Vivienne Johns

[Vivienne Johns @johns_vivienne]

@Aunyua25 Dolphins are able to dive deeper than humans as well has continuously make dives without repeated surface intervals, while humans must take repeated surface intervals. This study goes into more detail on how dolphins dive #Bonato2019 #OCS4012
https://t.co/VoxscNb2Zj

[Vivienne Johns @johns_vivienne]

@NAMMCO_sec I am following you for @MarineVertClass as an expert in marine mammals #OCS4012

[Vivienne Johns @johns_vivienne]

@FrancineKershaw I am following you for @MarineVertClass as an expert in marine mammals #OCS4012

[Vivienne Johns @johns_vivienne]

@CCSPtown I am following you for @MarineVertClass as an expert in marine mammal conservation #OCS4012

[Vivienne Johns @johns_vivienne]

@ClareEmbling I am following you @MarineVertClass as an expert in marine mammal research #OCS4012

[Vivienne Johns @johns_vivienne]

@CoastalPaleo I am following you for @MarineVertClass as an expert in marine mammal paleontology #OCS4012

[Vivienne Johns @johns_vivienne]

@MarineLifeCtr I am following you for @MarineVertClass as an expert in marine mammal rehabilitation #OCS4012

[Vivienne Johns @johns_vivienne]

@UKIRSC_SMM I am following you for @MarineVertClass as an expert in marine mammals #OCS4012

[Vivienne Johns @johns_vivienne]

@jjkiszka I am following you for @MarineVertClass as an expert in marine mammals #OCS4012

[Vivienne Johns @johns_vivienne]

@MarineMammalCom I am following you for @MarineVertClass as an expert in marine mammal conservation #OCS4012

[Vivienne Johns @johns_vivienne]

@MarMamBdos I am following you for @MarineVertClass as an expert in marine mammals #OCS4012

[Vivienne Johns @johns_vivienne]

#Dislikes: Group 3 felt that #Bonato2019 used anatomical terminology without explaining it, and also had a dense and difficult to read methods section #OCS4012

[Vivienne Johns @johns_vivienne]

#Likes: Group 3 liked that #Bonato2019 was short and concise. They were very clear in their objectives and also related the circulatory system in dolphins to humans. #OCS4012

[Vivienne Johns @johns_vivienne]

#Significance: #Bonato2019 confirmed the structure of the retia mirabilia in bottlenose dolphins and found that its likely purpose is to oxygenate the blood to the brain during descent in dives #OCS4012

[Vivienne Johns @johns_vivienne]

@PitaloMallory The retia mirabilia is a vascular structure made up of a complex of veins or venous sinuses. The vascular supply comes from the spinal meningeal arteries. This study goes into detail on the retia in bottlenose dolphins #OCS4012 #Bonato2019
https://t.co/NyMFpsvshQ

[Vivienne Johns @johns_vivienne]

What reasons does #Bonato20219 give for bottlenose dolphins being the most studied member of the dolphin family? #OCS4012

[Vivienne Johns @johns_vivienne]

Climate change is the greatest threat to polar bear populations. Whiteman et al. looked at blood samples and found that bears who hunted on the retreating ice in the summer had greater protein loss than the bears that stayed on shore and scavenged #OCS4012
https://t.co/YRUBZa4nEu

[Vivienne Johns @johns_vivienne]

This study looked at the scat contents of polar bears in order to determine their foraging behaviors and found that polar bears forage to maximize intake and minimize energy by feeding on seals and vegetation which are high in protein and fat #OCS4012
https://t.co/PIr0RzdyCX

[Vivienne Johns @johns_vivienne]

Richardson (2009) studied the relationship between polar bears and their environment. Female's use the ice to hunt and store up enough fat during the spring that will sustain them through one of the longest known fasting periods during gestation #OCS4012
https://t.co/sOMoq7hW2f

[Vivienne Johns @johns_vivienne]

Polar bears have adaptations such as partially webbed paws and a streamlined body which allow them to live in a marine environment. Pagano et al. found that while they are strong swimmers, they like to swim close to the surface to conserve energy #OCS4012
https://t.co/TV0keVkEvH