Quantifying invertebrate resistance to floods: a global-scale meta-analysis.
نویسندگان
چکیده
Floods are a key component of the ecology and management of riverine ecosystems around the globe, but it is not clear whether floods have predictable effects on organisms that can allow us to generalize across regions and continents. To address this, we conducted a global-scale meta-analysis to investigate effects of natural and managed floods on invertebrate resistance, the ability of invertebrates to survive flood events. We considered 994 studies for inclusion in the analysis, and after evaluation based on a priori criteria, narrowed our analysis to 41 studies spanning six of the seven continents. We used the natural-log-ratio of invertebrate abundance before and within 10 days after flood events because this measure of effect size can be directly converted to estimates of percent survival. We conducted categorical and continuous analyses that examined the contribution of environmental and study design variables to effect size heterogeneity, and examined differences in effect size among taxonomic groups. We found that invertebrate abundance was lowered by at least one-half after flood events. While natural vs. managed floods were similar in their effect, effect size differed among habitat and substrate types, with pools, sand, and boulders experiencing the strongest effect. Although sample sizes were not sufficient to examine all taxonomic groups, floods had a significant, negative effect on densities of Coleoptera, Eumalacostraca, Annelida, Ephemeroptera, Diptera, Plecoptera, and Trichoptera. Results from this study provide guidance for river flow regime prescriptions that will be applicable across continents and climate types, as well as baseline expectations for future empirical studies of freshwater disturbance.
منابع مشابه
A digitized global flood inventory (1998–2008): compilation and preliminary results
Floods have profound impacts on populations worldwide in terms of both loss of life and property. A global inventory of floods is an important tool for quantifying the spatial and temporal distribution of floods and for evaluating global flood prediction models. Several global hazard inventories currently exist; however, their utility for spatiotemporal analysis of global floods is limited. The...
متن کاملEffects of Resistance Training on Performance and Physiological Indices in Patients with Ischemic Stroke: A Systematic Review and Meta-Analysis
Background and purpose: This meta-analysis review aimed to investigate the effect of resistance training on functional performance and physiological factors in patients with ischemic stroke. Materials and methods: The search was conducted in PubMed, Web of Science, and Scopus using related keywords. All articles were reviewed, but 22 studies that met the inclusion criteria were included after ...
متن کاملPrevalence of integron classes in Gram-negative clinical isolated bacteria in Iran: a systematic review and meta-analysis
Objective(s): Integrons, as a potential element in the distribution and maintenance of drug resistance, have thoroughly been established. It is known that the high prevalence of integrons in multidrug-resistant (MDR) clinical isolates has become a serious public health concern. The objective of the present study was to determine the frequency of different classes of integrons in clinical isolat...
متن کاملThe Effect of Resistance Exercise on Blood Glucose, Insulin and Insulin resistance in Iranian Patients with Type II Diabetes: A Systematic Review and Meta-Analysis
Objective: Resistance exercise is recommended as effective treatments for people with type 2 diabetes. However, the impact of this mode of exercise on blood glucose, insulin and insulin resistance in Iranian's type 2 diabetic patients is unclear. We conducted a systematic review of the literature for the effect of resistance exercise training on these clinical markers in Iranian's type 2 diabet...
متن کاملPrevalence of Antibiotic Resistance of Haemophilus Influenzae in Iran- A Meta-Analysis
Introduction: Based on the World Health Organization reports, infections caused by ampicillin-resistant Haemophilus influenzae strains are a major threat to public health and need urgent therapy with new antibiotics. Given the lack of a previous comprehensive study on the prevalence of the antibiotic resistance of H. influenzae in Iran, this systematic review and meta-analysis was perform...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید
ثبت ناماگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید
ورودعنوان ژورنال:
- Ecological applications : a publication of the Ecological Society of America
دوره 22 8 شماره
صفحات -
تاریخ انتشار 2012