scholarly journals Genetic conservation and management of the California endemic, Torrey pine ( Pinus torreyana Parry): Implications of genetic rescue in a genetically depauperate species

2017 ◽  
Vol 7 (18) ◽  
pp. 7370-7381 ◽  
Author(s):  
Jill A. Hamilton ◽  
Raphaël Royauté ◽  
Jessica W. Wright ◽  
Paul Hodgskiss ◽  
F. Thomas Ledig
Keyword(s):  
Genetic Conservation ◽  
Genetic Rescue ◽  
Conservation And Management ◽  
Pinus Torreyana

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
Keyword(s):  
Genetic Diversity ◽  
Scots Pine ◽  
Management Practices ◽  
Genetic Conservation ◽  
Conservation And Management

scholarly journals Reduced representation sequencing to understand the evolutionary history of Torrey pine (Pinus torreyana Parry) with implications for rare species conservation

2021 ◽  
Author(s):  
Lionel N Di Santo ◽  
Sean Hoban ◽  
Thomas L Parchman ◽  
Jessica W Wright ◽  
Jill A Hamilton
Keyword(s):  
Genetic Diversity ◽  
Rare Species ◽  
Population Genetic ◽  
Genetic Connectivity ◽  
Genetic Rescue ◽  
Effective Population ◽  
Reduced Representation ◽  
Population Sizes ◽  
Pinus Torreyana ◽  
Reduced Representation Sequencing

Understanding the contribution of neutral and adaptive evolutionary processes to population differences is often necessary for better informed management and conservation of rare species. In this study, we focused on Pinus torreyana Parry (Torrey pine), one of the world's rarest pines, endemic to one island and one mainland population in California. Small population size, low genetic diversity, and susceptibility to abiotic and biotic stresses suggest Torrey pine may benefit from inter-population genetic rescue to preserve the species' evolutionary potential. We leveraged reduced representation sequencing to tease apart the respective contributions of stochastic and deterministic evolutionary processes to population differentiation. We applied these data to model spatial and temporal demographic changes in effective population sizes and genetic connectivity, to assess loci possibly under selection, and evaluate genetic rescue as a potential conservation strategy. Overall, we observed exceedingly low standing variation reflecting consistently low effective population sizes across time and limited genetic differentiation suggesting maintenance of gene flow following divergence. However, genome scans identified more than 2000 SNPs candidates for divergent selection. Combined with previous observations indicating population phenotypic differentiation, this indicates that natural selection has likely contributed to population genetic differences. Thus, while reduced genetic diversity, small effective population size, and genetic connectivity between populations suggest genetic rescue could mitigate the adverse effect of rarity, divergent selection between populations indicates that genetic mixing could disrupt adaptation. Further work evaluating the fitness consequences of inter-population admixture is necessary to empirically evaluate the trade-offs associated with genetic rescue in Torrey pine.

Investigation Plan to strengthen the Conservation and Management of Estuary Ecosystems

2020 ◽  
Vol 32 (4) ◽  
pp. 317-334
Author(s):  
Jeong-Cheol Lim ◽  
Kyung-Hwan Ahn ◽  
Byeong-Ki Choi ◽  
Gyeong-Yeon Lee
Keyword(s):  
Conservation And Management

Applying radar technology to migratory bird conservation and management: Strengthening and expanding a collaborative

2007 ◽  
Author(s):  
Janet M. Ruth ◽  
Albert Manville ◽  
Ron Larkin ◽  
Wylie C. Barrow ◽  
Lori Johnson-Randall ◽  
...  
Keyword(s):  
Migratory Bird ◽  
Bird Conservation ◽  
Conservation And Management

PERÍODO DE DESOVA E SUCESSO REPRODUTIVO DO TRACAJÁ Podocnemis unifilis TROSCHEL 1848 (TESTUDINES: PODOCNEMIDIDAE) NA VÁRZEA DA RDSM – MÉDIO SOLIMÕES, BRASIL

2008 ◽  
Vol 2 (1) ◽  
pp. 63-75
Author(s):  
Augusto Fachín Terán ◽  
Eduardo Matheus Von Mülhen
Keyword(s):  
Hatching Success ◽  
Management Program ◽  
Nesting Biology ◽  
Sand Beach ◽  
Podocnemis Unifilis ◽  
Turtle Population ◽  
Nesting Beaches ◽  
Conservation And Management ◽  
Tegu Lizard ◽  
Solimões River

In this study the nesting biology of Podocnem is unifilis was investigated from July to November 1998 at the Mamirauá Sustainable Development Reserve, located in the Solimões river, near Tefé, Amazonas, Brazil. Podocnemis unifilis nested in August and September, with the hatching event occurring in October and November. Nests were excavated in clay soils (67.5%), sand (25%), and leaf litter (7.5%). Hatching success was highest in the sand beach nests and lowest in the clay banks nests. Humans and the tegu lizard (Tupinambis) were the main egg predators. This turtle population can recover only by the protection of nesting beaches, educational programs for the in habitants of the Reserve, participation of the community in the conservation and management program , and permanent guarding of the nesting beaches by Instituto Brasileiro do Meio Ambiente e Dos Recursos Naturais Renováveis-IBAMA authorities.

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