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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') at the site:

Species	Red List1	Season	Year(s)	Size	IBA criteria
Greylag Goose Anser anser	LC	passage	1998-2000	2,400-10,000 individuals	A4i, B1i, C3
Red-crested Pochard Netta rufina	LC	breeding	1996-2000	20-40 breeding pairs	B2
Common Pochard Aythya ferina	VU	breeding	1996-2000	790 breeding pairs	B3
Northern Shoveler Spatula clypeata	LC	passage	1998-2002	480-1,300 individuals	C3
Gadwall Mareca strepera	LC	passage	1998-2002	750-950 individuals	A4i, B1i, C3
Gadwall Mareca strepera	LC	breeding	1996-2000	950-1,000 breeding pairs	A4i, B1i, B2
European Nightjar Caprimulgus europaeus	LC	breeding	1998-2002	15-30 breeding pairs	C6
Black Stork Ciconia nigra	LC	breeding	1998-2002	10-15 breeding pairs	B2, C6
White Stork Ciconia ciconia	LC	breeding	1996-2000	10-15 breeding pairs	B2
Black-crowned Night Heron Nycticorax nycticorax	LC	breeding	1998-2002	80-120 breeding pairs	B2, C6
Great White Egret Ardea alba	LC	passage	1998-2002	380 individuals	C2
Common Tern Sterna hirundo	LC	breeding	1998-2000	34-82 breeding pairs	C6
Eurasian Pygmy-owl Glaucidium passerinum	LC	resident	1998-2002	100-150 breeding pairs	C6
Boreal Owl Aegolius funereus	LC	resident	1998-2002	30-50 breeding pairs	C6
Tawny Owl Strix aluco	LC	resident	1998-2000	100-200 breeding pairs	B3
Eurasian Eagle-owl Bubo bubo	LC	resident	1996-2000	10-15 breeding pairs	B2
European Honey-buzzard Pernis apivorus	LC	breeding	1998-2000	10-20 breeding pairs	B3, C6
Western Marsh-harrier Circus aeruginosus	LC	breeding	1998-2002	50-60 breeding pairs	C6
White-tailed Sea-eagle Haliaeetus albicilla	LC	breeding	1998-2002	10-15 breeding pairs	A1, C1
White-tailed Sea-eagle Haliaeetus albicilla	LC	winter	1998-2000	40-50 individuals	A1, C1
Common Kingfisher Alcedo atthis	LC	resident	1996-2000	20-30 breeding pairs	B2, C6
Eurasian Green Woodpecker Picus viridis	LC	resident	1996-2000	80-150 breeding pairs	B2
Grey-faced Woodpecker Picus canus	LC	resident	1998-2002	40-60 breeding pairs	B2, C6
Black Woodpecker Dryocopus martius	LC	resident	1998-2002	80-100 breeding pairs	C6
Middle Spotted Woodpecker Leiopicus medius	LC	resident	1996-2000	90-110 breeding pairs	B3
Woodlark Lullula arborea	LC	breeding	1998-2002	20-30 breeding pairs	C6
Collared Sand Martin Riparia riparia	LC	breeding	1996-2000	500-1,000 breeding pairs	B2
Bluethroat Luscinia svecica	LC	breeding	1998-2002	140-180 breeding pairs	C6

1. The current IUCN Red List category. The category at the time of the IBA criteria assessment (2002) may differ.

Ideally the conservation status of the IBA will have been checked regularly since the site was first identified in 2002. The most recent assessment (2010) is shown below.

State (condition of the trigger species' populations)
Species	Reference	Actual	Units	% remaining	Result
Greylag Goose Anser anser	6,780	3,240	individuals	48	unfavourable
Northern Shoveler Spatula clypeata	698	1,019	individuals	100	favourable
Gadwall Mareca strepera	840	229	individuals	28	very unfavourable
European Nightjar Caprimulgus europaeus	23	17	breeding pairs	74	near favourable
Black Stork Ciconia nigra	12	8	breeding pairs	67	unfavourable
Black-crowned Night Heron Nycticorax nycticorax	100	112	breeding pairs	100	favourable
Great White Egret Ardea alba	380	197	individuals	52	unfavourable
Common Tern Sterna hirundo	60	55	breeding pairs	92	favourable
European Honey-buzzard Pernis apivorus	15	25	breeding pairs	100	favourable
Western Marsh-harrier Circus aeruginosus	55	35	breeding pairs	64	unfavourable
White-tailed Sea-eagle Haliaeetus albicilla	13	13	breeding pairs	100	favourable
White-tailed Sea-eagle Haliaeetus albicilla	45	70	individuals	100	favourable
Common Kingfisher Alcedo atthis	25	17	breeding pairs	68	unfavourable
Black Woodpecker Dryocopus martius	90	70	breeding pairs	78	near favourable
Middle Spotted Woodpecker Leiopicus medius	100	100	breeding pairs	100	favourable
Woodlark Lullula arborea	25	20	breeding pairs	80	near favourable
Bluethroat Luscinia svecica	160	160	breeding pairs	100	favourable

Response (conservation actions taken for the trigger species and/or their habitats)
Protected areas	Management plan	Other action	Result
Not assessed	Not assessed	Not assessed	not assessed

Year	Protected Area	Designation	% overlap with IBA
1950	Ruda	Národní prírodní památka (NPP)	<1
1955	Slepičí vršek	Prírodní památka (PP)	<1
1956	Stará a Nová řeka	Národní prírodní rezervace (NPR)	2
1957	Velký a Malý Tisý	Národní prírodní rezervace (NPR)	1
1974	Fabián	Prírodní rezervace (PR)	<1
1977	Tøeboòsko	UNESCO-MAB Biosphere Reserve	100
1979	Trebonsko	Protected Landscape Area	100
1980	Třeboňsko	Chránená krajinná oblast (CHKO)	93
1987	Vizír	Národní prírodní památka (NPP)	<1
1990	Tøeboòské rybníky	Ramsar Site, Wetland of International Importance	21
1990	Horusická blata	Prírodní rezervace (PR)	<1
1990	Rod	Prírodní rezervace (PR)	<1
1990	Hliníř	Prírodní památka (PP)	<1
1991	Ruda u Kojákovic	Prírodní rezervace (PR)	<1
1991	Bukové kopce	Prírodní rezervace (PR)	<1
1991	Lhota u Dynína	Prírodní památka (PP)	<1
1993	Tøeboòská rašeliništì	Ramsar Site, Wetland of International Importance	2
1994	Výtopa Rožmberka	Prírodní rezervace (PR)	<1
1994	Rybníky u Vitmanova	Prírodní rezervace (PR)	<1
1994	Losí blato u Mirochova	Prírodní rezervace (PR)	<1
1994	Záblatské louky	Prírodní rezervace (PR)	<1
1994	Staré jezero	Prírodní rezervace (PR)	<1
1994	Široké blato	Prírodní rezervace (PR)	<1
1994	Soví les	Prírodní památka (PP)	<1
1994	Rašeliniště Pele	Prírodní rezervace (PR)	<1
1994	Rašeliniště Hovízna	Prírodní rezervace (PR)	<1
1994	Olšina u Přeseky	Prírodní rezervace (PR)	<1
1998	Na Ivance	Prírodní rezervace (PR)	<1
1998	Dračice	Prírodní rezervace (PR)	<1
2001	Pískovna u Dračice	Prírodní památka (PP)	<1
2004	Třeboňsko	Special Protection Area (Birds Directive)	100
2005	Třeboňsko - střed	Site of Community Importance (Habitats Directive)	8
2005	Velký a Malý Tisý	Site of Community Importance (Habitats Directive)	1
2005	Nadějská soustava	Site of Community Importance (Habitats Directive)	1
2005	Fabián - Homolka	Site of Community Importance (Habitats Directive)	1
2005	Široké blato	Site of Community Importance (Habitats Directive)	<1
2005	Hliníř - Ponědrážka	Site of Community Importance (Habitats Directive)	<1
2005	Lužnice a Nežárka	Site of Community Importance (Habitats Directive)	1
2005	Ruda	Site of Community Importance (Habitats Directive)	<1
2005	Purkrabský rybník a Točník	Site of Community Importance (Habitats Directive)	<1
2005	Cepská pískovna a okolí	Site of Community Importance (Habitats Directive)	<1
2005	Malý Horusický rybník	Site of Community Importance (Habitats Directive)	<1
2005	Třeboň	Site of Community Importance (Habitats Directive)	<1
2005	Štičí rybník	Site of Community Importance (Habitats Directive)	<1
2009	Branské doubí	Prírodní památka (PP)	<1
2009	Koštěnický potok	Site of Community Importance (Habitats Directive)	<1
2013	V Luhu	Prírodní rezervace (PR)	<1
2015	Kramářka	Prírodní památka (PP)	<1

Habitat1	Habitat detail	% of IBA
Forest	Broadleaved deciduous woodland, Native coniferous woodland, Mixed woodland, Alluvial and very wet forest	45
Artificial/Terrestrial	Highly improved re-seeded landscapes, Arable land, Perennial crops, orchards and groves, Urban parks and gardens, Other urban and industrial areas	37
Wetlands (inland)	Standing freshwater, Rivers and streams, Water fringe vegetation, Fens, transition mires and springs	24
Grassland	Humid grasslands, Mesophile grasslands	5

1. IUCN Habitat classification.

Land use	% of IBA
forestry	43
agriculture	28
nature conservation and research	20
urban/industrial/transport	14
fisheries/aquaculture	11
tourism/recreation	5
water management	1
hunting	-

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Recommended citation
BirdLife International (2024) Important Bird Area factsheet: Trebonsko (Trebon region) (Czechia). Downloaded from https://datazone.birdlife.org/site/factsheet/trebonsko-(trebon-region)-iba-czechia on 23/11/2024.