Patterns of genetic diversity that result from bottlenecks in Scots Pine and the implications for local genetic conservation and management practices in Bulgaria

New Forests ◽  
2011 ◽  
Vol 42 (2) ◽  
pp. 179-193 ◽  
Author(s):  
Krassimir D. Naydenov ◽  
Michel K. Naydenov ◽  
Francine Tremblay ◽  
Alexander Alexandrov ◽  
Louis Daniel Aubin-Fournier
2018 ◽  
Vol 18 ◽  
pp. 15-28 ◽  
Author(s):  
Kamal Aryal ◽  
Sushmita Poudel ◽  
Ram Prasad Chaudary ◽  
Nakul Chettri ◽  
Wu Ning ◽  
...  

Crop genetic diversity has been an important source of subsistence livelihoods and nutrition in the remote Himalayan region for local communities. This study documents the crop diversity, their current status and farmer’s knowledge and practices. Study was based on analysis of one local crop diversity fair, 18 key informant surveys, nine focus group discussions and 195 individual household surveys with set questionnaires. The community structure in the study area has female dominance (52%) with average family size of 7.1. The study documents 78 species of various crops which were used as food, vegetables, fruits, medicine, and spices. Highest varietal diversity was recorded in Maize (15), Paddy (12), wheat (11), and beans (10). However, a number of crop varieties are being lost and threatened over the time. Both anthropogenic and natural drivers of changes were reported as the major reason of such loss. Despite loss of crop varieties farmers have been maintaining a wide range of crop and varietal diversity in situ on farm by their own initiatives and experiences. Our study showed that self-saved seed contributed as the major source of planting material through which they are maintaining the crop diversity. However, a detailed study on the seed supply system is needed to support easy access to the farmers. More awareness raising program as well as empowerment of farming communities is essential for the continuation of conservation and management practices.


Author(s):  
Ricardo Serna-Lagunes ◽  
Erick Jair Pastor-Medina ◽  
Ruth Guadalupe Castillo-Rodríguez ◽  
Anabel Cruz-Romero ◽  
Juan Salazar-Ortiz ◽  
...  

2014 ◽  
Vol 7 (1) ◽  
pp. 52-59
Author(s):  
A. K. Ekart ◽  
A. Ya. Larionova ◽  
K. G. Zatsepina ◽  
A. N. Kravchenko ◽  
S. Zham″yansuren ◽  
...  

2017 ◽  
Vol 65 (6) ◽  
pp. 362
Author(s):  
Francesca Lyndon-Gee ◽  
Joanna Sumner ◽  
Yang Hu ◽  
Claudio Ciofi ◽  
Tim S. Jessop

Rotational logging practices are used with the goal of reducing forest disturbance impacts on biodiversity. However, it is poorly understood whether such forest management practices conserve the demographic and genetic composition of animal populations across logged landscapes. Here we investigated whether rotational logging practices alter patterns of landscape-scale population abundance and genetic diversity of a forest-dwelling lizard (Eulamprus heatwolei) in south-eastern Australia. We sampled lizards (n = 407) at up to 48 sites across a chronosequence of logging disturbance intervals (<10 to >60 years after logging) to assess site-specific population changes and genetic diversity parameters. Lizard abundances exhibited a significant curvilinear response to time since logging, with decreased numbers following logging (<10 years), increased abundance as the forest regenerated (10–20 years), before decreasing again in older regenerated forest sites (>30 years). Lizard genetic diversity parameters were not significantly influenced by logging disturbance. These results suggest that logging practices, whilst inducing short-term changes to population abundance, had no measurable effects on the landscape-scale genetic diversity of E. heatwolei. These results are important as they demonstrate the value of monitoring for evaluating forest management efficacy, and the use of different population-level markers to make stronger inference about the potential impacts of logging activities.


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