Nanangroe Plantation Plot Network: Bird Point Count Data, Southwest Slopes, NSW, Australia, 1998–2011

The Nanangroe Plantation Plot Network Bird Point Count Data contains counts of all birds seen and heard over five minute periods at each of the 0 m, 100 m and 200 m posts along a permanent 200m transect at each site. Dawn bird counts are conducted every 1-2 years using repeated point interval counts. Repeated point counts by two different observers on two different days are undertaken. The distance that each bird was seen/heard at is recorded along with bird abundance and any anecdotal comments (e.g. breeding behaviour). Bird species presence/absence or detection rates within 50 m of the observer is commonly used for analysis.

The principle objective of the Nanangroe study is to directly quantify changes in woodland vertebrate assemblages and their relationships with habitat variables when the surrounding landscape matrix is converted from a semi-cleared grazing landscape to a landscape dominated by an exotic softwood plantation (Lindenmayer, DB, Cunningham, RB, MacGregor, C, Tribolet, C & Donnelly, CF 2001, ‘A prospective longitudinal study of landscape matrix effects on fauna in woodland remnants: experimental design and baseline data’, Biological Conservation, vol 101 no 2, p. 160).

The study area is located in the Southwest slopes of NSW west of Lake Burrinjuck and includes four exotic Pine Plantations (Nanangroe, Cotway, East Bungongo and Bungongo), as well as private properties adjacent those plantations. Repeated sampling of the vegetation structure and cover and selected vertebrate groups on all sites from 1998 has created a long term dataset.

A synopsis of related data packages which have been collected as part of the Nanangroe Plantation Forest Plot Network’s full program is provided at http://www.ltern.org.au/index.php/ltern-plot-networks/nanangroe-plantation.

楠南格鲁（Nanangroe）人工林样地网络鸟类点位计数（Bird Point Count）数据集，记录了各调查样地内沿200米固定样线（transect）设置的0米、100米及200米标记点位处，为期5分钟的所有目击与鸣唱鸟类的数量。该研究采用黎明时段鸟类点位计数法，每1-2年开展一次，采用重复点位计数法采集数据。研究由两名不同观测者在两日分别开展重复点位计数工作。每只鸟类被目击或鸣唱时的距离、鸟类丰度，以及相关辅助记录（如繁殖行为等）均会被记录。实际分析中，通常以观测者50米范围内的鸟类存在与否或检测率作为分析对象。

楠南格鲁研究的核心目标是，当周边景观基质从半开垦放牧景观转变为以外来软质人工林为主的景观时，直接量化林地脊椎动物群落的变化及其与生境变量的关联（Lindenmayer DB、Cunningham RB、MacGregor C、Tribolet C与Donnelly CF，2001：《景观基质对林地残存物中动物的影响前瞻纵向研究：实验设计与基线数据》，《生物保护》（Biological Conservation），第101卷第2期，第160页）。

研究区域位于新南威尔士州（NSW）巴林杰克湖以西的西南坡地带，涵盖4处外来松类人工林（楠南格鲁、科特韦、东邦贡戈及邦贡戈），以及毗邻这些人工林的私人地块。自1998年起，研究团队对所有样地的植被结构、覆盖度及选定的脊椎动物类群开展重复采样，由此构建了长期观测数据集。

作为楠南格鲁人工林样地网络完整项目的一部分，相关配套数据集的概要可通过以下链接获取：http://www.ltern.org.au/index.php/ltern-plot-networks/nanangroe-plantation。