The site was identified as important in 2002 because it was regularly supporting significant populations of the species listed below, meeting ('triggering') IBA criteria.
Populations meeting IBA criteria ('trigger species'):Species | Current IUCN Red List Category | Season | Year(s) | Population estimate at site | IBA criteria met |
---|---|---|---|---|---|
Pin-tailed Sandgrouse Pterocles alchata | LC | resident | 2002 | 3-6 breeding pairs | C6 |
Red-necked Nightjar Caprimulgus ruficollis | NT | breeding | 2002 | 10-100 breeding pairs | A3 |
Black Stork Ciconia nigra | LC | breeding | 2002 | 18-19 breeding pairs | A4i, B1i, B2, C6 |
Eurasian Eagle-owl Bubo bubo | LC | resident | 2001 | 6-10 breeding pairs | C6 |
Black-winged Kite Elanus caeruleus | LC | resident | 2002 | 1-5 breeding pairs | C6 |
Egyptian Vulture Neophron percnopterus | EN | breeding | 2002 | 20-22 breeding pairs | B2, C6 |
Short-toed Snake-eagle Circaetus gallicus | LC | breeding | 2001 | 5-10 breeding pairs | C6 |
Griffon Vulture Gyps fulvus | LC | resident | 1999 | 110-112 breeding pairs | B2, C6 |
Cinereous Vulture Aegypius monachus | NT | resident | 2002 | 1 breeding pairs | C6 |
Golden Eagle Aquila chrysaetos | LC | resident | 2002 | 6-7 breeding pairs | C6 |
Bonelli's Eagle Aquila fasciata | LC | resident | 2002 | 5-7 breeding pairs | B2, C6 |
Booted Eagle Hieraaetus pennatus | LC | breeding | 2001 | 11-20 breeding pairs | B2, C6 |
Red Kite Milvus milvus | LC | breeding | 2001 | 1 breeding pairs | C6 |
Black Kite Milvus migrans | LC | breeding | 2001 | 6-10 breeding pairs | C6 |
Calandra Lark Melanocorypha calandra | LC | resident | 2002 | common | C6 |
Greater Short-toed Lark Calandrella brachydactyla | LC | resident | 2002 | frequent | C6 |
Spectacled Warbler Curruca conspicillata | LC | breeding | 2002 | rare | A3 |
Blue Rock-thrush Monticola solitarius | LC | resident | 2002 | 80-200 breeding pairs | B2 |
Black Wheatear Oenanthe leucura | LC | resident | 2001 | uncommon | A3, B2, C6 |
The current IUCN Red List category may differ from that which was valid at the time of IBA criteria assessment (2002).
IBA conservation assessment | |||
---|---|---|---|
Year of assessment (most recent) | State (condition) | Pressure (threat) | Response (action) |
2005 | not assessed | low | not assessed |
Was the whole site assessed? | State assessed by | Accuracy of information | |
no | unset | good |
Pressure (threats to the trigger species and/or their habitats) | |||||
---|---|---|---|---|---|
Threat level 1 | Threat level 2 | Timing | Scope | Severity | Result |
Transportation and service corridors | utility & service lines | happening now | small area/few individuals (<10%) | very rapid to severe deterioration | low |
Response (conservation actions taken for the trigger species and/or their habitats) | |||
---|---|---|---|
Protected-area designation | Management planning | Other conservation action | Result |
Not assessed | Not assessed | Not assessed | not assessed |
Protected area (PA) | PA designation | PA area (ha) | Relationship of PA with IBA | Overlap of PA with IBA (ha) |
---|---|---|---|---|
Tejo Internacional; Erges e Pônsul | Special Protection Area (Birds Directive) | 25,775 | protected area overlaps with site | 24,205 |
Tejo Internacional | Natural Park | 23,441 | protected area overlaps with site | 16,627 |
Tejo Internacional | Parque Natural | 26,491 | protected area overlaps with site | 0 |
Habitat (IUCN level 1) | Habitat detail | Extent (% of site) |
---|---|---|
Forest | Broadleaved evergreen woodland | - |
Shrubland | Sclerophyllous scrub, garrigue and maquis | - |
Wetlands (inland) | Water fringe vegetation, Rivers and streams | - |
Rocky areas (eg. inland cliffs, mountain peaks) | Scree & boulders, Inland cliffs | - |
Artificial/Terrestrial | Arable land, Perennial crops, orchards and groves, Forestry plantations | - |
Land-use | Extent (% of site) |
---|---|
fisheries/aquaculture | - |
agriculture | - |
forestry | - |
hunting | - |
tourism/recreation | - |
nature conservation and research | - |
water management | - |
Recommended citation
BirdLife International (2023) Important Bird Area factsheet: Upper River Tejo. Downloaded from
http://datazone.birdlife.org/site/factsheet/upper-river-tejo-iba-portugal on 30/11/2023.