Berkas:Osterhout Milkvetch (5715872143).jpg
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Ringkasan
DeskripsiOsterhout Milkvetch (5715872143).jpg |
Osterhout milkvetch flowers are white and showy to attract pollinators. Photo credit: USFWS ........................................................................... BACKGROUND: The Osterhout milkvetch (Astragalus osterhoutii) and the Penland beardtongue (Penstemon penlandii) are both extremely rare plants endemic to barren white shale outcrops of the Niobrara Shale and Troublesome Formations in Grand County of northern Colorado. Both species are only found near the Town of Kremmling in “Middle Park,” a high elevation sagebrush park at 7,500 feet surrounded by various ranges of the Rocky Mountains in Grand County, Colorado. The Osterhout milkvetch, a member of the pea family (Fabaceae), is a slender-stemmed plant with elliptical leaves and creamy white flowers in clusters at the end of foot-long stalks. It was discovered in 1905 by one of Colorado’s pioneer botanists, George Osterhout. The species only grows on highly seleniferous (containing the element selenium) soils that accumulate in foliage and causes the plant to smell pungently of garlic. Only a small proportion of the many milkvetch species are known to accumulate this toxic chemical. Osterhout milkvetch is known from five small and scattered locations within an eight-mile radius, across an estimated 600 acres of habitat. The Penland beardtongue, a member of the plantain family (Plantaginaceae), was discovered much later than the Osterhout milkvetch. In 1986, two Colorado botanists, David Johnson and John Anderson, discovered the new species on a visit to an Osterhout milkvetch site along Troublesome Creek. The Penland beardtongue is a small plant with thin, needle-like leaves and bright blue to violet flowers. It is known only from a unique badland area along Troublesome Creek extending 4 miles north to south on an estimated 800 acres. In order to reproduce, this species requires pollination by native ground-dwelling, solitary bees in the genus Osmia (mason bees). Today, these two Middle Park endemic species are threatened by commercial, residential, and agricultural property development, the associated new utility installations and access roads, reservoir operations, off-highway vehicle recreation, oil and gas exploration, and livestock grazing. A loss of pollinators and their habitat due to development is also a threat to both species. Because of the limited ranges of the two species, their small population sizes, and numerous threats, they were listed as endangered under the Endangered Species Act in 1989. Thirty-three percent of the Osterhout milkvetch and a small percentage of the Penland beardtongue populations are on private lands. The Endangered Species Act does not protect plants on private lands and therefore, all conservation actions on private lands are voluntary. Funding is available to landowners wanting to conserve the species. Please contact Gina Glenne or Ellen Mayo at 970-243-2778 for further information on this species and ways that you can help with conservation and recovery. |
Tanggal | |
Sumber | Osterhout Milkvetch |
Pembuat | USFWS Mountain-Prairie |
Lisensi
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This image was originally posted to Flickr by USFWS Mountain Prairie at https://flickr.com/photos/51986662@N05/5715872143. It was reviewed on 27 April 2016 by FlickreviewR and was confirmed to be licensed under the terms of the cc-by-2.0. |
27 April 2016
Public domainPublic domainfalsefalse |
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This image or recording is the work of a U.S. Fish and Wildlife Service employee, taken or made as part of that person's official duties. As a work of the U.S. federal government, the image is in the public domain. For more information, see the Fish and Wildlife Service copyright policy.
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Captions
Items portrayed in this file
menggambarkan
some value
6 Juli 2010
exposure time Inggris
0,002 detik
f-number Inggris
5,6
focal length Inggris
90 milimeter
ISO speed Inggris
100
image/jpeg
Flickr photo ID Inggris
Riwayat berkas
Klik pada tanggal/waktu untuk melihat berkas ini pada saat tersebut.
Tanggal/Waktu | Miniatur | Dimensi | Pengguna | Komentar | |
---|---|---|---|---|---|
terkini | 27 April 2016 18.37 | ![]() | 2.848 × 4.272 (3,01 MB) | Holly Cheng | Transferred from Flickr via Flickr2Commons |
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Metadata
Berkas ini mengandung informasi tambahan yang mungkin ditambahkan oleh kamera digital atau pemindai yang digunakan untuk membuat atau mendigitalisasi berkas. Jika berkas ini telah mengalami modifikasi, rincian yang ada mungkin tidak secara penuh merefleksikan informasi dari gambar yang sudah dimodifikasi ini.
Produsen kamera | Canon |
---|---|
Model kamera | Canon EOS DIGITAL REBEL XSi |
Waktu pajanan | 1/500 detik (0,002) |
Nilai F | f/5,6 |
Rating kecepatan ISO | 100 |
Tanggal dan waktu pembuatan data | 6 Juli 2010 14.58 |
Jarak fokus lensa | 90 mm |
Resolusi horizontal | 72 dpi |
Resolusi vertikal | 72 dpi |
Tanggal dan waktu perubahan berkas | 6 Juli 2010 14.58 |
Penempatan Y dan C | Atas (co-sited) |
Program pajanan | Tak terdefinisi |
Versi Exif | 2.21 |
Tanggal dan waktu digitalisasi | 6 Juli 2010 14.58 |
Arti tiap komponen |
|
Kecepatan rana APEX | 9 |
Bukaan APEX | 5 |
Bias pajanan | 0 |
Mode pengukuran | Pola |
Kilas | Lampu kilat tidak menyala |
Subdetik DateTime | 03 |
Subdetik DateTimeOriginal | 03 |
Subdetik DateTimeDigitized | 03 |
Dukungan versi Flashpix | 1 |
Ruang warna | sRGB |
Resolusi bidang fokus X | 4.876,7123287671 |
Resolusi bidang fokus Y | 4.865,6036446469 |
Unit resolusi bidang fokus | inci |