I-WeBS Caherglassaun Lough 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 Caherglassaun Lough (site code 0G314) 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 | Caherglassaun Lough - 5 Year | Caherglassaun Lough - 12 Year | Caherglassaun Lough - 23 Year | Long Term Trend |
|---|---|---|---|---|
| Black-tailed Godwit | -97.9 | -64.0 | -72.7 | Large Decline |
| Dunlin | -75.3 | -56.2 | -61.4 | Large Decline |
| Lapwing | -26.0 | -42.2 | -53.2 | Large Decline |
| Redshank | -2.1 | -75.7 | -37.0 | Moderate Decline |
| Pochard | 210.0 | 1.1 | -33.1 | Moderate Decline |
| Shoveler | NA | -90.2 | -30.5 | Moderate Decline |
| Mallard | -37.1 | -50.7 | -21.3 | Intermediate Decline |
| Curlew | 0.0 | 61.1 | -21.2 | Intermediate Decline |
| Teal | -42.5 | -38.0 | -8.3 | Intermediate Decline |
| Wigeon | 62.8 | -9.7 | 42.9 | Stable or Increasing |
| Mute Swan | 670.0 | 0.0 | 83.3 | Stable or Increasing |
| Tufted Duck | 351.2 | 506.2 | 118.0 | Stable or Increasing |
Species Analysis
Mute Swan
| Site | 5 Year | 12 Year | 23 Year |
|---|---|---|---|
| Caherglassaun Lough | 670.0 | 0.0 | 83.3 |
| National | 4.6 | 9.6 | 13.8 |
Shoveler
| Site | 5 Year | 12 Year | 23 Year |
|---|---|---|---|
| National | 23.0 | -21.3 | -10.8 |
| Caherglassaun Lough | NA | -90.2 | -30.5 |
Wigeon
| Site | 5 Year | 12 Year | 23 Year |
|---|---|---|---|
| Caherglassaun Lough | 62.8 | -9.7 | 42.9 |
| National | 0.9 | -17.0 | -18.2 |
Mallard
| Site | 5 Year | 12 Year | 23 Year |
|---|---|---|---|
| Caherglassaun Lough | -37.1 | -50.7 | -21.3 |
| National | -11.3 | -19.7 | -19.1 |
Teal
| Site | 5 Year | 12 Year | 23 Year |
|---|---|---|---|
| Caherglassaun Lough | -42.5 | -38.0 | -8.3 |
| National | 1.8 | 5.7 | 19.4 |
Pochard
| Site | 5 Year | 12 Year | 23 Year |
|---|---|---|---|
| Caherglassaun Lough | 210.0 | 1.1 | -33.1 |
| National | -19.8 | -60.4 | -79.1 |
Tufted Duck
| Site | 5 Year | 12 Year | 23 Year |
|---|---|---|---|
| Caherglassaun Lough | 351.2 | 506.2 | 118.0 |
| National | -20.7 | -28.9 | -17.9 |
Lapwing
| Site | 5 Year | 12 Year | 23 Year |
|---|---|---|---|
| Caherglassaun Lough | -26.0 | -42.2 | -53.2 |
| National | -6.5 | -45.1 | -63.9 |
Curlew
| Site | 5 Year | 12 Year | 23 Year |
|---|---|---|---|
| Caherglassaun Lough | 0.0 | 61.1 | -21.2 |
| National | -9.4 | -23.7 | -43.1 |
Black-tailed Godwit
| Site | 5 Year | 12 Year | 23 Year |
|---|---|---|---|
| Caherglassaun Lough | -97.9 | -64.0 | -72.7 |
| National | 22.5 | 25.0 | 92.3 |
Dunlin
| Site | 5 Year | 12 Year | 23 Year |
|---|---|---|---|
| Caherglassaun Lough | -75.3 | -56.2 | -61.4 |
| National | 5.9 | -21.2 | -45.2 |
Redshank
| Site | 5 Year | 12 Year | 23 Year |
|---|---|---|---|
| Caherglassaun Lough | -2.1 | -75.7 | -37.0 |
| National | -14.0 | -28.4 | 6.7 |
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)