Nova Publishers
My Account Nova Publishers Shopping Cart
HomeBooksSeriesJournalsReference CollectionseBooksInformationSalesImprintsFor Authors
            
  Top » Catalog » Books » Environment » Advances in Environmental Research. Volume 15 Chapters » My Account  |  Cart Contents  |  Checkout   
Quick Find
  
Use keywords to find the product you are looking for.
Advanced Search
What's New? more
Drug Development and Rare Pediatric Diseases: Issues, Strategic Plan, and Voucher Program Assessment
$62.00
Shopping Cart more
0 items
Information
Shipping & Returns
Privacy Notice
Conditions of Use
Contact Us
Notifications more
NotificationsNotify me of updates to Historical Patterns in Lichen Communities of Montane Quaking Aspen Forests pp. 33-64
Tell A Friend
 
Tell someone you know about this product.
Historical Patterns in Lichen Communities of Montane Quaking Aspen Forests pp. 33-64 $0.00
Authors:  (Paul C. Rogers, Dale L. Bartos, Ronald J. Ryel, Western Aspen Alliance, Department of Wildland Resources and Ecology Center, Utah State University, Logan, Utah, USA, and others)
Abstract:
Climate shifts and resource exploitation in Rocky Mountain forests have caused profound changes in quaking aspen (Populus tremuloides Michx.) structure and function since Euro-American settlement. It therefore seems likely that commensurate shifts in dependent epiphytes would follow major ecological transitions. In the current study, we merge several lines of inquiry to investigate historical changes using lichens as bioindicators of forest structure, air quality, and community composition. Though lichens are well known for their sensitivity to air borne pollutants, recent utilization in the monitoring realm has lead to novel uses as indicators of biodiversity and stand composition. A landscape level investigation in northern Utah and southern Idaho, USA, was implemented to track contemporary and long-term impacts of humans on aspen forests and their dependent macro lichens. We use historical sources, climate data, fire records, and passive ammonia sensors alongside forest and lichen monitoring techniques to gain further insight into aspen and epiphytic lichen community change over the past 150 years. Our research shows that historic drought conditions correlated closely with pulses of aspen regeneration during this period. Aspen initiation was closely aligned with large-scale resource impacts of the late 19th century. During the 20th century a moist climate pattern generally favored shade-tolerant conifers. Additionally, results from nonmetric multidimensional scaling (NMS) ordination indicate a primary successional gradient in determining lichen communities, but also revealed a significant gradient of more recent impacts from nitrogen loading originating from local ammonia (NH3) sources. While advancing succession generally favors lichen diversity, our findings suggest that medium-distance transport (10-50 km) of local air pollutants is already contributing to altered lichen communities. Overall, there are strong ties between landscape-level disturbance history and present aspen-dependent species assemblages. Effects on the epiphytic community are viewed as symptomatic of greater biodiversity and ecosystem impacts. 


Available Options:
Version:

  Open Access item.
  Click below PDF icon for free download.

  

This is an Open Access item. Click above PDF icon for free download.
Special Focus Titles
01.The European Union and the Global Financial Crisis: A View from 2016
02.International Human Rights and Justice
03.The Dutch: Creativity in the Face of Nature
04.Freshwater Resources of the Tropical North of Australia: A Hydrobiological Perspective
05.International Perspectives on Traumatic Stress: Theory, Access, and Mental Health Services
06.Marine Benthos: Biology, Ecosystem Functions and Environmental Impact
07.Mental Health Conditions and Services in Selected African Countries: Implications for Social Work and Human Services Professions
08.Child Maltreatment: Emerging Issues in Practice, Care and Prevention
09.Creativity in Gifted Children
10.Higher Education in Hong Kong: Nurturing Students to be Caring Service Leaders
11.Moral Classroom Management in Early Childhood Education
12.The Silver Conclave: Heroes, Heroines and Villains of English Literature

Nova Science Publishers
© Copyright 2004 - 2016

Historical Patterns in Lichen Communities of Montane Quaking Aspen Forests pp. 33-64