Ecological consequences

Although the ecological consequences of enhanced UVB exposure to algal species are still largely unexplored, some data exist and some assumptions can be made. Based on the differential adaptation and acclimation capabilities in different algal species, UVB may, even under non-depleted ozone conditions, substantially affect the structure of communities, as well as modulate productivity, reproduction, vertical distribution, biodiversity and succession, competition, and alga-herbivore interactions (Bischof et al. 2006a). 

The information available on UV-susceptibility of different developmental stages in kelps indicate the unicellular zoospores as being most sensitive (Wiencke et al. 2000, 2004). However, zoospore UV-sensitivity varies species-specifically as a function of depth distribution of the sporophyte, i.e. kelps from shallow water are more tolerant than plants from deeper vertical positions. Consequently, any increase in UVB-induced spore mortality will result in impaired reproductive success and finally reduce fitness of the population. In addition, elevated UVB will penetrate deeper into the water column, which may result in a shift of the upper distribution limit of seaweed communities to deeper waters (Wiencke et al. 2006). 

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The concern over ecological consequences of the atmospheric input of oxidized and reduced nitrogen centres on soil acidification by the oxidized nitrogen directly, and by the reduced nitrogen following its transformation in the soil into NO/ or due to its uptake by vegetation (Figure 5). ... 

Pinay G, Clement JC, Naiman RJ (2002) Basic principles and ecological consequences of changing water regimes on nitrogen cycling in fluvial systems. Environ Manage 30 481 91... 

Verburg P, Hecky RE, King H (2003) Ecological consequences of a century of warming in Lake Tanganyika. Science 301 505-507... 

P. R. Darrah. Interactions between root exudates, mineral nutrition and plant growth. Inherent Variation in Plant Growth Physiological Mechanisms and Ecological Consequences (H. Lambers, H. Poorter and M. M. I. van Vuuren, eds.), Backhuys Publishers, Leiden, 1998, p. 159. 

The research strategies recommended by the USDA Research Planning Conference for EPA-related activities include studies ons (1) allelopathic effects on environment in terms of allelochemical persistence, activity and effectiveness, (2) ecological consequences due to alle-lochemicals, and (3) potential risks to human and animal health (37). In addition to these approaches, we should also pursue studies toward understanding the effect of ccrmercial allelochemicals, alone or in combination with other chemicals such as pesticides, on human health, safety and environment. 

Herman, D., N.K. Kaushik, and K.R. Solomon. 1986. Impact of atrazine on periphyton in freshwater enclosures and some ecological consequences. Canad. Jour. Fish. Aquat. Sci. 43 1917-1925. 

A. F. Troyanskaya, D.P.Moseeva, N.A.Rubtsova. Ecological Consequences of Using Sodium Pentachlorphenolate at Woodworking Enterprises in Arkhangelsk Region. - In the book ... 

Lepista, Mycena species) and symbionts (particularly the edible species X. badius, X. chrysenteron and Lactarius spp.)- The decrease in Cs specific activity with increasing depth of the mineral soil has one particularly important ecological consequence the coincidence of species-specific rhizospere with a variable load of radioactivity generates inter-specific differences in I37(3g accumulation. For authomorphous soil types, a decrease in radionuclide content with depth is common, but the gradient of this decrease is quite variable (Fig. 4). In some soddy-weakly-podzolic soils, the vertical distribution of specific activity is quite uniform, but in others, secondary peaks of activity were associated with the presence of heavier soil at various depths (6-12cm 16-20cm). However, overall, the vertical distribution of Cs activity was comparable in all the soils analysed. 

Instead I suggest, also following Mitchell, that nature speaks. It does so by hailing into existence specific kinds of human subjects, whose system of material ideological practices have ecological consequences as well as causes. 

Drake HL, Kiisel K, Matthies C. 2002. Ecological consequences of the phylogenetic and physiological diversities of acetogens. Ant V Leeuwenhoek 81 203-13. 

Markham KR, Bloor S J, Nicholson R et al (2004) Black flower coloration in wUd Lisianthius nigrescens its chemistry and ecological consequences. Z Namrforsch C 59 625-630... 

Cramer VA, Hobbs RJ (2002) Ecological consequences of altered hydrological regimes in fragmented ecosystems in southern Australia Impacts and possible management responses. Austral Ecology 27 546-564... 

With regard to hazardous substance substitution, the guiding principle of the intrinsic safety of chemical substances, products or application systems was examined within the scope of the SubChem project. An essential approach for implementation of the guiding principle of the intrinsically safe substance or the intrinsically safe application system, especially with regard to the health and ecological consequences, would be the use of chemicals of short ranges (chemicals with low environmental persistence and transport distance) e.g. by ... 

Bolam, S.G., Rees, H.L., Somerfield, R, Smith, R., Clarke, K.R., Warwick, R.M., Atkins, M., Gamacho, E. (2006). Ecological consequences of dredged material disposal in the marine environment a holistic assessment of activities around the England and Wales coastline. Marine Pollution Bulletin, 52(4) 415-26. 

Other ecological consequences of induced odor emissions... 

Besides the critical measures mentioned above, it has to be kept in mind that other community activities have counterproductive effects on air quality. The European Single Market has fostered growth of mobility, with side effects. The objective of the Trans-European Transport Networks (TEN-T22) is to make traffic efficient and safe, but it has been shown that they bring about additional traffic with negative ecological consequences. 

Woodward FI, Lake JA, Quick WP (2002) Stomatal development and C02 ecological consequences. New Phytol 153 477-484... 

Olsen, S., Pilson, M.E.Q., Oviatt, C.A. and Gearing, 3.N., 1982. Ecological consequences of low, sustained concentrations of petroleum hydrocarbons in temperate estuaries. MERL, Graduate School of Oceanography, University of Rhode Island, Narragansett, RI, 30 pp. 

It is interesting to note that the highest lability was observed at both ends of the concentration spectrum (i.e., low-DOM marine and high-DOM lake samples), and there are important ecological consequences to this... 

Canadian Arctic Shelf Ecosystem Study (CASES), which is an international effort under Canadian leadership to understand the biogeochemical and ecological consequences of sea ice variability and change on the Mackenzie Shelf in the Beaufort Sea (Arctic Ocean). 

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