Zobrazeno 1 - 8 of 8 pro vyhledávání: '"H. W. De Nie"'
1
Interactions between aquatic macrophytes and fish in Lake Veluwe, direct and indirect effects
Autor: J. J. G. M. Backx, H. W. De Nie
Publikováno v: Lake Veluwe, a Macrophyte-dominated System under Eutrophication Stress ISBN: 9789401048996
The fish fauna of Lake Veluwe is dominated by bream (on average 84% of total catch, maximally 690 kg fresh weight ha−1), followed by pikeperch (7.3%), roach (5.0%), perch (2.0%) and ruffe (1.8%). Four different interactions between fish and aquatic
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::2e10b0ce1e6ad9968e466c0021cf29bf
https://doi.org/10.1007/978-94-011-2032-6_15
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2
Relations between mycorrhizas and fruitbodies of mycorrhizal fungi in Douglas fir plantations in The Netherlands
Autor: H. W. De Nie, A. E. Jansen
Publikováno v: Acta botanica neerlandica, 37, 243-249
Acta botanica neerlandica 37 (1988)
SUMMARY Relations between above-ground fruitbodies of mycorrhizal fungi and mycorrhizas in the soil were studied in 23 Douglas fir stands of various ages in The Netherlands. In the autumn of 1986, fruitbody and mycorrhiza density and diversity were d
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::48a550a0251e0e1d58f9811eb9a9241e
https://doi.org/10.1111/j.1438-8677.1988.tb02133.x
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4
The accuracy of population density estimates of copepods and cladocerans, using data from Tjeukemeer (the Netherlands) as an example
Autor: H. W. de Nie, J. Vijverberg
Publikováno v: Hydrobiologia, 124(1), 3-11. Springer Netherlands
The effects of subsampling and of the variation within and among sampling stations on the accuracy of the estimates of mean population densities for copepods and cladocerans are examined. For the computation of the coefficient of variation in the mea
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::990a3225510ef3b7b1eae66f7880ea73
https://pure.knaw.nl/portal/en/publications/3aa56b1a-681d-4f46-89e6-a9fba7529a1c
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5
A note on the significance of larger bivalve molluscs (Anodonta spp. and Dreissena sp.) in the food of the eel (Anguilla anguilla) in Tjeukemeer
Autor: H. W. de Nie
Publikováno v: Studies on Lake Vechten and Tjeukemeer, The Netherlands ISBN: 9789400980174
The stomach contents of 517 eels were analysed during 1979. In that particular year the diet consisted predominantly of chironomids, but large bivalve molluscs were of secondary importance. The meaning of this observation is discussed in relation to
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::240cbc17493c61e907dca0f9dca66970
https://doi.org/10.1007/978-94-009-8015-0_20
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6
Effects of thermal effluents from the Bergum Power Station on the Zooplankton in the Bergumermeer
Autor: H. W. de Nie
Publikováno v: Studies on Lake Vechten and Tjeukemeer, The Netherlands ISBN: 9789400980174
The influence of thermal discharge from a 640 MW steam electric power station on the Bergumermeer (shallow, eutrophic lake) was investigated. The temperature of the thermal effluent did not exceed 30 °C. The lake was sampled extensively from 1975 to
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::6e909eb8c8e0af63ef402588e3789257
https://doi.org/10.1007/978-94-009-8015-0_23
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