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Location Spain, Castilla y León
Central coordinates 5o 12.00' West  42o 9.00' North
IBA criteria A1, A4i, A4ii, B1i, B1iii, B2, B3, C1, C2, C3, C6
Area 268,000 ha
Altitude 750 - 910m
Year of IBA assessment 2000

SEO/BirdLife



Site description Large plains dominated by arable cultivation with some grasslands. The site includes La Nava lagoon.

Key Biodiversity The site holds steppic species at high densities.

Populations of IBA trigger species

Species Season Period Population estimate Quality of estimate IBA Criteria IUCN Category
Greylag Goose Anser anser winter  1995  1,500-2,000 individuals  good  B1i, C3  Least Concern 
Mallard Anas platyrhynchos winter  1996  6,000-10,000 individuals  good  B1i, C3  Least Concern 
Black-crowned Night-heron Nycticorax nycticorax breeding  1995  30 breeding pairs  good  C6  Least Concern 
Purple Heron Ardea purpurea resident  1996  30-31 breeding pairs  good  C6  Least Concern 
Lesser Kestrel Falco naumanni breeding  1996  100 breeding pairs  medium  A1, B1iii, B2, C1, C2, C6  Least Concern 
Red Kite Milvus milvus winter  1994  600-1,400 individuals  good  A4ii, B1iii, C2  Near Threatened 
Western Marsh-harrier Circus aeruginosus breeding  1995  35-45 breeding pairs  poor  C6  Least Concern 
Montagu's Harrier Circus pygargus breeding  1996  80-120 breeding pairs  poor  B3, C6  Least Concern 
Milvus migrans breeding  1995  50-80 breeding pairs  medium  C6  Not Recognised 
Great Bustard Otis tarda resident  1997  2,000-2,500 breeding pairs  good  A1, B2, C1, C2, C6  Vulnerable 
Little Bustard Tetrax tetrax resident  1996  120-150 breeding pairs  C6  Near Threatened 
Little Bustard Tetrax tetrax winter  1995  250-300 individuals  medium  A1, C1  Near Threatened 
Burhinus oedicnemus resident  1996  80-100 breeding pairs  medium  C6  Not Recognised 
Himantopus himantopus breeding  1996  77-90 breeding pairs  good  C6  Not Recognised 
Eurasian Dotterel Eudromias morinellus winter  1992  1,000 individuals  medium  A4i, B1i, C2  Least Concern 
Black-bellied Sandgrouse Pterocles orientalis resident  1996  100-200 breeding pairs  medium  B2, C6  Least Concern 
Calandra Lark Melanocorypha calandra resident  1996  4,500-11,000 breeding pairs  medium  B2  Least Concern 

IBA Monitoring

2008 high not assessed high
  unset
Unknown

Agriculture and aquaculture annual & perennial non-timber crops - shifting agriculture happening now majority/most of area/population (50-90%) moderate to rapid deterioration high
Agriculture and aquaculture livestock farming and ranching (includes forest grazing) - small-holder grazing, ranching or farming happening now some of area/population (10-49%) moderate to rapid deterioration high
Biological resource use hunting & collecting terrestrial animals - persecution/control happening now some of area/population (10-49%) moderate to rapid deterioration high
Biological resource use hunting & collecting terrestrial animals - unintentional effects (species is not the target) happening now some of area/population (10-49%) moderate to rapid deterioration high
Climate change and severe weather drought happening now majority/most of area/population (50-90%) moderate to rapid deterioration high
Human intrusions and disturbance recreational activities happening now some of area/population (10-49%) moderate to rapid deterioration high
Invasive & other problematic species, genes & diseases invasive non-native/alien species/diseases - unspecified species happening now some of area/population (10-49%) moderate to rapid deterioration high
Natural system modifications fire & fire suppression - increase in fire frequency/intensity happening now some of area/population (10-49%) moderate to rapid deterioration high
Pollution agricultural & forestry effluents - type unknown/unrecorded happening now some of area/population (10-49%) slow but significant deterioration medium
Pollution domestic & urban waste water - type unknown/unrecorded happening now some of area/population (10-49%) slow but significant deterioration medium
Pollution garbage & solid waste happening now some of area/population (10-49%) slow but significant deterioration medium
Pollution industrial & military effluents - type unknown/unrecorded happening now some of area/population (10-49%) moderate to rapid deterioration high
Transportation and service corridors roads and railroads happening now some of area/population (10-49%) slow but significant deterioration medium
Transportation and service corridors utility & service lines happening now some of area/population (10-49%) moderate to rapid deterioration high

Wetlands (inland) Standing freshwater  0 0 moderate (70-90%) moderate (70-90%) unfavourable

Anser anser Greylag Goose 2000 32000 individuals 100 favourable

Whole area of site (>90%) covered by appropriate conservation designation  A comprehensive and appropriate management plan exists that aims to maintain or improve the populations of qualifying bird species  Substantive conservation measures are being implemented but these are not comprehensive and are limited by resources and capacity  high 

Habitats

IUCN habitat Habitat detail Extent (% of site)
Forest Alluvial and very wet forest; Broadleaved evergreen woodland  -
Grassland Humid grasslands  5%
Wetlands (inland) Rivers and streams; Standing freshwater; Water fringe vegetation  -
Artificial - terrestrial Arable land; Forestry plantations; Ruderal land  90%

Land use

Land-use Extent (% of site)
agriculture 100%
hunting 100%

Protection status National None International None

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Recommended citation  BirdLife International (2015) Important Bird Areas factsheet: Tierra de Campos steppes. Downloaded from http://www.birdlife.org on 04/08/2015

To provide new information to update this factsheet or to correct any errors, please email BirdLife