MARC 主機 00000nam  2200421   4500 
001    AAI3539372 
005    20121124142213.5 
008    121124s2012    ||||||||||||||||| ||eng d 
020    9781267635617 
035    (UMI)AAI3539372 
040    UMI|cUMI 
100 1  Jarchow, Meghann Elizabeth 
245 10 Tradeoffs in ecosystem services of prairies managed for 
       bioenergy production 
300    154 p 
500    Source: Dissertation Abstracts International, Volume: 74-
       02, Section: A, page:  
500    Adviser: Matt Liebman 
502    Thesis (Ph.D.)--Iowa State University, 2012 
520    The use of perennial plant materials as a renewable source
       of energy may constitute an important opportunity to 
       improve the environmental sustainability of managed land. 
       Currently, the production of energy from agricultural 
       products is primarily in the form of ethanol from corn 
       grain, which used more than 45% of the domestic U.S. corn 
       crop in 2011. Concomitantly, using corn grain to produce 
       ethanol has promoted landscape simplification and 
       homogenization through conversion of Conservation Reserve 
       Program grasslands to annual row crops, and has been 
       implicated in increasing environmental damage, such as 
       increased nitrate leaching into water bodies and increased
       rates of soil erosion. In contrast, perennial prairie 
       vegetation has the potential to be used as a bioenergy 
       feedstock that produces a substantial amount of biomass as
       well as numerous ecosystem services. Reincorporating 
       prairies to diversify the landscape of the Midwestern U.S.
       at strategic locations could provide more habitat for 
       animals, including beneficial insects, and decrease 
       nitrogen, phosphorus, and sediment movement into water 
       bodies. In this dissertation, I present data from two 
       field experiments that examine (1) how managing prairies 
       for bioenergy production affects prairie ecology and 
       agronomic performance and (2) how these prairie systems 
       differ from corn systems managed for bioenergy production.
       Results of this work show that there are tradeoffs among 
       prairie systems and between corn and prairie systems with 
       respect to the amount of harvested biomass, root 
       production, nutrient export, feedstock characteristics, 
       growing season utilization, and species and functional 
       group diversity. These results emphasize the need for a 
       multifaceted approach to fully evaluate bioenergy 
       feedstock production systems 
590    School code: 0097 
650  4 Biology, Ecology 
650  4 Agriculture, General 
650  4 Sustainability 
650  4 Energy 
690    0329 
690    0473 
690    0640 
690    0791 
710 2  Iowa State University.|bAgronomy 
773 0  |tDissertation Abstracts International|g74-02A 
856 40 |u