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Author Topic: New developments in the field of science  (Read 421436 times)

T40cfr403

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Re: New developments in the field of science
« Reply #2655 on: November 29, 2019, 05:21:57 PM »
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Only within the moment of time represented by the present century has one species -- man -- acquired significant power to alter the nature of the world.
― Rachel Carson, Silent Spring

T40cfr403

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Re: New developments in the field of science
« Reply #2656 on: November 29, 2019, 05:25:38 PM »
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Only within the moment of time represented by the present century has one species -- man -- acquired significant power to alter the nature of the world.
― Rachel Carson, Silent Spring

T40cfr403

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Re: New developments in the field of science
« Reply #2657 on: November 29, 2019, 05:28:19 PM »
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Only within the moment of time represented by the present century has one species -- man -- acquired significant power to alter the nature of the world.
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T40cfr403

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Re: New developments in the field of science
« Reply #2658 on: November 29, 2019, 05:30:44 PM »
Did human hunting activities alone drive great auks' extinction?

https://www.sciencedaily.com/releases/2019/11/191126121215.htm?utm_source=feedburner&utm_medium=email&utm_campaign=Feed%3A+sciencedaily%2Fplants_animals%2Fbirds+%28Birds+News+--+ScienceDaily%29

Researchers study chickens, ostriches, penguins to learn how flight feathers evolved

https://www.sciencedaily.com/releases/2019/11/191127161439.htm?utm_source=feedburner&utm_medium=email&utm_campaign=Feed%3A+sciencedaily%2Fplants_animals%2Fbirds+%28Birds+News+--+ScienceDaily%29

Paper: The Making of a Flight Feather: Bio-architectural Principles and Adaptation

https://www.cell.com/cell/fulltext/S0092-8674(19)31229-2?_returnURL=https%3A%2F%2Flinkinghub.elsevier.com%2Fretrieve%2Fpii%2FS0092867419312292%3Fshowall%3Dtrue


(A and A′) Representative molecular control and morphological transition during rachis morphogenesis. Conceptual diagram based on data from Figures 1D and 6A (A). Two distinct strategies for optimizing rachis architecture of flight feathers used in birds with burst (i.e., chickens) versus sustained (i.e., eagles) flight modes (A′). Early birds use a powerful shaft architecture and more complex composite beam type architectures. Modern sustained flying birds show a trend toward a simpler design with a strong but light shaft. Based on data from Figure 2.
(B) Schematic drawings showing increased complexity of feather branching morphogenesis. Overall feather shape is based on barb branches that progress from radial symmetry (Harris et al., 2005, Yu et al., 2002) to bilateral symmetric (Yue et al., 2005, Yue et al., 2006), to bilateral asymmetry (Li et al., 2017). Three barbule shapes (Figure 6B), filamentous (light blue), plate (blue), and hooklet-bearing (dark blue) are shown. Vane formation based on overlapping plate barbules (middle panel) or the hooklet mechanism (2nd from the right) allows fluffy 3D plumulaceous branches to be organized into a 2D vane plane.
« Last Edit: November 29, 2019, 05:44:27 PM by T40cfr403 »
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Only within the moment of time represented by the present century has one species -- man -- acquired significant power to alter the nature of the world.
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T40cfr403

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Re: New developments in the field of science
« Reply #2659 on: November 29, 2019, 05:45:58 PM »
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Only within the moment of time represented by the present century has one species -- man -- acquired significant power to alter the nature of the world.
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T40cfr403

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Re: New developments in the field of science
« Reply #2660 on: November 29, 2019, 06:07:41 PM »
Bald eagles attack loons, but that's not why loons are struggling

https://granitegeek.concordmonitor.com/2019/11/22/bald-eagles-attack-loons-but-thats-not-why-loons-are-struggling/

Abstract: Influence of nesting Bald Eagles (Haliaeetus leucocephalus) on Common Loon (Gavia immer) occupancy and productivity in New Hampshire

https://www.wjoonline.org/doi/full/10.1676/18-75


An adult loon strikes back at a bald eagle predating a newly hatched loon chick on the Loon Preservation Committee?s Live Loon Cam. Photo by Loon Preservation Committee.
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Only within the moment of time represented by the present century has one species -- man -- acquired significant power to alter the nature of the world.
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T40cfr403

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Re: New developments in the field of science
« Reply #2661 on: November 29, 2019, 06:56:35 PM »
Got a game camera? Let's team up.

https://www.mpgranch.com/dispatches/got-game-camera-lets-team




Guest opinion: Shooting prairie dogs? Try nonlead ammo

https://billingsgazette.com/opinion/columnists/guest-opinion-shooting-prairie-dogs-try-nonlead-ammo/article_21cdb301-3cc9-5c69-a7f6-a7cf8d476573.html


A red-tailed hawk scavenges a ground squirrel.


Scavenging Shot Prairie Dogs And Gophers

https://www.mpgranch.com/dispatches/scavenging-shot-prairie-dogs-and-gophers




WSB: Seeking bullets lethal to small mammals, not scavengers

https://wildlife.org/wsb-seeking-bullets-lethal-to-small-mammals-not-scavengers/


A radiograph of a Columbian ground squirrel shot with a .17 HMR rifle reveals a constellation of bullet fragments. Sapphire Animal Hospital


Research Abstracts:

Free lunch, may contain lead: scavenging shot small mammals

https://wildlife.onlinelibrary.wiley.com/doi/abs/10.1002/jwmg.21716

Better bullets to shoot small mammals without poisoning scavengers

https://wildlife.onlinelibrary.wiley.com/doi/full/10.1002/wsb.822
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Only within the moment of time represented by the present century has one species -- man -- acquired significant power to alter the nature of the world.
― Rachel Carson, Silent Spring

T40cfr403

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Re: New developments in the field of science
« Reply #2662 on: November 30, 2019, 01:37:33 PM »
Abstracts:

Light affects parental provisioning behaviour in a cavity‐nesting Passerine

https://onlinelibrary.wiley.com/doi/abs/10.1111/jav.02254?af=R

Senescence in the city: exploring ageing patterns of a long‐lived raptor across an urban gradient

https://onlinelibrary.wiley.com/doi/abs/10.1111/jav.02247?af=R
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Only within the moment of time represented by the present century has one species -- man -- acquired significant power to alter the nature of the world.
― Rachel Carson, Silent Spring

T40cfr403

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Re: New developments in the field of science
« Reply #2663 on: November 30, 2019, 02:15:40 PM »
Five Birds Have Changed What We Know About How Animals-and Planes-Fly

https://www.popularmechanics.com/science/animals/a29960298/bird-drag-lift-flight-research/

Paper: Birds repurpose the role of drag and lift to take off and land (hope you like math!)

https://www.nature.com/articles/s41467-019-13347-3??utm_medium=affiliate&utm_source=commission_junction&utm_campaign=3_nsn6445_deeplink_PID5320236&utm_content=deeplink


The surprising study reveals birds tilt and angle their wings to accelerate using drag and slow down using lift.
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Only within the moment of time represented by the present century has one species -- man -- acquired significant power to alter the nature of the world.
― Rachel Carson, Silent Spring

T40cfr403

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Re: New developments in the field of science
« Reply #2664 on: November 30, 2019, 02:33:02 PM »
Scientific study which claims the loss of 3 BILLION birds since 1970 is accused of scaremongering

https://wellstonjournal.com/scientific-study-which-claims-the-loss-of-3-billion-birds-since-1970-is-accused-of-scaremongering.html

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Only within the moment of time represented by the present century has one species -- man -- acquired significant power to alter the nature of the world.
― Rachel Carson, Silent Spring

T40cfr403

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Re: New developments in the field of science
« Reply #2665 on: November 30, 2019, 03:18:13 PM »
Heat stress is causing desert bird populations to collapse

https://news.mongabay.com/2019/11/heat-stress-is-causing-desert-bird-populations-to-collapse/

Paper: Cooling requirements fueled the collapse of a desert bird community from climate change

https://www.pnas.org/content/116/43/21609


Large, carnivorous birds, such as turkey vultures, get all of their water from the animals they eat. As temperatures rise, these species face the most difficulty consuming enough water to stay cool. Photo by Sean Peterson
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Only within the moment of time represented by the present century has one species -- man -- acquired significant power to alter the nature of the world.
― Rachel Carson, Silent Spring

T40cfr403

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Re: New developments in the field of science
« Reply #2666 on: November 30, 2019, 03:21:59 PM »
Population Decline Has Hawaii's Songbirds Singing The Same Tune

https://www.forbes.com/sites/grrlscientist/2019/11/29/population-decline-has-hawaiis-songbirds-singing-the-same-tune/#76b019957ec4

Paper: Loss of cultural song diversity and the convergence of songs in a declining Hawaiian forest bird community

https://royalsocietypublishing.org/doi/10.1098/rsos.190719

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Only within the moment of time represented by the present century has one species -- man -- acquired significant power to alter the nature of the world.
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T40cfr403

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Re: New developments in the field of science
« Reply #2667 on: November 30, 2019, 03:29:30 PM »
New England's Migratory Birds Like To Eat Local, Too

https://www.wbur.org/earthwhile/2019/11/27/new-england-birds-native-fruit

Paper: Can invasive species replace native species as a resource for birds under climate change? A case study on bird-fruit interactions

https://www.sciencedirect.com/science/article/pii/S0006320719314946?via%3Dihub


A hermit thrush, which migrates in late autumn thanks to climate change, increasingly encounters invasive fruits like the multiflora rose above. But the birds don't really eat them, the study finds. (Courtesy Jeremiah Trimble)
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Re: New developments in the field of science
« Reply #2668 on: November 30, 2019, 03:38:43 PM »
Avian botulism killed 18,000 birds at Sambhar: Govt report

https://www.downtoearth.org.in/news/climate-change/avian-botulism-killed-18-000-birds-at-sambhar-govt-report-67866


Dead birds at Sambhar lake. Photo: Vikas Choudhary
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T40cfr403

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Re: New developments in the field of science
« Reply #2669 on: November 30, 2019, 05:11:12 PM »
Lift-off for first African vulture safe zones

https://news.mongabay.com/2019/11/lift-off-for-first-african-vulture-safe-zones/

Paper: Another Continental Vulture Crisis: Africa's Vultures Collapsing toward Extinction

https://conbio.onlinelibrary.wiley.com/doi/full/10.1111/conl.12182


Major threats to vulture populations. Four quantitative factors constituted a serious threat to African vulture populations in 26 countries (n = 7,819 recorded deaths; Table S5). "Poisoning" includes dead vultures that were victims of intentional or unintentional poisoning. "Trade in traditional medicine" indicates the number of vultures found dead without their heads, or the number of vultures or their parts counted on sale in markets. "Killing for food" indicates the number of dead vultures or their parts counted either when traders were observed at markets or after they were arrested. "Electrical infrastructure" is the number of vultures found electrocuted below power lines or other electrical infrastructure.
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Only within the moment of time represented by the present century has one species -- man -- acquired significant power to alter the nature of the world.
― Rachel Carson, Silent Spring