Since its inception in 1997, the Turner Endangered Species Fund has
developed a proven conservation track record including among other things: 1)
working as the only private permittee of the US Fish and Wildlife Service on
wolf recovery, 2) managing one of the most productive black-footed ferret
breeding facilities in North America, 3) managing the most successful
population of reintroduced desert bighorn sheep in New Mexico, 4) managing 1
of only 3 pre-release facilities for the Mexican Wolf Recovery Program, 5)
conducting the only successful attempt by any organization to restore a
population of red-cockaded woodpeckers where no founder population existed,
6) engaging in the largest ongoing effort of any organization to translocate
and expand prairie dog populations, 7) serving as a primary catalyst for a bi-national
campaign to conserve migratory pollinators along a 2,500-mile migration
corridor from the southwestern U.S. to southern Mexico, 8) conducting the
largest private effort to restore the native longleaf pine/wiregrass
ecosystem in the southeast, 9) producing the most extensive study ever to
assess feasibility of reintroducing swift fox, and 10) assembling and leading
the most serious effort to evaluate the restoration potential for wolves in
the Southern Rockies. We summarize these and other efforts for 2000 and 2001
below.
Red-cockaded Woodpeckers (Picoides
borealis) - Avalon Plantation, Florida
During the 2000 breeding season, 4 breeding groups from previous translocations
established residency on the Avalon Plantation and successfully fledged 8
young (7 females and 1 male). We translocated 10 sub-adult birds from private
lands located in South Georgia. In addition to enhancing recovery of this
endangered species, these translocations are part of an integrated research
program in cooperation with Tall Timbers Research Station studying the
effects of removal of juvenile birds on the donor population and the genetic
structure of the de novo Avalon population.
During 2001, we established 6 breeding groups and an additional 3 single male
groups. Thirteen juvenile birds were successfully fledged (5 females and 8
males). Moreover, we experienced our first successful nest in a natural
cavity. We translocated 10 sub-adult birds, while continuing the work on our
research project. The population size at then end of the year was 43 birds.
Prairie dogs (Cynomys ludovicianus)
During 2000 we established 20 new colonies: 10 at Vermejo Park Ranch, NM; 5
at Bad River Ranches, SD; 3 at Armendaris Ranch, NM; and 2 at Ladder Ranch,
NM. We were able to produce acreage expansion of over 25% since 1999 on
colonies at Vermejo and Bad River. Two research projects commenced on the
colonies at the Armendaris (1 on burrowing owls [Athene cunicularia] by
New Mexico State University and 1 on prairie dog-range interactions by the
USDA Jornada Experimental Range). We initiated 1 research project on
anti-predator responses of juvenile prairie dogs on the colonies at Vermejo
Park (conducted by the University of California, Davis).
During 2001 we established 29 new colonies: 6 at Vermejo Park Ranch, NM; 10
at Bad River Ranches, SD; 3 at Armendaris Ranch, NM; 3 at Z-bar Ranch, KS;
and 3 at Blue Creek Ranch, NE and by year’s end we had over 2,200 acres of
prairie dogs on Turner ranches. Research projects continued on burrowing
owls, prairie dog-range interactions, and on anti-predator responses of
juvenile prairie dogs. New research commenced examining prairie dog
energetics (New Mexico State University) and on the influence of social
groupings on transplant success at Vermejo (University of California, Davis).
Black-footed Ferrets (Mustela nigripes)–
Vermejo Park Ranch, New Mexico
During 2000, the Vermejo Park Ranch ferret breeding and preconditioning
facility produced 21 ferret kits for release. This high level of production
occurred despite parasitism of some animals by the flesh fly Wohlfahrtia
vigil. These kits were released at the ferret release area in
northeastern Utah. An additional 9 kits from Phoenix Zoo were preconditioned
in our facility and released in Montana. During 2001, the Vermejo Park Ranch
ferret facility produced 17 kits, again despite parasitism of some animals by
Wohlfahrtia vigil. These kits were released near Janos, Chihuahua,
Mexico; the first transfer of black-footed ferret kits for release in another
county. In addition, 13 kits produced at the Phoenix Zoo were preconditioned
at Vermejo Park and subsequently released in Mexico. Because we have been
able to expand prairie dogs to more than 1,200 acres on the Vermejo, we are
preparing a proposal to the US Fish and Wildlife Service to begin an experimental
ferret release there in 2003 or 2004.
Northern Rocky Mountain Wolf (Canis lupus)
restoration
During 2000, we built a 3/4 acre chain link pen on the Flying D Ranch to hold
wolves for the US Fish and Wildlife Service (USFWS) and to conduct aversive
conditioning studies testing electronic training collars. In cooperation with
USFWS and Wildlife Services, we placed in the pen a pack of wolves that has
been involved in livestock depredations near Yellowstone (these wolves had
been otherwise slated for removal). We tested the aversive conditioning
logistics and equipment on this pack and released them back into their natal
territory. Two of the 3 males released contributed to wolf recovery by siring
about10 pups in 2 packs. We also assisted the USFWS with trapping, monitoring
and managing 6 packs of wolves in southwest Montana and worked with numerous
ranchers in the area to resolve wolf conflicts with livestock. We are
cooperating on a graduate research project at the University of Montana to
examine factors influencing wolf predation on livestock in the northern
Rockies.
During 2001, we removed 2 different groups of wolves from their original
territory and held them in the pen on the Flying D Ranch in an effort to
prevent livestock depredations. We continued to test equipment and logistics
of aversive conditioning on these wolves. Both packs were released to
northwest Montana where they continue to be monitored. We assisted the USFWS
with trapping, monitoring and managing 7 packs of wolves in southwest
Montana. We gave less-than-lethal munitions training to about 20 ranchers in
southwest Montana so they could haze wolves away from livestock if necessary. We are developing a study of the impacts
of wolves on deer/elk/bison (Bison bison) on the Flying D Ranch.
Southern Rockies Wolf (Canis lupus)
Restoration
Our central accomplishment for 2000 was catalyzing formation of the Southern
Rockies Wolf Restoration Project, a coalition of 17 organizations dedicated
to the cause. In 2000, TESF and Defenders of Wildlife sponsored a Southern
Rockies wolf restoration workshop. A variety of special interest groups such
as the Colorado Cattlemen’s Association attended the workshop, which was
facilitated by the International Union for the Conservation of Nature’s Conservation
Breeding Specialist Group. The resulting population and habitat viability
analysis report greatly advanced the scientific underpinnings of the issue.
During the workshop we modeled several landscape variables that influence
wolf survival (e.g. road density, distribution and abundance of native
ungulates, habitat connectivity) and concluded that the ecoregion could
support up to 2,000 wolves.
During 2000 we also finalized a plan for developing a wolf experience center
at Vermejo. The Center would improve the survival potential of captive-born
Mexican wolves before they are released to the wild. A select number of
captive-born, naïve Mexican wolves would be allowed to inhabit the prey-rich
Vermejo Park Ranch, accompanied by an extremely intensive research and monitoring
program implemented by our field team.
During 2001 we began developing the seminal reference on wolves in the
Southern Rockies entitled Suitability of the Southern Rockies for Wolf
Restoration: An Ecological and Social Assessment. Additionally, TESF was
instrumental in working with Decision Research on a public opinion survey
that revealed widespread and bipartisan support for wolf recovery in the
region. The Project recently catalyzed the formation of the Southern Rockies
Wolf Restoration Information Network. The Network is comprised of the Denver
Zoo, Cheyenne Mountain Zoo, Pueblo Zoo, Albuquerque Biological Park, and the
International Wolf Center and has a singular mission focusing on education.
The Network’s mission is to provide the communities of the Southern Rockies
with scientific information about and a diverse public forum for issues
related to restoring wolves to the region.
- View results of research to assess the suitability of the Southern Rockies
ecoregion for gray wolves. View PDF (3.3 MB)
- View research to assess suitability
of the southwestern United States and northern Mexico for Mexican wolves.
View PDF (307 KB)
Mexican wolves (Canis lupus baileyi)
– Ladder Ranch, New Mexico
We continued efforts at the Ladder Ranch to breed and prepare Mexican wolves
for release to the wild in cooperation with the USFWS. During spring 2000 a
litter of pups was born at the ranch. In early 2000, the 6-member Gavilan
pack was returned from the wild to the Ladder Ranch facility for management
purposes. Throughout most of 2001, a TESF biologist provided routine
assistance with the monitoring and management of free-ranging wolves. During
2001 we also served in an advisory and review capacity for the Mexican wolf
recovery program. Specifically, we were intimately involved in the technical
3-year review of the reintroduction project being conducted in the Gila and
Apache National Forest.
During 2001, the Ladder Ranch Mexican Wolf Pre-release Captive Facility held
between 7 and 18 wolves as support for the USFWS Mexican Wolf Recovery Program.
One pair was allowed to breed this season, and they produced 3 surviving pups
in April. That pack of 9 animals (alpha pair + 4 yearlings + 3 pups) was
released in June into the Blue Range Wolf Recovery Area in the Apache
National Forest of Arizona.
We conducted 4 transfers of animals between the Ladder Ranch facility and
other participating Mexican Wolf Species Survival Program facilities. We
created 2 pairs at the Ladder Ranch facility that are scheduled for release
into the Gila National Forest of New Mexico in spring 2002. For the first
time in many decades, the Ladder Ranch was host to 2 free-ranging Mexican
wolves!
Swift Fox (Vulpes velox)– Bad River
Ranches, South Dakota
We assessed the potential for restoration of swift fox on and around the Bad
River Ranches in western South Dakota following the International Union for
the Conservation of Nature guidelines. We assessed landscape conditions and
measured swift fox predator and prey abundance, and results indicated that
more than 75% of the landscape in the area appears suitable for swift fox.
Prey abundance is high enough to support an estimated viable population of
>200 swift foxes, but with a relatively low reproductive rate. This
predicted low reproductive rate combined with a relatively dense coyote
population suggests that coyote control would be necessary to alleviate
predation pressure during reintroduction until swift fox were well
established.
Encouraged by our modeling and field survey efforts, we reviewed the
taxonomic status of foxes in the northern Great Plains; reviewed previous
reintroductions; assessed features of reintroduction sites; examined social,
economic, and legal considerations; and developed methods for translocation
at this site. In cooperation with the US Fish and Wildlife Service; US Forest
Service; South Dakota Department of Game, Fish and Parks; Wyoming Department
of Game and Fish; Colorado Division of Wildlife; and the Lower Brule Tribe,
we made the decision to translocate approximately 30 foxes annually over a 6
year period from Wyoming and Colorado, starting in 2002.
In an effort to include all interested stakeholders in this decision, we
conducted 4 public meetings, 1 public hearing, and 1 field trip with local
residents and agriculture organization representatives to provide information
on fox ecology and the reintroduction proposal. We stressed the program’s
responsiveness to the needs, desires, and opinions of the local public and
incorporated these into the program.
These efforts culminated in the unanimous approval of the South Dakota
Animal Industry Board for a permit to release foxes.
We also completed preparation of release sites and construction of 10
soft-release pens. The pens will also be used for the 14-day quarantine
period for all foxes. We continued predator prey surveys on Bad River Ranches,
Lower Brule Sioux Reservation, and Ft. Pierre National Grasslands during
2001. We assisted Wyoming Game and Fish with surveys for swift fox in
southeastern Wyoming where we plan to obtain foxes for reintroduction into
South Dakota.
Desert Bighorn Sheep (Ovis canadensis
mexicanus) – Armendaris Ranch, New Mexico
We conducted telemetry monitoring of the Fra Cristobal Mountain (FCM) desert
bighorn sheep herd on a near daily basis to monitor sheep survival,
population size, composition, activity, and habitat use. We continued the
cooperative project with the Hornocker Wildlife Institute on ecology of
cougars (Puma concolor) and interactions with sheep on the FCM. The
primary objective of the cougar project is to contribute to the recovery of
desert bighorn sheep in the FCM by determining science-based methods for short-term
reductions in cougar predation on sheep, especially efficient and non-lethal
methods. We continued fieldwork in 2000 to determine the size, structure,
social characteristics, and habitat use of the cougar population by trapping,
radio collaring, and monitoring individuals.
The FCM sheep herd is the best performing herd in the state. In fact, it is
the only herd that has grown annually since 1996 and it is the only herd in
the state increasing in 2000. Additionally, based on population modeling, it
is the herd in the state that has the best likelihood of survival well into
the future. At the end of 2000, the FCM sheep herd consisted of 56
individuals, including 23 rams, 27 ewes (14 radiocollared), and 6 lambs. We
detected 12 lambs born in 2000, 6 were confirmed surviving at year’s end. Two
radio-collared adult ewes were killed by cougars. A collared ram died
apparently due to a broken neck suffered during a fighting bout with another
ram. We removed the collared sub-adult male cougar responsible for killing a
collared adult ewe. The remaining original radiocollared male cougar
continued to range predominantly to the north of the FCM. We caught another
adult male cougar in May, and it has subsequently ranged to the south of the
FCM. We captured a female cougar in June on the north end of the mountain.
Our best estimate showed the sheep herd likely consisted of 66 individuals by
the end of 2001, including 23 rams, 29 ewes (13 radiocollared), and 5 male
and 9 female lambs (6 radiocollared). We detected 24 lambs born during 2001,
with first lamb born in early January and births continuing through May. We
detected lambs born to all 14 of the radiocollared ewes, and to 10 out of 13
of the uncollared ewes. Only 3 mature ewes (out of a total of 27) that could
have had lambs that were not detected with lambs; thus, minimum production
was 89%. Of the 14 surviving lambs, 9 are female and 5 are male.
We captured and radiocollared 14 lambs during the spring field season either
by approaching the sheep on foot or by helicopter. Seven of the 14
radiocollared lambs died. Three lambs were killed by cougars, 2 by golden
eagles (Aquila chrysaetos), 1 by an unknown predator, 1 due to
trauma/disease (pneumonia), 1 due to trauma, and 2 due to unknown causes. Of
the 24 lambs detected, 14 (58%) remain alive, yielding a lamb:ewe ratio of
48:100.
We detected 3 adult sheep mortalities. Two uncollared adult rams were killed
by a radiocollared adult male cougar, and an adult ewe apparently died from
an accidental fall. Of the 28 known adult mortalities of the herd since
release in 1995, 78% (22) are attributed to cougar kills.
We continued to monitor 2 radiocollared adult male cougars and 1 adult female
cougar captured in previous years. The female died of natural causes. One
male ranged in and out of bighorn habitat from the northern Caballo Mountains
(south of the FCM) to the Rio Grande River and to the north of the FCM. He
was responsible for the 2 uncollared adult ram mortalities. The other male
cougar ranged to the south of the FCM and around the Caballo Mountains and
did not enter bighorn habitat during the field season. He was killed by
Wildlife Services in July in response to depredation complaints. We captured
and collared 3 additional cougars (adult male, subadult male, and an adult
female) in 2001. The adult male cougar ranged predominantly to the north of
the FCM in the bosque of the Rio Grande, but entered bighorn habitat on 2
occasions. We tracked the sub-adult male cougar throughout the FCM and Caballo
Mountains. The current known (collared and uncollared) cougar population in
the study area consists of 2 adult males, a subadult male, and an adult
female.
Huemul (Hippocamelus bisulcus) – La
Primavera Ranch, Argentina, South America
Huemul are one of the most endangered mammals in the southern cone of South
America. There are probably <1,000 of these Andean Mountain deer remaining in the wild in Argentina and Chile. Beginning in 1999 we provided funding for a cooperative project with the Wildlife Conservation Society on huemul conservation. The Society is working with local biologists and managers to assess the conservation needs of huemul and determine how to implement these. We are also working to assess if Turner Properties in Argentina have a role to play in huemul conservation. During 2001 we cosponsored and participated in a huemul conservation workshop in Argentina and helped initiate a national plan for huemul conservation. We visited field sites of our cooperative huemul project.>
Rio Grande River Riparian Restoration –
Armendaris Ranch, New Mexico
Our goal is to restore a native cottonwood bosque on up to 1,000 acres of Rio
Grande riparian habitat now dominated by a salt cedar (Tamarix parviflora)
monoculture. During 2001 we completed clearing and burning slash on 220 acres
of the treatment area, and developed a topographic map (in collaboration with
Natural Resources Conservation Service) in anticipation of constructing a
water management system. Additionally, our offer was accepted to purchase 210
acre-feet of water rights. We are currently in the process of applying to the
State Engineers Office in New Mexico to transfer the water right to our
restoration area, where it will be used in part to simulate historical
riparian flooding in attempt to stimulate regeneration of native plants. A
portion of the restoration area will also be used to provide migratory
waterfowl, sandhill cranes (Grus canadensis), and shorebirds resting
and feeding areas through wetland development. Federal candidate or listed
species that will benefit from these efforts include the southwestern willow
flycatcher (Empidonax traillii extimus) and yellow-billed cuckoo (Coccyzus
americanus). A secondary benefit of the water transfer (from upstream to
downstream) is that the water will be left in the middle section of the river
for a longer time, benefiting the endangered Rio Grande silvery minnow (Hybognathus
amarus).
Rio Grande Cutthroat Trout (Oncorhynchus
clarki virginalis) Restoration – Vermejo Park and Ladder Ranches, New
Mexico
We built a fish migration barrier on Costilla Creek, Vermejo Park Ranch, in
late 2000 in anticipation of restoring - by non-native fish removal and restocking
- native trout in approximately 7.5 miles of the upper Costilla watershed (in
the Rio Grande drainage). Because the project is a collaborative effort with
New Mexico Department of Game and Fish, and the Colorado Division of
Wildlife, we completed and signed a Memorandum of Understanding in mid-2001
as a blueprint for the restoration, as well as demonstrating the strong
commitment to cutthroat trout restoration by all parties involved. During
August 2001, we collected additional baseline population data to evaluate
potential post-treatment population size (e.g., minimum population size
criteria) and lay the groundwork for future research on demographics of
isolated, high-elevation trout populations and their conservation. Due to
difficulties in completing the environmental assessment for the project, we
postponed the scheduled renovation until July of 2002. However, because of
the delay, we decided to expand the project area to include an additional 6.5
miles of perennial stream in the Costilla watershed, as well as 4 small
lakes, further increasing the odds of a successful project and the potential
to support a large, viable population of Rio Grande cutthroat trout.
Our goal since 1997 has been to restore Rio Grande cutthroat trout, and
preserve Rio Grande suckers (Catostomus plebeius) and chubs (Gila pandora) in
Las Animas Creek on the Ladder Ranch in southern New Mexico. After viability
studies and baseline surveys, efforts to move forward with the restoration
were frustrated by private land issues along the stream corridor. However,
the visibility and significance of this project has increased with the recent
decision by the US Fish and Wildlife Service to perform an additional status
review on which a listing decision for the species will be based. In
mid-2001, after we made several unsuccessful attempts to convince an
intervening landowner as to the conservation merits of the project, and
underscoring our own commitment to the project, we purchased the remaining
segment of Las Animas Creek not controlled either by the US Forest Service or
the Ladder Ranch. Additionally in 2001, we developed a draft environmental
assessment regarding the project, as well as a draft Memorandum of
Understanding outlining the responsibilities of all parties involved, collected
baseline population data, and conducted disease testing on the current
salmonid population. We will construct a fish migration barrier on the Ladder
Ranch in early 2002, with assistance from Trout Unlimited and the US Fish and
Wildlife Service, and chemical renovation of the watershed is anticipated in
late 2002.
Chiricahua Leopard Frog (Rana
chiricahuensis) Conservation – Ladder Ranch, New Mexico
The Ladder Ranch currently supports one of the last remaining New Mexican
populations of the Chiricahua leopard frog – a species proposed as threatened
by the US Fish and Wildlife Service. In 2001 the Ladder Ranch commissioned a
ranch-wide baseline survey to better understand the current status of this
species and its habitat on the property. Additionally, we initiated
development of a conservation agreement with the US Fish and Wildlife Service
(its final form will depend on the final listing decision – e.g., Safe Harbor,
Candidate Conservation Agreement), precipitated by a July, 2001 meeting with
biologists from the Fish and Wildlife Service and the State of New Mexico
regarding the species. This agreement will outline future management,
restoration, and propagation of Chiricahua leopard frogs on the Ladder Ranch.
Westslope Cutthroat Trout (Oncorhynchus
clarki lewisi) Restoration – Flying D Ranch, Montana
The legality of renovating a watershed under state and federal water quality
guidelines/statues for purposes of conserving of a native species continues
to be challenged by a group opposed to our proposed restoration of westslope
cutthroat trout to Cherry Creek, located on the Flying D Ranch in
southwestern Montana. While Montana Fish Wildlife and Parks, the Forest
Service, and we remain fully committed to completing the proposed project
that would replace non-native salmonids in approximately 70 miles of the
stream with the salmonid native to this area of Montana, renovation of the
stream was again delayed in 2001. However, in cooperation with biologists
from these organizations and agencies, as well as other research
institutions, we continued to collect baseline data in 2001 that will help
guide the restoration effort and set the foundation for future research on
restored cutthroat trout populations and their conservation.
Aplomado Falcon (Falco femoralis septentrionalis)
Restoration – Armendaris Ranch, New Mexico
Since 1998 we have been working to restore native Aplomado Falcons to the
Armendaris Ranch and southern New Mexico. The project is a collaborative
effort among TESF, The Peregrine Fund, and the US Fish and Wildlife Service.
During 2001 an umbrella Safe Harbor Agreement was pursued by The Peregrine
Fund in order to introduce captive-reared falcons on privates lands in
southern New Mexico. The significance of this restoration initiative was
underscored in 2001 when a nesting pair of Aplomado Falcons was located in
New Mexico for the first time since 1952. The USFWS is currently completing
the Safe Harbor Agreement and section 7 consultations with the Department of
Defense and the Bureau of Land Management to determine management guidelines
for federal land inhabited by falcons. In anticipation of Aplomado Falcon
releases and research in the summer of 2002, we began a long-term monitoring
program of grassland bird prey abundance to complement the current Chihuahuan
grassland range monitoring study at the Armendaris Ranch.
California Condor (Gymnogyps californicus)
Restoration – Ladder Ranch, New Mexico
Our goal since 1997 has been to reintroduce California Condors on the Ladder
Ranch, New Mexico. The 1996 California Condor recovery plan calls for the
establishment of 2 separate populations of California Condors, 1 in
California and 1 in Arizona, each numbering 150 individuals. We initiated an
environmental assessment for the expansion of the current 10j experimental,
non-essential condor recovery area in Arizona to include the entire state of
Arizona, New Mexico, and parts of Colorado and Utah. In order to increase the
odds of establishing a viable population of condors in the southwest, we
agreed to build a captive-rearing and release program on the Ladder Ranch
that will house 4-8 pairs of breeding adults and their chicks during the life
of the project. We propose to release juvenile condors (1 year of age) from
the facility and continue to supplementally feed them on the ranch. We will
begin facility construction in 2002 and anticipate starting releases in the
spring of 2004. Because the project is a collaborative effort among the TESF,
The Zoological Society of San Diego, and the US Fish and Wildlife Service, we
drafted a Memorandum of Understanding and a 10-year budget in 2001 to outline
details for the restoration. We collected baseline population data on pilot
species such as golden eagles to evaluate survivorship, distribution, habitat
use, and reproductive success in order to anticipate conservation concerns
specific to large scavenging birds. In addition, we initiated data
collections of tissues from both herbivores and carnivores to establish
baselines lead levels to minimize the risk of lead related condor mortalities
on and near the ranch.
Northern Rockies Grizzly Bear (Ursus arctos)
Recovery
We provided support and funding to 2 undergraduate students at Montana State
University to conduct hair sampling to determine if grizzlies are present in
the Tobacco Root Mountains of southwestern Montana. The Tobacco Roots have
good potential to provide connectivity between bears in the Greater
Yellowstone Ecosystem and the Northern Continental Divide Ecosystem (see
American Wildlands website link). The students collected 152 hair samples and
78 scats from 23 baited cells distributed throughout the range in 2000. They
concluded that based on results of genotyping the samples at the University
of Idaho that grizzlies are currently not present in the Tobacco Roots.
We met with the USFWS and others in 2001 to assess where we could best
provide support for grizzly bear recovery in the northern Rockies. We will
begin fieldwork in 2002 in partnership with the USFWS to monitor grizzlies in
northwest and southwest Montana to examine population expansion and
connectivity (see American Wildlands and Interagency Grizzly Bear Committee websites).
Blowout penstomen (Penstomen haydenii)
– Spikebox Ranch, Nebraska
Blowout penstomen is a federally listed endangered plant. It is the rarest
native plant in the Great Plains and only grows in the Nebraska Sandhills. We
are cooperating with the University of Nebraska, the Nebraska Department of
Agriculture, and the Nebraska Environmental Trust to restore this species by
propagating plants in greenhouses and replanting them in the wild.
Disturbance by bison helps ensure the persistence of blowouts that are
important for penstomen, and thus Turner properties play a key role in
restoration. The University of Nebraska planted about 2,000 seedlings in
spring of 2000. The survival rate of seedlings has averaged 20%. At current
rates of success, within 3-4 more years, we will likely be able to remove
this species from the endangered species list. By the end of restoration
efforts, Turner Properties in Nebraska could contain 1/3 of the world’s
population of penstomen.
Migratory Pollinator Campaign
We provide cornerstone financial support and biologists to assist with
campaign design and implementation of a bi-national campaign to conserve
migratory pollinators and their 1,500-mile migration corridor that stretches
from the southwestern U.S. to southern Mexico. The campaign is administered
by the Pollinator Conservation Consortium at the Arizona-Sonora Desert
Museum. The campaign focuses on 4 imperiled pollinators (including the endangered
lesser long-nosed bat [Leptonycteris curasoae], white-winged dove [Zenaida
asiatica], rufous hummingbird [Selasphorus rufus] and monarch butterfly
[Denaus plexippus]) and the habitats on which they depend at 10 critical
staging sites along the corridor. The collective goals of the 5 year project
are to: 1) apply the best science, the most innovative community education
techniques, and the most effective on the ground conservation management
practices to protect and restore the bi-national nectar corridors required by
threatened pollinators, 2) ensure and document measurable recovery of
populations of the 4 pollinators from their summering grounds in the
Intermountain West to their wintering grounds in western Mexico, and 3)
demonstrate how a bi-national multi-cultural team of researchers, educators
and land managers can be integrated into an effective collaboration involving
local communities along corridors to ensure the continued benefits of
pollination services to wildlands and to agricultural plants. In
characterizing the diversity associated with 48 pollinator habitats in the
northern third or our corridor study area, the campaign identified 1 area of
such richness that Secretary Babbitt had President Clinton decree a 200,000
acre Ironwood Forest National Monument there. In addition, the campaign
obtained valuable data on pollinator movements at 14 stopover sites and
sampled pollen from 450 plants to match with pollen collected off migrants.
The campaign produced learning materials and trained over 100 teachers to
reach over 5,000 students about pollinators and plants in 3 states. The
campaign got 2 of the 4 species listed in the top 10 species targeted for
conservation by the trilateral commissions migratory wildlife initiative. See
our link to the Desert Museum for more details.
Mexican Spotted Owls (Strix occidentalis
ludcida) – Vermejo Park Ranch, New Mexico
Mexican spotted owls are a federally listed threatened species whose range
historically included the Vermejo Park Ranch and the surrounding area.
Therefore, we commissioned a white paper in 2001 to assess the suitability of
Vermejo for spotted owls. Current forest conditions on the ranch did not
resemble typical spotted owl habitat, but we cannot conclude that conditions
are unsuitable. More survey work is recommended before reintroductions are
considered further.
Pollinator Biodiversity Assessment – Avalon
Plantation
Our goal with the assessment of pollinator biodiversity at Avalon is to
develop baseline data on pollinator diversity and population sizes for
ecological monitoring and natural resource management; and to understand how
variation in natural and managed fire regime affects pollinators, plants, and
plant-pollinators complexes. We are researching the following questions:
1) what is the number of individuals and their biomass
2) what is the location and range that these pollinators
3) when do these pollinators appear and for how long.
We will consider restoration of pollinators if baseline studies indicate an
impoverished guild.
During 2000, we continued sampling for the native pollinator biodiversity
assessments through the use of pan traps, sweep sampling, flight intercept
traps, and trap nests. Furthermore, we added trap nest sampling stations to a
longleaf pine/wiregrass restoration site as part of a long-term effort to
assess pollinator recovery of the area. Under the auspices of Dr. Stephen
Buchhann (The Bee Works, Tucson, AZ) we initiated a research project to
examine the response of twig nesting and ground nesting bees to prescribed
fire. During 2001, we continued sampling for the native pollinator biodiversity
assessments. We experienced decreased bee activity due to abnormally cold
spring temperature. In an effort to increase the sampling period, we flew
over the property to determine the location of previously know flowering
sites. Our prescribed fire research project was put on hold in 2001 due to
extreme fire conditions that existed in our area.
Longleaf pine (Pinus palustris)
/wiregrass (Aristida stricta) Restoration - Avalon Plantation
The loss, fragmentation, and degradation of natural habitats are increasingly
threatening to the southeast’s wondrous biodiversity. In response to this
crisis, we initiated numerous projects in 2000 that emphasize native species
conservation and habitat restoration. For example, on 2,000 acres of previous
pastureland, we planted approximately 750,000 longleaf seedlings.
Furthermore, over time we will begin to incorporate wiregrass plugs into the
area. Our goal is to restore the area into a mature and viable
longleaf/wiregrass ecosystem. We have established numerous wiregrass plots
throughout the property, which are being used as our donor seed source. In
the process, the native plant communities within the plots are thriving due
to our growing season prescribed burns. Without doubt, prescribed fire is the
best management tool we can use to maintain, enhance, and restore habitats.
During 2001, we continued with our longleaf/wiregrass restoration. Moreover,
we are currently in the process of restoring 4,500 acres of previously
industrial timberland to a viable mature pine ecosystem. We have begun to
remove the invasive hardwood species and thinning the pine canopy, which will
allow sunlight to stimulate the herbaceous understory. Restoration of the
understory is critical as fuel source for our prescribed burns. In time, the
area will be under-planted with longleaf and wiregrass.
Southern fox squirrel (Sciurus niger niger)
restoration – St. Phillips Island, South Carolina
Southern fox squirrels have disappeared from several areas where they were
once common in the southeast, including St. Phillips Island. Therefore, we
cooperated with the University of Georgia to translocate 24 squirrels to the
island during 1999-2000. Survival rates (0.71) for squirrels translocated to
the island were similar to survival rates elsewhere along the South Carolina
coast. Reproduction was documented, and squirrels are now seen regularly on
the island. Based on this, habitat appears to be suitable for squirrels, and
the reintroduction appears to be a success. Additionally, the project
demonstrated that translocation is a useful tool to assist squirrel
restoration throughout the southeast.
Wolverine (Gulo gulo) conservation
We developed a cooperative agreement with Hornocker Wildlife Institute
to assist with their wolverine research project in the Madison Mountains,
including the Flying D Ranch.
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