نتایج جستجو برای: subalpine

تعداد نتایج: 1257  

2015
Marion Boutin Thierry Lamaze Florian Couvidat André Pornon

Deposition of reactive nitrogen (N) from the atmosphere is expected to be the third greatest driver of biodiversity loss by the year 2100. Chemistry-transport models are essential tools to estimate spatially explicit N deposition but the reliability of their predictions remained to be validated in mountains. We measured N deposition and air concentration over the subalpine Pyrenees. N depositio...

2001
Prince George

The Aleza Lake Shelterwood Case Study is a recent introduction of uniform shelterwood methods to interior spruce-subalpine fir forests in central British Columbia. The goal of this operational trial is to test spruce shelterwood prescriptions designed for local conditions, and to monitor and report on post-harvest silvicultural results. Potential risks and operational disadvantages are also bei...

2016
Andrew Hansen Kristin Legg Robert Keane Edward Barge Martha Jenkins Michiel Pillet

Climate suitability is projected to decline for many subalpine species, raising questions about managing species under a deteriorating climate. Whitebark pine (WBP) (Pinus albicaulis) in the Greater Yellowstone Ecosystem (GYE) crystalizes the challenges that natural resource managers of many high mountain ecosystems will likely face in the coming decades. We review the system of interactions am...

Journal: :Environmental entomology 2009
Susan E Elliott

Bees feed almost exclusively on nectar and pollen from flowers. However, little is known about how food availability limits bee populations, especially in high elevation areas. Foraging distances and relationships between forager densities and resource availability can provide insights into the potential for food limitation in mobile consumer populations. For example, if floral resources are li...

Journal: :The New phytologist 2016
Roberto A Geremia Mihai Pușcaș Lucie Zinger Jean-Marc Bonneville Philippe Choler

The effect of plant species composition on soil microbial communities was studied at the multiregional level. We compared the soil microbial communities of alpine natural grasslands dominated by Carex curvula and anthropogenic subalpine pastures dominated by Nardus stricta. We conducted paired sampling across the Carpathians and the Alps and used Illumina sequencing to reveal the molecular dive...

Journal: :The New phytologist 2014
Paul V Dunnette Philip E Higuera Kendra K McLauchlan Kelly M Derr Christy E Briles Margaret H Keefe

Wildfires can significantly alter forest carbon (C) storage and nitrogen (N) availability, but the long-term biogeochemical legacy of wildfires is poorly understood. We obtained a lake-sediment record of fire and biogeochemistry from a subalpine forest in Colorado, USA, to examine the nature, magnitude, and duration of decadal-scale, fire-induced ecosystem change over the past c. 4250 yr. The h...

ژورنال: :مجله گیاهشناسی ایران 2015
محمد محمودی فرخ قهرمانی نژاد علی اصغر معصومی

گونه myosotis diminuta برای اولین بار برای ایران گزارش می شود. این گونه در سال 1392 بعد از گذشت بیش از صد سال از آخرین مشاهده مستند آن در جهان، درتالابی کوهستانی در منطقه دمیرلی زنجان واقع در شمال غرب ایران مشاهده شد. جزئیات آرایه شناختی و تصاویر گیاه به منظور تسهیل شناسایی صحرایی آن و همچنین ویژگی های خاص برای تشخیص از گونه های خویشاوند ارائه گردیده است.

Journal: :Fragmenta Faunistica 2022

In 2021, two specimens of Atheta knabli, a rare beetle species known mostly from subalpine/alpine regions in Europe, were discovered with dung-baited traps lowland habitat Białowieża Forest, NE Poland. To our knowledge, this is the first record for Poland and confirmed habitat.

Journal: :Proceedings of the National Academy of Sciences 1965

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