178 Articles found
Springer-Verlag GmbH Articles
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Relationship Between Dietary Cadmium Absorption by Grass Shrimp (Palaemonetes pugio) and Trophically Available Cadmium in Amphipod (Gammarus lawrencianus) Prey
Recent studies have shown that the transfer of metals along estuarine food chains may be directly related to the subcellular distribution of metal within prey, indicating that the qualification of whole tissue metal burdens may not serve as a ...
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Acute Toxicity of the Synthetic Pyrethroid Deltamethrin to Fingerling European Catfish, Silurus glanis L.
The wide use of synthetic pesticides is increasing worldwide pollution risk. The synthetic pyrethroids are among the most potent and effective insecticides available (moore and Waring 2001), accounting for more than 30% of the world market in ...
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Abamectin in Tea and Tea Liquor Under Northeastern Indian Climatic Conditions
Tea (Camellia sinensis) is the second most consumed beverage after water and about one and a half billion cups of tea is consumed daily all over the world. India is the highest producer of tea in the world. Tea is being cultivated mainly in noreast ...
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Is Shennongjia a Suitable Site for Reintroducing Giant Panda: An Appraisal on Food Supply
The giant panda was found on Mount Shennongjia in Central China for thousands of years but vanished in the late 19th century. The possibility for reintroducing the giant panda in Shennongjia is discussed in terms of food availability, carrying ...
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Suitability of Wastes from Olive-Oil Industry for Initial Reclamation of a Pb/Zn Mine Tailing
An incubation experiment was conducted to evaluate the ameliorating role of two organic amendments—olive-mill solid wastes and compost from olive-mill solid wastes- in the ecological reclamation of a lead/Zn-mine tailing collected in southern Spain. ...
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In Situ Avoidance Response Of Adult Atlantic Salmon To Waste From The Wood Pulp Industry
An accidental release of non-toxic waste from decommissioned wood pulp industry in the River Numedalslågen, Southern Norway, occurred in the upper part of the accessible stretches for anadromous fish during a study of migration behaviour of radio ...
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Minimal models and agroecological policy at the regional scale: An application to salinity problems in southeastern Australia
A minimal dynamical systems model that couples agricultural activity, native vegetation, and hydrological processes is developed to explore policy options regarding regional-scale soil and water salinization in southeastern Australia. The analysis ...
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Plant phenology in Germany over the 20th century
Analysis of observational phenological data has indicated that the length of the vegetation period (VP), here defined as the time between leaf onset and leaf colouring (LC), has increased in the last decades in the northern latitudes mainly due to ...
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Vegetation: A source of air fungal bio-contaminant
Airborne fungal counts and types were examined in three selected regions in Egypt. Two of the sampling sites are rural areas, one cultivated with chamomile and the second with vegetable. The third site is located in an urban area. A sedimentation ...
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Modeling composting kinetics: A review of approaches
Composting kinetics modeling is necessary to design and operate composting facilities that comply with strict market demands and tight environmental legislation. Current composting kinetics modeling can be characterized as inductive, i.e. the data ...
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The value of compost
Without Abstract
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Modeling flight activity and population dynamics of the pine engraver, Ips pini, in the Great Lakes region: effects of weather and predators over short time scales
Ascertaining the relative effects of factors such as weather and predation on population dynamics, and determining the time scales on which they operate, is important to our understanding of basic ecology and pest management. In this study, we ...
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Variation in the herd composition counts of sika deer
Herd composition counts (HCC) are commonly used to assess population status in deer. We evaluated the reliability of HCC of sika deer (Cervus nippon Temminck) using repeated counts and by comparing estimated sex ratios and calf-to-female ratios of ...
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Factors affecting seasonal mortality of rosy bitterling (Rhodeus ocellatus kurumeus) embryos on the gills of their host mussel
I investigated the seasonal change in factors affecting embryonic mortality in the rosy bitterling, Rhodeus ocellatus kurumeus, a freshwater fish that spawns on the gills of living unionid mussels. Research was conducted in a small pond during 1999 ...
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Neutral phenotypes as network keystone species
The concept of network keystone species is proposed. A set of phenotypes constitute a network that acts as a functional keystone. When an ecosystem forms a large, complex network that changes temporally, it is generally difficult to tell which will ...
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Response of coccinellids to their aphid prey at different spatial scales
Predators that have an increasing numerical response for aggregation, attack and oviposition to increasing prey density are thought to be ideal for biological control. However density-dependent processes are infrequently detected and explanations ...
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Pollinator community structure and sources of spatial variation in plant–pollinator interactions in Clarkia xantiana ssp. xantiana
The structure of diverse floral visitor assemblages and the nature of spatial variation in plant–pollinator interactions have important consequences for floral evolution and reproductive interactions among pollinator-sharing plant species. In this ...
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Are endophyte-mediated effects on herbivores conditional on soil nutrients?
Neotyphodium endophytes are assumed to have mutualistic relationship with their grass hosts, mainly resulting from mycotoxin production increasing plant resistance to herbivores by the fungus that subsists on the plant. To study importance of often ...
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Detection of biotic responses to urbanization using fish assemblages from small streams of western Georgia, USA
We examined relationships between stream fish assemblages and land use alteration associated with urbanization in 15 lower Piedmont watersheds along an urbanization gradient north of Columbus, western Georgia. Based on land cover data from 2002 ...
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Distribution of neotropical migratory bird species across an urbanizing landscape
Urbanization leads to long-term modification of landscapes by habitat loss, fragmentation, and the creation of new habitats. Species’ distributions respond to these modifications of habitat availability, but the combination of parameters and scale ...