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Paper Birch Decline in the Niobrara River Valley, Nebraska: Weather, Microclimate, and Birch Stand Conditions: Open-File Report 2009-1221 by Esther D. Stroh, Joel P. Miller, United U. S. Department of the Interior - Paperback
60.90 درهم

Paper Birch Decline in the Niobrara River Valley, Nebraska: Weather, Microclimate, and Birch Stand Conditions: Open-File Report 2009-1221 by Esther D. Stroh, Joel P. Miller, United U. S. Department of the Interior - Paperback

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60.90 درهم 

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الأسعار تشمل ضريبة القيمة المضافة  التفاصيل
رقم ال ISBN
9781288709441
الفئات
سياسة
الكاتب
Esther D. Stroh, Joel P. Miller, United U. S. Department of the Interior
الناشر
Bibliogov
الوصف:

The Niobrara River Valley in north-central Nebraska supports scattered stands of paper birch (Betula papyrifera Marsh), a species more typical of boreal forests. These birch stands are considered to be relictual populations that have persisted since the end of the Wisconsin glaciation, when regional flora was more boreal in nature (Wright 1970, Kaul and others, 1988). Dieback of ...

تشحن من الولايات المتحدة
اشحن الى دبي (تغيير المدينة)
التوصيل خلال السبت ١ سبتمبر - الأحد ٢ سبتمبر الي دبي

حالة السلعة:
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البائع:
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معلومات المنتج

  •  

    المواصفات

    رقم ال ISBN
    9781288709441
    الفئات
    سياسة
    الرقم المميز للسلعة
    2724354425408
    المؤلفين
    الكاتب
    Esther D. Stroh, Joel P. Miller, United U. S. Department of the Interior
    المؤلفين
    الناشر
    Bibliogov
    رقم ال ISBN
    9781288709441
    الفئات
    سياسة
    الرقم المميز للسلعة
    2724354425408
    المؤلفين
    الكاتب
    Esther D. Stroh, Joel P. Miller, United U. S. Department of the Interior
    المؤلفين
    الناشر
    Bibliogov
    معلومات تقنية
    غلاف الكتاب
    غلاف عادي
    اللغات والبلدان
    لغة الكتاب
    الانجليزية
    إقرأ المزيد
  •  

    الوصف:

    The Niobrara River Valley in north-central Nebraska supports scattered stands of paper birch (Betula papyrifera Marsh), a species more typical of boreal forests. These birch stands are considered to be relictual populations that have persisted since the end of the Wisconsin glaciation, when

    The Niobrara River Valley in north-central Nebraska supports scattered stands of paper birch (Betula papyrifera Marsh), a species more typical of boreal forests. These birch stands are considered to be relictual populations that have persisted since the end of the Wisconsin glaciation, when regional flora was more boreal in nature (Wright 1970, Kaul and others, 1988). Dieback of canopy-sized birch has been observed throughout the Niobrara Valley in recent years, although no onset dates are documented. The current dieback event probably started around or after the early 1980's. The study objectives were to understand microclimatic conditions in birch stands relative to nearby weather stations and historic weather conditions, and to assess current health conditions of individual birch trees. Temperature was measured every half-hour from June 2005 through October 2007 in 12 birch stands and individual birch tree health was measured as expressed by percent living canopy in these and 13 additional stands in spring 2006 and 2007. Birch site microclimate was compared to data from a National Weather Service station in Valentine, Nebraska, and to an automated weather station at The Nature Conservancy Niobrara Valley Preserve 24 kilometers north of Johnstown, Nebraska. Historic weather data from the Valentine station and another National Weather Service Station at Ainsworth, Nebraska, were used to reconstruct minimum and maximum temperature at The Nature Conservancy and one microclimate monitoring station using Kalman filtering and smoothing algorithms. Birch stand microclimate differed from local weather stations as well as among stands. Birch health was associated with annual minimum temperature regimes; those stands whose annual daily minimum temperature regimes were most like The Nature Conservancy station contained smaller proportions of living trees. Frequency of freeze/thaw conditions capable of inducing rootlet injury and subsequent crown dieback significantly have i.

    خصائص المنتج:
    • الفئات: سياسة
    • غلاف الكتاب: غلاف عادي
    • لغة الكتاب: الانجليزية
    • الكاتب: Esther D. Stroh, Joel P. Miller, United U. S. Department of the Interior
    • الناشر: Bibliogov
    • رقم ال ISBN: 9781288709441
    • عدد الصفحات: 34
    • لأبعاد (الارتفاع*العرض*العمق): 9.69 x 7.44 x 0.07 inches
 

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