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Nutritional constraints in terrestrial and freshwater food webs
In both lakes and terrestrial systems, herbivores should have low growth efficiencies when consuming autotrophs with typical carbon-to-nutrient ratios and stoichiometric constraints on herbivore growth appear to be qualitatively similar and widespread in both environments.
TRY – a global database of plant traits
The improved availability of plant trait data in the unified global database is expected to support a paradigm shift from species to trait-based ecology, offer new opportunities for synthetic plant trait research and enable a more realistic and empirically grounded representation of terrestrial vegetation in Earth system models.
Biological stoichiometry from genes to ecosystems.
It is hypothesized that the continuous generation of variation in the rDNA may also play a role in how species interactions develop in ecosystems under different conditions of energy input and nutrient supply.
CONNECTIVITY, FRAGMENTATION, AND EXTINCTION RISK IN DENDRITIC METAPOPULATIONS
- W. Fagan
- Environmental Science
- 1 December 2002
A simple geometric model and metapopulation modeling is used to make three points concerning the ecological consequences of dendritic landscapes.
Growth rate–stoichiometry couplings in diverse biota
The close relationship between P and RNA contents indicates that ribosomes themselves represent a biogeochemically significant repository of P in ecosystems and that allocation of P to ribosome generation is a central process in biological production in ecological systems.
Socioeconomics drive urban plant diversity
- D. Hope, C. Gries, A. Kinzig
- Environmental ScienceProceedings of the National Academy of Sciences…
- 7 July 2003
It is concluded that a functional relationship, which the authors term the “luxury effect,” may link human resource abundance (wealth) and plant diversity in urban ecosystems.
Nitrogen in Insects: Implications for Trophic Complexity and Species Diversification
Using a recently compiled database on insect nutrient content, it is found that predators exhibit on average 15% greater nitrogen content than herbivores, and evidence that recently derived lineages have, on a relative basis, 15%–25% less body nitrogen than more ancient herbivore lineages.
Biological stoichiometry of plant production: metabolism, scaling and ecological response to global change.
- J. Elser, W. Fagan, A. Kerkhoff, N. Swenson, B. Enquist
- Environmental ScienceThe New phytologist
- 1 May 2010
Emerging knowledge of how plant nutrients respond to environmental variables and are connected to size, the effects of global change factors can be better understood.
Phylogenetic and Growth Form Variation in the Scaling of Nitrogen and Phosphorus in the Seed Plants
- A. Kerkhoff, W. Fagan, J. Elser, B. Enquist
- Environmental ScienceThe American Naturalist
- 6 September 2006
A comparative scaling analysis of a global data compilation detailing the N and P contents of leaves, stems, roots, and reproductive structures of 1,287 species in 152 seed plant families finds that P and N contents are generally highly correlated both within and across organs and that differences exist between woody and herbaceous taxa.