Fishing Gear Entanglement Number One Killer of Right Whales
The population of endangered North Atlantic right whales is under threat due to entanglement in fishing gear and a resulting drop in birth rates, according to a study published by the journal Frontiers in Marine Science.
Even though North Atlantic rightwhales numbers have modestly increased from 295 individuals in 1992 to 500 individuals in 2015, the rate of baby right whales born annually have dropped by nearly 40 percent since 2010, the study states.
Due to these low calving rates, the study implies that the whale's already-precarious population faces a grim future.
"Our review of the recent science suggests that fishing gear entanglements are increasing in number and severity, and that this source of injury and mortalities may be overwhelming recovery efforts," the authors warn.
A 2015 draft marine mammal stock assessment for right whales from the National Marine Fisheries Service (NMFS) reported that between 2009 and 2013, an average of 4.3 right whales were killed by human activities each year—nearly all attributable to entanglement in fishing gear.
A whale tangled in fishing gear such a ropes and nets can suffer and ultimately die from a painful death. The International Whaling Commission Entanglement states on its website that entanglement can lead to drowning, laceration, infection and starvation. According to a report cited by the organization, an estimated 308,000 whales and dolphins die each year due to entanglement in fishing gear.
Even whales that survive entanglement can suffer from long-term negative physical and reproductive effects, Scott Kraus, a scientist with the New England Aquarium in Boston and study author, described to the Associated Press.
"They are carrying heavy gear around, and they can't move as fast or they can't feed as effectively," he said. "And it looks like it affects their ability to reproduce because it means they can't put on enough fat to have a baby."
The research found that entanglements have surpassed ship strikes as the number one killer of right whales in recent years. From 1970 to 2009, 44 percent of right whale deaths were due to ship strikes and 35 percent due to entanglements. But from 2010 to 2015, 15 percent of deaths were due to vessel strikes and 85 percent due to entanglements.
Beloved Orca Found Dead Due to Entanglement in Fishing Gear https://t.co/iXOOKsP1bx @World_Wildlife @anon99percenter— EcoWatch (@EcoWatch)1452301287.0
Right whale deaths from vessel strikes have declined thanks to governmental regulations that lowered ship speed limits near right whale habitats in 2008. But on the flip side, "despite a nearly 20-year U.S. federal effort to reduce accidental kills of whales in fishing gear, sub-lethal and lethal entanglement rates have increased, and there is no evidence that current fishing regulations have been effective at reducing mortality," the study states.
"As of 2015, 83 percent of all right whales display scars or carry ropes indicative of past entanglements," the study says.
As CBC News noted from the study, growth in offshore fishing and the introduction of of heavier offshore fishing gear and increased movement of existing whale populations has led to ever-grislier injuries from entanglement.
"As they encounter stronger ropes and heavier gear, the damage to the animals is more severe and lasts longer," Kraus told CBC News. "It's like if you break a leg, it takes you weeks or months to recover."
Researchers are currently working on ways to reduce entanglement. Science Daily reported that aquarium scientists Amy Knowlton and Tim Werner are working on developing fishing ropes that can more readily break when whales become enmeshed in them.
The authors of the current report stress that right whales "are not yet a conservation success story" and "need immediate and significant management intervention to reduce mortalities and injuries from fishing gear."
"Managers need a better understanding about the causes of reduced calving rates before this species can be considered on the road to recovery," the authors conclude. "Failure to act on this new information will lead to further declines in this population's number and increase its vulnerability to extinction."
North Atlantic right whales, identifiable by their distinctive white spots on its head, have had a long history with human exploitation, especially during the whaling industry era, the World Wildlife Fund states. Whaling for this species became illegal in the 1930s as the population neared extinction. The whales are also under threat due to climate change and warming oceans that affect their food sources.
EcoWatch Daily Newsletter
The Washington Redskins will retire their controversial name and logo, the National Football League (NFL) team announced Monday.
By Alyssa Murdoch, Chrystal Mantyka-Pringle and Sapna Sharma
Summer has finally arrived in the northern reaches of Canada and Alaska, liberating hundreds of thousands of northern stream fish from their wintering habitats.
A Good News Story?<p>On the surface, the <a href="https://doi.org/10.1111/fwb.13569" target="_blank">results from our study</a> appear to provide a "good news" story. Warming temperatures were linked to higher numbers of fish, more species overall and, therefore, potentially more fishing opportunities for northerners.</p><p>Initially, we were surprised to learn that warming was increasing the distribution of cold-adapted fish. We reasoned that modest amounts of warming could lead to benefits such as increased food and winter habitat availability without reaching stressful levels for many species.</p>
Photo of Arctic grayling (left) and Dolly Varden trout (right). Alyssa Murdoch / Lilian Tran / Nunavik Research Centre and Tracey Loewen / Fisheries and Oceans Canada<p>Yet, not all fish species fared equally well. Ecologically unique northern species — those that have evolved in colder, more nutrient-poor environments, such as Arctic grayling and Dolly Varden trout — were showing declines with warming.</p>
Fish Strandings and Buried Eggs<p>Recent news headlines run the gamut for Pacific salmon — from their increased escapades <a href="https://nunatsiaq.com/stories/article/more-pacific-salmon-showing-up-in-western-arctic-waters/" target="_blank">into the Arctic</a> to <a href="https://www.juneauempire.com/news/warm-waters-across-alaska-cause-salmon-die-offs/" target="_blank">massive pre-spawning die-offs</a> in central Alaska. Similarly, results from our study revealed different outcomes for fish depending on local climatic conditions, including Pacific salmon.</p><p>We found that warmer spring and fall temperatures may be helping juvenile salmon by providing a longer and more plentiful growing season, and by supporting early egg development in northern regions that were previously too cold for survival.</p><p>In contrast, salmon declined in regions that were experiencing wetter fall conditions, pointing to an increased risk of flooding and sedimentation that could bury or dislodge incubating eggs.</p>
Headwaters of the Wind River within the largely intact Peel River watershed in northern Canada. Don Reid / Wildlife Conservation Society Canada / Author provided<p>Interestingly, we found that certain climatic combinations, such as warmer summer water temperatures with decreased summer rainfall, were important in determining where Pacific salmon could survive. Summer warming in drier watersheds led to declines, suggesting that lowered streamflows may have increased the risk of fish becoming stranded in subpar habitats that were too warm and crowded.</p>
The Fate of Northern Fisheries<p>The promise of a warmer and more accessible Arctic has attracted mounting interest in new economic opportunities, <a href="https://doi.org/10.1016/j.marpol.2019.103637" target="_blank">including fisheries</a>. As warming rates at higher latitudes are already <a href="https://www.ipcc.ch/sr15/" target="_blank">two to three times global levels</a>, it seems probable that northern biodiversity will experience dramatic shifts in the coming decades.</p><p>Despite the many unknowns surrounding the future of Pacific salmon, many fisheries are currently <a href="https://doi.org/10.1080/03632415.2017.1374251" target="_blank">thriving following warmer and more productive northern oceans</a>, and some <a href="https://doi.org/10.14430/arctic68876" target="_blank">Arctic Indigenous communities are developing new salmon fisheries</a>.</p><p>As warming continues, the commercial salmon fishing industry is poised to expand northwards, but its success will largely depend on extenuating factors such as <a href="https://www.eenews.net/stories/1060023067" target="_blank">changes to marine habitat and food sources</a> and <a href="https://www.yukon-news.com/news/promising-chinook-salmon-run-failed-to-materialize-in-the-yukon-river-panel-hears/" target="_blank">how many fish are caught during the freshwater stages of their journey</a>.</p><p>Even with the potential for increased northern biodiversity, it is important to recognize that some northern communities may be unable to adapt or may <a href="https://thenarwhal.ca/searching-for-the-yukon-rivers-missing-chinook/" target="_blank">lose individual species that are associated with important cultural values</a>.</p>
- New England Fishing Communities Being Destroyed by 'Climate ... ›
- Shrimp Fishing Banned in Gulf of Maine Due to Ocean Warming ... ›
- Atlantic Salmon Is All But Extinct as a Genetically Eroded Version of ... ›
A heat wave that set in over the South and Southwest left much of the U.S. blanketed in record-breaking triple digit temperatures over the weekend. The widespread and intense heat wave will last for weeks, making the magnitude and duration of its heat impressive, according to The Washington Post.
- Hot Weather and COVID-19: Added Threats of Reopening States in ... ›
- 50 Million Americans Are Currently Living Under Some Type of Heat ... ›
- Second Major Heat Wave This Summer Smashes Records Across ... ›
By Joni Sweet
If you get a call from a number you don't recognize, don't hit decline — it might be a contact tracer calling to let you know that someone you've been near has tested positive for the coronavirus.
Interviews With Contact Tracers<p>Contact tracing is a public health strategy that involves identifying everyone who may have been in contact with a person who has the coronavirus. Contact tracers collect information and provide guidance to help contain the transmission of disease.</p><p>It's been used during outbreaks of sexually transmitted infections (STIs), Ebola, measles, and now the coronavirus that causes COVID-19.</p><p>It starts when the local department of health gets a report of a confirmed case of the coronavirus in its community and gives that person a call. The contact tracer usually provides information on how to isolate and when to get treatment, then tries to figure out who else the person may have exposed.</p><p>"We ask who they've been in contact with in the 48 hours prior to symptom onset, or 2 days before the date of their positive test if they don't have symptoms," said <a href="https://case.edu/medicine/healthintegration/people/heidi-gullett" target="_blank">Dr. Heidi Gullett</a>, associate director of the Center for Community Health Integration at the Case Western Reserve University School of Medicine and medical director of the Cuyahoga County Board of Health in Ohio.</p>
“You’ve Been Exposed”<p>After the case interview, contact tracers will get to work calling the folks who may have been exposed to the coronavirus by the person who tested positive.</p><p>"We give them recommendations about quarantining or isolating, getting tested, and what to do if they become sick. If they're not already sick, we still want them to self-quarantine so that they don't spread the disease to anyone else if they were to become sick," said Labus.</p><p>Generally, the contact tracer won't ask for additional contacts unless they happen to call someone who is sick or has a confirmed case of the virus. They will help ensure the contact has the resources they need to isolate themselves, if necessary. The contact tracer may continue to stay in touch with that person over the next 14 days.</p><p>"We follow the percentage of people that were contacts, then converted into being actual cases of the virus. It's an important marker to help us understand what kind of transmission happens in our community and how to control the virus," said Gullett.</p>
Why You Should Participate (and What Happens If You Don’t)<p>A <a href="https://www.thelancet.com/journals/laninf/article/PIIS1473-3099(20)30457-6/fulltext" target="_blank">Lancet study</a> from June 16, which looked at data from more than 40,000 people, found that COVID-19 transmission could be reduced by 64 percent through isolating those who have the coronavirus, quarantining their household, and contacting the people they may have exposed.</p><p>The combination strategy was significantly more effective than mass random testing or just isolating the sick person and members of their household.</p><p>However, contact tracing is only as effective as people's willingness to participate, and a small number of people who've contracted the coronavirus or were potentially exposed are reluctant to talk.</p><p>"Contact tracers have all been hung up on, cussed at, yelled at," said Gullet.</p><p>The hesitation to talk to contact tracers often stems from concerns over privacy — a serious issue in healthcare.</p>
- Anti-Racism Protests Are Not Driving Coronavirus Spikes, Data ... ›
- Cell Phone Tracking Analysis Shows Where Florida Springbreakers ... ›
NASA scientists say that warmer than average surface sea temperatures in the North Atlantic raise the concern for a more active hurricane season, as well as for wildfires in the Amazon thousands of miles away, according to Newsweek.
By Andrea Germanos
Oxfam International warned Thursday that up to 12,000 people could die each day by the end of the year as a result of hunger linked to the coronavirus pandemic—a daily death toll surpassing the daily mortality rate from Covid-19 itself.
- These 6 Men Have as Much Wealth as Half the World's Population ... ›
- Climate Change Forces 20 Million People to Flee Each Year, Oxfam ... ›
By Jun N. Aguirre
An oil spill on July 3 threatens a mangrove forest on the Philippine island of Guimaras, an area only just recovering from the country's largest spill in 2006.
- 15,000 Gallon Oil Spill Threatens River and Drinking Water in Native ... ›
- Mysterious Oil Spill on Massachusetts' Charles River Spurs Major ... ›
- Disastrous Russian Oil Spill Reaches Pristine Arctic Lake - EcoWatch ›