新墨西哥州中南部奇瓦瓦沙漠牧场上牛和外来大羚羊的共同分布情况

IF 2.4 3区 环境科学与生态学 Q2 ECOLOGY
Louis C. Bender , Andrew Cox
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引用次数: 0

摘要

我们在新墨西哥州中南部的奇瓦瓦沙漠牧场研究中心(Cihuahuan Desert Rangeland Research Center,CDRRC)调查了影响牛和外来大羚羊共同分布的因素。我们于 2019-2022 年在奇瓦瓦沙漠牧场研究中心建立了一个相机诱捕网格,并将牛(Bos indicus)和大羚羊(Oryx gazella gazella)的占有率模拟为栖息地属性和其他物种存在的函数。大羚羊和牛的物种交互因子为 3.9,除水域地点外,任何一种动物的存在都不会对其中任何一种动物的占有率产生负面影响。同样,大羚羊和牛对 CDRRC 地形的占有率呈正相关(≥ 0.77)。总边缘和地形崎岖度对大羚羊的占据有微弱的负面影响。牛的栖息地与远离道路、靠近水域的地区以及景观中栖息地斑块数量较多(即半径为 1 千米的范围内)有微弱的相关性。大羚羊和牛在水源地的出现呈负相关(r = -0.20);使用模式表明,当牛出现时,大羚羊会避免使用水源地。我们的研究结果似乎反映了大羚羊和牛在 CDRRC 地貌的大部分地区有共同的偏好和分布,而不是受干扰竞争或专制主义驱使而形成的隔离。例外情况是,在水源地,大羚羊明显次于牛。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Codistribution of Cattle and Exotic Oryx on Chihuahuan Desert Rangeland, South-Central New Mexico

We investigated factors influencing codistribution of cattle and exotic oryx on the Chihuahuan Desert Rangeland Research Center (CDRRC), south-central New Mexico. We established a camera-trapping grid on the CDRRC, 2019–2022, and modeled occupancy of cattle (Bos indicus) and oryx (Oryx gazella gazella) as a function of habitat attributes and presence of the other species. Species interaction factors were > 3.9 for oryx and cattle, and presence of either ungulate never negatively influenced occupancy of either except at water sites. Similarly, occupancy of the CDRRC landscape was positively correlated (≥ 0.77) between oryx and cattle. Occupancy of oryx was weakly negatively influenced by total edge and terrain ruggedness. Cattle occupancy was weakly associated with areas away from roads, nearer water, and with greater number of habitat patches in the landscape (i.e., within a 1-km radius). Presence of oryx and cattle at water sites was negatively correlated (r = –0.20); patterns of use indicated that oryx avoided using water sites when cattle were present. Rather than segregation driven by interference competition or despotism, our results appeared to reflect common preferences and distribution of oryx and cattle for much of the CDRRC landscape. The exception to this was apparent subdominance of oryx to cattle at water sites.

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来源期刊
Rangeland Ecology & Management
Rangeland Ecology & Management 农林科学-环境科学
CiteScore
4.60
自引率
13.00%
发文量
87
审稿时长
12-24 weeks
期刊介绍: Rangeland Ecology & Management publishes all topics-including ecology, management, socioeconomic and policy-pertaining to global rangelands. The journal''s mission is to inform academics, ecosystem managers and policy makers of science-based information to promote sound rangeland stewardship. Author submissions are published in five manuscript categories: original research papers, high-profile forum topics, concept syntheses, as well as research and technical notes. Rangelands represent approximately 50% of the Earth''s land area and provision multiple ecosystem services for large human populations. This expansive and diverse land area functions as coupled human-ecological systems. Knowledge of both social and biophysical system components and their interactions represent the foundation for informed rangeland stewardship. Rangeland Ecology & Management uniquely integrates information from multiple system components to address current and pending challenges confronting global rangelands.
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