Dataset

Marine mammal monitoring from coastal sites in Cardigan Bay, UK, 2004-2009

OBIS-SEAMAP Open in mapper Explore occurrences

Original provider: Liz Allan Dataset credits: Ceredigion County Council Abstract: Since 1994, Ceredigion County Council and a network of shore-based volunteer observes have monitored levels of boat traffic and the occurrence of bottlenose dolphins at seven sites on the coast of Cardigan Bay, Wales. We report high rates of site use and site occupancy by this species during the summer. Although trends in site use may not reflect population trends in the wider region, these data were consistent with recent abundance estimates that indicate that the number of bottlenose dolphins using Cardigan Bay is stable or slightly increasing.

Citation: Allan, L. 2011. Marine mammal monitoring from coastal sites in Cardigan Bay, UK, 2004-2009. Version 1.0.0. Dataset published in OBIS-SEAMAP. https://doi.org/10.82144/c62eca66.

Published: October 07, 2025 at 23:05

URL: http://ipt.env.duke.edu/resource?r=zd_716

Liz Allan
Department of Environmental Services & Housing, Cyngor Sir Ceredigion County Council

3,621
occurrence records
5
taxa
4
species

Taxa

Missing and invalid fields

Field Missing Invalid
maximumDepthInMeters 3,621
100.0%
minimumDepthInMeters 3,621
100.0%

Quality flags

The OBIS data quality flags are documented at https://github.com/iobis/obis-qc.

Flag Dropped Records
NO_DEPTH 3,621
100.0%
ON_LAND 7
0.2%

Measurement types

DNA derived data