Search Results - "R. Ehrlich"

Biological annihilation via the ongoing sixth mass extinction signaled by vertebrate population losses and declines by Ceballos, Gerardo, Ehrlich, Paul R., Dirzo, Rodolfo

“…The population extinction pulse we describe here shows, from a quantitative viewpoint, that Earth’s sixth mass extinction is more severe than perceived when…”
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Vertebrates on the brink as indicators of biological annihilation and the sixth mass extinction by Ceballos, Gerardo, Ehrlich, Paul R., Raven, Peter H.

“…The ongoing sixth mass species extinction is the result of the destruction of component populations leading to eventual extirpation of entire species…”
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Opinion: To feed the world in 2050 will require a global revolution by Ehrlich, Paul R., Harte, John

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Accuracy of chest x-ray screening of silica-exposed miners for tuberculosis by Maboso, B, Ehrlich, R I

“…Abstract Background The World Health Organization recommends systematic chest X-ray (CXR) screening for tuberculosis (TB) in silica-exposed workers. However,…”
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Role of economics in analyzing the environment and sustainable development by Polasky, Stephen, Kling, Catherine L., Levin, Simon A., Carpenter, Stephen R., Daily, Gretchen C., Ehrlich, Paul R., Heal, Geoffrey M., Lubchenco, Jane

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Global mammal distributions, biodiversity hotspots, and conservation by Ceballos, Gerardo, Ehrlich, Paul R

“…Hotspots, which have played a central role in the selection of sites for reserves, require careful rethinking. We carried out a global examination of…”
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Global distribution and conservation of marine mammals by Pompa, Sandra, Ehrlich, Paul R, Ceballos, Gerardo

“…We identified 20 global key conservation sites for all marine (123) and freshwater (6) mammal species based on their geographic ranges. We created geographic…”
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Accelerated modern human-induced species losses: Entering the sixth mass extinction by Ceballos, Gerardo, Ehrlich, Paul R, Barnosky, Anthony D, García, Andrés, Pringle, Robert M, Palmer, Todd M

“…The oft-repeated claim that Earth's biota is entering a sixth "mass extinction" depends on clearly demonstrating that current extinction rates are far above…”
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Forest bolsters bird abundance, pest control and coffee yield by Karp, Daniel S, Mendenhall, Chase D, Sandí, Randi Figueroa, Chaumont, Nicolas, Ehrlich, Paul R, Hadly, Elizabeth A, Daily, Gretchen C, Lawler, Joshua

“…Efforts to maximise crop yields are fuelling agricultural intensification, exacerbating the biodiversity crisis. Low‐intensity agricultural practices, however,…”
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Intervention Ecology: Applying Ecological Science in the Twenty-first Century by Hobbs, Richard J, Hallett, Lauren M, Ehrlich, Paul R, Mooney, Harold A

“…Rapid, extensive, and ongoing environmental change increasingly demands that humans intervene in ecosystems to maintain or restore ecosystem services and…”
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Self-Reported Visual Difficulty and Daily Activity Limitations: The Moderating Role of Neighborhood Characteristics by Qin, Weidi, Clarke, Philippa J, Ehrlich, Joshua R

“…Abstract Background and Objectives Understanding how neighborhood-level factors moderate the relationship between visual health and activity limitations could…”
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Does aquaculture add resilience to the global food system? by Troell, Max, Naylor, Rosamond L., Metian, Marc, Beveridge, Malcolm, Tyedmers, Peter H., Folke, Carl, Arrow, Kenneth J., Barrett, Scott, Crépin, Anne-Sophie, Ehrlich, Paul R., Gren, Åsa, Kautsky, Nils, Levin, Simon A., Nyborg, Karine, Österblom, Henrik, Polasky, Stephen, Scheffer, Marten, Walker, Brian H., Xepapadeas, Tasos, de Zeeuw, Aart

“…Aquaculture is the fastest growing food sector and continues to expand alongside terrestrial crop and livestock production. Using portfolio theory as a…”
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Mammal Population Losses and the Extinction Crisis by Ceballos, Gerardo, Ehrlich, Paul R.

“…The disappearance of populations is a prelude to species extinction. No geographically explicit estimates have been made of current population losses of major…”
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Where does biodiversity go from here? A grim business-as-usual forecast and a hopeful portfolio of partial solutions by Ehrlich, Paul R, Pringle, Robert M

“…The threats to the future of biodiversity are many and well known. They include habitat conversion, environmental toxification, climate change, and direct…”
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Discoveries of new mammal species and their implications for conservation and ecosystem services by Ceballos, Gerardo, Ehrlich, Paul R

“…In light of recent discoveries of many new species of poorly-studied organisms, we examine the biodiversity of mammals, a well known "charismatic" group. Many…”
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Computer-aided detection for tuberculosis and silicosis in chest radiographs of gold miners of South Africa by Young, C., Barker, S., Ehrlich, R., Kistnasamy, B., Yassi, A.

“…BACKGROUND: For over one hundred years, the gold mining sector has been a considerable source of tuberculosis (TB) and silicosis disease burden across Southern…”
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More than just indicators: A review of tropical butterfly ecology and conservation by Bonebrake, Timothy C., Ponisio, Lauren C., Boggs, Carol L., Ehrlich, Paul R.

“…Roughly 90% of butterfly species live in the tropics. Despite this, we know very little about tropical butterfly ecology particularly when compared to…”
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Social Norms and Global Environmental Challenges: The Complex Interaction of Behaviors, Values, and Policy by Kinzig, Ann P, Ehrlich, Paul R, Alston, Lee J, Arrow, Kenneth, Barrett, Scott, Buchman, Timothy G, Daily, Gretchen C, Levin, Bruce, Levin, Simon, Oppenheimer, Michael, Ostrom, Elinor, Saari, Donald

“…Government policies are needed when people's behaviors fail to deliver the public good. Those policies will be most effective if they can stimulate long-term…”
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Vision impairment and cognitive decline among older adults: a systematic review by Nagarajan, Niranjani, Assi, Lama, Varadaraj, V, Motaghi, Mina, Sun, Yi, Couser, Elizabeth, Ehrlich, Joshua R, Whitson, Heather, Swenor, Bonnielin K

“…ObjectivesThere has been increasing epidemiological research examining the association between vision impairment (VI) and cognitive impairment and how poor…”
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Accuracy of a low-cost, portable, refractive error estimation device: Results of a diagnostic accuracy trial by Joseph, Sanil, Sundar, Balagiri, Rashme, Vinitha L, Venkatachalam, Soundarya, Ehrlich, Joshua R, Ravilla, Thulasiraj

“…Purpose To assess the accuracy of refraction measurements by ClickCheck.sup.TM compared with the standard practice of subjective refraction at a tertiary level…”
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