Date: Tue, 7 Nov 2000 19:14:08 +0100 (CET) From: Eric Schlosser <Eric.Schlosser@urz.uni-heidelberg.de> To: cp@opus.hpl.hp.com Message-Id: <aabcdefg3233$foo@default> Subject: Re: endangered bladderworts
Hi,
In general one can search the protection status of species on web sites
like:
CITES:
http://www.wcmc.org.uk/CITES/eng/index.shtml
US:
http://www.natureserve.org/servlet/NatureServe?init=Species
CH:
http://www.cjb.unige.ch/rsf/LR1991/frameset.htm
Apparently there is no worldwide protection of Utricularia. No species are
included in CITES. This does of course not imply that there are no species
that may be endangered.
The Global Rank of the species common to the US is either G4 or G5
(appearantly secure or secure).
US:
Since the habitat is threatened in some states the local existance of a
couple of species is imperiled, e.g. U.floridana AL(S1S2), FL(SR), GA(SR),
NC(SH), SC(S1). In some states its status is unclear(SR), in some they are
extinct(SH), in some threatened(S1 less than 5 sites or less than 1000
individuals).
Some species that are considered to be rare may have been frequently
overlooked, e.g. U.olivacea.
Europe:
The situation here is very similar. Most species however enjoy a
protection by the individual countries or states. In Germany U.bremii is
most endangered with only one single site left. In Switzerland the
widespread species U.intermedia and ochroleuca are most threatened whereas
U.bremii is (only) very threatened. BTW, U.bremii is closely related to
U.minor which is not that rare at all.
Asia:
The endemic U.dimorphanta seems to be highly endagered (in Japan) because
of loss of habitat.
In general the more specialized and localized species are likely to get
wiped out first and I would bet Australia as a centre of diversity has
some unlucky examples to offer.
Kind regards,
Eric
On Mon, 6 Nov 2000 r.jobson@botany.uq.edu.au wrote:
> I am wondering which Utricularia species are endanged.
> Particularly those in South America and the United States. With
> such finite habitats you would expect quite a few. Any help would
> be great.
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