Nanangroe Plantation Plot Network: Bird Point Count Data, Southwest Slopes, NSW, Australia, 2012

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.

南纳格罗（Nanangroe）人工林样地网络鸟类点计数（Bird Point Count）数据集，记录了各调查样地沿200米固定样线（transect），于0米、100米、200米三个观测桩处开展的5分钟时段内所见与听闻的所有鸟类的数量。该数据集采用重复点间隔计数法，每1-2年开展一次黎明鸟类调查；调查由两名不同观测者分别在两日完成。记录内容涵盖每只鸟类被观测/听闻时的距离、鸟类多度，以及相关轶事性记录（如繁殖行为等）。分析中通常以观测者50米范围内的鸟类物种存在/缺失情况或检测率作为分析基础。

本项南纳格罗研究的核心目标，是直接量化当周边景观基质（landscape matrix）从半清理放牧景观转变为以外来软木人工林为主的景观时，林地脊椎动物群落（woodland vertebrate assemblages）的变化及其与生境变量（habitat variables）之间的关联。相关引用文献：Lindenmayer DB、Cunningham RB、MacGregor C、Tribolet C及Donnelly CF, 2001,《景观基质对林地剩余生境动物的影响前瞻性纵向研究：实验设计与基线数据》，《生物保护（Biological Conservation）》，第101卷第2期，第160页。

调查区域位于布里金杰克湖（Lake Burrinjuck）西侧的新南威尔士州（NSW）西南坡地带，涵盖4处外来松人工林（南纳格罗、科特韦、东邦贡戈与邦贡戈），以及毗邻这些人工林的私有地块。自1998年起，研究团队对所有样地的植被结构、覆盖度及选定脊椎动物类群开展重复采样，由此构建了长期监测数据集。

南纳格罗人工林样地网络完整项目所采集的相关数据包概要，可通过以下链接获取：http://www.ltern.org.au/index.php/ltern-plot-networks/nanangroe-plantation。