Biodiversity And Systematics Of Subaerial Algae From The Neotropics And Hawaii
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Biodiversity And Systematics Of Subaerial Algae From The Neotropics And Hawaii
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Author : Daryl W. Lam
language : en
Publisher:
Release Date : 2010
Biodiversity And Systematics Of Subaerial Algae From The Neotropics And Hawaii written by Daryl W. Lam and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2010 with Electronic dissertations categories.
Algae are a diverse assemblage of photosynthetic organisms that includes prokaryotes (Cyanobacteria) as well as unicellular and multicellular eukaryotes. They inhabit freshwater, saltwater, and terrestrial ecosystems. Terrestrial algae include microscopic photobionts that thrive (both in abundance and diversity) in humid conditions. Unfortunately, terrestrial algae are an understudied group in the field of biology. This dissertation presents algal systematic research from the neotropical rainforests of Panama (Central America) and Suriname (South America) as well as coastal areas of Oahu, Hawaii (USA). Finally, an overall phylogeny of all green algae is inferred through multigene molecular phylogenetic inference. Biodiversity assessments were based on environmental cloning and sequencing. Systematic biology techniques included morphological observations via light and electron microscopy from specimens isolated through unialgal culture. Systematic assessments were further confirmed through molecular phylogenetic trees reconstructed by Bayesian inference, maximum likelihood, and parsimony methods. Environmental sequencing results suggest that the Surinamese rainforest Raleighvallen is comprised of various green algal (Chlorophyta), nostocalean (Cyanobacteria), and diatom (Heterokontophyta) taxa. Molecular phylogenetic analyses of the green algal order Trentepohliales collected from Panama strongly suggest that the genera Printzina and Trentepohlia do not form separate monophyletic lineages. These results indicate that the morphological characteristics currently used to distinguish these two genera need to be reassessed. The green alga Spongiochyris hawaiiensis is a common epiphyte found on the bark of Casuarina trees in Waimanalo state park on the island of Oahu. Molecular phylogenetic analyses as well as electron microscopy observations of this alga strongly suggest that it belongs to the order Cladophorales. Finally, a multigene phylogeny of green algae from all habitats (marine, freshwater, and terrestrial) was inferred from GenBank and unpublished sequences. Within the division Chlorophyta, the classes Chlorophyceae, Trebouxiophyceae, and Ulvophyceae formed separate monophyletic or natural assemblages. Furthermore, this phylogeny strongly suggests that there were multiple migration events from aquatic environments (from both fresh and marine waters) to land within the Chlorophytan algae.
Biodiversity And Molecular Systematics Of Subaerial Algae From Africa And The Neotropics
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Author : Haj Abdeslam Allali
language : en
Publisher:
Release Date : 2011
Biodiversity And Molecular Systematics Of Subaerial Algae From Africa And The Neotropics written by Haj Abdeslam Allali and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2011 with Electronic dissertations categories.
Algae are a large and diverse group of photosynthetic organisms that range in size from microscopic unicellular to multicellular forms. They usually inhabit marine and freshwater habitats. However, some are terrestrial and are capable of living in soil or above the soil surface (subaerial). Tropical rainforests, with humid climate and diverse habitats, offer phycologists with a rich field for biodiversity exploration. In the past, algae in these environments have been the objective of many studies. However, algae from the African Tropical rainforest have been greatly overlooked. This investigation is targeting the biodiversity of subaerial algae from an African tropical rainforest in Gabon (Africa) as well as a Neotropical forest in Panama (Central America). During this investigation biodiversity studies were based on traditional assessments as well as state of the art technology such as metagenomic approaches. In this study, morphology based and molecular phylogenetic protocols have been integrated to elucidate the biodiversity and systematics of the subaerial green algal order Trentepohliales from Gabon, Africa. Based on morphological observations 14 species of Trentepohlia and Printzina (belonging to the order Trentepohliales) were found to occur in Gabon (six were newly recorded for the continent). Molecular phylogenetics of the Trentepohliales from Africa suggested that the genera Trentepohlia and Printzina are not monophyletic lineages. These results also suggested that a taxonomic reassessment of the Trentepohliales is necessary. The African subaerial algal biodiversity was assessed using a novel metagenomic approach at a broader taxonomic level. Results of this approach suggest that the African rainforest is home to green algal (Chlorophyta), cyanobacteria, and diatoms (Sramenopiles) taxa. Finally, Panamanian subaerial diversity was also evaluated using a metagenomic approach with an ecological application: the biodiversity of the epiphytic flora was compared in four different tree heights as well as the potential effect of the orientation (East versus West). Results of this investigation indicate that the distribution of the algal diversity in terms of major groups was essentially following a similar pattern along the vertical gradient in the forest canopy. In contrast, the distribution of algal groups and specialized taxa was dissimilar between Western and Eastern faces of trees.
A Study On The Diversity Of Subaerial Algae In Southern Georgia
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Author : John D. Griner
language : en
Publisher:
Release Date : 2010
A Study On The Diversity Of Subaerial Algae In Southern Georgia written by John D. Griner and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2010 with Algae categories.
Environmental Setting And The Effects Of Natural And Human Related Factors On Water Quality And Aquatic Biota Oahu Hawaii
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Author : Delwyn S. Oki
language : en
Publisher:
Release Date : 2003
Environmental Setting And The Effects Of Natural And Human Related Factors On Water Quality And Aquatic Biota Oahu Hawaii written by Delwyn S. Oki and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2003 with Aquatic ecology categories.
Plants Of Oceanic Islands
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Author : Tod F. Stuessy
language : en
Publisher: Cambridge University Press
Release Date : 2017-10-26
Plants Of Oceanic Islands written by Tod F. Stuessy and has been published by Cambridge University Press this book supported file pdf, txt, epub, kindle and other format this book has been release on 2017-10-26 with History categories.
This book provides a comprehensive view of the origin and evolution of the plants of an entire oceanic archipelago.
Freshwater Algae Of North America
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Author : John D. Wehr
language : en
Publisher: Elsevier
Release Date : 2015-06-05
Freshwater Algae Of North America written by John D. Wehr and has been published by Elsevier this book supported file pdf, txt, epub, kindle and other format this book has been release on 2015-06-05 with Science categories.
Freshwater Algae of North America: Ecology and Classification, Second Edition is an authoritative and practical treatise on the classification, biodiversity, and ecology of all known genera of freshwater algae from North America. The book provides essential taxonomic and ecological information about one of the most diverse and ubiquitous groups of organisms on earth. This single volume brings together experts on all the groups of algae that occur in fresh waters (also soils, snow, and extreme inland environments). In the decade since the first edition, there has been an explosion of new information on the classification, ecology, and biogeography of many groups of algae, with the use of molecular techniques and renewed interest in biological diversity. Accordingly, this new edition covers updated classification information of most algal groups and the reassignment of many genera and species, as well as new research on harmful algal blooms. Extensive and complete Describes every genus of freshwater algae known from North America, with an analytical dichotomous key, descriptions of diagnostic features, and at least one image of every genus. Full-color images throughout provide superb visual examples of freshwater algae Updated Environmental Issues and Classifications, including new information on harmful algal blooms (HAB) Fully revised introductory chapters, including new topics on biodiversity, and taste and odor problems Updated to reflect the rapid advances in algal classification and taxonomy due to the widespread use of DNA technologies
Algae And Cyanobacteria In Extreme Environments
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Author : Joseph Seckbach
language : en
Publisher: Springer Science & Business Media
Release Date : 2007-09-25
Algae And Cyanobacteria In Extreme Environments written by Joseph Seckbach and has been published by Springer Science & Business Media this book supported file pdf, txt, epub, kindle and other format this book has been release on 2007-09-25 with Science categories.
This collection of essays is devoted to algae that are unexpectedly found in harsh habitats. The authors explain how these algae thrive in various temperature ranges, extreme pH values, salt solutions, UV radiation, dryness, heavy metals, anaerobic niches, various levels of illumination, and hydrostatic pressure. Not only do the essays provide clues about life on the edges of the Earth, but possibly elsewhere in the universe as well.
Island Biology
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Author : Sherwin John Carlquist
language : en
Publisher:
Release Date : 1974
Island Biology written by Sherwin John Carlquist and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1974 with Nature categories.
Encyclopedia Of Caves And Karst Science
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Author : John Gunn
language : en
Publisher: Routledge
Release Date : 2004-08-02
Encyclopedia Of Caves And Karst Science written by John Gunn and has been published by Routledge this book supported file pdf, txt, epub, kindle and other format this book has been release on 2004-08-02 with Reference categories.
The Encyclopedia of Caves and Karst Science contains 350 alphabetically arranged entries. The topics include cave and karst geoscience, cave archaeology and human use of caves, art in caves, hydrology and groundwater, cave and karst history, and conservation and management. The Encyclopedia is extensively illustrated with photographs, maps, diagrams, and tables, and has thematic content lists and a comprehensive index to facilitate searching and browsing.
Ecology Of Indonesian Papua Part Two
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Author : Andrew J. Marshall
language : en
Publisher: Tuttle Publishing
Release Date : 2012-06-26
Ecology Of Indonesian Papua Part Two written by Andrew J. Marshall and has been published by Tuttle Publishing this book supported file pdf, txt, epub, kindle and other format this book has been release on 2012-06-26 with Nature categories.
The Ecology of Papua provides a comprehensive review of current scientific knowledge on all aspects of the natural history of western (Indonesian) New Guinea. Designed for students of conservation, environmental workers, and academic researchers, it is a richly detailed text, dense with biogeographical data, historical reference, and fresh insight on this complicated and marvelous region. We hope it will serve to raise awareness of Papua on a global as well as local scale, and to catalyze effective conservation of its most precious natural assets. New Guinea is the largest and highest tropical island, and one of the last great wilderness areas remaining on Earth. Papua, the western half of New Guinea, is noteworthy for its equatorial glaciers, its vast forested floodplains, its imposing central mountain range, its Raja Ampat Archipelago, and its several hundred traditional forest-dwelling societies. One of the wildest places left in the world, Papua possesses extraordinary biological and cultural diversity. Today, Papua’s environment is under threat from growing outside pressures to exploit its expansive forests and to develop large plantations of oil palm and biofuels. It is important that Papua’s leadership balance economic development with good resource management, to ensure the long-term well-being of its culturally diverse populace.