Leaves from 145-year-old and 44-year-old beech trees were harvested during 1991-1993. Chlorophyll (Chi) and redox components of the thylakoid membrane, including P-700, cytochrome / (C yt/) and D, protein, were determined with the following results. Chi a + b, P-700 and C y t/p er unit of fresh weight (FW), dry weight (DW ) and leaf area (LA ) increase significantly during leaf development. Thi...

Toads (Rhinella arenarum) received training with a novel incentive procedure involving access to solutions of different NaCl concentrations. In Experiment 1, instrumental behavior and weight variation data confirmed that such solutions yield incentive values ranging from appetitive (deionized water, DW, leading to weight gain), to neutral (300 mM slightly hypertonic solution, leading to no net ...

Secondary production of Chasmagnathus granulatus was calculated at the Refugio de Vida Silvestre Bahía Samborombón, Argentina (36 degrees 16' S and 57 degrees 06' W). Sampling was conducted on nine occasions between March 2001 and February 2003, crabs were collected by hand, physico-chemical variables, granulometry and organic matter contents of the sediments were registered. Crabs were classif...

Objective(s): Copper (Cu) is an essential dietary supplement in animal feeds, which plays an important role in maintaining the balance of all living organisms. Copper nanoparticles (nCu) participate in catalysing activities of multiple antioxidant/defensive enzymes and exerts pro-inflammatory and pro-apoptotic effects on systemic organs and tissues. The present study e...

Water scarcity is one of the key global challenges affecting food safety, security, and human health. Constructed wetlands (CWs) provide a sustainable tool to remediate wastewater. Here we explored potential vertical flow-CWs (VF-CWs) vegetated with ten indigenous wetland plant species treat chromium (Cr)-contaminated water. The plants were develop VF-CWs Cr-contaminated water in batch mode. Re...

Historical use of organochlorine pesticides (OCPs) in the Republic Moldova could pose a potential risk for aquatic environment due to persistence, bioaccumulation and toxic properties these environmental pollutants. However, knowledge on concentrations legacy OCPs is limited. In this study, surface sediment from two main rivers; Dniester (8 sites, n = 15) Prut (6 12), tributary Bîc (11 11) R?ut...

Throughout the world, people’s diet is generally quite restricted regarding variety of plants used in their daily regime. The Unconventional Food Plant (UFP) Lactuca canadensis L. an edible species wild lettuce sparsely described literature and considered to be native from eastern central parts North America. To valorize this as potential alternative food, analysis its nutritional, chemical, bi...

Monitoring pesticides in the environment requires use of sensitive analytical methods. However, existing methods are generally not suitable for analyzing small organisms, as they require large matrix masses. This study explores development a miniaturized extraction protocol monitoring based on only 30 mg matrix. The sample preparation was developed using fish and macroinvertebrate matrices. It ...

Since the environmental levels of selenium (Se) can moderate the bioaccumulation and toxicity of mercury (Hg) in marine organisms, their interactions were studied in seawater, sediments, plankton and the benthic (Bull ray Pteromylaeus bovinus, Eagle ray Myliobatis aquila) and the pelagic (Pelagic stingray Dasyiatis violacea) rays, as apex predators in the Gulf of Trieste (Northern Adriatic Sea)...

Abstract The interest in edible sea grapes ( Caulerpa lentillifera ) is increasing due to their potentially beneficial effect on human health. This macroalga, already used for direct and indirect consumption, grown aquacultures Vietnam Philippines. Here, the fronds of were examined antioxidant activity (AOA) at light intensities from 140 300 µmol photons m −2 s −1 compared commercially dehydrat...