POLYMORPHISM IN THE WHITE-THROATED SPARROW - HABITAT OCCUPANCY AND NEST-SITE SELECTION
POLYMORPHISM IN THE WHITE-THROATED SPARROW - HABITAT OCCUPANCY AND NEST-SITE SELECTION
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DOI：
10.1139/z82-061
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发表时间：
1982-01-01
影响因子：
1.4
通讯作者：
FALLS, JB
中科院分区：
文献类型：
--
作者：
KNAPTON, RW;FALLS, JB
对4个白喉麻雀种群的几个植被变量进行了分析。albicollis），以确定是否存在差异的白色条纹（WS）和棕褐色条纹（TS）形态之间的大生境（领土）和微生境（巢址）的水平。单变量和判别函数分析表明，树木相距较远，更多的光穿透森林地面，和较少的耐荫植物发生在领土的WS比TS男性。雌性的变体在巢址的选择上差异不大。在判别函数轴（大生境分析）上，WS雄鸟沿着的领地分布比TS雄鸟窄，且集中在轴的开放生境端。TS男性的领土分布跨越轴的长度，从开放到密集的栖息地。问题是为什么男性。TS雌性对占据相对狭窄的栖息地范围，而TS雄性对占据相对狭窄的栖息地范围。WS女性对占据更广泛的范围进行了讨论。
Several vegetational variables were analyzed in 4 populations of White-throated Sparrows (Z. albicollis) to determine if differences exist between the white-stripe (WS) and tan-stripe (TS) morphs at the level of macrohabitat (territory) and microhabitat (nest site). Univariate and discriminant function analyses revealed that trees were farther apart, more light-penetrated to the forest floor, and that fewer shade-tolerant plants occurred in territories of WS than TS males. Females of the morphs differed little in selection of nest sites. The distribution of territories of WS males along the discriminant function axis (macrohabitat analysis) was narrower than that of TS males, and was concentrated toward the open habitat end of the axis. The distribution of territories of TS males spanned the length of the axis, from open to dense habitat. The question of why WS male .times. TS female pairs occupy a relatively narrow range of habitat whereas TS male .times. WS female pairs occupy a much broader range is discussed.