scholarly journals Pervasive admixture between eucalypt species has consequences for conservation and assisted migration

2019 ◽  
Vol 12 (4) ◽  
pp. 845-860 ◽  
Author(s):  
Brenton Takach Dukai ◽  
Cameron Jack ◽  
Justin Borevitz ◽  
David B. Lindenmayer ◽  
Sam C. Banks
Keyword(s):  
Assisted Migration ◽  
Eucalypt Species

The future of research with carnivorous plants

2018 ◽  
Author(s):  
Aaron M. Ellison ◽  
Lubomír Adamec
Keyword(s):  
Natural Selection ◽  
Population Biology ◽  
Field Experiments ◽  
Evolutionary Dynamics ◽  
Species Concept ◽  
Intraspecific Variability ◽  
Carnivorous Plants ◽  
Assisted Migration ◽  
Transcriptomic Data ◽  
Phylogenetic Framework

The material presented in the chapters of Carnivorous Plants: Physiology, Ecology, and Evolution together provide a suite of common themes that could provide a framework for increasing progress in understanding carnivorous plants. All speciose genera would benefit from more robust, intra-generic classifications in a phylogenetic framework that uses a unified species concept. As more genomic, proteomic, and transcriptomic data accrue, new insights will emerge regarding trap biochemistry and regulation; interactions with commensals; and the importance of intraspecific variability on which natural selection works. Continued elaboration of field experiments will provide new insights into basic physiology; population biology; plant-animal and plant-microbe relationships; and evolutionary dynamics, all of which will aid conservation efforts and contribute to discussions of assisted migration as the climate continues to change.

Explaining Resistance to Early Nineteenth-Century British Emigrants to New South Wales

2021 ◽  
Vol 7 (1) ◽  
pp. 1-23
Author(s):  
Melanie Burkett
Keyword(s):  
New South ◽  
New South Wales ◽  
Assisted Migration ◽  
British Government ◽  
Early Nineteenth Century ◽  
Public Rhetoric ◽  
Labour Shortage ◽  
South Wales ◽  
Persistent Pattern ◽  
Political Economic

Abstract In the 1830s, the British government commenced a programme of relocating poor labourers to its Australian colony of New South Wales, a practice known as ‘assisted migration’. Though intended to address the colony’s labour shortage, the new arrivals were met with hostility by the colonial elite, who claimed the immigrants were immoral and unsuitable as workers. While migration historians have shown these judgements to be largely unfair, the forces underpinning these perceptions await a thorough interrogation. This article examines colonial public rhetoric about immigration to reveal attitudes shaped by a tangle of overlapping and reinforcing political, economic, and cultural factors. Ultimately, the colonial elite wanted to control who could enter their community, both physically and socially, which became a temporally persistent pattern vital to the settler colonial project.

scholarly journals Reestablishing a stepping-stone population of the threatened elkhorn coral Acropora palmata to aid regional recovery

2020 ◽  
Vol 43 ◽  
pp. 461-473
Author(s):  
IB Kuffner ◽  
A Stathakopoulos ◽  
LT Toth ◽  
LA Bartlett
Keyword(s):  
Local Adaptation ◽  
Genetic Effect ◽  
Florida Keys ◽  
Gauge Potential ◽  
Acropora Palmata ◽  
Assisted Migration ◽  
Western Atlantic ◽  
Genetic Strains ◽  
Entire Experiment ◽  
Migration Experiment

Recovery of the elkhorn coral Acropora palmata is critical to reversing coral reef ecosystem collapse in the western Atlantic, but the species is severely threatened. To gauge potential for the species’ restoration in Florida, USA, we conducted an assisted migration experiment where 50 coral fragments of 5 nursery-raised genetic strains (genets) from the upper Florida Keys were moved to 5 sites across 350 km of the offshore reef. Additionally, 4 fragments from the 1 remaining colony of A. palmata in Dry Tortugas National Park (DRTO) were added to the 2 DRTO experimental sites to test for local adaptation. To measure coral performance, we tracked coral survival, calcification, growth, and condition from May 2018 to October 2019. All 24 corals relocated to the DRTO sites survived and calcified ~85% faster than the fewer surviving corals transplanted to the 2 upper Keys sites. While coral survival across the entire experiment did not depend on genet, there was a weak but statistically significant genetic effect on calcification rate among the corals relocated to DRTO. The DRTO native genet was among the fastest growing genets, but it was not the fastest, suggesting a lack of local adaptation at this scale. Our results indicate that DRTO, a remote reef system inhabited by the species during the Holocene and located at the nexus of major ocean currents, may be a prime location for reestablishing A. palmata. Assisted migration of A. palmata to DRTO could restore a sexually reproducing population in <10 yr, thereby promoting the species’ regional recovery.

scholarly journals Voľba lesného reprodukčného materiálu v podmienkach klimatickej zmeny / Choice of forest reproductive material under conditions of climate change

2015 ◽  
Vol 61 (2) ◽  
pp. 124-130 ◽  
Author(s):  
Dušan Gömöry ◽  
Roman Longauer ◽  
Diana Krajmerová
Keyword(s):  
Climate Change ◽  
Tree Species ◽  
Climatic Factors ◽  
Climate Scenario ◽  
Population Variation ◽  
Stress Factors ◽  
Information Uncertainty ◽  
Assisted Migration ◽  
Forest Reproductive Material ◽  
Reproductive Material

AbstractClimate change may endanger not only yield and fulfilling the social functions of European forests, but even the survival of several tree species. The study emphasises the complexity of climatic factors and physiological mechanisms, which may potentially endanger the persistence of tree populations and which cannot be reduced to problems of drought and temperature increase. A substantial inter-population variation in traits associated with the response to climatic stress, observed in provenance experiments, is a prerequisite for the choice of proper forest reproductive material (FRM) in reforestation as a strategy of climate-change mitigation. Assisted migration, i.e., transfer of FRM from source regions, currently characterised by such climate characteristics, which are expected in the target regions in the future, requires knowledge of key stress factors (depending on the climate scenario), physiological processes associated with the adaptation to this stress, identification of genes and eventually epigenetic mechanisms, controlling adaptation processes, and finally mapping of genetic and/or epigenetic variation in key genes. For most tree species, such information is not yet available. Therefore, assisted migration under such information uncertainty needs to be complemented by in situ gene conservation measures to preserve the possibility of reversing the effects of eventual erroneous decisions on FRM transfer.

Gene Flow, Spatial Structure, Local Adaptation, and Assisted Migration in Trees

2012 ◽  
pp. 71-116 ◽  
Author(s):  
Konstantin V. Krutovsky ◽  
Jaroslaw Burczyk ◽  
Igor Chybicki ◽  
Reiner Finkeldey ◽  
Tanja Pyhäjärvi ◽  
...  
Keyword(s):  
Gene Flow ◽  
Spatial Structure ◽  
Local Adaptation ◽  
Assisted Migration
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