Tng David Y P, Apgaua Deborah M G, Campbell Mason J, Cox Casey J, Crayn Darren M, Ishida Françoise Y, Laidlaw Melinda J, Liddell Michael J, Seager Michael, Laurance Susan G W
Centre for Tropical, Environmental, and Sustainability Sciences, College of Marine and Environmental Sciences, James Cook University, Cairns, Australia.
Departamento de Ciências Florestais, Universidade Federal de Lavras, Lavras, Brazil; Centre for Tropical, Environmental, and Sustainability Sciences, College of Marine and Environmental Sciences, James Cook University, Cairns, Australia.
Biodivers Data J. 2016 Feb 24(4):e7599. doi: 10.3897/BDJ.4.e7599. eCollection 2016.
Full floristic data, tree demography, and biomass estimates incorporating non-tree lifeforms are seldom collected and reported for forest plots in the tropics. Established research stations serve as important repositories of such biodiversity and ecological data. With a canopy crane setup within a tropical lowland rainforest estate, the 42-ha Daintree Rainforest Observatory (DRO) in Cape Tribulation, northern Australia is a research facility of international significance. We obtained an estimate of the vascular plant species richness for the site, by surveying all vascular plant species from various mature-phase, remnant and open vegetation patches within the site. We also integrate and report the demography and basal areas of trees ≥ 10 cm diameter at breast height (dbh) in a new 1-ha core plot, an extension to the pre-existing forest 1-ha plot under the canopy crane. In addition, we report for the canopy crane plot new demography and basal areas for smaller-size shrubs and treelets subsampled from nine 20 m(2) quadrats, and liana basal area and abundance from the whole plot. The DRO site has an estimated total vascular plant species richness of 441 species, of which 172 species (39%) are endemic to Australia, and 4 species are endemics to the Daintree region. The 2 x 1-ha plots contains a total of 262 vascular plant species of which 116 (1531 individuals) are tree species ≥ 10 cm dbh. We estimate a stem basal area of 34.9 m(2) ha(-1), of which small stems (tree saplings and shrubs <10cm dbh) and lianas collectively contribute c.4.2%. Comparing the stem density-diversity patterns of the DRO forest with other tropical rainforests globally, our meta-analysis shows that DRO forests has a comparatively high stem density and moderate species diversity, due to the influence of cyclones. These data will provide an important foundation for ecological and conservation studies in lowland tropical forest.
We present a floristic checklist, a lifeform breakdown, and demography data from two 1-ha rainforest plots from a lowland tropical rainforest study site. We also present a meta-analysis of stem densities and species diversity from comparable-sized plots across the tropics.
热带地区森林样地很少收集并报告完整的植物区系数据、树木种群统计学信息以及包含非树木生命形式的生物量估计值。已建立的研究站是此类生物多样性和生态数据的重要储存库。位于澳大利亚北部苦难角的占地42公顷的戴恩特里雨林观测站（DRO），在一片热带低地雨林区域内设有树冠起重机装置，是一个具有国际意义的研究设施。我们通过调查该站点内不同成熟阶段、残余和开阔植被斑块中的所有维管植物物种，估算了该站点的维管植物物种丰富度。我们还整合并报告了一个新的1公顷核心样地中胸径≥10厘米的树木的种群统计学信息和断面积，该样地是对树冠起重机下方原有1公顷森林样地的扩展。此外，我们报告了从9个2×10平方米样方中抽取的较小尺寸灌木和小树苗的新种群统计学信息和断面积，以及整个样地中藤本植物的断面积和丰度。DRO站点估计的维管植物物种丰富度总计441种，其中172种（39%）为澳大利亚特有种，4种为戴恩特里地区特有种。这两个1公顷的样地共有262种维管植物，其中116种（1531株个体）是胸径≥10厘米的树种。我们估计树干断面积为34.9平方米·公顷⁻¹，其中小树干（树幼苗和胸径<10厘米的灌木）和藤本植物合计贡献约4.2%。通过对DRO森林与全球其他热带雨林的树干密度 - 多样性模式进行荟萃分析，我们发现由于气旋的影响，DRO森林具有相对较高的树干密度和中等的物种多样性。这些数据将为低地热带森林的生态和保护研究提供重要基础。
我们展示了一份来自低地热带雨林研究站点的两个1公顷雨林样地的植物区系清单、生活型分类以及种群统计学数据。我们还展示了对热带地区类似规模样地的树干密度和物种多样性的荟萃分析。
