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#Korallenriff

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Um sich vor einem Sonnenbrand zu schützen, greifen die meisten Menschen ganz selbstverständlich zu Sonnenschutzmitteln. Welche Folgen hat das für Korallenriffe? Und was bedeutet Sonnenschutz für’s Klima?

#Hautkrebs #Klimaschutz #Korallenriff #Meeresschutz #MissionEnergiewende #Sonnencreme #MissionEnergiewende:DerKlimaPodcast

detektor.fm/wissen/mission-ene

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@KathrinBB was virallem passieren wird ist "hydrostatische Rebalance".

  • Falls mensch sich fragt, warum nen Freiband nicht im Winter das Schwimmbecken entleert (Der Betonboden würde nach oben aufbrechen!), mag sich das gleiche mit bis zu 3km Eis in Grönland und bis zu 4km Eis in der Antarktis vorstellen.

In der letzten eisfreien Zeit war der #Meeresspielgel 135m über #WGS84 - "Normalnull" und die #Eifel nen #Korallenriff!

Wenn ich richtig liege lebt über die Hälfte aller Menschen und 85% aller Nahrungsmittelproduktion im Bereich ≤150m Höhe...

Diese Partnergrundel mit dem wohlklingenden Art-Namen *Mahidolia mystacina* konnte ich letztes Jahr gemeinsam mit ihrem symbiotischen Knallkrebs auf/in schwarzem Vulkansand fotografieren. Während der Krebs das Höhlensystem erhält, wacht die Grundel am Höhleneingang.
Nun steht sie als erste iNat-Beobachtung ihrer Art in Papua Neuguinea bei #inaturalist : inaturalist.org/observations/2

Tiefere #Korallen in den #FloridaKeys könnten flacheren Riffen helfen, sich zu erholen. Eine neue Studie zeigt, dass mesophotische Korallen, die tiefer als 100 Fuß leben, von #Umweltstress besser geschützt sind und genetisches Potenzial für die Wiederherstellung beschädigter flacher #Riffe bieten. Die Ergebnisse deuten darauf hin, dass diese tieferen #Korallenpopulationen wichtige genetische Vielfalt und #Fortpflanzungsressourcen liefern könnten.

#Korallenriff #Science

nature.com/articles/s41437-024

NatureCryptic diversity of shallow and mesophotic Stephanocoenia intersepta corals across Florida Keys National Marine Sanctuary - HeredityPopulation genetic analyses can provide useful data on species’ regional connectivity and diversity which can inform conservation and restoration efforts. In this study, we quantified the genetic connectivity and diversity of Stephanocoenia intersepta corals from shallow (<30 m) to mesophotic (30–45 m) depths across Florida Keys National Marine Sanctuary. We generated single nucleotide polymorphism (SNP) markers to identify genetic structuring of shallow and mesophotic S. intersepta corals. We uncovered four distinct, cryptic genetic lineages with varying levels of depth-specificity. Shallow-specific lineages exhibited lower heterozygosity and higher inbreeding relative to depth-generalist lineages found across both shallow and mesophotic reefs. Estimation of recent genetic migration rates demonstrated that mesophotic sites are more prolific sources than shallow sites, particularly in the Lower Keys and Upper Keys. Additionally, we compared endosymbiotic Symbiodiniaceae among sampled S. intersepta using the ITS2 region and SymPortal analysis framework, identifying symbionts from the genera Symbiodinium, Breviolum, and Cladocopium. Symbiodiniaceae varied significantly across depth and location and exhibited significant, but weak correlation with host lineage and genotype. Together, these data demonstrate that despite population genetic structuring across depth, some mesophotic populations may provide refuge for shallow populations moving forward and remain important contributors to the overall genetic diversity of this species throughout the region. This study highlights the importance of including mesophotic as well as shallow corals in population genetic assessments and informs future science-based management, conservation, and restoration efforts within Florida Keys National Marine Sanctuary.

"Global #CoralBleaching Crisis Driven by Ocean Heat- CNN

Global coral reefs are undergoing mass bleaching due to record ocean heat driven by the #climateCrisis, warned two scientific bodies on Monday. Experts fear this could mark the worst bleaching event in history, according to CNN."

#korallenriff #korallen

leaders-mena.com/global-coral-

Leaders · Global Coral Bleaching Crisis Driven by Ocean Heat- CNNBy Sanaa Hasan

"Ocean heat is driving a global coral bleaching event, and it could be the worst on record

#Coralreefs around the world are experiencing a mass #bleaching event as the #climate crisis drives record-breaking ocean heat, two scientific bodies announced Monday — with some experts warning this could become the worst bleaching period in recorded history."

#korallenriff #korallen

edition.cnn.com/2024/04/15/cli

"#Coral research finds bleaching impedes reproduction and hinders recovery

#Bleaching can suppress reproduction in a common coral species found in the Great Barrier Reef, hampering future reef replenishment, new research led by the Australian Institute of Marine Science (AIMS) and James Cook University (JCU) has identified."

#korallenriff #korallen #greatbarrierreef #australia

phys.org/news/2024-03-coral-im

Phys.org · Coral research finds bleaching impedes reproduction and hinders recoveryBy Science X

Schon bisschen verrückt, oder?

"Scientists are using underwater speakers to help restore degraded coral reefs: Study

Researchers have discovered a new method that could encourage the restoration of degraded coral reef populations, which have been declining around the world due to record-high marine temperatures."

#korallenriff #korallen

abcnews.go.com/International/s

ABC News · Scientists are using underwater speakers to help restore degraded coral reefs: StudyBy Julia Jacobo