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SCIENCE MATTERS: Easy way out for wildlife conservation isnB次元官网网址檛 what it appears

By David Suzuki
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David Suzuki is a scientist, broadcaster, author and co-founder of the David Suzuki Foundation. (Photo courtesy of David Suzuki Foundation)

By David Suzuki

H.L. Mencken once wrote that B次元官网网址渢here is always a well-known solution to every human problem B次元官网网址 neat, plausible, and wrong.B次元官网网址

This is often the case with societyB次元官网网址檚 responses to human-caused wildlife decline.

Take salmon populations along B.C.B次元官网网址檚 coast. According to assessments by the Committee on the Status of Endangered Wildlife in Canada, only two of 29 wild chinook salmon populations arenB次元官网网址檛 at risk of extinction. (Data is lacking to determine the status of three. All the rest are at risk.)

A number of factors cause salmon populations to decline, including overfishing, climate change and stream, river and estuary degradation. Because itB次元官网网址檚 a challenge to reduce catch quotas, restore streams and change development and resource-extraction practices, authorities often take an easier way to recover dwindling salmon numbers: hatcheries. Now, 23 federally controlled hatcheries release hundreds of millions of juvenile salmon into the wild every year in attempts to maintain fisheries and offset their decline.

Yet salmon hatcheries only appear to be a simple solution. Salmon released from hatchery stocks add strands of complexity to the threats facing wild salmon, and are believed to contribute to wild salmon declines.

B次元官网网址淭he latest science shows that large hatcheries cause wild salmon more harm than good,B次元官网网址 David Suzuki Foundation senior research and policy analyst Jeffery Young said. B次元官网网址淗atchery salmon weaken wild salmon genetics, compete with wild populations for limited resources and drive fisheries that continue to harm wild fish.B次元官网网址

Human activity is also putting caribou at risk throughout Canada. Their decline is driven by habitat loss and degradation, especially from linear corridors such as seismic lines, logging roads and recreational trails. Predators use these corridors to increase their caribou-hunting success rates.

In September 2020, Jasper National Park declared that one of three caribou populations living within its boundaries had winked out, while the other two were B次元官网网址渄angerously small.B次元官网网址 Declines in Jasper have been driven by poor wildlife management, like elk introduction, and compounded by habitat loss and degradation in adjacent ranges.

Although the park has stabilized the elk populations, evidence from JasperB次元官网网址檚 recently extirpated Maligne caribou herd, as well as other available scientific research, indicates more should be done, including limiting human access. Backcountry ski and snowmobile supply routes into JasperB次元官网网址檚 Tonquin Valley pack trails and bring noise and people into high-quality caribou habitat. Recreational activity can stress caribou, displace them from the best habitat and make it easier for wolves to gain access and kill them.

In November 2020, Parks Canada announced it was contemplating its first captive caribou breeding program in Jasper. B次元官网网址淲e expect a captive herd for breeding purposes could start producing animals for release as early as 2024,B次元官网网址 JasperB次元官网网址檚 conservation manager said.

In February 2021, Jasper lifted access restrictions mid-season in the highly imperilled Tonquin herdB次元官网网址檚 range, despite the conservation communityB次元官网网址檚 calls to keep them in place to give the caribou a greater chance of survival. It appears the parkB次元官网网址檚 staff B次元官网网址 unwilling to invest in current conservation measures to decrease risks and apply a precautionary approach to the remaining herds B次元官网网址 is banking on captive breeding as the panacea to its declining caribou problem.

But as with hatcheries, captive breeding programs are not as simple as they appear. Captive breeding is a risky undertaking that involves semi-domesticating wildlife. The risk is compounded if it entails population augmentation B次元官网网址 taking caribou from places where theyB次元官网网址檙e surviving and putting them into an environment where survival has failed in the past.

Further, as the icing on the oversimplified-solution cake, captive breeding is often accompanied by predator control B次元官网网址 killing animals that prey on caribou. This practice throws a wrench into the elegant symbiotic dance between predator and prey that has existed for thousands of years.

Steve Jobs once said, B次元官网网址淚f you define the problem correctly, you almost have the solution.B次元官网网址

Here the primary problem is our failure to set limits to the impacts of human activities in spaces wildlife depend on to survive. Our current solutions indicate that we havenB次元官网网址檛 had the courage to address our problems head-on, nor the sense of responsibility required to roll up our sleeves and clean up our messes.

As long as we capitulate and default to easy solutions to complex problems, weB次元官网网址檒l likely continue to drive wildlife decline and disappearance.

David Suzuki is a scientist, broadcaster, author and co-founder of the David Suzuki Foundation. Written with contributions from David Suzuki Foundation boreal project manager Rachel Plotkin.



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