Search results for " change"

Biogeographical patterns of soil molecular microbial biomass as influenced by soil characteristics and management

2011

Aim The spatial organization of soil microbial communities on large scales and the identification of environmental factors structuring their distribution have been little investigated. The overall objective of this study was to determine the spatial patterning of microbial biomass in soils over a wide extent and to rank the environmental filters most influencing this distribution.

2020

Abstract. The new PAGES2k global compilation of temperature-sensitive proxies offers an unprecedented opportunity to study regional to global trends associated with orbitally driven changes in solar irradiance over the past 2 millennia. Here, we analyze pre-industrial long-term trends from 1 to 1800 CE across the PAGES2k dataset and find that, in contrast to the gradual cooling apparent in ice core, marine, and lake sediment data, tree rings do not exhibit the same decline. To understand why tree-ring proxies lack any evidence of a significant pre-industrial cooling, we divide those data by location (high Northern Hemisphere latitudes vs. midlatitudes), seasonal response (annual vs. summer)…

Heating glaciers from below

2013

Climate change is affecting the cryosphere from above. Geothermal heat flux from below is also contributing to conditions at the base of Greenland's ice sheet, which sits atop a lithosphere of variable thickness.

Changing Behavior : A Theory- and Evidence-Based Approach

2020

Social problems in many domains, including health, education, social relationships, and the workplace, have their origins in human behavior. The documented links between behavior and social problems have sparked interest in governments and organizations to develop effective interventions to promote behavior change. The Handbook of Behavior Change provides comprehensive coverage of contemporary theory, research, and practice on behavior change. The handbook incorporates theory- and evidence-based approaches to behavior change with chapters from leading theorists, researchers, and practitioners from multiple disciplines, including psychology, sociology, behavioral science, economics, and impl…

Adolescents’ physical, emotional and social balance: a concept of pedagogical assistance and social rehabilitation

2017

The paper summarizes research findings from two scientific fields (pedagogical and medical), which confirm that there are substantial discrepancies in an individuals’ biological, psychological and social development in the period of adolescence leading to a developmental imbalance mainly related to learning. The article offers for discussion a possible conceptual approach and practice-grounded changes of pedagogical provisions to improve teenagers’ physical, psycho-emotional balance and social rehabilitation culminating in overall well-being.

Intensified forestry as a climate mitigation measure alters surface water quality in low intensity managed forests

2020

Climate change has led to a focus on forest management techniques to increase carbon (C) sequestration as a mitigation measure. Fertilisation and increased removal of biomass have been proposed. But these and other forest practices may have undesirable effects on surface water quality. In naturally acid-sensitive areas such as much of Fennoscandia a concern is acidification due to acid deposition in combination with forest practices that increase the removal of base cations and leaching of nitrate (NO3). Here we apply the biogeochemical model MAGIC to the coniferous-forested catchment at Birkenes, southernmost Norway, to simulate the effects of forest fertilisation and harvest on soil and s…

Integrating risk management tools for regional forest planning: an interactive multiobjective value-at-risk approach

2018

In this paper, we present an approach employing multiobjective optimization to support decision making in forest management planning under risk. The primary objectives are biodiversity and timber cash flow, evaluated from two perspectives: the expected value and the value-at-risk (VaR). In addition, the risk level for both the timber cash flow and biodiversity values are included as objectives. With our approach, we highlight the trade-off between the expected value and the VaR, as well as between the VaRs of the two objectives of interest. We employ an interactive method in which a decision maker iteratively provides preference information to find the most preferred management plan and le…

Evaluating a hierarchical approach to landscape-level harvest scheduling

2018

Forest planning at the landscape level has the potential to become a large intractable problem. In Finland, Metsähallitus (the state enterprise that manages federally owned land) creates strategic plans to determine the appropriate harvest level. While these plans are feasible, they are not implementable in practice as the harvests are scattered temporally and spatially. Requiring that harvests be organized both temporally and spatially for practical implementation can result in an intractable problem. Through a hierarchical approach, the problem can be organized into steps in which the intractable problem is broken down into smaller easily solvable parts. As an approximation technique, th…

The walk-and-talk methodology – researching place and people

2020

The article focuses on walk-and-talk interviews, which are yet a little-used research method in Latvia. The term is used in the social sciences and humanities and is an appropriate method for gathering data in order to determine the relationship of an individual or a social group with a specific place. The method in a pilot project was used to listen to life experiences in Tūja, a village along the Baltic coast in Latvia. The study focused on social change in Tūja and the influence of the economic and political changes of the 1990s on the living conditions and lifestyle of the local inhabitants. The pilot project was conducted by the researchers from the Institute of Philosophy and Sociolog…

Social determinants of identity in communities: A social capital- and social categorization-based approach – findings from Latvia

2017

The article investigates the relations, in the light of new paradigms of economic development, between trust and economic wealth at the micro level in the Republic of Latvia, by means of a structural equation modelling-based approach and a framework combining social capital and social identity theory, in a rationale of cross-fertilization between social and cognitive science. Results are also tested against control dimensions reflecting relevant divides in Latvian society (residence place dimensions; ethno-linguistic belongings; educational differences). General results support the hypothesis of the existence of a causal path connecting personal wealth, institutional trust, social engagemen…