Magazine article Endangered Species Bulletin

Region Two. (Regional News and Recovery Updates)

Magazine article Endangered Species Bulletin

Region Two. (Regional News and Recovery Updates)

Article excerpt

Rio Grande Silvery Minnow (Hybognathus amarus) The Rio Grande silvery minnow has been the focus of intensive interagency negotiations and recovery planning lately, as a newly developed multi-stakeholder program comprising public and private entities collaborates with the Service in its recovery activities for the critically endangered fish. Once an abundant species found throughout the Rio Grande basin and its tributaries, the silvery minnow has suffered from habitat loss and alteration due to water diversion for agricultural irrigation. The silvery minnow is currently found only in the middle Rio Grande from Cochiti Dam to the headwaters of the Elephant Butte Dam in New Mexico, a stretch of the Rio Grande that represents approximately five percent of the minnow's historic habitat. (See related article in this edition of the Bulletin.)

The multi-stakeholder team will focus on several recovery issues related to habitat loss and alteration, including identification and implementation of channel restoration activities, water quality improvements, and long-term water management strategies. Additionally, captive propagation and reintroduction programs for the silvery minnow will be continued and augmented at Service, state, and local facilities.

Gila Trout (Oncorhynchus gilae) The Gila trout, a fish native to the rivers of the southwestern United States, is being considered for reclassification from endangered to the less critical category of threatened. When the trout was initially listed in 1966, it existed in only five small populations. Recovery work over the past three decades has included captive propagation from these relict populations and reintroduction of fish into historic stream habitat in New Mexico and Arizona. Less than 10,000 in 1992, the population in 1998 was estimated at 37,000 and is considered stable. …

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