scholarly journals Multiple environmental changes drive forest floor vegetation in a temperate mountain forest

2017 ◽  
Vol 7 (7) ◽  
pp. 2155-2168 ◽  
Author(s):  
Norbert Helm ◽  
Franz Essl ◽  
Michael Mirtl ◽  
Thomas Dirnböck
Keyword(s):  
Forest Floor ◽  
Environmental Changes ◽  
Mountain Forest ◽  
Forest Floor Vegetation

Nitrogen-retention capacity in a fertilized forest after clear-cutting — the effect of forest-floor vegetation

2015 ◽  
Vol 45 (1) ◽  
pp. 130-134 ◽  
Author(s):  
Per-Ola Hedwall ◽  
Johan Bergh ◽  
Annika Nordin
Keyword(s):  
Vegetation Cover ◽  
Forest Floor ◽  
Nitrogen Retention ◽  
Tree Seedling ◽  
Retention Capacity ◽  
N Retention ◽  
Clear Cutting ◽  
Nitrate N ◽  
Ammonium N ◽  
Forest Floor Vegetation

Forest fertilization with nitrogen (N) has several benefits to society such as increased wood production and carbon sequestration. There are, however, concerns about N leakage, particularly following clear-cutting. The forest-floor vegetation may increase the N retention of forest ecosystems; however, very few studies have quantified the amount of vegetation required. We studied the relationship between vegetation cover and risk of N leakage, estimated by the amounts of ammonium-N and nitrate-N retained on ion-exchange capsules in the soil, during 4 years following the clear-cutting and harvesting of logging residues in a previously fertilized forest in southern Sweden. Previous fertilization increased the amount of nitrate-N captured on the capsules, whereas the amount of ammonium-N decreased. The vascular vegetation cover increased from almost zero to approximately 25% independent of fertilization. The amount of ammonium-N and nitrate-N retained on the capsules was already reduced by 50%–75% at 20% vegetation cover, and by 30%–40% cover, it approached zero, independent of the number of years since clear-cutting. The vegetation may impede tree-seedling establishment, implying a trade-off between seedling growth and N-retention capacity. However, our results indicate that maximum N retention may be achieved at a relatively low vegetation cover, which could be accomplished with less intrusive scarification methods than currently used.

Forest floor vegetation plays an important role in photosynthetic production of boreal forests

2006 ◽  
Vol 221 (1-3) ◽  
pp. 241-248 ◽  
Author(s):  
Pasi Kolari ◽  
Jukka Pumpanen ◽  
Liisa Kulmala ◽  
Hannu Ilvesniemi ◽  
Eero Nikinmaa ◽  
...  
Keyword(s):  
Boreal Forests ◽  
Forest Floor ◽  
Photosynthetic Production ◽  
Forest Floor Vegetation

Microdistribution des espèces végétales au pied des troncs d'Acer saccharum dans une érablière du sud du Québec

1985 ◽  
Vol 63 (2) ◽  
pp. 274-276 ◽  
Author(s):  
André Cloutier
Keyword(s):  
Forest Floor ◽  
Acer Saccharum ◽  
Ecological Niche ◽  
Sugar Maple ◽  
Soil Depth ◽  
Herbaceous Plants ◽  
Forest Floor Vegetation ◽  
Nonrandom Pattern

This paper confirms the hypothesis that in a sugar maple – hickory forest, the forest floor vegetation growing near the base of Acer saccharum trunks is distributed following a nonrandom pattern. Bryophytes and herbaceous plants grow mostly near the trunk. In the same microhabitat, woody seedlings, dominated by Acer saccharum, seem unable to get established. This pattern is thought to be correlated with soil depth and the presence of stemflow. It is suggested that, in the community studied, the base of Acer saccharum trees constitutes an ecological niche essentially different from the rest of the forest floor.

scholarly journals Informative plot sizes in presence‐absence sampling of forest floor vegetation

2017 ◽  
Vol 8 (10) ◽  
pp. 1284-1291 ◽  
Author(s):  
Göran Ståhl ◽  
Magnus Ekström ◽  
Jonas Dahlgren ◽  
Per‐Anders Esseen ◽  
Anton Grafström ◽  
...  
Keyword(s):  
Forest Floor ◽  
Forest Floor Vegetation
Sign in / Sign up

Export Citation Format

Share Document