Results 51 to 60 of about 28,203 (283)
Anthropogenic seed dispersal: rethinking the origins of plant domestication
, 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
Prelude to the Anthropocene: Two new North American Land Mammal Ages (NALMAs) [PDF]
, 2014 Human impacts have left and are leaving distinctive imprints in the geological record. Here we show that in North America, the human-caused changes evident in the mammalian fossil record since c.
Allison Stegner, M +11 more
core +2 more sources
Trophic and feeding ecology of whale sharks (Rhincodon typus) using bulk stable isotope analysis
Frontiers in Fish ScienceIntroductionDespite 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
Are we eating the world's megafauna to extinction?
Conservation 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
Frontiers in Marine Science, 2019 Manta rays (Mobula spp.) are highly valued in nature-based tourism globally. In Indonesia, although manta rays are protected, critical information is lacking on their habitat use, population dynamics and movements. We investigate the population structure
Elitza S. Germanov +15 more
doaj +1 more source
A new 3-D modelling method to extract subtransect dimensions from underwater videos [PDF]
, 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
Megafauna extinctions produce idiosyncratic Anthropocene assemblages
Science Advances, 2022 The “trophic downgrading of planet Earth” refers to the systematic decline of the world’s largest vertebrates. However, our understanding of why megafauna extinction risk varies through time and the importance of site- or species-specific factors remain unclear.
Zachary Amir +3 more
openaire +4 more sources
The Anatomical Record, EarlyView.Abstract Basking sharks, Cetorhinus maximus (Gunnerus, Brugden [Squalus maximus], Det Kongelige Norske Videnskabers Selskabs Skrifter, 1765, vol. 3, pp. 33–49), feed by gaping their mouths and gill slits, greatly reorienting their cranial skeletons to filter food from water.
Tairan Li +12 more
wiley +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]
, 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 +8 more sources
Megafauna Identification Training Images
, 2021 This is the data repository for the journal paper Protecting endangered megafauna through AI analysis of drone images in a low-connectivity setting: A case study from Namibia.
Hua, Alice +10 more
openaire +1 more source