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A review of Ireland's waterbirds, with emphasis on wintering migrants and reference to H5N1 avian influenza.

Crowe O, Wilson J, Aznar I, More S - Ir Vet J (2009)

Bottom Line: The distribution, feeding habits and social interactions of the five groups of wintering migrants are considered in detail.Throughout Ireland, there is interaction between different waterbird populations (breeding migrants, the wintering migrants and resident waterbird populations).There is also a regular and complex pattern of movement between feeding and roosting areas, and between wetlands and farmland.

View Article: PubMed Central - HTML - PubMed

Affiliation: Birdwatch Ireland, P,O, Box 12, Greystones, Co, Wicklow, Ireland.

ABSTRACT
Ireland is characterised by its diversity and large abundance of wetlands, making it attractive to a wide variety of waterbirds throughout the year. This paper presents an overview of Ireland's waterbirds, including ecological factors relevant to the potential introduction, maintenance, transmission and spread of infectious agents, including the H5N1 avian influenza virus, in Ireland. Particular emphasis is placed on five groups of wintering migrants (dabbling and sieving wildfowl, grazing wildfowl, diving wildfowl, waders and gulls), noting that the H5N1 avian influenza virus has mainly been isolated from this subset of waterbirds. Ireland's wetlands are visited during the spring and summer months by hundreds of thousands of waterbirds which come to breed, predominantly from southern latitudes, and during the autumn and winter by waterbirds which come from a variety of origins (predominantly northern latitudes), and which are widely distributed and often congregate in mixed-species flocks. The distribution, feeding habits and social interactions of the five groups of wintering migrants are considered in detail. Throughout Ireland, there is interaction between different waterbird populations (breeding migrants, the wintering migrants and resident waterbird populations). There is also a regular and complex pattern of movement between feeding and roosting areas, and between wetlands and farmland. These interactions are likely to facilitate the rapid transmission and spread of the H5N1 avian influenza virus, if it were present in Ireland.

No MeSH data available.


Related in: MedlinePlus

Distribution and abundance of mallard (Anas platyrhynchos) in Ireland. These data were collected by BirdWatch Ireland as part of the Irish Wetland Bird Survey. The counts were conducted over the last 10 years, mainly from September to March. At each sampling site, the circle represents the maximum number of mallard supported, based on the maximum number observed at each of the recording sites on a single occasion during the last 10 years.
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Figure 4: Distribution and abundance of mallard (Anas platyrhynchos) in Ireland. These data were collected by BirdWatch Ireland as part of the Irish Wetland Bird Survey. The counts were conducted over the last 10 years, mainly from September to March. At each sampling site, the circle represents the maximum number of mallard supported, based on the maximum number observed at each of the recording sites on a single occasion during the last 10 years.

Mentions: Wintering waterbirds in the Republic of Ireland have been monitored for almost 40 years as part of three main surveys, the Wetlands Enquiry (1971/72-1973/74) [11], the Winter Wetlands Survey (1984/85-1986/87) [15] and the Irish Wetland Bird Survey (I-WeBS 1994/95-present) [2]. In most cases, parallel surveys have been carried out in Northern Ireland, with the most recent, the Wetland Bird Survey (WeBS), in operation since 1993/94. An example of information generated from I-WeBS (specifically, the distribution and abundance of Mallard, Anas platyrhynchos) is presented in Figure 4. These surveys have served to highlight the importance of wetlands in Ireland for wintering waterbirds, and have defined a suite of wetlands which have proven of significance, many of which have since been designated as Special Protection Areas (SPAs) under the EU Birds Directive (EEC/79/409) [8]. To this end, waterbird populations, and the wetlands upon which they rely, continue to be monitored in Ireland through I-WeBS and WeBS.


A review of Ireland's waterbirds, with emphasis on wintering migrants and reference to H5N1 avian influenza.

Crowe O, Wilson J, Aznar I, More S - Ir Vet J (2009)

Distribution and abundance of mallard (Anas platyrhynchos) in Ireland. These data were collected by BirdWatch Ireland as part of the Irish Wetland Bird Survey. The counts were conducted over the last 10 years, mainly from September to March. At each sampling site, the circle represents the maximum number of mallard supported, based on the maximum number observed at each of the recording sites on a single occasion during the last 10 years.
© Copyright Policy
Related In: Results  -  Collection

Show All Figures
getmorefigures.php?uid=PMC3113761&req=5

Figure 4: Distribution and abundance of mallard (Anas platyrhynchos) in Ireland. These data were collected by BirdWatch Ireland as part of the Irish Wetland Bird Survey. The counts were conducted over the last 10 years, mainly from September to March. At each sampling site, the circle represents the maximum number of mallard supported, based on the maximum number observed at each of the recording sites on a single occasion during the last 10 years.
Mentions: Wintering waterbirds in the Republic of Ireland have been monitored for almost 40 years as part of three main surveys, the Wetlands Enquiry (1971/72-1973/74) [11], the Winter Wetlands Survey (1984/85-1986/87) [15] and the Irish Wetland Bird Survey (I-WeBS 1994/95-present) [2]. In most cases, parallel surveys have been carried out in Northern Ireland, with the most recent, the Wetland Bird Survey (WeBS), in operation since 1993/94. An example of information generated from I-WeBS (specifically, the distribution and abundance of Mallard, Anas platyrhynchos) is presented in Figure 4. These surveys have served to highlight the importance of wetlands in Ireland for wintering waterbirds, and have defined a suite of wetlands which have proven of significance, many of which have since been designated as Special Protection Areas (SPAs) under the EU Birds Directive (EEC/79/409) [8]. To this end, waterbird populations, and the wetlands upon which they rely, continue to be monitored in Ireland through I-WeBS and WeBS.

Bottom Line: The distribution, feeding habits and social interactions of the five groups of wintering migrants are considered in detail.Throughout Ireland, there is interaction between different waterbird populations (breeding migrants, the wintering migrants and resident waterbird populations).There is also a regular and complex pattern of movement between feeding and roosting areas, and between wetlands and farmland.

View Article: PubMed Central - HTML - PubMed

Affiliation: Birdwatch Ireland, P,O, Box 12, Greystones, Co, Wicklow, Ireland.

ABSTRACT
Ireland is characterised by its diversity and large abundance of wetlands, making it attractive to a wide variety of waterbirds throughout the year. This paper presents an overview of Ireland's waterbirds, including ecological factors relevant to the potential introduction, maintenance, transmission and spread of infectious agents, including the H5N1 avian influenza virus, in Ireland. Particular emphasis is placed on five groups of wintering migrants (dabbling and sieving wildfowl, grazing wildfowl, diving wildfowl, waders and gulls), noting that the H5N1 avian influenza virus has mainly been isolated from this subset of waterbirds. Ireland's wetlands are visited during the spring and summer months by hundreds of thousands of waterbirds which come to breed, predominantly from southern latitudes, and during the autumn and winter by waterbirds which come from a variety of origins (predominantly northern latitudes), and which are widely distributed and often congregate in mixed-species flocks. The distribution, feeding habits and social interactions of the five groups of wintering migrants are considered in detail. Throughout Ireland, there is interaction between different waterbird populations (breeding migrants, the wintering migrants and resident waterbird populations). There is also a regular and complex pattern of movement between feeding and roosting areas, and between wetlands and farmland. These interactions are likely to facilitate the rapid transmission and spread of the H5N1 avian influenza virus, if it were present in Ireland.

No MeSH data available.


Related in: MedlinePlus