CHANGE IN BIOLOGICAL REFERENCE POINTS UNDER DIFFERENT BIOLOGICAL, FISHERY, AND ENVIRONMENTAL FACTORS

Scup : Stock Assessment and Biological Reference Points for 2008

Scup 293 Executive Summary The current biomass reference point for scup relies on the index of Spawning Stock Biomass (SSB) from the NEFSC spring trawl survey. Previous reviews of the stock assessment have indicated that while this index may be the most reliable fishery independent index of scup SSB, it is subject to a relatively high degree of inter-annual variability that reduces its utility ...

The Prevalence of Childhood Obesity and Some Biological-Environmental Associated Factors in Neishabour-Iran, Winter 2006

OBJECTIVE: The prevalence of childhood obesity is increasing worldwide. This study investigated the prevalence of obesity and its associated factors in schoolchildren of Neishabour, winter 2006. MATERIALS AND METHODS: In a cross–sectional study, 1471 students, aged 6-12 years, were selected by a two-stage cluster sampling. Height and weight of the students were measured and BMI was calculated...

Total mercury (T-Hg) in Anomalocardia brasiliana (Mollusca) under different biological and environmental conditions

The objective was to determine the spatial-temporal distribution of total mercury (T-Hg) bioavailability at the Goiana Estuary using Anomalocardia brasiliana as model organism. Two seasons (rainy in February and dry in August), three habitats of the tidal flats (upper, middle and lower) and two size classes (<20 mm and >20 mm) were considered. In addition, depurated and non-depurated samples we...

Fishery and biological aspects of anchovy Kilka ( Clupeonella engrauliformis) in the southern Caspian Sea

  This paper aimed to investigate the fishery and biological characteristics of anchovy Kilka in Iranian waters of the Caspian Sea from 2005-2007, including length and age structure ,Von Bertalanffy growth parameters, length and age at first capture, condition factor, sex ratio, natural and fishing mortality. The examination of catch data approved that Kilka population in the Caspian Sea have b...

Biological and Ecological Dimensions of Global Environmental Change