Nature research paper: Origination of the modern-style diversity gradient 15 million years ago
. Here we quantify the emergence of the LDG in planktonic foraminifera at high spatiotemporal resolution over the past 40 million years, finding that a modern-style gradient arose only 15 million years ago. Spatial and temporal models suggest that LDGs for planktonic foraminifera may be controlled by the physical structure of the water column.
Steepening of the latitudinal temperature gradient over 15 million years ago, associated with an increased vertical temperature gradient at low latitudes, may have enhanced niche partitioning and provided more opportunities for speciation at low latitudes. Supporting this hypothesis, we find that higher rates of low-latitude speciation steepened the diversity gradient, consistent with spatiotemporal patterns of depth partitioning by planktonic foraminifera.
France Dernières Nouvelles, France Actualités
Similar News:Vous pouvez également lire des articles d'actualité similaires à celui-ci que nous avons collectés auprès d'autres sources d'information.
Rob Gronkowski blames mother nature for missed Super Bowl ‘kick of destiny’Mother Nature apparently ruined Rob Gronkowski’s “Kick of Destiny.”
Lire la suite »
A latitudinal gradient of deep-sea invasions for marine fishes - Nature CommunicationsThis study finds that high-latitude fish clades with the fastest speciation rates also exhibit elevated rates of depth evolution, creating a prevailing latitudinal gradient of deep-sea invasions concentrated in poleward regions. These results advance our understanding of how niche lability and climate shape global patterns of species distributions.
Lire la suite »
Lake Erie Nature & Science Center offers internshipsThe center is accepting applications for its astronomy and space science education internship and its wildlife internship through Feb. 28.
Lire la suite »
Realization of a multi-turn energy recovery accelerator - Nature PhysicsBy combining energy recovery technology and a multi-turn accelerating scheme in a linear accelerator, high-power beams can be achieved with considerably reduced energy consumption.
Lire la suite »
How Pakistan’s community health workers use telemedicine for women’s health - Nature MedicineSeveral hundred community health workers offer telehealth services that put women in underserved communities in touch with doctors.
Lire la suite »
These animals are nature’s clingiest loversFor Valentine’s Day, we celebrate animal pairs that literally stick together.
Lire la suite »