Results 61 to 70 of about 26,309 (230)

Climate-human interaction associated with southeast Australian megafauna extinction patterns

open access: yesNature Communications, 2019
Whether Australia’s Pleistocene megafauna extinctions were caused by climate change, humans, or both is debated. Here, the authors infer the spatio-temporal trajectories of regional extinctions and find that water availability mediates the relationship ...
Frédérik Saltré   +7 more
doaj   +1 more source

Will woody plant encroachment impact the visitor experience and economy of conservation areas?

open access: yesKoedoe: African Protected Area Conservation and Science, 2013
Woody plant encroachment into savannas is a globally prevalent phenomenon and impacts ecosystem goods and services such as biodiversity, carbon storage, nutrient cycling, grazing and hydrology.
Emma F. Gray, William J. Bond
doaj   +1 more source

Priorities for ecological research on cetaceans in the Galápagos Islands

open access: yesFrontiers in Marine Science, 2023
Located in the eastern tropical Pacific, the Galápagos Islands are an oceanic insular ecosystem subject to strong environmental variability driven by local and regional processes.
Daniel M. Palacios   +3 more
doaj   +1 more source

Different megafauna vary in their seed dispersal effectiveness of the megafaunal fruit Platymitra macrocarpa (Annonaceae). [PDF]

open access: yesPLoS ONE, 2018
The world's largest terrestrial animals (megafauna) can play profound roles in seed dispersal. Yet, the term 'megafauna' is often used to encompass a diverse range of body sizes and physiologies of, primarily, herbivorous animals. To determine the extent
Kim R McConkey   +7 more
doaj   +1 more source

Description of the Pliocene marsupial Ambulator keanei gen. nov. (Marsupialia: Diprotodontidae) from inland Australia and its locomotory adaptations

open access: yesRoyal Society Open Science, 2023
Diprotodontids were the largest marsupials to exist and an integral part of Australian terrestrial ecosystems until the last members of the group became extinct approximately 40 000 years ago.
Jacob D. van Zoelen   +3 more
doaj   +1 more source

The functional extinction of Andean megafauna [PDF]

open access: yesEcology, 2016
AbstractControversy exists over the cause and timing of the extinction of the Pleistocene megafauna. In the tropical Andes, deglaciation and associated rapid climate change began ~8,000 years before human arrival, providing an opportunity to separate the effects of climate change from human hunting on megafaunal extinction. We present a paleoecological
Angela, Rozas-Davila   +2 more
openaire   +2 more sources

Simulated elephant foraging alters tree root exudation rates: Species‐specific responses and implications for belowground carbon dynamics in tropical forests

open access: yesPLANTS, PEOPLE, PLANET, EarlyView.
Asian elephants play crucial roles in ecosystem functioning, and their interactions with plants influence above‐ and belowground carbon cycling. We tested whether their mechanically destructive foraging triggers short‐term, stress‐induced shifts in tree root exudation, an underappreciated pathway linking herbivory to belowground carbon processes.
Pratibha Khatri   +3 more
wiley   +1 more source

Exploring indirect effects of a classic trophic cascade between urchins and kelp on zooplankton and whales

open access: yesScientific Reports
Kelp forest trophic cascades have been extensively researched, yet indirect effects to the zooplankton prey base and gray whales have not been explored. We investigate the correlative patterns of a trophic cascade between bull kelp and purple sea urchins
Lisa Hildebrand   +3 more
doaj   +1 more source

Enter the Anthropocene : an epoch of time characterised by humans [PDF]

open access: yes, 2009
In the first years of the 21st century Earth was being influenced by forces greater than our own and yet as vulnerable. With infinite complacency men and women went to and fro over this globe about their affairs, serene in their assurance of their ...
Williams, Mark, Zalasiewicz, Jan
core  

Cold-water coral reef frameworks, megafaunal communities and evidence for coral carbonate mounds on the Hatton Bank, north east Atlantic [PDF]

open access: yes, 2008
Offshore banks and seamounts sustain diverse megafaunal communities, including framework reefs formed by cold-water corals. Few studies have quantified environmental effects on the alpha or beta diversity of these communities.
Hartley, J.P.   +3 more
core   +1 more source

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