Dataset 892
The Australian Zooplankton Database (Project ID 10): Zooplankton sampling in Albatross Bay
Realm: Marine
Climate: Tropical
Biome: Multiple Central latitude: -12.638990
Central longitude: 141.436100
Duration: 3 years, from 1986 to 1988
Climate: Tropical
Biome: Multiple Central latitude: -12.638990
Central longitude: 141.436100
Duration: 3 years, from 1986 to 1988
8448 records
138 distinct species
Across the time series Calanidae is the most frequently occurring speciesMethods
Dataset: This dataset is a subset from the The Australian Zooplankton Database collated by Claire Davies under Project ID 10. Dataset Methods: This dataset contains records for Project ID 10: Zooplankton sampling in Albatross Bay. All copepods identified to species; other taxa identified to family or functional group. The methods used to collect the data are: net type = square bongo; net diameter = 0.5m, net mesh size = 142microns & samples are from vertical depths ranging between 10 & 60 m. General BioTIME curators note for The Australian Zooplankton Database: please be aware that spatial sampling effort might not be consistent throughout sampling events in some projects/time-series. This can be resolved with gridding and rarefaction, however we strongly recommend against using data for study-level analyses whenever spatial effort varies largely across samples. The Australian Zooplankton Database Metadata: [extracted from https://esapubs.org/archive/ecol/E095/278/metadata.php] -Experimental or sampling design: Data have been collected using different equipment and sampling designs. Zooplankton have been generally collected by net, although Project 597 has used a Continuous Plankton Recorder. Nets used have varying mesh sizes and we have included these where available. Data have been sourced from research cruises, student projects, published literature and time series surveys. Details of each project are described in the file zooplankton_metadata.csv. These metadata should allow users to understand how the data compare with those from other projects when analyzing across data sets. The taxonomic resolution for each project varies according to the aims of each specific survey. This can be especially important when using the data to interpret absences. Absences can be (a) true where the analyst did not find the target taxa, or (b) not truly representative; when the taxa were not sampled for or identified at low resolution (e.g., copepod naupliar lifestages), or the analyst did not look for the particular taxa and presence or absence was not determined. The resolution to which each data set was counted is detailed in the file zooplankton_metadata.csv. We recommend that if a taxon is not mentioned within a project then a real absence should not be interpreted. If a taxon is mentioned in some samples and not others, from within the same data set, a real absence can be inferred. -Taxonomy and systematics: All species names have been verified in the process of uploading the data. Each species name has been updated to the current accepted scientific name according to WoRMS (World Register of Marine Species). For taxa where species identifications cannot be confirmed, a higher taxonomic level has been applied. Much of the data set also includes information on gender for copepods because species identification usually necessitates determination of gender. Taxonomic sheets, which provide species identifications and distribution maps, have been published for many of the common species (mainly copepods) included here and can be found at the Australian Zooplankton Taxonomic Guide and Atlas website (Richardson et al. 2013, Swadling et al. 2013). All data have been standardised to abundance (number per m3 of water filtered) and are therefore comparable across data sets (within the constraints of mesh size and sampling procedures). The sample depth and the water depth at the sample location have been included as fields in the data file so the user can to convert to abundance per m² using whichever depth is relevant to their requirements. This will increase the usability of the data set and improve comparability between shallow and deep tows and locations. The Australian Bathymetry and Topography, June 2009 (http://www.ga.gov.au/corporate_data/67703/Rec2009_021.pdf) and ETOPO2v2 2006 (http://www.ngdc.noaa.gov/mgg/global/relief/ETOPO2/ETOPO2v2-2006/) were used to estimate the water depth for each sample location. We have given the average total length of adult copepods, since copepods have determinate growth, and the body size data is easily available and accepted. The juvenile size is assumed as the smallest adult size in the range given for the adult of that species. The majority of the copepod length data has been compiled from Bradford-Grieve et al. (1999) and the marine planktonic copepod website (Razouls et al. 2005-2014). Other sources were Ruth Böttger-Schnack via personal communications for Oncaeaidae and Frost and Fleminger (1968) for Clausocalanus. Size coefficients are not given for other taxa, for which the sizes are not well known and can vary greatly depending on age (not recorded in the datasets) or environmental conditions. Surveys pertaining only to ichthyoplankton have not been included in this data set. They potentially warrant a separate database due to the volume of data available and there is already a considerable amount of data synthesis in this field. -Data verification: Anomalous data, with uncertain species identifications, locations on land, or data with missing values have been excluded from the data set. Exact sampling dates were not known for some projects and had to be estimated for Projects 18, 24, 29, and 615 from information given in the associated literature. The sampling date range is given in the file zooplankton_metadata.csv. The temporal resolution of the sampling is detailed in the sample_year, sample_month, sample_day and sample_time_UTC fields of the file zooplankton_metadata.csv. Exact sampling locations were not known for some of the sampling sites in Project 615. These have been inferred from figures showing the ships track and sampling locations. These data will be adequate for use in long-term time series or mapping distribution, but care will be needed if associating these values with contemporaneous environmental variables. -Data set usage history: Some of the included data have been used in the Australian Marine Zooplankton Taxonomic Guide and Atlas to map species distributions (Richardson et al. 2013, Swadling et al. 2013) and to provide initial comparisons of tropical copepod communities (McKinnon and Duggan 2014). Large-scale analysis of these data has not yet been undertaken, but it is hoped that the publication of this data set will facilitate further analysis. Most of the projects have been analysed for the purpose for which they were collected and published. Details of these publications and the projects can be found in the file zooplankton_metadata.csv.Citation(s)
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