Increasing numbers of tourists are interested in observing wildlife such as African elephants, and income generated from tourism potentially aids in the protection of animals and their habitats. However, a new Journal of Zoology study reveals that wildlife tourism may be a stressor for free-ranging elephants.
Coyotes expanded their range to colonize eastern North America over the last century, where their impacts on white-tailed deer populations are highly debated. In a Journal of Wildlife Management study, researchers conducted the first long-term, large scale assessment and documented no consistent decline in deer harvest numbers after coyote arrival.
Coyotes eat deer, but not enough to limit the deer population at a large scale. A new study of deer numbers across the eastern United States has found that the arrival and establishment of coyote predators has not caused the number of deer harvested by hunters to decline.
Natural selection predicts that mutualisms -- interactions between members of different species that benefit both parties -- should fall apart. Individuals that gain from the cooperation of others but do not reciprocate (so-called cheaters) should arise and destabilize mutualisms. Yet to date, surprisingly little evidence of such cheating or destabilization exists. A team of biologists at the University of California, Riverside, has now found strong evidence of this cheating.
The endangered Santa Ana woolly star depends on catastrophic floods. Thanks to a huge dam, natural floods are now nonexistent in its home turf. Researchers use different soil treatments mimicking flood effects in its preferred habitat, exploring the effectiveness of each towards plant survival.
A new paper by an international team of researchers argues that decision-makers and fishing organizations must recognize the growing role of recreational fishing and the potential pressures it places on fish stocks.
The bird's trek between its breeding grounds in the central and western boreal forest of North America and its winter home in the Amazon Basin is one of the longest songbird migrations recorded. Describing a route arcing across North America and including a transoceanic flight to South America, the study confirms an epic migration journey that scientists had long suspected but not yet proved. Tracking their route is key to solving the birds' decline.
Blackpoll warblers that breed in western North America may migrate up to 12,400 miles roundtrip each year, some crossing the entire North American continent before making a nonstop trans-ocean flight of up to four days to South America. Now a new study led by first author Bill DeLuca at the University of Massachusetts Amherst and project lead Ryan Norris at the University of Guelph, Ontario offers details of the feat.
New or upgraded roads in the Greater Serengeti Ecosystem around Serengeti National Park will not reduce growing pressure on the ecosystem, a study shows.
Amidst worldwide talks about 'Insectageddon': the extinction of 40 percent of the world's insects, according to a recent scientific review, a response was published in the open-access journal Rethinking Ecology. Its authors point out major flaws in the earlier study: query- and geographically biased summaries; mismatch between objectives and cited literature; and misuse of existing conservation data. Instead of serving as a wake-up call, those would rather compromise the credibility of conservation science, they warn.