Bottom–up and top–down effects on plant communities: nutrients limit productivity, but insects determine diversity and composition

نویسندگان

  • Lara Souza
  • Tamara Jane Zelikova
  • Nathan J. Sanders
چکیده

L. Souza ([email protected]), Oklahoma Biological Survey and Dept of Microbiology and Plant Biology, 111 E. Chesapeake St., Univ. of Oklahoma, Norman, OK 73019, USA. – T. J. Zelikova, Dept of Botany and Biodiversity Inst., Berry Center 231, 1000 E. University Ave., Univ. of Wyoming, Laramie, WY 82071, USA. – N. J. Sanders, Center for Macroecology, Evolution and Climate, Natural History Museum of Denmark, Univ. of Copenhagen, DK-2100 Copenhagen, Denmark.

برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

ثبت نام

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

منابع مشابه

Top-down and bottom-up diversity cascades in detrital vs. living food webs

Lee A. Dyer* and Deborah Letourneau Department of Ecology and Evolutionary Biology, Tulane University, New Orleans, LA 70118, USA Department of Environmental Studies, University of California, Santa Cruz, CA 95064, USA *Correspondence: E-mail: [email protected] Abstract Apex predators and plant resources are both critical for maintaining diversity in biotic communities, but the indirect ( cascad...

متن کامل

Bottom-up effects of host-plant species diversity and top-down effects of ants interactively increase plant performance.

While plant diversity is well known to increase primary productivity, whether these bottom-up effects are enhanced by reciprocal top-down effects from the third trophic level is unknown. We studied whether pine tree species diversity, aphid-tending ants and their interaction determined plant performance and arthropod community structure. Plant diversity had a positive effect on aphids, but only...

متن کامل

Consumer species richness and nutrients interact in determining producer diversity

While it is crucial to understand the factors that determine the biodiversity of primary producer communities, the relative importance of bottom-up and top-down control factors is still poorly understood. Using freshwater benthic algal communities in the laboratory as a model system, we find an unimodal relationship between nutrient availability and producer diversity, and that increasing numbe...

متن کامل

Top-down and bottom-up community regulation in marine rocky intertidal habitats.

Strong top-down control by consumers has been demonstrated in rocky intertidal communities around the world. In contrast, the role of bottom-up effects (nutrients and productivity), known to have important influences in terrestrial and particularly freshwater ecosystems, is poorly known in marine hard-bottom communities. Recent studies in South Africa, New England, Oregon and New Zealand sugges...

متن کامل

Direct and Indirect Effects of Avian Predation on Grasshopper Communities in Northern Mixed-grass Prairie

The ecological interactions between grasshoppers, predators, and resources that can limit the population growth of grasshoppers are poorly understood. A number of Þeld experiments have shown that top-down control by avian predators can limit grasshopper populations, but the effects of avian predators on grasshopper populations can differ between years and between sites in the samehabitat. I con...

متن کامل

ذخیره در منابع من


  با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید

برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

ثبت نام

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

عنوان ژورنال:

دوره   شماره 

صفحات  -

تاریخ انتشار 2016