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Search Word: Forest restoration, Search Result: 3
1
Seongjun Kim(Division of Restoration Research, Restoration Center for Endangered Species, National Institute of Ecology) ; Chang-Woo Lee(Division of Restoration Research, Restoration Center for Endangered Species, National Institute of Ecology) ; Hwan-Joon Park(Division of Restoration Research, Restoration Center for Endangered Species, National Institute of Ecology) ; Byoung-Doo Lee(Division of Restoration Research, Restoration Center for Endangered Species, National Institute of Ecology) ; Jung Eun Hwang(Division of Restoration Research, Restoration Center for Endangered Species, National Institute of Ecology) ; Jiae An(Division of Restoration Research, Restoration Center for Endangered Species, National Institute of Ecology) ; Hyung Bin Park(Division of Restoration Research, Restoration Center for Endangered Species, National Institute of Ecology) ; Ju Hyeong Baek(Division of Restoration Research, Restoration Center for Endangered Species, National Institute of Ecology) ; Pyoung Beom Kim(Division of Restoration Research, Restoration Center for Endangered Species, National Institute of Ecology) ; Nam Young Kim(Division of Restoration Research, Restoration Center for Endangered Species, National Institute of Ecology) 2021, Vol.2, No.1, pp.70-75 https://doi.org/10.22920/PNIE.2021.2.1.70
초록보기
Abstract

The present study aimed to clarify flora living at the area of Restoration Center for Endangered Species in Yeongyang, Gyeongbuk Province. In May, August, and September 2019 and in May and July 2020, all of vascular plants were recorded, and endangered, Korea endemic, and exotic plant species were further identified. The study site contained a total of 418 floral taxa (98 families, 261 genera, 384 species, 4 subspecies, 27 variations, and 3 formations), in which Magnoliophyta accounted for larger proportion (95.2%) than Pteridophyta (3.6%) and Pinophyta (1.2%). In addition, 1 endangered (Cypripedium macranthos Sw.) and 5 Korea endemic species (Aconitum pseudolaeve Nakai, Eleutherococcus divaricatus var. chiisanensis [Nakai] C.H. Kim & B.-Y. Sun, Lonicera subsessilis Rehder, Paulownia coreana Uyeki, and Weigela subsessilis [Nakai] L.H. Bailey) were detected. The number of exotic species was 33, consisting of 4 invasive-exotic, 4 potentially invasive-exotic, and 25 non-invasive species. Compared to a previous assessment before the establishment of the center (in 2014), there were increases in total floral taxa (from 361 to 418), endangered species (from 0 to 1), and exotic species (from 26 to 33). These results possibly reflect temporal changes in floral community, which should be confirmed through subsequent long term monitoring.


2
Janford B. Galano(Institute of Biology, University of the Philippines) ; Lillian Jennifer Rodriguez(Institute of Biology, University of the Philippines) 2021, Vol.2, No.2, pp.76-81 https://doi.org/10.22920/PNIE.2021.2.2.76
초록보기
Abstract

With continuous decline of Philippine forest cover, sustainable forest management and restoration are essential to restore destroyed forest ecosystems. Unfortunately, of ten most planted trees in reforestation projects in the Philippines, eight are exotic species, with large leaf mahogany (Swietenia macrophylla) being the most dominant. In this study, effect of Swietenia macrophylla in reforestation projects on native tree species was evaluated. Effects of S. macrophylla leaf litter, frequency, and canopy closure on the growth of the Philippine native species Pterocarpus indicus were investigated. Results showed that S. macrophylla leaf litter significantly inhibited the growth of P. indicus seedlings based on root collar-to-shoot height. The standardized growth rate of seedlings in plots without S. macrophylla leaf litter was significantly higher than the growth rate of seedlings in plots with leaf litter. Furthermore, there was no significant difference in the standardized growth rate of seedlings between plots without leaf litter and a control plot. On the contrary, S. macrophylla tree frequency and canopy closure showed no significant effect. These results attest to the negative effect of widely planted S. macrophylla to a valuable Philippine native tree P. indicus. With accumulating scientific evidence about negative effects of S. macrophylla on native trees, discontinued use in tree planting and reforestation efforts with active management of restoration sites previously planted with large leaf mahogany are needed.


3
Giancarlo Pocholo L. Enriquez(Institute of Biology, University of the Philippines) ; Lillian Jennifer V. Rodriguez(Institute of Biology, University of the Philippines) 2023, Vol.4, No.1, pp.28-42 https://doi.org/10.22920/PNIE.2023.4.1.28
초록보기
Abstract

Seed dispersal supports community structure, maintains genetic connectivity across fragmented landscapes, and influences vegetation assemblages. In the Philippines, only two seed dispersal studies have compared different dispersal agents. We examined the seed dispersal patterns of water, wind, birds, and bats in the Caliraya Watershed, Philippines. We aimed to determine the floral species that were dispersed and how the forest characteristics influenced seed dispersal. By running seed rain traps and drift litter collection from March to June 2022, we analyzed 14,090 seeds in a privately owned study site within the watershed. Water did not exclusively disperse any species and acted as a secondary disperser. Seed density (seeds/trap) was significantly higher for bird-dispersed (n=166) and bat-dispersed (n=145) seeds than for wind-dispersed (n=79) seeds (One-way analysis of variance [ANOVA]: F2,87=16.21, P<0.0001). Species number (species/trap) was significantly higher for bird-dispersed (n=3.7) and bat-dispersed (n=3.9) seeds than for wind-dispersed (n=0.2) seeds (One-way ANOVA: F2,87=16.67, P<0.0001). Birds dispersed more species because they are more diverse and access a wider variety of fruits, unlike bats. Birds and bats target different fruits and provide separate seed dispersal services. Generalized linear model analyses revealed that the number and basal area of fleshy fruit trees most strongly influenced the bird seed dispersal patterns. Therefore, we recommend a three-way approach to restoration efforts in the Caliraya Watershed: (1) ensure the presence of fleshy fruit trees in restoration zones, (2) assist the establishment of mid-successional and wind-dispersed trees, and (3) intensify the conservation efforts for both flora and faunal diversity.


Proceedings of the National Institute of Ecology of the Republic of Korea