Author: Elizabeth Clare Ruck
Publisher:
ISBN:
Category : Diatoms
Languages : en
Pages : 676
Book Description
Preliminary Phylogeny of the Family Surirellaceae (Bacillariophyta)
Author: Elizabeth C. Ruck
Publisher:
ISBN:
Category : Bacillariaceae
Languages : en
Pages : 248
Book Description
Publisher:
ISBN:
Category : Bacillariaceae
Languages : en
Pages : 248
Book Description
Preliminary Phylogeny of the Family Surirellaceae (Bacillariophyta)
Author: Elizabeth Clare Ruck
Publisher:
ISBN:
Category : Diatoms
Languages : en
Pages : 676
Book Description
Publisher:
ISBN:
Category : Diatoms
Languages : en
Pages : 676
Book Description
Reconstructing the Tree of Life
Author: Trevor R. Hodkinson
Publisher: CRC Press
ISBN: 1420009532
Category : Mathematics
Languages : en
Pages : 374
Book Description
To document the world's diversity of species and reconstruct the tree of life we need to undertake some simple but mountainous tasks. Most importantly, we need to tackle species rich groups. We need to collect, name, and classify them, and then position them on the tree of life. We need to do this systematically across all groups of organisms and b
Publisher: CRC Press
ISBN: 1420009532
Category : Mathematics
Languages : en
Pages : 374
Book Description
To document the world's diversity of species and reconstruct the tree of life we need to undertake some simple but mountainous tasks. Most importantly, we need to tackle species rich groups. We need to collect, name, and classify them, and then position them on the tree of life. We need to do this systematically across all groups of organisms and b
Phylogenetic Systematics of the Canal Raphe Bearing Orders Surirellales and Rhopalodiales (Bacillariophyta)
Author: Elizabeth Clare Ruck
Publisher:
ISBN:
Category :
Languages : en
Pages : 1642
Book Description
The class Bacillariophyceae, encompasses all diatoms that possess a raphe. Members of the orders Bacillariales, Rhopalodiales and Surirellales have a canal raphe system. Historically, the possession of this character was considered support for a close evolutionary relationship. To investigate phylogenetic relationships, a three gene dataset was constructed for 49 strains representing 9 of the 11 orders within the Bacillariophyceae. We provide the first formal tests of homology of the canal raphe system and the first demonstration that the Rhopalodiales are nested within the Surirellales. Results strongly reject the monophyly of Bacillariales, Rhopalodiales, and Surirellales thereby discounting the canal raphe as a homologous character. The Surirellales include three families: Surirellaceae, Entomoneideaceae, and Auriculaceae, while Rhopalodiales has only three genera in one family, the Rhopalodiaceae. In order to test familial and generic concepts, I expanded taxon representation and collected DNA sequence data for 125 strains. Taken together, only 5 of the 12 genera (Entomoneis, Stenopterobia, Cymatopleura, Petrodictyon and Epithemia) were found to be monophyletic. Our current concepts of the two most species-rich genera, Surirella and Campylodiscus, are too broad as the analyses resolved taxa from these two genera into multiple independent lineages. The "Robustoid" lineage, comprised of Surirella Robustae, Campylodiscus Robusti, and Stenopterobia, exhibits a high degree of endemism within ancient Lake Ohrid, with 17 species considered endemic or relict taxa. A dataset of three molecular markers and 71 Robustoid taxa from Lake Ohrid, Europe, and North America was used to construct a preliminary phylogeny. The aim was to investigate phylogenetic relationships and test hypotheses of speciation and morphological evolution. The recovered paraphyly of Lake Ohrid taxa eliminates the possibility that the Ohrid Robustoids as a whole are a product of intralacustrine speciation. However, sister relationships between putative Ohrid endemics and unexplored morphological diversity within some species complexes (e.g. Campylodiscus marginatus, Scoliodiscus spp.) leave open the possibility that these lineages may be the result of intralacustrine speciation.
Publisher:
ISBN:
Category :
Languages : en
Pages : 1642
Book Description
The class Bacillariophyceae, encompasses all diatoms that possess a raphe. Members of the orders Bacillariales, Rhopalodiales and Surirellales have a canal raphe system. Historically, the possession of this character was considered support for a close evolutionary relationship. To investigate phylogenetic relationships, a three gene dataset was constructed for 49 strains representing 9 of the 11 orders within the Bacillariophyceae. We provide the first formal tests of homology of the canal raphe system and the first demonstration that the Rhopalodiales are nested within the Surirellales. Results strongly reject the monophyly of Bacillariales, Rhopalodiales, and Surirellales thereby discounting the canal raphe as a homologous character. The Surirellales include three families: Surirellaceae, Entomoneideaceae, and Auriculaceae, while Rhopalodiales has only three genera in one family, the Rhopalodiaceae. In order to test familial and generic concepts, I expanded taxon representation and collected DNA sequence data for 125 strains. Taken together, only 5 of the 12 genera (Entomoneis, Stenopterobia, Cymatopleura, Petrodictyon and Epithemia) were found to be monophyletic. Our current concepts of the two most species-rich genera, Surirella and Campylodiscus, are too broad as the analyses resolved taxa from these two genera into multiple independent lineages. The "Robustoid" lineage, comprised of Surirella Robustae, Campylodiscus Robusti, and Stenopterobia, exhibits a high degree of endemism within ancient Lake Ohrid, with 17 species considered endemic or relict taxa. A dataset of three molecular markers and 71 Robustoid taxa from Lake Ohrid, Europe, and North America was used to construct a preliminary phylogeny. The aim was to investigate phylogenetic relationships and test hypotheses of speciation and morphological evolution. The recovered paraphyly of Lake Ohrid taxa eliminates the possibility that the Ohrid Robustoids as a whole are a product of intralacustrine speciation. However, sister relationships between putative Ohrid endemics and unexplored morphological diversity within some species complexes (e.g. Campylodiscus marginatus, Scoliodiscus spp.) leave open the possibility that these lineages may be the result of intralacustrine speciation.
The Diatom World
Author: Joseph Seckbach
Publisher: Springer Science & Business Media
ISBN: 9400713274
Category : Science
Languages : en
Pages : 521
Book Description
Diatom biology, genomics and ecology are becoming more relevant to the human species. While there have been recent compilations of some of the applied aspects of diatoms, and the dizzying pace of taxonomic revisions, this new volume bring us up to date on their classification, biology and ecology, as well as covering the topics of genomics and applied uses. In this collection, some of the leaders in diatom research present either new information or summarize recent research efforts on a wide range of topics, including the tree of life of diatoms, their classifications, the wide habitats and ecological spectra the group exploits, as well as the beauty of their form. This volume celebrates the diversity, emerging areas of research and fascinating ecology of the diatoms bringing this group of world-renown and emerging research leaders together. 'The Diatom World' will foster greater appreciation and research contributions on this incredibly diverse and fascinating group of organisms.
Publisher: Springer Science & Business Media
ISBN: 9400713274
Category : Science
Languages : en
Pages : 521
Book Description
Diatom biology, genomics and ecology are becoming more relevant to the human species. While there have been recent compilations of some of the applied aspects of diatoms, and the dizzying pace of taxonomic revisions, this new volume bring us up to date on their classification, biology and ecology, as well as covering the topics of genomics and applied uses. In this collection, some of the leaders in diatom research present either new information or summarize recent research efforts on a wide range of topics, including the tree of life of diatoms, their classifications, the wide habitats and ecological spectra the group exploits, as well as the beauty of their form. This volume celebrates the diversity, emerging areas of research and fascinating ecology of the diatoms bringing this group of world-renown and emerging research leaders together. 'The Diatom World' will foster greater appreciation and research contributions on this incredibly diverse and fascinating group of organisms.
Unravelling the algae
Author: Juliet Brodie
Publisher: CRC Press
ISBN: 0849379903
Category : Science
Languages : en
Pages : 414
Book Description
Acting as titans in global control of the biosphere and colonizing virtually all corners of the earth, algae, extremely diverse and numerous oxygenic, photosynthetic organisms, can be major players in and drivers of environmental change. For hundreds of years, since their evolutionary origins by endosymbiosis, when a protozoan enslaved a cyanobacte
Publisher: CRC Press
ISBN: 0849379903
Category : Science
Languages : en
Pages : 414
Book Description
Acting as titans in global control of the biosphere and colonizing virtually all corners of the earth, algae, extremely diverse and numerous oxygenic, photosynthetic organisms, can be major players in and drivers of environmental change. For hundreds of years, since their evolutionary origins by endosymbiosis, when a protozoan enslaved a cyanobacte
Canadian Journal of Botany
Author:
Publisher:
ISBN:
Category : Botany
Languages : en
Pages : 718
Book Description
Publisher:
ISBN:
Category : Botany
Languages : en
Pages : 718
Book Description
River Algae
Author: Orlando Necchi JR
Publisher: Springer
ISBN: 3319319841
Category : Technology & Engineering
Languages : en
Pages : 287
Book Description
The content is focused on benthic communities showing how they play an in important role in the river ecosystems. Provides also information on taxonomy of river-inhabiting algal groups, including phylogeny, distribution, collection, preservation and description of the most representative genera of algae in river benthic algal communities. The book also approaches the ecology of river algae not to mention the ecological factors influencing abundance, distribution and diversity of river benthic algal communities and their use as bio-indicators, providing an up-to-date information on taxonomy, ecology, methodology and uses, and a great source of research to everyone interested in freshwater algae, limnology, water quality assessment and biodiversity in river ecosystems.
Publisher: Springer
ISBN: 3319319841
Category : Technology & Engineering
Languages : en
Pages : 287
Book Description
The content is focused on benthic communities showing how they play an in important role in the river ecosystems. Provides also information on taxonomy of river-inhabiting algal groups, including phylogeny, distribution, collection, preservation and description of the most representative genera of algae in river benthic algal communities. The book also approaches the ecology of river algae not to mention the ecological factors influencing abundance, distribution and diversity of river benthic algal communities and their use as bio-indicators, providing an up-to-date information on taxonomy, ecology, methodology and uses, and a great source of research to everyone interested in freshwater algae, limnology, water quality assessment and biodiversity in river ecosystems.
Archiv Für Hydrobiologie
Author:
Publisher:
ISBN:
Category : Freshwater biology
Languages : en
Pages : 612
Book Description
Publisher:
ISBN:
Category : Freshwater biology
Languages : en
Pages : 612
Book Description
Acta Botanica Hungarica
Author:
Publisher:
ISBN:
Category : Botany
Languages : en
Pages : 476
Book Description
Publisher:
ISBN:
Category : Botany
Languages : en
Pages : 476
Book Description