Results 71 to 80 of about 41,300 (301)
AnimalsIn Africa, hares (Lepus spp.) show a high variability in external phenotypes. Species identification, delimitation, and distinction are difficult, due to the generally shallow evolutionary divergence of species, high intraspecific phenotypic variability,
Asma Awadi +4 more
doaj +1 more source
Indirect effects of primary prey population dynamics on alternative prey
, 2014 We develop a theory of generalist predation showing how alternative prey species are affected by changes in both mean abundance and variability (coefficient of variation) of their predator's primary prey.
Barraquand, Frederic +3 more
core +1 more source
Impact of Nitrogen Deposition on Carbon and Nitrogen Cycling in Peatlands Under Land‐Use Change
Land Degradation &Development, EarlyView.ABSTRACT Increasing nitrogen (N) deposition significantly alters carbon and N dynamics in peatlands by affecting microbial processes, enhancing greenhouse gas emissions and nutrient leaching into adjacent waters. However, how peatland conversion for agriculture and forestry influences the fate of added N under elevated atmospheric deposition remains ...
Yujing Deng +3 more
wiley +1 more source
Applying allometric scaling to predator-prey systems [PDF]
, 2019 In population dynamics, mathematical models often contain too many parameters to be easily testable. A way to reliably estimate parameters for a broad range of systems would help us obtain clearer predictions from theory.
Eilersen, Andreas, Sneppen, Kim
core +2 more sources
International Journal of Osteoarchaeology, EarlyView.ABSTRACT The golden eagle (Aquila chrysaetos) nests in rock cavities where it accumulates prey bone remains during the breeding season. Because nests can be reoccupied from year to year, these faunal elements can form remarkable bone accumulations and, in the sub‐fossil record, be mixed with assemblages derived from human or other predator activities ...
Juliette Ripond +5 more
wiley +1 more source
Why Money Trickles Up - Wealth & Income Distributions [PDF]
, 2011 This paper combines ideas from classical economics and modern finance with the general Lotka-Volterra models of Levy & Solomon to provide straightforward explanations of wealth and income distributions.
Willis, Geoff
core +1 more source
People and Nature, EarlyView.Abstract While the return of wolves (Canis lupus) to many European countries is a conservation milestone, the negative impacts are unevenly distributed across society, placing high pressure on livestock grazing systems. For this perspective, scientists from diverse disciplines and geographical backgrounds reflect on the state of livestock–wolf ...
Emu‐Felicitas Ostermann‐Miyashita +11 more
wiley +1 more source
Journal of FungiDespite its ubiquitous infectivity to mammals with strong host specificity, our current knowledge about Pneumocystis has originated from studies of merely 4% of extant mammalian species. Further studies of Pneumocystis epidemiology across a broader range
Liang Ma +8 more
doaj +1 more source
Data‐free speculation does not make for testable hypotheses: A reply to Ripple et al.
Wildlife Society Bulletin, 2012 The role of top predators in structuring ecosystems is receiving substantial attention from ecologists. Ripple et al. (2011) recently posed a tentatively supported hypothesis that wolves (Canis lupus) may help restore populations of the U.S.
Karen E. Hodges
doaj +1 more source
People and Nature, EarlyView.Abstract Game meat contributes to human nutrition, food security and sociocultural practices around the world. Game meat also comes with risks, including overharvesting and zoonotic and food‐borne disease. These may be pronounced where game meat travels along complex value chains from rural to urban areas.
Brock Bersaglio +5 more
wiley +1 more source