
Graham Watkins: Runaway tourism threatens the future of the Galapagos Islands
Today, this extraordinary archipelago, which has inspired countless visitors, is the premier natural environment in the world: one of the last well-conserved tropical archipelagos we have, and home to numerous unique species.
Since Charles Darwin's 1835 visit and his use of the islands to illustrate evolution and adaptive radiation in the Origin of Species, the islands have been the focus of additional important research in understanding natural selection. But the islands were long host to whalers and colonists too, who left a series of legacies. These include the decimation of tortoise populations and the introduction of many new species that have wreaked havoc on the native flora and fauna.
The islands are better conserved today than they were 100 years ago. Unfortunately, the runaway development of tourism means that the Galapagos are at risk again. Economic growth in the islands has drawn immigrants and increased the risks of new and increasingly dangerous, invasive species arriving. Resolving this problem will require strengthening governance, ensuring sustainable tourism, developing an island culture and continuing to restore the islands.
The solutions will be led by the people of Ecuador and will necessarily involve ensuring the standard of living of Galapagos residents. But it is the co-responsibility of the world to support the government of Ecuador in the process. We can conserve Galapagos, but only through the concerted actions of all of the actors. If we can achieve sustainability, the value to the world will extend well beyond saving one of the last remaining natural treasures, to being a model for sustainable societies everywhere.
Hashtags

Try Our AI Features
Explore what Daily8 AI can do for you:
Comments
No comments yet...
Related Articles


The Independent
2 hours ago
- The Independent
Hair found in Inca device could change what's known about medieval civilisation
A hair strand uncovered from an Incan astronomical device suggests record-keeping in the empire was prevalent not only among elite individuals but also practiced by commoners. The finding, published in the journal Science Advances, changes what's known about numerical literacy among people in the medieval civilisation. Incas used knotted-string devices called khipus to maintain records, especially numerical information. These devices consisted of a main cord with numerous pendant cords attached, encoding information via the use of knots, their positions, and the colours. Sometimes human hair is found wound on a khipu as a 'signature' to indicate its creator. 'Hair in the ancient Andes was a ritually powerful substance that represented the individual from whom it came,' researchers explained. Until now, Spanish colonial-era documents have hinted that only male elites made khipus. It was thought that 'khipu literacy' was not widespread outside of bureaucrats charged with keeping records. 'On the basis of primarily Spanish-language colonial chronicles, it is thought that khipus were created exclusively by male bureaucratic elites,' researchers wrote. Much later in the 19th and early 20th centuries, the production of khipus was documented even among Andean labourers, peasant farmers, and female peasants. However, the latest analysis of human hair woven into a late 15th century khipu by its creator suggests that even then low-ranking Inkas made and used khipus. This particular khipu was found at a German auction with little documentation and later dated to 1498 AD. It's main cord was made of human hair about 104 centimetrers long, folded and twisted, representing about eight years of growth, researchers say. Scientists utilised advances in chemical analysis to make simultaneous measurements of levels of different elements, including carbon, nitrogen, and sulphur, from the hair sample. They found that the person who made the device ate a commoner's diet of tubers and greens, rather than a bureaucrat's diet of meat and maize. Further analysis, measuring oxygen and hydrogen values, determined that this low-ranking commoner likely lived in present-day southern Peru or northern Chile. 'Contrary to previous assumptions, commoners in the Inka Empire apparently created Inka-style khipus as well,' scientists wrote. The study results also corroborate other recent findings that women also made these recording systems, together challenging the idea that khipu literacy was the sole domain of male elites. 'Khipu literacy in the Inka Empire may have been more inclusive and widespread than hitherto thought,' researchers concluded.


Reuters
21 hours ago
- Reuters
Ethiopian fossils reveal new species in human evolutionary lineage
Aug 13 (Reuters) - Researchers have unearthed tooth fossils in Ethiopia dating to about 2.65 million years ago of a previously unknown species in the human evolutionary lineage, one that lived in the same time and place as the earliest-known member of the genus Homo to which our own species belongs. The scientists discovered in the Ledi-Geraru research project area of northeastern Ethiopia's Afar Region 10 teeth - six molars, two incisors, one premolar and one canine - that they concluded belonged to a new Australopithecus species. The teeth came from two individuals. Until now, six species of the genus Australopithecus, an important early human ancestor that displayed a mix of ape-like and human-like traits, were known from fossils at various African sites. The researchers said the newly found teeth bore traits indicating they belonged to a seventh species. A genus is a group of closely related species that share similar characteristics. For example, lions and tigers are from the same genus but represent different species. The scientists also discovered three other teeth dating to 2.59 million years ago that had traits showing they belonged to the oldest-known species of Homo, one that was first revealed by a jawbone unearthed in the same vicinity in 2013. Scientists have not yet assigned names to the Australopithecus and Homo species represented by these 13 teeth because of the incomplete nature of the fossil remains. Our species Homo sapiens is the most recent member of the Homo genus, first appearing roughly 300,000 years ago in Africa before later spreading worldwide. The new dental fossils provide insight into a poorly understood period in human evolution. The close age of the teeth suggests that this newly identified Australopithecus species coexisted in this region with the early Homo species, raising questions about whether they competed for the same resources. The teeth also indicate that there were four hominins - as species in the human evolutionary lineage are known - that inhabited East Africa at the time. Previous fossils showed that another Australopithecus species and a species of Paranthropus, a hominin possessing a specialized skull adapted for heavy chewing, lived in East Africa during this time. An additional Australopithecus species also inhabited southern Africa, bringing the number of hominins then on the continent to five. The presence of these contemporaneous hominins illustrates the complicated nature of the human evolutionary process. "This reinforces the idea that the story of human evolution is not of a single lineage changing slowly through time," said University of Nevada, Las Vegas paleoanthropologist Brian Villmoare, lead author of the research published on Wednesday in the journal Nature, opens new tab. "Rather, the pattern of human evolution is similar to that of other organisms, repeatedly branching into multiple species throughout the fossil record, many of whom lived at the same time," Villmoare added. The researchers are seeking clues about the nature of any interaction between the Australopithecus and Homo species represented by the 13 teeth. "We are currently analyzing teeth to see if we can tell if they ate the same thing," said Arizona State University paleoecologist and project co-director Kaye Reed. If so, they may have fought over resources, Reed said. Crude stone tools dating to about the same time were previously discovered nearby, Reed said, probably made by the Homo species. The researchers determined the age of the teeth using a technique that dated feldspar crystals contained in volcanic ash in the sediments where they were discovered based on radioactive decay of the element argon. The Afar Region, one of Earth's hottest and lowest places, is an arid expanse of badlands. But at the time of these species, rivers flowed across a vegetated landscape into shallow lakes in a landscape populated by a splendid array of animals. These included giraffes, horses, pigs, elephants, hippos and antelopes as well as predators such as saber-toothed cats and hyenas. Homo is generally thought to have descended from a species of Australopithecus, though the exact species and the timing have been a matter of debate. Australopithecus eventually died out. Australopithecus includes the famous fossil Lucy, who was a member of the species Australopithecus afarensis who lived approximately 3.18 million years ago. Lucy's remains were discovered in 1974, also in the Afar Region. The newly discovered teeth had characteristics that showed they did not belong to Lucy's species, the researchers said. "This new Australopithecus species is in no way some 'missing link,' and we actually don't think that it was necessarily ancestral to any known species," Villmoare said. "Species arose and many went extinct," Reed said. "Each find is a piece of the puzzle that puts human evolution into a twiggy tree, rather than a linear graphic."


Daily Mail
a day ago
- Daily Mail
Missing chapter of human evolution dating back 2.8 million years uncovered in Africa
A lost chapter in human evolution has been discovered among a collection of teeth which dates back 2.8 million years. Researchers from Arizona State University announced that they have found a previously unknown species of ancient humans which appear to have coexisted with members of the genus Homo, our direct ancestors, in Africa. The team added that this era, between 2.6 and 2.8 million years ago, was a critical period in human evolution because it marks the earliest appearance of the Homo species ever found. Researchers also discovered the oldest known stone tools at the Ledi-Geraru site in the Afar region of Ethiopia. In 2013, another team unearthed a 2.8-million-year-old Homo jawbone at the same site. However, the 13 teeth uncovered here recently do not belong to our direct ancestors. Instead, the research team found that they came from a new member of the Australopithecus species, a group closely related to modern humans who lived in Africa between two and four million years ago. Unlike previous fossils from the species Australopithecus afarensis, these teeth were noticeably different, showing that a new evolution of early humans developed in this region and overlapped with members of our family tree. Researchers said this lost Australopithecus species suggests that human evolution was complex, with multiple species coexisting, not just a simple progression from ape to human. The most famous member of the Australopithecus afarensis species has been a fossil named 'Lucy,' whose fossil skeleton was discovered in 1974 in Hadar, Ethiopia. Australopithecus walked upright, a key human trait, but examinations of skull fragments have found they had smaller brains and ape-like features, such as larger teeth and robust jaws for chewing tough plants. However, researchers have not been able to find any fossils at the Ledi-Geraru site which match Lucy's species. The differences in the 13 Australopithecus teeth unearthed there, along with the presence of the Homo species, suggests that Lucy's species did live beyond 2.95 million years ago. ASU paleoecologist Kaye Reed said: 'This new research shows that the image many of us have in our minds of an ape to a Neanderthal to a modern human is not correct — evolution doesn't work like that.' 'Here we have two hominin species that are together. And human evolution is not linear, it's a bushy tree, there are life forms that go extinct,' Reed added in a statement. The 'bushy tree' theory Reed mentioned refers to the concept of multiple early human species living simultaneously in ancient times. Some would go extinct while others would lead to the development of modern humans, like the species Homo. Researchers added that the new fossils don't represent a single 'missing link' but rather show evidence of diverse overlapping during this evolutionary period. 'We know what the teeth and mandible of the earliest Homo look like, but that's it,' Reed explained. 'This emphasizes the critical importance of finding additional fossils to understand the differences between Australopithecus and Homo, and potentially how they were able to overlap in the fossil record at the same location,' the study author continued. The genus Homo includes modern humans and our closest extinct relatives. The Ledi-Geraru Homo fossils, including the new teeth and the previously found jawbone, revealed that early Homo individuals likely had slightly larger brains and smaller teeth than Australopithecus. This suggests that the human diet was already shifting millions of years ago towards more meat or softer plants than Lucy's species ate. These humans also learned to use primitive tools, which the ASU researchers also found at the site. The fossils' age was determined by dating volcanic ash layers containing feldspar crystals, a method that pinpoints the time of eruptions sandwiching the fossils. The Ledi-Geraru landscape, once a vegetated area with rivers and lakes, was much different than today's arid badlands. The ASU team noted that future research will focus on tooth enamel to explore diet and potential interactions between the Homo and Australopithecus, such as whether these species competed for food or peacefully lived in different ecological regions of Africa.