Search Results - "Knops, Johannes M.H."

Plant species loss decreases arthropod diversity and shifts trophic structure by Haddad, Nick M, Crutsinger, Gregory M, Gross, Kevin, Haarstad, John, Knops, Johannes M.H, Tilman, David

“…Plant diversity is predicted to be positively linked to the diversity of herbivores and predators in a foodweb. Yet, the relationship between plant and animal…”
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From selection to complementarity: shifts in the causes of biodiversity–productivity relationships in a long-term biodiversity experiment by Fargione, Joseph, Tilman, David, Dybzinski, Ray, Lambers, Janneke Hille Ris, Clark, Chris, Harpole, W. Stanley, Knops, Johannes M.H, Reich, Peter B, Loreau, Michel

“…In a 10-year (1996–2005) biodiversity experiment, the mechanisms underlying the increasingly positive effect of biodiversity on plant biomass production…”
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Integrative modelling reveals mechanisms linking productivity and plant species richness by Grace, James B., Anderson, T. Michael, Seabloom, Eric W., Borer, Elizabeth T., Adler, Peter B., Harpole, W. Stanley, Hautier, Yann, Hillebrand, Helmut, Lind, Eric M., Pärtel, Meelis, Bakker, Jonathan D., Buckley, Yvonne M., Crawley, Michael J., Damschen, Ellen I., Davies, Kendi F., Fay, Philip A., Firn, Jennifer, Gruner, Daniel S., Hector, Andy, Knops, Johannes M. H., MacDougall, Andrew S., Melbourne, Brett A., Morgan, John W., Orrock, John L., Prober, Suzanne M., Smith, Melinda D.

“…Data from grasslands across five continents show clear signals of numerous underlying mechanisms linking ecosystem productivity and species richness…”
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Herbivore impact on grassland plant diversity depends on habitat productivity and herbivore size by Bakker, Elisabeth S, Ritchie, Mark E, Olff, Han, Milchunas, Daniel G, Knops, Johannes M.H

“…Mammalian herbivores can have pronounced effects on plant diversity but are currently declining in many productive ecosystems through direct extirpation,…”
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The importance of rare species: a trait‐based assessment of rare species contributions to functional diversity and possible ecosystem function in tall‐grass prairies by Jain, Meha, Flynn, Dan F.B., Prager, Case M., Hart, Georgia M., DeVan, Caroline M., Ahrestani, Farshid S., Palmer, Matthew I., Bunker, Daniel E., Knops, Johannes M.H., Jouseau, Claire F., Naeem, Shahid

“…The majority of species in ecosystems are rare, but the ecosystem consequences of losing rare species are poorly known. To understand how rare species may…”
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Species-driven changes in nitrogen cycling can provide a mechanism for plant invasions by Laungani, Ramesh, Knops, Johannes M.H

“…Traits that permit successful invasions have often seemed idiosyncratic, and the key biological traits identified vary widely among species. This fundamentally…”
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Negative correlation does not imply a tradeoff between growth and reproduction in California oaks by Knops, Johannes M.H, Koenig, Walter D, Carmen, William J

“…A tradeoff between growth and reproduction, often inferred from an inverse correlation between these two variables, is a fundamental paradigm of life-history…”
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Soil Carbon and Nitrogen Accumulation and Vertical Distribution across a 74-Year Chronosequence by Knops, Johannes M.H, Bradley, Kate L

“…The majority of the world's terrestrial C and N is contained in soil; however, most soil research has been focused on the top 10 to 30 cm. We quantified the…”
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Interrelationships among life-history traits in three California oaks by Barringer, Brian C., Koenig, Walter D., Knops, Johannes M. H.

“…Life-history traits interact in important ways. Relatively few studies, however, have explored the relationships between life-history traits in long-lived taxa…”
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Dynamics of soil nitrogen and carbon accumulation for 61 years after agricultural abandonment by Knops, J.M.H, Tilman, D

“…We used two independent methods to determine the dynamics of soil carbon and nitrogen following abandonment of agricultural fields on a Minnesota sand plain…”
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Six-year removal of co-dominant grasses alleviated competitive pressure on subdominant grasses but dominant shrub removal had neutral effects in a subalpine ecosystem by Li, Wenjin, Knops, Johannes M.H., Png, G. Kenny, Yan, Xi, Dong, Huan, Li, Jinhua, Zhou, Huakun, Sierra, Rubén Díaz

“…The ‘stress-gradient hypothesis’ predicts increasing facilitative interactions with increasing environmental stress, but it remains unclear if the prevailing…”
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Biological traits are correlated with elevational distribution range of eastern Tibetan herbaceous species by Qi, Wei, Bu, Haiyan, Liu, Kun, Li, Wenjin, Knops, Johannes M. H, Wang, Juhong, Li, Wenlong, Du, Guozhen

“…Plants that share the same habitat often exhibit similar biological traits. As climatic conditions change with increasing elevation, biological traits are…”
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Herbivore effects on plant and nitrogen dynamics in oak savanna by Ritchie, M.E. (Utah State University, Logan, UT.), Tilman, D, Knops, J.M.H

“…Herbivores can often control plant dynamics by mediating positive feedbacks in plant species' influence on nutrient cycling. In a 7-yr field experiment in a…”
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Impacts of management on decomposition and the litter-carbon balance in irrigated and rainfed no-till agricultural systems by Kochsiek, Amy E., Knops, Johannes M.H., Walters, Daniel T., Arkebauer, Timothy J.

“…The litter carbon (C) pool of a single litter cohort in an agroecosystem is the difference between net primary productivity and decomposition and comprises…”
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Mast-producing trees and the geographical ecology of western scrub-jays by Koenig, Walter D., Krakauer, Alan H., Monahan, William B., Haydock, Joseph, Knops, Johannes M. H., Carmen, William J.

“…We analyzed the relationship between population abundance and variability of western scrub-jays Aphelocoma californica based on 48 yr of Audubon Christmas Bird…”
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The Influence of Epiphytic Lichens on the Nutrient Cycling of an Oak Woodland by Johannes M. H. Knops, Nash, Thomas H., Schlesinger, William H.

“…We examined the importance of the epiphytic lichen, Ramalina menziesii, in a blue oak (Quercus douglasii) woodland of California, using a factorial experiment…”
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Subsurface Soil Carbon and Nitrogen Losses Offset Surface Carbon Accumulation in Abandoned Agricultural Fields by Yang, Yi, Knops, Johannes M. H.

“…Abandoned agricultural fields (old fields) are thought to accumulate soil organic matter (SOM) after cultivation cessation. However, most research on old…”
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Contingent factors explain average divergence in functional composition over 88 years of old field succession by Clark, Adam Thomas, Knops, Johannes M. H., Tilman, Dave, Bardgett, Richard

“…“Old fields” are ecosystems that have been previously managed and subsequently abandoned, usually from agricultural use. These systems are classic testing…”
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Consistent responses of soil microbial communities to elevated nutrient inputs in grasslands across the globe by Leff, Jonathan W., Jones, Stuart E., Prober, Suzanne M., Barberán, Albert, Borer, Elizabeth T., Firn, Jennifer L., Harpole, W. Stanley, Hobbie, Sarah E., Hofmockel, Kirsten S., Knops, Johannes M. H., McCulley, Rebecca L., LaPierre, Kimberly, Risch, Anita C., Seabloom, Eric W., Schütz, Martin, Steenbock, Christopher, Stevens, Carly J., Fierer, Noah

“…Soil microorganisms are critical to ecosystem functioning and the maintenance of soil fertility. However, despite global increases in the inputs of nitrogen…”
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Biodiversity and yield trade‐offs for organic farming by Gong, Shanxing, Hodgson, Jenny A., Tscharntke, Teja, Liu, Yunhui, Werf, Wopke, Batáry, Péter, Knops, Johannes M. H., Zou, Yi, Chase, Jonathan

“…Organic farming supports higher biodiversity than conventional farming, but at the cost of lower yields. We conducted a meta‐analysis quantifying the trade‐off…”
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