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Environmental DNA allows upscaling spatial patterns of biodiversity in freshwater ecosystems 期刊论文
NATURE COMMUNICATIONS, 2020, 11 (1)
作者:  Carraro, Luca;  Maechler, Elvira;  Wuethrich, Remo;  Altermatt, Florian
收藏  |  浏览/下载：8/0  |  提交时间：2020/07/21
Characterizing soundscapes across diverse ecosystems using a universal acoustic feature set 期刊论文
PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA, 2020, 117 (29) : 17049-17055
作者:  Sethi, Sarab S.;  Jones, Nick S.;  Fulcher, Ben D.;  Picinali, Lorenzo;  Clink, Dena Jane;  Klinck, Holger;  Orme, C. David L.;  Wrege, Peter H.;  Ewers, Robert M.
收藏  |  浏览/下载：24/0  |  提交时间：2020/07/09
machine learning  acoustic  soundscape  monitoring  ecology  
iEcology: Harnessing Large Online Resources to Generate Ecological Insights 期刊论文
TRENDS IN ECOLOGY & EVOLUTION, 2020, 35 (7) : 630-639
作者:  Jaric, Ivan;  Correia, Ricardo A.;  Brook, Barry W.;  Buettel, Jessie C.;  Courchamp, Franck;  Di Minin, Enrico;  Firth, Josh A.;  Gaston, Kevin J.;  Jepson, Paul;  Kalinkat, Gregor;  Ladle, Richard;  Soriano-Redondo, Andrea;  Souza, Allan T.;  Roll, Uri
收藏  |  浏览/下载：14/0  |  提交时间：2020/08/18
A remnant planetary core in the hot-Neptune desert 期刊论文
NATURE, 2020, 583 (7814) : 39-+
作者:  David J. Armstrong;  Thé;  o A. Lopez;  Vardan Adibekyan;  Richard A. Booth;  Edward M. Bryant;  Karen A. Collins;  Magali Deleuil;  Alexandre Emsenhuber;  Chelsea X. Huang;  George W. King;  Jorge Lillo-Box;  Jack J. Lissauer;  Elisabeth Matthews;  Olivier Mousis;  Louise D. Nielsen;  Hugh Osborn;  Jon Otegi;  Nuno C. Santos;  Sé;  rgio G. Sousa;  Keivan G. Stassun;  Dimitri Veras;  Carl Ziegler;  Jack S. Acton;  Jose M. Almenara;  David R. Anderson;  David Barrado;  Susana C. C. Barros;  Daniel Bayliss;  Claudia Belardi;  Francois Bouchy;  Cé;  sar Briceñ;  o;  Matteo Brogi;  David J. A. Brown;  Matthew R. Burleigh;  Sarah L. Casewell;  Alexander Chaushev;  David R. Ciardi;  Kevin I. Collins;  Knicole D. Coló;  n;  Benjamin F. Cooke;  Ian J. M. Crossfield;  Rodrigo F. Dí;  az;  Elisa Delgado Mena;  Olivier D. S. Demangeon;  Caroline Dorn;  Xavier Dumusque;  Philipp Eigmü;  ller;  Michael Fausnaugh;  Pedro Figueira;  Tianjun Gan;  Siddharth Gandhi;  Samuel Gill;  Erica J. Gonzales;  Michael R. Goad;  Maximilian N. Gü;  nther;  Ravit Helled;  Saeed Hojjatpanah;  Steve B. Howell;  James Jackman;  James S. Jenkins;  Jon M. Jenkins;  Eric L. N. Jensen;  Grant M. Kennedy;  David W. Latham;  Nicholas Law;  Monika Lendl;  Michael Lozovsky;  Andrew W. Mann;  Maximiliano Moyano;  James McCormac;  Farzana Meru;  Christoph Mordasini;  Ares Osborn;  Don Pollacco;  Didier Queloz;  Liam Raynard;  George R. Ricker;  Pamela Rowden;  Alexandre Santerne;  Joshua E. Schlieder;  Sara Seager;  Lizhou Sha;  Thiam-Guan Tan;  Rosanna H. Tilbrook;  Eric Ting;  Sté;  phane Udry;  Roland Vanderspek;  Christopher A. Watson;  Richard G. West;  Paul A. Wilson;  Joshua N. Winn;  Peter Wheatley;  Jesus Noel Villasenor;  Jose I. Vines;  Zhuchang Zhan
收藏  |  浏览/下载：19/0  |  提交时间：2020/07/06

The interiors of giant planets remain poorly understood. Even for the planets in the Solar System, difficulties in observation lead to large uncertainties in the properties of planetary cores. Exoplanets that have undergone rare evolutionary processes provide a route to understanding planetary interiors. Planets found in and near the typically barren hot-Neptune '  desert'  (1,2)(a region in mass-radius space that contains few planets) have proved to be particularly valuable in this regard. These planets include HD149026b(3), which is thought to have an unusually massive core, and recent discoveries such as LTT9779b(4)and NGTS-4b(5), on which photoevaporation has removed a substantial part of their outer atmospheres. Here we report observations of the planet TOI-849b, which has a radius smaller than Neptune'  s but an anomalously large mass of39.1-2.6+2.7Earth masses and a density of5.2-0.8+0.7grams per cubic centimetre, similar to Earth'  s. Interior-structure models suggest that any gaseous envelope of pure hydrogen and helium consists of no more than3.9-0.9+0.8 per cent of the total planetary mass. The planet could have been a gas giant before undergoing extreme mass loss via thermal self-disruption or giant planet collisions, or it could have avoided substantial gas accretion, perhaps through gap opening or late formation(6). Although photoevaporation rates cannot account for the mass loss required to reduce a Jupiter-like gas giant, they can remove a small (a few Earth masses) hydrogen and helium envelope on timescales of several billion years, implying that any remaining atmosphere on TOI-849b is likely to be enriched by water or other volatiles from the planetary interior. We conclude that TOI-849b is the remnant core of a giant planet.


Observations of TOI-849b reveal a radius smaller than Neptune'  s but a large mass of about 40 Earth masses, indicating that the planet is the remnant core of a gas giant.


  
Weather at the winter and stopover areas determines spring migration onset, progress, and advancements in Afro-Palearctic migrant birds 期刊论文
PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA, 2020, 117 (29) : 17056-17062
作者:  Haest, Birgen;  Hueppop, Ommo;  Bairlein, Franz
收藏  |  浏览/下载：13/0  |  提交时间：2020/07/06
phenology  environmental plasticity  microevolution  behavioral flexibility  conservation  
Assessing metacommunity processes through signatures in spatiotemporal turnover of community composition 期刊论文
ECOLOGY LETTERS, 2020
作者:  Jabot, Franck;  Laroche, Fabien;  Massol, Francois;  Arthaud, Florent;  Crabot, Julie;  Dubart, Maxime;  Blanchet, Simon;  Munoz, Francois;  David, Patrice;  Datry, Thibault
收藏  |  浏览/下载：11/0  |  提交时间：2020/06/22
beta-diversity  demographic stochasticity  dispersal limitation  environmental filtering  path analysis  
Astronaut with sights on Mars 期刊论文
NATURE, 2020, 581 (7809) : 367-367
作者:  Funabashi, Masanori;  Grove, Tyler L.;  Wang, Min;  Varma, Yug;  McFadden, Molly E.;  Brown, Laura C.;  Guo, Chunjun;  Higginbottom, Steven;  Almo, Steven C.;  Fischbach, Michael A.
收藏  |  浏览/下载：19/0  |  提交时间：2020/07/03

NASA astronaut Jessica Watkins is at the forefront of a new crop of space explorers destined for the Moon, and maybe one day, Mars.


NASA astronaut Jessica Watkins is at the forefront of a new crop of space explorers destined for the Moon, and maybe one day, Mars.


  
Geometry and evolution of the ecological niche in plant-associated microbes 期刊论文
NATURE COMMUNICATIONS, 2020, 11 (1)
作者:  Chaloner, Thomas M.;  Gurr, Sarah J.;  Bebber, Daniel P.
收藏  |  浏览/下载：7/0  |  提交时间：2020/06/16
Mineral dust increases the habitability of terrestrial planets but confounds biomarker detection 期刊论文
NATURE COMMUNICATIONS, 2020, 11 (1)
作者:  Boutle, Ian A.;  Joshi, Manoj;  Lambert, F. Hugo;  Mayne, Nathan J.;  Lyster, Duncan;  Manners, James;  Ridgway, Robert;  Kohary, Krisztian
收藏  |  浏览/下载：9/0  |  提交时间：2020/06/16
In situ evidence of thermally induced rock breakdown widespread on Bennu's surface 期刊论文
NATURE COMMUNICATIONS, 2020, 11 (1)
作者:  Molaro, J. L.;  39;Aubigny, C. Drouet
收藏  |  浏览/下载：8/0  |  提交时间：2020/06/16