scholarly journals Germination and seed traits in common alder ( Alnus spp.): The potential contribution of rear‐edge populations to ecological restoration success

2021 ◽  
Author(s):  
I. Gomes Marques ◽  
C. Faria ◽  
S. I. R. Conceição ◽  
R. Jansson ◽  
T. Corcobado ◽  
...  
Keyword(s):  
Ecological Restoration ◽  
Potential Contribution ◽  
Seed Traits ◽  
Rear Edge ◽  
Restoration Success ◽  
Edge Populations

Ecological restoration success from community and agency perspectives – exploring the differences

2021 ◽  
Author(s):  
Mel Galbraith ◽  
David R. Towns ◽  
Barbara Bollard‐Breen ◽  
Edith A. MacDonald
Keyword(s):  
Ecological Restoration ◽  
Restoration Success

scholarly journals Hyrcanian forests-Stable rear-edge populations harbouring high genetic diversity of Fraxinus excelsior, a common European tree species

2018 ◽  
Vol 24 (11) ◽  
pp. 1521-1533 ◽  
Author(s):  
Eva Ortvald Erichsen ◽  
Katharina Birgit Budde ◽  
Khosro Sagheb-Talebi ◽  
Francesca Bagnoli ◽  
Giovanni Giuseppe Vendramin ◽  
...  
Keyword(s):  
Genetic Diversity ◽  
Tree Species ◽  
Fraxinus Excelsior ◽  
High Genetic Diversity ◽  
Hyrcanian Forests ◽  
Rear Edge ◽  
Edge Populations

scholarly journals Unprecedented herbivory threatens rear‐edge populations of Betula in southwestern Eurasia

Ecology ◽  
2019 ◽  
Vol 100 (11) ◽  
Author(s):  
César Morales‐Molino ◽  
Willy Tinner ◽  
Ramón Perea ◽  
José S. Carrión ◽  
Daniele Colombaroli ◽  
...  
Keyword(s):  
Rear Edge ◽  
Edge Populations

Restoration of Ecosystem Services for Environmental Markets

Science ◽  
2009 ◽  
Vol 325 (5940) ◽  
pp. 575-576 ◽  
Author(s):  
Margaret A. Palmer ◽  
Solange Filoso
Keyword(s):  
Ecosystem Services ◽  
Ecological Restoration ◽  
Direct Measurement ◽  
Environmental Degradation ◽  
Ecosystem Service ◽  
Environmental Markets ◽  
New Science ◽  
Restoration Success ◽  
Future Success ◽  
Biophysical Processes

Ecological restoration is an activity that ideally results in the return of an ecosystem to an undisturbed state. Ecosystem services are the benefits humans derive from ecosystems. The two have been joined to support growing environmental markets with the goal of creating restoration-based credits that can be bought and sold. However, the allure of these markets may be overshadowing shortcomings in the science and practice of ecological restoration. Before making risky investments, we must understand why and when restoration efforts fall short of recovering the full suite of ecosystem services, what can be done to improve restoration success, and why direct measurement of the biophysical processes that support ecosystem services is the only way to guarantee the future success of these markets. Without new science and an oversight framework to protect the ecosystem service assets which people depend, markets could actually accelerate environmental degradation.

scholarly journals Interspecific gene flow and vicariance in Northern African rear-edge white oak populations revealed by joint analysis of microsatellites and flanking sequences.

2021 ◽  
Author(s):  
Lepais Olivier ◽  
Abdeldjalil Aissi ◽  
Errol Véla ◽  
Yassine Beghami
Keyword(s):  
Gene Flow ◽  
Genetic Differentiation ◽  
Population Size ◽  
Evolutionary History ◽  
Evolutionary Significance ◽  
Interspecific Gene Flow ◽  
Continental Scale ◽  
Rear Edge ◽  
Flanking Sequences ◽  
Edge Populations

Rear-edge populations represent reservoirs of potentially unique genetic diversity but are particularly vulnerable to global changes. While continental-scale phylogeographic studies usually do not cover these populations, more focused local scale study of rear-edge populations should help better understand both past evolutionary history and its consequences for the persistence and conservation of these potentially unique populations. We studied molecular variation at 36 sequenced nuclear microsatellites in 11 rear-edge Quercus faginea and Q. canariensis populations across Algeria to shed light on taxonomic relationship, population past evolutionary history and recent demographic trajectory. We used descriptive approach and simulation-based inference to assess the information content and complementarity of linked microsatellite and flanking sequence variations. Genetic differentiation among populations classified into eight well-defined genetic clusters do not allow to unambiguously delineate two species. Instead, continuous level of genetic differentiation indicates interspecific gene flow or drift in isolation. Whereas the analysis of microsatellite variation allowed inferring recent interspecific gene flow, additional nucleotide variation in flanking sequences, by reducing homoplasy, pointed towards ancient interspecific gene flow followed by drift in isolation. The assessment of the weight of each polymorphism in the inference demonstrates the value of linked variation with contrasted mutational mechanisms and rates to refine historical demographic inference. Past population size decline inferred in some of these oak populations as well as low contemporary effective population size for most populations is a concern for the persistence of these populations of high evolutionary significance and conservation value.

scholarly journals Coexisting oak species, including rear-edge populations, buffer climate stress through xylem adjustments

2017 ◽  
Vol 38 (2) ◽  
pp. 159-172 ◽  
Author(s):  
E Granda ◽  
A Q Alla ◽  
N A Laskurain ◽  
J Loidi ◽  
A Sánchez-Lorenzo ◽  
...  
Keyword(s):  
Rear Edge ◽  
Climate Stress ◽  
Edge Populations
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