Details of Multi-decadal shifts in fish community diversity across a dynamic biogeographic transition zone

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Dataset identification

Title of datasetMulti-decadal shifts in fish community diversity across a dynamic biogeographic transition zone
Narrative summary of datasetAim: A 21-year fisheries-independent monitoring dataset was used to explore fish community diversity across a latitudinal gradient to quantify how diversity has changed and relate those changes in diversity to changes in the abiotic environment. Additionally, this study spans a biogeographic transition zone, providing insight into future species assemblages across regions of relatively high species diversity. Location: Indian River Lagoon, Florida, USA Methods: Spatial and temporal beta diversity was quantified latitudinally with “best derived breaks” determined by using chronological cluster analyses.  Multiple indices of alpha diversity were quantified, including species richness, Shannon diversity, Simpson diversity, and Pielou’s evenness. AIC model selection and environmental fit tests were performed to link patterns of diversity and species assemblages with the abiotic environment. Results: Evidence of a biogeographic transition zone was supported by data spanning the entire study period; the largest break in species assemblage occurred near 28°N. Fine scale analyses using small and large seine catches were noisier than broad analyses but indicated a northern shift in location of the biogeographic transition zone. Beta-diversity was generally dominated by species turnover/balance versus nestedness/gradient components, implying that changes were driven by species sorting associated with the physical environment. Excluding the summation of all environmental variables, temperature and dissolved oxygen best describe patterns of diversity and species composition. Main Conclusions: Over years less affected by disturbances, large and small seine catch data suggest the fish community assemblage and location of the biogeographic transition zone has shifted 9 km and 21 km to the north. If the trends observed in these years were to continue from 1999 until the year 2100, a 111 km to 243 km shift in fish communities could be expected. Variation in rates of movement based on gear type suggest novel species assemblages could ensue. Important Note: This submission has been initially submitted to SEA scieNtific Open data Edition (SEANOE) publication service and received the recorded DOI. The metadata elements have been further processed (refined) in EMODnet Ingestion Service in order to conform with the Data Submission Service specifications.
Start date1997-01-27
End date2017-12-12

Responsible organisations

CountryFrance
Organisation nameIfremer, Scientific Information Systems for the sea
Role of organisationDataset Holding Organisation
CountryFrance
Organisation nameSEA scieNtific Open data Edition
Role of organisationPublisher

Dataset availability

Locations

Map
Latitude north boundary29.044607
Longitude east boundary-80.249817
Latitude south boundary27.42803
Longitude west boundary-80.95
Sea areaNorth Atlantic Ocean
Atlantic Ocean
North America Mainland
Northeast Pacific Ocean (180W)
Northwest Atlantic Ocean (40W)

Data types, collection and processing

Observation typeinapplicable
ParameterAlkalinity, acidity and pH of the water column
Electrical conductivity of the water column
Dissolved oxygen parameters in the water column
Fish abundance in water bodies
Salinity of the water column
Temperature of the water column
Data quality processing informationRaw data

Process information

Submitting organisationRosenstiel School of Marine and Atmospheric Science , University of Miami
Submission identifier (UUID)a53ad03f-3730-7303-3033-000000070325
Date of dataset creation2019-11-03
Date of dataset revision2019-11-21
Date of metadata creation2020-1-27
Date of metadata latest revision2020-10-12
Date of publishing2020-10-29
Date of processed dataset publication2021-01-08
Processing data centreFlanders Marine Institute
Summary record-ID710