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Scots pine [Pinus sylvestris] ecosystem response to climate on a temperate to boreal forest transect: project description

100%

Reed D., Breymeyer A., Degorski M., Noble R.

Polish Journal of Ecology

2003

tom 51

nr 4

This brief paper describes the history and conceptual framework underlying the research presented in the remaining papers in this volume. This project began in 1996 as an international effort to examine Scots pine (Pinus sylvestris) ecosystem structure and function in one of the few accessible areas on earth where similar forested ecosystems exist over a 20° range in latitude. Widely predicted climate warming leads to serious concerns about how ecosystems may respond to stresses created by climate change. In order to recognize evidence of warming and to predict likely future responses, it is necessary to understand how ecosystems that are distributed along climatic gradients accommodate wide climatic differences. Few tree species are distributed as widely as Scots pine, which ranges over much of Europe. This species is ideal for investigations that address questions regarding climate change effects on forest ecosystem structure and processes. Its distribution over comparable sites extending from temperate to boreal zones (over more than 20° of latitude from northern Finland to southern Poland) permits characterization of this ecosystem over a relatively wide climatic range (covering a mean annual temperature difference of 9°C). This transect: 1) provides information concerning numerous ecological processes over this wide range of conditions; 2) serves as a template for the development, testing, and evaluation of specific ecological indicators related to climate change; and 3) allows evaluation, comparison, and projection of ecological properties and processes among similar ecosystems with varying climate.

Carbon pools and storage along a temperate to boreal transect in Northern Scots pine [Pinus sylvestris] forests

80%

Reed D., Nagel L.

Polish Journal of Ecology

2003

tom 51

nr 4

A significant portion of global terrestrial carbon is stored in forested ecosystems, particularly in systems north of 50°N latitude. Carbon fluxes to and from these systems have the potential to greatly influence global terrestrial C storage, and provide feedback loops in the global carbon cycle. This study examines total ecosystem C storage, and its allocation among ecosystem components, in nine study sites located in Scots pine (Pinus sylvestris) forests located from 50°N (southern Poland) to 70°N (northern Finland). Results indicate a remarkable similarity in total ecosystem C, despite great differences in physical appearance of the overstory. In the long-run, these results do not indicate a great deal of change in total C storage in these systems. The two component C pools that differ the most are the overstory biomass and the organic soil horizons; this raises the concern that these sites could be short-term sources of atmospheric C due to more rapid decomposition in the face of changing climate, but the overstory biomass could be a longer-term, possibly offsetting sink of atmospheric C.

Ograniczanie wyników

2 Polish Journal of Ecology

2 Reed D.

1 Breymeyer A.

1 Degorski M.

1 Nagel L.

1 Noble R.

2 2003

Wyniki wyszukiwania

Scots pine [Pinus sylvestris] ecosystem response to climate on a temperate to boreal forest transect: project description

Carbon pools and storage along a temperate to boreal transect in Northern Scots pine [Pinus sylvestris] forests