This study examined interactions between visitors and mountain goats on the most heavily used trail in Glacier National Park. The primary objective was to give park managers a baseline of unbiased, reliable data with which to make informed decisions and improve the quality of interactions between visitors and mountain goats. Secondarily, this research was intended to achieve a thorough understanding of both human and wildlife responses during interactions on publically protected lands. The study was conducted over a two month period during the summer of 2013, and it was purely observational. Observations were recorded five days a week for approximately six hours each day, between the hours of 8 AM and 8 PM. Focal sampling and scan sampling methods were used to collect data on goat and visitor behaviors as well as emotional responses. Information was also collected on setting attributes (e.g. weather, time), the duration of interactions, the distance between mountain goats and visitors and the elevation of mountain goats relative to visitors. Results show that mountain goats along Hidden Lake Trail exhibited significantly different behaviors during interactions compared to when no interaction was occurring. In addition, the behaviors that mountain goats exhibited more frequently during interactions were more energy costly. Negative interactions occurred 42% of the time, but typically only one negative behavior was observed in these interactions, and the behavior was low in intensity. The likelihood of an interaction occurring was largely influenced by environmental variables such as weather, time of day and the location of mountain goats relative to visitors, while the duration of interactions was affected by the number of mountain goats present and the elevation of mountain goats relative to visitors. Ninety percent of all interactions were emotional experiences for visitors, and 95% of the emotions exhibited were positive in nature. Emotional responses varied based on the distance between mountain goats and visitors, time of day, weather, visitor group composition and the number of mountain goat kids present. Twelve emotional responses (both positive and negative) were also significantly correlated with duration. These findings illustrate the importance of understanding both wildlife and human responses, including emotional responses during interactions. Without the awareness of both, our knowledge is incomplete and effective management decisions cannot be made.

In North America there has been an increasing appreciation for the value of trembling aspen (Populus tremuloides Michx.) as a source of timber. Moreover, trembling aspen stands and the understory vegetation that they support also provide valuable forage for livestock and wildlife. Timber harvesting and cattle grazing are often done on the same area of land in western Manitoba, though not simultaneously. The purpose of this project is to summarize the effects cattle grazing has on regeneration numbers and forest health in post-harvest aspen stands in the Aspen Parkland of western Manitoba.

Under the Kyoto Protocol, participating nations are required to reduce National CO₂emissions according to their 'reduction commitment' or 'quantified emissions limitation', over the first commitment period, 2008-2012. One way in which nations could achieve this would be by increasing soil carbon storage through different management practices. Most former estimates of regional scale C sequestration potential have made use of either linear regressions based on long-term experimental data, whilst some have used dynamic soil organic matter (SOM) models linked to spatial databases. Few studies have compared these two methods, and none have compared regressions with two different SOM models. This thesis presents a case study investigation of the potential of different land management practices to sequester carbon in soil in arable land, and preliminary estimates of other potential C savings. Two dynamic SOM models were chosen for this study, RothC (a soil process model) and CENTURY (a general ecosystem model). RothC and CENTURY are the two most widely used and validated SOM models world-wide. Methods were developed to enhance use and comparability of the models in a predictive mode. These methods included a) estimation of the IOM pool for RothC, b) estimation of C inputs to soil, c) investigation of pool size distributions in CENTURY, and d) creation of a program to allow use of C inputs derived from CENTURY with the RothC model. This thesis has also investigated the importance of errors in C inputs to soil for predictive SOM modelling, and performed sensitivity analyses to investigate how errors in setting the size refractory SOM pools might affect predictions of SOC. RothC and CENTURY were compared at the site scale using datasets from seven European long-term experiments, in order to a) verify their ability to predict SOC changes under changes in land use and management relevant to studies of C sequestration potential, b) evaluate model performance under European climatic conditions, and c) compare the performance of the two models. Finally, a Geographic Information System (GIS) containing soil, land use and climate layers, was assembled for a case study region in Central Hungary. GIS interfaces were developed for the RothC and CENTURY models, thus linking them to spatial datasets at the regional level. This allowed a comparison of estimates of the C sequestration potential of different land management practices obtained using the two models and using regression-based estimates. Although estimates obtained by the different approaches were of the same order of magnitude, differences were observed. Encouragingly, some of the land management scenarios studied here showed sufficient C mitigation potential to meet Hungarian CO₂reduction commitments.

Satellite data potentially provide a useful tool for estimating forest cover and monitoring changes. Traditional forest surveying methods involve time consuming measurements of a large number of trees. Remotely sensed data may enable forest cover changes to be estimated very rapidly over large areas and with a minimum of ground data collection. At present the role of forest management in Britain is expanding, so that looking at forest cover changes is extremely useful for management purposes. The main task of this study was to detect plantation forest cover change information especially on thinned and clear cut areas. These changes were estimated using Normalised Difference Vegetation Index (NDVI) derived from SPOT HRV data, compared with Forestry Commission (FC) records and field investigations. To detect whether areas have been thinned and felled during the period of concern (1994-1997), three fundamental aspects were considered. First the pattern of forest cover was identified by using FC records and field investigations. This pattern was linked to SPOT data using NDVI. At this stage relationships between forest cover and structural variables (age, top tree height, mean diameter and basal area) were also examined. Second, changes over time were analysed by using NDVI measurements (1994-1997) and change detection methods, particularly to identify the pattern of felling. Third, pixel based forest cover changes in selected compartments were related and compared to FC thinning records and information collected by forest managers. A number of points about the ability of remote sensing techniques to provide an estimate of forest cover for management operations emerged from this study. First, it was found that NDVI changed spatially with different forest cover; spatial patterns were mainly identified in areas where major management operations (thinning and felling) were carried out. Second, temporal patterns of forest cover change, mainly due to felling operations were identified. Finally with a detailed analysis of thinned compartments, this study recognised changing patterns of forest cover, which were related to management operations. These findings should be very useful for operational planning in plantation forests. In particular, knowledge of spatial and temporal changes of forest cover may be useful in management operations where the availability of ancillary information is unreliable. These results appear to be sufficient for the initial stages of operational planning. However further investigations need to be undertaken to better understand a number of factors related to changes of forest cover.

No description available.

Single-tree selection harvesting is frequently used in the tolerant hardwood forests of North America but relatively little is known about how this silvicultural system affects wildlife, including many avian species. I investigated Rose-breasted Grosbeak (Pheucticus leudovicianus) habitat use, survival, and nestling provisioning behaviour in twelve hardwood stands in Algonquin Provincial Park which had been harvested by single-tree selection 0-5, 16-20, 21-25, and > 50 years previously. Density, pairing success, and the number of fledglings per successful nest were all significantly lower in the > 50 years post-harvest stands than in at least one other post-harvest treatment. Density and pairing success were significantly higher in the 16-20 year post-harvest stands than in other treatments. Neither nest nor fledgling survival differed significantly among post-harvest treatments, but all stands were population sinks except those cut 16-20 years previously. Nests that were initiated earlier in the season and built in areas with higher basal area were more likely to survive, whereas fledgling survival increased with days since fledging. Nest sites had higher cover from regenerative growth, saplings, and understory, and lower basal area than random locations. During their first week out of the nest, fledglings used locations with significantly higher cover from regenerative growth, saplings, small shrubs, and raspberry and elderberry bushes than were present at random locations. Habitat characteristics at nest and fledgling locations were significantly different, and estimates of nest and fledgling survival were not correlated among harvested stands. Nests attended by after-second-year (ASY) males were initiated significantly earlier, and territory density and productivity were significantly higher for ASY males than for second-year (SY) males. Nestling provisioning rates, male contribution to nestling provisioning and nest attendance, and mean nestling weights at the time of fledging were also significantly higher at nests attended by ASY males than at nests with SY males. This study found that single-tree selection did not have significant negative effects on Rose-breasted Grosbeaks breeding in a predominantly forested landscape, but like many other species of birds, experienced breeders were more successful than less experienced breeders were.

Single-tree selection harvesting is frequently used in the tolerant hardwood forests of North America but relatively little is known about how this silvicultural system affects wildlife, including many avian species. I investigated Rose-breasted Grosbeak (Pheucticus leudovicianus) habitat use, survival, and nestling provisioning behaviour in twelve hardwood stands in Algonquin Provincial Park which had been harvested by single-tree selection 0-5, 16-20, 21-25, and > 50 years previously. Density, pairing success, and the number of fledglings per successful nest were all significantly lower in the > 50 years post-harvest stands than in at least one other post-harvest treatment. Density and pairing success were significantly higher in the 16-20 year post-harvest stands than in other treatments. Neither nest nor fledgling survival differed significantly among post-harvest treatments, but all stands were population sinks except those cut 16-20 years previously. Nests that were initiated earlier in the season and built in areas with higher basal area were more likely to survive, whereas fledgling survival increased with days since fledging. Nest sites had higher cover from regenerative growth, saplings, and understory, and lower basal area than random locations. During their first week out of the nest, fledglings used locations with significantly higher cover from regenerative growth, saplings, small shrubs, and raspberry and elderberry bushes than were present at random locations. Habitat characteristics at nest and fledgling locations were significantly different, and estimates of nest and fledgling survival were not correlated among harvested stands. Nests attended by after-second-year (ASY) males were initiated significantly earlier, and territory density and productivity were significantly higher for ASY males than for second-year (SY) males. Nestling provisioning rates, male contribution to nestling provisioning and nest attendance, and mean nestling weights at the time of fledging were also significantly higher at nests attended by ASY males than at nests with SY males. This study found that single-tree selection did not have significant negative effects on Rose-breasted Grosbeaks breeding in a predominantly forested landscape, but like many other species of birds, experienced breeders were more successful than less experienced breeders were.

No description available.

This thesis presents findings from research conducted in Southern Kyrgyzstan, which followed nongovernmental organization (NGO) efforts to support climate change adaptation, and to support more resilient community-managed irrigation systems. Findings suggest that current NGO partnerships with Water User Associations (WUAs) frequently amount to financial and technical transactions, to preserve inherited infrastructure and resist disturbance. Enhancing resilience is pursued in an effort to maintain existing technical configurations of canals and water resources, despite altered socio-political and environmental conditions. Findings suggest increasing disassociation between irrigation constituents and the institutions and managers that are supposed to direct their grievances through legitimate democratic channels. Instead of being based on current irrigation practices and needs, decisions about allocating resources to technical components of the irrigation system seem to be based on desires to maintain past dynamics of resource access and distribution. The irrigation infrastructure and policies that were inherited from the Soviet era inherently favor those who were well-positioned after independence, while often disenfranchising others. Allocating resources to WUAs for technical projects to repair or maintain these configurations serves, at the same time, to maintain or even exacerbate existing local power and resource-access inequalities. The research project presented here has sought to provide NGOs operating in this arena with some actionable recommendations, for how they might conceptualize and focus their efforts to enhance resilience for community-managed irrigation systems. The research finds the absence of locally-specific knowledge and information concerning current irrigation practice from decision-making represents a critical barrier and potential opportunity to fostering effective deliberation and supporting transitions to more resilient systems. Do to their ostensibly impartial status, technical experience, and cross-community interactions, NGOs could play an important role in helping co-create and aggregate locally-specific knowledge about post-independence water use and access, which has gone hitherto ignored to the detriment of equitable and forward-looking management opportunities. In this way, NGOs who partner with WUAs for irrigation projects should increasingly base that partnership on the collection and management of information about irrigation practice, land-use, water availability and other parameters, in order to help establish WUAs as local institutions grounded in responsiveness to local conditions.

Increased sedimentation caused by post-fire flooding is a risk to people, homes, and buildings. The USDA Forest Service installs straw bale check dams in ephemeral channels to reduce sedimentation rates from small catchments. We set out to study if straw bale check dams effectively reduce sedimentation rates from five paired catchments following the 2010 Twitchell Canyon Fire in south central Utah. Each pair consisted of two adjacent catchments that had similar physical characteristics and areas, with catchment areas ranging from ~0.2 to 1.6 ha (~0.5 to 4.0 ac). For each pair we treated one catchment with four straw bale check dams per ha (two per ac) and left the other catchment untreated as a control. Sediment yields produced from catchments during 2011 and 2012 were measured as well as the mass of sediment trapped by individual straw bale check dam structures. We found straw bale check dams did not significantly reduce annual catchment sediment yields produced by 30-minute rainfall intensities (I30) equal to or less than 14 mm hr-1 (0.5 in hr-1), a 1-year return period event at the study area. The straw bale check dams were filled to sediment holding capacity early in the first post-fire year from sediment yields produced by 1- and 2-year I30 return period rain events, or by two rain events having less than 1-year I30 intensity return periods. Three of the five paired catchments did not capture the total 2011 annual sediment yields because sediment retention structures used to measure catchment yields were overwhelmed by sediment during large rain events, however reliable measurements indicate annual sediment yields of 19.53 to 25.71 Mg ha-1 [8.71 to 11.47 t ac-1] passed over already full straw bale check dams. Straw bale check dams were non-functioning during the second post-fire year, allowing 3.74 to 13.12 Mg ha-1 [1.67 to 5.85 t ac-1] of sediment to pass over structures. The mean mass of sediment trapped by individual straw bale check dams is 1.26 Mg (1.40 t). At a treatment rate of four straw bale check dams ha-1 (two ac-1), they trapped 5.87 Mg ha-1 (2.62 t ac-1) of sediment.