Pregunta 1
Part 5 · The amateur's advantage
You are going to read an article about volunteers who collect scientific data about wildlife.
For much of the twentieth century, the study of the natural world was steadily ceded to professionals. The Victorian clergyman who spent his evenings classifying beetles, or the schoolteacher who kept meticulous records of the first cuckoo of spring, came to be regarded as a charming relic of a less specialised age – endearing, perhaps, but scarcely scientific. Real science, it was assumed, happened in laboratories and was conducted by people with doctorates and funding.
It is more than a little ironic, then, that some of the most valuable ecological data now being gathered comes from people with neither. Across Britain, tens of thousands of volunteers count butterflies along fixed routes, record the plants growing in randomly allocated squares of land, or note which birds visit their gardens on a designated weekend each winter. Individually, their observations are modest to the point of seeming trivial. Taken together, and sustained over decades, they amount to a picture of environmental change that no research team, however well resourced, could hope to assemble on its own.
Professional ecologists are, for the most part, disarmingly frank about this dependence. 'We simply couldn't afford to employ enough people to cover the ground,' one told me, with what sounded like a mixture of gratitude and embarrassment. The embarrassment, I suspect, stems from the fact that for many years amateur records were treated with a certain condescension within the discipline. They were dismissed as unreliable, riddled with misidentifications and skewed towards species that happened to be conspicuous or pleasing to the eye.
Those reservations were not entirely unfounded. A volunteer who is unsure whether she has glimpsed a marsh tit or a willow tit – two birds that even seasoned experts struggle to tell apart – may well hazard a guess, and a thousand guesses can distort a trend. But the remedy has turned out to lie less in excluding amateurs than in designing surveys around their limitations. Modern schemes ask volunteers to follow standardised methods, provide training and identification guides, and apply statistical techniques that compensate for the errors that inevitably creep in. The data that emerge are not flawless, but then neither, it should be said, are those produced by professionals, whose own surveys are often too brief and too sparse to reveal long-term change.
What intrigues me most, however, is not the data but what becomes of the people who collect them. Talk to long-standing volunteers and a pattern soon emerges. Many began with no more than a vague interest in nature and a wish to make themselves useful. After a few years of walking the same route every week, they describe becoming alert to things that had previously been invisible to them: the particular week when the hawthorn comes into flower, the way a field changes character when the farmer alters his mowing schedule. One retired engineer told me that counting moths had 'rewired' the way he looked at his own garden. Where he had once seen a lawn and some flowerbeds, he now saw a place in which something was always happening.
This, it seems to me, is a benefit that rarely features in grant applications or annual reports. Citizen science is generally justified in terms of its usefulness to researchers, and rightly so. But it also yields something less tangible: a population of people who pay close attention to the living world around them, and who are therefore more likely to notice – and to mind – when it begins to slip away.
There is a risk, of course, in romanticising all this. Volunteer schemes depend heavily on retired people with time on their hands, and organisers worry, with good reason, about who will take their place. Younger people are enthusiastic in short bursts – a one-off count, a smartphone app that identifies a flower from a photograph – but noticeably less inclined to commit to walking the same route every fortnight for twenty years. If the great strength of amateur recording lies in its persistence, then its future hinges on finding ways to make that kind of commitment appealing to a generation that has grown up expecting results to be instant.
The writer mentions the retired engineer in order to illustrate
- A. how people with technical training bring useful skills to recording
- B. how gardens can be more varied habitats than they first appear
- C. how recording can alter people's perception of familiar places
- D. why moth recording appeals more to older volunteers than younger ones
Ver respuesta y explicación
Respuesta correcta: C. how recording can alter people's perception of familiar places
Explicación
The engineer illustrates volunteers 'becoming alert to things that had previously been invisible to them': his own garden changed from 'a lawn and some flowerbeds' to a place where 'something was always happening'. A: his profession is incidental. B: the point is about how he sees the garden, not the garden's value as a habitat. D: age is discussed only in the final paragraph, and not in relation to moths.