Lockwood: fossil oysters are larger than oysters from both colonial and modern times (Kusnerick et al 2018). The larger sizes are completely missing now, and because larger oysters are female that has potentially significant impact on reproductive output #RSfossil
February 19, 2025 at 1:01 AM
Lockwood: fossil oysters are larger than oysters from both colonial and modern times (Kusnerick et al 2018). The larger sizes are completely missing now, and because larger oysters are female that has potentially significant impact on reproductive output #RSfossil
Dalén:moving to second paradigm (small pop size), wants o know how are small pops affected by genetic processes. Wholly mammoth had huge range, that was reduced to small islands towards end of its existence #RSfossil
February 19, 2025 at 12:56 AM
Dalén:moving to second paradigm (small pop size), wants o know how are small pops affected by genetic processes. Wholly mammoth had huge range, that was reduced to small islands towards end of its existence #RSfossil
Bennett: messages:
living fossils are a definable entity, represent a distinct section of biodiversity, experience low rates of both speciation & extinction, and conserving living fossils is not a waste of time #RSfossil
living fossils are a definable entity, represent a distinct section of biodiversity, experience low rates of both speciation & extinction, and conserving living fossils is not a waste of time #RSfossil
February 19, 2025 at 12:45 AM
Bennett: messages:
living fossils are a definable entity, represent a distinct section of biodiversity, experience low rates of both speciation & extinction, and conserving living fossils is not a waste of time #RSfossil
living fossils are a definable entity, represent a distinct section of biodiversity, experience low rates of both speciation & extinction, and conserving living fossils is not a waste of time #RSfossil
Kiessling: Conclusions: going behind baselines is necessary & possible. Sampling always an issue. Coherent patterns across temporal scales but there re exceptions. Novel ideas for bridging required. Identifying the unnown unknowns (Foster et al 2018) #RSfossil
February 19, 2025 at 12:40 AM
Kiessling: Conclusions: going behind baselines is necessary & possible. Sampling always an issue. Coherent patterns across temporal scales but there re exceptions. Novel ideas for bridging required. Identifying the unnown unknowns (Foster et al 2018) #RSfossil
Lockwood: some groups have high extinction risks in tropics, others all over their distribution (figure from Finnegan et al 2015)
#RSfossil
#RSfossil
February 19, 2025 at 12:35 AM
Lockwood: some groups have high extinction risks in tropics, others all over their distribution (figure from Finnegan et al 2015)
#RSfossil
#RSfossil
Dalén: ecosystem during late Pleistocene was highly unstable. Revolution in DNA sequencing technology during past 2 decades brought down cost of sequencing, now entire genomes are very affordable
#RSfossil
#RSfossil
February 19, 2025 at 12:35 AM
Dalén: ecosystem during late Pleistocene was highly unstable. Revolution in DNA sequencing technology during past 2 decades brought down cost of sequencing, now entire genomes are very affordable
#RSfossil
#RSfossil
Blois: used empirical fossil data (mammals + pollen) plus climate simulations to build sets of models to explain variation in assemblages #RSfossil
February 19, 2025 at 12:29 AM
Blois: used empirical fossil data (mammals + pollen) plus climate simulations to build sets of models to explain variation in assemblages #RSfossil
Lockwood: some predictors of extinction risk did emerge (e.g., geo distribution, like occurrence, latitudinal range....). Also ecological and taxonomic factors
see Finnegan et al 2015, Science
#RSfossil
see Finnegan et al 2015, Science
#RSfossil
February 19, 2025 at 12:24 AM
Lockwood: some predictors of extinction risk did emerge (e.g., geo distribution, like occurrence, latitudinal range....). Also ecological and taxonomic factors
see Finnegan et al 2015, Science
#RSfossil
see Finnegan et al 2015, Science
#RSfossil
Kiessling: looking at reefs in deep-time, these are less volatile than constituent species. Ecosystems respond more readily but differently than individual species #RSfossil
February 19, 2025 at 12:24 AM
Kiessling: looking at reefs in deep-time, these are less volatile than constituent species. Ecosystems respond more readily but differently than individual species #RSfossil
Schreve: events of exceptionally rapid & abrupt change led to disarmonious communities, high turnover and microrefugia. A number of holocene survivors, but many group disappeared #RSfossil
February 19, 2025 at 12:24 AM
Schreve: events of exceptionally rapid & abrupt change led to disarmonious communities, high turnover and microrefugia. A number of holocene survivors, but many group disappeared #RSfossil
Turvey: palaeontological, zooarchaeological and historical records are invaluable resource for reconstructing pre-human environments & biodiversity loss through time, but interpreting & extrapolating what they show requires both caution and context #RSfossil
February 19, 2025 at 12:24 AM
Turvey: palaeontological, zooarchaeological and historical records are invaluable resource for reconstructing pre-human environments & biodiversity loss through time, but interpreting & extrapolating what they show requires both caution and context #RSfossil
Lockwood: looked at multiple groups of skeletonized marine taxa using online databases (paleobiology DB Obis, Worms...). These are common, easily fossilized groups; worked at genus-level #RSfossil
February 19, 2025 at 12:19 AM
Lockwood: looked at multiple groups of skeletonized marine taxa using online databases (paleobiology DB Obis, Worms...). These are common, easily fossilized groups; worked at genus-level #RSfossil
Kiessling: advantage of fossil record: it does not contain anthropogenic stressors complicating responses. Makes it easier to: potentially better isolate impact of temperature-related stressors (TRS) in past & see when TRS lead to ecosystem collapse or mass extinctions #RSfossil
February 19, 2025 at 12:19 AM
Kiessling: advantage of fossil record: it does not contain anthropogenic stressors complicating responses. Makes it easier to: potentially better isolate impact of temperature-related stressors (TRS) in past & see when TRS lead to ecosystem collapse or mass extinctions #RSfossil
Bennett: discordance in use of term due to range of definitions, range of factors & conflicting living fossil examples (see Bennet et al 2018, https://palaeo-electronica.org/content/2018/2194-quantifying-the-living-fossil) #RSfossil
Quantifying the living fossil
Quantifying the living fossil concept
palaeo-electronica.org
February 19, 2025 at 12:19 AM
Bennett: discordance in use of term due to range of definitions, range of factors & conflicting living fossil examples (see Bennet et al 2018, https://palaeo-electronica.org/content/2018/2194-quantifying-the-living-fossil) #RSfossil
#RSfossil meeting @royalsociety organized by @ErinSaupe and Samuel Turvey: The past is a foreign country: how much can the fossil record actually inform conservation?
February 19, 2025 at 12:14 AM
#RSfossil meeting @royalsociety organized by @ErinSaupe and Samuel Turvey: The past is a foreign country: how much can the fossil record actually inform conservation?
Clapham: oceans are being transformed as pH, temperature, oxygen content are change at rates that are unprecedented in recent geological past, probably rates not seen in past 55 my #RSfossil
February 19, 2025 at 12:14 AM
Clapham: oceans are being transformed as pH, temperature, oxygen content are change at rates that are unprecedented in recent geological past, probably rates not seen in past 55 my #RSfossil
Schreve: Where are we in natural progression of current interglacial cycle? How do faunas evolve? And what are effects of length, stability and warmth? #RSfossil
February 19, 2025 at 12:14 AM
Schreve: Where are we in natural progression of current interglacial cycle? How do faunas evolve? And what are effects of length, stability and warmth? #RSfossil
Blois: what factors are most important in structuring patterns & responses? Climate & humans during past 25 ky both have influenced megaherbivores, fires & vegetation assemblages #RSfossil
February 19, 2025 at 12:14 AM
Blois: what factors are most important in structuring patterns & responses? Climate & humans during past 25 ky both have influenced megaherbivores, fires & vegetation assemblages #RSfossil