8 research outputs found
Conservation implications of exporting domestic wood harvest to neighboring countries
Among wealthy countries, increasing imports of natural resources to allow for unchecked
consumption and greater domestic environmental conservation has become commonplace.
This practice can negatively affect biodiversity conservation planning if natural resource
harvest is merely pushed across political borders. As an example, we focus on the boreal
forest ecosystem of Finland and northwest Russia. While the majority of protected forests
are in northern Finland, the majority of biodiversity is in southern Finland, where protection
is more difficult due to high private ownership, and the effectiveness of functioning
conservation networks is more uncertain due to a longer history of land use. In northwest
Russia, the current protected areas are inadequate to preserve most of the region’s naturally
dynamic and old growth forests. Increased importation of wood from northwest Russia to
Finland may jeopardize the long-term viability of species in high diversity conservation
areas in both Russia and Finland, through isolating conservation areas and lowering the age
of the surrounding forest mosaic. The boreal forest ecosystem of Fennoscandia and northwest
Russia would thus be best conserved by a large scale, coordinated conservation
strategy that addresses long-term conservation goals and wood consumption, forest industries,
logging practices and trade
Importing Timber, Exporting Ecological Impact
Covering 32% of the planet, boreal forests are one of the last relatively intact terrestrial biomes, and are a critical carbon sink in global climate dynamics. Mature and old-growth boreal forests provide a large number of products that are culturally and economically important, from wood-based lumber, pulp, and fuel wood, to numerous nonwood products. Intensive wood harvest and conservation of naturally dynamic intact forests tend to be mutually exclusive; where biodiversity is highly valued, wood harvests are limited or banned outright. The authors of this Policy Forum advise that increasing domestic forest protection without decreasing demand for wood necessitates an increase in foreign imports, which introduces a negative impact on forest biodiversity elsewhere. In some cases, exporting impact across the border may cause negative impacts to boomerang back into the country's protected forests
Can forest management based on natural disturbances maintain ecological resilience?
Given the increasingly global stresses on forests, many ecologists argue that managers must maintain ecological resilience: the capacity of ecosystems to absorb disturbances without undergoing fundamental change. In this review we ask: Can the emerging paradigm of natural-disturbance-based management (NDBM) maintain ecological resilience in managed forests? Applying resilience theory requires careful articulation of the ecosystem state under consideration, the disturbances and stresses that affect the persistence of possible alternative states, and the spatial and temporal scales of management relevance. Implementing NDBM while maintaining resilience means recognizing that (i) biodiversity is important for long-term ecosystem persistence, (ii) natural disturbances play a critical role as a generator of structural and compositional heterogeneity at multiple scales, and (iii) traditional management tends to produce forests more homogeneous than those disturbed naturally and increases the likelihood of unexpected catastrophic change by constraining variation of key environmental processes. NDBM may maintain resilience if silvicultural strategies retain the structures and processes that perpetuate desired states while reducing those that enhance resilience of undesirable states. Such strategies require an understanding of harvesting impacts on slow ecosystem processes, such as seed-bank or nutrient dynamics, which in the long term can lead to ecological surprises by altering the forest's capacity to reorganize after disturbance