Comprehensive approaches for assessing extinction risk of endangered tropical pitcher plant Nepenthes talangensis.

Autor: Yudaputra A; Research Center for Plant Conservation, Botanic Gardens, and Forestry-National Research and Innovation Agency (BRIN), Bogor, Indonesia., Astuti IP; Research Center for Plant Conservation, Botanic Gardens, and Forestry-National Research and Innovation Agency (BRIN), Bogor, Indonesia., Handayani T; Research Center for Plant Conservation, Botanic Gardens, and Forestry-National Research and Innovation Agency (BRIN), Bogor, Indonesia., Siregar H; Research Center for Plant Conservation, Botanic Gardens, and Forestry-National Research and Innovation Agency (BRIN), Bogor, Indonesia., Robiansyah I; Research Center for Plant Conservation, Botanic Gardens, and Forestry-National Research and Innovation Agency (BRIN), Bogor, Indonesia., Wahyuni S; Research Center for Plant Conservation, Botanic Gardens, and Forestry-National Research and Innovation Agency (BRIN), Bogor, Indonesia., Rachmadiyanto AN; Research Center for Plant Conservation, Botanic Gardens, and Forestry-National Research and Innovation Agency (BRIN), Bogor, Indonesia., Purnomo DW; Research Center for Plant Conservation, Botanic Gardens, and Forestry-National Research and Innovation Agency (BRIN), Bogor, Indonesia., Kurniawan V; Research Center for Plant Conservation, Botanic Gardens, and Forestry-National Research and Innovation Agency (BRIN), Bogor, Indonesia., Isnaini Y; Research Center for Plant Conservation, Botanic Gardens, and Forestry-National Research and Innovation Agency (BRIN), Bogor, Indonesia., Damayanti F; Research Center for Plant Conservation, Botanic Gardens, and Forestry-National Research and Innovation Agency (BRIN), Bogor, Indonesia., Zulkarnaen RN; Research Center for Plant Conservation, Botanic Gardens, and Forestry-National Research and Innovation Agency (BRIN), Bogor, Indonesia., Witono JR; Research Center for Biosystematics and Evolution-National Research and Innovation Agency (BRIN), Bogor, Indonesia., Fijridiyanto IA; Research Center for Biosystematics and Evolution-National Research and Innovation Agency (BRIN), Bogor, Indonesia., Yuzammi; Research Center for Biosystematics and Evolution-National Research and Innovation Agency (BRIN), Bogor, Indonesia., Hidayat A; Research Center for Biosystematics and Evolution-National Research and Innovation Agency (BRIN), Bogor, Indonesia., Siregar M; Research Center for Ecology and Ethnobiology-National Research and Innovation Agency (BRIN), Bogor, Indonesia., Munawaroh E; Research Center for Ecology and Ethnobiology-National Research and Innovation Agency (BRIN), Bogor, Indonesia., Wardhani FA; Research Center for Limnology and Water Resources-National Research and Innovation Agency (BRIN), Bogor, Indonesia., Raharjo PD; Research Center for Geological Resources-National Research and Innovation Agency (BRIN), Bogor, Indonesia., Widiana A; Faculty of Science and Technology, UIN Sunan Gunung Djati Bandung, Bandung, Indonesia., Cropper WP Jr; School of Forest, Fisheries, and Geomatics Sciences, University of Florida, Gainesville, FL United States of America.
Jazyk: angličtina
Zdroj: PloS one [PLoS One] 2023 Aug 07; Vol. 18 (8), pp. e0289722. Date of Electronic Publication: 2023 Aug 07 (Print Publication: 2023).
DOI: 10.1371/journal.pone.0289722
Abstrakt: It has been 23 years since the conservation status of highland tropical pitcher plant Nepenthes talangensis was assessed in 2000. A number of existing threats (anthropogenic and environmental) may be increasing the risk of extinction for the species. A better understanding of the ecology and conservation needs of the species is required to manage the wild populations. Specifically, better information related to population distributions, ecological requirements, priority conservation areas, the impact of future climate on suitable habitat, and current population structure is needed to properly assess extinction risks. A better understanding of the requirements of the species in its natural habitat would benefit for successfully securing the species at Botanic Gardens. We have identified 14 new occurrence records of N. talangensis in Mount Talang. Study on the ecological requirement using Random Forest (RF) and Artificial Neural Network (ANN) suggested that elevation, canopy cover, soil pH, and slope are four important variables. The population of N. talangensis was dominated by juvenile and mature (sterile) individuals, we found only a few mature males (7 individuals) and females (4 individuals) in the sampled areas. Our modelling of current conditions predicted that there were 1,076 ha of suitable habitat to very highly suitable habitat in Mount Talang, which is 14.7% of the total area. Those predicted habitats ranged in elevation from 1,740-2,558 m. Suitable habitat in 2100 was predicted to decrease in extent and be at higher elevation in the less extreme climate change scenario (SSP 1-2.6) and extreme climate change scenario (SSP 5-8.5). We projected larger habitat loss in the SSP 5-8.5 compared to the SSP 1-2.6 climate change scenario.. We proposed the category CR B1ab(iii,v), C2a(ii) as the new conservation status of N. talangensis. The status is a higher category of threat compared to the current status of the species (EN C2b, ver 2.3). Nepenthes talangensis seedlings and cuttings established in a Botanic Garden have relatively high survival rate at about 83.4%. Sixty percent of the seeds germinated in growth media successfully grew to become seedlings.
Competing Interests: The authors have declared that no competing interests exist.
(Copyright: © 2023 Yudaputra et al. This is an open access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.)
Databáze: MEDLINE
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