Commercial Fishing Vessel Busted in Africa for Shark Finning
On Sept. 22, local authorities from the Central African island state of São Tomé and Príncipe boarded the Senegalese-flagged, but Spanish-linked, long-line fishing vessel Vema in a joint operation with Sea Shepherd marine conservationists and Gabonese law enforcement officers called Operation Albacore III.
Although the long-liner was licensed to fish for "tuna and similar species," inspections carried out by São Toméan authorities working on board the Sea Shepherd vessel Bob Barker revealed their fish holds were solely filled with sharks, predominantly blue sharks that are classified as "near-threatened" by the International Union for Conservation of Nature (IUCN).
Fishing line tracers (or snoods), which are the monofilament segments that support the fishing hooks, were reinforced with steel wire, thereby underlining the suspicion that the targeted species of the Vema was mainly sharks, not tuna. Steel snoods are used to prevent sharks from biting through the fishing line to escape.
Fish on board were also found gutted and processed, which is a violation of São Toméan fisheries regulations when advance approval has not been sought, which the Vema did not obtain.
Approximately two tons of sharks—including shark fins severed from their corresponding torsos—were discovered by inspectors, a fraction of what would have been uncovered had the Vema not recently returned to São Toméan waters from Walvis Bay, Namibia, a port commonly used for offloading shark fins.
Vema fishing for sharksSea Shepherd Global
The arrest of the Vema is the fourth shark-finning bust carried out over the past two years, three of which were the direct result of joint operations between São Tomé and Príncipe and Gabon, with assistance by Sea Shepherd ships and crew.
In August 2016, São Toméan authorities, again operating on board Sea Shepherd's Bob Barker, arrested a Spanish long-line fishing vessel, the Alemar Primero. On board the Alemar Primero were 87 tons of sharks and shark fins. The EU Directorate-General of Maritime Affairs and Fisheries (DG Mare) decided not to pursue charges of violating the European Union Finning Ban, despite complaints lodged by the São Toméan fisheries department.
In October 2017, the São Toméan fisheries department issued a Notice of Violation of Fisheries Rules to another Spanish ship owner, as well as a request to the European Commission to investigate an additional violation of the European Union Finning Ban, this time by a Spanish long-line fishing vessel, the Baz.
On Sept. 12th, 2018, one week prior to the arrival of the Bob Barker in the waters of São Tomé and Príncipe, the Taiwanese-flagged Shang Fu was arrested by São Toméan Coast Guard with assistance from the Portuguese Navy.
Shark species are particularly vulnerable to overfishing because they're slow to grow, late to mature and breed small numbers of offspring.
São Toméan fisheries regulations that prohibit processing of sharks at-sea and the European Union Finning Ban are existing conservation measures that ensure shark bodies are not discarded at sea to make room for the more valuable shark fins, therefore allowing far more sharks to be killed. Sharks are being killed in increasingly large numbers to meet a demand for fins to make shark fin soup.
Sea Shepherd works with authorities in African coastal states in unique joint patrols that allow shark finning operations to be uncovered through critical boardings and inspections at sea.
"Given how sensitive shark species are to overfishing, coupled with the fact that 15 percent of shark species in the Atlantic are now endangered, it is alarming that industrial fishing vessels, many from Europe, continue to massacre sharks under the guise of tuna licenses," said Sea Shepherd director of campaigns Peter Hammarstedt. "These trojan horse fishing licenses deliberately mislead African coastal states as fishing vessels [and] slaughter sharks with reckless abandon. Sea Shepherd applauds the São Toméan authorities for working together with Gabon and Sea Shepherd to bring African marine wildlife poachers to justice."
Sea Shepherd Uncovers Huge Shipments of #Shark Fins https://t.co/I1qKbFaTLG @seashepherd @CaptPaulWatson @acousteau @Greenpeace @Oceana— EcoWatch (@EcoWatch)1488980429.0
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Clear-cutting a forest is relatively easy—just pick a tree and start chopping. But there are benefits to more sophisticated forest management. One technique—which involves repeatedly harvesting smaller trees every 30 or so years but leaving an upper story of larger trees for longer periods (60, 90, or 120 years)—ensures a steady supply of both firewood and construction timber.
A Pattern in the Rings<p>The <a href="https://www.encyclopedia.com/science/dictionaries-thesauruses-pictures-and-press-releases/coppice-standards-0" target="_blank">coppice-with-standards</a> management practice produces a two-story forest, said <a href="https://www.researchgate.net/profile/Bernhard_Muigg" target="_blank">Bernhard Muigg</a>, a dendrochronologist at the University of Freiburg in Germany. "You have an upper story of single trees that are allowed to grow for several understory generations."</p><p>That arrangement imprints a characteristic tree ring pattern in a forest's upper story trees (the "standards"): thick rings indicative of heavy growth, which show up at regular intervals as the surrounding smaller trees are cut down. "The trees are growing faster," said Muigg. "You can really see it with your naked eye."</p><p>Muigg and his collaborators characterized that <a href="https://ltrr.arizona.edu/about/treerings" target="_blank">dendrochronological pattern</a> in 161 oak trees growing in central Germany, one of the few remaining sites in Europe with actively managed coppice-with-standards forests. They found up to nine cycles of heavy growth in the trees, the oldest of which was planted in 1761. The researchers then turned to a historical data set — more than 2,000 oak <a href="https://eos.org/articles/podcast-discovering-europes-history-through-its-timbers" target="_blank" rel="noopener noreferrer">timbers from buildings and archaeological sites</a> in Germany and France dating from between 300 and 2015 — to look for a similar pattern.</p>
A Gap of 500 Years<p>The team found wood with the characteristic coppice-with-standards tree ring pattern dating to as early as the 6th century. That was a surprise, Muigg and his colleagues concluded, because the first mention of this forest management practice in historical documents occurred only roughly 500 years later, in the 13th century.</p><p>It's probable that forest management practices were not well documented prior to the High Middle Ages (1000–1250), the researchers suggested. "Forests are mainly mentioned in the context of royal hunting interests or donations," said Muigg. Dendrochronological studies are particularly important because they can reveal information not captured by a sparse historical record, he added.</p><p>These results were <a href="https://www.nature.com/articles/s41598-020-78933-8" target="_blank">published in December in <em>Scientific Reports</em></a>.</p><p>"It's nice to see the longevity and the history of coppice-with-standards," said <a href="https://www.teagasc.ie/contact/staff-directory/s/ian-short/" target="_blank">Ian Short</a>, a forestry researcher at Teagasc, the Agriculture and Food Development Authority in Ireland, not involved in the research. This technique is valuable because it promotes conservation and habitat biodiversity, Short said. "In the next 10 or 20 years, I think we'll see more coppice-with-standards coming back into production."</p><p>In the future, Muigg and his collaborators hope to analyze a larger sample of historic timbers to trace how the coppice-with-standards practice spread throughout Europe. It will be interesting to understand where this technique originated and how it propagated, said Muigg, and there are plenty of old pieces of wood waiting to be analyzed. "There [are] tons of dendrochronological data."</p><p><em><a href="mailto:firstname.lastname@example.org" target="_blank" rel="noopener noreferrer">Katherine Kornei</a> is a freelance science journalist covering Earth and space science. Her bylines frequently appear in Eos, Science, and The New York Times. Katherine holds a Ph.D. in astronomy from the University of California, Los Angeles.</em></p><p><em>This story originally appeared in <a href="https://eos.org/articles/tree-rings-reveal-how-ancient-forests-were-managed" target="_blank">Eos</a></em> <em>and is republished here as part of Covering Climate Now, a global journalism collaboration strengthening coverage of the climate story.</em></p>
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