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• Text account
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• Reference and further resources

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
Gadwall Mareca strepera	LC	winter	2001-2006	486 individuals	B1i, C3
Gadwall Mareca strepera	LC	non-breeding	1999-2004	773 individuals	B1i, C3
Eurasian Bittern Botaurus stellaris	LC	non-breeding	1999-2994	2 individuals	C6
A4iii Species group - waterbirds	n/a	winter	2001-2006	19,899 individuals	A4iii, C4
A4iii Species group - waterbirds	n/a	non-breeding	1999-2004	23,821 individuals	A4iii

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.

State (condition of the trigger species' populations)
Species	Reference	Actual	Units	% remaining	Result
Gadwall Mareca strepera	563	486	individuals	87	not assessed
A4iii Species group - waterbirds	17,508	19,899	individuals	100	favourable

Pressure (threats to the trigger species and/or their habitats)
Threat	Timing	Scope	Severity	Result
Residential and commercial development	happening now	some of area/population (10-49%)	moderate to rapid deterioration	high
Energy production and mining	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	No management planning has taken place	Substantive conservation measures are being implemented but these are not comprehensive and are limited by resources and capacity	low

Year	Protected Area	Designation	% overlap with IBA
1984	Aldwincle Marsh	Site of Special Scientific Interest (UK)	<1
1985	Wollaston Meadows	Site of Special Scientific Interest (UK)	<1
1989	Titchmarsh	Local Nature Reserve	5
1993	Summer Leys	Local Nature Reserve	3
1994	Kinewell Lake	Local Nature Reserve	2
2005	Upper Nene Valley Gravel Pits	Site of Special Scientific Interest (UK)	100
2011	Upper Nene Valley Gravel Pits	Special Protection Area (Birds Directive)	100
2011	Upper Nene Valley Gravel Pits	Ramsar Site, Wetland of International Importance	100

Habitat1	Habitat detail	% of IBA
Grassland		-
Wetlands (inland)		-

1. IUCN Habitat classification.

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Recommended citation
BirdLife International (2024) Important Bird Area factsheet: Upper Nene Valley Gravel Pits (United Kingdom). Downloaded from https://datazone.birdlife.org/site/factsheet/upper-nene-valley-gravel-pits-iba-united-kingdom on 23/11/2024.