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ArticleAssessment of tropical forest structure, ecological networks, and species extinction in Nigeria lowland forest and Cameroun coastal lowland forest
XV World Forestry Congress, 2-6 May 2022
2022Also available in:
No results found.Tropical forest structure is a significant defining component of the forest, the complex interaction within the components supports a substantial population of flora and fauna besides storing more than half of the terrestrial aboveground biomass. Furthermore, the plants and animal species habiting the tropical forest make up one-third of the world`s biodiversity which also functions as a buffer in shielding humans from zoonotic diseases such as COVID-19. The research was carried out in the Cross River-Korup Taka Manda (CRIKOT) National Park and Omo-Sasha-Oluwa Forest Complex ecoregion which covers southern Nigeria, and southwestern Cameroon. The study estimated carbon stock estimates from 3 -meter quad polarized ALOS 2 PALSAR 2 data, validated the estimates with field measurements and biophysical metrics derived from the Global Ecosystem Dynamics Investigation (GEDI) L2B lidar waveform. This is in addition to the investigation of ecological networks with canopy height metrics, canopy cover metrics Plant Area Diversity (PAD), and Plant Area Index (PAI). The study discovered a mean carbon stock estimate of 136 tonnes /ha-1 from field measurements and a range of 1. 5 to 132 tonnes / ha-1 from SAR. The biophysical metrics from GEDI L2B lidar waveform (Canopy Cover, PAD, PAI, and Canopy Height) describe dense structures with a high level of biodiversity and productivity. These findings could aid in the monitoring of forest productivity and policy goals, as well as considerably improve the depiction of plant canopies in dynamic vegetation and land surface models, allowing us to better understand the carbon cycle and ecological systems. Keywords: Tropical Forest structure, Climate change, Biodiversity conservation, Deforestation and forest degradation, Zoonotic disease, Human health, and well-being. ID: 3476824 -
ArticleVulnerability assessment of Ukrainian forests to climate change as the base of nature-based solutions for mitigation and adaptation
XV World Forestry Congress, 2-6 May 2022
2022Also available in:
No results found.A wide range of climatic conditions in Ukraine causes significant regional differences in the vulnerability of forests to climate change. The mitigation/adaptation strategy should be based on assessments of their vulnerability at the regional level. Phytoindication model by prof. Y.P. Didukh (1994) was used to assess forest vulnerability. The model gives a quantitative estimation of climate as one of major environmental factors affecting the distribution, condition and productivity of vegetation on the base of climate-related indicators – continentality, humidity and frost. For these indicators climate suitability scales were calculated. Modeling was carried out for main forest species: Pinus sylvestris L., Quercus robur L., Fagus sylvatica L., Picea abies (L.) H.Karst, Betula pendula Roth., Alnus glutinosa (L.) Gaertn. and Robinia pseudoacacia L. Climate projections based on the Euro CORDEX time series (up to 2100) and 2 scenarios of the Representative Concentration Pathways (RCP 4.5, RCP 8.5) were used. By means of Q-GIS the maps containing zones of suitability to climate for each of studied species were created for current climate conditions and future time series. The directions for strengthening the mitigation and adaptive capacity of forests are considered. The mainstream for nature-based solutions is adaptive sustainable forest management, which provides: 1)optimization of land use structure and increasing the forested area; 2) development and implementation of a national forestry program considering the priorities of climate change and low-carbon development; 3) using wood to substitute greenhouse gas intensive-materials and fossil fuels; 4) best forestry practices through the introduction of modern Climate Smart Forestry principles. Keywords: RCP 4.5, RCP 8.5, Euro CORDEX, climate trends, adaptive forest management ID: 3487120 -
DocumentA preliminary study on ecological features of two natural enemies against two vectors of pine wilt disease for mass rearing in Korea
XV World Forestry Congress, 2-6 May 2022
2022Also available in:
No results found.Two species of the genus Monochamus (Coleoptera: Cerambycidae), M. alternatus and M. saltuarius are well-known as vectors of the pine wilt disease and they causes economically damages in South Korea. Among various control methods to reduce the density of vectors, a method by biological control agents (natural enemies) is eco-friendly indispensable. Since 2017, we have carried out the studies on the parasitic natural enemies againt for the vector species and found two parasitoids, Spathius verustus Chao, 1977 (Braconidae) and Cyanopterus flavator (Fabricius, 1793) (Bracondiae), would be a useful agents for biological controls. For accumulation of biological data, we conducted a preliminary study on life span and parasitic rate of two parasitic wasps against for two vector species. As results, we found that S. verustus has the longest adult life span of 33.4±19.2 days (avg.) in M. alternatus (T=30°C, H=60%) and C. flavator has the longest adult life span of 25.1±10.6 days (avg.) in M. alternatus (T=25°C, H=60%). The average parasitic rate (62.5%) of S. verustus was highest in M. alternatus (T=30°C, H=60%). In addition, it is confirmed that the offsprings of S. verustus can be made by parthenogenetic reproducton. Keywords: Research ID: 3622037
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