The aim of the present study was to predict to what extent wetland characteristics can affect the habitat requirements of an exotic species, Azolla filiculoides (Lam.) in wetland. Biotic and abiotic variables were collected at the Selkeh wildlife refuge (a protected area in Anzali wetland, northern ...

The Bolivian part of the Amazon Basin contains a mega diverse and well-preserved fish fauna. Since the last decade, this fish fauna has received an increasing attention from scientists and the national authorities as fishes represent one of the most important sources of proteins for local human...

A crucial element in modelling habitat requirements of any alien plant species is selection of the most important predictive variables. A database consisting of measurements collected at 7 different sampling sites at Selkeh Wildlife Refuge (Anzali wetland, Iran) was applied to predict the habitat...

Alien species have the abilities to alter the ecosystems they invade. We used classification trees (CTs) to predict the distribution of an exotic species, Azolla filiculoides (Lam.), at Selkeh Wildlife Refuge located in Anzali wetland, northern Iran. Cover percentages of Azolla were modeled using...

Background and aims - The only semi-arid plant formations that occur in Andean Bolivia are prepuna with its associated dry valleys and puna. A quantitative ecological study was conducted in the district of Apillapampa, which is situated on the transition between the latter vegetation types. Methods ...

Support vector machines (SVMs) methods were used to predict distribution pattern of Azolla filiculoides (Lam.) which is an invasive aquatic fern at Selkeh Wildlife Refuge located in Anzali wetland (southern Caspian Sea, northern Iran). Various structural habitat and physico-chemical variables were...

Use of synthetic pesticides in developing countries is not only limited by their being expensive but also the small (uneconomic) fields whose limited production costs cannot offset costs of agricultural implements like agro-chemicals. Subsistence farmers, therefore, have no choice but to use local...

This paper presents the usefulness of weed species in semi-arid areas of Mpwapwa District, Central Tanzania. As crop production systems in these areas are often impacted by unreliable rainfall, frequent drought, and low soil fertility, smallholder farmers have developed different strategies to...

Weed surveys were carried out in 251 rice fields in the dry and intermediate rice growing zones of Sri Lanka in 1994-95. All species within 5×5 m plots were identified and farmers interviewed regarding weed management practices. During October-December 1994, 132 weed species belonging to 32...

Data on the prevalence of A. crassus in Anguilla anguilla in Flanders, Belgium, in 1986 is presented. In stations where imported eels (from the Netherlands) have been used for restocking, the samples generally showed high infection rates, indicating that this practice enhances the spread of A....