Data Zone
The site was identified as important in 2007 because it was regularly supporting significant populations of the species listed below, meeting ('triggering') IBA criteria.
Populations meeting IBA criteria ('trigger species') at the site:| Species | Red List1 | Season | Year(s) | Size | IBA criteria |
|---|---|---|---|---|---|
| Pied Avocet Recurvirostra avosetta | LC | winter | 2001-2006 | 384 individuals | C6 |
1. The current IUCN Red List category. The category at the time of the IBA criteria assessment (2007) may differ.
Ideally the conservation status of the IBA will have been checked regularly since the site was first identified in 2007. The most recent assessment (2007) is shown below.
| IBA conservation assessment | |||
|---|---|---|---|
| Year of assessment | State | Pressure | Response |
| 2007 | very unfavourable | low | low |
| Whole site assessed? | State assessed by | Accuracy of information | |
| yes | population | good | |
| State (condition of the trigger species' populations) | |||||
|---|---|---|---|---|---|
| Species | Reference | Actual | Units | % remaining | Result |
| Pied Avocet Recurvirostra avosetta | 195 | 384 | individuals | 100 | favourable |
| Dunlin Calidris alpina | 5,700 | 1,623 | individuals | 29 | very unfavourable |
| Pressure (threats to the trigger species and/or their habitats) | ||||
|---|---|---|---|---|
| Threat | Timing | Scope | Severity | Result |
| No known threats | happening now | small area/few individuals (<10%) | no or imperceptible deterioration | low |
| Response (conservation actions taken for the trigger species and/or their habitats) | |||
|---|---|---|---|
| Protected areas | Management plan | Other action | Result |
| Whole area of site (>90%) covered by appropriate conservation designation | Unknown | Unknown | low |
| Year | Protected Area | Designation | % overlap with IBA |
|---|---|---|---|
| 1961 | Erth Barton and Erth Island | Nature Reserve | 4 |
| 1985 | Tamar Estuaries Complex | Special Protection Area (Birds Directive) | 100 |
| 1986 | St John's Lake | Site of Special Scientific Interest (UK) | 14 |
| 1987 | Lynher Estuary | Site of Special Scientific Interest (UK) | 27 |
| 1991 | Tamar - Tavy Estuary | Site of Special Scientific Interest (UK) | 58 |
| 1995 | Tamar Valley | Area of Outstanding Natural Beauty | 77 |
| 1996 | Plymouth Sound And Estuaries | Site of Community Importance (Habitats Directive) | 100 |
| 2004 | Lopwell Dam | Local Nature Reserve | <1 |
| 2005 | Plymouth Sound and Estuaries | Marine Protected Area (OSPAR) | 75 |
| 2011 | Tamar Estuaries Complex | Marine Protected Area (OSPAR) | 74 |
| 2013 | Tamar Estuary Sites | Marine Conservation Zone | 63 |
| 2014 | Tamar Estuary | Marine Protected Area (OSPAR) | 62 |
| Habitat1 | Habitat detail | % of IBA |
|---|---|---|
| Marine Intertidal | major (>10) | |
| Marine Neritic | major (>10) | |
| Forest | Broadleaved deciduous woodland, Mixed woodland | minor (<10) |
| Grassland | minor (<10) | |
| Marine Coastal/Supratidal | minor (<10) | |
| Wetlands (inland) | Water fringe vegetation, Rivers and streams, Fens, transition mires and springs | minor (<10) |
| Land use | % of IBA |
|---|---|
| tourism/recreation | - |
Recommended citation
BirdLife International (2024) Important Bird Area factsheet: Tamar Estuaries Complex (United Kingdom). Downloaded from
https://datazone.birdlife.org/site/factsheet/tamar-estuaries-complex-iba-united-kingdom on 23/11/2024.