Open Access. Powered by Scholars. Published by Universities.®

Life Sciences Commons

Open Access. Powered by Scholars. Published by Universities.®

Forest Biology

1997

Institution
Keyword
Publication
Publication Type

Articles 1 - 13 of 13

Full-Text Articles in Life Sciences

Caloric Production Of Black Bear Foods In Great Smoky Mountains National Park, Robert Michael Inman Dec 1997

Caloric Production Of Black Bear Foods In Great Smoky Mountains National Park, Robert Michael Inman

Masters Theses

Understanding energetic potential of habitat patches is important for management designed to provide adequate habitat for wildlife species. Great Smoky Mountains National Park (GSMNP) has a high density of black bears that have been studied intensively from 1968-1997; habitats within the Park are relatively undisturbed, and similar vegetative cover types can be found throughout the southern Appalachian mountains. Black bear reproduction in the Park has been correlated to hard mast production, however little work has been done to assess the importance of soft mast. Geographic Information System (GIS) based habitat use models have been developed for bears in the Park, …


Analisis De La Fragmentacion De Los Espacios Naturales En El Sector Sur Del Area Urbana De Girona, Josep Pinta, Josep Vila, Joan M. Welch Sep 1997

Analisis De La Fragmentacion De Los Espacios Naturales En El Sector Sur Del Area Urbana De Girona, Josep Pinta, Josep Vila, Joan M. Welch

Geography & Planning Faculty Publications

No abstract provided.


Factors Influencing Germination Of Six Wetland Cyperaceae, John L. Larson Apr 1997

Factors Influencing Germination Of Six Wetland Cyperaceae, John L. Larson

Field Station Bulletins

In order to determine factors which may affect the differential seed germination of six members of the Cyperaceae which occur together in newly revegetated sedge meadow, seeds were tested for germ inability at three storage conditions. Seeds were also germinated at two alternating temperature regimes, 21/25° and 25/32°C. Germination of dry stored Carex hystericina and C. vulpinoidea was greater at the higher alternating temperature of 25/32°C while Scirpus atrovirens and S. cyperinus dry stored seed had a similar germination response at both alternating temperatures. Most of the moist-cool stored (stratified) seeds of the six species germinated well regardless of temperature. …


Wisconsin Freshwater Isopods (Asellidae), Joan Jass, Barbara Klausmeier Apr 1997

Wisconsin Freshwater Isopods (Asellidae), Joan Jass, Barbara Klausmeier

Field Station Bulletins

Four species of freshwater isopods in the family Asellidae were collected from Wisconsin. There is very little published information on the asellid isopods of Wisconsin. In this paper we provide descriptions of the size range, habitat characteristics, distribution, and life history traits of Wisconsin asellids based on data from our field work and information from the literature. We include a provisional key for identification of the male asellids which have been collected from Wisconsin.


Species Pools Of Seed Plants In Eastern Asia And North America, Shiyou Li, Kent T. Adair Jan 1997

Species Pools Of Seed Plants In Eastern Asia And North America, Shiyou Li, Kent T. Adair

eBooks

"In their monograph, Species Pools of seed plants in Eastern Asia and North America, Drs. Li and Adair present a comprehensive analysis of data collected during a ten-year study involving 10,000 plant species in east Asia and North America."


Vertical, Longitudinal And Seasonal Variation In The Benthic Fauna At The Fernow Experimential Forest, Parsons, West Virginia, Robert William Hood Jan 1997

Vertical, Longitudinal And Seasonal Variation In The Benthic Fauna At The Fernow Experimential Forest, Parsons, West Virginia, Robert William Hood

Theses, Dissertations and Capstones

Multi-level basket samplers were placed within the shallow hyporheic zone (0 - 30 cm) of first through fourth-order streams in the Elklick Run drainage at the Fernow Experimental Forest, Parsons, West Virginia. Samplers were colonized by macroinvertebrates over three month intervals and collected during three different seasons. Seasonal, longitudinal, and vertical variation in the macroinvertebrate assemblage were examined to better understand the structure and function of the interstitial macroinvertebrate assemblage and important underlying factors. Surber samples were collected for comparison between surface and hyporheic macroinvertebrate assemblages. Temperature, dissolved oxygen, water chemistry, and interstitial water movement were measured at sampler locations. …


Variability In Forest Floor Mass And Nutrient Concentration Of Mature Pine-Hardwoods In The Ouachita Mountains, Hal O. Liechty, Michael G. Shelton, Edwin R. Lawson Jan 1997

Variability In Forest Floor Mass And Nutrient Concentration Of Mature Pine-Hardwoods In The Ouachita Mountains, Hal O. Liechty, Michael G. Shelton, Edwin R. Lawson

Journal of the Arkansas Academy of Science

Prior to timber harvesting, forest floor mass and nutrient concentrations in forest floor and mineral soil were determined in 24 mature, shortleaf pine (Pinus echinata Mill.)-hardwood stands occurring within the northern, eastern, southern and western sub-ecoregions of the Ouachita Mountains. The forest floor samples were collected at each of three locations representing the lower, mid, and upper slope positions within each stand. Samples of the L-(litter) and F-layers (fermentation) were collected separately. Materials from the L-layer were differentiated into hardwood foliage, pine foliage, and woody/reproductive components. Mass and nutrient concentrations of the various forest floor components were compared among slope …


Ground Flora Composition Following Harvesting Of A Bottomland Hardwood Forest In The Mississippi River Batture Lands, James E. Kellum, Eric Sundell, Brian Roy Lockhart Jan 1997

Ground Flora Composition Following Harvesting Of A Bottomland Hardwood Forest In The Mississippi River Batture Lands, James E. Kellum, Eric Sundell, Brian Roy Lockhart

Journal of the Arkansas Academy of Science

No abstract provided.


A Biosystematic Survey Of Sierra Lodgepole Pine (Pinus Contorta Var. Murrayana [Critchfield]) Populations In The Transverse And Peninsular Ranges Of Southern California, Richard Gobin Everett Jan 1997

A Biosystematic Survey Of Sierra Lodgepole Pine (Pinus Contorta Var. Murrayana [Critchfield]) Populations In The Transverse And Peninsular Ranges Of Southern California, Richard Gobin Everett

Theses Digitization Project

No abstract provided.


Summer Home Range Size Of The Eastern Cascade Mountain Beaver (Aplodontia Rufa Rainieri) In Relation To Availability Of Preferred Food, Robert Julian Stagg Jan 1997

Summer Home Range Size Of The Eastern Cascade Mountain Beaver (Aplodontia Rufa Rainieri) In Relation To Availability Of Preferred Food, Robert Julian Stagg

All Master's Theses

Optimal foraging theories relate food preference to nutrient content and nutrient availability to home range size. After synthesizing these theories, I hypothesized that the availability of preferred food plants influences the home range size of generalist herbivores. I also hypothesized that the availability of preferred foods does not affect weight gain of time-minimizing generalist herbivores, but should affect the weight gain of energy-maximizing generalist herbivores. To test these hypotheses, I studied the home ranges, weights, weight gains, food habits, and habitats of six adult female mountain beavers (Aplodontia rufa) from six separate sites where bracken fern was either …


Winter Activity Patterns Of American Martens (Martes Americana): Rejection Of The Hypothesis Of Thermal-Cost Minimization, Gary S. Drew, John A. Bissonette Jan 1997

Winter Activity Patterns Of American Martens (Martes Americana): Rejection Of The Hypothesis Of Thermal-Cost Minimization, Gary S. Drew, John A. Bissonette

Green Canyon Environmental Research Area, Logan Utah

Despite their temperate to subarctic geographic range, American martens (Martes americana) possess a thermally inefficient morphology. The lack of morphological adaptations for reducing thermal costs suggests that marten may use behavioral strategies to optimize thermal budgets. During the winters of 1989-1990 and 1990-1991, we radio-collared and monitored the diel activity of 7 martens. A log-linear model suggested that the presence or absence of light was the only factor associated with marten activity patterns (p < 0.001). A regression of the percentage of active fixes on ambient temperature failed to detect an association (b = -4.45, p = 0.084, n = 12). Contents of marten seats suggested that their activity was consistent with the prey-vulnerability hypothesis. While martens must balance multiple life requisites, their activity patterns suggest that they accept increased thermal costs in order to increase foraging efficiency. However, the nocturnal activity of martens during winter was also consistent with the hypothesis that they may be able to limit their own exposure to predation risk. The nocturnal habits of Newfoundland martens in the winter were consistent with the hypothesis of avoidance of predation risk.


Effects Of Retained Pine And Hardwood Basal Areas On Percent Cover Of Plants Utilized By Bobwhite Quail, David G. Peitz, Philip A. Tappe, Michael G. Shelton Jan 1997

Effects Of Retained Pine And Hardwood Basal Areas On Percent Cover Of Plants Utilized By Bobwhite Quail, David G. Peitz, Philip A. Tappe, Michael G. Shelton

Journal of the Arkansas Academy of Science

Percent cover of seven forage species utilized by bobwhite quail (Colinus virginianus) was determined before thinning and 2 and 4 years after thinning a 35-year-old loblolly pine-hardwood stand. Combinations of three loblolly pine (15, 18, and 21 m2/ha) and three hardwood (0, 3.5, and 7 m2/ha) basal areas were replicated three times. Percent cover was determined for American beautyberry (Callicarpa americana), blackberry (Rubus spp.), tick trefoil (Desmodium spp.), lespedeza (Lespedeza spp.), panic grass (Panicum spp.), yellow wood sorrel (Oxalis stricta), and three-seeded mercury (Acalypha spp.). Percent cover of American beautyberry and blackberry increased with time. Tick trefoil and panic grass …


An Investigation Of The Acarine Fauna Of Rehabilitated Bauxite Mines In The Northern Jarrah Forest, Alex Cuccovia Jan 1997

An Investigation Of The Acarine Fauna Of Rehabilitated Bauxite Mines In The Northern Jarrah Forest, Alex Cuccovia

Theses : Honours

The northern jarrah forest relies on efficient nutrient cycling for its growth and long term sustainability. The decomposition of organic matter and the recycling of nutrients in such ecosystems are facilitated through the interaction of microflora with a myriad of invertebrates. The recolonisation of invertebrate fauna to rehabilitated bauxite mines is thus of critical importance to the long-term success of rehabilitation. This study investigated the soil and litter mite fauna, important components of the invertebrate community well known for their numerical dominance and high biodiversity. A spring sampling of the mite fauna was undertaken, employing standard soil and litter sampling …