| 释义 |
saprobic, a. Ecol.|səˈprəʊbɪk|
[f. G. saprob-ie saprobe + -ic.]
a. Characterized by the prevalence of decaying organic material; spec. = polysaprobic adj. s.v. poly- 1; saprobic system, a system by which a body of polluted water is divided into zones characterized by the presence of certain organisms that are treated as indicators of the degree of pollution.
1913Bull. Illinois State Lab. Nat. Hist. IX. x. 498 We will distinguish..three stages of impurity, by use of the following terms applicable both to the waters themselves and to the characteristic organisms, given here in the order of a diminishing impurity, namely: (1) septic or saprobic [etc.]. 1925[see polysaprobic adj.]. 1967A. F. Bartsch in Olson & Burgess Pollution & Marine Ecol. vi. 294 Various North American biologists have expressed doubt as to the applicability of the saprobic system to coastal and estuarine environments. 1971R. J. Benoit in L. L. Ciaccio Water & Water Pollution Handbk. I. iv. 255 The general relationship between the saprobic zones and the zones shown by oxygen sag curves has been illustrated. 1975D. F. Westlake in B. A. Whitton River Ecol. iv. 126 In general macrophytes are not good indicators for use in the saprobic system of classifying rivers.
b. Pertaining to or characteristic of a saprobe; deriving nourishment from decaying organic matter.
1932Bot. Gaz. XCIII. 429 The nutrition of the Phycomycetes is saprobic or parasitic. 1960H. B. N. Hynes Biol. Polluted Waters xiii. 161 Complex organic..molecules encourage the growth of saprophytic plants and saprobic animals. 1976Nature 27 May 336/2 The free-living saprobic form found in soil is mycelial.
Hence saˈprobical a. = saprobial a.; saproˈbicity = saprobity.
1961Arch. Hydrobiol. LVII. 405 Tables of the saprobical valency of species studied by the authors as well as examples of the saprobiological evaluation are appended. 1971Ann. Rev. Microbiol. XXV. 565 The rate of multiplication of the test organism, i.e., optimum biomass produced, is considered to be an integrated biological measure of the content of biologically active organic nitrogen in the water and thus a measure of the saprobicity. 1975G. A. Cole Textbk. Limnol. iv. 61/2 Saprobicity, the total of all the processes that are antithetical to primary production, is another classification of heterotrophy. |