The Effects of Natural Variability on the Use of Macroinvertebrates as Bioindicators of Disturbance in Intermontane Depressional Wetlands in Northwestern Montana, USA PDF Download

Author: Vicki E. Ludden
Publisher:
ISBN:
Category : Indicators (Biology)
Languages : en
Pages : 324

View

Book Description

Author: Russell B. Rader
Publisher: John Wiley & Sons
ISBN: 9780471352341
Category : Nature
Languages : en
Pages : 484

View

Book Description
The first resource of its kind-essential practical guidance on wetlands bioassessment and management Although bioassessment has become a vital tool in the successful management of many aquatic ecosystems, to date there has been no single book that covers the application of bioassessment principles to wetland ecosystems. This contributed volume fills this important gap in the literature, with a multifaceted look at the issues and techniques involved in the successful bioassessment and management of freshwater wetlands. The book is divided into two parts-bioassessment and wildlife management. After a review of general bioassessment principles, Part I discusses the statistical issues related to sampling numerous sites, as well as the application of multivariate procedures and invertebrate functional groups to wetland bioassessment. A series of case studies examines bioassessment results using various organismal groups, followed by several chapters that trace the relationship between bioassessment and wetland restoration. Coverage also explores how to use and sample bacteria, algae, macrophytes, and invertebrates. Part II covers key management topics, including many that are frequently overlooked in other treatments of the subject. Separate chapters discuss how to manage fish, waterbirds, and mosquitoes in wetlands. Other chapters address timber harvest strategies and impact assessment, as well as the biological control of an invasive wetland plant. As wetland managers work to strike a vital balance between resource exploitation and resource protection, this book offers an important repository of practical information to use in meeting this formidable challenge. It will be welcomed by wetland managers and scientists, environmental engineers, ecologists, civil engineers, and others whose work involves wetlands study and management.

Author:
Publisher: DIANE Publishing
ISBN: 1428905022
Category :
Languages : en
Pages : 104

View

Book Description

Author: Sergio A. Sabat-Bonilla
Publisher:
ISBN:
Category :
Languages : en
Pages : 69

View

Book Description
Predicted increases in the frequency of intense storms and periods of severe drought due to climate change represent a threat to wetland macroinvertebrate communities through alterations to the hydrological regime. I used experimental ponds to assess the effects of water permanence (i.e., duration of flooding) on the communities of aquatic macroinvertebrates. I predicted that permanent ponds would harbor higher diversity of longer-lived taxa whereas temporary ones will favor colonization by quick turnover, short-lived taxa and support lower consumer diversity. Results show differences in macroinvertebrate communities between permanent and temporary ponds can be mostly explained by hydrology and the amount of time these were covered by water. While biomass (B) and richness (S) of macroinvertebrates were related to treatment type, their abundance (N) was not. I also found that across both treatments many individuals were generalist collector-gatherers of small body size inhabiting fine-sediments, the open limnetic zone or vascular plants having multiple generations per year (multivoltine) and emerging in a highly synchronous manner at all times of the season. The results from this study show that the length of time these ponds retain water and the time of year in which these flooding events occur have major impacts on the natural succession of resettlement within temporary wetlands. The data obtained in this study aids in further understanding what communities of aquatic macroinvertebrates are supported by different conditions (i.e., potential disturbances), as well as what ecosystem functions will be the most impacted by these changes along the wetlands of the southeastern Coastal Plain.

Author: David C. Richards
Publisher:
ISBN:
Category : Aquatic invertebrates
Languages : en
Pages : 384

View

Book Description

Author: Deborah C. Gregg
Publisher:
ISBN:
Category : Freshwater invertebrates
Languages : en
Pages : 162

View

Book Description

Author: Gabrielle Trottier
Publisher:
ISBN:
Category :
Languages : en
Pages :

View

Book Description
"The regulation and management of lake water levels have become a major form of anthropogenic disturbance in temperate and boreal aquatic ecosystems. Drawing the water level down as the winter season progresses can lead to substantial exposure of the littoral zone, rendering it susceptible to desiccation and freezing. Such changes in the hydrological regime of littoral zones can have significant effects on aquatic biota, including macroinvertebrates. These organisms are widely considered as robust bioindicators, but it is also well known that their abundance and distribution is characterized by substantial patchiness. Often, scientists who use macroinvertebrates as bioindicators, focus their sampling on a single habitat type (e.g., stony littoral) to reduce the heterogeneity in macroinvertebrate distributions. However, applying such an approach in the context of an environmental stressor makes it difficult to draw general conclusions about the impact of a potential stressor on the entire littoral zone. Recently, a debate has emerged in the literature over the effects of water level drawdown on macroinvertebrate communities and we think that at least part of this debate may be due to different sampling strategies employed across studies to examine the effects of drawdown on macroinvertebrate communities. In order to evaluate how nearshore macroinvertebrate communities, from a variety of habitats, are affected by drawdown, we sampled 15 reservoirs and quantified macroinvertebrate abundance and composition. To these data, we applied a combination of (generalized) linear mixed effects models and multivariate analyses to answer the following question; what are the effects of drawdown on macroinvertebrate abundance and community composition? To address this question and incorporate the possible effects of heterogeneity in abundance and distribution of macroinvertebrates, we explicitly considered multiple physical environmental variables as additional predictors of macroinvertebrate abundance and community composition. We found that drawdown and thermal regime were significant predictors of macroinvertebrate abundance, but explained negligible amounts of variation in the community composition. Overall, these findings help elucidate how macroinvertebrate communities respond to winter drawdown and strengthen the knowledge on how localized environmental conditions influence macroinvertebrates. Furthermore we think that our sampling and analytical approach provides a useful template for other scientists to adopt when quantifying the effect of a potential stressor on nearshore macroinvertebrate communities." --

Author: Wease Bollman
Publisher: Legare Street Press
ISBN: 9781020792090
Category :
Languages : en
Pages : 0

View

Book Description
This book presents the results of macroinvertebrate bioassessment of the Boulder River in Sweetgrass and Park Counties, Montana, in 2000. The book is a valuable resource for those studying the ecology and biodiversity of the Boulder River. This work has been selected by scholars as being culturally important, and is part of the knowledge base of civilization as we know it. This work is in the "public domain in the United States of America, and possibly other nations. Within the United States, you may freely copy and distribute this work, as no entity (individual or corporate) has a copyright on the body of the work. Scholars believe, and we concur, that this work is important enough to be preserved, reproduced, and made generally available to the public. We appreciate your support of the preservation process, and thank you for being an important part of keeping this knowledge alive and relevant.

Author: Reinhard Pienitz
Publisher: Springer Science & Business Media
ISBN: 1402021267
Category : Science
Languages : en
Pages : 579

View

Book Description
Concerns about the effects of global climate change have focused attention on the vulnerability of circumpolar regions. This book offers a synthesis of the spectrum of techniques available for generating long-term environmental records from circumpolar lakes.

Author: Peter Stiling, Dr. Ph.D.
Publisher: McGraw-Hill Education
ISBN: 9780073532509
Category : Science
Languages : en
Pages : 0

View

Book Description
Peter Stiling, co-author of Biology by Brooker et al., has introduced a new ecology text to the market. The main goal of this latest ecology text is to show how ecology is important in understanding global change. The book's main objective is to teach the basic principles of ecology and to relate these principles to many of the Earth's ecological problems. Users who purchase Connect Plus receive access to the full online ebook version of the textbook.