#divedog

[dogsswimming]

Barney underwater #rummysbeachclub #coonhound . . . . . . . . . #underwaterdogs #underwaterdog #dogdive #divedog #underwaterswimming #underwaterswim #dogfitness #dogexercise #adventuredogs #adventuredog #highdrivedogs #highdrive #privatedogpool #swimming #dogpool #underwaterswimming #dogswimming #swimdog #swimmingdog #exercisedog #exerciseyourdog #doggym #bestexercise #gooddog #gooddoggo #goodboy (at Rummy's Beach Club) https://www.instagram.com/p/CVI2IeapNt4/?utm_medium=tumblr

[dirtyboatcharters]

Meet Domino. He’ll be our first mate on today’s afternoon lobster trip. Remember, just like an ugly waitress, he works for tips! #lobstercharter #divedog #dogs #dogsonboats #fishing #islamorada (at DIRTY BOAT)

[xtruss]

Struvite is a nuisance for wastewater treatment plants, as it can clog pipes and lines. But the crystal, which is high in phosphorous, nitrogen, and magnesium, makes an excellent slow-release fertilizer for seagrass. Photo by divedog/Shutterstock

Could Human Pee Be the Key to Saving Seagrass?

Treating wastewater creates struvite—a nutrient-rich crystal that might just be the key to bolstering struggling seagrass beds.

— By Jesse Kathan | July 6, 2022 | Hakai Magazine

Around the world, seagrass is in decline. But University of Florida biogeochemist Patrick Inglett and his colleagues have hit on an unexpected key to spurring the effectiveness of recovery efforts: crystallized human urine.

Around the world, ecologists are racing to protect failing seagrass ecosystems by replanting those that have been damaged or wiped out. But replanted seagrass meadows often grow slowly and struggle to survive, especially in the nutrient-poor sands of Florida where Inglett helms restoration projects. Seagrass-hungry wildlife like manatees and pinfish only make matters more difficult. These grazers’ big appetites can prevent seagrass from fully establishing. To compensate, seagrass restorers use synthetic fertilizers to jumpstart growth.

But the glut of nutrients a fertilizer brings yields its own problems: as fertilizer dissolves, it feeds algae that can shade growing seagrass. Then, when the algae have used up the nutrients, they die and decompose, robbing the water of oxygen that fledgling seagrass needs. But in a recent study, Inglett and his colleagues have shown that struvite, a compound formed from human wastewater, is an effective solution to this complex dilemma.

Struvite crystals form from wastewater sludge in low-oxygen environments. High in ammonium, magnesium, and phosphorus, the crystals are rich in nutrients and, importantly, slow to dissolve—slower even than synthetic slow-release fertilizer, says Inglett.

In their lab, Inglett and his team filled large aquariums with shoal grass, a common seagrass in the southern United States. Supplementing the seagrass’s growth with either struvite or synthetic fertilizer, the scientists found that after 60 days the tanks with struvite had about five times more seagrass shoots than those treated with fertilizer. Struvite-treated tanks also had fewer nutrients dissolved into the water, representing less pollution. After nine months, the seagrass grown with struvite was larger than its conventionally fertilized counterparts, even when the struvite was applied at a lower concentration.

The long-term benefits of a slow-release fertilizer may be even greater still, says Inglett. Unlike conventional fertilizers, which provide a single pulse of nutrients, struvite will continue to nourish seagrass over time.

Frank Shaughnessy, a marine ecologist emeritus at Humboldt State University in California who was not a part of the study, says struvite had a hugely positive effect on the seagrass. “It looks like a really great technique for that system.” He also notes, however, that struvite might not be helpful in the cloudier and more temperate environments of the northeast Pacific or Chesapeake Bay where, unlike in Florida, seagrass growth is limited by light rather than nutrients.

Inglett sees supply as the main limiting factor in the adoption of struvite as a fertilizer. Although struvite has long been a waste product, only recently have some water treatment plants begun purposefully extracting the crystal to sell as an organic fertilizer. In parts of Europe, recycling struvite is encouraged as a way to reduce wastewater pollution and to reduce agricultural dependence on mined phosphorus.

In most of the world, struvite “is not as available as it is in Europe,” Inglett says. “But eventually I’m assuming it could catch on.”

If it does, struvite could turn human waste into a fuel for reviving struggling ecosystems.

[cloudtales]

Promising COVID treatments could be growing under the sea – here's how to find them

Promising COVID treatments could be growing under the sea – here’s how to find them

Promising COVID treatments could be growing under the sea – here’s how to find them divedog/Shutterstock More than 18 months into the pandemic, we’re still hunting for effective antiviral treatments for COVID – medicines that target the coronavirus itself and stop it from developing in the body. So far we have only a handful of options. Remdesivir has been authorised for use, but the latest…

[realdreamx]

#Hot #Bing 'Oyster farm offshore from Notojima Island, Ishikawa prefecture, Japan (© divedog/Shutterstock) August 05, 2020 at 04:30AM'

[holo-the-wise-waifu]

Source | Divedog

[professoraevelyn]

Algas pardas

"

A classificação biológica usada por especialistas da área pode inserir algas pardas em dois diferentes filos, no filo Phaeophyta (feófitas), ou no filo Ocrophyta (ocrofitas). Contudo, estudos recentes indicam estes organismos no grupo dos cromalveolados, ou Chromalveolata, juntamente com as diatomáceas, crisófitas, xantofíceas e organismos antes relacionados como fungos, os oomicetos e alguns protozoários. E, ainda, este grande grupo se subdivide e as diatomáceas, crisófitas, xantofíceas, algas pardas e outros organismos podem ser inseridos no grupo estramenópilas.

Existem cerca de 1.500 espécies registradas de algas pardas, as quais habitam quase que predominantemente ambientes marinhos; aparecem fixas a costões rochosos, principalmente em regiões árticas. Porém, muitas aparecem em ambientes tropicais de águas claras. Há registros de algas bentônicas em profundidades de 20 a 30 metros. Uma peculiaridade são os kelps (veja fotos abaixo), formações extensas próximas a costões rochosos representados pelos gêneros Laminaria e Sargassum (mar de sargassos). Poucas espécies ocorrem em ambientes de água doce.

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Kelps, formações de algas pardas (feófitas). Foto: divedog / Shutterstock.com

 Algas pardas formam "floresta" submersa. Foto: divedog / Shutterstock.com

Morfologia e características gerais

A morfologia básica para as algas pardas é designada por talos, um corpo vegetativo que pode ser constituído desde filamentos simples ramificados até os mais complexos conhecidos como pseudoparenquimatosos, que se assemelham ao parênquima, encontrado em outros organismos. Por apresentarem grande diversidade, as algas pardas variam em tamanho, desde microscópicas até organismos que atinjam 60m de comprimento, como os kelps, onde a maioria é representada por um talo multicelular. Geralmente, estas algas são referidas por macroalgas devido à forma dos talos, o mesmo acontecendo com representantes de algas vermelhas e verdes. Alguns gametas são as únicas células com flagelos.

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As algas pardas podem apresentar um ou vários cloroplastos e os pigmentos fotossintéticos são clorofila do tipo a e c, que geralmente mascaram-se em presença dos carotenoides, com o principal deles, a fucoxantina, ocorrendo em grande quantidade e que confere a cor marrom-dourada, como em crisófitas e diatomáceas; a xantofila, outro carotenoide, confere a cor marrom-escura ou verde-oliva. A substância de reserva energética é a laminarina, um carboidrato armazenado em vacúolos no citoplasma.

A parede celular é constituída por polissacarídeos do tipo: celulose, alginato e galactanos, estes últimos são muito utilizados comercialmente pelo homem. Ainda com a parede celular, as algas pardas são as únicas que possuem plasmodesmos, microtúbulos que permitem a conexão entre uma célula e outra.

Ciclo de vida

Os tipos de reprodução são variados e dependendo da espécie em um ciclo de vida sexuado a fecundação pode ser: isogâmica, quando há fusão de gametas morfologicamente iguais; anisogâmica, quando os gametas se diferenciam morfologicamente e fisiologicamente e oogâmica, quando os gametas se diferenciam morfologicamente, onde um é maior e imóvel, enquanto que o outro é menor e flagelado. Contudo, a maior parte destes organismos possui alternância de gerações, onde há a presença de um esporófito, produtor de esporos e um gametófito, produtor de gametas. Dependendo da espécie, o ciclo de vida pode variar sendo isomórfico, quando o esporófito e o gametófito não se diferenciam morfologicamente; ou heteromórfico, quando é nítida a diferença entre o esporófito e o gametófito. Além disso, a meiose pode ser espórica, quando esporófito possui estrutura produtoras de esporos onde ocorre a divisão meiótica e os esporos formados se tornam haploides (n); ou a meiose pode ser gamética, quando o gametófito originam gametas após a divisão meiótica.

Importância ecológica

O alginato com a celulose fornece flexibilidade e resistência às algas, permitindo suportar o estresse mecânico impulsionado por correntes e ondas marítimas. Além de auxiliar contra dessecação, quando a maré está baixa.

Bibliografia recomendada:

http://tolweb.org/Eukaryotes/3 (consultado em julho de 2018)

http://tolweb.org/Stramenopiles/2380 (consultado em julho de 2018)

Bicudo, C.E.M. & Menezes, M. (orgs.) 2006. Gênero de Algas Continentais do Brasil (chave para identificação e descrições). Ed. Rima, 2ª. edição, São Carlos, SP. 502p.

Evert, R.F. & Eichhirn, S.E. 2014. Raven/ Biologia Vegetal. 8ª edição, Guanabara Koogan, Rio de Janeiro, pp.278-316

Judd, W.S., Campbell, C.S., Stevens, P.F. & Donoghue, M.J. 2009. Sistemática vegetal: um enfoque filogenético. Artmed, 3ª. edição, Porto Alegre, RS. 632p.

Lee, R.E. 2008. Phycology. 4ª edição, Cambridge University Press, New York. 561pp.

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[scubadivingcostarica]

#woofwednesday Learn together to Deco about the importance of marine conservation. #scubashopcostarica #divedog #oceansunlimited #itsadogslife #igdog — view on Instagram http://ift.tt/2uqePDZ

[hotteam-diving-club]

Pirate. Dive dog of our Club. His really big now! Пират уже совсем большой.. обожает море, за уши не вытащить из воды) #divedog #divingtrip #divingredsea #animals #dog #beach #lovely #discovery (at Tiran Island , Red Sea , Arab Republic of Egypt)

[gaycodemon]

buzz thoroughly enjoys his phantom of the opera cosplay.

[dogsswimming]

#houndmix Barn Barn #divingunderwater . . . . . . . #underwaterdogs #underwaterdog #dogdive #divedog #underwaterswimming #dogswimming #swimdog #swimmingdog #swimmingdogs #swimmingdogsofinstagram #rummysbeachclub #privatedogpool #houstondogowners #houstonheights #houstoncity #summerdogs #summerswim #houstondogs #houstondoglovers #houstondogcare #westuniversity #summerfun #dogvacation #dogvacations #dogtravel #dogtraveler (at Rummy's Beach Club) https://www.instagram.com/p/CPEnw0PpmcF/?utm_medium=tumblr

[doublecasts-archive]

YELLOW

Yellow: 7 facts about my childhood

1. According to my parents, I tried to fix every problem I came across. Even if it was in a country far far away that I had no control over I still wanted to help them and I’d get so fuckin’ upset that I couldn’t do anything.

2. I used to be terrified of tornadoes and I was worried that someone somewhere wanted to bomb my country and kill everyone I loved. 

3. My Grandpa and I would watch The Lion King every single time I went over to his house. That was pretty much my favorite part of visiting them ngl.

4. I was obsessed with rainbows. If I drew it, there was a rainbow on it. And also a sun with sunglasses. I was a fuckin Picasso up in this bitch.

5. When I was learning how to talk I spoke with a Boston accent for whatever reason.

6. When me and Ray were little we would RP and play Spyro the Dragon. We even had OC’s we would bring in to it. It was incredible. 

7. When I was little my older brother told me I was a terrible person because I got an onion ring in my fries at burger king. I cried.

Tl;dr, I was a big ol crybaby who really liked Spyro, Rainbows and The Lion King.

[cloudtales]

Promising COVID treatments could be growing under the sea – here's how to find them

Promising COVID treatments could be growing under the sea – here’s how to find them

divedog/Shutterstock More than 18 months into the pandemic, we’re still hunting for effective antiviral treatments for COVID – medicines that target the coronavirus itself and stop it from developing in the body. So far we have only a handful of options. Remdesivir has been authorised for use, but the latest research shows it doesn’t improve outcomes for COVID patients, and so the World Health…

[ragtimelimes-art]

For an art trade with Divedog. Drew our hammerbros Bombay and Sid uvu  Bombay is too cute <3<3<3 and Sid is a bad influence

[zebeck]

tumblr suggested i follow you as well, but back when you were zebeck. i don't regret following for an instant. caliborn all over the place is pretty sweet.

heheheheheh why thank you!!!! yes caliborn calliope and dirk are p much my life now yep

[nintendonut1]

divedog replied to your post: lol i wonder how much an apartment in centralia...

pretty sure centralia’s been evacuated for years now. there are only a few people who chose to stay in their houses and will probably die because of the terrible air from the fires or the ground caving in as it’s done before more than once.

lol i know that was the joke dude

i know all about centralia, fuckin fascinating

two best friends play taught me! c: