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Remnant microhabitats are important for bird habitat selection and plant regeneration in the fragmented habitat. However, empirical information on the consequences of how microhabitat use by birds affects the early recruitment of plants is lacking.
In this study, we evaluated whether microhabitat selection by the Black Bulbul (Hypsipetes leucocephalus) (J. F. Gmelin, 1789) impacts the early recruitment of the endangered tree species, the Chinese Yew (Taxus chinensis (Pilger) Rehd), in a fragmented forest over a 4-year period (2011–2012, 2018–2019).
Our results showed the main factors affecting H. leucocephalus microhabitat selection were distance to the nearest T. chinensis mature tree, herb cover and density, leaf litter cover, and vegetation type. Moreover, the results of logistic regression also highlighted the importance of elevation, distance to light gap and roads, tree cover in bird microhabitat selection. Furthermore, the seed emergence rate in microhabitats used by birds did not differ from the natural forest, which was related to five factors of bird microhabitat. The Random Forest model showed that seedling emergence rate was increased with leaf litter cover and distance to fallen dead trees, but decreased in relation to herb cover, slope, and elevation.
Our results highlight the importance of remnant microhabitats in fragmented forests for sustaining forest ecology and optimal management. The contribution of microhabitats used by birds to plant recruitment provides insights into how frugivore species contribute to plant regeneration, which should be incorporated in future conservation and management practices of fragmented forests.
Remnant microhabitats are important for bird habitat selection and plant regeneration in the fragmented habitat. However, empirical information on the consequences of how microhabitat use by birds affects the early recruitment of plants is lacking.
In this study, we evaluated whether microhabitat selection by the Black Bulbul (Hypsipetes leucocephalus) (J. F. Gmelin, 1789) impacts the early recruitment of the endangered tree species, the Chinese Yew (Taxus chinensis (Pilger) Rehd), in a fragmented forest over a 4-year period (2011–2012, 2018–2019).
Our results showed the main factors affecting H. leucocephalus microhabitat selection were distance to the nearest T. chinensis mature tree, herb cover and density, leaf litter cover, and vegetation type. Moreover, the results of logistic regression also highlighted the importance of elevation, distance to light gap and roads, tree cover in bird microhabitat selection. Furthermore, the seed emergence rate in microhabitats used by birds did not differ from the natural forest, which was related to five factors of bird microhabitat. The Random Forest model showed that seedling emergence rate was increased with leaf litter cover and distance to fallen dead trees, but decreased in relation to herb cover, slope, and elevation.
Our results highlight the importance of remnant microhabitats in fragmented forests for sustaining forest ecology and optimal management. The contribution of microhabitats used by birds to plant recruitment provides insights into how frugivore species contribute to plant regeneration, which should be incorporated in future conservation and management practices of fragmented forests.
Bomfim JA, Guimarães PR, Peres CA, Carvalho G, Cazetta E. Local extinctions of obligate frugivores and patch size reduction disrupt the structure of seed dispersal networks. Ecography. 2018; 41: 1899–909.
Bregman TP, Lees AC, MacGregor HEA, Darski B, de Moura NG, Aleixo A, et al. Using avian functional traits to assess the impact of land-cover change on ecosystem processes linked to resilience in tropical forests. Proc R Soc B-Biol Sci. 2016; 283: 20161289.
Carlo TA, García D, Martínez D, Gleditsch JM, Morales JM. Where do seeds go when they go far? Distance and directionality of avian seed dispersal in heterogeneous landscapes. Ecology. 2013; 94: 301–7.
Cordeiro NJ, Howe HF. Forest fragmentation severs mutualism between seed dispersers and an endemic African tree. Proc Natl Acad Sci USA. 2003; 100: 14052–6.
Côrtes M, Uriarte M. Integrating frugivory behavior and animal movement: a review of the evidence and implication for scaling seed dispersal. Biol Rev. 2013; 88: 255–72.
Cousens RD, Hill J, French K, Bishop ID. Towards better prediction of seed dispersal by animals. Funct Ecol. 2010; 24: 1163–70.
Donoso I, García D, Rodríguez-Pérez J, Martínez D. Incorporating seed fate into plant–frugivore networks increases interaction diversity across plant regeneration stages. Oikos. 2016; 125: 1762–71.
Emer C, Galetti M, Pizo MA, Guimarães PR, Moraes S, Piratelli A, et al. Seed-dispersal in a fragmented hotspot of biodiversity— a metanetwork approach. Ecol Lett. 2018; 21: 484–93.
Farwig N, Schabo DG, Albrecht J. Trait-associated loss of frugivores in fragmented forest does not affect seed removal rates. J Ecol. 2017; 105: 20–8.
García-Cervigón AI, Żywiec M, Delibes M, Suárez-Esteban A, Perea R, Fedriani JM. Microhabitats of seed arrival: spatio-temporal variations in complex seed-disperser networks. Oikos. 2018; 127: 1001–13.
Jordano P, Schupp EW. Determinants of seed disperser effectiveness: the quantity component and patterns of seed rain for Prunus mahaleb. Ecol Monogr. 2000; 70: 591–615.
Kelty MP, Lustick SI. Energetics of the starling (Sturnus vulgaris) in a pine woods. Ecology. 1977; 58: 1181–5.
Li N, Fang SB, Li XH, An SQ, Lu CH. Differential contribution of frugivorous birds to dispersal patterns of the endangered Chinese yew (Taxus chinensis). Sci Rep. 2015; 5: 10045.
Li N, Wang Z, Zhang S, Yan C, Li X, Lu C. Importance of bird traits for seed dispersal patterns of co-fruiting trees in a patchy forest. Integr Zool. 2019; 14: 470–8.
Li N, Zhang S, Ren YH, Wang Z. Importance of plant and bird traits on the seed removal pattern of endangered trees across different forest patches in southeast China. Ecol Process. 2020; 9: 43.
Liu J, Coomes DA, Gibson L, Hu G, Liu J, Luo Y, et al. Forest fragmentation in China and its effect on biodiversity. Biol Rev. 2019; 94: 1636–57.
Marjakangas EL, Abrego N, Grøtan V, de Lima RAF, Bello C, Bovendorp RS, et al. Fragmented tropical forests lose mutualistic plant-animal interactions. Divers Distrib. 2019; 26: 154–68.
Pérez-Méndez N, Jordano P, Valido A. Downsized mutualisms: consequences of seed dispersers' body-size reduction for early plant recruitment. Perspect Plant Ecol. 2015; 17: 151–9.
Peters MK, Hemp A, Appelhans T, Becker JN, Behler C, Classen A, et al. Climate–land-use interactions shape tropical mountain biodiversity and ecosystem functions. Nature. 2019; 568: 88–92.
Puerta-Piñero C, Pino J, Gómez JM. Direct and indirect landscape effects on Quercus ilex, regeneration in heterogeneous environments. Oecologia. 2012; 170: 1009–20.
Sasal Y, Morales JM. Linking frugivore behavior to plant population dynamics. Oikos. 2013; 122: 95–103.
Schupp EW, Jordano P, Gómez JM. A general framework for effectiveness concepts in mutualisms. Ecol Lett. 2017; 20: 577–90.
Schupp EW. Quantity, quality and the effectiveness of seed dispersal by animals. Vegetatio. 1993; 107: 15–29.
Simmons BI, Sutherland WJ, Dicks LV, Albrecht J, Farwig N, García D, et al. Moving from frugivory to seed dispersal: incorporating the functional outcomes of interactions in plant-frugivore networks. J Anim Ecol. 2018; 87: 995–1007.
Spiegel O, Nathan R. Incorporating dispersal distance into the disperser effectiveness framework: frugivorous birds provide complementary dispersal to plants in a patchy environment. Ecol Lett. 2007; 10: 718–28.
Taubert F, Fischer R, Groeneveld J, Lehmann S, Müller MS, Rödig E, et al. Global patterns of tropical forest fragmentation. Nature. 2018; 554: 519–22.
Zwolak R. How intraspecific variation in seed-dispersing animals matters for plants. Biol Rev. 2018; 93: 897–913.
We thank Shuai Zhang for providing assistance in the field. We also thank Prof. Xian-Feng Yi, Prof. Xin-Hai Li and Dr. Si-Chong Chen for constructive suggestions.
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