7774

• UCREFRP Catalog Number: 7774
• Author: Desert Fishes Council, H., Dean A., ed.)‎.
• Title: Proceedings of the Desert Fishes Council Volume XXIV, 1992 Annual Symposium, 18 to 21 November, Mesa, Arizona.
• USFW Year: 1992.
• USFW - Doc Type: November 18-21.
• Copyright Material: NO

PROCEEDINGS OF THE DESERT FISHES COUNCIL 1992 - VOLUME MV
dependido de la production de alimento en esas areas. El objetivo de nuestro estudio, fue estimar la densidad y asociaci6n
de habitat de microcrustaceos planctdnicos y bentonicos en los biotopos de rio, remanso, y planicie de inundation.
Se seleccionaron sitios representativos para cada uno de los tipos de habitats; en cads sitio se efectuaron 50
muestreos de bentos y cinco arrastres verticales de plancton.
Hasta la fecha, 25 especies de microcrustaceos ban sido colectados a identificados. Siete especies fueron colectadas
en el habitat de plancton del rio, y solamente tres especies ocurrieron en el bentos del rfo. En el sitio de remanso se
colectaron 11 especies en el plancton y solamente dos en el bentos. En el habitat de planicie de inundation el numero
de especies fue cambiante en el tiempo, sin embargo en terminos generales, fue el que registi-6 el mayor ndmero de
especies (18 en el plancton y 12 en el bentos). La mayorfa de las especies en esos tres habitats exhiben ya sea habitos
planctonicos como bentonicos. Algunas especies son inns probables a ser encontradas en el plancton o en el bentos, en
comparacidn con otras taxa; pero es notable que muchos de los microcrustaceos son capases de existir en cualquier estilo
de vida. Solamente unas pocas especies aparentan ser miembros obligados del plancton o del bentos. Las densidades son
altas. Por ejemplo, en ]as planicies de inundation fueron estimadas densidades en el plancton de 205,922 microcrustaceos
por metro cdbico y densidades en el bentos de 261,228 microcrustaceos por metro cuadrado.
MOEHLE, C. (Arizona State Council Chairman, Trout Unlimited)
Convener and moderator: Management toward recovery of Apache trout Oncorhynchus
apache. A Workshop presented by Trout Unlimited and the Desert Fishes Council.
KEYWORDS: Apache trout; management; recovery
ABSTRACT
NO ABSTRACT RECEIVED BUT PAPER PRESENTED
RINNE, J. N. (U.S. Forest Service, Rocky Mountain Forest and Range Experiment Station)
Historical review of concern and management for Oncorhynchus apache.
KEYWORDS: Apache trout; management
ABSTRACT
NO ABSTRACT RECEIVED BUT PAPER PRESENTED
DIVINE, G. (U.S. Fish and Wildlife Service, Office of Endangered Species, Albuquerque, IoM)
Management goals toward recovery and delisting.
KEYWORDS: Apache trout; management; recovery; delisting
ABSTRACT
In 1966 the U.S. Congress passed the Endangered Species Preservation Act providing protection against extinction
for the Apache trout and numerous other animal species. Subsequent Acts have further strengthened the Nation's resolve
to prevent extinction of species. The initial recovery plan for Apache trout was completed in 1978 and revised in 1983
setting forth objectives deemed necessary to recovery this fish. Progress toward recovery has been made; however some
obstacles remain. Recovery is possible and will be achieved.
RESUMEN
RECEIVED TOO LATE TO BE TRANSLATED
CONTRIBUTED PAPER
Congress passed the Endangered Species Preservation Act in 1966. This law allowed listing of native animal
species as endangered and provided limited means for the protection of species so listed. On March 11, 1967, the
Arizona trout (Salmo apache) (= Apache trout, Oncorhynchus apache) was listed as one of numerous species
"threatened with extinction. The Endangered Species Conservation Act of 1969 was passed to provide additional
protection to species in danger of "worldwide extinction". As a result of this Act, the Apache trout was listed as
"endangered. " This designation remained until July 16, 1975 when the classification was changed to "threatened".
This action was taken because the species was not "endangered" as defined by the Endangered Species Act of 1973,
but rather, properly classified as "threatened. " The reasons for the change in designation was that good populations
of pure stocks of Apache trout existed in several headwater streams of the east fork of the White River and
headwaters of Bonito Creek. Additionally, it was believed that fish culture work being done on this species and
stream renovation projects would result in the reintroduction of Apache trout to streams within its historic range
and therefore the species was not in danger of extinction throughout all or a significant portion of its historic range.
The initial recovery plan was prepared by the Apache trout recovery team and eventually approved by U.S.
Fish and Wildlife Service Director Lynn Greenwalt on August 20, 1979. This plan was revised by the recovery team
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