Showing posts with label County Inventory. Show all posts
Showing posts with label County Inventory. Show all posts

Thursday, September 17, 2015

Catching Colorado River Cutthroat Trout Near Trapper's Lake

This summer CNHP zoologist John Sovell conducted surveys for wildlife species across Garfield County, Colorado. In July, Sovell's surveys included fishing for Colorado River cutthroat trout. His field work is part of a larger effort led by Delia Malone (CNHP ecologist) to document locations of rare plant and animal species in the county, as well as noxious weed locations. Sovell and Malone will provide information from their county-wide biological surveys to Garfield County to aid in planning and natural resource management.

Colorado River cutthroat trout are one of dozens of rare species that occur in Garfield County, including Colorado hookless cactus and Debeque phacelia. Both of these rare plants are listed as Threatened under the Endangered Species Act.

A downed log rests in a pool occupied by Colorado River cutthroat trout on the North Fork of the White River near Trapper's Lake. Colorado River cutthroat trout rely on large woody debris like this tree to help form pools, store spawning gravels, and provide refuge from predators. 
Sovell updated information on Colorado River cutthroat trout at four locations in Garfield County, including the North Fork of the White River where it empties into Trapper's Lake. These brilliantly colored fish are one of three extant subspecies of trout native to Colorado. Recent genetic and morphological studies suggest that there are two extant lineages of cutthroat trout on Colorado's Western Slope. Cutthroat trout in the White River Basin are part of what is known as the Blue Lineage. For more information on Colorado River cutthroat trout, check out the newly updated State Wildlife Action Plan.

John Sovell, CNHP zoologist, catches a Colorado River cutthroat trout as part of  the 2015 Garfield County Survey of Critical Biological Resources. 


Tuesday, June 19, 2012

New Report: Survey of Critical Biological Resources Jefferson County

In 2010, Jefferson County contracted with CNHP to re-survey for critical biological resources in the county. We had performed an initial biological inventory for Jefferson County in 1993. Changing landscapes, continued urban population growth, and the fact that no one survey can be fully comprehensive prompted our return in 2010-2011.

The purpose of the project was to provide scientific data on biological resources for land managers, planners, and the citizens of Jefferson County for conducting proactive landscape planning.

The final report, which is now on our reports page, is intended to be a tool for managing lands that support rare, imperiled and/or sensitive plants, animals, and significant plant habitats, particularly wetlands. The information in this report can be utilized for assessing candidate conservation areas, their acquisition values, and to assist with meeting the goals identified in the update to Jefferson County's 2008 Open Space Master Plan. This project provides data that will allow staff to make informed determinations regarding land management to ensure Jefferson County resource values are protected and sustained.

Friday, September 30, 2011

CNHP work in Teller County in the news

CNHP Wetland Ecologist Denise Culver is quoted in a recent article in the Pikes Peak Courier View regarding our recently completed Teller County survey of critical biological resources and how it has benefited local landowners. The article also notes how the survey was a great learning experience for several students from Colorado College in Colorado Springs, who participated in the fieldwork.

Denise gave a presentation on the project and its findings to the Teller County Planning Commission this past Tuesday.

For more information about the project, see our past posts:

Saturday, September 3, 2011

What I did on my Summer Field Season - Part 2

by Amber Provinzano
(read Part 1 of Amber’s report, in case you missed it)

CNHP Botany Team leader Jill Handwerk joined Pam and me in the field a for a few days to see the endangered Colorado butterfly plant (Gaura neomexicana ssp. coloradensis). We also hiked around a few parks and ranches, making counts of the roundtip twinpod (Physaria vitulifera), and wondering how rare plants can survive in habitat that has been so changed by human presence.

Gaura neomexicana ssp. coloradensis. Photo by Jill Handwerk

Physaria vitulifera, with a pen for scale. Photo by Pam Smith

Big bluestem (Andropogon gerardii) in flower, an indication of healthy grasslands. Photo by Pam Smith


Wetland Work

Later in the season, I participated in a field session of the National Wetland Condition Assessment that CNHP is working on for the U.S. Environmental Protection Agency. Together with field botanists Lindsey Washkoviak and Adam Skadsen, and soil scientist Alan Walters, I collected vegetation data for randomly selected wetlands in Colorado. The areas near Leadville and Nathrop, Colorado were beautiful. Camping on Turquoise Lake was lovely, minus the nightly storms that raged across the Continental Divide. I visited my first fen, and realized that while assessing the nation’s waters is important, I’m not so sure trampling over delicate and precious ecosystems is good for them. Another first for me: seeing pikas (Ochotona princeps) at one of the sites we sampled. Though the squeaking makes them sound like dog toys, they are exceptionally cute.

American Pika (Ochotona princeps) looking alarmed at having been called a 'dog toy.' Photo by Amber Provinzano

Columbines among the talus. Photo by Amber Provinzano

Lake Turquoise at sunrise – Colorado’s two highest peaks, Mt. Elbert (14,440 ft) on the left and Mt. Massive (14,428 ft) on the right. Photo by Amber Provinzano


This summer was incredible. I am very fortunate to have received these opportunities to travel this great state and see some awesome places, plants, and animals while learning and working with remarkable people. I would like to thank everyone at CNHP, especially those who I worked closely with in the field and at the office, for providing me with the experience, knowledge, and wisdom to do good in the world.

Happy Trails!

Wednesday, August 31, 2011

What I did on my Summer Field Season - Part 1

by Amber Provinzano

The summer is over and I am out of the field and back in the classroom for my final semester as an undergraduate student. I’m continuing to work for CNHP in the same data processor position I had last year. Though the time in the field is over, the experience, lessons and memories are far from forgotten. As I’ve said before and can say again after more experience, the field season is a great component of working in natural resources and I am happy with my decision to pursue a degree in wildlife biology.

My 2011 field season experience kicked off at Willhite Ranch in southeastern Colorado with Renée Rondeau, as previously reported.

Mesa Verde and Schmoll’s Milkvetch

In June, along with CNHP’s director, Dave Anderson, and CNHP field botanist Bernadette Kuhn, I ventured to Mesa Verde National Park for 10 days to assist with setting up and revisiting permanent plots used in monitoring the rare Schmoll’s Milkvetch (Astragalus schmolliae), recently made a Candidate Species for listing under the Endangered Species Act. The park’s Natural Resource staff was wonderful: they were eager to help us, providing a few supplies but more importantly extra people on the ground to get the work done.

Amber with a fruiting Astragalus schmolliae (Schmoll’s Milkvetch) and encroaching weeds in the background.

A most memorable experience was the hike to Park Mesa with veg crew member Kyle Doherty to reevaluate a demography plot for the Schmoll’s Milkvetch originally set up in 2001 by Dave Anderson. Kyle and I made our way down and back up the walls of Soda Canyon, catching glimpses of cliff dwellings, and across Park Mesa where the ancient pinyon-juniper forests meet the weed-infested fields now growing on the site of where large fires occurred in 2002.

Small dwelling, we guessed it was used to store food.

A large dwelling in the side of the canyon. Blends in, doesn't it?


The photo everyone takes of Cliff Palace at Mesa Verde National Park.

Short-Horned Lizard (Phrynosoma douglassi)

Despite living in Colorado my entire life, I had yet to see as much of the state as I did on the 10 hour drive to Mesa Verde (we took the scenic route, at my request). And even with 9-12+ hour work days I was able to break away from work for an hour to take the Cliff Palace tour. I am very thankful to have been able to join Dave and Bernadette in this project.


Rare Plants in Jefferson County
CNHP field botanist Pam Smith recruited me to assist her in surveying Jefferson County wetlands for a few weeks in July and August. On my first day out I was lucky enough to see Colorado’s rarest orchid, Malaxis brachypoda (white adder’s-mouth). We also hiked up to see Telesonix jamesii (James’ telesonix), seeing other rare plants tracked by CNHP along the way. Pam also took me to several Jefferson County Open Space parks, and I will definitely be going back for fun. Colorado residents, especially those in and near Jefferson County, should take advantage of these gorgeous natural areas set aside by the county for our enjoyment.

Malaxis brachypoda. Photo by Scotty Smith.

 Telesonix jamesii. Photo by Pam Smith.

From the left, orchid expert and CNHP volunteer Denise Wilson, Amber Provinzano, and Pam Smith at a Telesonix jamesii occurrence. Photo by Scotty Smith.

 Rub-a-dub-dub, Pam in a tub. While it's a cute photo-op, who leaves a bathtub in the woods? Photo by Amber Provinzano.

 My new home! (Assuming the bears don't come back. Oh wait, maybe that was their bathtub.) Photo by Pam Smith.

 To be continued...





 

Tuesday, May 24, 2011

Two new county survey reports

CNHP staff have completed their Survey of Critical Biological Resources of Teller County, Colorado, and the report is now on our Documents and Reports page.

Some highlights of the survey include:
  • New locations for one of the world's rarest plants, Pikes Peak spring parsley (Oreoxis humilus).
  • One of the best known occurrence of the montane population of the Gunnison prairie dog (Cynomys gunnisoni).
  • Re-discovery of a 1902 sighting of the spiny-spored quillwort (Isoetes setacea ssp. muricata).

For a concise and attractive summary of the report, see our Natural Treasures of Teller County brochure.


 We have also just finished our report on the Survey of Critical Wetlands of Gilpin County, Colorado, also available on our Documents and Reports page.

The wetland resources of Gilpin County are truly unique with an amazing richness of rare fauna and flora well worth preserving for future generations. The diversity of species and plant communities that range from montane riparian woodlands to alpine lakes substantiate the important contribution of wetlands in the County to the biodiversity of both Colorado and the nation. Overall, the concentration and quality of imperiled species and habitats attest to the fact that conservation efforts in Gilpin County will have both statewide and global significance.

Wednesday, March 16, 2011

Southeast Colorado Canyon Country Views

On February 28th, CNHP Director Dave Anderson, Ecologist/ Conservation Planner Renée Rondeau, and FWCB Department Head Ken Wilson flew with Steve Paul, a volunteer pilot with Lighthawk, a non-profit group that volunteers their flight services to conservation groups throughout the U.S.

Steve, Dave, and Ken getting ready to fly.

CNHP has been working in Southeast Colorado since 2007 when we conducted a biological inventory of the area. The results of that inventory have kept CNHP involved with the ranching community as they develop management and conservation plans to maintain biological integrity while making a viable living from ranching. Southeast Colorado provides a dramatic contrast to most of the rest of Colorado’s eastern plains, which are dominated by tilled agricultural fields. The majority of the landscape is privately owned, with with little to no formal protection, and it supports a rich and diverse flora and fauna that merits conservation. The core of the area that we flew over was the canyon country of the Purgatoire River and Chacuaco Canyon, where perennial streams support native fishes and do not have any exotic species.

We first flew south along the mountain front from Broomfield – getting great views of the interface between the prairie and the high peaks.

Pikes Peak overlooks the eastern plains.

Prairie fragmentation close to the Front Range was obvious from our 9,000 foot elevation, but as we moved out into the plains we flew over large unfragmented grassland landscapes with the occasional small river breaking up the scenery Although the grass is still dormant at this time of year, the large landscape really caught our attention.

 View of the Huerferno River

After about an hour we started seeing small white hills with juniper trees dotting the prairie. These shale barren hills are important Colorado rare plant habitat, where Oenothera harringtonii, Oonopsis foliosa var. monocephala, Lesquerella parviflora, Asclepias macrotis, and occasionally, Oxybaphus rotundifolius are found.

Shale barren habitat.

Soon the Purgatoire Canyon Country came into view. Even our pilot was surprised to find the “boring” prairie dissected by these red rock canyons. I knew we had found something exciting when Steve Paul took out his camera and started flying hands-free while taking pictures! Comments about the astounding scenery, the quality of the lands, the beauty of the rocks, and the abundant mesas were common throughout this part of the flight. This rapid view of such an expansive and little known landscape gave all of us an appreciation of the uniqueness of this area. Surrounded by shortgrass prairie, these canyonlands are like an oasis for many large mammal species that we seldom associate with grasslands, such as black bear, big horn sheep, and elk.



Canyon views.

The return flight was quite an experience, given the turbulent air that is often associated with the Front Range. Can you say BUMPY? Dave and Renée were very grateful to get their feet back on stable ground but Steve Paul and Ken Wilson hardly took note of the rough flight. We are grateful to have had yet another marvelous opportunity to work with Lighthawk, whose generous assistance has provided CNHP and FWCB with a greater appreciation for the conservation value of southeast Colorado.

 Steve & RenĂ©e - back on the ground.

Tuesday, October 5, 2010

Teller for Tomorrow forum October 16

CNHP ecologists Denise Culver and Allison Shaw will be giving a presentation about their recent survey of critical biological resources in Teller County at the Teller for Tomorrow forum. Hosted by the Rural Land Preservation Group in Teller County, this free, half day forum will be held at the John Wesley Ranch Retreat Center at 21285 State Highway 67, on Saturday, October 16. For more information about the forum, see the flier for the event (pdf).

Take advantage of this free opportunity to learn how you can help protect native habitats, preserve working ranches and farms, and safeguard the vistas that make Teller County special. And while you are there, take a moment to say hello to Denise and Allison and ask them about their work in Teller County and the Colorado Natural Heritage Program. We hope to see you there!

Thursday, September 23, 2010

Site profile: Big Creek Lakes, Jackson County

B2: Very High Biodiversity Significance

Big Creek Lakes

Big Creek Lakes was visited as part of the North Platte Watershed inventory in 2009. The area lies on the east flank of the Park Range, and encompasses the Big Creek Lakes as well as the North Fork of the North Platte River and its tributaries in the area. Here, extensive deposits of glacial drift from the Pinedale and Bull Lake glaciations shroud the foothills of the Park Range.

This large site includes an unusually dense concentration of glacial kettle ponds and associated wetlands. Kettle ponds are formed by the melting of stranded blocks of ice left behind by retreating glaciers. The Big Creek Lakes area is one of the most extensive kettle pond areas in Colorado. Open water areas of kettle ponds are often dominated by water lilies (Nuphar lutea ssp. polysepala), water smartweed, (Persicaria amphibia), pondweed (Potamogeton natans), buckbean (Menyanthes trifoliata), and other species, while margins may have extensive swaths of sedge dominated meadows and floating mats.

Menyanthes trifoliata
Menyanthes trifoliata (buckbean) showing off its pretty flowers.

a quaking fen
A still picture doesn't really get at the essence of a quaking fen. Go watch the video.

This site holds documented occurrences of three rare amphibians (wood frog, northern leopard frog, and boreal toad), and a number of state rare plants, including slender cottongrass (Eriophorum gracile, G5/S2), bristly stalk sedge (Carex leptalea, G5/S1), livid sedge (Carex livida, G5/S1), roundleaf sundew (Drosera rotundifolia, G5/S2), lesser bladderwort (Utricularia minor, G5/S2), mud sedge (Carex limosa, G5/S2), slender sedge (Carex lasiocarpa, G5/S1), and marsh cinquefoil (Comarum palustre, G5/S1S2).

Comarum palustre
Comarum palustre, the marsh cinquefoil

Tuesday, July 27, 2010

Site profile: Parachute Creek, Garfield County

B2: Very High Biodiversity Significance
Parachute Creek

This site was visited in 2000 as part of the Garfield County Inventory. This large site encompasses the Parachute Creek drainage as it descends from the top of the Roan Plateau toward the Colorado River west of Rifle. Here Parachute Creek and its tributaries have excavated a geologic section in sedimentary strata of the Tertiary Green River and Wasatch formations. Each tributary makes a dramatic plunge off the Roan Plateau over 100 to 200 foot shale cliffs.

Thalictrum heliophilum
Thalictrum heliophilum basking in the sun in its shaley habitat

The site supports numerous occurrences of several rare plants, including Roan Cliffs blazing star (Mentzelia rhizomata, G2/S2), Utah fescue (Argillochloa dasyclada, G3/S3), and sun-loving meadow rue (Thalictrum heliophilum, G3/S3), as well as an excellent example of a hanging garden of the type characteristic of the Utah High Plateau, dominated by hanging garden sullivantia (Sullivantia hapemanii var. purpusii).

Mentzelia rhizomata
Mentzelia rhizomata - the Roan Cliffs blazing star

South-facing slopes are dominated by sagebrush (Artemisia tridentata), serviceberry (Amelanchier), and mountain spray (Holodiscus dumosus), while Douglas-fir / spruce - fir (Psuedotsuga menziesii - Picea) forests cover north-facing slopes. The more gentle slopes dropping off the Roan Plateau support high quality grasslands and sagebrush shrublands. Although the canyon bottom has been heavily impacted by gas well development, there is lush riparian vegetation remaining in portions of the canyon, including examples of the globally vulnerable (G3/S2) box elder / chokecherry (Acer negundo / Prunus virginiana) montane riparian deciduous forest and the globally vulnerable (G3/S3) narrowleaf cottonwood / skunkbrush (Populus angustifolia / Rhus trilobata) riparian forest.

Monday, June 28, 2010

CNHP in the Pikes Peak Courier View

Teller County's local paper, the Pikes Peak Courier View has a great article about our Teller County survey of critical biological resources happening right now. Teller County is the 34th major inventory project  since CNHP began these projects in 1992. This kind of inventory work is what forms the core of our mission to build and maintain Colorado's most comprehensive biodiversity database.

Be sure to check out this excellent summary of the project with pictures of and quotes from CNHP ecologists Denise Culver and Allison Shaw. These two, along with a number of other CNHP employees, are hard at work surveying the rare and imperiled animals, plants, and natural communities that call Teller County home.

Thursday, May 27, 2010

Site profile: Mee Canyon, Mesa County

B2: Very High Biodiversity Significance
Mee Canyon, Colorado

This site was visited in 2002 as part of the Mesa County Wetland Inventory. In western Colorado's Black Ridge Canyons Wilderness, this scenic redrock canyon contains an enormous cavern cut by a meander of a small stream which drains to the Colorado River. The canyon is rimmed with red Entrada sandstone, and its steep sides are formed in the Kayenta and Wingate formations.

Above the canyon, the mesas supports an excellent example of the Utah juniper/saline wildrye (Juniperus osteosperma/Leymus salinus) community, as well as characteristic stands of black sage (Artemisia novum), Indian ricegrass (Achnatherum hymenoides) and needle and thread grass (Hesperostipa sp.). Dry slopes on the side of the canyon have scattered Utah juniper (Juniperus osteosperma), Fremont barberry (Mahonia fremontii), and cliffrose (Cowania mexicana).

standing in the canyon
Sandstone walls oozing moisture that supports rare species

The canyon bottom is ungrazed, and the difficulty of access to the upper reaches has probably protected it from human impacts. In the narrow riparian area at the bottom of the canyon, the stream banks are covered by dense growth of scouring rushes (Hippochaete sp.), with giant helleborine orchids (Epipactis gigantea) and scattered box elders (Acer negundo) growing among them. Not far from the cavern is a grotto with seeping walls that supports a good example of the globally imperiled hanging garden community (Aquilegia micrantha-Mimulus eastwoodiae), characterized by the yellow Mancos columbine. The state imperiled canyon tree frog (Hyla arenicolor) also occurs here, close to the northern limit of its distribution.

Aquilegia micrantha
The Mancos columbine (Aquilegia micrantha)

Hyla arenicolor
A canyon treefrog (Hyla arenicolor)

Tuesday, May 11, 2010

Site profile: Chico Basin Shortgrass Prairie, Pueblo County

B2: Very High Biodiversity Significance
Chico Basin


This site was visited in 2002 as part of the Pueblo County Inventory. The site encompasses over 250 square miles of shortgrass prairie in northern Pueblo and southern El Paso counties. Here, extensive tracts of native blue grama grass (Bouteloua gracilis) prairie on open flats or gently rolling terrain are home to numerous large towns of the black-tailed prairie dog (Cynomys ludovicianus).

Cynomys ludovicianus
A black-tailed prairie dog checks out the scene from its burrow.

Burrowing Owl (Athene cunicularia) are commonly seen within these prairie dog colonies, and the site also supports many breeding locations for the Mountain Plover (Charadrius montanus). These declining shortgrass prairie birds typically use areas with low vegetation and a high percentage of bare ground such as is found around prairie dog towns. Other shortgrass prairie wildlife species documented from the site include swift fox (Vulpes velox), McCown's Longspur (Calcarius mccownii), Long-billed Curlew (Numenius americanus), and massasagua (Sistrurus catenatus).

Charadrius montanus
 Mountain Plovers in the kind of habitat that they love.

Thursday, April 29, 2010

Site profile: North St. Vrain, Boulder County

B2: Very High Biodiversity Significance

North Saint Vrain Potential Conservation Area

This site was visited in 2007 as part of the Boulder County Inventory. The North St. Vrain in northwestern Boulder County east of Allenspark is one of the few remaining roadless canyons along the Front Range. Here the North St. Vrain Creek and its tributaries have carved deep, narrow canyons through the granite outcrops. The surrounding slopes support an extensive mosaic of ponderosa pine forest, shrublands, grassland openings, and cliffs and rock outcrops above the riparian corridors.

The ridgelines and rocky outcrops of the North St. Vrain site support one of the largest known concentrations of the globally rare Larimer aletes (Aletes humilis) in the world. This species is narrowly endemic to Silver Plume granite in the montane zone of the Colorado Front Range, where it thrives in the shallow, gravelly surface soils around rock outcrops. Other important elements within the site include the globally vulnerable wavy-leaf stickleaf (Nuttallia sinuata) and the globally imperiled (G2/S2) Rocky Mountain cinquefoil (Potentilla rupincola). In addition, the site contains excellent examples of montane shrublands and grasslands, as well as riparian forest, shrublands, and willow carrs.

Aletes humilis habitat
 Aletes humilis (low-growing plants in foreground) in its favorite habitat.

Tuesday, April 13, 2010

Site Profile: Mount Princeton, Chaffee County

B2: Very High Biodiversity Significance

Mount Princeton Potential Conservation Area

The site was visited in 2008 during the Chaffee County Inventory. With an elevation of 14,197 feet, Mount Princeton is one of over 50 Colorado summits known as "fourteeners", and is part of the southern extension of the Collegiate Peaks range in central Colorado. Together with neighboring Mount Shavano and Mount Antero, Mount Princeton has formed through erosion of a batholith (large igneous intrusion originating deep in the earth's crust) of middle Tertiary age (20-40 million years old).

krummholz pine
A krummholz bristlecone pine

The south-facing slopes of Mount Princeton support a good example of the bristlecone pine (Pinus aristata) forest that is found scattered throughout the Collegiate Peaks from 10,000-12,250 feet elevation, just below timberline, on moderate to steep slopes on south and east-facing aspects. The forest growing here is subject to difficult conditions, with desiccating winds, broadly fluctuating temperatures, and rocky soils. At the upper limit of the forest where conditions are harshest, trees grow in stunted "krummholz" form. Although they are only a few feet tall, these trees can be hundreds of years old.

Tuesday, April 6, 2010

Teller County survey of critical biological resources

CNHP, in partnership with the Coalition for the Upper South Platte (CUSP) and Teller County, has been awarded a grant from the Environmental Protection Agency (EPA) to survey critical biological resources in Teller County this summer. In addition to the EPA grant, Teller County was also awarded a Conservation Excellence grant from Great Outdoors Colorado, which they will use to further fund the survey work.

CNHP biologists, zoologists, and ecologists will be conducting inventories of rare species, wetlands, and other natural communities throughout the county starting this June. Teller County is at the intersection of four watersheds: Upper South Platte River, South Platte River Headwaters, Fountain Creek, and Upper Arkansas River. CNHP has surveyed all counties surrounding Teller, and we are excited to finally get the chance to fill in this gap in biodivserity knowledge.


A kick-off meeting will be held April 21 at the Carter Herbarium of Colorado College in Colorado Springs, in order to get input from partners and other interested parties about where the best places are to concentrate our surveys and how we can best collaborate with partners from CUSP, the Carter Herbarium, and the Royal Gorge Field Office of the Bureau of Land Management.

Tuesday, March 16, 2010

Site Profile: Troublesome Creek, Grand County

B1: Outstanding Biodiversity Significance


This site was visited during 2005 as part of the Grand County Inventory. Troublesome Creek joins the Colorado River east of Kremling. The site is dominated by the sandstones and siltstones of the Troublesome Formation, which are generally sparsely vegetated. These fine-textured, grayish-brown soils may not look like much, but are home to two Grand County endemic plant species that are Federally Listed as Endangered: Penland beardtongue (Penstemon penlandii) and Osterhout milkvetch (Astragalus osterhoutii), as well as the regional endemic dog parsley (Aletes nuttallii).

Astragalus osterhoutii
Osterhout milkvetch (Astragalus osterhoutii)

This site includes all known occurrences for Penland beardtongue. Due to the concentration of globally critically imperiled (G1/S1) plants, this site is of outstanding biodiversity value, in essence irreplaceable.

Penstemon penlandii
Penland beardtongue (Penstemon penlandii)

Tuesday, February 9, 2010

Site Profile: Trickle Mountain, Saguache County

B2: Very High Biodiversity Significance

Trickle Mountain

The Trickle Mountain site was identified during the 1997 Closed Basin Inventory in Saguache and Alamosa Counties. Here, a scenic landscape of mesas and small mountains dissected by short canyons supports a mosaic of montane woodlands and grasslands. In Colorado, this type of terrain is more typical of lower elevations to the west

The vegetation of the Trickle Mountain area reflects its unusual setting. The mesa tops are dominated by an arid mixed-grass grassland of ring muhly (Muhlenbergia filiculmis) and lichen. The higher elevations of Trickle mountain are covered by Bristle cone pine (Pinus aristata) with Arizona fescue (Festuca arizonica), while ponderosa pine (Pinus ponderosa) with Arizona fescue or grasslands of mountain muhly (Muhlenbergia montana), ring muhly, and Arizona fescue dominate the lower slopes. The valleys between the plateaus are mostly a winterfat/blue grama (Krascheninnikovia lanata/Bouteloua gracilis) short-grass shrub-steppe that provides good habitat for Gunnison prairie dogs (Cynomys gunnisoni gunnisoni). The site also supports populations of two Colorado endemic plants: Weber’s catseye (Cryptantha weberi) and rock-loving aletes (Neoparrya lithophila).