William J. Ripple
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Where the buffalo roam: Ungulate influences on quaking aspen and willow communities in the Greater Yellowstone Ecosystem Open
Quaking aspen ( Populus tremuloides ) and willows ( Salix spp.) are keystone species of montane and shrub‐steppe landscapes of the Western United States. Intact communities dominated by these species provide a wide range of ecosystem servi…
Global scale assessment of the human-induced extinction crisis of terrestrial carnivores Open
Human impacts on carnivores are a persistent conservation challenge worldwide. We present a global analysis showing the overlap of conservation lands and the cumulative impact of humans on the distribution ranges of 257 terrestrial carnivo…
View article: Scientists' warning on climate change and insects
Scientists' warning on climate change and insects Open
Climate warming is considered to be among the most serious of anthropogenic stresses to the environment, because it not only has direct effects on biodiversity, but it also exacerbates the harmful effects of other human‐mediated threats. T…
The strength of the Yellowstone trophic cascade after wolf reintroduction Open
Trophic cascades, the indirect effects of predators propagating downward through food webs, play a critical role in shaping ecosystems. We evaluated the strength of a large carnivore-induced trophic cascade in northern Yellowstone National…
Scientists’ warning on fossil fuels Open
The evidence is clear that fossil fuels—and the fossil fuel industry and its enablers—are driving a multitude of interlinked crises that jeopardize the breadth and stability of life on Earth. Every stage of the fossil fuel life cycle—extra…
Reducing irrigation of livestock feed is essential to saving Great Salt Lake Open
The Great Salt Lake of Utah (US) is of great economic, cultural, and spiritual importance, yet rapid depletion of the lake in recent decades gravely threatens these values. The lake's shrinkage is attributable to anthropogenic consumption …
View article: Scientists’ warning: six key points where biodiversity can improve climate change mitigation
Scientists’ warning: six key points where biodiversity can improve climate change mitigation Open
Journal Article Scientists' warning: six key points where biodiversity can improve climate change mitigation Get access Cássio Cardoso Pereira, Cássio Cardoso Pereira Knowledge Center for Biodiversity, Belo Horizonte, Minas Gerais, BrazilE…
View article: Earth at risk: An urgent call to end the age of destruction and forge a just and sustainable future
Earth at risk: An urgent call to end the age of destruction and forge a just and sustainable future Open
Human development has ushered in an era of converging crises: climate change, ecological destruction, disease, pollution, and socioeconomic inequality. This review synthesizes the breadth of these interwoven emergencies and underscores the…
Integrative research of Mediterranean climate regions: a global call to action Open
Summary Mediterranean climate regions (hereafter ‘Med-regions’) cover small areas globally but harbour a wide diversity of ecosystems that are under serious threat due to current global climate change. Despite intensive research and conser…
Scavenging with invasive species Open
Carrion acts as a hotspot of animal activity within many ecosystems globally, attracting scavengers that rely on this food source. However, many scavengers are invasive species whose impacts on scavenging food webs and ecosystem processes …
Aspen recovery in northern Yellowstone: A comment on Brice et al. (2021) Open
Aspen sapling recruitment increased as browsing by elk decreased, following the 1995–96 reintroduction of wolves in Yellowstone National Park. We address claims by Brice et al. (2021) that previous studies exaggerated recent aspen recovery…
Replication Data for Scientists’ Petitions Concerning Climate Change Open
No prior studies considering the signatories of scientific petitions which do and do not support the consensus on anthropogenic climate change exist. Additionally, little focus is paid to the support for climate change action of scientific…
Southern Alaska's Forest Landscape Integrity, Habitat, and Carbon Are Critical for Meeting Climate and Conservation Goals Open
The interdependent crises of climate change and biodiversity losses require strategic policies to protect, manage, and restore essential ecosystems. Here, we evaluate the relative importance of US national forests (NFs) for protection and …
Bison alter the northern Yellowstone ecosystem by breaking aspen saplings Open
The American bison ( Bison bison ) is a species that strongly interacts with its environment, yet the effects of this large herbivore on quaking aspen ( Populus tremuloides ) have received little study. We documented bison breaking the ste…
Universities should lead on the plant-based dietary transition Open
National audience
Scientists' Warning on Technology Open
In the past several years, scientists have issued a series of warnings about the threats of climate change and other forms of environmental disruption. Here, we provide a scientists' warning on how technology affects these issues. Technolo…
View article: Restoring Asia’s roar: Opportunities for tiger recovery across the historic range
Restoring Asia’s roar: Opportunities for tiger recovery across the historic range Open
Wildlife conservation in the Anthropocene requires bold conservation solutions including restoration of ecosystems and species. The recovery of large carnivore populations is a conservation goal which can generate significant benefits in t…