نتایج جستجو برای: aquatic insect

تعداد نتایج: 70199  

Journal: :IOP Conference Series: Earth and Environmental Science 2020

Journal: :Journal of Plant Ecology 2023

Abstract Species coculture can increase agro-biodiversity and therefore constitutes an ecological intensification measure for agriculture. Rice-aquatic animal coculture, one type of species has been practiced researched widely. Here, we review recent studies present results a quantitative analysis literature on rice–aquatic systems. We address three questions: (i) rice yield soil fertility be m...

Journal: :Environmental science & technology 2005
David B Buchwalter Samuel N Luoma

This study examined the extent to which dissolved Cd and Zn uptake rates vary in several aquatic insect taxa commonly used as indicators of ecological health. We further attempted to explain the mechanisms underlying observed differences. By comparing dissolved Cd and Zn uptake rates in several aquatic insect species, we demonstrated that species vary widely in these processes. Dissolved uptake...

Journal: :The Journal of experimental biology 2004
Balázs Bernáth József Gál Gábor Horváth

Using 180 degrees field-of-view imaging polarimetry, we measured the reflection-polarization patterns of two artificial surfaces (water-dummies) in the red, green and blue spectral ranges under clear and partly cloudy skies at different solar elevations. The dummies consisted of a horizontal glass pane with a matt black or matt light grey cloth underneath, imitating a dark or bright water body,...

Journal: :Environmental science & technology 2013
Monica D Poteat Theodore Garland Nicholas S Fisher Wen-Xiong Wang David B Buchwalter

The ability to eliminate (efflux) metals is a physiological trait that acts as a major driver of bioaccumulation differences among species. This species-specific trait plays a large role in determining the metal loads that species will need to detoxify to persist in chronically contaminated environments and, therefore, contributes significantly to differences in environmental sensitivity among ...

Journal: :Applied and environmental microbiology 2008
Lydia Mosi Heather Williamson John R Wallace Richard W Merritt P L C Small

A number of studies have suggested that Mycobacterium ulcerans, the etiological agent of Buruli ulcer, may be transmitted to humans by insect bites. M. ulcerans has been isolated from a predaceous aquatic insect, and PCR detection of M. ulcerans DNA in aquatic environments suggests that the organism is widely distributed within many invertebrate taxa and functional feeding groups. Thus, M. ulce...

2014
William I. Atlas Wendy J. Palen

Resource subsidies increase the productivity of recipient food webs and can affect ecosystem dynamics. Subsidies of prey often support elevated predator biomass which may intensify top-down control and reduce the flow of reciprocal subsidies into adjacent ecosystems. However, top-down control in subsidized food webs may be limited if primary consumers posses morphological or behavioral traits t...

2011
LAURIE C. ALEXANDER MARGARET A. PALMER

1. Terrestrial dispersal by aquatic insects increases population connectivity in some stream species by allowing individuals to move outside the structure of the stream network. In addition, individual survival and reproductive success (as well as dispersal) are tightly linked to the quality of the terrestrial habitat. 2. In historically forested catchments, deforestation and altered land use h...

Journal: :Biology letters 2010
Shannon J McCauley Locke Rowe

Dispersal is a central process determining community structure in heterogeneous landscapes, and species interactions within habitats may be a major determinant of dispersal. Although the effects of species interactions on dispersal within habitats have been well studied, how species interactions affect the movement of individuals between habitats in a landscape has received less attention. We c...

Journal: :Emerging Infectious Diseases 2008
M. Eric Benbow Heather Williamson Ryan Kimbirauskas Mollie D. McIntosh Rebecca Kolar Charles Quaye Felix Akpabey D. Boakye Pam Small Richard W. Merritt

Buruli ulcer is a necrotizing skin disease caused by Mycobacterium ulcerans and associated with exposure to aquatic habitats. To assess possible transmission of M. ulcerans by aquatic biting insects, we conducted a field examination of biting water bugs (Hemiptera: Naucoridae, Belostomatidae, Nepidae) in 15 disease-endemic and 12 non-disease-endemic areas of Ghana, Africa. From collections of 2...

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