Effects of agriculture upon populations of native passerine birds of an Alberta fescue grassland
Effects of agriculture upon populations of native passerine birds of an Alberta fescue grassland
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农业对阿尔伯塔羊茅草原本地雀形目鸟类种群的影响
DOI：
10.1139/z73-104
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发表时间：
1973
影响因子：
1.4
通讯作者：
M. T. Myres
中科院分区：
文献类型：
--
作者：
R. Owens;M. T. Myres
1970年在阿尔伯塔南部的汉德山研究了几种农业利用天然羊茅（Festuca scabrella）草地对当地雀形目鸟类种群的影响。在12块40英亩（16.2公顷）的研究地块以及两条10英里（16.1公里）长的路边路线上进行了鸟类种群普查。 研究地块上的植被和沿着的路边routes.Native羊茅草原，不受干扰的3年，支持雀形目群落组成的贝尔德的麻雀（Ammodramus bairdii），斯普拉格的pipit（Anthus spragueii），萨凡纳麻雀（Passerculus palichensis），粘土色麻雀（Spizella pallida），和西部meadowlark（Sturnella neglecta）。不完全干扰的羊茅草原，割草干草或放牧的牛，减少或消除贝尔德的麻雀和斯普拉格的？的，但允许角云雀（Eremophila alpestris）和栗子领长距（Calcarius ornatus）的入口。彻底消灭了本地的杂草。
The effects of several forms of agricultural use of native fescue (Festuca scabrella) grasslands upon populations of native passerine birds were studied in the Hand Hills of southern Alberta in 1970.Censuses of avian populations were carried out on twelve 40-acre (16.2 ha) study plots as well as on two 10-mi (16.1 km) long roadside routes. The vegetation on the study plots and along the roadside routes was described.Native fescue grasslands, undisturbed for 3 years, supported a passerine community consisting of Baird's sparrow (Ammodramus bairdii), Sprague's pipit (Anthus spragueii), savannah sparrow (Passerculus sandwichensis), clay-colored sparrow (Spizella pallida), and western meadowlark (Sturnella neglecta). Incomplete disturbance of fescue grasslands, by mowing for hay or grazing by cattle, reduced or eliminated Baird's sparrow and Sprague's pipit but permitted the ingress of horned lark (Eremophila alpestris) and chestnut-collared longspur (Calcarius ornatus). Total elimination of the native grassl...