introduction   heavy metal contamination has disastrous effects on plant productivity and threatens human and animal health. among metals, cadmium (cd) is commonly released into the environment from industrial processes. cd is known to cause cellular damage in plants by producing oxidative stress via the over-production of reactive oxygen species (ros). to combat oxidative damage, plants have d...

Intensive management of southern pine plantations has yielded multifold increases in productivity over the last half century. The process of harvesting merchantable material and preparing a site for planting can lead to a considerable loss of organic matter. Intensively managed stands may experience more frequent disturbance as rotations decrease in length, exposing the stands to conditions tha...

Development o f longleaf (Pinus palustris IMiII 1 and loblolly tP taeda L i pine seediings growing under three light conditions-full sunlight, 30% shade, and 50% shade-was evaluated Although there was i ~ t t l e difference between development or seedlings in 30% and 50"/0 shade, those grown in ful l sunlight were signiticantly larger than shaded seedlings in dlameter and In top and root dry we...

Ant communities in longleaf pine habitats are poorly known and hence the naturally occurring ant assemblages of a large portion of southeastern North America are not well understood. This study examined the diverse ant community found in the longleaf pine flatwoods of north Florida and tested how ant diversity changes along a herbaceous ground cover gradient. Restoring the ground cover to its o...

*We examined the relationships between stem CO(2) efflux (E(s)), diameter growth, and nonstructural carbohydrate concentration in loblolly pine trees. Carbohydrate supply was altered via stem girdling during rapid stem growth in the spring and after growth had ceased in the autumn. We hypothesized that substrate type and availability control the seasonal variation and temperature sensitivity of...

Conventional throughfall collection methods are labor intensive and analytically expensive to implement at broad scales. This study was conducted to test an alternative approach requiring infrequent sample collection and a greatly reduced number of chemical analyses. The major objective of the study was to determine the feasibility of using ion exchange resin (IER) to measure N deposition in th...

Sereh wangi (Cymbopogen nardus) adalah salah satu jenis penghasil minyak atisri yang bernilai sangat tinggi. di Gayo Lues komoditas paling banyak diminati oleh masyarakat sekitar. Penyulingan sereh umumnya mengunakan sistem uap dan air bahan bakar digunakan kayu pinus (Pinus merkusii). Hal ini menjadi ancaman terhadap vegetasi hutan pinus, sehingga perlu alternatif mengalihkan dari kebutuhan al...