Effect of various monotypic forest canopies on earthworm biomass and feral pig rooting in Hawaiian wet forests

2014 ◽  
Vol 331 ◽  
pp. 79-84 ◽  
Author(s):  
Noa Kekuewa Lincoln
Keyword(s):  
Forest Canopies ◽  
Earthworm Biomass ◽  
Wet Forests ◽  
Feral Pig

Ecological impacts of feral pig diggings in north Queensland rainforests

2007 ◽  
Vol 34 (8) ◽  
pp. 603 ◽  
Author(s):  
J. Mitchell ◽  
W. Dorney ◽  
R. Mayer ◽  
J. McIlroy
Keyword(s):  
Soil Moisture ◽  
Moisture Content ◽  
Soil Moisture Content ◽  
Plant Biomass ◽  
Seedling Survival ◽  
Ecological Impacts ◽  
Earthworm Biomass ◽  
Dry Soil ◽  
Temporal Interaction ◽  
Feral Pig

This two-year study examined the impacts of feral pig diggings on five ecological indicators: seedling survival, surface litter, subsurface plant biomass, earthworm biomass and soil moisture content. Twelve recovery exclosures were established in two habitats (characterised by wet and dry soil moisture) by fencing off areas of previous pig diggings. A total of 0.59 ha was excluded from further pig diggings and compared with 1.18 ha of unfenced control areas. Overall, seedling numbers increased 7% within the protected exclosures and decreased 37% within the unprotected controls over the two-year study period. A significant temporal interaction was found in the dry habitat, with seedling survival increasing with increasing time of protection from diggings. Feral pig diggings had no significant effect on surface litter biomass, subsurface plant biomass, earthworm biomass or soil moisture content.

Impact of nonnative feral pig removal on soil structure and nutrient availability in Hawaiian tropical montane wet forests

2017 ◽  
Vol 19 (3) ◽  
pp. 749-763 ◽  
Author(s):  
Michael S. Long ◽  
Creighton M. Litton ◽  
Christian P. Giardina ◽  
Jonathan Deenik ◽  
Rebecca J. Cole ◽  
...  
Keyword(s):  
Nutrient Availability ◽  
Soil Structure ◽  
Wet Forests ◽  
Feral Pig

scholarly journals How does leaf functional diversity affect the light environment in forest canopies? An in-silico biodiversity experiment

2021 ◽  
Vol 440 ◽  
pp. 109394
Author(s):  
Elena Plekhanova ◽  
Pascal A. Niklaus ◽  
Jean-Philippe Gastellu-Etchegorry ◽  
Gabriela Schaepman-Strub
Keyword(s):  
Functional Diversity ◽  
In Silico ◽  
Light Environment ◽  
Forest Canopies

scholarly journals Macroclimate drives growth of hair lichens in boreal forest canopies

2020 ◽  
Author(s):  
Nathan H. Phinney ◽  
Yngvar Gauslaa ◽  
Kristin Palmqvist ◽  
Per‐Anders Esseen
Keyword(s):  
Boreal Forest ◽  
Forest Canopies

Mapping Snowpack Depth beneath Forest Canopies Using Airborne Lidar

2004 ◽  
Vol 70 (3) ◽  
pp. 323-330 ◽  
Author(s):  
Chris Hopkinson ◽  
Mike Sitar ◽  
Laura Chasmer ◽  
Paul Treitz
Keyword(s):  
Airborne Lidar ◽  
Forest Canopies

The influence of forest site on rate and extent of soil compaction and profile disturbance of skid trails during ground-based harvesting

2000 ◽  
Vol 30 (8) ◽  
pp. 1196-1205 ◽  
Author(s):  
J R Williamson ◽  
W A Neilsen
Keyword(s):  
Root Growth ◽  
Soil Compaction ◽  
Forest Type ◽  
Soil Bulk Density ◽  
Parent Material ◽  
Forest Site ◽  
Undisturbed Soil ◽  
Soil Parent Material ◽  
Wet Forests

Soil compaction has been considered a principal form of damage associated with logging, restricting root growth and reducing productivity. The rate and extent of soil compaction on skid trails was measured at six field locations covering a range of dry and wet forests. Data was collected for up to 21 passes of a laden logging machine. A similar extent of compaction, averaging 0.17 g·cm-3 increase in total soil bulk density (BD), was recorded for all field sites despite substantial site and soil differences. On average, 62% of the compaction in the top 10 cm of the soil occurred after only one pass of a laden logging machine. The environment under which soils had formed played a major role in determining the BD of the undisturbed soil. Compaction was strongly related to the original BD, forest type, and soil parent material. Soil strengths obtained in the field fell below levels found to restrict root growth. However, reduction in macropores, and the effect of that on aeration and drainage could reduce tree growth. On the wettest soils logged, machine forces displaced topsoils rather than causing compaction in situ. Recommended logging methods and implications for the development of sustainability indices are discussed.

Canopy and edge activity of bats in a quaking aspen (Populus tremuloides) forest

2012 ◽  
Vol 90 (7) ◽  
pp. 798-807 ◽  
Author(s):  
T.W. Pettit ◽  
K.T. Wilkins
Keyword(s):  
Populus Tremuloides ◽  
High Frequency ◽  
Regression Tree ◽  
Low Frequency ◽  
Tree Height ◽  
Quaking Aspen ◽  
Activity Levels ◽  
Forest Canopies ◽  
Bat Activity ◽  
Cart Analysis

Characteristics of edges affect the behavior of species that are active in and near edges. Forest canopies may provide edge-like habitat for bats, though bat response to edge orientation has not been well examined. We sampled bat activity in quaking aspen ( Populus tremuloides Michx.) forest canopies and edges in Heber Valley, Utah, during summer 2009 using Anabat detectors. Categorization and regression tree (CART) analysis of echolocation characteristics (e.g., frequency, duration) identified two guilds based on characteristic frequency (i.e., high- and low-frequency guilds). We used linear regression to compare characteristics of canopy and edge vegetation (e.g., tree height, diameter at breast height) to bat activity levels. Activity levels of high-frequency bats did not respond differentially to edge vegetation; low-frequency bat activity seemed to respond to canopy height. Activity levels of high-frequency bats were significantly greater than low-frequency bats in both edges and canopies. We detected significantly more bat activity in forest edges than in forest canopies, indicating the importance of edges to bats in forests.

Sign in / Sign up

Export Citation Format

Share Document