Author: Publisher:
ISBN:
Category : Stream ecology
Languages : en
Pages :
Book Description
Habitat Comparisons of Macroinvertebrate Community Structures in Headwater Streams of the Northern Jarrah Forest
Author: Macroinvertebrate Community Structure and Feeding Dynamics in Three Forested Headwater Streams in Central Maine
Author: Emily R. ArsenaultPublisher:
ISBN:
Category : Aquaculture
Languages : en
Pages : 154
Book Description
Headwater streams have some of the best quality water in the country (Dissmeyer 2000). Because headwaters eventually flow into other downstream water bodies like rivers and lakes, they are important places to focus research and conservation efforts. All streams in this study had good water quality based on several assessments of macroinvertebrate communities. 1. Judging from metrics of abundance, richness, EPT, and HBI, all study streams had very good water quality. Thirty-nine total families were observed among the three streams. Whittier Stream was the least healthy of the three, most likely as a result of human disturbances such as a road crossing, fishpond, and mill remnants. It is probable these habitat alterations are having an effect on downstream benthic communities. 2. The riparian zone of each stream was forested and stable, but there were some eroding banks at some points along the study reaches. The abundance of sensitive macroinvertebrates (measured using representative Orders Ephemeroptera, Plecoptera, and Trichoptera) increased with increasing percent canopy cover and decreased with high percentages of sand characterizing the streambed. 3. Macroinvertebrates can be categorized into functional feeding groups based on feeding behavior. Shredders should hypothetically be in high abundance in headwater streams due to high riparian organic matter inputs. However, observed shredders were limited. This may be due to seasonal changes in functional feeding group ratios. In addition, all study streams had a predator/prey ratio that was higher than the ratio expected for a typical stream, which suggests that there might be an abundance of prey biomass in the study stream headwaters. 4. Based on results from stable isotope analysis of carbon and nitrogen, most macroinvertebrates within the study streams seem to be omnivorous. The most complex food web was observed at Stony Brook. Food webs of Beaver Brook and Stony Brook showed similar trophic clustering, a pattern that might be indicative of streams with excellent water quality.
Selected Water Resources Abstracts
Author: A Comparison of the Macroinvertebrate Communities in Two Headwater Streams in Advance of an Invasive Forest Pest
Author: James J. Willacker (Jr.)Publisher:
ISBN:
Category : Aquatic invertebrates
Languages : en
Pages : 50
Book Description
Habitat Structure and Fish Communities of Warmwater Streams
Author: James R. KarrPublisher:
ISBN:
Category : Fish communities
Languages : en
Pages : 6
Book Description
Tropical Stream Ecology
Author: David DudgeonPublisher: Elsevier
ISBN: 0080557171
Category : Science
Languages : en
Pages : 343
Book Description
Tropical Stream Ecology describes the main features of tropical streams and their ecology. It covers the major physico-chemical features, important processes such as primary production and organic-matter transformation, as well as the main groups of consumers: invertebrates, fishes and other vertebrates. Information on concepts and paradigms developed in north-temperate latitudes and how they do not match the reality of ecosystems further south is expertly addressed. The pressing matter of conservation of tropical streams and their biodiversity is included in almost every chapter, with a final chapter providing a synthesis on conservation issues. For the first time, Tropical Stream Ecology places an important emphasis on viewing research carried out in contributions from international literature. - First synthetic account of the ecology of all types of tropical streams - Covers all of the major tropical regions - Detailed consideration of possible fundamental differences between tropical and temperate stream ecosystems - Threats faced by tropical stream ecosystems and possible conservation actions - Descriptions and synstheses life-histories and breeding patterns of major aquatic consumers (fishes, invertebrates)
Macroinvertebrate Community Structure of Headwater Streams of the Buffalo National River, Arkansas, in Relation to Physicochemical Environmental Variables
Author: Carl Willard DickPublisher:
ISBN:
Category : Benthos
Languages : en
Pages : 144
Book Description
Assessing Organic Matter Breakdown and Associated Macroinvertebrate Community Structure in Headwater Streams
Author: Miller Scott JarrellPublisher:
ISBN:
Category : Ecology
Languages : en
Pages : 180
Book Description
Community Structure and Functional Organization of Streams of the Northern Jarrah Forest, Western Australia
Author: Stuart E. BunnPublisher:
ISBN:
Category : Detritus
Languages : en
Pages : 292
Book Description
Author: Julie Elizabeth Helson