Thereare far too few data to assess this view thoroughly; for example, failed invasionsare often unrecorded, and claims that an introduced species has displaced a nativeone are often based on correlated population changes rather than experimentand/or detailed field observations. If there is a ...
Simberloff, D. 1995 . Why introduced species appear to devastate islands more the mainland areas . Pac. Sci. 49 : 87 – 97 .Simberloff D. Why introduced species appear to devastate islands more the mainland areas. Pac. Sci. 1995; 49 :87–97....
Today we’re going to be talking about an interesting approach to the problem of invasive species. 今天我们将讨论一个有趣的方法来解决入侵物种的问题。 When animals or plants are introduced to new areas, they can be dangerous for existing wildlife. 当动物或植物被引入新的地区时,它们可能对现有的...
“By conserving wildlife, we're ensuring that future generations can enjoy our natural world and the incredible species that live within it. To help protect wildlife, it's importantto understand how species interact within their ecosystems, and how they're affected by environmental and human influe...
Currently, we do not understand why insects do not dorsally tilt toward natural celestial sources of light. In some species, the DLR has two components, mediated separately by the insects’ compound eyes and by the ocelli28. Future work on the integration and luminance thresholds of these two ...
we do not understand why insects do not dorsally tilt toward natural celestial sources of light. In some species, the DLR has two components, mediated separately by the insects’ compound eyes and by the ocelli28. Future work on the integration and luminance thresholds of these two components ...
Why Do We Lecture? Since 1990 the Johns Hopkins Program for International Education in Reproductive Health (JHPIEGO) has introduced the mastery learning approach into selecte... PBN Mcintosh,President - 《Baltimore Maryland Jhpiego Feb》 被引量: 20发表: 1996年 Can we deliver better public services...
Inflammatory rhetoric may be counterproductive, encouraging us to expend resources fighting problems that are not really problems, says Davis. “The starting point should not be that these are dangerous species,” he says. “You need to focus on what they do. We’re taught, do...
Like many invasive species, cane toads (Rhinella marina) in Australia concentrate in the disturbed habitats created by human activity, rather than in pristine areas. We surveyed cane toads in the wet–dry tropics of the Northern Territory to assess the abundances, body sizes, sexes, behaviour, ...
Studying fin scrapes in a closed group of orcas shows that postmenopausal mothers put energy into helping their sons, but not daughters or grandchildren.