Download or read book An Assessment of the Ecological Condition of Streams and Rivers in Maroochy Shire Based on Macroinvertebrates as Biological Indicators written by and published by . This book was released on 1998 with total page 24 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book An Assessment of the Ecological Condition of the Streams and Rivers in the Condamine River Catchment Based on Macroinvertebrates as Bioindicators written by and published by . This book was released on 1998 with total page 30 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The state of the rivers written by John Anderson and published by . This book was released on 1993 with total page 127 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Studies of Benthic Macroinvertebrates and Fish in Streams Within EPA Region 3 for Development of Biological Indicators of Ecological Condition written by Eric P. Smith and published by . This book was released on 1997 with total page 85 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book An Assessment of the Ecological Condition of the Barron River Using Macroinvertebrates as Bioindicators written by Satish C. Choy and published by . This book was released on 1999 with total page 34 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book An Assessment of the Ecological Condition of the Burnett River Using Macroinvertebrates as Bioindicators written by and published by . This book was released on 1999 with total page 42 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Assessment of the Biological Health of Streams in the Caloundra Shire Based on the Aquatic Macroinvertebrate Community written by Queensland. Department of Natural Resources. Freshwater Biological Monitoring and published by . This book was released on 2000 with total page 33 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book State of the rivers written by Cerran Fawns and published by . This book was released on 2000 with total page 116 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Waterbug Book written by John Gooderham and published by CSIRO PUBLISHING. This book was released on 2002-07-05 with total page 240 pages. Available in PDF, EPUB and Kindle. Book excerpt: Freshwater macroinvertebrates provide a useful and reliable indicator of the health of our rivers, streams, ponds and wetlands. As environmental awareness within the community increases, there is an increasing interest in the need to assess the health of our local waterways and school curriculums are changing to reflect this important ecological trend. The Waterbug Book provides a comprehensive and accurate identification guide for both professionals and non-professionals. It contains an easy-to-use key to all the macroinvertebrate groups and, for the first time, high quality colour photographs of live specimens. It provides a wealth of basic information on the biology of macroinvertebrates, and describes the SIGNAL method for assessing river health. The Waterbug Book is full of practical tips about where to find various animals, and what their presence can tell about their environment. Winner of the 2003 Eureka Science Book Prize and the 2003 Whitley Medal.
Download or read book Assessment of the Ecological Health of Streams in the Bowen Broken Rivers Catchment Based on the Aquatic Macroinvertebrate Community and Water Quality and the Impact of Newlands Coal Mine on the Aquatic Environment written by Queensland. Department of Natural Resources. Freshwater Biological Monitoring and published by . This book was released on 2001 with total page 32 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Biological Assessment of River Health Using Macroinvertebrates written by Susan J. Nichols and published by . This book was released on 2000 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Aquatic macroinvertebrates are commonly used biological indicators for assessing the health of freshwater resources. Compared to traditional methods, 'rapid' biological assessment methods provide a quicker turn-around of results, reduced costs and more easily interpreted results. The assumption underpinning many biological assessment methods is that the resulting macroinvertebrate sample is representative of the site at the scale to be assessed while still fulfilling the 'rapid' criteria of the bioassessment process. Complete enumeration of the invertebrates in the large samples that are usually collected is time consuming and costly, and would negate one of the 'rapid' components of bioassessment. Therefore, sub-sampling is often done by fixed time/count live-picking in the field or with preserved material using sample splitters in the laboratory. These methods are commonly used in conjunction with AUSRIVAS predictive models as part of Australia's National River Health Program. The macroinvertebrate sub-sample is expected to be adequate for assessing a site adequately in comparison to reference sites. This study examined the effects of sampling area, replication and sub-sampling methods on biological assessment results.
Download or read book Assessment of the Ecological Condition of Freshwater Streams in the Darwin Region written by Peter L Dostine and published by . This book was released on 2002 with total page 80 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Macroinvertebrate Communities and Their Use as Biological Indicators of Stream Ecosystem Health written by Lucia Duso and published by . This book was released on 1996 with total page 70 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Use of Macroinvertebrate Subsamples and Family Level Identification to Assess Environmental Impacts on Streams written by Elizabeth Marie Chase and published by . This book was released on 1999 with total page 132 pages. Available in PDF, EPUB and Kindle. Book excerpt: "The species richness and diversity of pollution tolerant and intolerant macroinvertebrates provide an important tool to assess environmental impacts on streams. This study determined the efficacy of subsampling and family level identification in assessing water quality community structure and the biological health of the system. Fifty replicates of 100-, 300-, 500- 800- and 1000- organism subsamples were modeled using computer simulations based on actual Hess samples containing 1247 organisms (South Fork Boulder Creek) (SFB1) and 1234 organisms (California Creek). Ten replicates of California Creek were also handpicked to determine if there was bias in the computer model. Both handpicked and computer modeling gave similar results. South Fork Boulder 2 (SFB2) (2982 organisms) and South Fork Boulder 3 (SFB3) (4239 organisms) were also compared using the same computer modeling technique. Subsamples were compared using Hilsenhoffs species Biotic Index (HBI) and Family Biotic Index (FBI), taxa richness, feeding guild and taxa composition, Ephemeroptera, Plecoptera, Trichoptera (EPT) to Chironomidae ratio, EPT index, Shannon's diversity index and evenness, community loss index, %dominant taxon, and the EPA's Biotic Condition Score (%similarity to reference stream). HBI and FBI rated all subsample sizes the same: California Creek rated 2.45 and 4.16 (good); South Fork Boulder 1 rated 2.68 and 5.30 (fair), South Fork Boulder 2 rated 2.61 and 4.97 (fair), and South Fork Boulder 3 rated 2.63 and 5.0 (fair). Taxa richness (family and species) was significantly different at 100-organism subsamples in all streams and was also significantly different at the 300- organism level in the larger samples (SFB2 & 3). The ratio of shredders to total numbers remained relatively constant for all subsample sizes and all streams. The ratio of scrapers to filtering feeders differed among streams, however the groups were either under- or over-represented in all of the SFB's; California Creek had no filterers. EPT/Chironomidae ratio remained relatively constant for all subsample sizes and streams. The EPT index (family and species) was significantly different at 100-organism samples in all streams and was also significantly different at the 300-organism level in the larger samples (SFB2 & 3). Shannon's diversity index remained relatively constant for all subsample sizes and streams. Shannon's evenness measure rated all 100-organism subsamples as more similar than they actually were. The community loss index indicated there were significant differences in community structure at 100- and 300- organism subsamples for California Creek and SFB1 and also at 500-organism level in SFB2 and SFB3. %dominant taxon remained relatively constant for all subsample sizes and all streams at both family and species level. EPA's Biotic Condition Score (%similarity) indicated that at the 100-organism species level, all streams showed slight impairment and SFB1, SFB2 and SFB3 were also slightly impaired at the 300-organism level. In addition, SFB2 and SFB3 showed impairment at higher levels (SFB2 to 800- and SFB3 to 1000- organisms). Using the family BCS, California creek was not impaired at any level, SFB1 showed slight impairment at 100-organism level and SFB2 and SFB3 showed impairment at 100- and 300-organisms. This study indicates that family level metrics and indices give results similar to species level metrics and that subsampling at the 300-organism level could also be utilized. Using family level metrics and 300-organism subsamples would save considerable time, money and energy, which could be better utilized in more in-depth studies and better stream management"--Document.
Download or read book State of the rivers written by Rachel Eberhard and published by . This book was released on 2000 with total page 32 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Biological Indicators of Ecosystem Health in Wet Tropics Streams written by and published by . This book was released on 2007 with total page 247 pages. Available in PDF, EPUB and Kindle. Book excerpt: "This research was designed to explore the concept of river health and to represent it as an integrated suite of protocols and techniques for biological river health assessment in wet tropics streams. The ultimate goal was the adoption of the methodology by relevant agencies and persons responsible for or interested in ecosystem health monitoring."--Provided by publisher.
Download or read book Ecological Condition Assessment written by David Deane and published by . This book was released on 2005 with total page 107 pages. Available in PDF, EPUB and Kindle. Book excerpt: "This report provides a preliminary assessment of the condition of aquatic ecosystems associated with the small streams of the Mambray Coast, located in the Mid-North of South Australia. The study was undertaken by the Department of Water, Land and Biodiversity Conservation (DWLBC) for the Northern and Yorke Natural Resource Management Board (NYNRMB). The purposes of the study were to: map the location of permanent aquatic habitat in the catchment which represents a significant ecological asset within ephemeral stream ecosystems, describe the ecological character and condition of the streams, [and] determine any threats to the ecological integrity of these systems, particularly those due to extraction of water for human use." --p. 1 of aource document.
