The Never Spoken Poignant Connection Between Cuban Tree Snails and Carpentry/Crafts/Art: the case of Polymita and Liguus

The Festivus ◽  
2021 ◽  
Vol 53 (2) ◽  
pp. 128-135
Author(s):  
Adrián González-Guillén ◽  
David Berschauer ◽  
Roberto Pérez-Rivero ◽  
Abelardo Méndez-Hernández

The extinction of endemic Cuban tree snail colonies are shown to be directly caused by habitat fragmentation due to deforestation. Hardwood extraction and exploitation started in the 16 th century and has steadily increased throughout the Cuban archipelago. This article is the first investigation into the connection between overexploitation of natural resources by local communities and the extinction of Cuban tree snail colonies. The authors have compiled a list of 345 hardwood trees species, many of which have been clear cut and over used by Cuban farmers, carpenters, artists and crafts people. Of those hardwood tree species, 84 species are known to be host plants for endemic Cuban Liguus and Polymita tree snails. Since the late 1960s, there has been an accelerated demand for hardwood for traditional craftworks. That demand became more aggressive after the opening of the country to international tourism in the 1990s. This desire for exotic hardwoods has endangered both the precious hardwood tree species and the endemic tree snail species that inhabit them. It is our hope that with the development of field guides on endemic Cuban hardwood tree species that educators can raise awareness of this issue while discouraging unmanaged or uncontrolled harvesting of these hardwoods in Cuba. Encouraging artists and crafts people to create miniature wood sculptures could be an alternative sustainable solution.

2018 ◽  
Vol 9 (1) ◽  
Author(s):  
Joso Vukelić ◽  
Patrik Korijan ◽  
Irena Šapić ◽  
Antun Alegro ◽  
Vedran Šegota ◽  
...  

2020 ◽  
Author(s):  
Charlene N. Kelly ◽  
Geoffrey W. Schwaner ◽  
Jonathan R. Cumming ◽  
Timothy P. Driscoll

AbstractThe soil microbiome plays an essential role in processing and storage of nitrogen (N) and carbon (C), and is influenced by vegetation above-ground through imparted differences in chemistry, structure, mass of plant litter, root physiology, and dominant mycorrhizal associations. We used shotgun metagenomic sequencing and bioinformatic analysis to quantify the abundance and distribution of gene families involved in soil microbial N and C cycling beneath three deciduous hardwood tree species: ectomycorrhizal (ECM)-associated Quercus rubra (red oak), ECM-associated Castanea dentata (American chestnut), and arbuscular mycorrhizal (AM)-associated Prunus serotina (black cherry). Chestnut exhibited the most distinct soil microbiome of the three species, both functionally and taxonomically, with a general suppression of functional genes in the nitrification, denitrification, and nitrate reduction pathways. These changes were related to low inorganic N availability in chestnut stands as soil was modified by poor, low-N litter quality relative to red oak and black cherry soils.IMPORTANCEPrevious studies have used field biogeochemical process rates, isotopic tracing, and targeted gene abundance measurements to study the influence of tree species on ecosystem N and C dynamics. However, these approaches do not enable a comprehensive systems-level understanding of the relationship between microbial diversity and metabolism of N and C below-ground. We analyzed microbial metagenomes from soils beneath red oak, American chestnut, and black cherry stands and showed that tree species can mediate the abundance of key microbial genes involved in N and (to a lesser extent) C metabolism pathways in soil. Our results highlight the genetic framework underlying tree species’ control over soil microbial communities, and below-ground C and N metabolism, and may enable land managers to select tree species to maximize C and N storage in soils.


2019 ◽  
Vol 112 (4) ◽  
pp. 1705-1712 ◽  
Author(s):  
Bernardo L Muatinte ◽  
Johnnie Van den Berg

Abstract Prostephanus truncatus (Horn) (Coleoptera: Bostrichidae) populations are maintained in wild host plants such as trees that act as pest reservoirs from where beetle infestation of maize granaries take place. In this study, we assessed the suitability of plant species sold and transported as firewood as well as other plant species in Mozambique as hosts for P. truncatus. Prostephanus truncatus was only recorded from three tree species, which are sold as firewood, i.e., Brachystegia spiciformis, Strychnos spinosa, and Colophospermum mopane. The pest survived and bred in 13 tree and 7 grass species. Dry wood of several tree species and the grasses Acroceras macrum and Hyparrhenia hirta were suitable hosts for pest development. Sale and transport of certain firewood species may be an important driver of the spread of this pest. The importance of dry maize stalks and several grass species in sustaining pest populations is described for the first time. Several grass species are used as thatch or fencing material and, together with maize crop residues close to small-scale granaries, may provide significant sources of beetle infestation.


1991 ◽  
Vol 67 (3) ◽  
pp. 200-208 ◽  
Author(s):  
Andrew M. Gordon ◽  
Peter A. Williams

Intercropping of hardwood trees with cash crops is an alternative to conventional agriculture and forestry practices that gives flexibility in goals and a potential for gradual changes in land use. Six intercropped plantings have been established in southern Ontario to investigate aspects of tree growth, crop production, and site relationships. This paper reports preliminary results from this research.Important considerations during establishment of an intercropped plantation include: equipment size, cropping methods, competition control and wildlife concerns. Plantings and spraying equipment have primary influence over plantation layout; and mice, groundhogs and deer can cause serious problems in some situations.


1989 ◽  
Vol 19 (2) ◽  
pp. 225-231 ◽  
Author(s):  
Scott A. Enebak ◽  
Robert A. Blanchette

Cerrenaunicolor (Bull.: Fr.) Murr. (= Daedaleaunicolor) (Aphyllophorales, Polyporaceae) was found to cause a canker rot on two northern hardwood tree species, sugar maple (Acersaccharum Marsh.) and paper birch (Betulapapyrifera Marsh.). Pathogenicity of the fungus was determined by inoculation and examination of cankers 6 months, 1.5 years, and 2.5 years later. The two isolates used were found to differ in pathogenicity. Chemical and morphological barriers formed to compartmentalize the fungus. A zone of enhanced cell wall lignification and the formation of suberized impervious cells which composed the necrophylactic periderm in the host were observed. Xylem discoloration, callus formation, and periderm layers were more pronounced in maple than in birch. Cerrenaunicolor moved past host barriers via a mass of hyphae which annually penetrated weak points in the necrophylactic periderm and subsequently killed the adjacent cambium. Once past the necrophylactic periderm and into the xylem, C. unicolor was an aggressive decay organism which caused an extensive white rot. In naturally infected trees, columns of decay were two or three times longer than the cankers. Multiple zones of decayed and discolored wood were present in the xylem as a result of repeated attacks by the fungus.


2010 ◽  
Vol 260 (10) ◽  
pp. 1656-1663 ◽  
Author(s):  
Thomas Buchholz ◽  
Axel Weinreich ◽  
Timm Tennigkeit

2010 ◽  
Vol 76 (12) ◽  
pp. 4063-4075 ◽  
Author(s):  
Michele T. Hoffman ◽  
A. Elizabeth Arnold

ABSTRACT Both the establishment and outcomes of plant-fungus symbioses can be influenced by abiotic factors, the interplay of fungal and plant genotypes, and additional microbes associated with fungal mycelia. Recently bacterial endosymbionts were documented in soilborne Glomeromycota and Mucoromycotina and in at least one species each of mycorrhizal Basidiomycota and Ascomycota. Here we show for the first time that phylogenetically diverse endohyphal bacteria occur in living hyphae of diverse foliar endophytes, including representatives of four classes of Ascomycota. We examined 414 isolates of endophytic fungi, isolated from photosynthetic tissues of six species of cupressaceous trees in five biogeographic provinces, for endohyphal bacteria using microscopy and molecular techniques. Viable bacteria were observed within living hyphae of endophytic Pezizomycetes, Dothideomycetes, Eurotiomycetes, and Sordariomycetes from all tree species and biotic regions surveyed. A focus on 29 fungus/bacterium associations revealed that bacterial and fungal phylogenies were incongruent with each other and with taxonomic relationships of host plants. Overall, eight families and 15 distinct genotypes of endohyphal bacteria were recovered; most were members of the Proteobacteria, but a small number of Bacillaceae also were found, including one that appears to occur as an endophyte of plants. Frequent loss of bacteria following subculturing suggests a facultative association. Our study recovered distinct lineages of endohyphal bacteria relative to previous studies, is the first to document their occurrence in foliar endophytes representing four of the most species-rich classes of fungi, and highlights for the first time their diversity and phylogenetic relationships with regard both to the endophytes they inhabit and the plants in which these endophyte-bacterium symbiota occur.


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