Jervis Bay Booderee National Park Plot Network: Temporal Trends in Mammal Responses to Fire Reveals the Complex Effects of Fire-regime Attributes, 2003-2013

Abstract: This terrestrial mammal trapping and spotlighting data package comprises time series data for 11 mammal species at 97 long-term sites in south-eastern Australia. Observations were made between 2003 and 2013.

The objectives of this research were to identify which fire regime attributes affect temporal change in the presence and abundance of Australian native mammals. In the associated research publication, the researchers explored how temporal aspects of fire regimes influenced both the presence and the conditional abundance of species. The key fire regime components examined as part of the research were: (i) severity of a major fire in 2003, (ii) the interval between the last major fire (2003) and the fire prior to that, and (iii) number of past fires. This long-term dataset has enabled quantification of the interactions between survey year and each fire regime variable, an ecological relationship notably missing from temporally-restricted studies. In summary, multiple aspects of fire regimes influenced temporal variation in the presence and abundance of mammals. The best models indicated that 6 of the 11 species responded to two or more fire regime variables, with two species influenced by all three fire regime attributes. Almost all species responded to time since fire, either as an interaction with survey year or as a main effect. Fire severity or its interaction with survey year was important for most terrestrial rodents. The number of fires at a site was significant for species of terrestrial rodents and several other species. Key findings contain evidence of the effects on native mammals of heterogeneity in fire regimes. Refer to the relevant research paper for more detail. The Jervis Bay Plot Network study forms part of the collection of data packages by this plot network.

A synopsis of related data packages which have been collected as part of the Jervis Bay Plot Network’s full program is provided at https://doi.org/10.25911/5c3c070a5ee94

Project funding: Between 2012 and 2018 this project was part of the Long Term Ecological Research Network (LTERN), a facility within the Terrestrial Ecosystem Research Network (TERN) and supported by the Australian Government through the National Collaborative Research Infrastructure Strategy. This research has also been funded by means of an ARC Linkage Grant.

摘要：本陆生哺乳动物诱捕与夜间聚光灯调查数据包包含澳大利亚东南部97个长期监测样地的11种哺乳动物的时间序列数据，观测时段为2003年至2013年。

本研究旨在明确哪些火制度（fire regime）属性会影响澳大利亚本土哺乳动物的出现率与多度的时间动态变化。在相关研究论文中，研究者探讨了火制度的时间维度如何同时影响物种的出现率与条件多度。本研究考察的核心火制度参数包括：（1）2003年重大火灾的过火强度；（2）最近一次重大火灾（2003年）与前一次重大火灾之间的间隔时长；（3）历史火灾发生次数。

本长期数据集使得我们能够量化调查年份与各火制度变量之间的交互效应，这类生态关系在时间尺度受限的研究中往往难以被揭示。综上，火制度的多个维度均会影响哺乳动物出现率与多度的时间变异。最优模型结果显示，11个物种中有6个对2种及以上火制度变量存在响应，另有2个物种同时受3种火制度属性的影响。几乎所有物种均对火灾后间隔时长存在响应，其响应形式或表现为与调查年份的交互效应，或表现为主效应。过火强度及其与调查年份的交互效应对多数陆生啮齿类物种具有重要影响；样地的历史火灾次数则对陆生啮齿类及其他数个物种的种群动态具有显著作用。本研究的核心发现证实了火制度异质性对本土哺乳动物的影响效应。

更多细节请参阅相关研究论文。杰维斯湾样地网络（Jervis Bay Plot Network）研究是该样地网络所收录数据包的一部分。杰维斯湾样地网络完整项目所收录的相关数据包概要可通过以下链接获取：https://doi.org/10.25911/5c3c070a5ee94

项目资助：2012年至2018年间，本项目隶属于长期生态研究网络（Long Term Ecological Research Network, LTERN），该网络是陆地生态系统研究网络（Terrestrial Ecosystem Research Network, TERN）下设的科研设施，由澳大利亚政府通过国家协同研究基础设施战略提供资助。本研究同时获得了澳大利亚研究委员会（Australian Research Council, ARC）联动项目基金（ARC Linkage Grant）的支持。