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There is increasing evidence that forage nutrition quality is becoming more unstable over time due to climate change and/or human activities. However, there are limited numbers of studies at the regional scale exploring the spatiotemporal patterns and driving mechanisms of temporal stability of nutrition quality. Therefore, this study quantified the spatiotemporal patterns of temporal stability of forage nutrition quality in alpine grasslands of the Qinghai-Tibet Plateau under the singular or combined influences of climate change and human activities in 2000-2020. Temporal stability of forage nutrition quality displayed obvious spatiotemporal patterns, with human activities altering the impact of climate change on these spatiotemporal patterns. Under combined effects of climate change and human activities, spatial average values of temporal stability of crude protein (CP), ash (Ash), ether extract (EE), water-soluble carbohydrates (WSC), acid detergent fiber (ADF), and neutral detergent fiber (NDF) decreased by 13.54 %, 7.40 %, 9.02 %, 17.78 %, 9.20 %, and 7.28 % across the whole grasslands, respectively. However, 39.43 %, 45.72 %, 42.98 %, 37.82 %, 42.27 %, and 43.50 % areas showed increasing trends for the temporal stability of CP, Ash, EE, WSC, ADF and NDF, respectively. Climate change predominated 46.15 %, 44.46 %, 44.22 %, 47.32 %, 28.68 %, and 45.31 % of the relative change of temporal stability of CP, Ash, EE, WSC, ADF, and NDF, but human activities had higher influence for 53.82 %, 55.53 %, 55.77 %, 52.55 %, 71.30 %, and 54.68 % of grasslands, respectively. Therefore, the spatial patterns of temporal stability of forage nutrition quality were shifting towards homogeneity, with an overall decrease in temporal stability but localized increases in alpine grasslands of the Qinghai-Tibet Plateau. The effects of climate change and human activities on forage nutrition quality were not always synergistic. The trade-off between nutrition quality and its temporal stability did not always exist, but varied with geographic position., Competing Interests: Declaration of competing interest The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper., (Copyright © 2024 Elsevier B.V. All rights reserved.)

The Everglades of south Florida, although degraded, imparts vital ecosystem benefits, including contributions to high quality drinking water supplies and habitat for a number of threatened and endangered species. Restoration of the Everglades can improve the provision of these benefits but also may impose tradeoffs with competing societal demands. This study focuses on understanding public preferences for Everglades restoration and estimating the willingness to pay (WTP) values for restored ecosystem services (ES) through the implementation of a discrete choice experiment (DCE). We collected data from 2302 respondents from the general public from an online survey designed to elicit WTP values for selected ecological and social attributes associated with Everglades restoration scenarios. We compare the findings to results from earlier studies (Milon et al., 1999; Milon and Scrogin, 2005), which also estimated WTP values among Floridians for Everglades restoration. For some attributes, WTP for Everglades restoration appears to have slightly increased while for others WTP appears to have decreased. We estimated statewide aggregate WTP values for components of species population restoration up to $2B over 10 years. Several factors impeded a direct comparison of current and historical WTP values, including time elapsed, different samples and sampling methods- which may have implications for integrating ecosystem service valuation studies into water management decisions. [ABSTRACT FROM AUTHOR]