Results 41 to 50 of about 810,953 (233)

Embracing Complexity and Complexity-Awareness in Marine Megafauna Conservation and Research

open access: yesFrontiers in Marine Science, 2018
Conservation of marine megafauna is nested within an intricate tapestry of multiple ocean resource uses which are, in turn, embedded in a dynamic and complex ecological ocean system that varies and shifts across a wide range of spatial and temporal ...
Rebecca L. Lewison   +2 more
doaj   +1 more source

Future large hydropower dams impact global freshwater megafauna [PDF]

open access: yes, 2019
Dam construction comes with severe social, economic and ecological impacts. From an ecological point of view, habitat types are altered and biodiversity is lost.
Berlekamp, Juergen   +5 more
core   +1 more source

Translating the terrestrial mitigation hierarchy to marine megafauna by‐catch [PDF]

open access: yesFish and Fisheries, 2018
AbstractIn terrestrial and coastal systems, the mitigation hierarchy is widely and increasingly used to guide actions to ensure that no net loss of biodiversity ensues from development. We develop a conceptual model which applies this approach to the mitigation of marine megafauna by‐catch in fisheries, going from defining an overarching goal with an ...
Milner-Gulland, E   +12 more
openaire   +7 more sources

Insight into the kinematics of blue whale surface foraging through drone observations and prey data [PDF]

open access: yesPeerJ, 2020
To understand how predators optimize foraging strategies, extensive knowledge of predator behavior and prey distribution is needed. Blue whales employ an energetically demanding lunge feeding method that requires the whales to selectively feed where ...
Leigh G. Torres   +3 more
doaj   +2 more sources

Laser photogrammetry improves size and demographic estimates for whale sharks [PDF]

open access: yesPeerJ, 2015
Whale sharks Rhincodon typus are globally threatened, but a lack of biological and demographic information hampers an accurate assessment of their vulnerability to further decline or capacity to recover.
Christoph A. Rohner   +8 more
doaj   +2 more sources

Overhauling Ocean Spatial Planning to Improve Marine Megafauna Conservation

open access: yesFrontiers in Marine Science, 2019
Tracking data have led to evidence-based conservation of marine megafauna, but a disconnect remains between the many 1000s of individual animals that have been tracked and the use of these data in conservation and management actions.
Ana Micaela Martins Sequeira   +30 more
doaj   +1 more source

Our shifting perspectives on the oceans [PDF]

open access: yes, 2003
In the last 15 years new research findings have radically reshaped our understanding of human effects on ocean ecosystems. Here I describe five major shifts in perspective that reveal our impacts to be more severe and persistent than previously ...
Roberts, C.M.
core   +1 more source

Global late Quaternary megafauna extinctions linked to humans, not climate change [PDF]

open access: yes, 2014
The late Quaternary megafauna extinction was a severe global-scale event. Two factors, climate change and modern humans, have received broad support as the primary drivers, but their absolute and relative importance remains controversial.
Boslough M   +11 more
core   +2 more sources

Exposure of marine megafauna to cumulative anthropogenic threats in north-west Australia

open access: yesFrontiers in Ecology and Evolution, 2023
As the use of coastal and offshore environments expands, there is a need to better understand the exposure of marine megafauna to anthropogenic activities that potentially threaten their populations.
L. Ferreira   +27 more
semanticscholar   +1 more source

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