Global ETD Search

11	Effects of behavioural flexibility and habitat complexity on predator-prey interactions in fish communities Eklöv, Peter January 1995 (has links) <p>Diss. (sammanfattning) Umeå : Umeå universitet, 1995, härtill 6 uppsatser.</p> / digitalisering@umu predator-prey interactions behavioural flexibility habitat complexity foraging mode sit-and-wait group foraging Perea fluviatilis Esox lucius Rutilus rutilus size-structured interactions species-specific antipredator behaviour proximate cues habitat distribution temporal patterns
12	Zur Rekonstruktion historischer Biodiversität aus archivalischen Quellen: Das Beispiel des Oderbruchs (Brandenburg) im 18. Jahrhundert / The reconstruction of historical biodiversity by archival sources: the example of the Oderbruch floodplain (Brandenburg) in the 18th century Jakupi, Antje 05 July 2007 (has links) No description available. 570 Biowissenschaften, Biologie Mathematics and Computer Science historische Biodiversität Archiv archivalische Quellen Fluss Oder Oderbruch Überschwemmung 18. Jahrhundert Rekonstruktion Sammlungen Hecht Esox lucius Top-Predator Grünland Grünlandgesellschaften Wiese Hütung Weide Artenreichtum Artendiversität Diversität Artgemeinschaften Flussaue Eindeichung Melioration;Fischartengemeinschaft Indikatorart Charakterart Bewirtschaftung Heu Heuertrag Besatzdichte Weidevieh Ertrag Biomasse Süßwasser historical biodiversity archive archival sources river Odra Oderbruch inundation 18th century reconstruction collections pike Esox lucius top predator grassland grassland communities meadow pasture species richness species diversity community diversity floodplain embankment land improvement fish community indicator species character species farming style hay hay-yield stocking rate livestock yield biomass freshwater 42.90 Ökologie: Allgemeines
13	Citlivost adultních ryb různých druhů k anestetiku hřebíčkový olej / Sensitivity to anesthetic clove oil different species of adult fish ŠKEŘÍK, Jindřich January 2007 (has links) Nomenclature: Sensitivity to anesthetic clove oil different species of adult fish Sensitivity of breeding fishes of various species (Siberian sturgeon, Brook trout, Black carp- young breeding fishes) for anesthetic clove oil was probed by the tests performed at temperature in the period of stripping (apart from Brook trout and Black carp). The tests were carried out with 17 fish species- with cyprinids (Ide- golden form, Common dace, European Chub, Sneep, Barbel, Grass carp, Black carp, bighead carp), salmonids (Brown trout, Rainbow trout, Brook trout), thymallinae (Grayling), pikes (Northern pike), perches (Pike-perch), sturgeons (Siberian sturgeon, Beluga) and airbreathing catfishes (North African catfish). Using concentration of 0,03ml.l-1 (Brown trout, Rainbow trout, Brook trout, Grayling, Pike, Pike perch, Ide, Dace, Chub, Barbel and Sneep), 0,04ml.l-1 (Grass carp, Black carp, Bighead carp), 0,05ml.l-1 (North African catfish) and 0,07ml.l-1 (Siberian sturgeon, Beluga) the IIb. Phase has been achieved, which is sufficient for manipulation with fishes during stripping. The anesthesia subsided after time period of 10-17 minutes (12 species) at the majority of fishes and at others after interval of 20-26 minutes (5 species). The results confirmed concentrations recommended for salmodis and Grayling (0,025-0,03ml.l-1), sturgeons (0,07ml.l-1), and North African catfish (0,05ml.l-1). At the majority of cyprinids (apart from Grass carp, Black carp and Bighead carp), the concentration used was lower than recommended (0,04-0,05ml.l-1)

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