I-WeBS Avoca River/Arklow Trends Report
I-WeBS Trends Report 1994/95 – 2019/20
Published 2022-04-01
Introduction
This report presents site trends based on the data gathered by the Irish Wetland Bird Survey (I-WeBS). Only species with sufficient data at Avoca River/Arklow (site code 0T399) are presented.
This report is part of the I-WeBS National and Site Trends Report 1994/95 – 2019/20.
For guidance on how to interpret these trends, please see the I-WeBS Trends Report Guidance.
For details on the methods used to generate these trends, please see the I-WeBS Trends Report Methodology.
Site Summary
| Species | Avoca River/Arklow - 5 Year | Avoca River/Arklow - 12 Year | Avoca River/Arklow - 23 Year | Long Term Trend |
|---|---|---|---|---|
| Mallard | 18.4 | -19.4 | 38.1 | Stable or Increasing |
| Mute Swan | 25.8 | -17.0 | 62.7 | Stable or Increasing |
| Cormorant | 88.4 | 100.0 | 103.1 | Stable or Increasing |
| Grey Heron | 146.4 | 174.7 | 419.6 | Stable or Increasing |
| Turnstone | 386.2 | 1914.3 | 1914.3 | Stable or Increasing |
Species Analysis
Mute Swan
| Site | 5 Year | 12 Year | 23 Year |
|---|---|---|---|
| Avoca River/Arklow | 25.8 | -17.0 | 62.7 |
| National | 4.6 | 9.6 | 13.8 |
Mallard
| Site | 5 Year | 12 Year | 23 Year |
|---|---|---|---|
| Avoca River/Arklow | 18.4 | -19.4 | 38.1 |
| National | -11.3 | -19.7 | -19.1 |
Turnstone
| Site | 5 Year | 12 Year | 23 Year |
|---|---|---|---|
| Avoca River/Arklow | 386.2 | 1914.3 | 1914.3 |
| National | -33.6 | -46.0 | -23.7 |
Cormorant
| Site | 5 Year | 12 Year | 23 Year |
|---|---|---|---|
| Avoca River/Arklow | 88.4 | 100.0 | 103.1 |
| National | 38.5 | 8.4 | 42.9 |
Grey Heron
| Site | 5 Year | 12 Year | 23 Year |
|---|---|---|---|
| Avoca River/Arklow | 146.4 | 174.7 | 419.6 |
| National | 1.0 | -4.9 | 6.6 |
Citations
Please cite this work as follows:
Kennedy, J., Burke, B., Fitzgerald, N., Kelly, S.B.A., Walsh, A.J. & Lewis, L.J. 2022. Irish Wetland Bird Survey: I-WeBS National and Site Trends Report 1994/95 – 2019/20. BirdWatch Ireland Waterbird Report to the National Parks and Wildlife Service. BirdWatch Ireland, Wicklow. (https://birdwatchireland.ie/app/uploads/2022/04/iwebs_trends_report.html)