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Initial Results from a Study of Climatic Changes and the Effect on Wild Sheep Habitat in Selected Study Areas of Alaska: Open-File Report 2010-1135 by Edwin Pfeifer, United U. S. Department of the Interior, Et Al - Paperback
66.15 درهم

Initial Results from a Study of Climatic Changes and the Effect on Wild Sheep Habitat in Selected Study Areas of Alaska: Open-File Report 2010-1135 by Edwin Pfeifer, United U. S. Department of the Interior, Et Al - Paperback

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66.15 درهم 

  - ستوفر -66.16 درهم
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رقم ال ISBN
9781288707607
الفئات
سياسة
الكاتب
Edwin Pfeifer, United U. S. Department of the Interior, Et Al
الناشر
Bibliogov
الوصف:

Climate change theorists have projected striking changes in local weather on earth due to increases in temperature. These predicted changes may cause melting glaciers and ice caps, rising sea levels, increasing desertification and other environmental changes which seem likely to affect presumed indicator species as harbingers of more significant changes. Wild sheep, even though they are one ...

تشحن من الولايات المتحدة
اشحن الى دبي (تغيير المدينة)
التوصيل خلال الأحد ٥ أغسطس - الثلاثاء ٧ أغسطس الي دبي

حالة السلعة:
جديدة
البائع:
InternationalBookStore (87% تقييم ايجابي)

معلومات المنتج

  •  

    المواصفات

    رقم ال ISBN
    9781288707607
    الفئات
    سياسة
    الرقم المميز للسلعة
    2724354418721
    المؤلفين
    الكاتب
    Edwin Pfeifer, United U. S. Department of the Interior, Et Al
    المؤلفين
    الناشر
    Bibliogov
    رقم ال ISBN
    9781288707607
    الفئات
    سياسة
    الرقم المميز للسلعة
    2724354418721
    المؤلفين
    الكاتب
    Edwin Pfeifer, United U. S. Department of the Interior, Et Al
    المؤلفين
    الناشر
    Bibliogov
    معلومات تقنية
    غلاف الكتاب
    غلاف عادي
    اللغات والبلدان
    لغة الكتاب
    الانجليزية
    إقرأ المزيد
  •  

    الوصف:

    Climate change theorists have projected striking changes in local weather on earth due to increases in temperature. These predicted changes may cause melting glaciers and ice caps, rising sea levels, increasing desertification and other environmental changes which seem likely to affect presumed

    Climate change theorists have projected striking changes in local weather on earth due to increases in temperature. These predicted changes may cause melting glaciers and ice caps, rising sea levels, increasing desertification and other environmental changes which seem likely to affect presumed indicator species as harbingers of more significant changes. Wild sheep, even though they are one of the more successful mammalian taxa since Pleistocene times, exhibit a suite of adaptations to glacier driven environments which may be presumed to render them sensitive to environmental changes. The authors began investigation with these assumptions by comparing changes, as determined by satellite imagery, in glacier extent in our study areas in Denali National Park, Alaska, during the last 30 years. Our findings showed the extent of glacial retreat in Alaska during this time period was approximately 40-50 percent as measured by ablation zone and retreat of terminal moraines. During the first half of this 30-year period, Dall sheep (Ovis dalli dalli) populations were stable at historically recorded highs. In the early to mid-1990s, Dall sheep populations in Alaska declined from an historical estimated high of 75,000 sheep to the presently estimated 40-50,000. The declines seemed to be weather related, on the basis of the presumption that lamb survival rates are primarily weather-mediated in Alaska. Changes in local weather appear, at this point, to be correlated with oscillation in the Pacific Current in the Northern Pacific ocean. Of course, changes in local weather affect forage abundance and quality seasonally. In investigating a possible linkage of weather to seasonal forage abundance and quality, we also investigated changes in snow and ice extent and distribution, as well as increased water runoff associated with permafrost and depleted glaciers. Databases were assembled from a wide variety of remotely sensed satellite data, ground-based observations, and historical dat.

    خصائص المنتج:
    • الفئات: سياسة
    • غلاف الكتاب: غلاف عادي
    • لغة الكتاب: الانجليزية
    • الكاتب: Edwin Pfeifer, United U. S. Department of the Interior, Et Al
    • الناشر: Bibliogov
    • رقم ال ISBN: 9781288707607
    • عدد الصفحات: 76
    • لأبعاد (الارتفاع*العرض*العمق): 9.69 x 7.44 x 0.16 inches
 

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