In 2010–2018, Northern Patagonia featured the longest severe drought of last millennium. This extreme dry spell triggered widespread growth decline and forest dieback. Nonetheless, roles played by two major mechanisms driving dieback, hydraulic failure carbon starvation, are still not clear understudied in this seasonally region. Here, for 1800–2017 period, we apply a retrospective analysis rad...

Abstract • Key message Ash dieback decreases individual reproductive success of ash trees leaving healthy overrepresented as seed and pollen parents for next-generation seedlings. Substantial gene flow over hundreds meters combined with superior fertility creates optimism the species’ future in European forests. Context Hymenoscyphus fraxineus is causing high mortality ( Fraxinus excelsior L.)....

The correlation between climate change and pine tree dieback must be understood to implement a proactive forest management system. In this study, an ensemble model combining random forest, the generalized boosting model, linear was used analyze topographical environmental characteristics of trees suffering from in Wangpicheon Ecosystem Landscape Conservation Area, areas which are at risk were e...

McDonald, Philip M.; Tappeiner, John C., II. 2002. California’s hardwood resource: seeds, seedlings, and sprouts of three important forest-zone species. Gen. Tech. Rep. PSW-GTR-185. Albany, CA: Pacific Southwest Research Station, Forest Service, U.S. Department of Agriculture; 39 p. Although California black oak, tanoak, and Pacific madrone are the principal hardwood species in the forest zone ...

Forest dieback because of drought is a global phenomenon threatening particular tree populations. Particularly vulnerable stands are usually located in climatically stressing locations such as xeric sites subjected to seasonal drought. These populations show pronounced loss vitality, growth decline, and high mortality response extreme climate events heat waves droughts. However, do not uniforml...

Since 2001, patches of dying vegetation have been observed in Georgia marshes, generally during periods of dry or drought conditions. These events are collectively referred to as salt marsh dieback. Salt marsh dieback is characterized by the thinning and browning of Spartina alterniflora and other marsh grasses which eventually leads to plant death. This is a concern because salt marsh habitat ...

Abstract Key message Paternity analyses show that effective pollination of ash ( Fraxinus excelsior L.) in a seed orchard and floodplain forest affected by dieback is more likely to be facilitated healthier males. Thereby, natural selection can have positive effect on the health future generations. Context Ongoing increasing fragmentation populations may result reduced pollen flow, which reduce...

The Yellow River Delta (YRD) has China's largest artificial Robinia pseudoacacia forest, which was planted in the late 1970s and suffered extensive dieback 1990s. health grade of R.pseudoacacia forest (named canopy vigor grade, CVG) could be achieved by using high-resolution images indicators (CVIs). However, a previous study showed that there no significant correlation between CVG field-estima...