales ulvophyceae with the resurrection of acrocladus nageli and willeella borgesen and the description of lurbica gen nov and pseudoRhizoclonium gen nov
Journal of Phycology, 2016Co-Authors: Christian Boedeker, Frederik Leliaert, Giuseppe C ZuccarelloAbstract:The taxonomy of the Cladophoraceae, a large family of filamentous green algae, has been problematic for a long time due to morphological simplicity, parallel evolution, phenotypic plasticity, and unknown distribution ranges. Partial large subunit (LSU) rDNA sequences were generated for 362 isolates, and the analyses of a concatenated dataset consisting of unique LSU and small subunit (SSU) rDNA sequences of 95 specimens greatly clarified the phylogeny of the Cladophoraceae. The phylogenetic reconstructions showed that the three currently accepted genera Chaetomorpha, Cladophora, and Rhizoclonium are polyphyletic. The backbone of the phylogeny is robust and the relationships of the main lineages were inferred with high support, only the phylogenetic position of both Chaetomorpha melagonium and Cladophora rupestris could not be inferred unambiguously. There have been at least three independent switches between branched and unbranched morphologies within the Cladophoraceae. Freshwater environments have been colonized twice independently, namely by the freshwater Cladophora species as well as by several lineages of the Rhizoclonium riparium clade. In an effort to establish monophyletic genera, the genera Acrocladus and Willeella are resurrected and two new genera are described: PseudoRhizoclonium and Lurbica.
Emeka G Nwoba - One of the best experts on this subject based on the ideXlab platform.
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macroalgae culture to treat anaerobic digestion piggery effluent adpe
Bioresource Technology, 2017Co-Authors: Emeka G Nwoba, Navid R Moheimani, James C Ogbonna, Ashiwin Vadiveloo, J R Pluske, John M HuismanAbstract:Environmental consequences of high productivity piggeries are significant and can result in negative environmental impacts, hence bioremediation techniques (in particular using macroalgae) are therefore of great interest. Here, the growth potential of several freshwater macroalgae in anaerobic digestion piggery effluent (ADPE), their nutrient removal rates and biochemical composition of the biomass were investigated under outdoor climatic conditions. A consortium of two macroalgae, Rhizoclonium sp. and Ulothrix sp. was isolated and could efficiently grow in the ADPE. Maximum ammonium removal rate (30.6 ± 6.50 mg NH4+-N L−1 d−1) was achieved at ADPE concentration equivalent to 248 mgNH4+-N L−1. Mean biomass productivity of 31.1 ± 1.14 g ash-free dry weight (AFDW) m−2 d−1 was achieved. Total carbohydrate and protein contents ranged between 42.8–54.8 and 43.4–45.0% AFDW, respectively, while total lipid content was very low. The study indicates the potential use of this macroalgal consortium for treating ADPE as well as source of animal feed production.
John M Huisman - One of the best experts on this subject based on the ideXlab platform.
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macroalgae culture to treat anaerobic digestion piggery effluent adpe
Bioresource Technology, 2017Co-Authors: Emeka G Nwoba, Navid R Moheimani, James C Ogbonna, Ashiwin Vadiveloo, J R Pluske, John M HuismanAbstract:Environmental consequences of high productivity piggeries are significant and can result in negative environmental impacts, hence bioremediation techniques (in particular using macroalgae) are therefore of great interest. Here, the growth potential of several freshwater macroalgae in anaerobic digestion piggery effluent (ADPE), their nutrient removal rates and biochemical composition of the biomass were investigated under outdoor climatic conditions. A consortium of two macroalgae, Rhizoclonium sp. and Ulothrix sp. was isolated and could efficiently grow in the ADPE. Maximum ammonium removal rate (30.6 ± 6.50 mg NH4+-N L−1 d−1) was achieved at ADPE concentration equivalent to 248 mgNH4+-N L−1. Mean biomass productivity of 31.1 ± 1.14 g ash-free dry weight (AFDW) m−2 d−1 was achieved. Total carbohydrate and protein contents ranged between 42.8–54.8 and 43.4–45.0% AFDW, respectively, while total lipid content was very low. The study indicates the potential use of this macroalgal consortium for treating ADPE as well as source of animal feed production.
