Impact of road construction on tree diversity and forest structure in an intact Bornean mixed dipterocarp forest
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IDERIS, N. K. H, JAAFAR, S. MD. & SUKRI, R. S. 2025. Impact of road construction on tree diversity and forest structure in an intact Bornean mixed dipterocarp forest. Reinwardtia 24(1): 1–15. — Road construction has previously been shown to negatively impact biodiversity and is an urgent threat to Bornean tropical forests. We investigated changes in tree species diversity and forest structure of the Andulau Forest Reserve in Brunei Darussalam, following the construction of the Telisai-Lumut Highway. Within nine 20 × 20 m plots set up at varying distances from the forest edge where the road was located, we measured all trees ≥ 1 cm in diameter at breast height for their stem diameter, height and crown characteristics, and identified all trees ≥ 5 cm dbh. Although mean tree abundance and diversity between plots were similar, we detected significant differences in forest structure, particularly stem diameter, basal area, and crown characteristics. Plots closest to the road recorded the highest total tree species richness, although not significant, and contained a mixture of pioneer tree species and remnant interior forest species, while no pioneers were recorded in the interior forest plots. We documented the presence of high conservation value species, including three critically endangered species (Gonystylus bancanus, Hopea micrantha, and Vatica venulosa). Our work illustrates the potential impacts on forest structure from road construction and highlights the need for further studies to assess the long-term impacts on tree diversity and forest dynamics.
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References
ALAMGIR, M., CAMPBELL, M. J., SLOAN, S., GOOSEM, M., CLEMENTS, G. R., MAHMOUD, M. I. & LAURANCE, W. F. 2017. Economic, socio-political and environmental risks of road development in the tropics. Current Biology 27(20): 1130–1140. DOI: 10.1016/j.cub.2017.08.067.
ALAMGIR, M., CAMPBELL, M. J., SLOAN, S., SUHARDIMAN, A., SUPRIATNA, J. & LAURANCE, W. F. 2019. High-risk infrastructure projects pose imminent threats to forests in Indonesian Borneo. Scientific Reports 9(1):140. DOI: 10.1038/s41598-018-36594-8.
ALAMGIR, M., CAMPBELL, M. J., SLOAN, S., ENGERT, J., WORD, J. & LAURANCE, W. F. 2020. Emerging challenges for sustainable development and forest conservation in Sarawak, Borneo. PLoS ONE 15(3): Art. e0229614. DOI: 10.1371/journal.pone.0229 614.
ANDERSON, J. A. R. & MARSDEN, D. 1984. Brunei Forest Resources and Strategic Planning Study: The Forest Resources of Negara Brunei Darussalam. Bandar Seri Begawan, Brunei Darussalam.
ASHTON, P. S. 2010. Conservation of Borneo biodiversity: do small lowland parks have a role, or are big inland sanctuaries sufficient? Brunei as an example. Biodiversity and Conservation 19(2): 343–356. DOI: 10.1007/s10531-009-9717-0.
AVON, C., BERGES, B., DUMAS, Y. & DUPOUEY, J. L. 2010. Does the effect of forest roads extend a few meters or more into the adjacent forest? A study on understory plant diversity in managed oak stands. Forest Ecolo-gy and Management 259(8): 1546–1555. DOI: 10.1016/j.foreco.2010.01.031.
AVON, C., DUMAS, Y. & BERGES, L. 2013. Management practices increase the impact of roads on plant communities in forests. Biological Conservation 159: 24–31. DOI: 10.1016/j.biocon.2012.10.008.
BENITEZ-LOPEZ, A., ALKEMADE, R. & VER-WEIJ, P. A. 2010. The impacts of roads and other infrastructure on mammal and bird populations: A meta-analysis. Biological Conservation 143(6): 1307–1316. DOI: 10.1016/j.biocon.2010.02.009.
BRUIJNZEEL, L. A. 2004. Hydrological functions of tropical forests: not seeing the soil for the trees. Agriculture, Ecosystems and Environment 104(1): 185–228. DOI: 10.1016/j.agee.2004.01.015.
BRYAN, J. E., SHEARMAN, P. L., ASNER, G. P., KNAPP, D. E., AORO, G. & LOKES, B. 2013. Extreme differences in forest degradation in Borneo: comparing practices in Sarawak, Sabah, and Brunei. PLoS ONE 8(7): Art. e69679. DOI: 10.1371/journal.pone.0069679.
CAMERON, E. K. & BAYNE, E. M. 2009. Road age and its importance in earthworm invasion of northern boreal forests. Journal of Applied Ecology 46(1): 28–36. DOI: 10.1111/j.1365-2664.2008.01535.x.
CLEMENTS, G. R., LYNAM A. J., GAVEAU, D., YAP, W. L., LHOTA, S., GOOSEM, M., LAURANCE, S. & LAURANCE W. F. 2014. Where and how are roads endangering mammals in Southeast Asia's forests? PLoS ONE 9 (12): Art. e115376. DOI: 10.1371/journal.pone.0115376.
COFFIN, A. W. 2007. From roadkill to road ecology: A review of the ecological effects of roads. Journal of Transport Geography 15(5): 396–406. DOI: 10.1016/j.jtrangeo.2006.11.006.
CONDIT, R. 1998. Tropical forest census plots: Methods and Results from Barro Colorado Island, Panama and a Comparison With Other Plots. Springer, Berlin.
DAVIES, S. J. & BECKER, P. 1996. Floristic composition and stand structure of mixed dipterocarp and heath forests in Brunei Darussalam. Journal of Tropical Forest Science 8(4): 542–569.
DIN, H., METALI, F. & SUKRI, R. S. 2015. Tree diversity and community composition of the Tutong White Sands, Brunei Darussalam: A rare tropical heath forest ecosystem. Interna-tional Journal of Ecology. Art ID807876. DOI: 10.1155/2015/807876.
DOBERT, T. F., WEBBER, B. L., SUGAU, J. B., DICKINSON, K. J. M. & DIDHAM, R. K. 2017. Logging, exotic plant invasions, and native plant reassembly in a lowland tropical rain forest. Biotropica 50(2): 254–265. DOI: 10.1111/btp.12521.
FORMAN, R. T. T. & ALEXANDER, L. E. 1998. Roads and their major ecological effects. Annual Review of Ecology and Systematics 29: 207–231. DOI:10.1146annurev.ecolsys.29.1. 207.
FREITAS, S. R., HAWBAKER, T. J. & METZ-GER, J. P. 2010. Effects of roads, topography, and land use in forest cover dynamics in the Brazilian Atlantic Forest. Forest Ecology and Management 259: 410–417. DOI: 10.1016/j.foreco.2009.10.036.
GAVEAU, D. L. A., LOCATELLI, B., SALIM, M. A., YAEN, H., PACHECO, P. & SHEIL, D. 2019. Rise and fall of forest loss and industrial plantations in Borneo (2000–2017). Con-servation Letters 12: Art. e12622. DOI: 10.1111/conl.12622.
GAVEAU, D. L. A., SHEIL, D., HUSNAYAEN, SALIM, M. A., ARJASAKUSUMA, S., AN-CRENAZ, M., PACHECO, P. & MEIJAARD, E. 2016. Rapid conversions and avoided deforestation: examining four decades of industrial plantation expansion in Borneo. Scientific Reports 6: 32017. DOI: 10.1038/srep32017.
GHAZOUL, J. & SHEIL, D. 2010. Tropical Rain Forest Ecology, Diversity, and Conservation. University Press, Oxford.
GOODALE, U. M., ASHTON, M., BERLYN, G. P., GREGOIRE, T. G., SINGHAKUMARA, B. M. & TENNAKOON, K. U. 2012. Disturbance and tropical pioneer species: Patterns of association across life history stages. Forest Ecology and Management 277: 54–66. DOI: 10.1016/j.foreco.2012.04.020.
HAMAD-SHEIP, Y., ABDUL-HAMID, H., ABI-RI, R., SALEH, M. N., MOHAMED, J., JALIL A. M. & NAJI H. R. 2021. Effect of Acacia mangium canopy on physicochemical characteristics and nutrient concentrations of the soil at Ayer Hitam Forest Reserve, Malaysia. Forests 12(9): Art. 1259. DOI: 10.3390/f12091259.
HANSEN, M. J. & CLEVENGER, A. P. 2005. The influence of disturbance and habitat on the presence of non-native plant species along transport corridors. Biological Conservation 125: 249–259. DOI: 10.1016/j.biocon.200 5.03.024.
JAAFAR, S. M., METALI, F., NAFIAH, S. N. S., SUPRI, N. E., AHMAD, N. BURSLEM, D. F. R. P. & SUKRI, R. S. 2022a. Differential impacts of Acacia invasion on nutrient fluxes in two distinct Bornean lowland tropical rainforests. Forests 13(12): Art. 2101. DOI: 10.3390/f13122101.
JAAFAR, S. M., METALI, F. & SUKRI, R. S. 2022b. Acacia invasion differentially impacts soil properties of two contrasting tropical lowland forests in Brunei Darussalam. Journal of Tropical Ecology 38(5): 259–266. DOI: 10.1017/S0266467422000141.
JAMBUL, R., LIMIN, A., ALI, A. N. & SLIK, F. 2020. Invasive Acacia mangium dominance as an indicator for heath forest disturbance. Environmental and Sustainability Indicators 8: Art. 100059. DOI: 10.1016/j.indic.2020.100059.
LACERDA, A. E. B., KANASHIRO, M. & SEB-BENN, A. M. 2008. Effects of reduced impact logging on genetic diversity and spatial genetic structure of a Hymenaea courbaril population in the Brazilian Amazon Forest. Forest Ecology and Management 255: 1034–1043. DOI: 10.1016/j.foreco.2007.10.009.
LAURANCE, W. F., CLEMENTS, G. R., SLOAN, S., O'CONNELL, C. S., MUELLER, N. D., GOOSEM, M., VENTER, O., EDWARDS, D. P., PHALAN, B., BALMFORD, A., VAN DER REE, R. & ARREA, I. B. 2014. A global strategy for road building. Nature 513: 229–232. DOI: 10.1038/nature13717.
LAURANCE, W. E., CROES, B. M., TCHI-GNOUMBA, L., LAHM, S. A., ALONSO, A., LEE, M. E., CAMPBELL, P. & ONDZEANO, C. 2006. Impacts of roads and hunting on central-African rainforest mammals. Conservation Biology 20(4): 1251–1261. DOI: 10.1111/j.1523-1739.2006.00420.x.
LAURANCE, W. F., GOOSEM, M. & LAU-RANCE, S. G. W. 2009. Impacts of roads and linear clearings on tropical forests. Trends in Ecology and Evolution 24: 659–669. DOI: 10.1016/j.tree.2009.06.009.
LAURANCE, W. F., NASCIMENTO, H. E. M., LAURANCE, S. G., ANDRADE, A., EWERS, R. M., HARMS, K. E., LUIZAO, R. C. C. & RIBEIRO, J. E. 2007. Habitat fragmentation, variable edge effects, and the landscape-divergence hypothesis. PLoS ONE 2(10): Art. e1017. DOI: 10.1371/journal.pone.0001017
LAURANCE, W. F. & YENSEN, E. 1991. Predicting the impacts of edge effects in fragmented habitats. Biological Conservation 55(1): 77–92. DOI: 10.1016/0006-3207(91)90006-U.
LEE, H. S. 2004. Introducing the cultivation of medicinal plants and wild fruits in forest rehabilitation operations on former shifting cultivation sites in Sarawak, Malaysia: Issues and challenges. Southeast Asia Studies 42(1): 60–72.
MAGURRAN, A. E. 2004. Measuring Biological Diversity. Blackwell Publication, Oxford.
MUNGI, N. A., QURESHI, Q. & JHALA, Y. V. 2021. Role of species richness and human-impacts in resisting invasive species in tropical forests. Journal of Ecology 109(9): 3308–3321. DOI: doi.org/10.1111/1365-2745.13751.
MURCIA, C. 1995. Edge effect on fragmented forests: implications for conservation. Trends in Ecology and Evolution 10(2): 58–62. DOI: 10.1016/S0169-5347(00)88977-6.
NAJAFI, A., TORABI, M., NOWBAKHT, A. A., MOAFI, M., ESLAMI, A. & FOUMANI, B. S. 2012. Effect of forest roads on adjacent tree regeneration in a mountainous forest. Annals of Biological Research 3(4): 1700–1703.
OKSANEN, J., BLANCHET, F. G., KINDT, R., LEGENDRE, P., MINCHIN, P. R., O’HARA, R. B., SIMPSON, G. L., SOLYMOS, P., STE-VENS, M. H. H. & WAGNER, H. 2013. Ve-gan: Community Ecology Package. R Package Version 2.0-10. http://CRAN.R-project.org/package=vegan.
OLIVEIRA-FILHO, A. T., DE MELLO, J. M. & SCOLFORO, J. R. S. 1997. Effects of past disturbance and edges on tree community structure and dynamics within a fragment of tropical semideciduous forest in South-Eastern Brazil over a five-year period (1987-1992). Plant Ecology 131: 45–66. DOI: doi.org/10.1023/A:1009744207641.
OLUPOT, W. 2009. A variable edge effect on trees of Bwindi Impenetrable National Park, Uganda, and its bearing on measurement parameters. Biological Conservation 142(4): 789–797.
DOI: doi.org/10.1016/j.biocon.2008.12.015.
OSUNKOYA, O. O., OTHMAN, F. E. & KAHAR, R. S. 2005. Growth and competition between seedlings of an invasive plantation tree, Acacia mangium, and those of a native Borneo heath-forest species, Melastoma beccarianum. Ecological Research 20(2): 205–214. DOI: doi.org/10.1007/s11284-004-0027-4.
PRETZSCH, H., BIBER, P., UHL E., DAHL-HAUSEN, J., ROTZER, T., CALDENTEY, J., KOIKE, T., VAN CON, T., CHAVANNE, A., SEIFERT, T., DU TOIT, B., FARNDEN, C. & PAULEIT, S. 2015. Crown size and growing space requirement of common tree species in urban centres, parks, and forests. Urban Forestry and Urban Greening 14(3): 466–479. DOI: doi.org/10.1016/j.ufug.2015.04.006.
PRIMACK, R. B. & CORLETT, R. T. 2002. Tropical Rain Forests. Blackwell Publications, Malden.
R DEVELOPMENT CORE TEAM. 2013. http://www.R-project.org.
RICHARDS, P. W. 1996. The Tropical Rain Forest: An Ecological Study. Cambridge University Press, Cambridge.
RIES, L., FLETCHER, R. J., BATTIN, J. & SISK, T. D. 2004. Ecological responses to habitat edges: mechanisms, models, and variability explained. Annual Review of Ecology and Systematics 35: 491–522. DOI: 10.1146/annurev.ecolsys.35.112202.130148.
SEILER, A. 2001. Ecological Effects of Roads: A Review. Swedish University of Agricultural Sciences, Uppsala.
SENIOR, R. A., HILL, J. K., BENEDICK, S. & EDWARDS, D. P. 2018. Tropical forests are thermally buffered despite intensive selective logging. Global Change Biology 24(3): 1267–1278. DOI: doi.org/10.1111/gcb.13914.
SLIK, J. W. F., KESSLER, P. J. A. & VAN WELZEN, P. C. 2003. Macaranga and Mallo-tus species (Euphorbiaceae) as indicators for disturbance in the mixed lowland dipterocarp forest of East Kalimantan (Indonesia). Ecological Indicators 2: 311–324. DOI: doi.org/10.1016/S1470-160X(02)00057-2.
SODHI, N. S., KOH, L. P., CLEMENTS, R., WANGER, T. C., HILL, J. K., HAMER, K. C., CLOUGH, Y., TSCHARNTKE, T., POSA, M. R. & LEE, T. M. 2010. Conserving South-east Asian forest biodiversity in human-modified landscapes. Biological Conservation 143: 2375–2384. DOI: 10.1016/j.biocon. 2009.12.029.
SUHAILI, A. L. R., TENNAKOON, K. U. & SUKRI, R. S. 2015. Soil seed bank of an exo-tic Acacia sp. plantation and an adjacent tropical heath forest in Brunei Darussalam. BIO-TROPIA - The Southeast Asian Journal of Tropical Biology 22(2): 140–150. DOI: 10.11598/btb.2015.22.2.487.
SUKRI, R. S., WAHAB, R. A., SALIM, K. A. & BURSLEM, D. F. R. P. 2011. Habitat associations and community structure of dipterocarps in response to environment and soil conditions in Brunei Darussalam, Northwest Borneo. Bio-tropica 44(5): 595–605. DOI: 10.1111/j.1744-7429.2011.00837.x.
THE IUCN RED LIST OF THREATENED SPECIES. 2021. www.iucnredlist.org. (Accessed 8 December 2021).
TUAH, W. H., TENNAKOON, K. U., JAAFAR, S. M. & SUKRI, R. S. 2020. Post-fire impacts on tree diversity in coastal heath forests of Brunei Darussalam. Scientia Bruneiana 19(1): 19–32. DOI: doi.org/10.46537/scibru.v19i1.109.
TURNER, I. M. 2001. The Ecology of Trees in The Tropical Rain Forest. University Press, Cambridge.
WADDELL, E. H., BANIN, L. F., FLEISS, S., HILL, J. K., HUGHES, M., JELLING, A., YEONG, K. L., OLA, B. B., BIN
SAILIM, A., TANGAH, J. & CHAPMAN, D. S. 2020a. Land-use and propagule pressure promote invasions in tropical rainforest remnants. Landscape Ecology 35: 1891–1906. DOI: 10.1007/s10980-020-01067-9.
WADDELL, E. H., CHAPMAN, D. S., HILL, J. K., HUGHES, M., BIN SAILIM, A., TAN-GAH, J. & BANIN, L. F. 2020b. Trait filtering during exotic plant invasion of tropical rain-forest remnants along a disturbance gradient. Functional Ecology 34(12): 2584–2597. DOI: 10.1111/1365-2435.13679.
YANO, S., AOYAGI, R., SHOGORO, F., SUGAU, J. B., PEREIRA, J. T. & KITAYA-MA, K. 2021. Effects of logging on landscape-level tree diversity across an elevational gradient in Bornean tropical forests. Global Ecology and Conservation 29: Art. e01739. DOI: 10.1016/j.gecco.2021.e01739.
YUSOFF, A., TENNAKOON, K. U., JAAFAR, S. M., ZAMAN, D. N. & SUKRI, R. S. 2019. Effects of Acacia invasion on leaf litter nutrient and soil properties of coastal Kerangas forests in Brunei Darussalam. Scientia Bruneiana 18: 1–10. DOI: 10.46537/scibru.v18i1.87.
ZENG, S., ZHANG, T., GAO, Y., OUYANG, Z., CHEN, J., LI, B. & ZHAO, B. 2011. Effects of road age and distance on plant biodiversity: a case study in the Yellow River Delta of China. Plant Ecology 212: 1213–1229. DOI: 10.1007/s11258-011-9899-x.