Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
Results
Showing 1 to 8 of 8 for “"aboveground net primary productivity"”.
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Species and functional diversity effects on productivity and nutrient uptake: implications for designing sustainable agricultural systems in the Midwest
<p>Temporal data on aboveground biomass and nutrient uptake by species and functionally diverse native perennial plant species and communities is needed to enhance the performance of in-field buffer conservation practices. Comparisons on the performance of monocultures and polycultures of four …
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The effect of timing of growing season drought on flowering of Andropogon gerardii
… for determining ecosystem function, especially aboveground net primary productivity (ANPP), in a variety of ecosystems. The particular precipitation period(s) of greatest importance varies between ecosystems. In tallgrass prairie of the central US, the relative importance of different …
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Carbon cycling in secondary tropical dry forest from species to global scales.
… Chapter 3, I studied landscape level controls of aboveground biomass and plant functional trait distributions in secondary tropical dry forests of northwestern Costa Rica. I found that edaphic factors, and plant functional traits explain little additional variation in biomass after accounting for …
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Community and ecosystem changes in tallgrass prairie restorations: the effects of population source and diversity
… of other important ecosystem functions including aboveground net primary productivity, total, microbial, and mineralizable soil C, and soil aggregate mean weighted diameter were achieved equally well with either high or low diversity prairie plantings.
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Mob stocking effects on herbage nutritive value, herbage accumulation, and plant species composition
… mob stocked pastures at Blacksburg and Raphine, aboveground net primary productivity in 2014 did not differ significantly among mob, rotational, and continuous stocking at any of the project locations. Herbage nutritive value did not differ significantly among stocking methods over two years at …
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Ecosystem responses to precipitation extremes
… the semi-arid steppe of Colorado (low mean productivity) and the mesic tallgrass prairie of northeastern Kansas (high mean productivity). I show that despite these ecosystems harboring differing ecological characteristics, aboveground net primary productivity was consistently more sensitive …
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The timing of growing season drought and its effects on above- and belowground production in a mesic grassland
… the response of both above- and belowground net primary production (ANPP & BNPP) to reductions in precipitation in a mesic, tallgrass prairie in NE Kansas. Experimental plots were subjected to one of three drought treatments (25% reductions in the average growing season precipitation [GSP]) …
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Beyond productivity- Effects of extreme weather events on ecosystem processes and biotic interactions
… of extreme weather events on vegetation is on primary productivity. In our experiment in artificially planted communities, even an extreme drought of 1000-year recurrence did not have effects on above- or below-ground biomass production from 2005-2010. Thus, the main objectives of this thesis …