Lake Constance: Bay of Constance (Switzerland) IBA | Details

CH015

Lake Constance: Bay of Constance

Current view: Data table and detailed info

IBA Justification

The site was identified as internationally important for bird conservation in 2000 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 List	Season (year/s of estimate)	Size	IBA criteria
Common Pochard Aythya ferina	VU	winter (1998)	1,400–9,000 birds	B1i
A4iii Species group - waterbirds	n/a	unknown (-)	min 20,000 birds	A4iii

IBA Conservation

Ideally the conservation status of the IBA will have been checked regularly since the site was first identified in 2000. The most recent assessment (2011) is shown below.

IBA conservation assessment
Year of assessment	State	Pressure	Response
2011	not assessed	high	very low
Whole site assessed?	State assessed by	Accuracy of information
yes	unset	medium

Pressure (threats to the trigger species and/or their habitats)
Threat	Timing	Scope	Severity	Result
Human intrusions and disturbance	happening now	whole of population/area (>90%)	slow decline (1–10% over 3 generations)	high
Pollution	happening now	whole of population/area (>90%)	no or slight decline (<1% over 3 generations)	low
Residential and commercial development	likely in short term (<4 years)	few individuals/small area (<10%)	no or slight decline (<1% over 3 generations)	low

Response (conservation actions taken for the trigger species and/or their habitats)
Designation	Planning	Action	Result
Little/none of area covered (<10%)	No management planning has taken place	Very little or no conservation action taking place	very low

IBA Protection

Year	Protected Area	Designation (management category)	% coverage of IBA
2001	Seeburg	Bundesinventar der Amphibienlaichgebiete von nationaler Bedeutung (IV)	1

Habitats

Habitat	% of IBA	Habitat detail
Wetlands (inland)	87	Standing freshwater
Artificial/Terrestrial	8	Urban parks and gardens; Other urban and industrial areas
Grassland	2
Rocky areas (eg. inland cliffs, mountain peaks)	2	Scree & boulders

Land use

Land use	% of IBA
urban/industrial/transport	8
agriculture	2
fisheries/aquaculture	-
tourism/recreation	-

Recommended citation
BirdLife International (2024) Important Bird Area factsheet: Lake Constance: Bay of Constance (Switzerland). Downloaded from https://datazone.birdlife.org/site/factsheet/lake-constance:-bay-of-constance-iba-switzerland on 22/12/2024.