1. Land use (e.g. urbanization, agriculture, natural lands management) may directly affect populations by habitat loss and fragmentation, and indirectly by altering conditions needed for reproductive success. The effects of urbanization are especially pronounced for populations that remain among urbanized areas, but they are difficult to detect in long-lived species. 2. We evaluated the effects...

The use of cypress (Taxodium species) for mulch boomed during the 1990s, and its growth in popularity created concerns about the sustainability of cypress forests in the Southern United States. A combination of factors, including Hurricane Katrina, cypress harvesting practices, and the unique requirements for successful regeneration of cypress drew media attention and fueled debates over sustai...

The megafossil record of Chamaecyparis (Cupressaceae) in the Northern Hemisphere, especially that in Europe, is reviewed with the aim of gaining a better understanding of the biogeographic history of this genus and providing an explanation of the causes of eastern Asian and western and eastern North American intercontinental disjunction of extant members. The fossil data available favor the hyp...

In this study, we assessed the antitumor activity of the methanol extract from wood chips of the heartwood of the Taiwan red cypress, Chamaecyparis formosensis Matsumura, which is a precious tree species endemic to Taiwan. A brine shrimp lethality test (BST) indicated that the ethyl acetate (EtOAc)-soluble extract from the MeOH extract was a suitable candidate (LC (50) = 15.36 microg/mL) for fu...

In this study we examined the validity of canopy closure curve as a reference in relation to light conditions and demonstrated applicability different thinning types. An even-aged sugi (Cryptomeria japonica) plantation 91 years was thinned heavily transformed two-storied stand by underplanting with hinoki cypress (Chamaecyparis obtusa) seedlings. Three initial sample plots were selected before ...

Abstract We previously reported the species-specific annual ring formation characteristics of three conifers (slash pine ( Pinus elliottii ), hinoki (Japanese cypress, Chamaecyparis obtusa ) and sugi cedar, Cryptomeria japonica )) grown in same stand over 2 years. found that affected inherent difference wood density among these > sugi). Plant hormones cambial-region tissues were believed to ...

There is increasing interest in using natural enemies to control pests urban green spaces, but this often hampered by a lack of information on particular pest groups. Here we provide an assessment for the first time seasonal population coccid species and its Chamaecyparis lawsoniana (A. Murray) Parl, 1864. The main pest, Planococcus vovae (Nasonov, 1909), attacked parasitoids predators. Accordi...