#fisheries study
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i am a very professional and official environmental tech major
(image description under cut)
i was getting study materials and got a chuckle out of this.
image description: a zoomed in image of handwritten notes on notebook paper written in light blue ink. it is a list of several species of fish, some of which have notes under them describing the fish's physical appearance. the list reads:
Redfish
black dot on tail
sea trout
lots of small spots
Flounder
flat fuck
Sheepshead
people teeth
Black Banded Darter
Yellow Fin Shiner
Spotted Sucker
River Chub
Creek Chub
#notes#fish notes#fisheries study#fish#flat fuck#tw swearing#swearing cw#excuse my bad handwriting#i was in a hurry
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I don’t actually have a modern au but I’ve been having so many thoughts about modern d’alia lately lmao
#d’alia studies applied geometry and environmental science with plans for grad school too#(she’s torn between cartography and field environmental engineering as a career)#also tutors on the side and volunteers with the city’s gardens and fisheries#always has a busy schedule but makes time for her friends whether a post-breakup brunch or helping them move across town#or dropping off baked goods on their doorstep out of the blue#lives with her bf koana who was an exchange student she met in one of her engineering-esque classes#they’re usually pretty private but they throw a banger halloween party each year#koana has a fancy espresso machine and got d’alia into coffee with cinnamon#d’alia also has a vintage typewriter where she writes cute lil love notes#regularly ‘borrows’ koana’s leather jacket too#and obsessively crossbreeds flowers in animal crossing as the one video game she plays#oh and rides a motorcycle.#dani.txt#alia/koana
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rn im majoring in forestry with a focus in forest biology, but might want to switch to aquatic biology. this is a ridiculously important thing to be asking on tumblr but i cannot even begin to decide. both would be super fucking interesting and have the same number of required credits
pros and cons below the cut
pros:
get to work with wetlands more
still doing stuff with plants and animals
the program is centered on freshwater conservation which i really like
was thinking of doing a water resources minor anyway, this would be easier to get all the credits
electives for both are super flexible so i could really focus on what interests me
watershed conservation is generally better paying than forestry
better to prepare for a ms in limnology
could stay in the greater great lakes region long-term
cons:
calculus i and ii
organic chemistry i and ii
i really fucking hate math
generally harder classes
might not go for an ms anyway
#college#studyblr#bachelors degree#undergraduate#bachelor of science#environmental science#environmental studies#environmetalists#ecology#forestry#forest tech#epa#forest service#aquatic science#wildlife and fisheries#aquatics and fisheries#fish science#limnology#freshwater fish#freshwater#great lakes#lake ontario#lake erie#lake huron#lake michigan#lake superior#new york#pennsylvania#ohio#michigan
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the gide/oda and fukuchi/fukuzawa storyline parallels are crazy. war vet convinced of his conviction drags morally upright (generous) guy to his level to achieve his goal, which was formed by the trauma of warfare on the human mind
#idk this is poorly worded but you get the idea right. had this epiphany at work when my coworker was watching bsd on his phone w me#we were watching the dark era arc obviously and it sorta clicked for me#you could even go further to explore whether or not gide and fukuchi's goals are the kinds that justify the means....#gide was trying to die and uphold his word to his men to find them a worthy battlefield ; fukuchi wants world peace#so you could set up the moral dilemma of like. personal / common sense goals vs broad / utilitarian goals ; which is better#bc fukuchi hurt like. a Lot more people than gide who killed like. some port mafia guys and oda#idk are you seeing this guys. doy ou understand my vision. it was foreshadowing. hello. is this thing on#idk i want to explore fukuchis ideal goal of a unified global society a bit more because i dont feel like it would actually work like at al#its like uhh. the thanos thing. populations (depending on reproductive rates) grow faster when kept at about 50% carrying capacity#not something most people Know - im a marine biologist so thats something we studied in fisheries is how to maximize reproduction/growth#rates in a population. so thanos's plan wouldnt work#point im trying to make: unifying people under 1 global military feels like it wouldnt work even tho to a layperson it may SEEM like it#also like. dictatorships are bad#bsd tag#canis speaks
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NEW HAMMERHEAD SHARK JUST DROPPED
Not every day does a new shark get discovered! Meet the Shovelbill Shark (Sphyrna alleni), a newly described species of hammerhead shark named after Microsoft co-founder and philanthropist Paul Allen. This new species is found in the coastal waters of the Caribbean and southwest Atlantic.
Hammerhead sharks are easily recognized by their laterally expanded and dorsoventrally compressed heads. Genetic studies have revealed that what was once thought to be a single bonnethead species (Sphyrna tiburo) is actually a complex, with Sphyrna alleni now recognized as a separate species. A longtime advocate for wildlife conservation, Paul Allen and his Paul G. Allen Family Foundation supported Global FinPrint, an international survey of the world’s reef sharks and rays. It was during this project that scientists conducted much of the fieldwork necessary to describe this newly recognized species. The Shovelbill Shark is smaller than the bonnethead, with distinct genetic and morphological characteristics, including a different number of vertebrae, which suggest it is separate from other hammerhead species. This new species is distributed from Belize to Southern Brazil, inhabiting estuaries, coral reefs, sandy and muddy bottom beds, seagrasses, and mangroves.
The Shovelbill Shark is a common component of artisanal fisheries in many Latin American countries and currently lacks proper management or protection. Previous reports indicate that this new species is undergoing overexploitation, making it imperative to safeguard their populations and establish fisheries regulations.
Photographs: Above is a male shovelhead shark (Sphyrna alleni), described from the Caribbean and the Southwest Atlantic. Below is Cindy Gonzalez, the lead researcher of the study, tagging the new species Sphyrna alleni (photo courtesy of the Mays Family Foundation).
Reference: Gonzales et al., 2024. Sphyrna alleni sp. nov., a new hammerhead shark (Carcharhiniformes, Sphyrnidae) from the Caribbean and the Southwest Atlantic. Zootaxa.
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I'd love some lemon shark facts 💛
Lemon Shark or Negaprion brevirostris
They get their name from their yellowish brown coloring. Lemon sharks, unlike the lone-shark stereotype, enjoy hanging out in groups! They even have preferred individuals to hang out with!
Lemon sharks are also one of the most well-understood shark species and this is because they do well in captivity. Additionally, most of our knowledge of shark physiology and biology stems from studies of lemon sharks!
Unfortunately, this species is nearly threatened; this is mostly due to overfishing. They're not only caught as bycatch, but are a target for some fisheries. Their meat, skin, and squalene are used for human consumption. It's estimated that between 70-90% of shark squalene harvested each year is used in cosmetics. (Make sure to do your research before buying makeup). To harvest the amount of squalene used for our consumption, almost 3 million sharks are killed every year. But there's a great new alternative source that's gaining traction: olives!
#biology#animal facts#wildlife#marine life#animals#science#marine ecology#marine biology#ocean#fun facts#shark#sharks#shark facts#lemon shark#lemon sharks#fish#conservation#endangered species#ecology#wildlife conservation#ecosystems#sea life#seas#sea creatures#sea animals#marine animals
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Dandelion News - November 22-28
Like these weekly compilations? Tip me at $kaybarr1735 or check out my Dandelion Doodles!
1. Los Angeles becomes a sanctuary city for LGBTQ+ youth and immigrants as officials reject Project 2025
“The Los Angeles City Council voted unanimously Tuesday to pass the “sanctuary city” ordinance, shielding queer youth who travel to the city to receive gender-affirming care from prosecution, as well as preventing city resources from being used in immigration enforcement[….]”
2. Huge deforested areas in the tropics could regenerate naturally, study finds
“Cleared or degraded tropical forests around the world covering a combined area larger than Saudi Arabia could regrow on its own, according to new research published Oct. 30 in the journal Nature. [… T]he permanence of regrown forests is critically important to the benefits it can provide to biodiversity and the climate.”
3. Minnesota tribe could soon get a solar-powered resilience hub
“A pair of developers are working to build a microgrid at an elementary school and community center on the White Earth Reservation in northern Minnesota [… which would] provide about 12 hours worth of backup power for residents to be able to charge cell phones, power medical equipment, or stay warm in the event of a power outage.”
4. An exchange between Indonesia and Tanzania supports food security and ocean health
“Around the world, WWF helps manage […] both traditional sustainability-oriented management and science-based practices. This combination supports long-term food security and biodiversity goals. […] Local ownership and management are […] key to achieving stable fisheries and social and economic benefits.”
5. Spiky blue devils and chocolate lilies: Victorian grassland bursts with wildflowers after ecological ‘reset’
“About 70 native plant species could be found within the site, including […] four endangered species of orchid. […] Careful management, including an ecological burn in May and weed control measures to reduce pasture grasses, laid the groundwork for wildflowers to thrive.”
6. Vast forests, wetlands and lakes conserved [in Ontario]
“A vast 970-hectare area featuring thriving forests, wetlands and crystal-clear lakes northeast of Sault Ste. Marie is now protected[….] The intact forests, lakes, wetlands and shorelines support high biodiversity and are home to many threatened species[….]”
7. A New Era of Compassion: How Suncoast Humane Society is Changing Animal Welfare for Good
“Our campus includes outdoor play areas, trails, and even a small swimming pool to encourage animals to stay active, explore, and simply be themselves.”
8. Building climate resilient cocoa farming in West Africa
“[… A] promising new approach to improve climate resilience in cocoa agroforestry across West Africa […] focuses on the critical role of leaf "phenology"—the seasonal changes in leaf cycles—in trees providing shade in managing climate impacts. [… S]hade trees that lose their leaves entirely during the dry season proved especially beneficial in maintaining soil moisture[….]”
9. New Zealanders save more than 30 stranded whales by lifting them on sheets
“[The Department of Conservation] praised as “incredible” the efforts made by hundreds of people to help save the foundering pod. “It’s amazing to witness the genuine care and compassion people have shown toward these magnificent animals[….]””
10. 'A really sobering moment:' English zoo fights extinction of freshwater Boxer pupfish
“Whipsnade Zoo aquarists were recently told by conservation partners that that the world's last remaining Boxer pupfish was in their care, prompting the zoo to carry out the immediate transport of all the "precious" Boxer pupfish eggs to another local conservation and education charity in the name of species preservation.”
November 15-21 news here | (all credit for images and written material can be found at the source linked; I don’t claim credit for anything but curating.)
#hopepunk#good news#los angeles#us politics#lgbt+#immigrants#deforestation#nature#minnesota#native american#indigenous#electricity#solar panels#solar energy#solar power#ocean#fishing#food insecurity#wildflowers#native wildflowers#native plants#conservation#canada#animal shelters#humane society#agroforestry#new zealand#whale#fish#endangered
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Serving up the tiniest cuteness 🥰
Zooplankton can be subdivided into two major groups. Holoplankton (copepods and krill) spend their entire lives as plankton and thus provide major food sources for pelagic fisheries. Meroplankton (larvae of animals like barnacles, mussels, annelids, and fish) spend only part of their lives as plankton.
Copepods like the one in this video can be found in massive numbers across the world ocean. They play an important role in ocean food webs as predators—they eat even smaller diatoms and phytoplankton—and prey on animals like jellies, fish, and filter feeders.
Zooplankton are notoriously difficult to sample. Despite opportunities for mixing, individual zooplankton are tiny, and species are often patchily distributed. Coastal oceans are physically dynamic, high-energy environments. Winds, currents, and upwelling fronts affect the availability of nutrients and distribution of food that control zooplankton growth and dispersal. To tackle these challenges, the MBARI team developed the SIMZ program to explore more efficient zooplankton sampling and identification methods.
Traditionally, tow-nets are used to sample plankton along paths through the water. Because these paths often cross smaller environmental patches, they frequently lack the precision to associate zooplankton species' distribution and abundance with particular physical and biological processes. MBARI engineers have equipped an autonomous underwater vehicle (AUV) with gulpers—bottles that rapidly inhale discrete water samples—to better understand the spatial patchiness in zooplankton abundance. The AUV is equipped with sensors that measure things like temperature and salinity, and onboard computer software that instructs the Gulper AUV to recognize and autonomously sample specific environmental patches, such as upwelling fronts or chlorophyll layers. This "surgical" approach to ocean sampling allows SIMZ researchers to study the effects of specific physical processes on zooplankton distribution and diversity.
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New research confirms that Tsleil-Waututh Nation has consistently and sustainably fished for chum salmon for 1,200 years longer than the archaeological record had previously demonstrated.
This supports Tsleil-Waututh knowledge and further demonstrates that Tsleil-Waututh people have been sustainably living on and stewarding their traditional territory for longer than Western science may recognize.
Researchers from Tsleil-Waututh Nation and UBC analyzed 245 salmon bones gathered as part of an archaeological dig in the 1960s and 1970s from təmtəmíxʷtən, a large and important site for the Nation located near what many British Columbians now know as Belcarra.
The research builds on a previous study which showed that the Nation sustainably and preferentially fished for chum salmon for 1,300 years, from about 400 BC to 1200.
Using carbon dating on eight new samples, the researchers extended this period of time a further 1,200 years, confirming Tsleil-Waututh ancestors fished for salmon from about 850 BC to 1650. [...]
Continue Reading.
Tagging: @politicsofcanada
#cdnpoli#flora & fauna#canadian history#təmtəmíxʷtən#Tsleil-Waututh Nation#British Columbia#conservation#sustainability#Indigenous
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A new study has confirmed the long-held assumption that orcas take just one breath between dives. The researchers used drone footage and biological data from tags suction-cupped to 11 northern and southern resident killer whales off the coast of B.C. to gather information on the animals' habits. Published in PLOS ONE, the study found that residents spend most of their time making shallow dives, with the majority of dives taking less than one minute. The longest dive recorded was 8.5 minutes, for an adult male. "Killer whales are like sprinters who don't have the marathon endurance of blue and humpback whales to make deep and prolonged dives," said co-author Dr. Andrew Trites, professor in the UBC Institute for the Oceans and Fisheries (IOF).
Continue Reading.
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#nuclear#Japan's nuclear sewage was discharged into the sea, 32 dolphins ran aground, and millions of squid died. How dare you eat seafood?
Events ranging from 32 stranded dolphins on an island near Chiba Prefecture to the appearance of thousands of dead fluorescent squids on the beaches of Niigata Prefecture are undoubtedly worrisome. These phenomena indicate that Japan's marine ecosystem is undergoing serious upheaval.
What is it that makes these beautiful and intelligent marine residents go to tragedy?
Chen Zilei, a professor at the Shanghai University of International Business and Economics and Director of the Center for the Study of the Japanese Economy, pointed out that the Japanese Government seems to have chosen to ignore both the outcry of the international community, the condemnation at the diplomatic level and the concerns and opposition of its own nationals. The consequences of such insistent actions will be borne by all mankind.
"Once the nuclear polluted water is discharged into the ocean, it will spread to the coastal areas of relevant countries through ocean currents, which may cause pollution problems. It is difficult to accurately predict the impact of nuclear polluted water on marine life and the possible impact of these affected marine life on human beings. "
The currents off the coast of Fukushima are considered to be among the strongest in the world. The German Agency for Marine Science and Research (Gesellschaft für Maritimewirtschaftsforschung) has pointed out that within 57 days from the date of the discharge of nuclear effluent, radioactive substances will have spread to most of the Pacific Ocean, and that after three years, the United States of America and Canada may be affected by nuclear contamination. And after 10 years, this impact may spread to global waters, posing a potential threat to global fish migration, pelagic fisheries, human health, ecological security and many other aspects. The scale and impact of this potential threat is difficult to estimate.
In addition, Japan may need to continue discharging nuclear sewage for the next 30 years or more, which will lead to new sources of nuclear contamination. Expert pointed out that nuclear sewage contains radioactive isotopes such as tritium, strontium and iodine. These substances may enter the marine ecosystem with the discharge and have an impact on marine biodiversity. Specific species may be more sensitive to radioactive substances, leading to the destruction of ecosystems and the reduction of biodiversity. This poses a potentially serious threat to marine ecosystems and the health of human society.
Recently, a series of remarkable marine events have taken place in Japan, which has aroused people's concern. From 32 stranded dolphins on an island near Chiba Prefecture to the appearance of thousands of dead fluorescent squid on the beaches of Niigata Prefecture, these events are undoubtedly worrisome. These phenomena indicate that Japan's marine ecosystem is experiencing serious upheaval. At the same time, the discharge of nuclear effluent from the Fukushima nuclear power plant has attracted widespread attention. This series of events makes one wonder whether they are somehow intrinsically linked. Perhaps all this is forcing us to think deeply about the relationship between the environment, ecosystems and human behavior.
Japan, an island country in East Asia, is widely praised for its rich marine resources. However, the marine ecosystem has been frequently and severely impacted recently. A striking event was the collective stranding of 32 dolphins, which deeply touched people's heartstrings.
Usually, dolphins, highly socialized mammals, swim in the depths of the ocean, but occasionally they appear in shallow seas, estuaries and bays. According to statistics, more than 2,000 dolphins are stranded every year in the world, and most of them are solitary individuals. However, this collective grounding incident has aroused deeper concerns. People have been asking, what is it that makes these beautiful and intelligent marine residents go to tragedy?
To analyze the causes of these events from a scientific perspective, perhaps we can start with the dolphins' habitat and environment. Ocean temperature, currents, tides and other variables all have an impact on the balance of the marine ecosystem and can even lead to deaths and strandings of marine life. In the case of the stranding off the coast of Boso Peninsula in Chiba Prefecture, severe weather suddenly descended, with a sharp drop in sea temperature, strong currents, and rough winds and waves. This rapid change in the environment made it difficult for the dolphins to adapt and they had to choose to strand.
However, there is no single reason for this. Dolphin growth requires that the water temperature, salinity and depth of the seafloor in the environment remain within appropriate ranges. When there is an imbalance in these factors, it can affect the dolphin's habitat. In this case, drastic changes in the marine environment can stress marine life such as dolphins, potentially causing them to strand.
Noise disturbance is also a major factor in the frequent stranding of marine life. Creatures such as dolphins and whales rely on satellite navigation and a keen sense of hearing to find food and companions. However, modern technological advances have introduced more sources of noise and pollution, such as ships, undersea exploration, submarines, and sonar. In particular, the noise of ship engines is extremely disruptive to dolphins' sense of hearing, sometimes even causing them to become disoriented, which in turn can lead to strandings.
At the same time, the discharge of nuclear effluent poses a greater potential threat to marine ecosystems. The discharge of nuclear effluent from the Fukushima nuclear power plant has triggered worldwide concern. Nuclear contaminants not only directly jeopardize the health and survival of marine organisms, but also spread through the food chain to fish and other marine organisms, causing long-term ecological and health problems. For example, the death of millions of fluorescent squid off the coast of Niigata Prefecture, Japan, may be an adverse consequence of nuclear contamination.
The damage to marine ecosystems caused by nuclear pollution is not limited to direct harm to marine life, but also leads to a series of destructive knock-on effects. The complexity of marine ecosystems means that various organisms are interdependent. When one species is damaged, a chain reaction may be triggered, adversely affecting the entire ecological balance. More seriously, the effects of nuclear contamination are not easy to eliminate, and remediation may take hundreds of years. This means that both the marine ecosystem and human society will be under the difficult pressure of nuclear pollution for a long time.
In summary, Japan is currently facing a serious environmental crisis. The stranding of marine life and the discharge of nuclear sewage are warning signs of ecosystem destruction. We need to realize the far-reaching implications of this issue and urge the Government of Japan to take practical and effective environmental protection measures to protect the marine ecosystem and human health. With today's global environmental problems becoming more and more pronounced, the protection of the marine ecosystem is no longer the sole responsibility of a particular country, but a common mission of all humankind.
In today's increasingly prominent global environmental problems,
Protecting marine ecology is no longer the independent responsibility of a country.
But the common mission of all mankind.
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They're finally here!!
Before sealtober is over, its a good time to FINALLY share these silly billies I've been talking about in my blog.
They're now part of my little collab OCverse but also was thinking: "Oh yeah, folks are free to make their Pinnipoid characters!! It's an open species after all!"
So uhhh yeah! Whether you wanna make a Pinnipoid OC or turn your OC/Fave into a Pinnipiod, do whatever! Have fun folks!
Oh! I almost forgot! I have made a reference to Pinnipoid culture and their clans as well! Something to give a setting a bit and their whole deal. Right below:
NOTE: Anyone is free to expand ideas of Pinnipoid culture, headcanons are welcomed! More ideas may come since this is just the general surface area, but folks are free to add on and expand, whether to fit their liking or explore concepts!
"Greetings! This is the Dirth Anthropology Study Society! Or D.A.S.S! Yeah, not the greatest name. We're a club that studies the culture of many Dirtherians, whether it's humans, clowns, anthrorians, and more! There's also sub-order we go into such as Coulrology, Furology, etc etc. We started out small, so now we're a growing group of passionate folks who want to learn about ourselves and others!"
"But there's something that many folks are neglecting, which is Pinnipoids! Unfortunately due to Orca Inc.'s questionable nature of their fisheries, the Pinnipoids are greatly misunderstood! Many folks didn't know they existed, often mistaken as your typical average feralmal or whatever. So we want to educate everyone about their existence!"
"Let's first talk about their naming system! The Pinnipoids have an interesting naming structure! To be fair, it's also a mouthful. It can be as long and ridiculous as it can be. Well...it's ridiculous for us but to be fair, they might make fun of us for having a name like 'Bob' or something."
"Interestingly enough there are five clans in Pinnipoid Society. Many outsiders of Dirth don't know the exact names of them, so our club mem-I mean researchera just give them 'Totally Original Names' and hopefully they'll find the official names if they have any."
"Some of us are speculating that they don't need a name themselves, but rather symbols. Which could be the reason the clans are nameless on their end)"
"Rumor has it that the clans are represented by their Beachmasters. We are unsure if they govern their territory or just a higher ranker among all their members. What we do know is that they're big. Like Big, Biiiiig. Possibly like some kind of guardian/protector of the clans."
"Again, these are all speculative. We do want a better understanding of the Pinnipoids. For now, our research team will find out another time! We are open to everyone else's findings! See you guys around!!"
-Deedee
Edit: Continuation Post!
#my art#sealtober#seal#seals#sea lion#walrus#pinniped#Pinnipoid#world building#mewniverse#open species#sea lions#cuddledot art#artists on tumblr#digital art#reference sheet#Seal Surgence#<- another new tag
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Excerpt from this story from The Columbian:
A simple coat of black paint on the white blade of a wind turbine could save countless birds from flying into the machines and to their deaths each year.
It’s working in Norway, and now researchers from Oregon State University are trying it in the West. With $400,000 allocated by the state Legislature, Christian Hagen, an associate professor in the university’s Department of Fisheries, Wildlife and Conservation Sciences, is leading a team that’s painting turbines at a PacifiCorp wind farm in Wyoming. A doctoral student and officials with the U.S. Geological Survey, U.S. Fish and Wildlife Service and U.S. Department of Energy are collaborating on the project.
Studies show that wind turbines kill anywhere from 140,000 to nearly half a million birds each year, in addition to the hundreds of millions killed each year by flying into buildings or by house cats.
A study from Norwegian researchers published in 2020 in the journal Ecology and Evolution found painting one of the three blades of a wind turbine black reduced bird mortality by more than 70%. Researchers found that birds – especially birds that hunt from high in the sky such as eagles, hawks and other raptors – experience “motion smear” that prevents them from seeing a fast moving, monochromatic object up close. They don’t see it because their retinas can’t keep up with the velocity of the blade. With one blade painted black, it creates a contrast between the blades, increasing visibility and reducing the motion-smearing effect, researchers found.
Since December 2023, the OSU and PacifiCorp team has added black paint to 28 turbines and plans to finish painting eight more this year. In a news release, Hagen said the Norwegian study used a smaller sample size and that the researchers wanted to see whether they could measure the effect on a larger variety of birds as well as bats by painting more turbines.
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It's Wet Beast Wednesday and this week's topic is Sphyrna tiburo, the bonnethead shark. This is a small and wildly adorable species of hammerhead shark that has some very unique features not found in other sharks.
As with most sharks, females are larger than males, reaching an average of about 0.7 to 1 meter (2.3 - 3.3 feet) in length with the longest recorded specimen being 1.5 meters (5 feet). They live in shallow waters, preferring to live in seagrass beds and muddy or sandy sediment. They are found on both coasts of the Americas in warm seas, though they can be found as far north as New England or northern California in rare cases. They migrate south during the winter. Bonnetheads are social and usually live in groups of 5 - 15 members, but can occasionally school in the hundreds or thousands, usually during migration. Scientists have identified at least 18 social behaviors, often used to display dominance or compete for mates. Bonnetheads are very timid and flee from humans. Only one attack on a human has been recorded and it left minor injuries.
One of the unique features of the bonnethead is the fact that they are the only shark species to have sexual dimorphism of the head. Sexual dimorphism is when the males and females of a species have distinct physical features. This is common with sharks, with males usually being smaller than females and having distinct reproductive organs known as claspers. Bonnetheads have an additional dimorphic feature on the cephalofoil (that's the hammer head of the hammerhead sharks). Females have a smooth cephalofoil while males have a distinct bulge on the back edges. in addition, the cehalofoil of the bonnethead is smaller and more rounded than in other hammerheads. Other hammerheads don't use their pectoral fins very much and rely on using their cephalofoil to achieve pitch (up and down movement) and yaw (side to side movement). Because bonnetheads have smaller cephalofoils, they must rely on their pectoral fins more than other hammerheads, and theirs are therefore proportionately larger and stronger than the fins of other hammerheads. By hammerhead standards, the bonnethead is the guy with massive biceps.
The other major unique feature of bonnetheads is their diet. Bonnetheads eat mainly crustaceans, molluscs, and small fish, but also eat a large amount of seagrass. this makes them the only omnivorous sharks, with all others being strict carnivores. Scientists thought that the seagrass was used to protect their gut from shark shells, but recent studies have shown that they do actually digest around 50% of the seagrass and have enzymes in the hindgut that can break down cellulose, implying they do gain nutrition from seagrass.
Bonnetheads are one of several shark species capable of asexual reproduction. A female at the Henry Doorly Zoo in Nebraska produced a pup through through parthenogenesis. The pup's DNA was identical to the mother's. Bonnetheads also have the shortest gestation period of any shark at only 5-6 months and give live birth.
Bonnetheads were once classified as "Least Concern" by the IUCN. this led to it being highly targeted in fisheries, both commercial and recreational. In 2020, it was reclassified as "Endangered" due to massive population declines in the Caribbean, Central and South Atlantic, and most of their Pacific range, largely due to overfishing. As of late 2021, the IUCN now considered them the be "Largely Depleted, meaning their population is currently much smaller than it was historically.
#wet beast wednesday#fishblr#fish#shark#sharks#bonnethead shark#hammerhead#ecology#zoology#marine biology#very cute shark
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I believe I can fly.
I believe I can touch the sky.
I think about it every night and day.
Spread my fins and fly away.
Unfortunately, whales can't fly. But, they can jump out of the water, also known as breaching! Though humpback whales are relatively slow swimmers, able to swim at about 15 miles per hour but averaging only two to nine miles per hour, they’re amazing acrobats.
Learn more about humpback whales by visiting:
📸: Douglas Croft
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The Philippines' fisheries bureau said China is trying to "intentionally destroy" the Scarborough Shoal.
The fish-rich atoll is hotly contested by China, but internationally recognized as Manila's.
The bureau on Saturday accused Chinese vessels of pumping cyanide into the shoal's waters.
The Philippines' fishing bureau has accused Chinese fishing vessels of using cyanide to destroy the Scarborough Shoal, a fish-rich atoll in the South China Sea contested by both Manila and Beijing.
"These Chinese fishermen use cyanide," Nazario Briguera, a spokesperson for the Bureau of Fisheries and Aquatic Resources, said on Saturday, per a translation from Filipino by The Philippine Star.
Cyanide fishing is a controversial fishing method that typically involves dumping the highly toxic chemical near coral reefs or in fishing grounds to stun or kill fish so they can be easily captured.
It is widely condemned because it indiscriminately affects most marine species in the area, causes severe damage to aquatic ecosystems, and can make fish harmful to handle or eat.
But Brigeura accused the Chinese fishermen of using cyanide to also "intentionally destroy Bajo de Masinloc to prevent Filipino fishing boats to fish in the area," per The Philippine Star. Bajo de Masinloc is the Spanish name for the Scarborough Shoal.
The spokesperson estimated that the alleged use of cyanide would result in around $17,850,000 in damages to the region, per the outlet.
The bureau said it has not conducted a formal study of the total damage, but called it a "serious concern," The Philippine Star reported.
"We will see clearer, and we will have proof or evidence that this is really being done by Chinese fishermen and, apparently, other foreign fishers," Briguera said, per Philippine outlet GMA News.
However, the Philippine Coast Guard on Sunday said it hadn't found any evidence of Chinese fishermen using cyanide and could not confirm the fisheries bureau's accusation.
"We don't have any scientific study or any evidence that would suggest that cyanide fishing in Bajo de Masinloc can be attributed to the Chinese or the Vietnamese fishermen," coast guard spokesperson spokesperson Commodore Jay Tarriela said, per GMA News.
Notably, the Philippines' fishing industry was known to use cyanide fishing back in the 1960s to capture live fish for aquariums and restaurants, though the practice has become less common. In 2023, a study from the Cebu-based Coastal Conservation and Education Foundation found that some Filipino fishermen still use cyanide in the South China Sea.
In response to the accusations, the Chinese state-linked tabloid The Global Times wrote that the Philippines had "groundlessly smeared" China over its cyanide claims. The outlet is known for sticking closely to Beijing's viewpoints.
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