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

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 200 m 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.

南纳格罗伊人工林样地网络鸟类点计数数据集（Nanangroe Plantation Plot Network Bird Point Count Data）记录了各调查样地沿固定200米样线（transect）设置的0米、100米、200米标记点处，为期5分钟的所有可见与闻鸟类的计数结果。该研究采用重复点间隔计数法，每1-2年开展黎明鸟类点计数。由两名不同观测者于两日分别开展重复点计数。观测者会记录每只鸟类被观测到/听到时的距离、鸟类种群丰度，以及相关附带记录（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/缺失情况或检出率作为分析指标。
南纳格罗伊研究的核心目标，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（vertebrate assemblages）的变化及其与生境变量之间的关联（Lindenmayer DB、Cunningham RB、MacGregor C、Tribolet C及Donnelly CF，2001：《林地残留生境中景观基质对动物区系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）。
研究区域位于新南威尔士州（NSW）布里宁库克湖（Lake Burrinjuck）西侧的西南坡地带，涵盖4处外来松人工林（Nanangroe、Cotway、East Bungongo与Bungongo），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、植被盖度及选定的脊椎动物类群开展重复采样，由此构建了长期监测数据集。
南纳格罗伊人工林样地网络完整项目所收集的相关数据集概要，可通过以下链接获取：http://www.ltern.org.au/index.php/ltern-plot-networks/nanangroe-plantation。