Discover and read the best of Twitter Threads about #sesh1
Most recents (5)
I’ve been privileged to work with #CitizenScience data in #ornithology for many years at @_BTO and @CornellBirds. I’ve seen some of the amazing opportunities and the tricky challenges that come with citizen science data.
1/15 #BOUasm22 #Sesh1
1/15 #BOUasm22 #Sesh1
#Ornithology has a long history of #CitizenScience, enabling us to calculate population status for birds over many decades. For example, @_BTO’s data for Herons goes back to 1928!
2/15 #BOUasm22 #Sesh1
2/15 #BOUasm22 #Sesh1
One of the most important #CitizenScience projects in the UK, the Breeding Bird Survey @BBS_birds has allowed us to monitor which bird populations are decreasing and increasing over time.
3/15 #BOUasm22 #Sesh1
3/15 #BOUasm22 #Sesh1
1 #BOUsci21 #Sesh1 // If you’ve read somewhere that UK bird species are increasing or decreasing, chances are that information has come from the UK Breeding Bird Survey. @BBS_birds is run by BTO in partnership with JNCC and RSPB. #BTOscience
2 #BOUsci21 #Sesh1 // Since 1994, a loyal team of skilled volunteers has surveyed a stratified random sample that has grown to >4000 1-km squares. Twice each spring, they count birds along transects and assign them to distance bands to assess detectability #BTOscience
3 #BOUsci21 #Sesh1 // From these data we produce population trends for around 50% of UK breeding bird species. These account for over 95% of all individual birds in the UK, so BBS tells us a lot about our bird populations: bto.org/bbs-results #BTOscience
1/6 #UEACEEC21 #Sesh1
Salmon usually return to their natal streams to spawn, presenting a risk of breeding between close genetic relatives.
By reducing heterozygosity, #inbreeding can deplete the genetic variability of a population, affecting offspring fitness and survival
Salmon usually return to their natal streams to spawn, presenting a risk of breeding between close genetic relatives.
By reducing heterozygosity, #inbreeding can deplete the genetic variability of a population, affecting offspring fitness and survival
2/6 #UEACEEC21 #Sesh1
However, #salmons are externally fertilisers and females are polyandrous. So how do females control #fertilisation when this occurs outside of their bodies?
Can they somehow hamper fertilisation from their siblings?#evolution may have allowed such mechanisms
However, #salmons are externally fertilisers and females are polyandrous. So how do females control #fertilisation when this occurs outside of their bodies?
Can they somehow hamper fertilisation from their siblings?#evolution may have allowed such mechanisms
3/6 #UEACEEC21 #Sesh1
To test this, we analysed #spermmotility in sibling vs non-sibling ovarian fluid, a substance released with eggs and involved in #sexualselection in #fish. Then, we compared #fertility & hatch rates between sib vs non-sib crosses after #invitro fertilisation
To test this, we analysed #spermmotility in sibling vs non-sibling ovarian fluid, a substance released with eggs and involved in #sexualselection in #fish. Then, we compared #fertility & hatch rates between sib vs non-sib crosses after #invitro fertilisation
1 #ISTC20 #Sesh1 #ornithology Hello everyone. Thanks for the organizer of ISTC and Ryan. You can find my detailed information at researchgate.net/profile/Zhijun…. It’s my great honor to share the study of my team on shorebirds and their habitats in the Yellow Sea in China.
