21 research outputs found
The Hawaiian Algal Database: a laboratory LIMS and online resource for biodiversity data
<p>Abstract</p> <p>Background</p> <p>Organization and presentation of biodiversity data is greatly facilitated by databases that are specially designed to allow easy data entry and organized data display. Such databases also have the capacity to serve as Laboratory Information Management Systems (LIMS). The Hawaiian Algal Database was designed to showcase specimens collected from the Hawaiian Archipelago, enabling users around the world to compare their specimens with our photographs and DNA sequence data, and to provide lab personnel with an organizational tool for storing various biodiversity data types.</p> <p>Description</p> <p>We describe the Hawaiian Algal Database, a comprehensive and searchable database containing photographs and micrographs, geo-referenced collecting information, taxonomic checklists and standardized DNA sequence data. All data for individual samples are linked through unique accession numbers. Users can search online for sample information by accession number, numerous levels of taxonomy, or collection site. At the present time the database contains data representing over 2,000 samples of marine, freshwater and terrestrial algae from the Hawaiian Archipelago. These samples are primarily red algae, although other taxa are being added.</p> <p>Conclusion</p> <p>The Hawaiian Algal Database is a digital repository for Hawaiian algal samples and acts as a LIMS for the laboratory. Users can make use of the online search tool to view and download specimen photographs and micrographs, DNA sequences and relevant habitat data, including georeferenced collecting locations. It is publicly available at <url>http://algae.manoa.hawaii.edu</url>.</p
Data from: The Hawaiian freshwater algae biodiversity survey (2009-2014): systematic and biogeographic trends with an emphasis on the macroalgae
Background
A remarkable range of environmental conditions is present in the Hawaiian Islands due to their gradients of elevation, rainfall and island age. Despite being well known as a location for the study of evolutionary processes and island biogeography, little is known about the composition of the non-marine algal flora of the archipelago, its degree of endemism, or affinities with other floras. We conducted a biodiversity survey of the non-marine macroalgae of the six largest main Hawaiian Islands using molecular and microscopic assessment techniques. The present biodiversity survey aimed to evaluate the competing ideas of whether endemism or cosmopolitanism better explain freshwater algal distribution patterns, and to provide a baseline data set for monitoring future biodiversity changes in the Hawaiian Islands.
Results
A total of 1,786 aquatic and terrestrial habitats and 1,407 distinct collections of non-marine macroalgae were collected from the islands of Kauai, Oahu, Molokai, Maui, Lanai and Hawaii from the years 2009-2014. Targeted habitats included streams, wet walls, high elevation bogs, taro fields, ditches and flumes, lakes/reservoirs, cave walls and terrestrial areas. Numerous collection sites lacked freshwater macroalgae, and these sites were typically terrestrial and wet wall habitats that were sampled for diatoms and other microalgae. Approximately 50% of the identifications were of green algae, with lesser proportions of diatoms, red algae, cyanobacteria, xanthophytes and euglenoids. Molecular characterization of individual isolates yielded 898 DNA sequences representing eight different markers, which enabled an assessment of the number of taxonomic entities for genera collected as part of the survey. Forty-four well-characterized taxa were compared with literature records for these same taxa to assess global distribution patterns, and were characterized as belonging to one of four distributional categories based on how many regions of the world in which they were reported as being present. This analysis revealed no clear biogeographic affinities of the flora, with 27.3% characterized as âcosmopolitanâ, 11.4% âendemicâ, and 61.3% as intermediate.
Conclusions
The Hawaiian freshwater algal biodiversity survey (2009-2014) represents the first comprehensive effort to collect, characterize and document the non-marine algae of a tropical region in the world using both morphological and molecular tools. The survey supported the design and population of the Hawaiian Freshwater Algal Database, which houses all project data and serves as a digital repository of photographs and micrographs, georeferenced localities and DNA sequence data. These analyses yielded an updated checklist of the non-marine macroalgae of the Hawaiian Islands, and revealed varied biogeographic affinities of the flora that are likely a product of both natural and anthropogenic dispersal
data for distributional analysis
Thallus and dispersal unit sizes of macroalgae used for analyses in the current manuscript
excel version of isolates from HfwADB for table 2
GPS data for isolates characterized in the surve