Ichthyoplankton density and zooplankton biomass in the Benguela upwelling system during MSM18/4 in July and August 2011

Ichthyoplankton density (fish eggs and larvae) and bulk zooplankton biomass in September 2010 were determined for 10 stations in the northern Benguela upwelling system, based on oblique Multinet hauls during the RRS Discovery D356 cruise. A HYDROBIOS Multinet, type Midi (0.25 m**2 mouth area) was equipped with five nets of 500 µm-mesh size, temperature and oxygen probes, and an inner and outer flow meter to monitor the net's trajectory (for volume filtered calculations) as well as net clogging. The Multinet was handled over the side, towed horizontally at 2 knots. Winch speed when fearing was 0.5 or 0.3 m/s, heaving velocity 0.2 - 0.3 m/s. The Multinet was towed obliquely at 10 stations sampling the upper 200 m of the water column, which were divided into five different depth strata after inspection of temperature and oxygen concentration depth profiles. Ichthyoplankton densities and zooplankton biomass were calculated for each depth stratum (=single net) from total abundance and the volume of water filtered [individuals per m**3 and g wet weight per m**3, respectively]. In addition, densities and biomass were integrated over the area for each station [individuals per m**2], as sum of calculations for each net: Sum ([individuals per m**3]*Delta(depth bot[m]-depth top [m]).

DAS GESPRÄCH ZWISCHEN HÖLDERLIN, HEGEL UND SCHELLING ÜBER KANTS ANTINOMIEN

«Die Art, wie er den Mechanismus der Natur mit ihrer Zweckmäßigkeit vereiniget, scheint mir eigentlich den ganzen Geist seines Systems zu enthalten»: This quotation, which originated the present essay, is solely extracted from a letter sent by Hölderlin to Hegel, and yet, it condensates three different approaches from the three Tübingen friends to the problem of Kant’s philosophy of religion and to its possible resolution between 1795 and 1796. From this epistolary dialogue emerges a simultaneous study of Kant, originated by the growing dissension towards the orthodox thought of the Stift. The turning point – or the maximum cumulative point – of this discordance happens precisely with the discovery of the «spirit of Kant’s system», as a combined explanation of the religious and philosophical phenomena [«Die Art, wie er den Mechanismus der Natur mit ihrer Zweckmässigkeit vereiniget»]. This, I think, is something which the three friends discover gradually and not independently from the concept of «providence», which Kant himself, according to Hölderlin, had used to «attenuate his antinomies», which Hegel uses in his first religious writings and the initial formation of his own philosophy and which Schelling will later explore in his System of Transcendental Idealism. In a word, providence is consensually the comprehension axis between man, God and nature and, thus, the explanatory link between the antinomical poles which regulate human existence. On the other hand, however – this being the aspect I would like to stress –, this decisive moment for a whole generation, for the history of philosophy itself, means the consummation of a new revolutionary perspective born in Kant, a new vision of the absolute and the divine and, therefore, a new way to write philosophy about philosophy, less philosophical than before, to the extent that the new situation of man and his reflection within the problem ultimately destined them – as is the case in the three young philosophers – to silence and death. The final aim of this essay is, therefore, to know what this «last step of philosophy» is and what dies along with it, what such a step may have meant and what it already foretold in terms of the development of philosophy.

Zeitschrift für katholische Theologie.

New Testament abstracts

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Die ursachen des Deutschenhasses; eine nationalpädagogische erörterung,

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Schriften gegen die Pelagianer. Latein.-dt. Gesamtausg. seiner antipelagian. Schriften.

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Untersuchung des Nasenausflusses des Pferdes bei den verschiedenen Erkrankungen des Respirationsapparates.

Inaug.-diss.--Hannover, 1913.

Das Leben der Seele in Monographieen über seine Erscheinungen und Gesetze,

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