scholarly journals Native Species Valuable timber plantations in Northern Guatemalan Humid Lowlands: ecological features and silvicultural feasibility

2018 ◽  
Vol 5 (2) ◽  
pp. 136-150
Author(s):  
Boris A. Mendez-Paiz ◽  
Adrián Serech-Van Haute
Keyword(s):  
Native Species ◽  
Timber Species ◽  
Cordia Alliodora ◽  
Ecological Requirements ◽  
The North ◽  
Ecological Features ◽  
Study Zone ◽  
Timber Plantations ◽  
Humid Lowlands

The North Humid Guatemalan Lowlands contains a significant diversity of tree species, incluiding some valuable-timber producers; these species are threatened by commercial overexploitation and habitat loss due to deforestation. The cultivation of these species in forest and agroforest plantations is a potentially viable optiontheir conservation and commercial harvesting, something that has been promoted with Government Incetemala during the past two decades. However, these species have not been widely planted, among othebecause knowledge on their ecological requirements and silviculture is scarce. A characterization of momixed plantations with 14 native valuable-timber species was made in the Humid Lowlands of Northeranalyzing for each species frequency of association and accompanying species, planted area, the main etures and growth rates. To gather information, we combined field observation and measurements with iliterature review. Based on our survey, main management challenges for cultivation of the species were described. Valuable-timber native trees could potentially be sustainably cultivated in the study zone in diffforest plantations and agroforestry schemes of coffee, cacao, cardamom and cattle; considering their suitdiversified systems, growth performance and farmer’s preferences, Swietenia macrophylla, Cedrela odordonnell-smithii, Calophyllum brasiliense and Cordia alliodora were the species with the higher potentiain plantations. However, several unsolved problems continue restricting the cultivation of these species itherefore, is essential a careful design and management.

Forest ecological restoration using native species in the North-West of Tunisia: a brand new experience of participatory approach.

2019 ◽  
Vol 45 (1) ◽  
pp. 75-84
Author(s):  
Issam Touhami ◽  
Ali El khorchani ◽  
Zouheir Nasr ◽  
Mohamed tahar Elaieb ◽  
Touhami Rzigui ◽  
...  
Keyword(s):  
Ecological Restoration ◽  
Native Species ◽  
Participatory Approach ◽  
North West ◽  
The North

Molecular Characterization of Novel Porcine Circovirus 3 (PCV3) in Pig Populations in the North of Vietnam

2018 ◽  
Vol 1 (1) ◽  
Author(s):  
Nguyen Van Giap ◽  
Chung Hee Chun ◽  
Huynh Thi My Le ◽  
Cao Thi Bich Phuong ◽  
Vu Thi Ngoc ◽  
...  
Keyword(s):  
Molecular Characterization ◽  
Porcine Circovirus ◽  
The North ◽  
Porcine Circovirus 3

scholarly journals Size-resolved characterization of organic aerosol in the North China Plain: new insights from high resolution spectral analysis

2021 ◽  
Author(s):  
Weiqi Xu ◽  
Chun Chen ◽  
Yanmei Qiu ◽  
Conghui Xie ◽  
Yunle Chen ◽  
...  
Keyword(s):  
Radiative Forcing ◽  
North China Plain ◽  
North China ◽  
Fine Particles ◽  
Large Fraction ◽  
Organic Aerosol ◽  
Size Distributions ◽  
The North ◽  
The Impact

Organic aerosol (OA), a large fraction of fine particles, has a large impact on climate radiative forcing and human health, and the impact depends strongly on size distributions. Here we...

scholarly journals Biogeographic Distribution of Cedrela spp. Genus in Peru Using MaxEnt Modeling: A Conservation and Restoration Approach

Diversity ◽  
2021 ◽  
Vol 13 (6) ◽  
pp. 261
Author(s):  
Alexander Cotrina Sánchez ◽  
Nilton B. Rojas Briceño ◽  
Subhajit Bandopadhyay ◽  
Subhasis Ghosh ◽  
Cristóbal Torres Guzmán ◽  
...  
Keyword(s):  
Endangered Species ◽  
Protected Areas ◽  
Native Species ◽  
Timber Species ◽  
National Service ◽  
Natural Forests ◽  
Entropy Model ◽  
Probability Of Occurrence ◽  
Bioclimatic Variables ◽  
Population Sizes

The increasing demand for tropical timber from natural forests has reduced the population sizes of native species such as Cedrela spp. because of their high economic value. To prevent the decline of population sizes of the species, all Cedrela species have been incorporated into Appendix II of the Convention on International Trade in Endangered Species of Wild Fauna and Flora (CITES). The study presents information about the modeled distribution of the genus Cedrela in Peru that aims to identify potential habitat distribution of the genus, its availability in areas protected by national service of protected areas, and highlighted some areas because of their conservation relevance and the potential need for restoration. We modeled the distribution of the genus Cedrela in Peru using 947 occurrence records that included 10 species (C. odorata, C. montana, C. fissilis, C. longipetiolulata, C. angustifolia, C. nebulosa, C. kuelapensis, C. saltensis, C. weberbaueri, and C. molinensis). We aim to identify areas environmentally suitable for the occurrence of Cedrela that are legally protected by the National Service of Protected Areas (PAs) and those that are ideal for research and restoration projects. We used various environmental variables (19 bioclimatic variables, 3 topographic factors, 9 edaphic factors, solar radiation, and relative humidity) and the maximum entropy model (MaxEnt) to predict the probability of occurrence. We observed that 6.7% (86,916.2 km2) of Peru presents a high distribution probability of occurrence of Cedrela, distributed in 17 departments, with 4.4% (10,171.03 km2) of the area protected by PAs mainly under the category of protection forests. Another 11.65% (21,345.16 km2) of distribution covers areas highly prone to degradation, distributed mainly in the departments Ucayali, Loreto, and Madre de Dios, and needs immediate attention for its protection and restoration. We believe that the study will contribute significantly to conserve Cedrela and other endangered species, as well as to promote the sustainable use and management of timber species as a whole.

scholarly journals Melliferous flora and pollen characterization of honey samples of Apis mellifera L., 1758 in apiaries in the counties of Ubiratã and Nova Aurora, PR

2013 ◽  
Vol 85 (1) ◽  
pp. 307-326 ◽  
Author(s):  
ELIZABETE S. SEKINE ◽  
VAGNER A.A. TOLEDO ◽  
MARCELO G. CAXAMBU ◽  
SUZANE CHMURA ◽  
ELIZA H. TAKASHIBA ◽  
...  
Keyword(s):  
Glycine Max ◽  
Apis Mellifera ◽  
Native Species ◽  
Ricinus Communis ◽  
Cultivated Plants ◽  
Melia Azedarach ◽  
Native Vegetation ◽  
Pollen Types ◽  
Pollen Analyses

The aim of this study was to carry out a survey of the flora with potential for beekeeping in the counties of Ubiratã and Nova Aurora-PR through the collection of plants and pollen analyses in honey samples collected monthly. 208 species of plants were recorded, distributed in 66 families. The families that showed the major richness of pollen types were: Asteraceae, Myrtaceae and Solanaceae. Approximately 80 pollen types were found in honey samples, most of them were characterized as heterofloral. Cultivated plants, such as Glycine max (soybean) and Eucalyptus spp., were representative in some months of the year. Exotic species, such as Ricinus communis and Melia azedarach, were also frequent. However, over than 50% of the pollen types belong to native species of the region, such as Schinus terebinthifolius, Baccharis spp. Alchornea triplinervia, Parapiptadenia rigida, Hexaclamys edulis, Zanthoxylum sp. and Serjania spp., indicating the importance of the native vegetation for the survival of the colonies.

Sign in / Sign up

Export Citation Format

Share Document