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  • 1
    Online Resource
    Online Resource
    Arboreal camera trapping: a reliable tool to monitor plant‐frugivore interactions in the trees on large scales
    Wiley ; 2022
    In:  Remote Sensing in Ecology and Conservation Vol. 8, No. 1 ( 2022-02), p. 92-104
    Details
    In: Remote Sensing in Ecology and Conservation, Wiley, Vol. 8, No. 1 ( 2022-02), p. 92-104
    Abstract: Although arboreal camera trapping is a growing field, it has rarely been used for monitoring plant‐frugivore interactions in the trees. Frugivore foraging behavior generally occurs in trees, hence arboreal camera trapping can be a potentially useful tool for frugivory research. We developed a camera trap sampling method to monitor plant‐frugivore interactions during mature fruiting periods. We used this method to monitor 318 individuals (camera sites) of 18 fleshy‐fruit plant species on 22 subtropical land‐bridge islands in the Thousand Island Lake, China. We recorded a total of at least 52 frugivorous animals, including a ground‐foraging bird species ( Lophura nycthemera ) and several mammals with foraging behaviors in the trees. We also recorded 4399 independent interaction events, including 275 unique plant‐bird interactions. We proposed a framework to classify interaction types and performed a sampling completeness test. We found that a sampling strategy that covered approximately a third of the fruit maturation period when most fruits were ripe was sufficient to sample plant‐frugivore interactions. Our results demonstrated that our sampling method with camera transects is reliable to monitor plant‐frugivore interactions in a fragmented landscape. This study helps to lay the methodological foundation for building networks of plant‐frugivore interactions with arboreal camera trapping on large spatial/temporal scales. As a non‐invasive, labor‐saving, and largely unbiased sampling method, the field application of arboreal camera trapping in different regions can advance the technology of biodiversity monitoring and lead to more accurate biodiversity inventories in arboreal environments.
    Type of Medium: Online Resource
    ISSN: 2056-3485 , 2056-3485
    URL: Issue
    URL: Article
    DOI: 10.1002/rse2.v8.1
    DOI: 10.1002/rse2.232
    Language: English
    Publisher: Wiley
    Publication Date: 2022
    detail.hit.zdb_id: 2825232-9
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  • 2
    Online Resource
    Online Resource
    Plant-frugivore network simplification under habitat fragmentation leaves a small core of interacting generalists
    Springer Science and Business Media LLC ; 2022
    In:  Communications Biology Vol. 5, No. 1 ( 2022-11-10)
    Details
    In: Communications Biology, Springer Science and Business Media LLC, Vol. 5, No. 1 ( 2022-11-10)
    Abstract: Habitat fragmentation impacts seed dispersal processes that are important in maintaining biodiversity and ecosystem functioning. However, it is still unclear how habitat fragmentation affects frugivorous interactions due to the lack of high-quality data on plant-frugivore networks. Here we recorded 10,117 plant-frugivore interactions from 22 reservoir islands and six nearby mainland sites using the technology of arboreal camera trapping to assess the effects of island area and isolation on the diversity, structure, and stability of plant-frugivore networks. We found that network simplification under habitat fragmentation reduces the number of interactions involving specialized species and large-bodied frugivores. Small islands had more connected, less modular, and more nested networks that consisted mainly of small-bodied birds and abundant plants, as well as showed evidence of interaction release (i.e., dietary expansion of frugivores). Our results reveal the importance of preserving large forest remnants to support plant-frugivore interaction diversity and forest functionality.
    Type of Medium: Online Resource
    ISSN: 2399-3642
    URL: Article
    DOI: 10.1038/s42003-022-04198-8
    Language: English
    Publisher: Springer Science and Business Media LLC
    Publication Date: 2022
    detail.hit.zdb_id: 2919698-X
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  • 3
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    Online Resource
    Image_1.pdf
    Frontiers Media SA ; 2022
    In:  Frontiers in Plant Science Vol. 13 ( 2022-11-29)
    Details
    In: Frontiers in Plant Science, Frontiers Media SA, Vol. 13 ( 2022-11-29)
    Abstract: Plant root and shoot growth are closely interrelated, though the connotation of root–shoot balance should not be limited to their connectivity in biomass and physiological indicators. Their directional distribution of mass in architecture and the resulting root–shoot interactions are the keys to understanding the dynamic balance of the below- and above-ground organs related to tree anchorage. This study focuses on the 4-year-old camphor tree ( Cinnamomum camphora L.) as a system to observe the biomass distribution in response to the asymmetric disturbance treatments of biased root (BRT), inclined trunk (ITT), and half-crown (HCT) in a controlled cultivation experiment using the minirhizotron technique. We found an inverse relationship of biomass distribution of crowns to roots in BRT and opposite asymmetries of roots with crowns in response to the ITT and HCT treatments. We also observed higher net photosynthesis rate ( P n ), water use efficiency, and chlorophyll content in the leaves on the side opposite the lean in ITT, and higher P n , transpiration rate, and chlorophyll content on the root-bias side in BRT, which is consistent with the nutrient allocation strategies of allocating nutrients across plant organs in an optimal way to obtain ‘functional equilibrium’ and adapt to the stressed environment. Furthermore, the asymmetrical growth transformation of first-level branch length from the root-bias side to the opposite side in BRT, and a similar transformation of root length from the crown-bias side to the opposite side in HCT, imbues further theoretical support of the nutrient allocation strategy and the biomechanical stability principle, respectively. In summary, this study is the first to identify opposite interaction between below- and above-ground biomass distributions of the camphor tree. The findings enrich the connotation of root–shoot interactions and help to realize root design for the silviculture management of urban forests.
    Type of Medium: Online Resource
    ISSN: 1664-462X
    URL: Article
    URL: Article
    DOI: 10.3389/fpls.2022.993319
    DOI: 10.3389/fpls.2022.993319.s001
    Language: Unknown
    Publisher: Frontiers Media SA
    Publication Date: 2022
    detail.hit.zdb_id: 2687947-5
    detail.hit.zdb_id: 2613694-6
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  • 4
    Online Resource
    Online Resource
    Plant–frugivore interactions revealed by arboreal camera trapping
    Wiley ; 2021
    In:  Frontiers in Ecology and the Environment Vol. 19, No. 3 ( 2021-04), p. 149-151
    Details
    In: Frontiers in Ecology and the Environment, Wiley, Vol. 19, No. 3 ( 2021-04), p. 149-151
    Type of Medium: Online Resource
    ISSN: 1540-9295 , 1540-9309
    URL: Issue
    URL: Article
    DOI: 10.1002/fee.v19.3
    DOI: 10.1002/fee.2321
    Language: English
    Publisher: Wiley
    Publication Date: 2021
    detail.hit.zdb_id: 2161292-4
    SSG: 12
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  • 5
    Online Resource
    Online Resource
    Nearby large islands diminish biodiversity of the focal island by a negative target effect
    Wiley ; 2023
    In:  Journal of Animal Ecology Vol. 92, No. 2 ( 2023-02), p. 492-502
    Details
    In: Journal of Animal Ecology, Wiley, Vol. 92, No. 2 ( 2023-02), p. 492-502
    Abstract: 岛屿生物地理学平衡理论 (Equilibrium Theory of Island Biogeography) 提出的迁入‐灭绝动态平衡 (colonization‐extinction dynamic) 认为面积更大、隔离度更低的岛屿生物多样性将会更高。大陆通常被认为是岛屿生物的主要源, 因此存在着负的物种数‐大陆距离关系。然而主岛 (focal island) 邻近的其他岛屿同样可能是潜在的物种源 (colonization source)。本研究进一步假设, 邻近岛屿既可以是源, 也可以是拓殖目标 (colonization target)。因此, 邻近岛屿可能吸引主岛的潜在拓殖种群, 降低目标岛屿的迁入率, 进而减少其生物多样性, 我们将其称之为负目标效应 (negative target effect)。 为了验证这一假设, 我们在中国最大的群岛 (浙江舟山群岛), 选取了面积和隔离度尽可能多样的42个岛屿开展鸟类物种调查, 并评估了各个岛屿地理属性 (包括岛屿面积、大陆距离和邻近岛屿相关的隔离度指标) 对鸟类的物种丰富度、功能多样性和系统发育多样性的影响。此外, 我们还比较了不同相对面积阈值下最近大岛距离和不同距离阈值下周边岛屿相对面积对物种丰富度的预测能力, 以探讨邻近岛屿作为源或目标时对岛屿物种丰富度的影响。 研究发现, 岛屿面积对物种丰富度、系统发育多样性和功能多样性有正影响, 而大陆距离只对物种丰富度有负影响。岛屿鸟类丰富度随着与最近大岛距离的增加而增加, 说明邻近岛屿表现出了负目标效应, 而非源效应。我们发现负目标效应受到邻近岛屿相对面积的影响。 负目标效应的发现表明邻近岛屿不仅仅可以作为物种源或是踏脚石 (stepping stone), 也可能是拓殖目标。这说明在岛屿生物地理学研究中考虑多重岛屿地理属性具有重要意义, 特别是那些有关源效应或目标效应的岛屿属性。
    Type of Medium: Online Resource
    ISSN: 0021-8790 , 1365-2656
    URL: Issue
    URL: Article
    DOI: 10.1111/jane.v92.2
    DOI: 10.1111/1365-2656.13856
    RVK:
    WA 15000
    Language: English
    Publisher: Wiley
    Publication Date: 2023
    detail.hit.zdb_id: 2006616-8
    SSG: 12
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  • 6
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    Online Resource
    The reliability of regional ecological knowledge to build local interaction networks: a test using seed-dispersal networks across land-bridge islands
    The Royal Society ; 2023
    In:  Proceedings of the Royal Society B: Biological Sciences Vol. 290, No. 2003 ( 2023-07-26)
    Details
    In: Proceedings of the Royal Society B: Biological Sciences, The Royal Society, Vol. 290, No. 2003 ( 2023-07-26)
    Abstract: Building ecological networks is the fundamental basis of depicting how species in communities interact, but sampling complex interaction networks is extremely labour intensive. Recently, indirect ecological information has been applied to build interaction networks. Here we propose to extend the source of indirect ecological information, and applied regional ecological knowledge to build local interaction networks. Using a high-resolution dataset consisting of 22 locally observed networks with 17 572 seed-dispersal events, we test the reliability of indirectly derived local networks based on regional ecological knowledge (REK) across islands. We found that species richness strongly influenced ‘local interaction rewiring’ (i.e. the proportion of locally observed interactions among regionally interacting species), and all network properties were biased using REK-based networks. Notably, species richness and local interaction rewiring strongly affected estimations of REK-based network structures. However, locally observed and REK-based networks detected the same trends of how network structure correlates to island area and isolation. These results suggest that we should use REK-based networks cautiously for reflecting actual interaction patterns of local networks, but highlight that REK-based networks have great potential for comparative studies across environmental gradients. The use of indirect regional ecological information may thus advance our understanding of biogeographical patterns of species interactions.
    Type of Medium: Online Resource
    ISSN: 0962-8452 , 1471-2954
    URL: Article
    DOI: 10.1098/rspb.2023.1221
    Language: English
    Publisher: The Royal Society
    Publication Date: 2023
    detail.hit.zdb_id: 1460975-7
    SSG: 12
    SSG: 25
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