The influence of exurban landscapes and local site characteristics on riparian vegetation

The southern Appalachian Mountains have experienced large population growth and a change in land use in the past 30 years. The majority of development has been low density, suburban land, known as exurban development. The long-term effects of exurbanization on riparian vegetative communities in the southeastern Appalachian Mountains are not well known. We sought to determine if vegetative community composition and structure change as a function of watershed–level variables such as time since neighborhood development or percent impervious surface within the watershed. We also assessed local–scale measures of disturbance such as canopy cover and basal area. Over two years we sampled a total of 27 streams in exurban watersheds ranging in age from four to forty-four years, along with eight forested streams. Watershed–scale variables such as neighborhood age and impervious surface cover did not influence the aspects of riparian vegetation community we measured. Canopy cover, a measure of local habitat disturbance, offered better predictions of vegetation community metrics. Exurban neighborhoods and their landowners may have the potential to manage for riparian vegetation through the use of maintained stream buffer zones along the entire length of the stream.     

The evolutionary diversity of urban forests depends on their land-use history

Urban Ecosystems - Urbanization leads to strong modifications of landscape structure and ecosystem functioning, and urban areas are spreading rapidly. The aim of this study was to investigate how...     

Research and Identity: Role-efficacy,Benchmarking, and the Identity Construction Process

Abstract

In the spring of 2016, university students with little to no research experience volunteered to assist with surveying for a larger project on college success. Volunteers discussed their field experiences through written statements and semistructured interviews. Eighty log sheets and 14 in-depth interviews serve as the qualitative data for this study. We followed Braun and Clarke’s (2006) Thematic Analysis approach and reviewed the log sheets for key themes. Based on the initial analysis, semistructured standpoint interviews with student volunteers explored the development of a nascent research-based identity. Findings suggest that students’ research-based identity construction was a process that moved from low role-efficacy to emerging role-efficacy through the use of benchmarking and justification strategies that helped overcome negative emotions surrounding an initial sense of low role-efficacy with survey research tasks. We discuss how identity construction unfolded over time and suggest implications for this research.     

Whole Family Theraplay: Integrating Family Systems Theory and Theraplay to Treat Adoptive Families

This article regarding the effectiveness of Theraplay for the clinical treatment of adoptive families both outlines a model for integrating family systems theory with Theraplay to create a new approach entitled Whole Family Theraplay (WFT), as well as provides a preliminary report of a pilot study demonstrating the efficacy of that model. WFT integrates Theraplay with family systems approaches (Structural and Experiential Family Therapies) to treat parents and all the siblings within adoptive families. The findings indicate that WFT treatment may lead to statistically significant benefits in regard to family communication, adults’ interpersonal relationships, and children's overall behavioral functioning.     

Tactics to Ensure Durability of Behavior Change Following the Removal of an Intervention Specialist: A Review of Temporal Generality Within Organizational Behavior Management

The endurance of behavior change over time, including the time period after a behavior specialist has ceased to offer direct services, is an important consideration for both organizational behavior management and behavior analysis in general. This article considers a dozen strategies labelled temporal generality tactics that may foster the maintenance and institutionalization of intervention efforts in organizational settings. The use of such tactics was examined by conducting a comprehensive review of articles published between 1977 and 2014 in the Journal of Organizational Behavior Management. The results of this review suggest that although follow-up measures are frequently collected, explicit and proactive strategies to systematically increase the success of long-term behavior change are rarely used or researched.     

The Use of In Situ Behavioral Skills Training to Improve Staff Implementation of the PEAK Relational Training System

The study evaluated the effectiveness of an in situ behavioral skills training program for training 3 direct care staff to implement the Promoting the Emergence of Advanced Knowledge Relational Training System (PEAK) with 3 individuals with autism. PEAK is an evidence-based behavior analytic language development curriculum that uses discrete trials to promote the emergence of language. The data suggest that behavioral skills training improved staff implementation of PEAK and resulted in a corresponding improvement in selected language skills across 2 of 3 learners with autism.     

Gender and Sexual Orientation Bullying Victimization are Associated with Gun Carrying Among Adolescent Boys

Child and Adolescent Social Work Journal - Gun carrying and bullying victimization are associated among adolescent boys, however the type of the bullying remains relatively unknown. This study...     

Market Microstructure Invariance: Empirical Hypotheses

Using the intuition that financial markets transfer risks in business time, “market microstructure invariance” is defined as the hypotheses that the distributions of risk transfers (“bets”) and transaction costs are constant across assets when measured per unit of business time. The invariance hypotheses imply that bet size and transaction costs have specific, empirically testable relationships to observable dollar volume and volatility. Portfolio transitions can be viewed as natural experiments for measuring transaction costs, and individual orders can be treated as proxies for bets. Empirical tests based on a data set of 400,000+ portfolio transition orders support the invariance hypotheses. The constants calibrated from structural estimation imply specific predictions for the arrival rate of bets (“market velocity”), the distribution of bet sizes, and transaction costs.