Results 31 to 40 of about 26,309 (230)

What does the occurrence of Sporormiella (Preussia) spores mean in Australian fossil sequences? [PDF]

open access: yes, 2018
Understanding the loss of the final few species of Australian megafauna is beset by a paucity of data on human arrival, well-provenanced megafauna, human/megafauna population range and distribution (coexistence and interaction), and the range, scale and ...
Dodson, John, Field, Judith H.
core   +1 more source

Understanding the Distribution of Marine Megafauna in the English Channel Region: Identifying Key Habitats for Conservation within the Busiest Seaway on Earth [PDF]

open access: yes, 2014
The temperate waters of the North-Eastern Atlantic have a long history of maritime resource richness and, as a result, the European Union is endeavouring to maintain regional productivity and biodiversity. At the intersection of these aims lies potential
Bograd, Steven J.   +13 more
core   +10 more sources

Lack of detectable chemosynthesis at a sponge dominated subarctic methane seep

open access: yesFrontiers in Earth Science, 2023
We used high-resolution imagery within a Geographic Information System (GIS), free gas and porewater analyses and animal bulk stable isotope measurements to characterize the biotic and abiotic aspects of the newly discovered Vestbrona Carbonate Field ...
Melina Sinner   +9 more
doaj   +1 more source

Santa Elina, Mato Grosso, site ancien au centre de l’Amérique du Sud

open access: yesBrésil(s), 2022
Due to its geographical location and its Pleistocene-era antiquity, the Santa Elina rock shelter renews the analysis of prehistoric settlements in South America. In the mountains where the shelter is hidden, Pleistocene men hunted a Glossotherium, 27,000
Denis Vialou, Águeda Vilhena Vialou
doaj   +1 more source

A new 3-D modelling method to extract subtransect dimensions from underwater videos [PDF]

open access: yes, 2012
Underwater video transects have become a common tool for quantitative analysis of the seafloor. However a major difficulty remains in the accurate determination of the area surveyed as underwater navigation can be unreliable and image scaling does not ...
Fillinger, Laura, Funke, Tobias
core   +2 more sources

Climate Change Will Re-draw the Map for Marine Megafauna and the People Who Depend on Them

open access: yesFrontiers in Marine Science, 2020
Climate change is expected to dramatically alter the distribution of many marine megafauna, impacting the people and economies that depend upon them. We build on the recent literature by developing a framework to describe the effects these changes will ...
Susan O. Grose   +8 more
doaj   +1 more source

Anthropogenic seed dispersal: rethinking the origins of plant domestication

open access: yes, 2020
It is well documented that ancient sickle harvesting led to tough rachises, but the other seed dispersal properties in crop progenitors are rarely discussed. The first steps toward domestication are evolutionary responses for the recruitment of humans as
Spengler, R.
core   +1 more source

Using Drone Footage to Analyze the Effect of Diver Presence on Juvenile Manta Ray Behavior

open access: yesDrones
Manta ray tourism has become a multi-million-dollar industry proposed as a conservation tool in recent decades; however, its impacts remain unclear. We use drones and Markov models to quantify the effects of diver presence on a juvenile population of the
Miguel de Jesús Gómez-García   +2 more
doaj   +1 more source

Are we eating the world's megafauna to extinction?

open access: yesConservation Letters, 2019
Many of the world's vertebrates have experienced large population and geographic range declines due to anthropogenic threats that put them at risk of extinction. The largest vertebrates, defined as megafauna, are especially vulnerable.
William J. Ripple   +9 more
doaj   +1 more source

Trophic and feeding ecology of whale sharks (Rhincodon typus) using bulk stable isotope analysis

open access: yesFrontiers in Fish Science
IntroductionDespite their size, relatively passive behavior, and commercial significance, knowledge of the behavioral ecology of whale sharks remains limited.
Clare E. M. Prebble   +4 more
doaj   +1 more source

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