Seabird Population Trends and Causes of Change: 1986-2014
Here we present the latest analysed trends in abundance,
productivity, demographic parameters and diet of breeding
seabirds, from the Seabird Monitoring Programme (SMP), along
with interpretive text on the likely causes of change
based on the most recent research.
It replaces and builds upon the now discontinued annual
publication Seabird numbers and breeding success in Britain and
Ireland. Like it, this online report will be updated
Trend information is presented at the UK level and
separately for Scotland, Wales, England, Northern Ireland, Republic
of Ireland, all-Ireland, Channel Islands and Isle of Man.
Interpretation of trends and reasons for change are given largely
at the UK level, unless there is country-specific evidence.
A download of data points presented in the graphs of abundance
and productivity under species accounts is available on request.
The table below contains links to the species accounts and
provides at-a-glance UK population trends (as percentage of change
in breeding numbers) from complete censuses undertaken in
1969-70 (Operation Seafarer), 1985-88 (Seabird Colony
Register, hereafter SCR), and 1998-2002 (Seabird 2000). Change
from 2000-2014 (i.e. over the period since the last national
census) is estimated from trends derived from the SMP sample of
colonies; this analysis is only available for
species with sufficient data to accurately
View the methods
of analysis of breeding abundance and productivity data
presented in the species accounts.
This report should be cited as: JNCC (2015) Seabird Population
Trends and Causes of Change: 1986-2014 Report
(http://www.jncc.defra.gov.uk/page-3201). Joint Nature Conservation
Committee. Updated October 2015. Accessed [INSERT DATE OF
*Not included in Operation Seafarer, the Seabird Colony
Register or Seabird 2000.
**change between censuses in 1984-5 and 2004-5.
*** change between censuses in 1982-91 and 1998-2002