scholarly journals Symbiotic Interaction Enhances the Recovery of Endangered Tree Species in the Fragmented Maulino Forest

2021 ◽  
Vol 12 ◽  
Author(s):  
Cristian Torres-Díaz ◽  
Moisés A. Valladares ◽  
Ian S. Acuña-Rodríguez ◽  
Gabriel I. Ballesteros ◽  
Andrea Barrera ◽  
...  
Keyword(s):  
Water Use ◽  
Tree Species ◽  
Fungal Endophytes ◽  
Transplant Experiment ◽  
Endangered Tree ◽  
Plant Survival ◽  
Root Endophytes ◽  
Endangered Tree Species ◽  
Distributional Range ◽  
Maulino Forest

Beneficial plant-associated microorganisms, such as fungal endophytes, are key partners that normally improve plant survival under different environmental stresses. It has been shown that microorganisms from extreme environments, like those associated with the roots of Antarctica plants, can be good partners to increase the performance of crop plants and to restore endangered native plants. Nothofagus alessandrii and N. glauca, are among the most endangered species of Chile, restricted to a narrow and/or limited distributional range associated mainly to the Maulino forest in Chile. Here we evaluated the effect of the inoculation with a fungal consortium of root endophytes isolated from the Antarctic host plant Colobanthus quitensis on the ecophysiological performance [photosynthesis, water use efficiency (WUE), and growth] of both endangered tree species. We also, tested how Antarctic root-fungal endophytes could affect the potential distribution of N. alessandrii through niche modeling. Additionally, we conducted a transplant experiment recording plant survival on 2 years in order to validate the model. Lastly, to evaluate if inoculation with Antarctic endophytes has negative impacts on native soil microorganisms, we compared the biodiversity of fungi and bacterial in the rhizospheric soil of transplanted individuals of N. alessandrii inoculated and non-inoculated with fungal endophytes. We found that inoculation with root-endophytes produced significant increases in N. alessandrii and N. glauca photosynthetic rates, water use efficiencies and cumulative growth. In N. alessandrii, seedling survival was significantly greater on inoculated plants compared with non-inoculated individuals. For this species, a spatial distribution modeling revealed that, inoculation with root-fungal endophytes could potentially increase the current distributional range by almost threefold. Inoculation with root-fungal endophytes, did not reduce native rhizospheric microbiome diversity. Our results suggest that the studied consortium of Antarctic root-fungal endophytes improve the ecophysiological performance as well as the survival of inoculated trees and can be used as a biotechnological tool for the restoration of endangered tree species.

Floristic Variation of Tree Communities and Their Association with Soil Properties in Pulau Jerejak, Penang, Peninsular Malaysia

2020 ◽  
Vol 14 (1) ◽  
pp. 34
Author(s):  
Faezah Pardi
Keyword(s):  
Tree Species ◽  
Diversity Index ◽  
Basal Area ◽  
Peninsular Malaysia ◽  
Importance Value ◽  
Conservation Action ◽  
Endangered Tree ◽  
Endangered Tree Species ◽  
Tree Communities ◽  
Floristic Variation

This study was conducted at Pulau Jerejak, Penang to determine the floristic variation of its tree communities. A 0.5-hectare study plot was established and divided into 11 subplots. A total of 587 trees with diameter at breast height (DBH) of 5 cm and above were measured, identified and recorded. The tree communities comprised of 84 species, 63 genera and 32 families. The Myrtaceae was the most speciose family with 10 recorded species while Syzgium glaucum (Myrtaceae) was the most frequent species. The Myrtaceae recorded the highest density of 306 individuals while Syzgium glaucum (Myrtaceae) had the highest species density of 182 individuals. Total tree basal area (BA) was 21.47 m2/ha and family with the highest BA was Myrtaceae with 5.81 m2/ha while at species level, Syzgium glaucum (Myrtaceae) was the species with the highest total BA in the plot with value of 4.95 m2/ha. The Shannon˗Weiner Diversity Index of tree communities showed a value of 3.60 (H'max = 4.43) and Evenness Index of 0.81 which indicates high uniformity of tree species. The Margalef Richness Index (R') revealed that the tree species richness was 13.02. Myrtaceae had the highest Importance Value of 20.4%. The Canonical Correspondence Analysis (CCA) showed that Diospyros buxifolia (Ebenaceae) and Pouteria malaccensis (Sapotaceae) were strongly correlated to low pH. Dysoxylum cauliflorum (Meliaceae) and Eriobotrya bengalensis (Rosaceae) were correlated to phosphorus (P) and calcium ion (Ca2+), respectively. Therefore, the trees species composition at Pulau Jerejak showed that the biodiversity is high and conservation action should be implemented to protect endangered tree species. Keywords: Floristic variation; Tree communities; Trees composition; Pulau Jerejak; Species diversity

Somatic embryogenesis and plantlet formation from a rare and endangered tree species,Oplopanax elatus

2006 ◽  
Vol 49 (4) ◽  
pp. 320-325 ◽  
Author(s):  
Heung Kyu Moon ◽  
Ji Ah Kim ◽  
So Young Park ◽  
Yong Wook Kim ◽  
Ho Duck Kang
Keyword(s):  
Somatic Embryogenesis ◽  
Tree Species ◽  
Endangered Tree ◽  
Endangered Tree Species ◽  
Plantlet Formation ◽  
Rare And Endangered ◽  
Oplopanax Elatus

Indopiptadenia Oudhensis (Brandis) Brenan an Endangered Tree Species: Measures for the Coservation

2014 ◽  
Vol 37 (1) ◽  
pp. 69-72
Author(s):  
Giriraj Panwar ◽  
Kumar Ambrish ◽  
S. Srivastava
Keyword(s):  
Seed Germination ◽  
Tree Species ◽  
Seed Viability ◽  
Habitat Destruction ◽  
Anthropogenic Pressure ◽  
Endangered Tree ◽  
Endangered Tree Species ◽  
Poor Seed ◽  
Over Exploitation

Indopiptadenia oudhensis (Brandis) Brenan is an endangered tree species of family Mimosaceae. Species is mainly distributed at Indo-Nepal border and facing threats such as anthropogenic pressure, habitat destruction, over exploitation, low seed viability and poor seed germination.

Genetic Diversity of Dalbergia monticola (Fabaceae) an Endangered Tree Species in the Fragmented Oriental Forest of Madagascar

2006 ◽  
Vol 15 (4) ◽  
pp. 1109-1128 ◽  
Author(s):  
Olivarimbola Andrianoelina ◽  
Hery Rakotondraoelina ◽  
Lolona Ramamonjisoa ◽  
Jean Maley ◽  
Pascal Danthu ◽  
...  
Keyword(s):  
Genetic Diversity ◽  
Tree Species ◽  
Endangered Tree ◽  
Endangered Tree Species

scholarly journals A sound track to ecological crisis: tracing guitars all the way back to the tree

Popular Music ◽  
2019 ◽  
Vol 38 (2) ◽  
pp. 183-203 ◽  
Author(s):  
Chris Gibson
Keyword(s):  
Tree Species ◽  
Musical Instruments ◽  
Ecological Crisis ◽  
Environmental Crisis ◽  
Environmental Concerns ◽  
Endangered Tree ◽  
Sound Track ◽  
Endangered Tree Species ◽  
Project Tracing ◽  
The Way

AbstractAnalyses of music and environment are proliferating, yet new conceptions are needed to make sense of growing ecological crisis in the Anthropocene. From an empirical project tracing guitars all the way back to the tree, I argue for deeper conceptual and empirical integration of music into the material and visceral processes that constitute ecological crisis itself. Musicians are not only inspired by environmental concerns for compositional or activist purposes. They are entangled in environmental crisis through material and embodied relations with ecosystems, especially via the musical instruments we depend upon. I foreground three ‘more-than-musical’ themes to make sense of unfurling forces: materiality, corporeality and volatility. Musical instruments are gateway objects that invite contemplation of material and corporal relations. Such relations bind together musicians and non-human others. Material and corporeal relations with increasingly threatened upstream forests, and endangered tree species, are being confronted and reconfigured. In the context of ecological crisis, guitars do much more than make pleasing acoustic sounds. Via guitars we co-generate, with non-human others, a sound track of crisis both melancholy and hopeful.

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