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Predicted per cent MPB mortality

Description

Extended periods of extreme cold (below -38°C) can cause up to 95 per cent mortality of over-wintering mountain pine beetles, which is required to suppress populations. These maps display... More ≫

Description

Extended periods of extreme cold (below -38°C) can cause up to 95 per cent mortality of over-wintering mountain pine beetles, which is required to suppress populations. These maps display predicted per cent mortality, based on a mountain pine beetle overwinter mortality model used by the province to predict per cent mortality based on winter temperatures and location data. These mortality predictions, combined with aerial surveys and ground assessments conducted in August/September, help the province prioritize areas for single tree treatment and timber harvest control tactics implemented in the fall and winter.

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A preliminary survey of pharmaceuticals and endocrine disrupting compounds in treated municipal wastewaters and receiving rivers of Alberta

Description

Pharmaceuticals, hormones, and other known or suspected endocrine disrupting compounds have been widely detected in various waters throughout the world. Prior to this study, however, sampling for... More ≫

Description

Pharmaceuticals, hormones, and other known or suspected endocrine disrupting compounds have been widely detected in various waters throughout the world. Prior to this study, however, sampling for these substances was rather limited within Alberta. In 2002 and 2003, due to concerns about potential impacts on humans, livestock, aquatic organisms, and wildlife, Alberta Environment collected wastewater treatment plant (WWTP) effluents and receiving river water from numerous locations throughout the province and analysed them for a broad range of organic wastewater contaminants (OWCs). This initial survey, encompassing an assortment of pharmaceuticals, antibiotics, steroids, surfactants, and plasticizers, was designed to determine which compounds are released by WWTPs in Alberta and to assess their presence in receiving river waters.

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Survey protocol for the northern leopard frog

Description

This document describes a species-based survey protocol for the sampling of the northern leopard frog in Alberta. The protocol may be adapted for inventories of other amphibian species. Three... More ≫

Description

This document describes a species-based survey protocol for the sampling of the northern leopard frog in Alberta. The protocol may be adapted for inventories of other amphibian species. Three sampling techniques for the leopard frog are described in the protocol and include a time-constrained visual encounter survey, a call (vocalization) survey and an egg mass count survey.

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