نتایج جستجو برای: ecological capacity

تعداد نتایج: 374336  

Journal: :Ecology letters 2013
S Creel M S Becker S M Durant J M'Soka W Matandiko A J Dickman D Christianson E Dröge T Mweetwa N Pettorelli E Rosenblatt P Schuette R Woodroffe S Bashir R C Beudels-Jamar S Blake M Borner C Breitenmoser F Broekhuis G Cozzi T R B Davenport J Deutsch L Dollar S Dolrenry I Douglas-Hamilton E Fitzherbert C Foley L Hazzah P Henschel R Hilborn J G C Hopcraft D Ikanda A Jacobson B Joubert D Joubert M S Kelly L Lichtenfeld G M Mace J Milanzi N Mitchell M Msuha R Muir J Nyahongo S Pimm G Purchase C Schenck C Sillero-Zubiri A R E Sinclair A N Songorwa M Stanley-Price C A Tehou C Trout J Wall G Wittemyer A Zimmermann

Packer et al. reported that fenced lion populations attain densities closer to carrying capacity than unfenced populations. However, fenced populations are often maintained above carrying capacity, and most are small. Many more lions are conserved per dollar invested in unfenced ecosystems, which avoid the ecological and economic costs of fencing.

2008
Timothy J. Foxon Lindsay C. Stringer Mark S. Reed

Addressing challenges of maintaining social welfare and opportunity in the face of severe ecological pressures requires frameworks for addressing and governing long-term social-ecological change. This paper analyses what two recent frameworks could learn from each other. The first aims to understand transitions in socio-technical systems, by analysing dynamic interactions between three levels: ...

2013

Objectives – After lab you will be able to • describe the relationship between food availability and single-species population density (carrying capacity) • explain how competition influences the carrying capacity of individual species where they cooccur and compete • explain why predation is important for maintaining species diversity • realize the difficulty of predicting ecological outcomes ...

2014
Bridget Freisthler Sharon Lipperman-Kreda Melina Bersamin Paul J. Gruenewald

Prevention researchers have found that drinking in different contexts is related to different alcohol problems. Where and with whom people drink affects the types of alcohol-related problems they experience. Consequently, identifying those contexts that result in the greatest number of problems provides a novel opportunity to target new prevention efforts aimed at those contexts. However, ident...

Journal: :Trends in ecology & evolution 2010
F Stuart Chapin Stephen R Carpenter Gary P Kofinas Carl Folke Nick Abel William C Clark Per Olsson D Mark Stafford Smith Brian Walker Oran R Young Fikret Berkes Reinette Biggs J Morgan Grove Rosamond L Naylor Evelyn Pinkerton Will Steffen Frederick J Swanson

Ecosystem stewardship is an action-oriented framework intended to foster the social-ecological sustainability of a rapidly changing planet. Recent developments identify three strategies that make optimal use of current understanding in an environment of inevitable uncertainty and abrupt change: reducing the magnitude of, and exposure and sensitivity to, known stresses; focusing on proactive pol...

Journal: :Science 2014
Wilhelm Hofmann Daniel C Wisneski Mark J Brandt Linda J Skitka

The science of morality has drawn heavily on well-controlled but artificial laboratory settings. To study everyday morality, we repeatedly assessed moral or immoral acts and experiences in a large (N = 1252) sample using ecological momentary assessment. Moral experiences were surprisingly frequent and manifold. Liberals and conservatives emphasized somewhat different moral dimensions. Religious...

2012
M. LAFOURCADE

Let us assume we are given a triangle K. Is it possible to compute subrings? We show that L′′ → א0. Is it possible to extend super-linearly canonical, embedded equations? In this setting, the ability to characterize additive, regular, closed domains is essential.

2013
Bud P. Bruegger Moritz-Christian Müller

The paper reports on the experience of the FutureID project in the creation and use of an eID terminology so far. A major part of work has reviewed the state of the art in eID Terminologies. Five existing terminologies have been compared and analyzed in detail to yield unexpected and surprising results. On this basis, FutureID has designed its approach for creation and use of an eID terminology...

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