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Displaying 4669 - 4680 of 6006

Applying Geomorphic Principles in the Design of Mountain Biking Singletracks: Conceptual Analysis and Mathematical Modeling

Peer-reviewed publication
October, 2020
United States of America

Mountain biking, also known as singletracking, is an emerging sector in outdoor recreation activities. Experience shows that although bicycling is considered a low-impact activity, singletracking may have adverse environmental footprints. Here, we review and conceptually analyze the forces applied on singletracks, and implement mathematical modeling of these forces, for a range of climatic conditions and geographic settings. Specifically, we focus on the hydrological and geomorphic impacts of singletracking, and highlight the importance of applying geomorphic principles in their design.

A Regression-Based Procedure for Markov Transition Probability Estimation in Land Change Modeling

Peer-reviewed publication
October, 2020
Norway

Land change models commonly model the expected quantity of change as a Markov chain. Markov transition probabilities can be estimated by tabulating the relative frequency of change for all transitions between two dates. To estimate the appropriate transition probability matrix for any future date requires the determination of an annualized matrix through eigendecomposition followed by matrix powering. However, the technique yields multiple solutions, commonly with imaginary parts and negative transitions, and possibly with no non-negative real stochastic matrix solution.

From the Ground Up: Prairies on Reclaimed Mine Land—Impacts on Soil and Vegetation

Peer-reviewed publication
October, 2020
United States of America

After strip mining, soils typically suffer from compaction, low nutrient availability, loss of soil organic carbon, and a compromised soil microbial community. Prairie restorations can improve ecosystem services on former agricultural lands, but prairie restorations on mine lands are relatively under-studied. This study investigated the impact of prairie restoration on mine lands, focusing on the plant community and soil properties. In southeast Ohio, 305 ha within a ~2000 ha area of former mine land was converted to native prairie through herbicide and planting between 1999–2016.

The Huerta Agricultural Landscape in the Spanish Mediterranean Arc: One Landscape, Two Perspectives, Three Specific Huertas

Peer-reviewed publication
October, 2020
Venezuela
Canada
United States of America
Europe
Greece
Italy
Spain

The Huerta is recognised as one of the 13 specific agricultural landscapes in Europe, present in only three Mediterranean countries, namely Spain, Italy, and Greece. In the case of Spain, three areas fall within the established Huerta agricultural classification: the Huertas de Valencia, Murcia, and Vega Baja.

Retrospective Analysis of Permafrost Landscape Evolution in Yakutia during the Holocene Warm Intervals

Peer-reviewed publication
October, 2020
United States of America

The observed global warming has significant impacts on permafrost. Permafrost changes modify landscapes and cause damage to infrastructure. The main purpose of this study was to estimate permafrost temperatures and active-layer thicknesses during the Holocene intervals with significantly warmer-than-present climates—the Atlantic (5500 years BP), Subboreal (3500 years BP) and Subatlantic (1000 years BP) optimums. Estimates were obtained using the ready-to-use models derived by G.M. Feldman, as well as mathematical modeling taking account of the paleogeography of the Holocene warm intervals.

The Role of Coffee Organizations as Agents of Rural Governance: Evidence from Western Honduras

Peer-reviewed publication
October, 2020
Honduras

Territorial governance is the development strategy that encourages the integration of different actors in the rural environment around common interests. Producer organizations emerge as the appropriate means to unify leadership and consensus to overcome market barriers. These producer networks also influence other dimensions of development, to give way to true governance processes.

Knowledge Mobilization in the Beaver Hills Biosphere, Alberta, Canada

Peer-reviewed publication
October, 2020
Canada

This study explores how knowledge was and is mobilized to advance the objectives of the Beaver Hills Biosphere Reserve, located in Alberta, Canada. Established in 2016, a 12-year collaborative effort worked to establish the biosphere reserve and achieve formal UNESCO designation. Subsequent efforts to grow the newly established biosphere reserve have accelerated in recent years. Our study documented how different types of knowledge were accessed, created, curated, and shared between partners during these two time periods.

Attitude and Perception of Residents towards the Benefits, Challenges and Quality of Neighborhood Parks in a Sub-Saharan Africa City

Peer-reviewed publication
October, 2020
Sub-Saharan Africa

Urban parks provide various environmental, socio-cultural and economic benefits, also called ecosystem services, as well as challenges. Urban park planning and management needs to consider the perception and attitude of people towards the benefits, challenges and quality of the parks. However, such information is largely lacking for cities of Sub-Saharan Africa.

Gender Inequality and Symbolic Violence in Women’s Access to Family Land in the Southern Highlands of Tanzania

Peer-reviewed publication
October, 2020
Tanzania

We set out to unveil gender inequality with respect to women’s access to family land following the surge in tree-planting in selected villages in the Southern Highlands of Tanzania. Specifically, the study describes land-transaction procedures at the household level and shows how the lack of women’s involvement in such land transactions affect their access to and control over family lands. Gender inequality is portrayed in a variety of social and economic activities, with women being deprived of access to, control over, and ownership of land.

Changes in the Function of Allotment Gardens in an Attractive Location Based on the Example of Tri-City in Poland

Peer-reviewed publication
October, 2020
Central African Republic
Guatemala
United States of America
Philippines
Eastern Europe
Poland
United Kingdom
Spain
Germany

Allotment gardens are quite common in many European countries. In particular, they are an important part of the urban space in Central and Eastern Europe. They served to improve the inhabitants’ physical and mental well-being during the communist period and relieved the family budget thanks to their own crops. The article analyzes the functioning of allotment gardens in Poland based on the example of the Tri-City, with particular emphasis on allotment gardens in a prestigious, attractive location.

Planosol CO2 Respiration, Chemical and Physical Properties of Differently Tilled Faba Bean Cultivation

Peer-reviewed publication
October, 2020
Lithuania

Soil tillage intensity influences the chemical composition of soil, the distribution of nutrients, and soil physical and mechanical properties, as well as gas flows. The impact of reduced tillage on these indices in faba bean cultivation is still insufficient and requires more analysis on a global scale. This study was carried out at Vytautas Magnus University, Agriculture Academy (Lithuania) in 2016–2018.

Forest Area Change in the Shifting Landscape Mosaic of the Continental United States from 2001 to 2016

Peer-reviewed publication
October, 2020
Canada
United States of America
Belgium
Australia

The landscape context (i.e., anthropogenic setting) of forest change partly determines the social-ecological outcomes of the change. Furthermore, forest change occurs within, is constrained by, and contributes to a dynamic landscape context. We illustrate how information about local landscape context can be incorporated into regional assessments of forest area change.