geoscience.net logo
+ Resolve Article
+ Follow Us
Follow on FacebookFollow on Facebook
Follow on TwitterFollow on Twitter

+ Translate
+ Subscribe to Site Feed
GeoScience Most Shared ContentMost Shared Content

Stability in ecosystem functioning across a climatic threshold and contrasting forest regimes


, : Stability in ecosystem functioning across a climatic threshold and contrasting forest regimes. Plos One 6(1): E16134-E16134

Classical ecological theory predicts that changes in the availability of essential resources such as nitrogen should lead to changes in plant community composition due to differences in species-specific nutrient requirements. What remains unknown, however, is the extent to which climate change will alter the relationship between plant communities and the nitrogen cycle. During intervals of climate change, do changes in nitrogen cycling lead to vegetation change or do changes in community composition alter the nitrogen dynamics? We used long-term ecological data to determine the role of nitrogen availability in changes of forest species composition under a rapidly changing climate during the early Holocene (16k to 8k cal. yrs. BP). A statistical computational analysis of ecological data spanning 8,000 years showed that secondary succession from a coniferous to deciduous forest occurred independently of changes in the nitrogen cycle. As oak replaced pine under a warming climate, nitrogen cycling rates increased. Interestingly, the mechanism by which the species interacted with nitrogen remained stable across this threshold change in climate and in the dominant tree species. This suggests that changes in tree population density over successional time scales are not driven by nitrogen availability. Thus, current models of forest succession that incorporate the effects of available nitrogen may be over-estimating tree population responses to changes in this resource, which may result in biased predictions of future forest dynamics under climate warming.

US$19.90

PMID: 21267469

DOI: 10.1371/journal.pone.0016134


Other references

Calaforra Jose M.; Pulido Bosch A., 2003: Evolution of the gypsum karst of Sorbas (SE Spain). The gypsum karst of Sorbas is developed within Messinian gypsum characterized by an interbedded sequence of selenitic gypsum beds and marls. This geological configuration has led to the development of an interstratal karst in which galleries have...

Bearzatto, M.; Naserke, H.; Piquer, S.; Koczwara, K.; Lampasona, V.; Williams, A.; Christie, M.R.; Bingley, P.J.; Ziegler, A.G.; Bonifacio, E., 2002: Two distinctly HLA-associated contiguous linear epitopes uniquely expressed within the islet antigen 2 molecule are major autoantibody epitopes of the diabetes-specific tyrosine phosphatase-like protein autoantigens. The related tyrosine phosphatase-like proteins islet Ag (IA)-2 and IA-2beta are autoantigens of type 1 diabetes in humans. Autoantibodies are predominantly against IA-2, and IA-2-specific epitopes are major autoantibody targets. We used the close...

Lee, P.N.; Rothwell, K.; Whitehead, J.K., 1977: Fractionation of mouse skin carcinogens in cagarette smoke condensate. The results of a series of mouse-skin paintings are given for fractions prepared by two schemes designed to concentrate the polycyclic aromatic hydrocarbons (PAH) and their heterocyclic analogues (HETC) present in cigarette smoke condensate into s...

Madanat, R.; Moritz, N.; Larsson, S.; Aro, H.T., 2006: RSA applications in monitoring of fracture healing in clinical trials. Radiostereometric analysis (RSA) was originally developed as a method for performing highly accurate three-dimensional measurements in vivo over time from sequential radiographs. Since its introduction over twenty years ago, the RSA method has pro...

Takahara, K., 1977: Automated apparatus for biochemical analysis and related problems. Iyo Denshi to Seitai Kogaku. Japanese Journal of Medical Electronics and Biological Engineering 15(1): 1-8

Bodryagina A.V., 1968: Nature of the cytoplasmic granules of allantois epithelium of the chick embryo inst electron microscopy. Doklady Akademii Nauk Sssr: 1413-1415

Maes, A.; Collier, M.; Verschaeve, L., 2001: Cytogenetic effects of 900 MHz (GSM) microwaves on human lymphocytes. The cytogenetic effects of 900 MHz radiofrequency fields were investigated with the chromosome aberration and sister chromatid exchange frequency methods. Three different modes of exposure (continuous, pseudo-random and dummy burst) were studied f...

Ohyama, Y.; Nakamura, S.; Matsuzaki, G.; Shinohara, M.; Hiroaki, A.; Oka, M.; Nomoto, K., 1995: T-cell receptor V-alpha and V-beta gene use by infiltrating T cells in labial glands of patients with Sjogren's syndrome. Sjogren's syndrome is an autoimmune disease affecting the exocrine glands; it is thought to result from T-cell-mediated damage. In the labial glands of 20 patients with Sjogren's syndrome, infiltrating T cells were immunohistochemically...

Kochhar, R., 2013: Natural history in India during the 18th and 19th centuries. Journal of Biosciences 38(2): 201-224

Akikusa, H., 1977: Studies on changes of dispersant amalgam surface in vitro and in vivo. Shika Gakuho. Dental Science Reports 77(3): 457-485