Primary vegetation recovery following fifteen years of alien plant control on the subtropical oceanic island of Anijima, Ogasawara

Tomohiro Seto; Fumito Koike

doi:10.51094/jxiv.2057

##article.authors##

Tomohiro Seto Graduate School of Environment and Information Sciences, Yokohama National University ; Japan Forest Technology Association, Forest infomation Group https://orcid.org/0009-0006-8118-7736 https://researchmap.jp/tomohiro-seto
Fumito Koike Graduate School of Environment and Information Sciences, Yokohama National University https://orcid.org/0000-0002-6588-6485 https://researchmap.jp/0000-0002-6588-6485

DOI:

https://doi.org/10.51094/jxiv.2057

キーワード:

bare rock and grassland landscape、 ecosystem constellation、 forest landscape、 oceanic islands、 restore forest ecosystems、 reference ecosystem

抄録

Evaluation is essential in alien plant control projects aimed at restoring native vegetation. However, restoration targets often encompass a constellation of diverse ecosystems due to environmental variability, and identifying the most appropriate reference ecosystem for each site remains a challenge. Comprehensive evaluations that address this complexity are rare. In this study, we developed a novel analytical approach to assess vegetation recovery in detail and applied globally recognized restoration attributes to evaluate a long-term control project in Anijima Island in the subtropical oceanic Ogasawara Islands. The project aimed to restore primary dry scrub forests, grasslands, and bare lands, by removing alien plants. We used original vegetation survey data and time-series data collected throughout the project. Two reference ecosystem settings were applied: one assessed native cover recovery and alien cover reduction, without considering canopy structure or species composition, suitable for early-stage evaluation; the other assessed the complete recovery of primary vegetation, based on species abundance and vertical stratification, suitable for later-stage evaluation. Although the project significantly reduced total alien plant cover, a notable re-increase of alien plant species was also observed. Some native species showed recovery in herb and shrub layers. However, full ecosystem recovery was not detected within the 15-year monitoring period, suggesting that longer-term project may be required to capture the full trajectory of restoration.

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The authors have no competing interests to declare that are relevant to the content of this article.

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引用文献

Anderson MJ and Walsh DCI (2013) PERMANOVA, ANOSIM, and the Mantel test in the face of heterogeneous dispersions: What null hypothesis are you testing?. Ecological Monographs 83: 557-574. https://doi.org/10.1890/12-2010.1

Aung, T. and Koike, F. (2015) Identification of invasion status using a habitat invasibility assessment model: The case of Prosopis species in the dry zone of Myanmar. Journal of Arid Environments 120: 87-94. https://doi.org/10.1016/j.jaridenv.2015.04.016

Bonthoux S, Baselga A, Balent G (2013) Assessing community-level and single-species models predictions of species distributions and assemblage composition after 25 years of land cover change. PLOS One 8: e54179. https://doi.org/10.1371/journal.pone.0054179

Braun-Blanquet J (1964) Pflanzensoziologie. Grundzüge der Vegetationskunde. Springer-Verlag Wien and New York

Brudvig LA, Barak RS, Bauer JT, Caughlin TT, Laughlin DC, Larios L, Matthews JW, Stuble KL, Turley NE, Zirbel CR (2017) Interpreting variation to advance predictive restoration science. Journal of Applied Ecology 54:1018–1027. https://doi.org/10.1111/1365-2664.12938

Caujapé-Castells J, Tye A, Crawford DJ, Santos-Guerra A, Lobin W, Vincent Florens FB, Jardim R, Gómes I, Kueffer C (2010) Conservation of oceanic island floras: Present and future global challenges. Perspectives in Plant Ecology, Evolution and Systematics 12:107–129. https://doi.org/10.1016/j.ppees.2009.10.001

Cuevas YA, Zalba SM (2010) Recovery of Native Grasslands after Removing Invasive Pines. Restoration Ecology 18:711–719. https://doi.org/10.1111/j.1526-100X.2008.00506.x

Dann LE, Guja L, Kark S, Dwyer J (2024) Comparative study reveals management of a dominant invasive plant facilitates subtropical forest regeneration. Biological Invasions 26:299–313. https://doi.org/10.1007/s10530-023-03174-5

Emerson BC (2002) Evolution on oceanic islands: molecular phylogenetic approaches to understanding pattern and process. Molecular Ecology 11:951–966. https://doi.org/10.1046/j.1365-294X.2002.01507.x

Gardener MR, Atkinson R, Rentería JL (2010) Eradications and People: Lessons from the Plant Eradication Program in Galapagos. Restoration Ecology 18:20–29. https://doi.org/10.1111/j.1526-100X.2009.00614.x

Geerts S, Mangachena JR, Nsikani MM (2022) Secondary invaders in riparian habitats can remain up to 10 years after invasive alien Eucalyptus tree clearing. South African Journal of Botany 146:491–496. https://doi.org/10.1016/j.sajb.2021.11.040

Harada H, Yagasaki T (2019). Evaluation of the maturity of environmental conservation forests based on a hypothetical saturated conservation forest as the target condition (in Japanese). JISE REPORT 2:14–17.

Hata K, Suzuki JI, Kachi N (2007) Effects of an alien shrub species, Leucaena leucocephala, on establishment of native mid-successional tree species after disturbance in the national park in the Chichijima island, a subtropical oceanic island. Tropics 16:283–290. https://doi.org/10.3759/tropics.16.283

Hata K, Kato ,Hidetoshi, Kachi N (2010) Litter of an alien tree, Casuarina equisetifolia, inhibits seed germination and initial growth of a native tree on the Ogasawara Islands (subtropical oceanic islands). Journal of Forest Research 15:384–390. https://doi.org/10.1007/s10310-010-0199-4

Hata K, Kawakami K, Kachi N (2016) Increases in soil water content after the mortality of non-native trees in oceanic island forest ecosystems are due to reduced water loss during dry periods. Science of The Total Environment 545–546:372–380. https://doi.org/10.1016/j.scitotenv.2015.12.007

Holl KD, Aide TM (2011) When and where to actively restore ecosystems?. Forest Ecology and Management 261:1558–1563. https://doi.org/10.1016/j.foreco.2010.07.004

Jäger H, Kowarik I (2010) Resilience of Native Plant Community Following Manual Control of Invasive Cinchona pubescens in Galápagos. Restoration Ecology 18:103–112. https://doi.org/10.1111/j.1526-100X.2010.00657.x

Japan Forest Technology Association (2022) World Natural Heritage forest ecosystem conservation measures project Technical development and collection of scientific knowledge for forest ecosystem conservation Development of forest restoration methods using native trees in the Ogasawara Islands Research report for the 3rd year of Reiwa Era (in Japanese). Japan Forest Technology Association, Tokyo

Japan Forest Technology Association (2023) World Natural Heritage forest ecosystem conservation measures project Technical development and collection of scientific knowledge for forest ecosystem conservation Development of forest restoration methods using native trees in the Ogasawara Islands Research report for the 4th year of Reiwa Era (in Japanese). Japan Forest Technology Association, Tokyo

Japan Forest Technology Association (2024）Technical development for forest ecosystem conservation in the 'Ogasawara Islands' among the World Natural Heritage forest ecosystem conservation measures projects Research report for the 5th year of Reiwa Era (in Japanese). Japan Forest Technology Association, Tokyo

Japanese government (2010) Nomination of the OGASAWARA ISLANDS or Inscription on the World Heritage List. Ogasawara World Heritage Centre Home page. http://ogasawara-info.jp/pdf/isan/recommendation_en.pdf. Accessed 29 January 2024

Jírová A, Klaudisová A, Prach K (2012) Spontaneous restoration of target vegetation in old-fields in a central European landscape: a repeated analysis after three decades. Applied Vegetation Science 15:245–252. https://doi.org/10.1111/j.1654-109X.2011.01165.x

Kanto Regional Forest Office (2021a) Ogasawara Islands endemic forest ecosystem conservation and restoration work endemic forest ecosystem restoration research report for the 2nd year of Reiwa Era (in Japanese). Kanto Regional Forest Office, Maebashi

Kanto Regional Forest Office (2021b) Ogasawara Islands Endemic Forest Ecosystem Conservation and Restoration Project: work to prepare an implementation plan for control of alien plants research report for the 3rd year of Reiwa Era (in Japanese). Kanto Regional Forest Office, Maebashi

Kanto Regional Forest Office (2022) Ogasawara Islands endemic forest ecosystem conservation and restoration work endemic forest ecosystem restoration research report for the 3rd year of Reiwa Era (in Japanese). Kanto Regional Forest Office, Maebashi

Kanto Regional Forest Office (2023) Ogasawara Islands endemic forest ecosystem conservation and restoration work endemic forest ecosystem restoration research report for the 4th year of Reiwa Era (in Japanese). Kanto Regional Forest Office, Maebashi

Kanto Regional Forest Office (2024) Ogasawara Islands endemic forest ecosystem conservation and restoration work endemic forest ecosystem restoration research report for the 5th year of Reiwa Era (in Japanese). Kanto Regional Forest Office, Maebashi

Lazzaro L, Tondini E, Lombardi L, Giunti M (2020) The eradication of Carpobrotus spp. in the sand-dune ecosystem at Sterpaia (Italy, Tuscany): indications from a successful experience. Biologia 75:199–208. https://doi.org/10.2478/s11756-019-00391-z

Loh RK, Daehler CC (2008) Influence of woody invader control methods and seed availability on native and invasive species establishment in a Hawaiian forest. Biological Invasions 10:805–819. https://doi.org/10.1007/s10530-008-9237-y

Meyer JY, Laitame T, Gaertner JC (2019) Short-term recovery of native vegetation and threatened species after restoration of a remnant forest in a small oceanic island of the South Pacific. Plant Ecology & Diversity 12:75–85. https://doi.org/10.1080/17550874.2019.1584651

Miyawaki A (1989) VEGETATION OF JAPAN OKINAWA & OGASAWARA (in Japanese). Shibundo, Tokyo

Nobushima F (2010) Current status of alien plants invading the Ogasawara Islands (in Japanese), Shokucho 44-1:5–1.

Ogasawara Islands Branch Office (2013) Tokyo Metropolitan Government (Ogasawara Islands) extant vegetation research commission report for the 24th year of Heisei Era (in Japanese). Ogasawara Islands Branch Office, Ogasawara

Ogasawara Islands Branch Office (2014) Chichijima Islands alien plant control research commission research report for the 25th year of Heisei Era (in Japanese). Ogasawara Islands Branch Office, Ogasawara

Ogasawara Islands Branch Office (2015) Chichijima Islands alien plant control research commission research report for the 26th year of Heisei Era (in Japanese). Ogasawara Islands Branch Office, Ogasawara

Ogasawara Islands Branch Office (2016) Chichijima Islands alien plant control research commission research report for the 27th year of Heisei Era (in Japanese). Ogasawara Islands Branch Office, Ogasawara

Paulay G (1994) Biodiversity on Oceanic Islands: Its Origin and Extinction. American Zoologist 34-1:134–144.

Prach K, Durigan G, Fennessy S, et al (2019) A primer on choosing goals and indicators to evaluate ecological restoration success. Restoration Ecology 27:917–923. https://doi.org/10.1111/rec.13011

QGIS Development Team (2023) QGIS Geographic Information System. Open Source Geospatial Foundation Project. Available at: http://qgis.osgeo.org. Accessed 29 December 2023

R Core Team (2024) R: A language and environment for statistical computing. R Foundation for Statistical Computing, Vienna, Austria.

Ruiz-Jaen MC, Aide TM (2005) Restoration Success: How Is It Being Measured?. Restoration Ecology13: 569 – 577. https://doi.org/10.1111/j.1526-100X.2005.00072.x

Seto T, Koike F (2025) Rare and alien plant floras on cliffs and collapsed areas in the Ogasawara Islands surveyed with UAVs (in Japanese). Landscape Ecology and Management 30:1–12. https://doi.org/10.5738/jale.30.1

Seto T, Kimura J, Koike F (2025) Status of invasive plant invasions and their habitats on Anijima, Ogasawara Islands, Japan. Jxiv preprint. https://doi.org/10.51094/jxiv.1310.

Shimizu Y, Tomiyama K, Yasui T, Funakoshi M, Ito M, Kawakubo N Honma S (1991) Evaluation of human impact on the nature of Chichijima Retto in the Ogasawara (Bonin) Islands (in Japanese). Regional views 4:69–86.

Shimizu Y (2008) What is “the dry forest” in Ogasawara? (in Japanese). Annual Report of Ogasawara Research 31:1–17.

Shimizu Y (2023) Estimation of Tree Age in a Dry Scrub in the Ogasawara Islands (in Japanese). Regional views 36:1–8.

Shinozawa K, Saito K, Takeuchi K, Ikeguchi H (1993) Landscape Evaluation Based on Ecological and Visual Characteristics on Chichi-jima and Ani-jima, Ogasawara Islands (in Japanese). Journal of the Japanese Institute of Landscape Architects 56-5:199–204.

Sugai K, Setsuko S, Nagamitsu T, Murakami N, Kato H, Yoshimaru H (2013) Genetic differentiation in Elaeocarpus photiniifolia (Elaeocarpaceae) associated with geographic distribution and habitat variation in the Bonin (Ogasawara) Islands. Journal of Plant Research 126: 763–774. https://doi.org/10.1007/s10265-013-0571-5

Tokyo Regional Forestry Bureau (1939) Ogasawara Islands research area forest vegetation survey report (in Japanese)

Tanaka N, Fukasawa K, Otsu K, Noguchi E, Koike F, Kawakami K, Okochi I (2010) Eradication of the Invasive Tree Species Bischofia javanica and Restoration of Native Forests on the Ogasawara Islands. In: Kawakami K, Okochi I (eds) Restoring the Oceanic Island Ecosystem: Impact and Management of Invasive Alien Species in the Bonin Islands. Springer Japan, Tokyo, pp 161–171

Tanimoto T, Toyoda T, Watanabe T, Iida S, Karizumi N, Chiba H (1995) Vegetation selection and floras in the Ogasawara study site. Forest Research and Management Organization research report (in Japanese) 369:1–61.

Tomiyama K (1998) Disturbance of island ecosystem by introduced species in Ogasawara lslands (in Japanese). Japanese Journal of Ecology 48-1:63–72.

Torres A, Alarcón PAE, Rodríguez-Cabal MA, Nuñez MA (2018) Secondary Invasions Hinder the Recovery of Native Communities after the Removal of Nonnative Pines Along a Precipitation Gradient in Patagonia. Forests 9:394. https://doi.org/10.3390/f9070394

Toyoda T (2003) FLORA OF BONIN ISLANDS enlarged and revised edition (in Japanese). Aboc, Kamakura

Toyoda T (2014) The Endemic Plants of the Bonin Islands (in Japanese). Woodspress, Minamiashigara

Whittaker RJ and Fernández-Palacios JM (2007) Island Biogeography: Ecology, evolution, and conservation. 2nd ed. Oxford University Press